UNITED STATES

SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549

FORM 10-K

x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2007

or

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

Commission file number 1-15319

SENIOR HOUSING PROPERTIES TRUST

(Exact Name of Registrant as Specified in its Charter)

Maryland		04-3445278
(State of Organization)		(IRS Employer Identification No.)

400 Centre Street, Newton, Massachusetts 02458
(Address of Principal Executive Offices) (Zip Code)

Registrant’s Telephone Number, Including Area Code 617-796-8350

Securities registered pursuant to Section 12(b) of the Act:

Title Of Each Class		Name Of Each Exchange On Which Registered
Common Shares of Beneficial Interest		New York Stock Exchange

Securities to be registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes x No o

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o No x

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to such filing requirements for the past 90 days.
Yes x No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check One):

Large Accelerated Filer x		Accelerated Filer o

Non —Accelerated Filer o		Smaller reporting company o

(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x

The aggregate market value of the voting shares of the registrant held by non-affiliates was $1.7 billion based on the $20.35 closing price per common share on the New York Stock Exchange on June 29, 2007. For purposes of this calculation, an aggregate of 250,168 common shares held directly or by affiliates of the trustees and officers of the registrant have been included in the number of shares held by affiliates.

Number of the registrant’s common shares outstanding as of February 28, 2008: 94,901,249.

In this Annual Report on Form 10-K, the terms “SNH”, “Senior Housing”, the “Company”, “we”, “us” and “our” include Senior Housing Properties Trust, and its consolidated subsidiaries, unless the context indicates otherwise.

DOCUMENTS INCORPORATED BY REFERENCE

Certain information required in Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K is incorporated by reference from our definitive Proxy Statement for the Annual Meeting of Shareholders scheduled to be held on May 15, 2008, or our definitive Proxy Statement.

WARNING CONCERNING FORWARD LOOKING STATEMENTS

THIS ANNUAL REPORT ON FORM 10-K CONTAINS STATEMENTS AND IMPLICATIONS WHICH CONSTITUTE FORWARD LOOKING STATEMENTS WITHIN THE MEANING OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995 AND OTHER FEDERAL SECURITIES LAWS. THESE FORWARD LOOKING STATEMENTS ARE BASED ON OUR PRESENT INTENT, BELIEFS OR EXPECTATIONS, BUT THEY ARE NOT GUARANTEED TO OCCUR AND THEY MAY NOT OCCUR. FOR EXAMPLE:

· WE BELIEVE THAT FIVE STAR QUALITY CARE, INC., OR FIVE STAR, OUR FORMER SUBSIDIARY, WHICH IS RESPONSIBLE FOR 68% OF OUR RENTS, HAS ADEQUATE FINANCIAL RESOURCES AND LIQUIDITY TO MEET ITS OBLIGATIONS TO US. HOWEVER, FIVE STAR MAY EXPERIENCE FINANCIAL DIFFICULTIES AS A RESULT OF A NUMBER OF FACTORS, INCLUDING, BUT NOT LIMITED TO:

· INCREASES IN INSURANCE AND TORT LIABILITY COSTS;

· INEFFECTIVE INTEGRATION OF NEW ACQUISITIONS;

· CHANGES IN THE ECONOMY GENERALLY OR GOVERNMENTAL POLICIES WHICH REDUCE THE DEMAND FOR THE SERVICES FIVE STAR OFFERS;

· CHANGES IN REGULATIONS EFFECTING ITS OPERATIONS; AND

· CHANGES IN MEDICARE AND MEDICAID PAYMENTS WHICH COULD RESULT IN A REDUCTION OF RATES OR A FAILURE OF THESE RATES TO MATCH FIVE STAR’S COST INCREASES.

IF FIVE STAR’S OPERATIONS BECOME UNPROFITABLE, FIVE STAR MAY BECOME UNABLE TO PAY OUR RENTS;

· WE HAVE AGREEMENTS TO PURCHASE 16 SENIOR LIVING FACILITIES FOR $197.6 MILLION AND TO LEASE THEM TO FIVE STAR. HOWEVER, OUR DILIGENCE REGARDING THESE TRANSACTIONS HAS NOT YET BEEN COMPLETED AND WE MAY DECIDE NOT TO PROCEED WITH THESE PURCHASES. CERTAIN OF THESE PURCHASES ARE CONTINGENT UPON APPROVALS FROM THIRD PARTY MORTGAGE LENDERS, WHICH APPROVALS MAY NOT BE OBTAINED. AS A RESULT, ONE OR MORE OF THESE PROPOSED PURCHASES AND LEASES MAY NOT OCCUR.

ACTUAL RESULTS MAY DIFFER MATERIALLY FROM THOSE CONTAINED IN OR IMPLIED BY OUR FORWARD LOOKING STATEMENTS AS A RESULT OF VARIOUS FACTORS. FOR EXAMPLE:

· IF THE CURRENT TURMOIL IN THE CAPITAL MARKET MAKES THE AVAILABILITY OF CAPITAL LESS AVAILABLE TO US THAN IT HAS BEEN IN THE PAST, WE MAY BE UNABLE TO REFINANCE OR REPAY OUR DEBT OBLIGATIONS WHEN THEY BECOME DUE OR ON TERMS WHICH ARE AS FAVORABLE AS WE NOW HAVE.

· OUR ABILITY TO MAKE FUTURE DISTRIBUTIONS DEPENDS UPON OUR FUTURE EARNINGS. WE MAY BE UNABLE TO MAINTAIN OUR CURRENT RATE OF DISTRIBUTIONS AND FUTURE DISTRIBUTIONS MAY BE SUSPENDED OR PAID AT A LESSER RATE THAN THE DISTRIBUTIONS WE NOW PAY.

· OUR ABILITY TO GROW OUR BUSINESS AND INCREASE OUR DISTRIBUTIONS DEPENDS IN LARGE PART UPON OUR ABILITY TO BUY PROPERTIES AND LEASE THEM FOR RENTS WHICH EXCEED OUR CAPITAL COSTS. WE MAY BE UNABLE TO IDENTIFY PROPERTIES THAT WE WANT TO ACQUIRE OR TO NEGOTIATE ACCEPTABLE PURCHASE PRICES, ACQUISITION FINANCING OR LEASE TERMS FOR NEW PROPERTIES.

THESE RESULTS COULD OCCUR DUE TO MANY DIFFERENT REASONS, SOME OF WHICH, SUCH AS NATURAL DISASTERS OR CHANGES IN OUR MANAGERS’ OR TENANTS’ REVENUES OR COSTS, OR CHANGES IN CAPITAL MARKETS OR THE ECONOMY GENERALLY, ARE BEYOND OUR CONTROL.

OTHER RISKS MAY ADVERSELY IMPACT US, AS DESCRIBED MORE FULLY UNDER “ITEM 1A. RISK FACTORS.”

YOU SHOULD NOT PLACE UNDUE RELIANCE UPON FORWARD LOOKING STATEMENTS.

EXCEPT AS REQUIRED BY LAW, WE UNDERTAKE NO OBLIGATION TO UPDATE OR RELEASE ANY FORWARD LOOKING STATEMENTS AS A RESULT OF NEW INFORMATION, FUTURE EVENTS OR OTHERWISE.

STATEMENT CONCERNING LIMITED LIABILITY

THE ARTICLES OF AMENDMENT AND RESTATEMENT OF THE DECLARATION OF TRUST ESTABLISHING SENIOR HOUSING PROPERTIES TRUST, DATED SEPTEMBER 20, 1999, A COPY OF WHICH, TOGETHER WITH ALL AMENDMENTS AND SUPPLEMENTS THERETO, IS DULY FILED IN THE OFFICE OF THE STATE DEPARTMENT OF ASSESSMENTS AND TAXATION OF MARYLAND, PROVIDES THAT THE NAME “SENIOR HOUSING PROPERTIES TRUST” REFERS TO THE TRUSTEES UNDER THE DECLARATION OF TRUST, AS AMENDED AND SUPPLEMENTED, AS TRUSTEES, BUT NOT INDIVIDUALLY OR PERSONALLY, AND THAT NO TRUSTEE, OFFICER, SHAREHOLDER, EMPLOYEE OR AGENT OF SENIOR HOUSING PROPERTIES TRUST SHALL BE HELD TO ANY PERSONAL LIABILITY, JOINTLY OR SEVERALLY, FOR ANY OBLIGATION OF, OR CLAIM AGAINST, SENIOR HOUSING PROPERTIES TRUST. ALL PERSONS DEALING WITH SENIOR HOUSING PROPERTIES TRUST, IN ANY WAY, SHALL LOOK ONLY TO THE ASSETS OF SENIOR HOUSING PROPERTIES TRUST FOR THE PAYMENT OF ANY SUM OR THE PERFORMANCE OF ANY OBLIGATION.

SENIOR HOUSING PROPERTIES TRUST
2007 FORM 10-K ANNUAL REPORT

Table of Contents

Part I
		Page
Item 1.	Business	1
Item 1A.	Risk Factors	30
Item 1B.	Unresolved Staff Comments	36
Item 2.	Properties	36
Item 3.	Legal Proceedings	37
Item 4.	Submission of Matters to a Vote of Security Holders	37

Part II

Item 5.	Market for Registrant’s Common Shares, Related Stockholder Matters and Issuer Purchases of Equity Securities	38
Item 6.	Selected Financial Data	39
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	40
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	48
Item 8.	Financial Statements and Supplementary Data	49
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	49
Item 9A.	Controls and Procedures	49
Item 9B.	Other Information	49

Part III

Item 10.	Directors, Executive Officers and Corporate Governance	50
Item 11.	Executive Compensation	50*
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	50
Item 13.	Certain Relationships and Related Transactions, and Director Independence	51*
Item 14.	Principal Accountant Fees and Services	51*

Part IV

Item 15.	Exhibits and Financial Statement Schedules	51

	Signatures

	* Incorporated by reference from our Proxy Statement to be filed pursuant to Regulation 14A for the Annual Meeting of Shareholders scheduled to be held on May 15, 2008.

PART I

Item 1. Business

The Company.

We are a real estate investment trust, or REIT, that was organized under the laws of the state of Maryland in 1998. As of December 31, 2007, we owned 202 properties located in 32 states. On that date, the undepreciated carrying value of our properties, net of impairment losses, was $1.9 billion. Our principal executive offices are located at 400 Centre Street, Newton, Massachusetts 02458, and our telephone number is (617) 796-8350.

We believe that the aging of the United States population will increase demand for existing senior apartments, independent living properties, assisted living properties and nursing homes and encourage development of new properties. We plan to profit from this demand by purchasing additional properties and leasing them at initial rents that are greater than our costs of capital and by structuring leases that provide for periodic rental increases.

Our present business plan contemplates investments in age restricted apartment buildings, independent living properties, assisted living properties, nursing homes, rehabilitation hospitals and wellness centers. Some properties combine more than one type of service in a single building or campus. Our board of trustees establishes our investment, financing and disposition policies and may change them at any time without shareholder approval.

Senior Apartments. Senior apartments are marketed to residents who are generally capable of caring for themselves. Residence is usually restricted on the basis of age. Purpose built properties may have special function rooms, concierge services, high levels of security and assistance call systems for emergency use. Residents at these properties who need healthcare or assistance with the activities of daily living are expected to contract independently for these services with homemakers or home healthcare companies.

Independent Living Properties. Independent living properties, or congregate care communities, also provide high levels of privacy to residents and require residents to be capable of relatively high degrees of independence. Unlike a senior apartment property, an independent living property usually bundles several services as part of a regular monthly charge. For example, an independent living property may include one or two meals per day in a central dining room, daily or weekly maid service or a social director in the base charge. Additional services are generally available from staff employees on a fee for service basis. In some independent living properties, separate parts of the property are dedicated to assisted living or nursing services.

Assisted Living Properties. Assisted living properties typically have one bedroom units which include private bathrooms and efficiency kitchens. Services bundled within one charge usually include three meals per day in a central dining room, daily housekeeping, laundry, medical reminders and 24 hour availability of assistance with the activities of daily living, such as dressing and bathing. Professional nursing and healthcare services are usually available at the property on call or at regularly scheduled times.

Nursing Homes. Nursing homes generally provide extensive nursing and healthcare services similar to those available in hospitals, without the high costs associated with operating theaters, emergency rooms or intensive care units. A typical purpose built nursing home includes mostly rooms with one or two beds, a separate bathroom and shared dining facilities. Licensed nursing professionals staff nursing homes 24 hours per day.

Rehabilitation Hospitals. Rehabilitation hospitals, also known as inpatient rehabilitation facilities, or IRFs, provide intensive physical therapy, occupational therapy and speech language pathology services beyond the capabilities customarily available in nursing homes. Patients in IRFs generally receive a minimum of three hours of rehabilitation services daily. IRFs often have outpatient satellite clinics as part of the IRF continuum of care. Our two rehabilitation hospitals have beds available for inpatient services and provide extensive outpatient services from the hospitals’ premises. In addition, these two hospitals operate outpatient clinics where patients discharged from the inpatient setting can continue their therapy programs such, as rehabilitation services for amputee, brain injury, cardio-pulmonary, orthopedic, spinal cord injury, stroke and neurorehabilitation.

Wellness Centers. Wellness centers typically have gymnasiums, strength and cardiovascular equipment areas, tennis and racquet sports facilities, pools, spas, and children’s centers. Professional sport training and therapist services are often available. Wellness centers often market themselves as clubs providing premium facilities and programs.

Other Types of Real Estate. In the past we have considered investing in real estate different from senior housing properties. We may explore such alternative investments in the future.

Tenants.

Each of our properties is included in one of our 15 leases. The following chart presents a summary of these leases as of December 31, 2007 (dollars in thousands). This summary should be read in conjunction with the more detailed description of our leases set forth below.

Tenant	Number of Properties (units/beds)		Undepreciated Carrying Value of Properties		Net Book Value of Properties		Annual Rent		Lease Expiration	Renewal Options
Five Star Quality Care, Inc. (Lease No. 1)	114 (9,344	)	$	622,200	$	545,450	$	52,868	12/31/20	1 for 15 years.
Five Star Quality Care, Inc. (Lease No. 2)	30 (7,275	)	667,256		570,190		67,917		12/31/17	1 for 10 years. 1 for 5 years.
Five Star Quality Care, Inc. (Rehabilitation Hospitals)	2 (364	)	47,897		33,985		10,598		6/30/26	1 for 20 years.
Sunrise Senior Living, Inc./Marriott International, Inc. (1)	14 (4,091	)	325,165		226,276		31,727		12/31/13	4 for 5 years each.
NewSeasons Assisted Living Communities, Inc. /Independence Blue Cross (2)	10 (873	)	87,641		79,681		9,298		4/30/17	2 for 15 years each.
Alterra Healthcare Corporation/Brookdale Senior Living, Inc. (3)	18 (894	)	61,122		53,449		7,873		12/31/17	2 for 15 years each.
Genesis HealthCare Corporation	1 (156	)	13,007		9,421		1,548		12/31/16	1 for 10 years. 1 for 5 years.
ABE Briarwood Corp	1 (140	)	15,598		5,370		1,294		12/31/10	3 for 10 years each.
HealthQuest,Inc..	3 (361	)	7,589		4,589		1,632		6/30/16	1 for 10 years.
Covenant Care, Inc.	1 (180	)	3,503		2,210		1,131		9/30/15	1 for 15 years.
Evergreen Washington Healthcare, LLC	1 (103	)	5,193		3,119		930		12/31/15	1 for 10 years.
The MacIntosh Company	1 (200	)	4,204		3,010		604		6/30/19	1 for 10 years.
Starmark Holdings, LLC (Wellbridge) (4)	3 (NA	)	32,414		32,262		2,805		2/28/23	3 for 10 years each.
Starmark Holdings, LLC (Wellbridge) (4)	1 (NA	)	11,199		11,166		774		2/28/23	3 for 10 years each.
Starmark Holdings, LLC (Wellbridge) (4)	2 (NA	)	36,359		36,278		2,940		11/30/23	3 for 10 years each.
Totals	202 (23,981	)	$	1,940,347	$	1,616,456	$	193,939

(1)These properties are leased to Sunrise Senior Living, Inc., or Sunrise; this lease is guaranteed by Marriott International, Inc., or Marriott.

(2)These properties are leased to NewSeasons Assisted Living Communities Inc., or NewSeasons; this lease is guaranteed by Independence Blue Cross, a Pennsylvania health insurance company.

(3)These properties are leased to Alterra Healthcare Corporation, or Alterra; this lease is guaranteed by Brookdale Senior Living, Inc., or Brookdale.

(4)These properties are leased to Starmark Holdings, LLC, or Starmark, under three separate leases.

Five Star. We lease 144 senior living communities and two rehabilitation hospitals to Five Star for annual rent of $131.4 million, under six leases.

We have one lease for 30 independent and assisted living properties expiring in 2017 for annual rent of $67.9 million. Five Star pays additional rent equal to 4% of the increase in revenues at these properties over 2005 revenues.

In addition, we have one lease for 93 properties, one for 16 properties, one for four properties and one for one property, all of which expire in 2020. The three smaller leases are on substantially similar terms to the lease for 93 properties. The properties in the three smaller leases secure mortgage debt payable to third parties and the leases provide that upon the repayment of the mortgage debt, the properties will be added to the larger lease. For the purposes of this Annual Report on Form 10-K, we discuss the three smaller leases as part of the lease for 93 properties. At December 31, 2007, this combined lease included 114 senior living properties consisting of 47 nursing homes and 67 independent and assisted living properties leased until 2020 for annual rent of $52.9 million. At 133 of the properties, the leases require additional rent equal to 4% of the increase in revenues above base amounts. Beginning in 2008 and 2009, the leases for the remaining 11 properties require additional rent equal to 4% of the increase in revenues above base amounts.

We also lease two rehabilitation hospitals to Five Star. The term of the lease with Five Star for the two rehabilitation hospitals expires on June 30, 2026, and Five Star has one renewal option. These two hospitals provide health rehabilitation services and are located in Braintree and Woburn, Massachusetts. The annual rent for these two hospitals is $10.6 million per year.

Five Star was formerly our 100% owned subsidiary. We created Five Star in 2000 to operate nursing homes which we repossessed from former tenants who defaulted on their leases. We distributed substantially all of our ownership of Five Star to our shareholders on December 31, 2001. One of our trustees is currently a director of Five Star. Today, Five Star is a separate company listed on the American Stock Exchange under the symbol “FVE” and, as of December 31, 2007, is responsible for 68% of our annual rent. Since it became a separate public company by the spin off to our shareholders, Five Star has not been consistently profitable. However, we believe Five Star has adequate financial resources and liquidity to continue its business and to meet its obligations to us.

As of the date of this report, Five Star has not filed its Annual Report on Form 10-K for the year ended December 31, 2007. Therefore, summary audited financial information regarding Five Star is not now available. We expect to furnish such information by an amendment to this Annual Report on Form 10-K when it becomes available to us.

Sunrise Senior Living, Inc. Until 2003, Marriott Senior Living Services, Inc., or MSLS, was our tenant for the 14 properties leased until 2013 for annual rent of $31.7 million. In March 2003, Marriott sold MSLS to Sunrise, and MSLS changed its name to Sunrise Senior Living Services, Inc., or SLS. SLS is a 100% owned subsidiary of Sunrise. Marriott continues to guarantee the lease for these 14 properties leased to Sunrise.

NewSeasons Assisted Living Communities, Inc. We lease 10 assisted living properties to NewSeasons until 2017, plus renewal options. The rent payable to us averages approximately $9.3 million per year during the initial lease term, although it is currently $8.4 million per year and will increase at agreed times during the lease term. Substantially all of the revenues at these properties are paid by residents from their private resources. NewSeasons is a subsidiary of Independence Blue Cross, or IBC. IBC is a large regional health insurance company based in Philadelphia, Pennsylvania, with reported revenues of approximately $10.5 billion in 2006. IBC has guaranteed NewSeasons’s rent to us.

Alterra Healthcare Corporation / Brookdale Senior Living. We lease 18 assisted living properties to Alterra until 2017, plus renewal options. The annual rent under this lease is $7.9 million per year, including additional rent calculated as a percentage of increases in the revenues at these properties above base amounts. Residents pay a majority of the revenues at these properties from their private resources. Brookdale acquired Alterra in 2003 and Alterra became a subsidiary of Brookdale. Brookdale is a

public company listed on the New York Stock Exchange, or NYSE, under the listing “BKD”. Brookdale has guaranteed Alterra’s rent to us.

Genesis HealthCare Corporation. We lease one nursing home to a subsidiary of Genesis HealthCare Corporation, or Genesis, for $1.5 million of annual rent until 2016, plus renewal options. Genesis has guaranteed the rent payable to us under this lease and we hold a security deposit of $235,000 to secure payment of this rent. In July 2007, Formation Capital and JER Partners acquired Genesis and, as such, Genesis is no longer a publicly traded company.

ABE Briarwood Corp. We lease one skilled nursing facility in Canonsburg, Pennsylvania to a subsidiary of ABE Briarwood Corp., a privately owned company, for $1.3 million of annual rent until 2010, plus renewal options. Our property is sub-leased to THI of Pennsylvania at Greenery of Canonsburg, LLC, a subsidiary of another private company, THI of Baltimore, Inc. Our lease is guaranteed by ABE Briarwood Corp., IHS Long Term Care, Inc. and THI of Baltimore, Inc. and is secured by a security deposit of $600,000.

HealthQuest, Inc. We lease two skilled nursing facilities and one independent living facility located in Huron and Sioux Falls, South Dakota to HealthQuest, Inc., a privately owned company, until 2016, plus a renewal option. The lease is guaranteed by the individual shareholder of HealthQuest, Inc. The rent payable to us averages approximately $1.6 million per year during the initial lease term, although it is currently $1.2 million per year and will increase at agreed times during the lease term.

Covenant Care, Inc. We lease one skilled nursing facility in Fresno, California to a subsidiary of Covenant Care, Inc., a privately owned company, for $1.1 million of annual rent until 2015, plus a renewal option. Covenant Care, Inc. guarantees the lease and has secured its obligation with a security deposit of $900,000.

Evergreen Washington Healthcare, LLC. We lease one skilled nursing facility in Seattle, Washington to a subsidiary of Evergreen Washington Healthcare, LLC, a privately owned company, until 2015, plus a renewal option. The rent payable to us averages $930,000 per year during the lease term, although it is currently $916,000 per year and increases at agreed times during the lease term. Evergreen Washington Healthcare, LLC guarantees this lease and has secured its obligation with a security deposit of $385,000.

The MacIntosh Company. We lease one skilled nursing facility in Grove City, Ohio to The MacIntosh Company for $604,000 of annual rent until 2019, plus a renewal option. A management company affiliate of our tenant and the former and current majority shareholders of the tenant and the management company, which are privately owned, guarantee this lease.

Starmark Holdings, LLC (Wellbridge). We lease six wellness centers located in Bel Air, Maryland (1); Tampa, Florida (1); Atlanta, Georgia (1); and Albuquerque, New Mexico (3) under three separate leases. These properties are leased to subsidiaries of Starmark, a private company, and the leases are guaranteed by Starmark. These leases have a current term expiring in 2023, plus renewal options and require aggregate annual rent of $6.5 million initially, plus consumer price index, or CPI, based increases in the future.

Lease Terms.

Our leases are so-called “triple net” leases which generally require the tenants to indemnify us from liability which may arise by reason of our ownership of the properties. Our lease terms generally require our tenants to maintain the leased properties, at their expense, to remove and dispose of hazardous substances in compliance with applicable law and to maintain insurance for their own and our benefit. In the event of partial damage, condemnation or taking, our tenants are required to rebuild with insurance or other proceeds, if any; in the case of total destruction, condemnation or taking, we receive all insurance or other proceeds and the tenants are required to pay any positive difference in the amount of proceeds and our historical investments in the affected properties; in the event of material destruction or condemnation, some tenants have a right to purchase the affected property for amounts at least equal to our historical investment in that property.

Events of Default. Under our leases, events of default generally include:

· failure of the tenant to pay rent or any other money when due;

· failure of the tenant to provide periodic financial reports when due;

· failure of the tenant to perform other terms, covenants or conditions of its lease and the continuance thereof for a specified period after written notice;

· failure of the tenant to maintain required insurance coverages; or

· revocation of any material license necessary for the tenant’s operation of our property.

Default Remedies. Upon the occurrence of any event of default, we may (subject to applicable law):

· terminate the affected lease and accelerate the rent;

· terminate the tenant’s rights to occupy and use the affected property, rent the property to another tenant and recover from the tenant the difference between the amount of rent which would have been due under the lease and the rent received under the reletting;

· make any payment or perform any act required to be performed by the tenant under its lease;

· exercise our rights with respect to any collateral securing the lease; and

· require the defaulting tenant to reimburse us for all payments made and all costs and expenses incurred in connection with any exercise of the foregoing remedies.

The existence of these triple net lease terms does not guarantee that our tenants will honor their obligations to us.

Investment Policies.

Acquisitions. Our present investment goals are to acquire additional properties primarily for income and secondarily for appreciation potential. In implementing this acquisition strategy, we consider a range of factors relating to proposed acquisitions, including:

· use and size of the property;

· proposed acquisition price;

· proposed lease terms;

· availability and reputation of a financially qualified lessee or guarantor;

· historical and projected cash flows from the operations of the property;

· estimated replacement cost of the property;

· design, physical condition and age of the property;

· competitive market environment of the property;

· price segment and payment sources in which the property is operated; and

· level of permitted services and regulatory history of the property and its historical operators.

We have no policies which specifically limit the percentage of our assets which may be invested in any individual property, in any one type of property, in properties leased to any one tenant or in properties leased to an affiliated group of tenants.

Form of Investments. We prefer wholly-owned investments in fee interests. However, circumstances may arise in which we may invest in leaseholds, joint ventures, mortgages and other real estate interests. We may invest in real estate joint ventures if we conclude that by doing so we may benefit from the participation of co-venturers or that our opportunity to participate in the investment is contingent on the use of a joint venture structure. We may

invest in participating, convertible or other types of mortgages if we conclude that by doing so, we may benefit from the cash flow or appreciation in the value of a property which is not available for purchase.

Mergers and Strategic Combinations.

In the past, we have considered the possibility of entering mergers or strategic combinations with other companies and we may again explore such possibilities in the future.

Disposition Policies.

From time to time we consider the sale of one or more properties or investments. Disposition decisions are made based on a number of factors including, but not limited to, the following:

· our ability to lease the affected property;

· our tenant’s desire to purchase the affected property;

· our tenant’s desire to cease operating the affected property;

· proposed sale price;

· strategic fit of the property or investment with the rest of our portfolio; and

· existence of alternative sources, uses or needs for capital.

We did not sell any properties in 2007. During 2006, we sold three skilled nursing facilities which had been leased to Five Star as part of the combined lease which included other properties. All three skilled nursing facilities were sold to an unaffiliated party. As a result of these sales, Five Star’s rent for the combined lease which included these properties was reduced by a percentage of the net proceeds of sale which we realized.

Financing Policies.

There are no limitations in our organizational documents on the amount of indebtedness we may incur. Our revolving credit facility and our senior note indenture and its supplements contain financial covenants which, among other things, restrict our ability to incur indebtedness and require us to maintain financial ratios and a minimum net worth. However, our board of trustees may seek to amend these covenants or seek replacement financings with less restrictive covenants. In the future, we may decide to seek changes in the financial covenants which currently restrict our debt leverage based upon then current economic conditions, the relative availability and costs of debt versus equity capital and our need for capital to take advantage of acquisition opportunities or otherwise.

Our board of trustees may determine to obtain replacements for our current credit facility or to seek additional capital through equity offerings, debt financings, retention of cash flows in excess of distributions to shareholders, or a combination of these methods. To the extent that our board of trustees decides to obtain additional debt financing, we may do so on an unsecured basis or a secured basis. We may seek to obtain lines of credit or to issue securities senior to our common shares, including preferred shares or debt securities, some of which may be convertible into common shares or be accompanied by warrants to purchase common shares. We may also finance acquisitions by assuming debt, through an exchange of properties or through the issuance of equity or other securities.

Manager.

Our day to day operations are conducted by Reit Management & Research LLC, or RMR. RMR originates and presents investment opportunities to our board of trustees and provides management and administrative services to us. RMR is a Delaware limited liability company beneficially owned by Barry Portnoy and Adam Portnoy, our managing trustees. Adam Portnoy is the President and Chief Executive Officer of RMR. RMR has a principal place of business at 400 Centre Street, Newton Massachusetts, 02458, and its telephone number is (617) 332-3990. RMR also has agreed to provide certain services to Five Star, and RMR has other business interests. The directors of RMR are Gerard M. Martin, Barry Portnoy, Adam Portnoy and David J. Hegarty, our President and

Chief Operating Officer. The executive officers of RMR are: Adam Portnoy, President and Chief Executive Officer; David J. Hegarty, Executive Vice President and Secretary; John G. Murray, Executive Vice President; Evrett W. Benton, Senior Vice President; Ethan S. Bornstein, Senior Vice President; Jennifer B. Clark, Senior Vice President and General Counsel; Richard A. Doyle, Senior Vice President; John R. Hoadley, Senior Vice President; Mark L. Kleifges, Senior Vice President; David M. Lepore, Senior Vice President; Bruce J. Mackey Jr., Senior Vice President; John A. Mannix, Senior Vice President; Thomas M. O’Brien, Senior Vice President; John C. Popeo, Senior Vice President, Treasurer and Chief Financial Officer; and Andrew J. Rebholz, Senior Vice President. Messrs. Hegarty and Doyle are also our officers. Other officers of RMR also serve as officers of other companies to which RMR provides management services.

Employees.

We have no employees. Services which would otherwise be provided by employees are provided by RMR and by our managing trustees and officers. As of February 28, 2008, RMR had approximately 500 full-time employees.

Government Regulation and Reimbursement.

The regulatory environment of the senior living industry is extensive. Most of these laws and regulations affect the manner in which our tenants operate our properties, but these laws and regulations can also impact the values of our properties. Some of the laws that impact our tenants include: state and local licensure laws, laws protecting consumers against deceptive practices and laws generally affecting our tenants’ operation of our properties and how our tenants otherwise conduct their operations, such as fire, health and safety laws and privacy laws; federal and state laws affecting assisted living facilities that participate in Medicaid and skilled nursing facilities and hospitals that participate in both Medicaid and Medicare, mandating allowable costs, pricing, reimbursement procedures and limitations, quality of services and care, food service and physical plants; resident rights (including abuse and neglect laws) and fraud laws; anti-kickback and physicians referral laws; the Americans with Disabilities Act; and safety and health standards set by the federal Occupational Safety and Health Administration. Medicaid funding is available in some, but not all, states for assisted living services. State licensure standards for assisted living, skilled nursing facilities and hospitals apply whether or not facilities accept Medicare or Medicaid funding, and typically cover facility policies, staffing, quality of services and care, resident rights, fire safety and physical plant, and related matters. We are unable to predict the future course of federal, state and local legislation or regulation. Changes in the regulatory framework could have a material adverse effect on the abilities of our tenants to pay our rents and the values of our properties.

Many senior living facilities are subject to regulation and licensing by state and local health and social service agencies or other regulatory authorities. Hospitals are subject to regulations and licensing by state health authorities. In most states in which we own properties, our tenants are prohibited from providing certain levels of service without first obtaining the appropriate licenses. In addition, a certificate of need is required in most states before a skilled nursing facility or hospital can be opened or the services at an existing facility can be expanded. In a few states, certificate of need requirements also apply to assisted living facilities. Senior living facilities and hospitals are also subject to state and local building, zoning, fire and food service codes and must be in compliance with applicable codes before licensing or Medicare/Medicaid certification may be granted. These laws and regulatory requirements could affect our ability to expand into new markets and our tenants’ ability to expand their facilities in existing markets. In addition, if any of our tenants operate our property outside of the scope of their licensed authority, their doing so could subject them to penalties, including closure of the facility.

Healthcare facilities like those that we own seem to be subject to increasing numbers of inspections or surveys and potential enforcement actions by governmental authorities. Unannounced surveys or inspections may occur annually or biannually, or following a state’s receipt of a complaint about the facility. From time to time in the ordinary course of business, our tenants may receive deficiency reports from state regulatory bodies resulting from such inspections or surveys. Most inspection deficiencies are resolved through an agreed plan of corrective action relating to the affected facility’s operations, but the governmental agency typically has the authority to take further action against a licensed or certified facility, which could result in the imposition of civil money penalties or fines, suspension, modification, or revocation of a license or Medicare/Medicaid certification, suspension or denial of admissions, partial or full denial of payments, state oversight, or imposition of other sanctions, including

criminal penalties. Loss, suspension or modification of a license or certification or other sanctions or penalties could adversely affect the ability of a tenant to pay its rents. Our tenants may also expend considerable resources to respond to federal and state investigations or other enforcement actions under applicable laws or regulations. Our tenants receive notices of potential sanctions and enforcement remedies from time to time, and such sanctions and penalties are imposed from time to time on our tenants. If any of our tenants were to fail to comply with any applicable legal requirements, or be unable to cure deficiencies that have been identified or are identified in the future, such sanctions may be imposed and if imposed, may adversely affect the affected tenants’ abilities to pay their rents. State Attorney Generals typically enforce consumer protection laws relating to senior living services and hospitals. Also, state Medicaid fraud control agencies sometimes may investigate and prosecute assisted living and nursing facilities and hospitals under fraud and patient abuse and neglect laws even if the facilities and their residents do not receive federal or state funds.

Certain current state laws and regulations allow enforcement officials to make determinations as to whether the care provided at our tenants exceeds the level of care for which a particular facility is licensed. A finding that a facility is delivering care beyond the scope of its license might result in the immediate discharge and transfer of residents, which could adversely affect the ability of a tenant to pay rent to us. Furthermore, certain states and the federal government may allow citations in one facility to impact other facilities operated by the same entity or a related entity in the state or, in certain circumstances, in another state. Revocation of a license or certification at one facility could therefore impact a tenant’s ability to obtain new licenses or certifications or to renew existing licenses at other facilities, which could adversely affect the ability of that tenant to pay rent to us. In addition, an adverse finding by survey officials may serve as the basis for lawsuits by private plaintiffs and may lead to investigations under federal and state laws, which could result in civil and/or criminal penalties against the facility or a related individual or entity.

Our tenants operate facilities in many states and participate in many federal and state health care payment programs, including state Medicaid waiver programs for services in assisted living facilities, the Medicare and Medicaid skilled nursing facility or hospital benefit programs, and other federal or state health care payment programs. Recent legislative and regulatory actions with respect to state Medicaid rates and federal Medicare rates are limiting the payment levels for certain services provided at these facilities. Because of revenue shortfalls, budget deficits and cost containment measures in numerous states, and the current federal budget deficit and other federal priorities, we expect that Medicaid rate increases will be less than cost increases experienced by some of our tenants in 2007 and that in some instances Medicaid rates may decline, and we are unable to estimate how recent or future Medicare rate changes will affect certain tenants. This combination of events may make it increasingly difficult for some of our tenants to pay rent to us.

Medicare reimburses skilled nursing facilities under a prospective payment system, or the PPS, providing a fixed payment for each day of care provided to a Medicare beneficiary, in accordance with the Resource Utilization Group, or RUG, to which the beneficiary is assigned based on individual medical characteristics and service needs. The PPS payments cover substantially all Medicare Part A services the beneficiary receives. Capital costs are part of the PPS rate and are not facility specific. Many states have similar Medicaid prospective payment systems. Phased in over three years starting in 1998, the PPS was intended to reduce the rate of growth in Medicare payments by giving skilled nursing facilities incentives to furnish only necessary services, and to cause those services to be delivered efficiently. During the first full year of the phase-in, the average Medicare per diem payment declined about 9%, according to the Government Accountability Office. Between November 1999, and January 1, 2006, Congress provided some relief from the impact of the PPS through various temporary increases in payment rates and a temporary moratorium on some therapy limitations for residents covered under Medicare Part B. Effective January 1, 2006, the Federal Centers for Medicare and Medicaid Services, or CMS, revised the PPS RUG payment categories and rates, eliminating the temporary rate increases formerly in effect. For many nursing homes, the PPS revisions effectively eliminated rate increases of 3% that had gone into effect in October 2005. In October 2006, and again in October 2007, the Medicare PPS rates were increased by 3%.

The federal government is also seeking to slow the growth of Medicare and Medicaid payments to skilled nursing facilities pursuant to the Deficit Reduction Act of 2005, or the DRA, enacted in February 2006. Under the DRA, the limits on Medicare Part B payments for outpatient therapies, previously subject to a moratorium, went into effect, subject to an exemption if Medicare found additional services to be medically necessary for an individual. The exemption process was extended through the end of 2007, pursuant to the Tax Relief and Health

Care Act of 2006, enacted in December 2006. Under the Medicare, Medicaid and SCHIP Extension Act of 2007, or the SCHIP Extension Act, enacted in December 2007, the exemption process for therapy services has been extended an additional six months through June 30, 2008. The DRA also reduced Medicare bad debt reimbursement from 100% to 70% for uncollected cost sharing payments from Medicare beneficiaries who are not eligible for Medicaid. In addition, the DRA increased the “look-back” period for prohibited asset transfers that disqualify individuals from receiving Medicaid nursing home benefits, from three to five years. The period of Medicaid ineligibility now begins on the date of the prohibited transfer or the date the individual has entered the nursing home and would otherwise be eligible for Medicaid coverage, whichever occurs later, rather than on the date of the prohibited transfer, effectively extending the Medicaid penalty period.

The DRA also includes provisions that encourage states to provide long term care services in home and community based settings rather than in nursing homes or other inpatient facilities. In 2007, the Secretary of Health and Human services awarded competitive grants for two or more years to a majority of states for demonstration projects to provide home and community based long term care services to individuals relocated from nursing homes, providing an increased federal Medicaid percentage payment for 12 months for each qualifying beneficiary. Also, effective as of January 1, 2007, states may include home and community based services as optional services under their Medicaid state plans. States must establish needs based criteria for the services, and more stringent needs based criteria for nursing home services. They may cap enrollment, maintain waiting lists, and offer the home and community based services in only some parts of a state, as Medicaid waivers allow. The Secretary of Health and Human Services will compare and assess outcomes and costs of long term care services provided at different types of sites.

In 2004, CMS revised the Medicare standards that rehabilitation hospitals are required to meet in order to participate in the Medicare program as IRFs. The rule, known as the “75% rule”, was amended in December 2007 by the SCHIP Extension Act, and now generally provides that, to be considered an IRF and receive reimbursement for services under the IRF PPS, at least 60% of a facility’s total inpatient population must require intensive rehabilitation services associated with treatment of at least one of 13 designated medical conditions. In order to maintain their current levels of Medicare revenues, many rehabilitation hospitals have needed to reduce their numbers of non-qualifying patients and replace them with qualifying patients. Before it was amended in 2007, the 75% rule was being phased in over a four year period that began on July 1, 2004. For cost reporting periods starting on and after July 1, 2006, 60% of a facility’s inpatients must have required intensive rehabilitation services for one of the designated medical conditions. For cost reporting periods starting on and after July 1, 2007, and July 1, 2008, the required percentages were 65% and 75%, respectively. As a result of the 2007 amendment, the minimum requirement is now 60% for these and future cost reporting periods. If Five Star is unable to maintain compliance with this requirement at our rehabilitation hospitals, Medicare rates paid to Five Star at these hospitals could be materially adversely affected.

Our tenants who operate facilities that participate in Medicare, Medicaid and other federal or state health care reimbursement programs are subject to federal and state laws that prohibit anyone from presenting, or causing to be presented, claims for reimbursement that are false, fraudulent or are for items or services that were not provided as claimed. Fraud and false claims laws vary from state to state and these laws are sometimes not interpreted consistently. Violation of any of these laws can result in loss of licensure, civil and criminal penalties and exclusion of health care providers or suppliers from federal and state health care payment programs. An adverse determination concerning any of our tenants’ licenses or eligibility for Medicare or Medicaid reimbursement or the costs of required compliance with applicable federal or state regulations could adversely affect these tenants’ abilities to pay their rent to us.

Our tenants are also subject to certain federal and state laws that regulate financial arrangements by health care providers relating to referrals, such as the federal Anti-Kickback Law, the federal physician referral laws known as the Stark Laws, and certain state referral laws and anti-kickback laws. The federal Anti-Kickback Law makes it unlawful for any person to offer or pay or to solicit or receive any remuneration, directly or indirectly, overtly or covertly, in cash or in kind to induce or in return for referring or recommending for purchase any item or service which is eligible for payment under the Medicare or Medicaid program or other federally funded programs. Authorities have interpreted this statute very broadly to apply to many practices and relationships between health care providers and sources of patient referral. If a tenant were to violate the federal Anti-Kickback Law, it could face criminal penalties and civil sanctions, including fines and possible exclusion from government programs such

as Medicare and Medicaid, which could adversely affect its ability to pay its rents. While we require our tenants to comply with all laws that regulate the operation of our senior living properties, it is difficult to predict how our properties or tenants’ ability to pay their rents could be affected if any of our tenants were subject to an action alleging such violations.

Our tenants are also subject to federal and state laws designed to protect the confidentiality and security of patient health information. The U.S. Department of Health and Human Services has issued rules pursuant to the Health Insurance Portability and Accountability Act of 1996, or HIPAA, that govern our tenants’ use and disclosure of health information at certain HIPAA covered facilities. The costs to comply with these rules may adversely affect the abilities of our tenants to pay their rent to us.

If any of our tenants becomes unable to operate our properties or to pay our rents because it has violated government regulations or payment laws, we may have great difficulty finding a substitute tenant or selling the leased property for a fair price and the value of an affected property may decline materially.

Competition.

We compete for new investments with other real estate investment trusts. We also compete with banks, non-bank finance companies, leasing companies, private equity funds and insurance companies which invest in real estate. Some of these competitors have resources that are greater than ours and have lower costs of capital.

Environmental Matters.

Under various laws, owners of real estate may be required to investigate and clean up hazardous substances present at a property, and may be held liable for property damage or personal injuries that result from such hazardous substances. These laws also expose us to the possibility that we become liable to reimburse the government for damages and costs it incurs in connection with hazardous substances at our properties. We reviewed environmental conditions surveys of the properties we own prior to their purchase. Based upon those surveys we do not believe that any of our properties are subject to material environmental liabilities. However, no assurances can be given that environmental conditions for which we may be liable are not present in our properties or that costs we incur to remediate contamination will not have a material adverse effect on our business or financial condition.

Internet Website.

Our internet website address is www.snhreit.com. Copies of our governance guidelines, code of business conduct and ethics and the charters of our audit, compensation and nominating and governance committees may be obtained free of charge by writing to our Secretary, Senior Housing Properties Trust, 400 Centre Street, Newton, MA 02458 or at our website. We make available, free of charge, on our website, our Annual Reports on Form 10-K, our Quarterly Reports on Form 10-Q, our current reports on Form 8-K and amendments to such reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, or the Exchange Act, as soon as reasonably practicable after such forms are filed with, or furnished to, the SEC. Any shareholder or other interested party who desires to communicate with our non-management trustees, individually or as a group, may do so by filling out a report on our website. Our board also provides a process for security holders to send communications to the entire board. Information about the process for sending communications to our board can be found on our website. Our website address is included several times in this Annual Report on Form 10-K as a textual reference only and the information in the website is not incorporated by reference into this Annual Report on Form 10-K.

Segment Reporting.

As of December 31, 2007, we have two operating segments. The first operating segment provides short term and long term residential facilities that offer dining for residents. Properties in this segment include independent living facilities, assisted living facilities, skilled nursing facilities and rehabilitation hospitals. The second operating segment provides specialized facilities that offer fitness, wellness and spa services to members. All of our facilities are operated by others under long term leases with the Company.

FEDERAL INCOME TAX CONSIDERATIONS

The following summary of federal income tax considerations is based on existing law, and is limited to investors who own our shares as investment assets rather than as inventory or as property used in a trade or business. The summary does not discuss the particular tax consequences that might be relevant to you if you are subject to special rules under federal income tax law, for example if you are:

· a bank, life insurance company, regulated investment company, or other financial institution;

· a broker or dealer in securities or foreign currency;

· a person who has a functional currency other than the U.S. dollar;

· a person who acquires our shares in connection with employment or other performance of services;

· a person subject to alternative minimum tax;

· a person who owns our shares as part of a straddle, hedging transaction, constructive sale transaction, constructive ownership transaction, or conversion transaction; or

· except as specifically described in the following summary, a tax-exempt entity or a foreign person.

The Internal Revenue Code of 1986, as amended, or the IRC, sections that govern federal income tax qualification and treatment of a REIT and its shareholders are complex. This presentation is a summary of applicable IRC provisions, related rules and regulations and administrative and judicial interpretations, all of which are subject to change, possibly with retroactive effect. Future legislative, judicial, or administrative actions or decisions could also affect the accuracy of statements made in this summary. We have not received a ruling from the Internal Revenue Service, or IRS, with respect to any matter described in this summary, and we cannot assure you that the IRS or a court will agree with the statements made in this summary. The IRS or a court could, for example, take a different position, which could result in significant tax liabilities for applicable parties, from that described in this summary with respect to our acquisitions, operations, restructurings or any other matters described in this summary. In addition, this summary is not exhaustive of all possible tax consequences, and does not discuss any estate, gift, state, local, or foreign tax consequences. For all these reasons, we urge you and any prospective acquirer of our shares to consult with a tax advisor about the federal income tax and other tax consequences of the acquisition, ownership and disposition of our shares. Our intentions and beliefs described in this summary are based upon our understanding of applicable laws and regulations that are in effect as of the date of this Annual Report on Form 10-K. If new laws or regulations are enacted which impact us directly or indirectly, we may change our intentions or beliefs.

Your federal income tax consequences may differ depending on whether or not you are a “U.S. shareholder.” For purposes of this summary, a “U.S. shareholder” for federal income tax purposes is:

· a citizen or resident of the United States, including an alien individual who is a lawful permanent resident of the United States or meets the substantial presence residency test under the federal income tax laws;

· an entity treated as a corporation for federal income tax purposes, that is created or organized in or under the laws of the United States, any state thereof or the District of Columbia;

· an estate the income of which is subject to federal income taxation regardless of its source; or

· a trust if a court within the United States is able to exercise primary supervision over the administration of the trust and one or more United States persons have the authority to control all substantial decisions of the trust, or electing trusts in existence on August 20, 1996, to the extent provided in Treasury regulations;

whose status as a U.S. shareholder is not overridden by an applicable tax treaty. Conversely, a “non-U.S. shareholder” is a beneficial owner of our shares who is not a U.S. shareholder. If a partnership (including any entity treated as a partnership for federal income tax purposes) is a beneficial owner of our shares, the tax treatment of a partner in the

partnership generally will depend upon the status of the partner and the activities of the partnership. A beneficial owner that is a partnership and partners in such a partnership should consult their tax advisors about the federal income tax consequences of the acquisition, ownership and disposition of our shares.

Taxation as a REIT

We have elected to be taxed as a REIT under Sections 856 through 860 of the IRC, commencing with our taxable year ending December 31, 1999. Our REIT election, assuming continuing compliance with the then applicable qualification tests, continues in effect for subsequent taxable years. Although no assurance can be given, we believe that we are organized, have operated, and will continue to operate in a manner that qualifies us to be taxed under the IRC as a REIT.

As a REIT, we generally are not subject to federal income tax on our net income distributed as dividends to our shareholders. Distributions to our shareholders generally are included in their income as dividends to the extent of our current or accumulated earnings and profits. Our dividends are not generally entitled to the favorable 15% rate on qualified dividend income, but a portion of our dividends may be treated as capital gain dividends, all as explained below. No portion of any of our dividends is eligible for the dividends received deduction for corporate shareholders. Distributions in excess of current or accumulated earnings and profits generally are treated for federal income tax purposes as return of capital to the extent of a recipient shareholder’s basis in our shares, and will reduce this basis. Our current or accumulated earnings and profits are generally allocated first to distributions made on our preferred shares, if any, and thereafter to distributions made on our common shares. For all these purposes, our distributions include both cash distributions and any in kind distributions of property that we might make.

Our counsel, Sullivan & Worcester LLP, has opined that we have been organized and have qualified as a REIT under the IRC for our 1999 through 2007 taxable years, and that our current investments and plan of operation enable us to continue to meet the requirements for qualification and taxation as a REIT under the IRC. Our continued qualification and taxation as a REIT will depend upon our compliance with various qualification tests imposed under the IRC and summarized below. While we believe that we will satisfy these tests, our counsel has not reviewed and will not review compliance with these tests on a continuing basis. If we fail to qualify as a REIT, we will be subject to federal income taxation as if we were a C corporation and our shareholders will be taxed like shareholders of C corporations. In this event, we could be subject to significant tax liabilities, and the amount of cash available for distribution to our shareholders may be reduced or eliminated.

If we qualify as a REIT and meet the tests described below, we generally will not pay federal income tax on amounts we distribute to our shareholders. However, even if we qualify as a REIT, we may be subject to federal tax in the following circumstances:

· We will be taxed at regular corporate rates on any undistributed “real estate investment trust taxable income,” including our undistributed net capital gains.

· If our alternative minimum taxable income exceeds our taxable income, we may be subject to the corporate alternative minimum tax on our items of tax preference.

· If we have net income from the disposition of “foreclosure property” that is held primarily for sale to customers in the ordinary course of business or from other nonqualifying income from foreclosure property, we will be subject to tax on this income at the highest regular corporate rate, currently 35%.

· If we have net income from prohibited transactions, including dispositions of inventory or property held primarily for sale to customers in the ordinary course of business other than foreclosure property, we will be subject to tax on this income at a 100% rate.

· If we fail to satisfy the 75% gross income test or the 95% gross income test discussed below, but nonetheless maintain our qualification as a REIT, we will be subject to tax at a 100% rate on the greater of the amount by which we fail the 75% or the 95% test, with adjustments, multiplied by a fraction intended to reflect our profitability.

· If we fail to distribute for any calendar year at least the sum of 85% of our REIT ordinary income for that year, 95% of our REIT capital gain net income for that year, and any undistributed taxable income from prior periods, we will be subject to a 4% nondeductible excise tax on the excess of the required distribution over the amounts actually distributed.

· If we acquire an asset from a corporation in a transaction in which our basis in the asset is determined by reference to the basis of the asset in the hands of a present or former C corporation, and if we subsequently recognize gain on the disposition of this asset during the ten year period beginning on the date on which the asset ceased to be owned by the C corporation, then we will pay tax at the highest regular corporate tax rate, which is currently 35%, on the lesser of the excess of the fair market value of the asset over the C corporation’s basis in the asset on the date the asset ceased to be owned by the C corporation, or the gain we recognize in the disposition.

· If we acquire a corporation, to preserve our status as a REIT we must generally distribute all of the C corporation earnings and profits inherited in that acquisition, if any, not later than the end of the taxable year of the acquisition. However, if we fail to do so, relief provisions would allow us to maintain our status as a REIT provided we distribute any subsequently discovered C corporation earnings and profits and pay an interest charge in respect of the period of delayed distribution. As discussed below, we have acquired C corporations in connection with our acquisition of real estate. Our investigations of these C corporations indicated that they did not have undistributed earnings and profits that we inherited but failed to timely distribute. However, upon review or audit, the IRS may disagree.

· As summarized below, REITs are permitted within limits to own stock and securities of a “taxable REIT subsidiary.” A taxable REIT subsidiary is separately taxed on its net income as a C corporation, and is subject to limitations on the deductibility of interest expense paid to its REIT parent. In addition, its REIT parent is subject to a 100% tax on the difference between amounts charged and redetermined rents and deductions, including excess interest.

If and to the extent we invest in properties in foreign jurisdictions, our income from those properties will generally be subject to tax in those jurisdictions. If we continue to operate as we do, then we will distribute our taxable income to our shareholders each year and we will generally not pay federal income tax. As a result, we cannot recover the cost of foreign income taxes imposed on our foreign investments by claiming foreign tax credits against our federal income tax liability. Also, we cannot pass through to our shareholders any foreign tax credits.

If we fail to qualify or elect not to qualify as a REIT, we will be subject to federal income tax in the same manner as a C corporation. Distributions to our shareholders if we do not qualify as a REIT will not be deductible by us nor will distributions be required under the IRC. In that event, distributions to our shareholders will generally be taxable as ordinary dividends potentially eligible for the 15% income tax rate discussed below in “Taxation of U.S. Shareholders” and, subject to limitations in the IRC, will be eligible for the dividends received deduction for corporate shareholders. Also, we will generally be disqualified from qualification as a REIT for the four taxable years following disqualification. If we do not qualify as a REIT for even one year, this could result in reduction or elimination of distributions to our shareholders, or in our incurring substantial indebtedness or liquidating substantial investments in order to pay the resulting corporate-level taxes. The IRC provides certain relief provisions under which we might avoid automatically ceasing to be a REIT for failure to meet certain REIT requirements, all as discussed in more detail below.

REIT Qualification Requirements

General Requirements. Section 856(a) of the IRC defines a REIT as a corporation, trust or association:

(1) that is managed by one or more trustees or directors;

(2) the beneficial ownership of which is evidenced by transferable shares or by transferable certificates of beneficial interest;

(3) that would be taxable, but for Sections 856 through 859 of the IRC, as a C corporation;

(4) that is not a financial institution or an insurance company subject to special provisions of the IRC;

(5) the beneficial ownership of which is held by 100 or more persons;

(6) that is not “closely held” as defined under the personal holding company stock ownership test, as described below; and

(7) that meets other tests regarding income, assets and distributions, all as described below.

Section 856(b) of the IRC provides that conditions (1) through (4) must be met during the entire taxable year and that condition (5) must be met during at least 335 days of a taxable year of 12 months, or during a pro rata part of a taxable year of less than 12 months. Section 856(h)(2) of the IRC provides that neither condition (5) nor (6) need be met for our first taxable year as a REIT. We believe that we have met conditions (1) through (7) during each of the requisite periods ending on or before our most recently completed taxable year, and that we can continue to meet these conditions in future taxable years. There can, however, be no assurance in this regard.

By reason of condition (6), we will fail to qualify as a REIT for a taxable year if at any time during the last half of a year more than 50% in value of our outstanding shares is owned directly or indirectly by five or fewer individuals. To help comply with condition (6), our declaration of trust restricts transfers of our shares. In addition, if we comply with applicable Treasury regulations to ascertain the ownership of our shares and do not know, or by exercising reasonable diligence would not have known, that we failed condition (6), then we will be treated as having met condition (6). However, our failure to comply with these regulations for ascertaining ownership may result in a penalty of $25,000, or $50,000 for intentional violations. Accordingly, we intend to comply with these regulations, and to request annually from record holders of significant percentages of our shares information regarding the ownership of our shares. Under our declaration of trust, our shareholders are required to respond to these requests for information.

For purposes of condition (6), REIT shares held by a pension trust are treated as held directly by the pension trust’s beneficiaries in proportion to their actuarial interests in the pension trust. Consequently, five or fewer pension trusts could own more than 50% of the interests in an entity without jeopardizing that entity’s federal income tax qualification as a REIT. However, as discussed below, if a REIT is a “pension-held REIT,” each pension trust owning more than 10% of the REIT’s shares by value generally may be taxed on a portion of the dividends it receives from the REIT.

The IRC provides that we will not automatically fail to be a REIT if we do not meet conditions (1) through (6), provided we can establish reasonable cause for any such failure. Each such excused failure will result in the imposition of a $50,000 penalty instead of REIT disqualification. It is impossible to state whether in all circumstances we would be entitled to the benefit of this relief provision. This relief provision applies to any failure of the applicable conditions, even if the failure first occurred in a prior taxable year, as long as each of the requirements of the relief provision is satisfied after October 22, 2004.

Our Wholly-Owned Subsidiaries and Our Investments through Partnerships. Except in respect of taxable REIT subsidiaries as discussed below, Section 856(i) of the IRC provides that any corporation, 100% of whose stock is held by a REIT, is a qualified REIT subsidiary and shall not be treated as a separate corporation. The assets, liabilities and items of income, deduction and credit of a qualified REIT subsidiary are treated as the REIT’s. We believe that each of our direct and indirect wholly-owned subsidiaries, other than the taxable REIT subsidiaries discussed below, will either be a qualified REIT subsidiary within the meaning of Section 856(i) of the IRC, or a noncorporate entity that for federal income tax purposes is not treated as separate from its owner under regulations issued under Section 7701 of the IRC. Thus, except for the taxable REIT subsidiaries discussed below, in applying all the federal income tax REIT qualification requirements described in this summary, all assets, liabilities and items of income, deduction and credit of our direct and indirect wholly-owned subsidiaries are treated as ours.

We may invest in real estate through one or more limited or general partnerships or limited liability companies that are treated as partnerships for federal income tax purposes. In the case of a REIT that is a partner in a partnership, regulations under the IRC provide that, for purposes of the REIT qualification requirements regarding income and assets discussed below, the REIT is deemed to own its proportionate share of the assets of the partnership

corresponding to the REIT’s proportionate capital interest in the partnership and is deemed to be entitled to the income of the partnership attributable to this proportionate share. In addition, for these purposes, the character of the assets and gross income of the partnership generally retain the same character in the hands of the REIT. Accordingly, our proportionate share of the assets, liabilities, and items of income of each partnership in which we are a partner is treated as ours for purposes of the income tests and asset tests discussed below. In contrast, for purposes of the distribution requirement discussed below, we must take into account as a partner our share of the partnership’s income as determined under the general federal income tax rules governing partners and partnerships under Sections 701 through 777 of the IRC.

Taxable REIT Subsidiaries. We are permitted to own any or all of the securities of a “taxable REIT subsidiary” as defined in Section 856(l) of the IRC, provided that no more than 20% of our assets, at the close of each quarter, is comprised of our investments in the stock or securities of our taxable REIT subsidiaries. Among other requirements, a taxable REIT subsidiary must:

(1) be a non-REIT corporation for federal income tax purposes in which we directly or indirectly own shares;

(2) join with us in making a taxable REIT subsidiary election;

(3) not directly or indirectly operate or manage a lodging facility or a health care facility; and

(4) not directly or indirectly provide to any person, under a franchise, license, or otherwise, rights to any brand name under which any lodging facility or health care facility is operated, except that in limited circumstances a subfranchise, sublicense or similar right can be granted to an independent contractor to operate or manage a lodging facility.

In addition, a corporation other than a REIT in which a taxable REIT subsidiary directly or indirectly owns more than 35% of the voting power or value will automatically be treated as a taxable REIT subsidiary. Subject to the discussion below, we believe that we and each of our taxable REIT subsidiaries have complied with, and will continue to comply with, the requirements for taxable REIT subsidiary status during all times each subsidiary’s taxable REIT subsidiary election remains in effect, and we believe that the same will be true for any taxable REIT subsidiary that we later form or acquire.

Our ownership of stock and securities in taxable REIT subsidiaries is exempt from the 10% and 5% REIT asset tests discussed below. Also, as discussed below, taxable REIT subsidiaries can perform services for our tenants without disqualifying the rents we receive from those tenants under the 75% or 95% gross income tests discussed below. Moreover, because taxable REIT subsidiaries are taxed as C corporations that are separate from us, their assets, liabilities and items of income, deduction and credit are not generally imputed to us for purposes of the REIT qualification requirements described in this summary. Therefore, taxable REIT subsidiaries can generally undertake third-party management and development activities and activities not related to real estate.

Restrictions are imposed on taxable REIT subsidiaries to ensure that they will be subject to an appropriate level of federal income taxation. For example, a taxable REIT subsidiary may not deduct interest paid in any year to an affiliated REIT to the extent that the interest payments exceed, generally, 50% of the taxable REIT subsidiary’s adjusted taxable income for that year. However, the taxable REIT subsidiary may carry forward the disallowed interest expense to a succeeding year, and deduct the interest in that later year subject to that year’s 50% adjusted taxable income limitation. In addition, if a taxable REIT subsidiary pays interest, rent, or other amounts to its affiliated REIT in an amount that exceeds what an unrelated third party would have paid in an arm’s length transaction, then the REIT generally will be subject to an excise tax equal to 100% of the excessive portion of the payment. Finally, if in comparison to an arm’s length transaction, a tenant has overpaid rent to the REIT in exchange for underpaying the taxable REIT subsidiary for services rendered, then the REIT may be subject to an excise tax equal to 100% of the overpayment. There can be no assurance that arrangements involving our taxable REIT subsidiaries will not result in the imposition of one or more of these deduction limitations or excise taxes, but we do not believe that we are or will be subject to these impositions.

As of January 1, 2001, we acquired 100% ownership of several formerly 99% owned corporate subsidiaries, and filed a taxable REIT subsidiary election with each of these subsidiaries effective January 1, 2001. These elections were revoked early in taxable year 2002, in connection with our spin-off of Five Star Quality Care, Inc. and our associated diminished ownership of these subsidiaries. We have received an opinion of counsel that it is more likely than not that these subsidiaries were taxable REIT subsidiaries from January 1, 2001 until the revocation of the taxable REIT subsidiary elections. We had submitted a private letter ruling request to the IRS to confirm that these subsidiaries complied with the requirement that prohibits the direct or indirect operation or management of a healthcare facility by a taxable REIT subsidiary, but withdrew this request before any IRS ruling was issued. If it is determined that these subsidiaries were ineligible for taxable REIT subsidiary status, we believe that the subsidiaries would instead have been qualified REIT subsidiaries under Section 856(i) of the IRC as of January 1, 2001 because we owned 100% of them and they were not properly classified as taxable REIT subsidiaries. As our qualified REIT subsidiaries, the gross income from the subsidiaries’ healthcare facilities would be treated as our own, and as a general matter would be nonqualifying income for purposes of the 75% and 95% gross income tests discussed below. However, we took steps to qualify for the 75% and 95% gross income tests under the relief provision described below. Thus, even if the IRS or a court ultimately determines that these subsidiaries failed to qualify as our taxable REIT subsidiaries, and that this failure thereby implicated our compliance with the 75% and 95% gross income tests discussed below, we expect we would qualify for the gross income tests’ relief provision and thereby preserve our qualification as a REIT. If this relief provision were to apply to us, we would be subject to tax at a 100% rate on the greater of the amount by which we failed the 75% or the 95% gross income test, with adjustments, multiplied by a fraction intended to reflect our profitability for the taxable year; however, we would expect to owe little or no tax in these circumstances.

Income Tests. There are two gross income requirements for qualification as a REIT under the IRC:

· At least 75% of our gross income, excluding gross income from sales or other dispositions of property held primarily for sale, must be derived from investments relating to real property, including “rents from real property” as defined under Section 856 of the IRC, mortgages on real property, income and gain from foreclosure property, or shares in other REITs. When we receive new capital in exchange for our shares or in a public offering of five-year or longer debt instruments, income attributable to the temporary investment of this new capital in stock or a debt instrument, if received or accrued within one year of our receipt of the new capital, is generally also qualifying income under the 75% gross income test.

· At least 95% of our gross income, excluding gross income from sales or other dispositions of property held primarily for sale, must be derived from a combination of items of real property income that satisfy the 75% gross income test described above, dividends, interest, gains from the sale or disposition of stock, securities, or real property or, for financial instruments entered into during our 2004 or earlier taxable years, certain payments under interest rate swap or cap agreements, options, futures contracts, forward rate agreements or similar financial instruments. But for financial instruments entered into during our 2005 or later taxable years, the 95% gross income test has been modified as follows: except as may be provided in Treasury regulations, gross income for these purposes no longer includes income from a “hedging transaction” as defined under clauses (ii) and (iii) of Section 1221(b)(2)(A) of the IRC, but only to the extent that (A) the transaction hedges indebtedness we incur to acquire or carry real estate assets, and (B) the hedging transaction was “clearly identified,” meaning that the transaction must be identified as a hedging transaction before the end of the day on which it is entered and the risks being hedged must be identified generally within 35 days after the date the transaction is entered.

For purposes of the 75% and 95% gross income tests outlined above, income derived from a “shared appreciation provision” in a mortgage loan is generally treated as gain recognized on the sale of the property to which it relates. Although we will use our best efforts to ensure that the income generated by our investments will be of a type that satisfies both the 75% and 95% gross income tests, there can be no assurance in this regard.

In order to qualify as “rents from real property” under Section 856 of the IRC, several requirements must be met:

· The amount of rent received generally must not be based on the income or profits of any person, but may be based on receipts or sales.

· Rents do not qualify if the REIT owns 10% or more by vote or value of the tenant, whether directly or after application of attribution rules. While we intend not to lease property to any party if rents from that property would not qualify as rents from real property, application of the 10% ownership rule is dependent upon complex attribution rules and circumstances that may be beyond our control. For example, an unaffiliated third party’s ownership directly or by attribution of 10% or more by value of our shares, as well as 10% or more by vote or value of the stock of one of our tenants, would result in that tenant’s rents not qualifying as rents from real property. Our declaration of trust disallows transfers or purported acquisitions, directly or by attribution, of our shares to the extent necessary to maintain our REIT status under the IRC. Nevertheless, there can be no assurance that these provisions in our declaration of trust will be effective to prevent our REIT status from being jeopardized under the 10% affiliated tenant rule. Furthermore, there can be no assurance that we will be able to monitor and enforce these restrictions, nor will our shareholders necessarily be aware of ownership of shares attributed to them under the IRC’s attribution rules.

· There is a limited exception to the above prohibition on earning “rents from real property” from a 10% affiliated tenant, if the tenant is a taxable REIT subsidiary. If at least 90% of the leased space of a property is leased to tenants other than taxable REIT subsidiaries and 10% affiliated tenants, and if the taxable REIT subsidiary’s rent for space at that property is substantially comparable to the rents paid by nonaffiliated tenants for comparable space at the property, then otherwise qualifying rents paid by the taxable REIT subsidiary to the REIT will not be disqualified on account of the rule prohibiting 10% affiliated tenants.

· In order for rents to qualify, we generally must not manage the property or furnish or render services to the tenants of the property, except through an independent contractor from whom we derive no income or, for our 2001 taxable year and thereafter, through one of our taxable REIT subsidiaries. There is an exception to this rule permitting a REIT to perform customary tenant services of the sort that a tax-exempt organization could perform without being considered in receipt of “unrelated business taxable income” as defined in Section 512(b)(3) of the IRC. In addition, a de minimis amount of noncustomary services will not disqualify income as “rents from real property” so long as the value of the impermissible services does not exceed 1% of the gross income from the property.

· If rent attributable to personal property leased in connection with a lease of real property is 15% or less of the total rent received under the lease, then the rent attributable to personal property will qualify as “rents from real property” if this 15% threshold is exceeded, the rent attributable to personal property will not so qualify. For our taxable years through December 31, 2000, the portion of rental income treated as attributable to personal property was determined according to the ratio of the tax basis of the personal property to the total tax basis of the real and personal property that is rented. For our 2001 taxable year and thereafter, the ratio is determined by reference to fair market values rather than tax bases.

We believe that all or substantially all our rents have qualified and will qualify as rents from real property for purposes of Section 856 of the IRC.

In order to qualify as mortgage interest on real property for purposes of the 75% test, interest must derive from a mortgage loan secured by real property with a fair market value, at the time the loan is made, at least equal to the amount of the loan. If the amount of the loan exceeds the fair market value of the real property, the interest will be treated as interest on a mortgage loan in a ratio equal to the ratio of the fair market value of the real property to the total amount of the mortgage loan.

Absent the “foreclosure property” rules of Section 856(e) of the IRC, a REIT’s receipt of business operating income from a property would not qualify under the 75% and 95% gross income tests. But as foreclosure property, gross income from such a business operation would so qualify. In the case of property leased by a REIT to a tenant, foreclosure property is defined under applicable Treasury regulations to include generally the real property and incidental personal property that the REIT reduces to possession upon a default or imminent default under the lease by the tenant, and as to which a foreclosure property election is made by attaching an appropriate statement to the REIT’s federal income tax return.

Any gain that a REIT recognizes on the sale of foreclosure property, plus any income it receives from foreclosure property that would not qualify under the 75% gross income test in the absence of foreclosure property

treatment, reduced by expenses directly connected with the production of those items of income, would be subject to income tax at the maximum corporate rate, currently 35%, under the foreclosure property income tax rules of Section 857(b)(4) of the IRC. Thus, if a REIT should lease foreclosure property in exchange for rent that qualifies as “rents from real property” as described above, then that rental income is not subject to the foreclosure property income tax. As discussed below, these foreclosure property rules do not apply to the two hospitals that were the subject of our dispute with HealthSouth Corporation, or HealthSouth.

From the inception of our dispute through the end of both our 2004 and 2005 taxable years, HealthSouth remained in possession of the two hospitals and only paid us amounts that were in the nature of “rents from real property”. We attached a statement to both our 2004 and 2005 federal income tax returns that summarized our dispute with HealthSouth and expressed our intent that a foreclosure property election apply to the two subject hospitals when and if appropriate. But because the only amounts we received from HealthSouth through the end of our 2004 and 2005 taxable years were in the nature of “rents from real property”, we believe that our 2004 and 2005 income from the two hospitals was qualifying income for purposes of the 75% and 95% gross income tests, and that no foreclosure property income tax was owed on such amounts.

In 2006 we settled our litigation with HealthSouth by reinstating our lease with them through September 30, 2006 in exchange for a fixed rental sum. Again, because the only amounts we received from HealthSouth in 2006 were in the nature of “rents from real property”, we believe that our 2006 income from the two hospitals was qualifying income for purposes of the 75% and 95% gross income tests, and that no foreclosure property income tax was owed on such amounts. Effective October 1, 2006, we leased these two hospitals to a healthcare operating company, Five Star, and the rental income under this new lease is intended to be “rents from real property” that qualify for purposes of the 75% and 95% gross income tests.

Other than sales of foreclosure property, any gain we realize on the sale of property held as inventory or other property held primarily for sale to customers in the ordinary course of business will be treated as income from a prohibited transaction that is subject to a penalty tax at a 100% rate. This prohibited transaction income also may adversely affect our ability to satisfy the 75% and 95% gross income tests for federal income tax qualification as a REIT. We cannot provide assurances as to whether or not the IRS might successfully assert that one or more of our dispositions is subject to the 100% penalty tax. However, we believe that dispositions of assets that we have made or that we might make in the future will not be subject to the 100% penalty tax, because we intend to:

· own our assets for investment with a view to long-term income production and capital appreciation;

· engage in the business of developing, owning and operating our existing properties and acquiring, developing, owning and operating new properties; and

· make occasional dispositions of our assets consistent with our long-term investment objectives.

If we fail to satisfy one or both of the 75% or the 95% gross income tests in any taxable year, we may nevertheless qualify as a REIT for that year if we satisfy the following requirements after October 22, 2004:

· our failure to meet the test is due to reasonable cause and not due to willful neglect, and

· after we identify the failure, we file a schedule describing each item of our gross income included in the 75% or 95% gross income tests for that taxable year.

It is impossible to state whether in all circumstances we would be entitled to the benefit of this relief provision for the 75% and 95% gross income tests. Even if this relief provision does apply, a 100% tax is imposed upon the greater of the amount by which we failed the 75% test or the 95% test, with adjustments, multiplied by a fraction intended to reflect our profitability. This relief provision applies to any failure of the applicable income tests, even if the failure first occurred in a prior taxable year, as long as each of the requirements of the relief provision is satisfied after October 22, 2004.

Under prior law, if we failed to satisfy one or both of the 75% or 95% gross income tests, we nevertheless would have qualified as a REIT for that year if: our failure to meet the test was due to reasonable cause and not due

to willful neglect; we reported the nature and amount of each item of our income included in the 75% or 95% gross income tests for that taxable year on a schedule attached to our tax return; and any incorrect information on the schedule was not due to fraud with intent to evade tax. For our 2004 and prior taxable years, we attached a schedule of gross income to our federal income tax returns, but it is impossible to state whether in all circumstances we would be entitled to the benefit of this prior relief provision for the 75% and 95% gross income tests. Even if this relief provision did apply, a 100% tax is imposed upon the greater of the amount by which we failed the 75% test or the 95% test, with adjustments, multiplied by a fraction intended to reflect our profitability.

Asset Tests. At the close of each quarter of each taxable year, we must also satisfy the following asset percentage tests in order to qualify as a REIT for federal income tax purposes:

· At least 75% of our total assets must consist of real estate assets, cash and cash items, shares in other REITs, government securities, and temporary investments of new capital (that is, stock or debt instruments purchased with proceeds of a stock offering or a public offering of our debt with a term of at least five years, but only for the one-year period commencing with our receipt of the offering proceeds).

· Not more than 25% of our total assets may be represented by securities other than those securities that count favorably toward the preceding 75% asset test.

· Of the investments included in the preceding 25% asset class, the value of any one non-REIT issuer’s securities that we own may not exceed 5% of the value of our total assets, and we may not own more than 10% of any one non-REIT issuer’s outstanding voting securities. For our 2001 taxable year and thereafter, we may not own more than 10% of the vote or value of any one non-REIT issuer’s outstanding securities, unless that issuer is our taxable REIT subsidiary or the securities are “straight debt” securities or otherwise excepted as discussed below.

· For our 2001 taxable year and thereafter, our stock and securities in a taxable REIT subsidiary are exempted from the preceding 10% and 5% asset tests. However, no more than 20% of our total assets may be represented by stock or securities of taxable REIT subsidiaries.

When a failure to satisfy the above asset tests results from an acquisition of securities or other property during a quarter, the failure can be cured by disposition of sufficient nonqualifying assets within 30 days after the close of that quarter.

In addition, if we fail the 5% value test or the 10% vote or value tests at the close of any quarter and do not cure such failure within 30 days after the close of that quarter, that failure will nevertheless be excused if (a) the failure is de minimis and (b) within 6 months after the last day of the quarter in which we identify the failure, we either dispose of the assets causing the failure or otherwise satisfy the 5% value and 10% vote and value asset tests. For purposes of this relief provision, the failure will be “de minimis” if the value of the assets causing the failure does not exceed the lesser of (a) 1% of the total value of our assets at the end of the relevant quarter or (b) $10,000,000. If our failure is not de minimis, or if any of the other REIT asset tests have been violated, we may nevertheless qualify as a REIT if (a) we provide the IRS with a description of each asset causing the failure, (b) the failure was due to reasonable cause and not willful neglect, (c) we pay a tax equal to the greater of (i) $50,000 or (ii) the highest rate of corporate tax imposed (currently 35%) on the net income generated by the assets causing the failure during the period of the failure, and (d) within 6 months after the last day of the quarter in which we identify the failure, we either dispose of the assets causing the failure or otherwise satisfy all of the REIT asset tests. These relief provisions apply to any failure of the applicable asset tests, even if the failure first occurred in a prior taxable year, as long as each of the requirements of the relief provision is satisfied after October 22, 2004.

The IRC also provides, for our 2001 taxable year and thereafter, an excepted securities safe harbor to the 10% value test that includes among other items (a) “straight debt” securities, (b) certain rental agreements in which payment is to be made in subsequent years, (c) any obligation to pay rents from real property, (d) securities issued by governmental entities that are not dependent in whole or in part on the profits of or payments from a nongovernmental entity, and (e) any security issued by another REIT.

We intend to maintain records of the value of our assets to document our compliance with the above asset tests, and to take actions as may be required to cure any failure to satisfy the tests within 30 days after the close of any quarter.

Our Relationship with Five Star. In 2001, we and HRPT Properties Trust spun off substantially all of our Five Star common shares. In addition, our leases with Five Star, Five Star’s charter and bylaws, and the transaction agreement governing the spin-off contain restrictions upon the ownership of Five Star common shares and require Five Star to refrain from taking any actions that may jeopardize our qualification as a REIT under the IRC, including actions which would result in our or our once significant shareholder, HRPT Properties Trust, obtaining actual or constructive ownership of 10% or more of the Five Star common shares. Accordingly, commencing with our 2002 taxable year, we expect that the rental income we receive from Five Star and its subsidiaries will be “rents from real property,” and thus qualifying income under the 75% and 95% gross income tests described above.

Annual Distribution Requirements. In order to qualify for taxation as a REIT under the IRC, we are required to make annual distributions other than capital gain dividends to our shareholders in an amount at least equal to the excess of:

(A) the sum of 90% of our “real estate investment trust taxable income,” as defined in Section 857 of the IRC, computed by excluding any net capital gain and before taking into account any dividends paid deduction for which we are eligible, and 90% of our net income after tax, if any, from property received in foreclosure, over

(B) the sum of our qualifying noncash income, e.g., imputed rental income or income from transactions inadvertently failing to qualify as like-kind exchanges.

The distributions must be paid in the taxable year to which they relate, or in the following taxable year if declared before we timely file our tax return for the earlier taxable year and if paid on or before the first regular distribution payment after that declaration. If a dividend is declared in October, November, or December to shareholders of record during one of those months, and is paid during the following January, then for federal income tax purposes the dividend will be treated as having been both paid and received on December 31 of the prior taxable year. A distribution which is not pro rata within a class of our beneficial interests entitled to a distribution, or which is not consistent with the rights to distributions among our classes of beneficial interests, is a preferential distribution that is not taken into consideration for purposes of the distribution requirements, and accordingly the payment of a preferential distribution could affect our ability to meet the distribution requirements. Taking into account our distribution policies, including the dividend reinvestment plan we have adopted, we expect that we will not make any preferential distributions. The distribution requirements may be waived by the IRS if a REIT establishes that it failed to meet them by reason of distributions previously made to meet the requirements of the 4% excise tax discussed below. To the extent that we do not distribute all of our net capital gain and all of our real estate investment trust taxable income, as adjusted, we will be subject to tax on undistributed amounts.

In addition, we will be subject to a 4% nondeductible excise tax to the extent we fail within a calendar year to make required distributions to our shareholders of 85% of our ordinary income and 95% of our capital gain net income plus the excess, if any, of the “grossed up required distribution” for the preceding calendar year over the amount treated as distributed for that preceding calendar year. For this purpose, the term “grossed up required distribution” for any calendar year is the sum of our taxable income for the calendar year without regard to the deduction for dividends paid and all amounts from earlier years that are not treated as having been distributed under the provision. We will be treated as having sufficient earnings and profits to treat as a dividend any distribution by us up to the amount required to be distributed in order to avoid imposition of the 4% excise tax.

If we do not have enough cash or other liquid assets to meet the 90% distribution requirements, we may find it necessary and desirable to arrange for new debt or equity financing to provide funds for required distributions in order to maintain our REIT status. We can provide no assurance that financing would be available for these purposes on favorable terms.

We may be able to rectify a failure to pay sufficient dividends for any year by paying “deficiency dividends” to shareholders in a later year. These deficiency dividends may be included in our deduction for dividends paid for the earlier year, but an interest charge would be imposed upon us for the delay in distribution.

Although we may be able to avoid being taxed on amounts distributed as deficiency dividends, we will remain liable for the 4% excise tax discussed above.

In addition to the other distribution requirements above, to preserve our status as a REIT we are required to timely distribute C corporation earnings and profits that we inherit from acquired corporations.

Acquisition of C Corporations

On January 11, 2002, we acquired all of the outstanding stock of a C corporation. At the time of that acquisition, this C corporation directly or indirectly owned all of the outstanding equity interests in various corporate and noncorporate subsidiaries. On October 1, 2006, we acquired all of the outstanding stock of an S corporation and its disregarded entity subsidiary, which were formerly C corporations. Upon our acquisition, each of the acquired entities became either our qualified REIT subsidiary under Section 856(i) of the IRC or a disregarded entity under Treasury regulations issued under Section 7701 of the IRC. Thus, after the acquisition, all assets, liabilities and items of income, deduction and credit of the acquired entities have been treated as ours for purposes of the various REIT qualification tests described above. In addition, we generally were treated as the successor to the acquired entities’ federal income tax attributes, such as those entities’ adjusted tax bases in their assets and their depreciation schedules; we were also treated as the successor to the acquired corporate entities’ earnings and profits for federal income tax purposes, if any.

Built-in Gains from C Corporations. As described above, notwithstanding our qualification and taxation as a REIT, we may still be subject to corporate taxation in particular circumstances. Specifically, if we acquire an asset from a corporation in a transaction in which our adjusted tax basis in the asset is determined by reference to the adjusted tax basis of that asset in the hands of a present or former C corporation, and if we subsequently recognize gain on the disposition of that asset during the ten year period beginning on the date on which the asset ceased to be owned by the C corporation, then we will generally pay tax at the highest regular corporate tax rate, currently 35%, on the lesser of (1) the excess, if any, of the asset’s fair market value over its adjusted tax basis, each determined as of the time the asset ceased to be owned by the C corporation, or (2) our gain recognized in the disposition. Accordingly, any taxable disposition of an asset so acquired during the applicable ten-year period could be subject to tax under these rules. However, except as described below, we have not disposed, and have no present plan or intent to dispose, of any material assets acquired in such transactions.

Also on January 11, 2002, we conveyed to Five Star and its subsidiaries operating assets that were of a type that are typically owned by the tenant of a senior living facility. In exchange, Five Star and its subsidiaries assumed related operating liabilities. The aggregate adjusted tax basis in the transferred operating assets was less than the related liabilities assumed, and Five Star and its subsidiaries received a cash payment from us in the amount of the difference. We believe that the fair market value of these conveyed operating assets equaled their adjusted tax bases, and we and Five Star agreed to perform our respective tax return reporting to that effect. Accordingly, although Sullivan & Worcester LLP is unable to render an opinion on factual determinations such as assets’ fair market value, we reported no gain or loss, and therefore owed no corporate level tax under the rules for dispositions of former C corporation assets, in respect of this conveyance of operating assets to Five Star.

To the extent of our gains in a taxable year that are subject to the built in gains tax described above, net of any taxes paid on such gains with respect to that taxable year, our taxable dividends paid to you in the following year will be eligible for treatment as qualified dividends that are taxed to our noncorporate shareholders at the maximum capital gain rate of 15% while that rate is in effect.

Earnings and Profits. A REIT may not have any undistributed C corporation earnings and profits at the end of any taxable year. Upon the closing of our 2002 and 2006 transactions, we succeeded to the undistributed earnings and profits, if any, of the acquired corporate entities. Thus, we needed to distribute all of these earnings and profits no later than the end of the applicable tax year. If we failed to do so, we will not qualify to be taxed as a REIT unless we are able to rely on the relief provision described below.

Although Sullivan & Worcester LLP is unable to render an opinion on factual determinations such as the amount of undistributed earnings and profits, we made an investigation of the amount of undistributed earnings and profits that we inherited in the 2002 and 2006 transactions. We believe that we did not acquire any undistributed

earnings and profits in this transaction that remained undistributed by the end of the applicable tax year. However, there can be no assurance that the IRS would not, upon subsequent examination, propose adjustments to our calculation of the undistributed earnings and profits that we inherited. In examining the calculation of undistributed earnings and profits that we inherited, the IRS might consider all taxable years of the acquired subsidiaries as open for review for purposes of its proposed adjustments. If it is subsequently determined that we had undistributed earnings and profits from the 2002 or 2006 transaction at the applicable year end, we may be eligible for a relief provision similar to the “deficiency dividends” procedure described above. To utilize this relief provision, we would have to pay an interest charge for the delay in distributing the undistributed earnings and profits; in addition, we would be required to distribute to our shareholders, in addition to our other REIT distribution requirements, the amount of the undistributed earnings and profits less the interest charge paid.

Depreciation and Federal Income Tax Treatment of Leases

Our initial tax bases in our assets will generally be our acquisition cost. We will generally depreciate our real property on a straight-line basis over 40 years and our personal property over the applicable shorter periods. These depreciation schedules may vary for properties that we acquire through tax-free or carryover basis acquisitions.

The initial tax bases and depreciation schedules for our assets we held immediately after we were spun off in 1999 from HRPT depends upon whether the deemed exchange that resulted from that spin-off was an exchange under Section 351(a) of the IRC. We believe that Section 351(a) treatment was appropriate. Therefore, we carried over HRPT’s tax basis and depreciation schedule in each of the assets, and to the extent that HRPT recognized gain on an asset in the deemed exchange, we obtained additional tax basis in that asset which we depreciate in the same manner as we depreciate newly purchased assets. In contrast, if Section 351(a) treatment was not appropriate for the deemed exchange, then we will be treated as though we acquired all our assets at the time of the spin-off in a fully taxable acquisition, thereby acquiring aggregate tax bases in these assets equal to the aggregate amount realized by HRPT in the deemed exchange, and it would then be appropriate to depreciate these tax bases in the same manner as we depreciate newly purchased assets. We believe, and Sullivan & Worcester LLP has opined, that it is likely that the deemed exchange was an exchange under Section 351(a) of the IRC, and we have performed and will perform all our tax reporting accordingly. We may be required to amend these tax reports, including those sent to our shareholders, if the IRS successfully challenges our position that the deemed exchange was an exchange under Section 351(a) of the IRC. We intend to comply with the annual REIT distribution requirements regardless of whether the deemed exchange was an exchange under Section 351(a) of the IRC.

We are entitled to depreciation deductions from our facilities only if we are treated for federal income tax purposes as the owner of the facilities. This means that the leases of the facilities must be classified for federal income tax purposes as true leases, rather than as sales or financing arrangements, and we believe this to be the case. In the case of sale-leaseback arrangements, the IRS could assert that we realized prepaid rental income in the year of purchase to the extent that the value of a leased property, at the time of purchase, exceeded the purchase price for that property. While we believe that the value of leased property at the time of purchase did not exceed purchase prices, because of the lack of clear precedent we cannot provide assurances as to whether the IRS might successfully assert the existence of prepaid rental income in any of our sale-leaseback transactions.

Taxation of U.S. Shareholders

The maximum individual federal income tax rate for long-term capital gains is generally 15% (for taxable years that begin on or before December 31, 2010) and for most corporate dividends is generally also 15% (for taxable years that begin on or before December 31, 2010). However, because we are not generally subject to federal income tax on the portion of our REIT taxable income or capital gains distributed to our shareholders, dividends on our shares generally are not eligible for such 15% tax rate on dividends. As a result, our ordinary dividends continue to be taxed at the higher federal income tax rates applicable to ordinary income. However, the 15% federal income tax rate for long-term capital gains and dividends generally applies to:

(1) your long-term capital gains, if any, recognized on the disposition of our shares;

(2) our distributions designated as long-term capital gain dividends (except to the extent attributable to real estate depreciation recapture, in which case the distributions are subject to a 25% federal income tax rate);

(3) our dividends attributable to dividends, if any, received by us from non-REIT corporations such as taxable REIT subsidiaries; and

(4) our dividends to the extent attributable to income upon which we have paid federal corporate income tax.

As long as we qualify as a REIT for federal income tax purposes, a distribution to our U.S. shareholders that we do not designate as a capital gain dividend will be treated as an ordinary income dividend to the extent of our current or accumulated earnings and profits. Distributions made out of our current or accumulated earnings and profits that we properly designate as capital gain dividends will be taxed as long-term capital gains, as discussed below, to the extent they do not exceed our actual net capital gain for the taxable year. However, corporate shareholders may be required to treat up to 20% of any capital gain dividend as ordinary income under Section 291 of the IRC.

In addition, we may elect to retain net capital gain income and treat it as constructively distributed. In that case:

(1) we will be taxed at regular corporate capital gains tax rates on retained amounts;

(2) each U.S. shareholder will be taxed on its designated proportionate share of our retained net capital gains as though that amount were distributed and designated a capital gain dividend;

(3) each U.S. shareholder will receive a credit for its designated proportionate share of the tax that we pay;

(4) each U.S. shareholder will increase its adjusted basis in our shares by the excess of the amount of its proportionate share of these retained net capital gains over its proportionate share of this tax that we pay; and

(5) both we and our corporate shareholders will make commensurate adjustments in our respective earnings and profits for federal income tax purposes.

If we elect to retain our net capital gains in this fashion, we will notify our U.S. shareholders of the relevant tax information within 60 days after the close of the affected taxable year.

As discussed above, for noncorporate U.S. shareholders, long-term capital gains are generally taxed at maximum rates of 15% or 25%, depending upon the type of property disposed of and the previously claimed depreciation with respect to this property. If for any taxable year we designate capital gain dividends for U.S. shareholders, then the portion of the capital gain dividends we designate will be allocated to the holders of a particular class of shares on a percentage basis equal to the ratio of the amount of the total dividends paid or made available for the year to the holders of that class of shares to the total dividends paid or made available for the year to holders of all classes of our shares. We will similarly designate the portion of any capital gain dividend that is to be taxed to noncorporate U.S. shareholders at the maximum rates of 15% or 25% so that the designations will be proportionate among all classes of our shares.

Distributions in excess of current or accumulated earnings and profits will not be taxable to a U.S. shareholder to the extent that they do not exceed the shareholder’s adjusted tax basis in the shareholder’s shares, but will reduce the shareholder’s basis in those shares. To the extent that these excess distributions exceed the adjusted basis of a U.S. shareholder’s shares, they will be included in income as capital gain, with long-term gain generally taxed to noncorporate U.S. shareholders at a maximum rate of 15%. No U.S. shareholder may include on his federal income tax return any of our net operating losses or any of our capital losses.

Dividends that we declare in October, November or December of a taxable year to U.S. shareholders of record on a date in those months will be deemed to have been received by shareholders on December 31 of that

taxable year, provided we actually pay these dividends during the following January. Also, items that are treated differently for regular and alternative minimum tax purposes are to be allocated between a REIT and its shareholders under Treasury regulations which are to be prescribed. It is possible that these Treasury regulations will require tax preference items to be allocated to our shareholders with respect to any accelerated depreciation or other tax preference items that we claim.

A U.S. shareholder will generally recognize gain or loss equal to the difference between the amount realized and the shareholder’s adjusted basis in our shares that are sold or exchanged. This gain or loss will be capital gain or loss, and will be long-term capital gain or loss if the shareholder’s holding period in the shares exceeds one year. In addition, any loss upon a sale or exchange of our shares held for six months or less will generally be treated as a long-term capital loss to the extent of our long-term capital gain dividends during the holding period.

Effective for federal tax returns with due dates after October 22, 2004, the IRC imposes a penalty for the failure to properly disclose a “reportable transaction.” A reportable transaction currently includes, among other things, a sale or exchange of our shares resulting in a tax loss in excess of (i) $10 million in any single year or $20 million in any combination of years in the case of our shares held by a C corporation or by a partnership with only C corporation partners or (ii) $2 million in any single year or $4 million in any combination of years in the case of our shares held by any other partnership or an S corporation, trust or individual, including losses that flow through pass through entities to individuals. A taxpayer discloses a reportable transaction by filing IRS Form 8886 with its federal income tax return and, in the first year of filing, a copy of Form 8886 must be sent to the IRS’s Office of Tax Shelter Analysis. The penalty for failing to disclose a reportable transaction is generally $10,000 in the case of a natural person and $50,000 in any other case.

Noncorporate U.S. shareholders who borrow funds to finance their acquisition of our shares could be limited in the amount of deductions allowed for the interest paid on the indebtedness incurred. Under Section 163(d) of the IRC, interest paid or accrued on indebtedness incurred or continued to purchase or carry property held for investment is generally deductible only to the extent of the investor’s net investment income. A U.S. shareholder’s net investment income will include ordinary income dividend distributions received from us and, if an appropriate election is made by the shareholder, capital gain dividend distributions received from us; however, distributions treated as a nontaxable return of the shareholder’s basis will not enter into the computation of net investment income.

Taxation of Tax-Exempt Shareholders

In Revenue Ruling 66-106, the IRS ruled that amounts distributed by a REIT to a tax-exempt employees’ pension trust did not constitute “unrelated business taxable income,” even though the REIT may have financed some of its activities with acquisition indebtedness. Although revenue rulings are interpretive in nature and subject to revocation or modification by the IRS, based upon the analysis and conclusion of Revenue Ruling 66-106, our distributions made to shareholders that are tax-exempt pension plans, individual retirement accounts, or other qualifying tax-exempt entities should not constitute unrelated business taxable income, provided that the shareholder has not financed its acquisition of our shares with “acquisition indebtedness” within the meaning of the IRC, and provided further that, consistent with our present intent, we do not hold a residual interest in a real estate mortgage investment conduit.

Tax-exempt pension trusts, including so-called 401(k) plans but excluding individual retirement accounts or government pension plans, that own more than 10% by value of a “pension-held REIT” at any time during a taxable year may be required to treat a percentage of all dividends received from the pension-held REIT during the year as unrelated business taxable income. This percentage is equal to the ratio of:

(1) the pension-held REIT’s gross income derived from the conduct of unrelated trades or businesses, determined as if the pension-held REIT were a tax-exempt pension fund, less direct expenses related to that income, to

(2) the pension-held REIT’s gross income from all sources, less direct expenses related to that income,

except that this percentage shall be deemed to be zero unless it would otherwise equal or exceed 5%. A REIT is a pension-held REIT if:

· the REIT is “predominantly held” by tax-exempt pension trusts; and

· the REIT would fail to satisfy the “closely held” ownership requirement discussed above if the stock or beneficial interests in the REIT held by tax-exempt pension trusts were viewed as held by tax-exempt pension trusts rather than by their respective beneficiaries.

A REIT is predominantly held by tax-exempt pension trusts if at least one tax-exempt pension trust owns more than 25% by value of the REIT’s stock or beneficial interests, or if one or more tax-exempt pension trusts, each owning more than 10% by value of the REIT’s stock or beneficial interests, own in the aggregate more than 50% by value of the REIT’s stock or beneficial interests. Because of the share ownership concentration restrictions in our declaration of trust, we believe that we are not and will not be a pension-held REIT. However, because our shares are publicly traded, we cannot completely control whether or not we are or will become a pension-held REIT.

Social clubs, voluntary employee benefit associations, supplemental unemployment benefit trusts and qualified group legal services plans exempt from federal income taxation under Sections 501(c)(7), (c)(9), (c)(17) and (c)(20) of the IRC, respectively, are subject to different unrelated business taxable income rules, which generally will require them to characterize distributions from a REIT as unrelated business taxable income. In addition, these prospective investors should consult their own tax advisors concerning any “set aside” or reserve requirements applicable to them.

Taxation of Non-U.S. Shareholders

The rules governing the United States federal income taxation of non-U.S. shareholders are complex, and the following discussion is intended only as a summary of these rules. If you are a non-U.S. shareholder, we urge you to consult with your own tax advisor to determine the impact of United States federal, state, local, and foreign tax laws, including any tax return filing and other reporting requirements, with respect to your investment in our shares.

In general, a non-U.S. shareholder will be subject to regular United States federal income tax in the same manner as a U.S. shareholder with respect to its investment in our shares if that investment is effectively connected with the non-U.S. shareholder’s conduct of a trade or business in the United States. In addition, a corporate non-U.S. shareholder that receives income that is or is deemed effectively connected with a trade or business in the United States may also be subject to the 30% branch profits tax under Section 884 of the IRC, which is payable in addition to regular United States federal corporate income tax. The balance of this discussion of the United States federal income taxation of non-U.S. shareholders addresses only those non-U.S. shareholders whose investment in our shares is not effectively connected with the conduct of a trade or business in the United States.

A distribution by us to a non-U.S. shareholder that is not attributable to gain from the sale or exchange of a United States real property interest and that is not designated as a capital gain dividend will be treated as an ordinary income dividend to the extent that it is made out of current or accumulated earnings and profits. A distribution of this type will generally be subject to United States federal income tax and withholding at the rate of 30%, or at a lower rate if the non-U.S. shareholder has in the manner prescribed by the IRS demonstrated its entitlement to benefits under a tax treaty. In the case of any in kind distributions of property, we or other applicable withholding agents will collect the amount required to be withheld by reducing to cash for remittance to the IRS a sufficient portion of the property that the non-U.S. shareholder would otherwise receive, and the non-U.S. shareholder may bear brokerage or other costs for this withholding procedure. Because we cannot determine our current and accumulated earnings and profits until the end of the taxable year, withholding at the rate of 30% or applicable lower treaty rate will generally be imposed on the gross amount of any distribution to a non-U.S. shareholder that we make and do not designate a capital gain dividend. Notwithstanding this withholding on distributions in excess of our current and accumulated earnings and profits, these distributions are a nontaxable return of capital to the extent that they do not exceed the non-U.S. shareholder’s adjusted basis in our shares, and the nontaxable return of capital will reduce the adjusted basis in these shares. To the extent that distributions in excess of current and accumulated earnings and profits exceed the non-U.S. shareholder’s adjusted basis in our shares, the distributions will give rise to tax liability if the non-U.S. shareholder would otherwise be subject to tax on any gain from the sale or exchange of these shares, as discussed below. A non-U.S. shareholder may seek a refund from the IRS of amounts withheld on distributions to him in excess of our current and accumulated earnings and profits.

From time to time, some of our distributions may be attributable to the sale or exchange of United States real property interests. However, capital gain dividends that are received by a non-U.S. shareholder, including dividends attributable to our sales of United States real property interests, and that are deductible by us in respect of our 2005 taxable year and thereafter will be subject to the taxation and withholding regime applicable to ordinary income dividends and the branch profits tax will not apply, provided that (1) the capital gain dividends are received with respect to a class of shares that is “regularly traded” on a domestic “established securities market” such as the NYSE both as defined by applicable Treasury regulations, and (2) the non-U.S. shareholder does not own more than 5% of that class of shares at any time during the one-year period ending on the date of distribution of the capital gain dividends. If both of these provisions are satisfied, qualifying non-U.S. shareholders will not be subject to withholding on capital gain dividends as though those amounts were effectively connected with a United States trade or business, and qualifying non-U.S. shareholders will not be required to file United States federal income tax returns or pay branch profits tax in respect of these capital gain dividends. Instead, these dividends will be subject to United States federal income tax and withholding as ordinary dividends, currently at a 30% tax rate unless reduced by applicable treaty, as discussed below. We believe that our shares have been and will remain “regularly traded” on an “established securities market” within the definition of each term provided in applicable Treasury regulations; however, we can provide no assurance that our shares will continue to be “regularly traded” on an “established securities market” in future taxable years.

Except as discussed above, for any year in which we qualify as a REIT, distributions that are attributable to gain from the sale or exchange of a United States real property interest are taxed to a non-U.S. shareholder as if these distributions were gains effectively connected with a trade or business in the United States conducted by the non-U.S. shareholder. Accordingly, a non-U.S. shareholder that does not qualify for the provision above or that received dividends for taxable years before 2005 will be taxed on these amounts at the normal capital gain rates applicable to a U.S. shareholder, subject to any applicable alternative minimum tax and to a special alternative minimum tax in the case of nonresident alien individuals; such a non-U.S. shareholder will be required to file a United States federal income tax return reporting these amounts, even if applicable withholding is imposed as described below; and such a non-U.S. shareholder that is also a corporation may owe the 30% branch profits tax under Section 884 of the IRC in respect of these amounts. We will be required to withhold from distributions to such non-U.S. shareholders, and remit to the IRS, 35% of the maximum amount of any distribution that could be designated as a capital gain dividend. In addition, for purposes of this withholding rule, if we designate prior distributions as capital gain dividends, then subsequent distributions up to the amount of the designated prior distributions will be treated as capital gain dividends. The amount of any tax withheld is creditable against the non-U.S. shareholder’s United States federal income tax liability, and the non-U.S. shareholder may file for a refund from the IRS of any amount of withheld tax in excess of that tax liability.

Effective generally from and after 2006, a special “wash sale” rule applies to a non-U.S. shareholder who owns any class of our shares if (1) the shareholder owns more than 5% of that class of shares at any time during the one-year period ending on the date of the distribution described below, or (2) that class of our shares is not, within the meaning of applicable Treasury Regulations, “regularly traded” on a domestic “established securities market” such as the NYSE. Although there can be no assurance in this regard, we believe that our common shares and each class of our preferred shares has been and will remain “regularly traded” on a domestic “established securities market” within the meaning of applicable Treasury regulations, all as discussed above. We thus anticipate this wash sale rule to apply, if at all, only to a non-U.S. shareholder that owns more than 5% of either our common shares or any class of our preferred shares. Such a non-U.S. shareholder will be treated as having made a “wash sale” of our shares if it (1) disposes of an interest in our shares during the 30 days preceding the ex-dividend date of a distribution by us that, but for such disposition, would have been treated by the non-U.S. shareholder in whole or in part as gain from the sale or exchange of a United States real property interest, and then (2) acquires or enters into a contract to acquire a substantially identical interest in our shares, either actually or constructively through a related party, during the 61-day period beginning 30 days prior to the ex-dividend date. In the event of such a wash sale, the non-U.S. shareholder will have gain from the sale or exchange of a United States real property interest in an amount equal to the portion of the distribution that, but for the wash sale, would have been a gain from the sale or exchange of a United States real property interest. As discussed above, a non-U.S. shareholder’s gain from the sale or exchange of a United States real property interest can trigger increased United States taxes, such as the branch profits tax applicable to non-U.S. corporations, and increased United States tax filing requirements.

If for any taxable year we designate capital gain dividends for our shareholders, then the portion of the capital gain dividends we designate will be allocated to the holders of a particular class of shares on a percentage basis equal to the ratio of the amount of the total dividends paid or made available for the year to the holders of that class of shares to the total dividends paid or made available for the year to holders of all classes of our shares.

Tax treaties may reduce the withholding obligations on our distributions. Under some treaties, however, rates below 30% that are applicable to ordinary income dividends from United States corporations may not apply to ordinary income dividends from a REIT or may apply only if the REIT meets certain additional conditions. You must generally use an applicable IRS Form W-8, or substantially similar form, to claim tax treaty benefits. If the amount of tax withheld by us with respect to a distribution to a non-U.S. shareholder exceeds the shareholder’s United States federal income tax liability with respect to the distribution, the non-U.S. shareholder may file for a refund of the excess from the IRS. The 35% withholding tax rate discussed above on some capital gain dividends corresponds to the maximum income tax rate applicable to corporate non-U.S. shareholders but is higher than the 15% and 25% maximum rates on capital gains generally applicable to noncorporate non-U.S. shareholders. Treasury regulations also provide special rules to determine whether, for purposes of determining the applicability of a tax treaty, our distributions to a non-U.S. shareholder that is an entity should be treated as paid to the entity or to those owning an interest in that entity, and whether the entity or its owners are entitled to benefits under the tax treaty. In the case of any in kind distributions of property, we or other applicable withholding agents will have to collect the amount required to be withhold by reducing to cash for remittance to the IRS a sufficient portion of the property that the non-U.S. shareholder would otherwise receive, and the non-U.S. shareholder may bear brokerage or other costs for this withholding procedure.

If our shares are not “United States real property interests” within the meaning of Section 897 of the IRC, then a non-U.S. shareholder’s gain on sale of these shares generally will not be subject to United States federal income taxation, except that a nonresident alien individual who was in the United States for 183 days or more during the taxable year may be subject to a 30% tax on this gain. Our shares will not constitute a United States real property interest if we are a “domestically controlled REIT.” A domestically controlled REIT is a REIT in which at all times during the preceding five-year period less than 50% in value of its shares is held directly or indirectly by foreign persons. We believe that we have been and will remain a domestically controlled REIT and thus a non-U.S. shareholder’s gain on sale of our shares will not be subject to United States federal income taxation. However, because our shares are publicly traded, we can provide no assurance that we will be a domestically controlled REIT. If we are not a domestically controlled REIT, a non-U.S. shareholder’s gain on sale of our shares will not be subject to United States federal income taxation as a sale of a United States real property interest, if that class of shares is “regularly traded,” as defined by applicable Treasury regulations, on an established securities market like the NYSE, and the non-U.S. shareholder has at all times during the preceding five years owned 5% or less by value of that class of shares. If the gain on the sale of our shares were subject to United States federal income taxation, the non-U.S. shareholder will generally be subject to the same treatment as a U.S. shareholder with respect to its gain, will be required to file a United States federal income tax return reporting that gain, and a corporate non-U.S. shareholder might owe branch profits tax under Section 884 of the IRC. A purchaser of our shares from a non-U.S. shareholder will not be required to withhold on the purchase price if the purchased shares are regularly traded on an established securities market or if we are a domestically controlled REIT. Otherwise, a purchaser of our shares from a non-U.S. shareholder may be required to withhold 10% of the purchase price paid to the non-U.S. shareholder and to remit the withheld amount to the IRS.

Backup Withholding and Information Reporting

Information reporting and backup withholding may apply to distributions or proceeds paid to our shareholders under the circumstances discussed below. The backup withholding rate is currently 28% and is scheduled to increase to 31% after 2010. Amounts withheld under backup withholding are generally not an additional tax and may be refunded by the IRS or credited against the REIT shareholder’s federal income tax liability. In the case of any in kind distributions of property by us to a shareholder, we or other applicable withholding agents will have to collect any applicable backup withholding by reducing to cash for remittance to the IRS a sufficient portion of the property that our shareholder would otherwise receive, and the shareholder may bear brokerage or other costs for this withholding procedure.

A U.S. shareholder will be subject to backup withholding when it receives distributions on our shares or proceeds upon the sale, exchange, redemption, retirement or other disposition of our shares, unless the U.S. shareholder properly executes, or has previously properly executed, under penalties of perjury an IRS Form W-9 or substantially similar form that:

· provides the U.S. shareholder’s correct taxpayer identification number; and

· certifies that the U.S. shareholder is exempt from backup withholding because it is a corporation or comes within another exempt category, it has not been notified by the IRS that it is subject to backup withholding, or it has been notified by the IRS that it is no longer subject to backup withholding.

If the U.S. shareholder has not and does not provide its correct taxpayer identification number on the IRS Form W-9 or substantially similar form, it may be subject to penalties imposed by the IRS, and the REIT or other withholding agent may have to withhold a portion of any distributions paid to it. Unless the U.S. shareholder has established on a properly executed IRS Form W-9 or substantially similar form that it is a corporation or comes within another exempt category, distributions on our shares paid to it during the calendar year, and the amount of tax withheld, if any, will be reported to it and to the IRS.

Distributions on our shares to a non-U.S. shareholder during each calendar year and the amount of tax withheld, if any, will generally be reported to the non-U.S. shareholder and to the IRS. This information reporting requirement applies regardless of whether the non-U.S. shareholder is subject to withholding on distributions on our shares or whether the withholding was reduced or eliminated by an applicable tax treaty. Also, distributions paid to a non-U.S. shareholder on our shares may be subject to backup withholding, unless the non-U.S. shareholder properly certifies its non-U.S. shareholder status on an IRS Form W-8 or substantially similar form in the manner described above. Similarly, information reporting and backup withholding will not apply to proceeds a non-U.S. shareholder receives upon the sale, exchange, redemption, retirement or other disposition of our shares, if the non-U.S. shareholder properly certifies its non-U.S. shareholder status on an IRS Form W-8 or substantially similar form. Even without having executed an IRS Form W-8 or substantially similar form, however, in some cases information reporting and backup withholding will not apply to proceeds that a non-U.S. shareholder receives upon the sale, exchange, redemption, retirement or other disposition of our shares if the non-U.S. shareholder receives those proceeds through a broker’s foreign office.

Other Tax Consequences

Our tax treatment and that of our shareholders may be modified by legislative, judicial, or administrative actions at any time, which actions may be retroactive in effect. The rules dealing with federal income taxation are constantly under review by the Congress, the IRS and the Treasury Department, and statutory changes, new regulations, revisions to existing regulations, and revised interpretations of established concepts are issued frequently. Likewise, the rules regarding taxes other than federal income taxes may also be modified. No prediction can be made as to the likelihood of passage of new tax legislation or other provisions or the direct or indirect effect on us and our shareholders. Revisions to tax laws and interpretations of these laws could adversely affect the tax or other consequences of an investment in our shares. We and our shareholders may also be subject to taxation by state, local or other jurisdictions, including those in which we or our shareholders transact business or reside. These tax consequences may not be comparable to the federal income tax consequences discussed above.

ERISA PLANS, KEOGH PLANS AND INDIVIDUAL RETIREMENT ACCOUNTS

General Fiduciary Obligations

Fiduciaries of a pension, profit-sharing or other employee benefit plan subject to Title I of the Employee Retirement Income Security Act of 1974, as amended, or ERISA, must consider whether:

· their investment in our shares satisfies the diversification requirements of ERISA;

· the investment is prudent in light of possible limitations on the marketability of our shares;

· they have authority to acquire our shares under the applicable governing instrument and Title I of ERISA; and

· the investment is otherwise consistent with their fiduciary responsibilities.

Trustees and other fiduciaries of an ERISA plan may incur personal liability for any loss suffered by the plan on account of a violation of their fiduciary responsibilities. In addition, these fiduciaries may be subject to a civil penalty of up to 20% of any amount recovered by the plan on account of a violation. Fiduciaries of any IRA, Roth IRA, Keogh Plan or other qualified retirement plan not subject to Title I of ERISA, referred to as “non-ERISA plans,” should consider that a plan may only make investments that are authorized by the appropriate governing instrument.

Fiduciaries considering an investment in our securities should consult their own legal advisors if they have any concern as to whether the investment is consistent with the foregoing criteria or is otherwise appropriate. The sale of our securities to a plan is in no respect a representation by us or any underwriter of the securities that the investment meets all relevant legal requirements with respect to investments by plans generally or any particular plan, or that the investment is appropriate for plans generally or any particular plan.

Prohibited Transactions

Fiduciaries of ERISA plans and persons making the investment decision for an IRA or other non-ERISA plan should consider the application of the prohibited transaction provisions of ERISA and the IRC in making their investment decision. Sales and other transactions between an ERISA or non-ERISA plan, and persons related to it, are prohibited transactions. The particular facts concerning the sponsorship, operations and other investments of an ERISA plan or non-ERISA plan may cause a wide range of other persons to be treated as disqualified persons or parties in interest with respect to it. A prohibited transaction, in addition to imposing potential personal liability upon fiduciaries of ERISA plans, may also result in the imposition of an excise tax under the IRC or a penalty under ERISA upon the disqualified person or party in interest with respect to the plan. If the disqualified person who engages in the transaction is the individual on behalf of whom an IRA or Roth IRA is maintained or his beneficiary, the IRA or Roth IRA may lose its tax-exempt status and its assets may be deemed to have been distributed to the individual in a taxable distribution on account of the prohibited transaction, but no excise tax will be imposed. Fiduciaries considering an investment in our securities should consult their own legal advisors as to whether the ownership of our securities involves a prohibited transaction.

“Plan Assets” Considerations

The Department of Labor, which has administrative responsibility over ERISA plans as well as non-ERISA plans, has issued a regulation defining “plan assets.” The regulation generally provides that when an ERISA or non-ERISA plan acquires a security that is an equity interest in an entity and that security is neither a “publicly offered security” nor a security issued by an investment company registered under the Investment Company Act of 1940, as amended, the ERISA plan’s or non-ERISA plan’s assets include both the equity interest and an undivided interest in each of the underlying assets of the entity, unless it is established either that the entity is an operating company or that equity participation in the entity by benefit plan investors is not significant.

Each class of our shares (that is, our common shares and any class of preferred shares that we may issue) must be analyzed separately to ascertain whether it is a publicly offered security. The regulation defines a publicly offered security as a security that is “widely held,” “freely transferable” and either part of a class of securities registered under the Exchange Act, or sold under an effective registration statement under the Securities Act of 1933, as amended, provided the securities are registered under the Exchange Act within 120 days after the end of the fiscal year of the issuer during which the offering occurred. Each class of our outstanding shares has been registered under the Exchange Act.

The regulation provides that a security is “widely held” only if it is part of a class of securities that is owned by 100 or more investors independent of the issuer and of one another. However, a security will not fail to be “widely held” because the number of independent investors falls below 100 subsequent to the initial public offering as a result of events beyond the issuer’s control. Our common shares have been widely held and we expect our common shares to continue to be widely held. We expect the same to be true of any class of preferred stock that we may issue, but we can give no assurance in that regard.

The regulation provides that whether a security is “freely transferable” is a factual question to be determined on the basis of all relevant facts and circumstances. The regulation further provides that, where a security is part of an offering in which the minimum investment is $10,000 or less, some restrictions on transfer ordinarily will not, alone or in combination, affect a finding that these securities are freely transferable. The restrictions on transfer enumerated in the regulation as not affecting that finding include:

· any restriction on or prohibition against any transfer or assignment which would result in a termination or reclassification for federal or state tax purposes, or would otherwise violate any state or federal law or court order;

· any requirement that advance notice of a transfer or assignment be given to the issuer and any requirement that either the transferor or transferee, or both, execute documentation setting forth representations as to compliance with any restrictions on transfer which are among those enumerated in the regulation as not affecting free transferability, including those described in the preceding clause of this sentence;

· any administrative procedure which establishes an effective date, or an event prior to which a transfer or assignment will not be effective; and

· any limitation or restriction on transfer or assignment that is not imposed by the issuer or a person acting on behalf of the issuer.

We believe that the restrictions imposed under our declaration of trust on the transfer of shares do not result in the failure of our shares to be “freely transferable.” Furthermore, we believe that there exist no other facts or circumstances limiting the transferability of our shares which are not included among those enumerated as not affecting their free transferability under the regulation, and we do not expect or intend to impose in the future, or to permit any person to impose on our behalf, any limitations or restrictions on transfer which would not be among the enumerated permissible limitations or restrictions.

Assuming that each class of our shares will be “widely held” and that no other facts and circumstances exist which restrict transferability of these shares, we have received an opinion of our counsel, Sullivan & Worcester LLP, that our shares will not fail to be “freely transferable” for purposes of the regulation due to the restrictions on transfer of the shares under our declaration of trust and that under the regulation each class of our currently outstanding shares is publicly offered and our assets will not be deemed to be “plan assets” of any ERISA plan or non-ERISA plan that invests in our shares.

Item 1A. Risk Factors

Our business faces many risks. The risks described below may not be the only risks we face. Additional risks that we do not yet know of, or that we currently think are immaterial, may also impair our business operations or financial results. If any of the events or circumstances described in the following risks actually occurs, our business, financial condition or results of operations could suffer and the trading price of our debt or equity securities could decline. Investors and prospective investors should consider the following risks and the information contained under the heading “Warning Concerning Forward Looking Statements” before deciding whether to invest in our securities.

Financial and other difficulties at Five Star could adversely affect us.

As of December 31, 2007, Five Star pays approximately 68% of our total rents and operates approximately 69% of our assets, at cost. Five Star has not been consistently profitable since it became a public company in 2001. Although it was profitable for the first half of 2005, Five Star experienced a significant loss for the second half of 2005 and full year 2006 as a result of termination fees it paid to Sunrise in connection with Five Star’s termination of 30 management agreements with Sunrise. Also, while Five Star has access to a $40.0 million working capital line of credit from a financial institution, Five Star has limited resources and has substantial lease obligations to us and others. Five Star’s business is subject to a number of risks, including the following:

· Five Star has high operating leverage. A small percentage decline in Five Star’s revenue or increase in Five Star’s expenses could have a material negative impact on Five Star’s operating results.

· Five Star’s growth strategy, including recent acquisitions, may not succeed and may result in reduced profits or recurring losses.

· Increases in liability insurance costs have in the past negatively impacted Five Star’s operating results and may adversely impact its future results.

· Increases in labor costs could have a material adverse effect on Five Star.

· Extensive regulation applicable to Five Star’s business increases Five Star’s costs and may result in losses.

· Medicare and Medicaid payments account for some of Five Star’s total revenues. A reduction in these rates or a failure of these rates to match Five Star’s cost increases may materially adversely affect Five Star.

· Current general economic conditions may adversely affect Five Star’s operations. For example, tight credit market conditions may make it more expensive for Five Star to access the working capital it requires for its operations. Similarly, the current slowing of the housing market may make it more difficult for potential residents of our properties operated by Five Star to sell their homes.

If Five Star’s operations are unprofitable, Five Star might default its rent obligations to us.

Five Star may not be able to operate the two rehabilitation hospitals we own profitably.

Effective October 1, 2006, we leased two rehabilitation hospitals to Five Star that were formerly operated by HealthSouth. The historical operating and financial information concerning the two hospitals that we received from HealthSouth may not be accurate. In addition, the two rehabilitation hospitals may be subject to retroactive rate adjustments. As a result, Five Star may be unable to operate these hospitals profitably and they may continue to experience losses from their operation of these hospitals. A significant amount of the revenues at these rehabilitation hospitals is paid by Medicare and Five Star became more dependent upon revenues from the Medicare program when they began to operate these hospitals. For cost reporting periods starting on or after July 1, 2006, 60% of a facility’s total impatient population must require intensive rehabilitation services associated with treatment of at least one of 13 designated medical conditions. If the hospitals’ operations do not remain in compliance with this 60% rule, these facilities may be subject to Medicare reclassification as a different type of provider and would receive lower Medicare reimbursement rates. Under these circumstances, Five Star may not be able to profitably operate these hospitals. Losses at these hospitals could jeopardize Five Star’s ability to pay rent to us.

Sunrise’s operation of our properties may adversely affect us.

In March 2003, Marriott sold its subsidiary, MSLS, to Sunrise. Sunrise’s annual rent to us for the 14 properties it leases is $31.7 million, or 16% of our total annualized current rents; this rent is guaranteed by Marriott. Sunrise has not filed its Annual Report on Form 10-K for the years ended 2006 and 2005 with the SEC, and has not filed its Quarterly Reports on Form 10-Q for 2007 and 2006. It is uncertain when these financial statements will be filed or what impact the restatement will have on Sunrise’s operations. If Sunrise is unable to successfully operate the communities it leases from us, Sunrise may become unable to pay rent due to us.

The operations of some of our facilities are dependent upon payments from the Medicare and Medicaid programs.

Fifteen percent (15%) of our annual rents come from properties where a majority of the operating revenues are received from the Medicare and Medicaid programs. Even at properties where less than a majority of the

revenues comes from Medicare or Medicaid payments, a reduction in such payments can materially adversely impact profits or result in losses by our tenants. The federal government and some states are now experiencing or have recently experienced fiscal deficits and other budget pressures. Historically when governmental deficits or budget pressures have increased, cutbacks in Medicare and Medicaid funding have followed. These cutbacks sometimes include rate reductions, but more often result in a failure of Medicare and Medicaid rates to increase by sufficient amounts to offset increasing costs. Pursuant to the SCHIP Extension Act, effective April 1, 2008, the Medicare rate increase for rehabilitation hospitals reimbursed as IRFs has been set at zero for FY 2008 and 2009. If and to the extent Medicare or Medicaid rates are reduced from current levels or if rate increases are less than increases in our tenants’ operating costs, it could have a material adverse effect on the ability of some of our tenants, including Five Star, to pay rent to us.

Our tenants are faced with significant potential litigation and rising insurance costs that not only affect their ability to obtain and maintain adequate liability and other insurance, but also may affect their ability to pay their lease payments and fulfill their insurance and indemnification obligations to us.

In some states, advocacy groups have been created to monitor the quality of care at skilled nursing facilities and assisted and independent living facilities, and these groups have brought litigation against operators. Also, in several instances, private litigations by skilled nursing facility patients, assisted and independent living facility residents or their families have succeeded in winning very large damage awards for alleged abuses. The effect of this litigation and potential litigation has been to materially increase the costs of monitoring and reporting quality of care compliance incurred by our tenants. In addition, the cost of liability and medical malpractice insurance has increased and may continue to increase so long as the present litigation environment continues. This has affected the ability of some of our tenants to obtain and maintain adequate liability and other insurance and manage their related risk exposures. In addition to being unable to fulfill their insurance, indemnification and other obligations to us under their leases and thereby potentially exposing us to those risks, these litigation risks and costs could cause some of our tenants to become unable to pay rents due to us.

Our properties and their operations are subject to complex regulations.

Physical characteristics of senior housing properties and hospitals are mandated by various governmental authorities. Changes in these regulations may require significant expenditures. Our leases generally require our tenants to maintain our properties in compliance with applicable laws and we try to monitor their compliance. However, if our tenants suffer financial distress, maintenance of our properties may be neglected. Under some of our leases, we have agreed to fund capital expenditures in return for rent increases. Our available financial resources or those of our tenants may be insufficient to fund expenditures required to keep our properties operating in accordance with regulations, and if we fund these expenditures, our tenants’ financial resources may be insufficient to meet increased rental obligations to us.

Licensing, Medicare and Medicaid laws also require our tenants who operate senior living communities and hospitals to comply with extensive standards governing operations. There are also various laws prohibiting fraud by senior living operators and hospitals, including criminal laws that prohibit false claims for Medicare and Medicaid and that regulate patient referrals. In recent years, the federal and state governments have devoted increasing resources to monitoring the quality of care at senior living communities and to anti-fraud investigations in healthcare. When quality of care deficiencies are identified or improper billing is uncovered, various sanctions may be imposed, including denial of new admissions, exclusion from Medicare or Medicaid program participation, monetary penalties, governmental oversight or loss of licensure. Our tenants receive notices of potential sanctions and remedies from time to time, and such sanctions are imposed from time to time on our facilities which they operate. If our tenants are unable to cure deficiencies which have been identified or which are identified in the future, these sanctions may be imposed, and if imposed, may adversely affect our tenants’ ability to pay rents to us and our ability to identify substitute tenants.

We may be unable to access the capital necessary to repay debts or to grow.

To retain our status as a REIT, we are required to distribute 90% of our taxable income to shareholders and we generally cannot retain sufficient income from operations to repay debts, to invest in our properties or fund our acquisitions. Accordingly, our business and growth strategies depend, in part, upon our ability to raise additional

capital at reasonable costs to repay our debts and to fund new investments. We believe we will be able to raise additional debt and equity capital at reasonable costs to refinance our debts at or prior to their maturities, to maintain our properties and to invest at yields that exceed our cost of capital. However, at present there seems to be a significant contraction in financial liquidity globally. In these circumstances, our ability to raise reasonably priced capital is not guaranteed; we may be unable to raise reasonably priced capital because of reasons related to our business or for reasons beyond our control, such as market conditions. Our business and growth strategy is not assured and may fail.

An increase in interest rates would increase our interest costs on variable rate debt and could adversely impact our ability to refinance existing debt or sell assets. Also, interest rate changes often affect the value of dividend paying securities.

Our revolving credit facility bears interest at variable rates. At February 28, 2008, we had no amounts outstanding and $550.0 million was available for drawing under our revolving credit facility. If we have variable rate debt outstanding when interest rates increase, our interest costs will increase and adversely affect our cash flow and our ability to pay principal and interest on our debt and our ability to make distributions to our shareholders. Further, rising interest rates may raise the cost of our capital used to refinance existing debt when it matures. In addition, an increase in interest rates may decrease the amount third parties are willing to pay for our assets, thereby limiting our ability to sell properties. Also, increases in interest rates generally reduce the value of dividend paying securities; accordingly, if interest rates rise, the market value of our common shares may decline.

Acquisitions that we make may not be successful.

Our business strategy contemplates acquisitions of additional senior housing properties. We cannot assure our investors that acquisitions we make will prove to be successful. We might encounter unanticipated difficulties and expenditures relating to any acquired properties. Newly acquired properties might require significant management attention that would otherwise be devoted to our ongoing business. We might never realize the anticipated benefits of certain acquisitions.

Competition may adversely affect some of our facilities.

During the 1990s, a large number of new assisted living properties were developed. In most states these properties are subject to less stringent regulations than nursing homes and can operate with comparatively fewer personnel and at comparatively lower costs. As a result of offering newer accommodations at equal or lower costs, these assisted living properties and other senior living alternatives, including home healthcare, often attract persons who would have previously become nursing home residents. Many of the residents attracted to new assisted living properties were the most profitable nursing home patients, since they paid higher rates than Medicaid or Medicare would pay and they required lesser amounts of care. Historically, nursing homes have been somewhat protected from competition by state requirements of obtaining certificates of need to develop new properties; however, these barriers are being eliminated in many states. Also, there are few regulatory barriers to competition for home healthcare or for independent and assisted living services. These competitive factors have caused some nursing homes which we own to decline in value. This decline may continue as assisted living facilities or other elderly care alternatives such as home healthcare expand their businesses. Similar risks face each of our tenants. These competition risks may prevent our tenants and operators from maintaining or improving occupancy at our properties, which may increase the risk of default under our leases.

Increasing investor interest in healthcare related real estate may increase competition and reduce our growth.

Our business is highly competitive and we expect that it may become more competitive in the future. We compete with a number of healthcare REITs, private equity funds and other financing sources, some of which are larger and have a lower cost of capital than we do. Recently, there has been increasing interest from newly created REITs and other investors in senior housing and long term care real estate, and the potential for consolidation at the REIT or operator level appears to have increased. These developments could result in fewer investment

opportunities for us and lower spreads over our cost of our capital, either or both of which would limit our ability to grow our business.

Our business dealings with our managing trustees and affiliated entities may create conflicts of interest.

We have no employees. Personnel and other services which we require are provided to us under contracts by our manager, RMR. RMR is beneficially owned by our managing trustees, Barry Portnoy and Adam Portnoy. Barry Portnoy is Chairman, and Adam Portnoy is President, Chief Executive Officer and a director of RMR. In addition, David J. Hegarty, our President, Chief Operating Officer and Secretary, and Richard A. Doyle, our Treasurer and Chief Financial Officer, are executive officers of RMR. We pay RMR a fee based in part upon the historical cost of our investments plus incentive fees based on increases in funds from operations, as defined. Any incentive fees are payable through our issuance of restricted common shares. Our total fees paid to RMR in 2007 were $10.5 million. Although we do not believe it has done so, our fee arrangement with RMR could encourage RMR to advocate acquisitions and discourage sales by us. RMR also acts as the manager for two other publicly owned REITs: HRPT Properties Trust, or HRPT, which primarily owns office buildings; and, Hospitality Properties Trust, or HPT, which owns hotels and travel centers. RMR also provides management services to one of our tenants, Five Star, and other public and private companies. These multiple responsibilities to public companies and other businesses could create competition among these companies for the time and efforts of RMR and Messrs. Barry Portnoy and Adam Portnoy. A termination of our contract with RMR is a default under our revolving credit facility unless approved by a majority of our lenders. We believe that the quality and depth of management available to us by contracting with RMR could not be duplicated by our being a self managed company or by our contracting with unrelated third parties, without considerable cost increases. We believe our contractual arrangements with our managing trustees and RMR are commercially reasonable. All of our contractual arrangements with RMR have been approved by our independent trustees.

Our business dealings with Five Star may create conflicts of interest.

Five Star was originally organized as our subsidiary. We distributed substantially all our Five Star ownership to our shareholders on December 31, 2001. One of our managing trustees, Mr. Barry Portnoy, serves as a managing director of Five Star. As of December 31, 2007, our leases with Five Star accounted for 68% of our annual rents. In the future, we expect to do additional business with Five Star. We believe that our current leases and other business dealings with Five Star were entered on commercially reasonable terms and that our historical, continuing and increasing business dealings with Five Star has been beneficial to both us and Five Star. However, because of the historical and continuing relationships which we have with Five Star, these historical, continuing and expanding business dealings may not be on the same or as favorable terms as we might achieve with a third party with whom we do not have such relationships. All of our transactions with Five Star have been approved by our independent trustees.

Ownership limitations and anti-takeover provisions in our declaration of trust, bylaws and rights plan and under Maryland law may prevent our shareholders from receiving a takeover premium.

Our declaration of trust prohibits any shareholder other than RMR and their affiliates from owning more than 9.8% of our outstanding shares. This provision of the declaration of trust may help us comply with REIT tax requirements. However, this provision will also inhibit a change of control. Our declaration of trust and bylaws contain other provisions that may increase the difficulty of acquiring control of us by means of a tender offer, open market purchases, a proxy fight or otherwise, if the acquisition is not approved by our board of trustees. These other anti-takeover provisions include the following:

· a staggered board of trustees with three separate classes;

· the two-thirds majority shareholder vote required for removal of trustees;

· the ability of our board of trustees to increase, without shareholder approval, the amount of shares (including common shares) that we are authorized to issue under our declaration of trust and bylaws, and to issue additional shares on terms that it determines;

· advance notice procedures with respect to nominations of trustees and shareholder proposals; and

· the fact that only the board of trustees may call shareholder meetings and that shareholders are not entitled to act without a meeting.

We maintain a rights agreement whereby, in the event a person or group of persons acquires or attempts to acquire 10% or more of our outstanding common shares, our shareholders, other than such person or group, will be entitled to purchase additional shares or other securities or property at a discount. In addition, certain provisions of Maryland law may have an anti-takeover effect. For all of these reasons, our shareholders may be unable to realize a change of control premium for shares they own.

The loss of our tax status as a REIT or tax authority challenges would have significant adverse consequences to us and reduce the market price of our common shares.

As a REIT, we generally do not pay federal and state income taxes. However, our continued qualification as a REIT is dependent upon our compliance with complex provisions of the IRC, for which there are available only limited judicial or administrative interpretations. We believe we have operated and are operating as a REIT in compliance with the IRC. However, we cannot assure that, upon review or audit, the IRS will agree with this conclusion. If we cease to be a REIT, we would violate a covenant in our revolving credit facility, our ability to raise capital could be adversely affected, we may be subject to material amounts of federal and state income taxes and the value of our shares would likely decline.

Real estate ownership creates risks and liabilities.

Our business is subject to risks associated with real estate acquisitions and ownership, including:

· property and casualty losses, some of which may be uninsured;

· defaults and bankruptcies by our tenants;

· the illiquid nature of real estate markets which impairs our ability to purchase or sell our assets rapidly to respond to changing economic conditions;

· leases which are not renewed at expiration or for property which is relet at lower rents;

· costs that may be incurred relating to maintenance and repair, and the need to make expenditures due to changes in governmental regulations, including the Americans with Disabilities Act; and

· environmental hazards at our properties for which we may be liable, including those created by prior owners or occupants, existing tenants, abutters or other persons.

There is no assurance that we will make distributions in the future.

We intend to continue to pay quarterly distributions to our shareholders consistent with our historical practice. However, our ability to pay distributions will be adversely affected if any of the risks described herein occur. Our payment of distributions is subject to compliance with restrictions contained in our revolving credit facility and our note indenture. All distributions are made at the discretion of our board of trustees and our future distributions will depend upon our earnings, cash available for distribution, our financial condition, maintenance of our REIT tax status and such other factors as our board of trustees may deem relevant from time to time. In the future, our distribution rate may decline or we may cease making distributions. Also, our distributions in the past have included, and may in the future include, a return of capital.

We may have substantial debt obligations and may incur additional debt.

At February 28, 2008, we have $426.8 million in debt outstanding, which was approximately 25.5% of our total book capitalization. Our note indenture and revolving credit facility permit us and our subsidiaries to incur additional debt, including secured debt. If we default in paying any of our debts or honoring our debt covenants,

these debts may be accelerated and we could be forced to liquidate our assets for less than the values we would receive in a more orderly process.

Any notes we may issue will be effectively subordinated to the debts of our subsidiaries and to our secured debt.

We conduct substantially all of our business through, and all of our properties are owned by, subsidiaries. Consequently, our ability to pay debt service on our outstanding notes and any notes we issue in the future will be dependent upon the cash flow of our subsidiaries and payments by those subsidiaries to us as dividends or otherwise. Our subsidiaries are separate legal entities and may have their own liabilities. Payments due on our outstanding notes, and any notes we may issue, are, or will be, effectively subordinated to liabilities of our subsidiaries, including guaranty liabilities. Substantially all of our subsidiaries have guaranteed our revolving credit facility; none of our subsidiaries guarantee our outstanding notes. In addition, at February 28, 2008, our subsidiaries have approximately $105.0 million of secured debt. Our outstanding notes are, and any notes we may issue will be, also effectively subordinated to our secured debt.

We may be required to prepay our debts upon a change of control.

In certain change of control circumstances, our current and future noteholders and some of our other lenders may have the right to require us to purchase our notes which they own at their principal amount plus accrued interest and a premium.

Our notes may be redeemed before maturity, and our noteholders may be unable to reinvest proceeds at the same or a higher rate.

We may redeem all or a portion of our outstanding notes or notes we may issue in the future after a certain amount of time. Generally, the redemption price will equal the principal amount being redeemed, plus accrued interest to the redemption date, plus a premium. If a redemption occurs, our noteholders may be unable to reinvest the money they receive in the redemption at a rate that is equal to or higher than the rate of return on the redeemed notes.

There may be no public market for notes we may issue and one may not develop.

Generally, any notes we may issue will be a new issue for which no trading market currently exists. We do not intend to list our notes on any securities exchange or to seek approval for quotation through any automated quotation system. We can provide no assurance that an active trading market for any of our notes will exist in the future. Even if a market does develop, the liquidity of the trading market for any of our notes and the market price quoted for any such notes may be adversely affected by changes in the overall market for fixed income securities, by changes in our financial performance or prospects, or by changes in the prospects for REITs or for the senior living industry generally.

Item 1B. Unresolved Staff Comments

None.

Item 2. Properties

At December 31, 2007, we had real estate investments totaling $1.9 billion, at cost after impairment write-downs, in 202 properties. At December 31, 2007, 26 properties with an aggregate cost of $206.7 million were mortgaged or subject to capital lease obligations totaling $105.0 million.

The following table summarizes some information about our properties as of December 31, 2007. All dollar amounts are in thousands.

Location of Properties by State	Number of Properties	Number of Living Units/Beds	Undepreciated Carrying Value		Net Book Value

Alabama	3	134	$	13,879	$	12,788
Arizona	8	1,403	99,716		81,225
California	10	1,647	138,889		112,372
Colorado	8	870	38,027		26,934
Delaware	5	875	62,374		53,148
Florida	14	3,481	284,831		229,590
Georgia	14	968	87,472		80,535
Illinois	2	474	43,946		32,710
Indiana	2	263	24,056		20,652
Iowa	7	495	14,698		10,291
Kansas	3	402	34,735		29,735
Kentucky	9	957	89,482		77,999
Maryland	8	953	123,462		105,859
Massachusetts	3	489	71,596		54,300
Michigan	5	270	16,836		14,763
Minnesota	2	92	7,014		6,059
Mississippi	2	110	12,783		12,431
Missouri	2	180	5,170		3,571
Nebraska	15	888	27,631		22,936
New Jersey	6	925	88,015		75,797
New Mexico	4	209	59,860		55,758
North Carolina	2	197	13,799		12,069
Ohio	2	516	38,456		32,362
Pennsylvania	15	1,342	125,644		107,190
South Carolina	11	607	43,908		40,098
South Dakota	3	361	7,589		4,589
Tennessee	10	582	44,669		41,205
Texas	6	1,685	164,856		139,302
Virginia	12	1,571	118,713		95,275
Washington	1	103	5,193		3,119
Wisconsin	6	723	25,033		16,801
Wyoming	2	209	8,015		4,993
Total	202	23,981	$	1,940,347	$	1,616,456

Item 3. Legal Proceedings

None.

Item 4. Submission of Matters to a Vote of Security Holders

None.

PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Our common shares are traded on the NYSE (symbol: SNH). The following table sets forth for the periods indicated the high and low sale prices for our common shares as reported by the NYSE.

2006	High		Low
First Quarter	$	19.08	$	16.75
Second Quarter	18.18		16.56
Third Quarter	21.98		17.61
Fourth Quarter	24.60		20.50

2007
First Quarter	$	26.83	$	21.75
Second Quarter	24.83		20.10
Third Quarter	22.85		16.22
Fourth Quarter	24.66		19.20

The closing price of our common shares on the NYSE on February 28, 2008 was $21.49.

As of February 28, 2008, there were 2,675 shareholders of record, and we estimate that as of such date there were in excess of 57,700 beneficial owners of our common shares.

Information about distributions declared to common shareholders is summarized in the table below. Common share distributions to our shareholders are generally paid in the quarter following the quarter to which they relate.

	Distributions Per Common Share
	2007		2006

First Quarter	$	0.34	$	0.32
Second Quarter	0.34		0.33
Third Quarter	0.35		0.33
Fourth Quarter	0.35		0.34

All common share distributions shown in the table above have been paid. We currently intend to continue to declare and pay common share distributions on a quarterly basis. However, distributions are made at the discretion of our board of trustees and depend on our earnings, cash available for distribution, financial condition, capital market conditions, growth prospects and other factors which our board of trustees deems relevant.

We issued unregistered shares during the fourth quarter on December 10, 2007, pursuant to our incentive share award plans, to certain employees of our manager, RMR, totaling 3,600 common shares of beneficial interest, par value $0.01 per share, valued at $24.12 per share, the closing price of our common shares on the NYSE on that day. All of these grants were made pursuant to an exemption from registration contained in section 4(2) of the Securities Act.

Item 6. Selected Financial Data

The following table sets forth selected financial data for the periods and dates indicated. Comparative results are affected by property acquisitions and dispositions during the periods shown. This data should be read in conjunction with, and is qualified in its entirety by reference to, management’s discussion and analysis of financial condition and results of operations and the consolidated financial statements and accompanying notes included in this Annual Report on Form 10-K. Amounts are in thousands, except per share information.

Income Statement Data:	2007		2006		2005		2004		2003
Total revenues(1)	$	188,022	$	179,806	$	163,187	$	148,523	$	131,148
Income before (loss) gain on sale of properties(2)	85,303		66,122		57,981		55,523		47,034
Net income(2) (3)	85,303		66,101		63,912		56,742		45,874
Common distributions declared(4)	117,215		96,782		88,783		81,589		72,477

Weighted average shares outstanding	83,168		72,529		68,757		63,406		58,445

Per Common Share Data:
Income before (loss) gain on sale of properties(2)	$	1.03	$	0.91	$	0.84	$	0.88	$	0.80
Net income(2) (3)	1.03		0.91		0.93		0.89		0.78
Cash distributions declared to common shareholders	1.38		1.32		1.28		1.26		1.24

Balance Sheet Data:	2007		2006		2005		2004		2003
Real estate properties, at cost, net of impairment losses	$	1,940,347	$	1,814,358	$	1,686,169	$	1,600,952	$	1,418,241
Total assets	1,701,894		1,584,897		1,500,641		1,447,730		1,304,100
Total indebtedness	426,852		545,085		556,320		535,178		554,823
Total shareholders’ equity	1,249,410		1,019,466		923,184		890,667		727,906

(1) Rental income for the year ended December 31, 2006 includes $14.8 million of rental income from two hospitals formerly leased and operated by HealthSouth. Beginning in 2003 until November 2006, we were involved in litigation with HealthSouth seeking to increase the rent due under a lease of two hospitals to HealthSouth and to terminate the lease and repossess the hospitals. On November 8, 2006, we and HealthSouth agreed to settle our litigation, to recognize HealthSouth’s lease until September 30, 2006 and to increase the annual rent due under the lease from $8.7 million to $9.9 million for the period from January 2, 2002 to September 30, 2006. As a result of the settlement, HealthSouth paid us additional rent of $5.7 million, or $0.08 per share, for periods through September 30, 2006, which we recognized as rental income in the fourth quarter of 2006. On October 1, 2006, Five Star assumed the operations of these two hospitals and began leasing them from us for an annual rent of $10.25 million.

(2) Includes an impairment of assets charge of $1.4 million ($0.02 per share) and loss on early extinguishment of debt of $2.0 million ($0.02 per share) in 2007. Includes an impairment of assets charge of $1.4 million ($0.02 per share) and loss on early extinguishment of debt of $6.5 million ($0.09 per share) in 2006. Includes an impairment of assets charge of $1.8 million ($0.03 per share) in 2005.

(3) Includes a gain on sale of properties of $5.9 million ($0.09 per share) and $1.2 million ($0.01 per share) in 2005 and 2004, respectively. Includes a loss on sale of properties of $1.2 million ($0.02 per share) in 2003.

(4) On January 9, 2008, we declared a distribution of $0.35 per share, or $31.0 million, to be paid to common shareholders of record on January 22, 2008, with respect to our results for the quarter ended December 31, 2007. This distribution was paid on February 15, 2008.

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following information should be read in conjunction with the consolidated financial statements and accompanying notes included in this Annual Report on Form 10-K.

PORTFOLIO OVERVIEW

(Dollars in thousands)

(As of December 31, 2007)	# of Properties	# of Units/Beds	Investment: Carrying Value Before Depreciation		% of Investment		Annualized Current Rent		% of Annualized Current Rent
Facility Type
Independent living communities (1)	41	11,213	$	1,025,051	52.8	%	$	101,668	52.4	%
Assisted living facilities	95	6,535	564,472		29.1	%	56,154		29.0	%
Skilled nursing facilities	58	5,869	222,955		11.5	%	19,000		9.8	%
Rehabilitation hospitals	2	364	47,897		2.5	%	10,598		5.5	%
Wellness centers (2)	6	—	79,972		4.1	%	6,519		3.3	%
Total	202	23,981	$	1,940,347	100.0	%	$	193,939	100.0	%

Tenant/Operator
Five Star (Lease No. 1)	114	9,344	$	622,200	32.1	%	$	52,868	27.3	%
Five Star (Lease No. 2) (3)	30	7,275	667,256		34.4	%	67,917		35.0	%
Five Star rehabilitation hospitals (4)	2	364	47,897		2.5	%	10,598		5.5	%
Sunrise/Marriott (5)	14	4,091	325,165		16.8	%	31,727		16.4	%
NewSeasons/IBC (6)	10	873	87,641		4.5	%	9,298		4.8	%
Alterra/Brookdale (7)	18	894	61,122		3.2	%	7,873		4.1	%
6 private companies (combined)	8	1,140	49,094		2.4	%	7,139		3.6	%
Starmark (2)	6	—	79,972		4.1	%	6,519		3.3	%
Total	202	23,981	$	1,940,347	100.0	%	$	193,939	100.0	%

							Percentage of Operating Revenue Sources
	Rent Coverage		Occupancy				Private Pay				Medicare				Medicaid
Tenant Operating Statistics(8)	2007	2006	2007		2006		2007		2006		2007		2006		2007		2006
Five Star (Lease No. 1) (9)	1.6x	1.5x	90	%	89	%	54	%	50	%	18	%	16	%	30	%	34	%
Five Star (Lease No. 2) (3)	1.7x	1.5x	92	%	93	%	80	%	81	%	17	%	15	%	3	%	4	%
Five Star rehabilitation hospitals(4)	1.1x	NA	60	%	NA		32	%	NA		63	%	NA		5	%	NA
Sunrise/Marriott (5)	NA	NA	NA		NA		NA		NA		NA		NA		NA		NA
NewSeasons/IBC (6)	0.8x	1.2x	82	%	85	%	100	%	100	%	—		—		—		—
Alterra/Brookdale (7)	2.1x	2.1x	91	%	88	%	98	%	98	%	—		—		2	%	2	%
6 private companies (combined)	1.8x	2.0x	88	%	89	%	24	%	26	%	23	%	37	%	52	%	43	%

(1)Properties where the majority of units are independent living apartments are classified as independent living communities.

(2) In October and November 2007, we acquired six wellness centers that are leased to affiliates of Starmark. The carrying value of this investment is before depreciation and includes intangible assets and liabilities.

(3) These 30 properties are leased to Five Star. Historically, these properties were managed by Sunrise, but effective December 1, 2006, Five Star began managing all 30 of these properties. The rent that Five Star pays to us was subordinate to the management fees paid by Five Star to Sunrise, but is not subordinate to Five Star’s internal management costs. To create a meaningful comparison, the rent coverage presented for this lease is before management fees paid to Sunrise for all 30 properties.

(4) On October 1, 2006, Five Star assumed the operations of these rehabilitation hospitals. These hospitals were formerly operated by HealthSouth. Because we do not have reliable information about the operations of the hospitals by HealthSouth, we do not report operating data for these hospitals before October 1, 2006. The occupancy percentage is based on a 342 available beds capacity.

(5) Marriott guarantees the lease for the 14 properties leased to Sunrise. Sunrise has not filed its restated Annual Reports on Form 10-K for the years ended 2006 and 2005 and has not filed its Quarterly Reports on Form 10-Q for 2007 and 2006 with the SEC due to an accounting issue. Because we do not know what impact the resolution of this accounting issue may have on the reported performance of our properties, we do not report operating data for this tenant.

(6)Independence Blue Cross, a Pennsylvania health insurer, guarantees the lease for the 10 properties leased to NewSeasons.

(7) Brookdale guarantees the lease for the 18 properties leased to Alterra.

(8) All tenant operating data presented are based upon the operating results provided by our tenants for the nine months ended September 30, 2007 and 2006, or the most recent prior period for which tenant operating results are available to us from our tenants. Rent coverage is calculated as operating cash flow from our tenants’ operations of our properties, before subordinated charges, divided by

rent payable to us. We have not included operating data for our wellness centers because we acquired them in October and November 2007. We have not independently verified our tenants’ operating data.

(9) Includes data for periods prior to our ownership of some of these properties.

RESULTS OF OPERATIONS

The following information should be read in conjunction with the consolidated financial statements included in this Annual Report on Form 10-K.

Year Ended December 31, 2007, Compared to Year Ended December 31, 2006

	Year Ended December 31,
	2007		2006			Change			% Change
	(in thousands, except per share amounts)
Rental income	$	185,936	$	178,372		$	7,564		4.2	%
Interest and other income	2,086		1,434			652			45.5	%

Interest expense	37,755		47,020			(9,265		)	(19.7	)%
Depreciation expense	47,384		44,073			3,311			7.5	%
General and administrative expense	14,154		14,645			(491		)	(3.4	)%
Loss on early extinguishment of debt	2,026		6,526			(4,500		)	(69.0	)%
Impairment of assets	1,400		1,420			(20		)	(1.4	)%

Income before loss on sale of properties	85,303		66,122			19,181			29.0	%
Loss on sale of properties	—		(21		)	(21		)	(100.0	)%
Net income	$	85,303	$	66,101		$	19,202		29.0	%

Weighted average shares outstanding	83,168		72,529			10,639			14.7	%

Per share amounts:
Income before loss on sale of properties	$	1.03	$	0.91		$	0.12		13.2	%
Loss on sale of properties	—		—			—			—	%
Net income	$	1.03	$	0.91		$	0.12		13.2	%

Rental income increased in 2007 because of rents from our real estate acquisitions during 2007 and the full year impact of rents from our acquisitions in 2006. These increases were offset by rent reductions resulting from the sale of three properties during the fourth quarter of 2006. Rental income in 2006 also includes $5.7 million of additional rent received from HealthSouth as part of the settlement of our litigation with HealthSouth. Interest and other income increased as a result of higher levels of investable cash and increased yields on our cash and marketable securities.

Interest expense decreased because of lower rates and lesser amounts outstanding under our revolving credit facility. Our weighted average balance outstanding and interest rate under our revolving facility was $20.4 million and 5.7% and $135.9 million and 6.2% for the years ended December 31, 2007 and 2006, respectively. We assumed $14.9 and $12.8 million of mortgage debt at 6.91% and 7.15% in connection with acquisitions during the years ended December 31, 2007 and 2006, respectively. The decrease in interest expense is also due to a decrease in interest on our senior notes and junior subordinated debentures as a result of our purchase and retirement of $20.0 million of our senior notes in January 2007 and repayment of $52.5 million of our senior notes in January 2006 and all $28.2 million of our junior subordinated debentures in June 2006.

Depreciation expense increased because of 2007 real estate acquisitions totaling $125.4 million and the full year impact of 2006 real estate acquisitions totaling $133.1 million. These increases were offset by depreciation eliminated by the sale of three properties during the fourth quarter of 2006. General and administrative expense includes $1.7 million of HealthSouth litigation costs for the year ended December 31, 2006. General and administrative expense, exclusive of litigation costs in 2006, increased in 2007 by $1.2 million, or 9.3%, as a result of property acquisitions and incentive fees payable to RMR.

We recognized a loss on early extinguishment of debt of $2.0 million in connection with our redemption of a portion of our 8 5/8% senior notes in January 2007 and $6.5 million in connection with our redemption of a portion of our 7 7/8% unsecured senior notes in January 2006 and our redemption of all $28.2 million of our 10.125% junior subordinated debentures in June 2006. Also, during 2007 and 2006, we recognized an impairment of assets charge of $1.4 million in both periods related to one property that we intend to sell in 2008 and three properties that were sold during 2006, respectively.

Income before loss on sale of properties and income before loss on sale of properties per share increased because of the changes in revenues and expenses described above.

During the year ended December 31, 2006, we recorded a loss of $21,000 related to three properties sold during 2006.

Net income increased because of the changes that affected income before loss on sale of properties. Net income per share increased because of the changes in revenues and expenses described above, partially offset by an increase in the weighted average number of shares outstanding that resulted from our issuance of common shares in February and December 2007 and November 2006.

Year Ended December 31, 2006, Compared to Year Ended December 31, 2005

	Year Ended December 31,
	2006			2005		Change			% Change
	(in thousands, except per share amounts)
Rental income	$	178,372		$	161,265	$	17,107		10.6	%
Interest and other income	1,434			1,922		(488		)	(25.4	)%

Interest expense	47,020			46,633		387			0.8	%
Depreciation expense	44,073			43,694		379			0.9	%
General and administrative expense	14,645			13,117		1,528			11.6	%
Loss on early extinguishment of debt	6,526			—		6,526			100.0	%
Impairment of assets	1,420			1,762		(342		)	(19.4	)%

Income before (loss) gain on sale of properties	66,122			57,981		8,141			14.0	%
(Loss) gain on sale of properties	(21		)	5,931		(5,952		)	(100.4	)%
Net income	$	66,101		$	63,912	$	2,189		3.4	%

Weighted average shares outstanding	72,529			68,757		3,772			5.5	%

Per share amounts:
Income before (loss) gain on sale of properties	$	0.91		$	0.84	$	0.07		8.3	%
(Loss) gain on sale of properties	—			$	0.09	$	(0.09	)	(100.0	)%
Net income	$	0.91		$	0.93	$	(0.02	)	(2.2	)%

Rental income increased in 2006 because of rents from our real estate acquisitions during 2006 and the full year impact of rents from our acquisitions in 2005. Rental income in 2006 also includes $5.7 million of additional rent received from HealthSouth as part of the settlement of our litigation with HealthSouth. Interest and other income for the year ended December 31, 2005, includes $517,000 of interest income from a $24.0 million mortgage financing we provided to Five Star in June 2005, which Five Star repaid in August 2005.

Interest expense increased because of higher rates and greater amounts outstanding under our revolving credit facility. Our weighted average balance outstanding and interest rate under our revolving facility was $135.9 million and 6.2% and $62.3 million and 4.8% for the years ended December 31, 2006 and 2005, respectively. During 2006, we assumed $12.8 million of mortgage debt at 7.15% in connection with one of our acquisitions. The increase in interest expense is offset by a decrease in interest on our senior notes and junior subordinated

debentures as a result of our repayment of $52.5 million of our senior notes in January 2006 and all $28.2 million of our junior subordinated debentures in June 2006.

Depreciation expense increased because of 2006 real estate acquisitions totaling $133.1 million and the full year impact of 2005 real estate acquisitions totaling $97.5 million. General and administrative expense includes $1.7 million and $1.9 million of HealthSouth litigation costs for the years ended December 31, 2006 and 2005, respectively. General and administrative expense, exclusive of litigation costs, increased in 2006 by $1.7 million, or 15.2%, as a result of property acquisitions and incentive fees payable to RMR.

We recognized a loss on early extinguishment of debt of $6.5 million in connection with our redemption of a portion of our 7 7/8% unsecured senior notes in January 2006 and our redemption of all $28.2 million of our 10.125% junior subordinated debentures in June 2006. Also, during 2006 and 2005, we recognized an impairment of assets charge of $1.4 million and $1.8 million, respectively, related to properties that were sold during 2006.

Income before (loss) gain on sale of properties and income before (loss) gain on sale of properties per share increased because of the changes in revenues and expenses described above.

During the year ended December 31, 2006, we recorded a loss of $21,000 related to three properties sold during 2006. During the year ended December 31, 2005, we recorded a gain of $5.9 million from the sale of three properties sold in 2005.

Net income increased because of the changes described above that affected income before (loss) gain on sale of properties. Net income per share decreased because of the increase in the weighted average number of shares outstanding that resulted from our issuance of common shares during 2006 and 2005.

LIQUIDITY AND CAPITAL RESOURCES

Our Operating Liquidity and Resources

Rents from our properties are our principal sources of funds for current expenses, debt service and distributions to shareholders. We generally receive minimum rents monthly or quarterly from our tenants and we receive percentage rents monthly, quarterly or annually. This flow of funds has historically been sufficient for us to pay our operating expenses, debt service and distributions to shareholders. We believe that this operating cash flow will be sufficient to meet our operating expenses, debt service and expected distribution payments for the foreseeable future.

Our Investment and Financing Liquidity and Resources

In order to fund acquisitions and to accommodate cash needs that may result from timing differences between our receipts of rents and our need or desire to pay operating expenses and distributions to our shareholders, we maintain a revolving credit facility with a group of institutional lenders. In November 2006, we amended our existing revolving credit facility to extend its maturity from November 2009 to December 2010, with an extension option to December 2011 upon payment of an extension fee. The revolving credit facility permits us to borrow up to $550.0 million, and includes a feature which may permit us to increase the maximum borrowing to $1.1 billion, in certain circumstances. Borrowings under our revolving credit facility are unsecured. We may borrow, repay and reborrow funds until maturity. No principal repayment is due until maturity. We pay interest on borrowings under the revolving credit facility at LIBOR plus a premium. At December 31, 2007, the annual interest rate payable on our revolving credit facility was 5.4%. As of December 31, 2007 and February 28, 2008, we had no amounts outstanding under this credit facility.

In January 2007, we purchased and retired $20.0 million of our 8 5/8% senior notes due 2012 and recognized a loss on early extinguishment of debt of $2.0 million. The loss on early extinguishment of debt includes a $1.8 million premium and a $276,000 write off of deferred financing fees and unamortized discounts related to these senior notes. We funded this purchase with borrowings under our revolving credit facility.

In February 2007, we issued 6.0 million of our common shares in a public offering, raising net proceeds of $151.6 million. We used the net proceeds from these offerings to repay borrowings outstanding on our revolving credit facility and for general business purposes.

In October and November 2007, we purchased six wellness centers for a total purchase price of $76.8 million from an unaffiliated third party. Affiliates of Starmark lease these wellness centers under three separate leases. These leases have a current term expiring in 2023, plus renewal options, and require aggregate annual rent of $6.5 million initially, plus CPI based increases. We funded this acquisition using cash on hand, borrowings under our revolving credit facility and by assuming a mortgage on two centers for $14.9 million at 6.91% per annum which matures in 2013.

During 2007, we purchased $47.7 million of improvements made to our properties that are leased to Five Star. We used cash on hand and borrowings under our revolving credit facility to fund these purchases.

In December 2007, we issued 5.0 million of our common shares in a public offering, raising net proceeds of $108.8 million. In February 2008, we issued 6.2 million of our common shares in a public offering, raising net proceeds of $129.3 million. We used the net proceeds from these offerings to repay borrowings outstanding on our revolving credit facility and for general business purposes, and we expect to use these proceeds in part to fund the pending acquisitions described below.

At December 31, 2007, we had $43.5 million of cash and cash equivalents and $550.0 million available under our revolving credit facility. We expect to use cash balances, borrowings under our revolving credit facility and net proceeds of offerings of equity or debt securities to fund future working capital requirements, property acquisitions and expenditures related to the repair, maintenance or renovation of our properties.

In January and February 2008, we purchased eight senior living properties with a total of 804 living units for approximately $86.2 million from three unaffiliated third parties. A majority of the revenues at these properties are paid by residents from their private resources. We leased these properties to Five Star for initial rent of $6.9 million and added them to the combined lease for 114 properties with Five Star, which has a current term expiring in 2020. Percentage rent, based on increases in gross revenues at these properties, will commence in 2010. We funded these acquisitions using cash on hand and with borrowings under our revolving credit facility.

During 2007 and subsequent to year end, we agreed to purchase, from three unaffiliated third parties, 16 senior living properties with a total of 1,000 living units for approximately $197.6 million. These acquisitions have not occurred as of February 28, 2008. A majority of the revenues at these properties are paid by residents from their private resources. We intend to lease these properties to Five Star and to add them to our combined lease of 122 properties (including the eight communities described above) with Five Star, which has a current term expiring in 2020 and we expect the annual rent under this combined lease will increase by $15.8 million. We expect percentage rent, based on increases in gross revenues at these properties, will commence in 2010. We expect to fund these acquisitions using cash on hand, borrowings under our revolving credit facility and by assuming two mortgages, one for $3.6 million at 5.7% per annum and one for $3.6 million at 6.2% per annum. Both mortgages mature in 2041. The purchase of these properties is contingent upon completion of our diligence, other customary closing conditions, and, with respect to the two mortgaged properties, the approval of the lenders. We can provide no assurance that we will purchase these properties.

When significant amounts are outstanding under our revolving credit facility or as the maturity dates of our revolving credit facility and term debts approach, we explore alternatives for the repayment of amounts due. Such alternatives may include incurring additional debt and issuing new equity securities. We have an effective shelf registration statement that allows us to issue public securities on an expedited basis, but it does not assure that there will be buyers for such securities. Also, we may be unable to raise reasonably priced capital because of reasons related to our business or for reasons beyond our control, such as the current downturn in the real estate markets which has restricted the availability of debt in the capital markets. Although there can be no assurance that we will complete any debt or equity offerings or other financings, we believe we will have access to various types of financings, including debt or equity offerings, to finance future acquisitions and to pay our debts and other obligations.

On January 9, 2008, we declared a distribution of $0.35 per common share with respect to our 2007 fourth quarter results. This distribution was paid to shareholders on February 15, 2008, using cash on hand and borrowings under our revolving credit facility.

As of December 31, 2007, our contractual payment obligations were as follows (dollars in thousands):

	Payments due by period
Contractual Obligations	Total		Less than 1 year		1-3 years		3-5 years		More than 5 years
Long-term debt obligations(1)	$	411,955	$	14,076	$	3,257	$	258,137	$	136,485
Capital lease obligations	15,524		295		655		782		13,792
Ground lease obligations	3,003		154		308		308		2,233
Acquisitions(2)	100,250		100,250		—		—		—
Total	$	530,732	$	114,775	$	4,220	$	259,227	$	152,510

(1) At December 31, 2007, our term debt maturities were as follows: $12.6 million in 2008; $100.3 million in 2010; $259.9 million in 2012; $27.3 million in 2013; $97.5 million in 2015; and $14.7 million in 2027.

(2) During 2007 we agreed to purchase, from four unaffiliated third parties, 10 senior living facilities for a total purchase price of $100.3 million. During 2008 we agreed to purchase, from two unaffiliated third parties, 14 senior living facilities for a total purchase price of $183.5 million.

As of February 28, 2008, we have no commercial paper, derivatives, swaps, hedges, joint ventures or partnerships. We have no off balance sheet arrangements.

Debt Covenants

Our principal debt obligations at December 31, 2007, were our unsecured revolving credit facility, two public issues totaling $322.5 million of unsecured senior notes, $89.5 million of mortgage debt and bonds secured by 24 of our properties. As discussed above, we purchased and retired $20.0 million of our senior notes in January 2007. Our senior notes are governed by an indenture. This indenture and related supplements and our revolving credit facility contain a number of financial ratio covenants which generally restrict our ability to incur debts, including debts secured by mortgages on our properties in excess of calculated amounts, require us to maintain a minimum net worth, restrict our ability to make distributions under certain circumstances and require us to maintain other ratios. As of December 31, 2007, we believe we were in compliance with all of the covenants under our indentures and related supplements and our revolving credit facility.

None of our indentures and related supplements, our revolving credit facility or our other debt obligations contains provisions for acceleration which could be triggered by our debt ratings. However, in certain circumstances our revolving credit facility uses our senior debt rating to determine the fees and the interest rate payable.

Our public debt indenture and related supplements contain cross default provisions to any other debts of $10.0 million or more. Similarly, a default on our public debt indenture would be a default under our revolving credit facility.

Related Person Transactions

In 1999, HRPT distributed a majority of our shares to its shareholders. In order to effect this spin off and to govern relations after the spin off, we entered into a transaction agreement with HRPT pursuant to which it was agreed that so long as (1) HRPT owns more than 10% of our shares; (2) we and HRPT engage the same manager; or (3) we and HRPT have one or more common managing trustees; then we will not invest in office buildings, including medical office buildings and clinical laboratory buildings without the prior consent of HRPT’s independent trustees, and HRPT will not invest in properties involving senior housing without the prior consent of our independent trustees. If an investment involves both office and senior housing components, the character of the investment will be determined by building area, excluding common areas, unless our board and HRPT’s board otherwise agree at the time.

On December 31, 2001, we distributed substantially all of our shares of Five Star to our shareholders. At the time Five Star was spun off from us, all of the persons serving as directors of Five Star were also our trustees. One of our trustees, Mr. Barry Portnoy, is currently a managing director of Five Star. As of December 31, 2007, we leased 144 senior living communities and two rehabilitation hospitals to Five Star for total annual minimum rent of $131.4 million. All transactions between us and Five Star subsequent to the Five Star spin off have been approved by our independent trustees who are not directors of Five Star.

Effective October 1, 2006, we leased two rehabilitation hospitals to Five Star which were formerly operated by HealthSouth. The term of the lease for the two hospitals expires on June 30, 2026, and Five Star has one renewal option. The annual rent Five Star pays us for these two hospitals is $10.6 million per year.

During 2007, pursuant to the terms of our leases with Five Star, we purchased approximately $47.7 million of improvements made to our properties leased by Five Star, and, as a result, the annual rent payable to us by Five Star increased by approximately $4.5 million.

RMR originates and presents investment opportunities to our board and provides management and administrative services to us under an agreement. RMR is compensated at an annual rate equal to a percentage of our average real estate investments, as defined. The percentage applied to our existing investments at the time we were spun off from HRPT is 0.5%. The annual percentage for the first $250.0 million of investments made after our spin off from HRPT is 0.7% and the percentage for investments above that amount is 0.5%. In addition, RMR receives an incentive fee based upon increases in our funds from operations per share, as defined. The incentive fee is paid in common shares. Aggregate fees paid to RMR during 2007 were $10.5 million, including $648,000 as an incentive fee which will be paid in our common shares in April 2008. RMR also provides the internal audit function for us and for other publicly owned companies to which it provides management services. Our audit committee appoints our director of internal audit, and our compensation committee approves his salary. Our compensation committee also approves the costs we pay with respect to our internal audit function. Our pro rata share of RMR’s costs in providing that function was $169,000 in 2007. Messrs. Barry Portnoy and his son, Adam Portnoy, beneficially own RMR and are our managing trustees. Adam Portnoy, is the President, Chief Executive Officer and a director of RMR. All transactions between us and RMR are approved by our compensation committee which is composed of independent trustees.

Critical Accounting Policies

Our critical accounting policies are those that have the most impact on the reporting of our financial condition and results of operations and those requiring significant judgments and estimates. We believe that our judgments and assessments are consistently applied and produce financial information that fairly presents our results of operations. Our three most critical accounting policies concern our investments in real property and are as follows:

Allocation of Purchase Price and Recognition of Depreciation Expense. The acquisition cost of each investment is allocated to various property components such as land, buildings and improvements, and each component generally has a different useful life. Acquisition cost allocations and the determination of the useful lives are based on our management’s estimates or, under some circumstances, studies provided by independent real estate appraisal firms. We allocate the value of real estate acquired among building, land, furniture, fixtures and equipment, the value of in place leases and the fair market value of above or below market leases and customer relationships. We compute related depreciation expense using the straight line method over estimated useful lives of up to 40 years for buildings and improvements and up to 12 years for personal property. We amortize the value of intangible assets over the term of the respective lease. We do not depreciate the allocated cost of land. Inappropriate allocation of acquisition costs or incorrect estimates of useful lives could result in depreciation and amortization expenses which are not appropriately reflected on our balance sheet and income as required by generally accepted accounting principles.

Impairment of Assets. We periodically evaluate our real property investments for impairment indicators. These indicators may include weak or declining tenant profitability, cash flow or liquidity, our decision to dispose of an asset before the end of its estimated useful life and market or industry changes that could permanently reduce the value of our investments. If indicators of impairment are present, we evaluate the carrying value of the real property investment by comparing it to the expected future undiscounted cash flows to be generated. If the sum of these expected future cash flows is less than the carrying value, we reduce the net carrying value to the present value of these expected future cash flows. This analysis requires us to judge whether indicators of impairment exist and to estimate likely future cash flows. If we misjudge or estimate incorrectly or if future tenant profitability, market or industry factors differ from our expectations, we may record an impairment charge which is inappropriate or fail to record a charge when we should have done so, or the amount of such charges may be inaccurate.

Classification of Leases. Our real property investments are generally leased on a triple net basis, pursuant to non-cancelable, fixed term, operating leases. Each time we enter a new lease or materially modify an existing lease we evaluate its classification as either a capital lease or an operating lease. The classification of a lease as capital or operating affects the carrying value of a property, as well as our recognition of rental payments as revenues. These evaluations require us to make estimates of, among other things, the remaining useful life and market value of a leased property, appropriate discount rates and future cash flows. Incorrect assumptions or estimates may result in misclassification of our leases. These policies involve significant judgments based upon our experience, including judgments about current valuations, ultimate realizable value, estimated useful lives, salvage or residual values, the ability of our tenants and operators to perform their obligations to us, and the current and likely future operating and competitive environments in which our properties are operated. In the future we may need to revise our assessments to incorporate information which is not now known, and such revisions could increase or decrease our depreciation expense related to properties we own, result in the classification of some of our leases as other than operating leases or decrease the carrying values of some of our assets.

Impact of Inflation

Inflation might have both positive and negative impacts upon us. Inflation might cause the value of our real estate investments to increase. In an inflationary environment, the percentage rents which we receive based upon a percentage of our tenants’ revenues should increase. Offsetting these benefits, inflation might cause our costs of equity and debt capital and other operating costs to increase. An increase in our capital costs or in our operating costs will result in decreased earnings unless it is offset by increased revenues. In periods of rapid inflation, our tenants’ operating costs may increase faster than revenues and this fact may have an adverse impact upon us if our tenants’ operating income from our properties becomes insufficient to pay our rent. To mitigate the adverse impact of increased operating costs at our leased properties, we generally require our tenants to provide

guarantees for our rent. To mitigate the adverse impact of increased costs of debt capital in the event of material inflation, we previously have purchased interest rate cap agreements and we may enter into similar interest rate hedge arrangements in the future. The decision to enter into these agreements was and will be based on the amount of our floating rate debt outstanding, our belief that material interest rate increases are likely to occur and the requirements of our borrowing arrangements.

Impact of Government Reimbursement

Approximately 85% of our current annual rents come from properties where approximately 80% or more of the operating revenues are derived from residents who pay from their own private resources. The remaining 15% of our rents come from properties where the revenues are heavily dependent upon Medicare and Medicaid programs. The operations of these properties currently produce sufficient cash flow to support our rent. However, as discussed above in “Business — Government Regulation and Reimbursement”, we expect that Medicare and Medicaid rates paid to our tenants may not increase in amounts sufficient to pay our tenants’ increased operating costs, or that they may even decline. Also, the hospitals we lease to Five Star are heavily dependent upon Medicare revenues. We cannot predict whether our tenants which are affected by Medicare and Medicaid rates will be able to continue to pay their rent obligations if these expected circumstances occur and persist for an extended time.

Seasonality

Nursing home and assisted living operations have historically reflected modest seasonality. During calendar fourth quarter holiday periods, residents at such facilities are sometimes discharged to join in family celebrations and admission decisions are often deferred. The first quarter of each calendar year usually coincides with increased illness among residents which can result in increased costs or discharges to hospitals. As a result of these factors and others, these operations sometimes produce greater earnings in the second and third quarters of each calendar year and lesser earnings in the fourth and first calendar quarters. We do not expect these seasonal differences to have a material impact upon the ability of our tenants to pay our rent.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

We are exposed to risks associated with market changes in interest rates. We manage our exposure to this market risk by monitoring available financing alternatives. Our strategy to manage exposure to changes in interest rates is unchanged from December 31, 2006. Other than as described below, we do not foresee any significant changes in our exposure to fluctuations in interest rates or in how we manage this exposure in the future.

At December 31, 2007, our outstanding fixed rate debt included the following (dollars in thousands):

Debt	Principal Balance		Annual Interest Rate		Annual Interest Expense		Maturity	Interest Payments Due
Unsecured senior notes	$	225,000	8.625	%	$	19,406	2012	Semi-Annually
Unsecured senior notes	97,500		7.875	%	7,678		2015	Semi-Annually
Mortgages	34,889		6.97	%	2,432		2012	Monthly
Mortgage	15,283		6.91	%	1,056		2013	Monthly
Mortgage	12,605		7.15	%	901		2008	Monthly
Mortgages	11,978		6.11	%	732		2013	Monthly
Bonds	14,700		5.875	%	864		2027	Semi-Annually
	$	411,955			$	33,069

No principal payments are due under our unsecured notes or bonds until maturity. Our mortgages require principal and interest payments through maturity pursuant to amortization schedules. Because these debts bear interest at a fixed rate, changes in market interest rates during the term of these debts will not affect our operating results. If these debts are refinanced at interest rates which are 10% higher or lower than shown above, our per annum interest cost would increase or decrease by approximately $2.7 million. Changes in market interest rates also affect the fair value of our fixed rate debt obligations; increases in market interest rates decrease the fair value of our fixed rate debt, while decreases in market interest rates increase the fair value of our fixed rate debt. Based on the balances outstanding at December 31, 2007, and discounted cash flow analysis through the maturity date of our fixed rate debt obligations, a hypothetical immediate 10% change in interest rates would change the fair value of those obligations by approximately $11.3 million.

We are allowed to make prepayments of our unsecured senior notes, in whole or in part, at par plus a premium, as defined. Our mortgages contain provisions that allow us to make repayment at par plus premiums which is generally designed to preserve a stated yield to the mortgage holder. Also, as we did in January 2007, we occasionally have the opportunity to purchase our outstanding debt by open market purchases. These prepayment rights may afford us the opportunity to mitigate the risk of refinancing at maturity.

Item 8. Financial Statements and Supplementary Data

The information required by this item is included in Item 15 of this Annual Report on Form 10-K.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

As of the end of the period covered by this report, our management carried out an evaluation, under the supervision and with the participation of our managing trustees, President and Chief Operating Officer and Treasurer and Chief Financial Officer, of the effectiveness of our disclosure controls and procedures pursuant to Exchange Act Rules 13a-15 and 15d-15. Based upon that evaluation, our managing trustees, President and Chief Operating Officer and Treasurer and Chief Financial Officer concluded that our disclosure controls and procedures are effective.

There have been no changes in our internal control over financial reporting during the quarter ended December 31, 2007 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Management Report on Assessment of Internal Control over Financial Reporting

We are responsible for establishing and maintaining adequate internal control over financial reporting. Our internal control system is designed to provide reasonable assurance to our management and board of trustees regarding the preparation and fair presentation of published financial statements. All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation.

Our management assessed the effectiveness of our internal control over financial reporting as of December 31, 2007. In making this assessment, it used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission in Internal Control-Integrated Framework. Based on our assessment, we believe that, as of December 31, 2007, our internal control over financial reporting is effective.

Ernst & Young LLP, the independent registered public accounting firm that audited our 2007 consolidated financial statements included in this Annual Report on Form 10-K, has issued an attestation report on our internal control over financial reporting. The report appears elsewhere herein.

Item 9B. Other Information

None.

PART III

Item 10. Directors, Executive Officers and Corporate Governance

We have a code of business conduct and ethics that applies to all our representatives, including our officers and trustees and employees of RMR. Our code of business conduct and ethics is posted on our website, www.snhreit.com. A printed copy of our code of business conduct and ethics is also available free of charge to any person who requests a copy. We intend to disclose any amendments or waivers to our code of business conduct and ethics applicable to our principal executive officer, principal financial officer, principal accounting officer or controller (or any person performing similar functions) on our website.

The remainder of the information required by Item 10 is incorporated by reference to our definitive Proxy Statement, which will be filed not later than 120 days after the end of our fiscal year.

Item 11. Executive Compensation

The information required by Item 11 is incorporated by reference to our definitive Proxy Statement, which will be filed not later than 120 days after the end of our fiscal year.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Equity Compensation Plan Information. We may grant common shares to our officers and other employees of RMR under either our 1999 Incentive Share Award Plan or our 2003 Incentive Share Award Plan, collectively referred to as the Award Plans. In addition, each of our trustees receives 1,500 shares per year each as part of his annual compensation for serving as a trustee and such shares may be awarded under either of these plans. The terms of grants made under these plans are determined by our board of trustees, or a committee thereof, at the time of the grant. The following table is as of December 31, 2007.

	Number of securities to be issued upon exercise of outstanding options, warrants and rights (a)	Weighted-average exercise price of outstanding options, warrants and rights (b)	Number of securities remaining available for future issuance under equity compensation plans and excluding securities reflected in column (a) (c)

Equity compensation plans approved by security holders — 1999 Plan	None.	None.	2,709,840(1)

Equity compensation plans not approved by security holders — 2003 Plan	None.	None.	2,709,840(1)

Total	None.	None.	2,709,840(1)

(1)Pursuant to the terms of the Award Plans, in no event shall the aggregate number of shares issued under both plans exceed 2,921,920. Since the Award Plans were established, 212,080 share awards have been granted.

Payments by us to RMR are described in Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources — Related Person Transactions”. The remainder of the information required by Item 12 is incorporated by reference to our definitive Proxy Statement, which will be filed not later than 120 days after the end of our fiscal year.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required by Item 13 is incorporated by reference to our definitive Proxy Statement, which will be filed not later than 120 days after the end of our fiscal year.

Item 14. Principal Accountant Fees and Services

The information required by Item 14 is incorporated by reference to our definitive Proxy Statement, which will be filed not later than 120 days after the end of our fiscal year.

PART IV

Item 15. Exhibits and Financial Statement Schedules

(a) Index to Financial Statements and Financial Statement Schedules

The following consolidated financial statements and financial statement schedule of Senior Housing Properties Trust are included on the pages indicated:

		Page
Report of Ernst & Young LLP, Independent Registered Public Accounting Firm		F-1
Consolidated Balance Sheet as of December 31, 2007 and 2006		F-3
Consolidated Statement of Income for each of the three years in the period ended December 31, 2007		F-4
Consolidated Statement of Shareholders’ Equity for each of the three years in the period ended December 31, 2007		F-5
Consolidated Statement of Cash Flows for each of the three years in the period ended December 31, 2007		F-6
Notes to Consolidated Financial Statements		F-8
Schedule III — Real Estate and Accumulated Depreciation as of December 31, 2007		S-1

All other schedules for which provision is made in the applicable accounting regulations of the Securities and Exchange Commission are not required under the related instructions, or are inapplicable, and therefore have been omitted.

b) Exhibits

Exhibit
Number		Description

3.1		Composite Copy of Amended and Restated Declaration of Trust, dated September 20, 1999, as amended to date. (Incorporated by reference to the Company’s Current Report on Form 8-K dated February 21, 2008.)

3.2		Articles Supplementary dated May 11, 2000. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2000.)

3.3		Articles Supplementary dated March 10, 2004. (Incorporated by reference to the Company’s Registration Statement on Form 8-A dated March 18, 2004.)

3.4		Certificate of Correction dated March 29, 2004. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2004.)

3.5		Composite Copy of Amended and Restated Bylaws, dated March 14, 2003, as amended to date. (Incorporated by reference to the Company’s Current Report on Form 8-K dated June 1, 2007.)

4.1		Form of common share certificate. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2000.)

4.2		Indenture, dated as of December 20, 2001, between the Company and State Street Bank and Trust Company. (Incorporated by reference to the Company’s Registration Statement on Form S-3, File No. 333-76588.)

4.3		Supplemental Indenture No. 1, dated December 20, 2001, by and between the Company and State Street Bank and Trust Company. (Incorporated by reference to the Company’s Current Report on Form 8-K dated February 13, 2002.)

4.4		Supplemental Indenture No. 2, dated December 28, 2001, by and between the Company and State Street Bank and Trust Company. (Incorporated by reference to the Company’s Current Report on Form 8-K dated February 13, 2002.)

4.5		Supplemental Indenture No. 3, dated as of April 21, 2003, between the Company and U.S. Bank National Association. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2003.)

4.6		Rights Agreement, dated as of March 10, 2004, by and between the Company and Equiserve Trust Company, N.A. (Incorporated by reference to the Company’s Current Report on Form 8-K dated March 10, 2004.)

4.7		Appointment of Successor Rights Agent, dated as of December 13, 2004, by and between the Company and Wells Fargo Bank, National Association. (Incorporated by reference to the Company’s Current Report on Form 8-K dated December 13, 2004.)

8.1		Opinion of Sullivan & Worcester LLP as to certain tax matters. (Filed herewith.)

10.1		Amended and Restated Advisory Agreement, dated as of January 1, 2006, between the Company and Reit Management & Research LLC. (+) (Incorporated by reference to the Company’s Annual Report on Form 10-K/A for the year ended December 31, 2005.)

10.2		1999 Incentive Share Award Plan. (+) (Incorporated by reference to the Company’s Registration Statement on Form S-11, File No. 333-69703.)

10.3		Amendment to the 1999 Incentive Share Award Plan. (+) (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2003.)

10.4		2003 Incentive Share Award Plan. (+) (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2003.)

10.5		Form of Restricted Share Agreement. (+) (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2003.)

10.6		Representative Indemnification Agreement. (+) (Filed herewith.)

10.7		Summary of Trustee Compensation. (+) (Incorporated by reference to the Company’s Current Report on Form 8-K dated May 9, 2006.)

10.8		Transaction Agreement, dated September 21, 1999, between HRPT Properties Trust and the Company. (Incorporated by reference to the Current Report on Form 8-K dated October 12, 1999 by HRPT Properties Trust.)

10.9		Representative Lease for properties leased to subsidiaries of Marriott International, Inc. (Incorporated by reference to the Company’s Registration Statement on Form S-11, File No. 333-69703.)

10.10		Representative Guaranty of Tenant Obligations, dated as of October 8, 1993, by Marriott International, Inc. in favor of HMC Retirement Properties, Inc. (Incorporated by reference to the Company’s Registration Statement on Form S-11, File No. 333-69703.)

10.11		Representative First Amendment to Lease for properties leased to subsidiaries of Marriott International, Inc. (Incorporated by reference to the Company’s Registration Statement on Form S-11, File No. 333-69703.)

10.12		Representative Assignment and Assumption of Leases, Guarantees and Permits for properties leased to subsidiaries of Marriott International, Inc. (Incorporated by reference to the Company’s Registration Statement on Form S-11, File No. 333-69703.)

10.13		Representative Second Amendment of Lease for properties leased to subsidiaries of Marriott International, Inc. (Incorporated by reference to the Company’s Registration Statement on Form S-11, File No. 333-69703.)

10.14		Representative First Amendment of Guaranty by Marriott International, Inc., dated as of May 16, 1994, in favor of HMC Retirement Properties, Inc. (Incorporated by reference to the Company’s Registration Statement on Form S-11, File No. 333-69703.)

10.15		Assignment of Lease, dated as of June 16, 1994, by HMC Retirement Properties, Inc. in favor of Health and Rehabilitation Properties Trust. (Incorporated by reference to the Company’s Registration Statement on Form S-11, File No. 333-69703.)

10.16		Third Amendment to Facilities Lease, dated as of June 30, 1994, between HMC Retirement Properties, Inc. and Marriott Senior Living Services, Inc. (Incorporated by reference to the Company’s Registration Statement on Form S-11, File No. 333-69703.)

10.17		Third Amendment of Lease, dated August 4, 2000, between SPTMRT Properties Trust and Marriott Senior Living Services, Inc. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2000.)

10.18		Representative Fourth Amendment of Lease for properties leased to subsidiaries of Marriott International, Inc. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2000.)

10.19		Representative Fifth Amendment of Lease for properties leased to subsidiaries of Marriott International, Inc. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2000.)

10.20		Amended and Restated Lease Agreement, dated as of January 1, 2000, between HRES1 Properties Trust and IHS Acquisition 135, Inc. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000.)

10.21		Transaction Agreement, dated December 7, 2001, by and among the Company, certain subsidiaries of the Company party thereto, Five Star Quality Care, Inc., certain subsidiaries of Five Star Quality Care, Inc. party thereto, FSQ, Inc., Hospitality Properties Trust, HRPT Properties Trust and Reit Management & Research, LLC. (Incorporated by reference to the Company’s Current Report on Form 8-K dated December 13, 2001.)

10.22		Second Amended and Restated Master Lease Agreement by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant, dated November 19, 2004. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2004.)

10.23		First Amendment to Second Amended and Restated Master Lease Agreement, dated as of May 17, 2005, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Current Report on Form 8-K dated June 8, 2005.)

10.24		Second Amendment to Second Amended and Restated Master Lease Agreement, dated as of June 3, 2005, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Current Report on Form 8-K dated June 8, 2005.)

10.25		Third Amendment to Second Amended and Restated Master Lease Agreement, dated as of October 31, 2005, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2005.)

10.26		Third [Fourth] Amendment to Second Amended and Restated Master Lease Agreement, dated as of December 30, 2005, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2006.)

10.27		Letter Agreement, dated as of March 13, 2006, by and between the Company and Five Star Quality Care Trust. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2006.)

10.28		Fifth Amendment to Second Amended and Restated Master Lease Agreement, dated as of October 1, 2006, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2006.)

10.29		Sixth Amendment to Second Amended and Restated Master Lease Agreement, dated as of October 1, 2006, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2006.)

10.30		Seventh Amendment to Second Amended and Restated Master Lease Agreement, dated as of October 1, 2006, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2006.)

10.31		Eighth Amendment to Second Amended and Restated Master Lease Agreement, dated as of November 1, 2006, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2006.)

10.32		Ninth Amendment to Second Amended and Restated Master Lease Agreement, dated as of November 1, 2006, by and among certain subsidiaries of the Company, as Landlord, and Five

Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2006.)

10.33		Tenth Amendment to Second Amended and Restated Master Lease Agreement, dated as of November 6, 2006 (effective as of November 5, 2006), by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2006.)

10.34		Eleventh Amendment to Second Amended and Restated Master Lease Agreement, dated as of December 22, 2006, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2006.)

10.35		Twelfth Amendment to Second Amended and Restated Master Lease Agreement, dated as of January 1, 2007, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2006.)

10.36		Thirteenth Amendment to Second Amended and Restated Master Lease Agreement, dated as of January 4, 2008, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Filed herewith.)

10.37		Fourteenth Amendment to Second Amended and Restated Master Lease Agreement, dated as of February 7, 2008, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Filed herewith.)

10.38		Fifteenth Amendment to Second Amended and Restated Master Lease Agreement, dated as of February 17, 2008, by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant. (Filed herewith.)

10.39		Guaranty Agreement made by Five Star Quality Care, Inc., as Guarantor, for the benefit of certain subsidiaries of the Company, dated December 31, 2001, relating to the Maser Lease Agreement by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant, dated December 31, 2001. (Incorporated by reference to the Company’s Current Report on Form 8-K filed January 24, 2002.)

10.40		Guaranty Agreement made by Five Star Quality Care, Inc., as Guarantor, for the benefit of the Company and certain subsidiaries of the Company, dated October 25, 2002, relating to the Amended and Restated Master Lease Agreement by and among certain subsidiaries of the Company, as Landlord, and Five Star Quality Care Trust, as Tenant, dated March 1, 2004, as amended. (Incorporated by reference to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004.)

10.41		Amended Master Lease Agreement by and among certain subsidiaries of the Company, as Landlords, and FS Tenant Holding Company Trust, as Tenant, dated January 11, 2002. (Incorporated by reference to the Company’s Current Report on Form 8-K dated December 31, 2001.)

10.42		Guaranty Agreement made by Five Star Quality Care, Inc., as Guarantor, for the benefit of certain subsidiaries of the Company, dated January 11, 2002, relating to the Amended Master Lease Agreement by and among certain subsidiaries of the Company, as Landlord, and FS Tenant Holding Company Trust and FS Tenant Pool III Trust, as Tenant, dated January 11, 2002. (Incorporated by reference to the Company’s Current Report on Form 8-K dated December 31, 2001.)

10.43		First Amendment to Amended Master Lease Agreement by and among certain subsidiaries of the Company, as Landlord, and FS Tenant Holding Company Trust and FS Tenant Pool III Trust as Tenant, dated October 1, 2002. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2002.)

10.44		Second Amendment to Master Lease Agreement by and among certain subsidiaries of the Company, as Landlord, and FS Tenant Holding Company Trust and FS Tenant Pool III Trust as Tenants, dated March 1, 2004. (Incorporated by reference to the Company’s Annual Report on Form 10-K for the year ended December 31, 2003.)

10.45		Amended and Restated Credit Agreement, dated as of July 29, 2005, by and among the Company, Wachovia Bank, National Association, as Administrative Agent, the Sole Arranger, the Sole Book Manager, the Syndication Agents and the Documentation Agents signatory thereto, and each of the financial institutions initially a signatory thereto as a Lender. (Incorporated by reference to the Company’s Current Report on Form 8-K dated August 1, 2005.)

10.46		First Amendment to Amended and Restated Credit Agreement, dated as of November 15, 2006, by and among the Company, Wachovia Bank, National Association, as Administrative Agent, and the additional agents, arrangers and financial institutions signatory thereto. (Incorporated by reference to the Company’s Current Report on Form 8-K dated November 17, 2006.)

12.1		Ratio of Earnings to Fixed Charges. (Filed herewith.)

21.1		List of Subsidiaries. (Filed herewith.)

23.1		Consent of Sullivan & Worcester LLP. (Contained in Exhibit 8.1.)

23.2		Consent of Ernst and Young LLP. (Filed herewith.)

31.1		Rule 13a-14(a) Certification. (Filed herewith.)

31.2		Rule 13a-14(a) Certification. (Filed herewith.)

31.3		Rule 13a-14(a) Certification. (Filed herewith.)

31.4		Rule 13a-14(a) Certification. (Filed herewith.)

32.1		Section 1350 Certification. (Furnished herewith.)

(+) Management contract or compensatory plan or arrangement

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Trustees and Shareholders of Senior Housing Properties Trust:

We have audited the accompanying consolidated balance sheets of Senior Housing Properties Trust (the “Company”) as of December 31, 2007 and 2006, and the related consolidated statements of income, shareholders’ equity and cash flows for each of the three years in the period ended December 31, 2007. Our audits also included the financial statement schedule listed in the Index at Item 15(a). These financial statements and schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements and schedule based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Senior Housing Properties Trust at December 31, 2007 and 2006, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2007, in conformity with U.S. generally accepted accounting principles. Also, in our opinion, the related financial statement schedule, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information set forth therein.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), Senior Housing Properties Trust’s internal control over financial reporting as of December 31, 2007, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 22, 2008 expressed an unqualified opinion thereon.

			/s/ Ernst & Young LLP
Boston, Massachusetts
February 22, 2008

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Trustees and Shareholders of Senior Housing Properties Trust:

We have audited Senior Housing Properties Trust’s internal control over financial reporting as of December 31, 2007, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). Senior Housing Properties Trust’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in Item 9A of Senior Housing Properties Trust’s Annual Report on Form 10-K under the heading Management Report on Assessment of Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, Senior Housing Properties Trust maintained, in all material respects, effective internal control over financial reporting as of December 31, 2007, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 2007 consolidated financial statements of Senior Housing Properties Trust and our report dated February 22, 2008 expressed an unqualified opinion thereon.

			/s/ Ernst & Young LLP
Boston, Massachusetts
February 22, 2008

F-2

SENIOR HOUSING PROPERTIES TRUST

CONSOLIDATED BALANCE SHEET

(IN THOUSANDS, EXCEPT SHARE AMOUNTS)

	December 31,
	2007			2006
ASSETS
Real estate properties, at cost:
Land	$	217,236		$	198,887
Buildings and improvements	1,723,111			1,615,471
	1,940,347			1,814,358
Less accumulated depreciation	323,891			276,507
	1,616,456			1,537,851
Cash and cash equivalents	43,521			5,464
Restricted cash	3,642			2,435
Investments in available for sale securities	8,020			12,740
Deferred financing fees, net	5,974			8,173
Due from affiliate	11,388			10,111
Other assets	12,893			8,123
Total assets	$	1,701,894		$	1,584,897

LIABILITIES AND SHAREHOLDERS’ EQUITY
Unsecured revolving credit facility	$	—		$	112,000
Senior unsecured notes due 2012 and 2015, net of discount	321,873			341,673
Secured debt and capital leases	104,979			91,412
Accrued interest	10,849			11,694
Due to affiliate	1,496			1,624
Other liabilities	13,287			7,028
Total liabilities	452,484			565,431

Commitments and contingencies

Shareholders’ equity:
Common shares of beneficial interest, $0.01 par value: 94,700,000 shares authorized, 88,691,892 and 77,613,127 shares issued and outstanding at December 31, 2007 and 2006, respectively	887			776
Additional paid-in capital	1,476,675			1,214,863
Cumulative net income	423,807			338,504
Cumulative distributions	(653,225		)	(540,663		)
Unrealized gain on investments	1,266			5,986
Total shareholders’ equity	1,249,410			1,019,466
Total liabilities and shareholders’ equity	$	1,701,894		$	1,584,897

See accompanying notes.

F-3

SENIOR HOUSING PROPERTIES TRUST

CONSOLIDATED STATEMENT OF INCOME

(IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

	Year Ended December 31,
	2007		2006			2005
Revenues:
Rental income	$	185,936	$	178,372		$	161,265
Interest and other income	2,086		1,434			1,922
Total revenues	188,022		179,806			163,187

Expenses:
Interest	37,755		47,020			46,633
Depreciation	47,384		44,073			43,694
General and administrative	14,154		14,645			13,117
Loss on early extinguishment of debt	2,026		6,526			—
Impairment of assets	1,400		1,420			1,762
Total expenses	102,719		113,684			105,206
Income before (loss) gain on sale of properties	85,303		66,122			57,981
(Loss) gain on sale of properties	—		(21		)	5,931
Net income	$	85,303	$	66,101		$	63,912

Weighted average shares outstanding	83,168		72,529			68,757

Basic and diluted earnings per share:
Income before (loss) gain on sale of properties	$	1.03	$	0.91		$	0.84
Gain on sale of properties	—		—			$	0.09
Net income	$	1.03	$	0.91		$	0.93

See accompanying notes.

F-4

SENIOR HOUSING PROPERTIES TRUST

CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY

(DOLLARS IN THOUSANDS)

	Number of Shares	Common Shares		Additional Paid-in Capital		Cumulative Net Income		Cumulative Distributions			Unrealized Gain (Loss) on Investments			Totals
Balance at December 31, 2004:	68,495,908	$	685	$	1,034,686	$	208,491	$	(359,567	)	$	6,372		$	890,667
Comprehensive income	—	—		—		63,912		—			(2,500		)	61,412
Distributions	—	—		—		—		(87,722		)	—			(87,722		)
Issuance of shares	3,250,000	33		58,137		—		—			—			58,170
Share grants	27,300	—		6		—		—			—			6
Incentive fee	39,019	—		651		—		—			—			651
Balance at December 31, 2005:	71,812,227	718		1,093,480		272,403		(447,289		)	3,872			923,184
Comprehensive income	—	—		—		66,101		—			2,114			68,215
Distributions	—	—		—		—		(93,374		)	—			(93,374		)
Issuance of shares	5,750,000	58		120,723		—		—			—			120,781
Share grants	50,900	—		660		—		—			—			660
Balance at December 31, 2006:	77,613,127	776		1,214,863		338,504		(540,663		)	5,986			1,019,466
Comprehensive income	—	—		—		85,303		—			(4,720		)	80,583
Distributions	—	—		—		—		(112,562		)	—			(112,562		)
Issuance of shares	11,000,000	111		260,336		—		—			—			260,447
Share grants	78,765	—		1,476		—		—			—			1,476
Balance at December 31, 2007:	88,691,892	$	887	$	1,476,675	$	423,807	$	(653,225	)	$	1,266		$	1,249,410

See accompanying notes.

F-5

SENIOR HOUSING PROPERTIES TRUST

CONSOLIDATED STATEMENT OF CASH FLOWS

(IN THOUSANDS)

	Year Ended December 31,
	2007			2006			2005
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	85,303		$	66,101		$	63,912
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	47,384			44,073			43,694
Amortization of deferred financing fees and debt discounts	2,124			1,852			2,212
Amortization of acquired real estate leases	(16		)	—			—
Impairment of assets	1,400			1,420			1,762
Loss on early extinguishment of debt	2,026			6,526			—
Loss (gain) on sale of properties	—			21			(5,931		)
Changes in assets and liabilities:
Restricted cash	(1,207		)	94			(523		)
Purchases of trading securities	10,153			—			—
Sales of trading securities	(10,153		)	—			—
Other assets	(3,177		)	(3,486		)	(813		)
Accrued interest	(845		)	(1,395		)	570
Other liabilities	2,906			1,263			(661		)
Cash provided by operating activities	135,898			116,469			104,222

CASH FLOWS FROM INVESTING ACTIVITIES:
Real estate acquisitions	(110,238		)	(120,347		)	(97,480		)
Mortgage financing provided	—			—			(24,000		)
Mortgage financing repaid by mortgagor	—			—			24,000
Proceeds from sale of real estate	—			6,879			12,537
Cash used for investing activities	(110,238		)	(113,468		)	(84,943		)

CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common shares, net	260,447			120,781			58,170
Proceeds from borrowings on revolving credit facility	87,000			213,000			143,000
Repayments of borrowings on revolving credit facility	(199,000		)	(165,000		)	(116,000		)
Redemption of senior notes	(21,750		)	(56,634		)	—
Repayment of junior subordinated debentures	—			(28,241		)	—
Repayment of other debt	(1,738		)	(1,489		)	(1,851		)
Deferred financing fees	—			(1,222		)	(3,643		)
Distributions to shareholders	(112,562		)	(93,374		)	(87,722		)
Cash provided by (used for) financing activities	12,397			(12,179		)	(8,046		)
Increase (decrease) in cash and cash equivalents	38,057			(9,178		)	11,233
Cash and cash equivalents at beginning of period	5,464			14,642			3,409
Cash and cash equivalents at end of period	$	43,521		$	5,464		$	14,642

See accompanying notes.

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SENIOR HOUSING PROPERTIES TRUST

CONSOLIDATED STATEMENT OF CASH FLOWS

(IN THOUSANDS)

	Year Ended December 31,
	2007			2006			2005
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid	$	36,476		$	46,488		$	43,851

NON-CASH INVESTING ACTIVITIES:
Debt assumed in acquisition	(14,875		)	(12,785		)	—
Increase in capital lease assets	—			(9,975		)	—

NON-CASH FINANCING ACTIVITIES:
Assumption of mortgage notes payable	14,875			12,785			—
Increase in capital lease obligations	—			9,975			—
Issuance of common shares	1,476			660			657
Release of restricted cash to us	—			—			4,170
Repayment of debt with cash previously restricted	—			—			(4,170		)

See accompanying notes.

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SENIOR HOUSING PROPERTIES TRUST

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1. Organization

We are a Maryland real estate investment trust, or REIT. At December 31, 2007, we owned 202 properties located in 32 states.

Note 2. Summary of Significant Accounting Policies

BASIS OF PRESENTATION. Our consolidated financial statements include the accounts of Senior Housing Properties Trust, or the Company, and all of our consolidated subsidiaries. We have eliminated all intercompany transactions.

REAL ESTATE PROPERTIES. We depreciate real estate properties on a straight line basis over estimated useful lives of up to 40 years for buildings and improvements and up to 12 years for personal property. Our management regularly evaluates whether events or changes in circumstances have occurred that could indicate an impairment in the value of long lived assets. If there is an indication that the carrying value of an asset is not recoverable, we estimate the projected undiscounted cash flows to determine if an impairment loss should be recognized. We determine the amount of impairment loss by comparing the historical carrying value to estimated fair value. We estimate fair value through an evaluation of recent financial performance and projected discounted cash flows using standard industry valuation techniques. In addition to consideration of impairment upon the events or changes in circumstances described above, we regularly evaluate the remaining lives of our long lived assets. If we change our estimate of the remaining lives, we allocate the carrying value of the affected assets over their revised remaining lives.

We allocate the value of real estate acquired among buildings, land, furniture, fixtures and equipment, the value of in-place leases and the fair market value of above or below market leases and customer relationships. We amortize the value of intangible assets over the term of the respective lease.

Intangible lease assets and liabilities recorded by us for properties acquired in 2007 totaled $2.4 million and $4.3 million, respectively. Accumulated amortization of capitalized above and below market lease values resulted in $31,000 of additional revenue at December 31, 2007. Accumulated amortization of the value of in place leases exclusive of the value of above and below market in place leases resulted in $15,000 of additional expense at December 31, 2007. Future amortization of intangible lease assets and liabilities to be recognized by us during the current terms of our leases as of December 31, 2007, will be approximately $118,000 in each of 2008, 2009, 2010, 2011, and 2012 and $1.2 million thereafter. Intangible lease assets and liabilities are included in Other Assets and Other Liabilities in the accompanying balance sheet.

CASH AND CASH EQUIVALENTS. We carry cash and cash equivalents, consisting of overnight repurchase agreements and short term investments with original maturities of three months or less at the date of purchase, at cost plus accrued interest, which approximates fair value.

RESTRICTED CASH. Restricted cash consists of amounts escrowed for real estate taxes, insurance and capital expenditures at 23 of our mortgaged properties.

INVESTMENTS IN AVAILABLE FOR SALE SECURITIES. We own 1,000,000 common shares, or 0.44%, of HRPT Properties Trust, or HRPT. We also own 35,000 common shares, or 0.11%, of Five Star Quality Care, Inc., or Five Star, which we retained or received when we spun off Five Star in 2001. We classify these holdings as available for sale and carry them at fair value, with unrealized gains and losses reported as a separate component of shareholders’ equity. The unrealized gain on investments shown on the Consolidated Balance Sheet represents the difference between the market value of these shares of HRPT and Five Star calculated by using quoted market prices on the date they were acquired ($6.50 and $7.26 per share, respectively) and on December 31, 2007 ($7.73 and $8.30 per share, respectively). At December 31, 2007, our investment in HRPT had a fair value of $7.7 million, including an unrealized gain of $1.3 million. At December 31, 2006, our investment in HRPT had a fair value of $12.4 million, including an unrealized gain of $6.0 million. At December 31, 2007, our investment in Five Star had a fair value of $290,000, including an unrealized gain of $36,000. At December 31, 2006, our investment in Five Star had a fair value of $390,000, including an unrealized gain of $136,000.

F-8

SENIOR HOUSING PROPERTIES TRUST

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

DEFERRED FINANCING FEES. We capitalize issuance costs related to borrowings and amortize them over the terms of the respective loans. During 2007, we wrote off $276,000 of deferred financing fees and unamortized discounts in connection with the retirement of some of our 8 5/8% senior notes. During 2006, we wrote off $2.4 million of unamortized deferred financing fees in connection with our partial redemption of our 7 7/8% unsecured senior notes and our redemption of all our junior subordinated debentures. The unamortized balance of deferred financing fees and accumulated amortization was $12.6 million and $6.6 million, and $13.1 million and $4.9 million at December 31, 2007 and 2006, respectively. The weighted average amortization period is approximately five years. The amortization expense for the five years subsequent to December 31, 2007 will be $1.9 million in 2008, $1.8 million in 2009, $686,000 in each of 2010 and 2011, and $219,000 in 2012.

REVENUE RECOGNITION. We recognize rental income from operating leases on a straight line basis over the life of the respective lease agreement. We recognize interest income as earned over the terms of real estate mortgages. We recognize percentage rents when realizable and earned, which is generally during the fourth quarter. For the years ended December 31, 2007, 2006 and 2005, percentage rents earned aggregated $6.6 million, $5.3 million, and $3.2 million, respectively.

EARNINGS PER COMMON SHARE. We compute earnings per common share using the weighted average number of shares outstanding during the period. We have no common share equivalents, instruments convertible into common shares or other dilutive instruments.

USE OF ESTIMATES. Accounting principles generally accepted in the United States requires us to make estimates and assumptions that may affect the amounts reported in these financial statements and related notes. The actual results could differ from these estimates.

INCOME TAXES. We operate in a manner to qualify as a real estate investment trust under the Internal Revenue Code of 1986, as amended. Accordingly, we do not expect to be subject to federal income taxes if we continue to distribute our taxable income and continue to meet the other requirements for qualifying as a real estate investment trust. However, we are subject to some state and local taxes on our income and property.

SEGMENT REPORTING. As of December 31, 2007, we have two operating segments. The first operating segment provides short term and long term residential facilities that offer dining for residents. Properties in this segment include independent living facilities, assisted living facilities, skilled nursing facilities and rehabilitation hospitals. The second operating segment provides specialized facilities that offer fitness, wellness and spa services to members. All of our facilities are operated by others under long term leases with the Company. Prior to October 2007, our only operating segment was short and long term residential facilities that offer dining for residents.

RECLASSIFICATIONS. Reclassifications have been made to the prior years’ financial statements to conform to the current year’s presentation.

NEW ACCOUNTING PRONOUNCEMENTS. In September 2006, the Financial Accounting Standards Board, or FASB, issued Statement of Financial Accounting Standards No. 157, “Fair Value Measurement”, or SFAS No. 157, which defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurement. This statement is effective for financial statements issued for fiscal years beginning after November 15, 2007. We are currently evaluating the effect that the adoption of SFAS No. 157 will have on our consolidated financial statements; however, we do not anticipate the effect, if any, will be material.

In February 2007, the FASB issued Statement of Financial Accounting Standards No. 159, “The Fair Value Option for Financial Assets and Financial Liabilities”, or SFAS No. 159, which permits entities to choose to measure many financial assets and financial liabilities at fair value. Unrealized gains and losses on items for which the fair value option has been elected are reported in earnings. SFAS No. 159 is effective for fiscal years beginning after November 15, 2007. We are currently evaluating the effect that the adoption of SFAS No. 159 will have on our consolidated financial statements; however, we do not anticipate the effect, if any, will be material.

F-9

SENIOR HOUSING PROPERTIES TRUST

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In June 2006, the FASB issued Interpretation No. 48 “Accounting for Uncertainty in Income Taxes”, or FIN 48. FIN 48 prescribes how we should recognize, measure and present in our financial statements uncertain tax positions that have been taken or are expected to be taken in a tax return. Pursuant to FIN 48, we can recognize a tax benefit only if it is “more likely than not” that a particular tax position will be sustained upon examination or audit. To the extent the “more likely than not” standard has been satisfied, the benefit associated with a tax position is measured as the largest amount that has a greater than 50% likelihood of being realized upon settlement. As required, we adopted FIN 48 effective January 1, 2007 and have concluded that the effect is not material to our consolidated financial statements. Accordingly, we did not record a cumulative effect adjustment related to the adoption of FIN 48. We classify interest and penalties related to uncertain tax positions, if any, in our financial statements as a component of general and administrative expense.

Note 3. Real Estate Properties

We generally lease our properties on a triple net basis, pursuant to noncancelable, fixed term, operating leases expiring between 2010 and 2026. Some leases to a single tenant or group of affiliated tenants are cross defaulted or cross guaranteed and provide for all or none tenant renewal options at existing or market rent rates. These triple net leases generally require the lessee to pay all property operating costs. The undepreciated cost, after impairment write downs, of our real estate was $1.9 billion and $1.8 billion at December 31, 2007 and 2006, respectively. The future minimum lease payments due to us during the current terms of our leases as of December 31, 2007, are $187.2 million in 2008, $187.6 million in 2009, $187.9 million in 2010, $187.0 million in 2011, $187.4 million in 2012 and $1.2 billion, thereafter.

In October and November 2007, we purchased six wellness centers for a total purchase price of $76.8 million from an unaffiliated third party. Affiliates of Starmark Holdings, LLC lease these wellness centers under three separate leases. These leases have a current term expiring in 2023, plus renewal options, and require aggregate annual rent of $6.5 million initially, plus CPI based increases. We funded this acquisition using cash on hand, borrowings under our revolving credit facility and by assuming a mortgage on two centers for $14.9 million at 6.91% per annum which matures in 2013.

During 2007, we recorded an impairment charge of $1.4 million related to one property that we intend to sell in 2008 to reduce the carrying value of this asset held for sale to its estimated fair value, less costs to sell, of $2.9 million.

During 2006, we entered into a new lease with HealthQuest, Inc., or HealthQuest, for three senior living properties in South Dakota operated by HealthQuest. The new lease expires in 2016 and has one ten year renewal option. The rent payable to us averages $1.3 million per year during the initial lease term; although it commenced at $1.2 million per year and then increases during the lease term. Other lease terms are substantially the same as those in our prior lease with this tenant.

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SENIOR HOUSING PROPERTIES TRUST

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

During 2006, we purchased, from unaffiliated third parties, eleven senior living properties with a total of 1,344 living units for $107.4 million. A majority of the revenues at these properties are paid by residents from their private resources. We added these leases to our combined lease with Five Star which has a current term expiring in 2020. The annual rent under this combined lease increased by $9.0 million, as a result of these acquisitions. Percentage rent based on increases in gross revenues at these properties will commence in 2008.

At December 31, 2007, we classified two of our properties as held for sale as we intend to sell them in 2008. These two properties are included in real estate properties on our consolidated balance sheet. These two properties have a carrying value of $9.5 million and $10.9 million at December 31, 2007 and 2006, respectively. During 2007, we recorded an impairment charge of $1.4 million related to one of these properties to reduce the carrying value to its estimated fair value, less costs to sell.

During 2006, we sold three skilled nursing facilities that were held for sale. We recorded an impairment charge of $1.4 million to reduce the carrying value of these assets held for sale to their estimated fair values, less costs to sell, of $6.9 million.

During 2007 and 2006, pursuant to the terms of our leases with Five Star, we purchased approximately $47.7 million and $23.7 million, respectively, of improvements made to our properties which are leased by Five Star and the annual rent payable to us by Five Star was increased by approximately $4.5 million and $2.4 million, respectively.

Note 4. Shareholders’ Equity

We have common shares available for issuance under the terms of our 1999 Incentive Share Award Plan and our 2003 Incentive Share Award Plan, collectively referred to as the Award Plans. We awarded 38,400 common shares with an aggregate market value of $848,000, 43,400 common shares with an aggregate market value of $941,000 and 24,300 common shares with an aggregate market value of $471,000 to our officers and certain employees of our manager pursuant to the Award Plans during the years ended December 31, 2007, 2006 and 2005, respectively. In addition, we awarded each of our trustees 1,500 common shares in 2007 and 2006 with an aggregate market value of $175,000 ($35,000 to each trustee) and $132,000 ($26,000 to each trustee), respectively, and each of our independent trustees 1,000 common shares with an aggregate market value of $53,000 ($18,000 to each trustee) pursuant to the Award Plans during the year ended December 31, 2005, as part of their annual fees. Shares awarded to the trustees vest immediately. The shares awarded to our officers and certain employees of our manager vest in three or five annual installments beginning on the date of grant. At December 31, 2007, 2,709,840 of our common shares remain available for issuance under the Award Plans. All share awards are fully expensed as the grants vest. We recorded share-based compensation expense related to award grants of $719,000 in 2007 and 2006 and $478,000 in 2005.

Our cash distributions to our common shareholders for the years ended December 31, 2007, 2006 and 2005, were $1.37 per share, $1.30 per share, and $1.28 per share, respectively. The characterization of the distributions made in 2007, 2006 and 2005 was 79.85%, 59.51%, and 59.53% ordinary income, respectively; 20.15%, 40.49%, and 35.59% return of capital, respectively; 0%, 0%, and 4.88% capital gain, respectively; and 0%, 0%, and 0%, uncaptured Section 1250 gain, respectively.

In November 2006, we issued 5.75 million of our common shares in a public offering, raising net proceeds of $120.8 million. On February 7, 2007, we issued 6.0 million of our common shares in a public offering, raising net proceeds of $151.6 million. On December 12, 2007, we issued 5.0 million of our common shares in a public offering, raising net proceeds of $108.8 million. In February 2008, we issued 6.2 million of our common shares in a public offering, raising net proceeds of $129.3 million. We used the net proceeds from these offerings to repay borrowings outstanding on our revolving credit facility and for general business purposes, and use these proceeds in part to fund the pending acquisitions described above.

Note 5. Transactions with Affiliates

Under our agreement with Reit Management & Research LLC, or RMR, RMR originates and presents investment opportunities to our board and provides management and administrative services to us. This agreement is subject to

F-11

SENIOR HOUSING PROPERTIES TRUST

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

annual renewal by our independent trustees. RMR is beneficially owned by Barry M. Portnoy, one of our managing trustees, and his son Adam Portnoy. Adam Portnoy is the President, Chief Executive Officer and a director of RMR, as well as another of our managing trustees. RMR is compensated annually based on a formula principally related to the gross amount of our investments in real estate. RMR is also entitled to an annual incentive fee, which is based on a formula and paid in our restricted common shares. Cash fees paid to RMR for the years ended December 31, 2007, 2006 and 2005, were $9.8 million, $9.4 million and $8.9 million, respectively. Incentive fees payable to RMR for the years ended December 31, 2007, 2006 and 2005, were $648,000, $762,000 and $0, respectively. As of December 31, 2007 and 2006, we had unpaid investment advisory and incentive fees owed to RMR of $1.5 million and $1.6 million, respectively.

As of December 31, 2007, we lease 144 senior living communities and two rehabilitation hospitals to our former subsidiary Five Star for annual rent of $131.4 million, plus percentage rents based upon revenue increases at certain communities according to formula. Barry Portnoy, one of our managing trustees, is also a managing director of Five Star. RMR provides management services to both us and Five Star. As described in Note 3 above, we expanded one of our leases with Five Star during 2007 and 2006 and we currently expect to expand it further in 2008.

As discussed in Note 3 above, during 2007 and 2006 we purchased approximately $47.7 million and $23.7 million, respectively, of improvements to our properties leased by Five Star and the annual rent payable to us by Five Star was increased by approximately $4.5 million and $2.4 million, respectively. Also, during 2006 we purchased 11 properties and leased them to Five Star. We also sold three properties previously leased to Five Star. As of December 31, 2007 and 2006, rent due from Five Star was $10.6 million and $10.0 million, respectively

Note 6. Indebtedness

We have an unsecured revolving credit facility that matures in December 2010, with an option to extend the maturity by one additional year upon payment of a fee. Our revolving credit facility permits borrowings up to $550.0 million. The annual interest payable for amounts drawn under the facility is LIBOR plus 0.80%. In certain circumstances, the amount of unsecured borrowings available under this facility may be increased to $1.1 billion. Our revolving credit facility contains financial covenants and requires us to maintain financial ratios and a minimum net worth. We were in compliance with these covenants during the periods presented. We can borrow, repay and reborrow until maturity, and no principal repayment is due until maturity. The interest rate on borrowings under our revolving credit facility was 5.4% and 6.15% at December 31, 2007 and 2006, respectively. Our revolving credit facility is available for acquisitions, working capital and general business purposes. At December 31, 2007, there were no amounts outstanding and $550.0 million was available for borrowing under this revolving credit facility.

At December 31, 2007 and 2006, our additional outstanding debt consisted of the following (dollars in thousands):

				December 31, 2007				December 31, 2006
Unsecured Debt	Coupon		Maturity	Face Amount		Unamortized Discount		Face Amount		Unamortized Discount
Senior notes	8.625	%	2012	$	225,000	$	512	$	245,000	$	696
Senior notes	7.875	%	2015	97,500		115		97,500		131
Total unsecured debt				$	322,500	$	627	$	342,500	$	827

	Balance as of December 31,										Net Book Value of Collateral
Secured and Other Debt	2007		2006		Interest Rate		Maturity	Number of Properties as Collateral	Initial Cost of Collateral		2007		2006
Mortgages	$	34,889	$	35,788	6.97	%	Jun 2012	16	$	70,114	$	66,920	$	67,049
Mortgages	11,978		12,214		6.11	%	Nov 2013	4	17,034		15,520		15,493
Mortgage	12,605		12,911		7.15	%	Jun 2008	1	20,290		19,994		20,185
Mortgage	15,283		—		6.91	%	Dec 2013	2	36,359		36,278		—
Bonds	14,700		14,700		5.875	%	Dec 2027	1	34,307		29,851		30,154
Capital leases	15,524		15,799		7.7	%	May 2016	2	28,601		23,382		24,973
Total secured	$	104,979	$	91,412					$	206,705	$	191,945	$	157,854

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SENIOR HOUSING PROPERTIES TRUST

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

We include amortization of capital lease assets in depreciation expense. Assets recorded under capital leases had a carrying value of $15.5 million and $15.8 million at December 31, 2007 and 2006, respectively.

In January 2007, we purchased and retired $20.0 million of our 8 5/8% senior notes due in 2012 and recognized a loss on early extinguishment of debt of $2.0 million. The loss on early extinguishment of debt includes a $1.8 million premium and a $276,000 write off of deferred financing fees and unamortized discounts related to these senior notes. We funded this purchase with borrowings under our revolving credit facility. During 2006, we redeemed $52.5 million of our 7 7/8% senior unsecured notes. As a result, we recognized a loss on early extinguishment of debt of $5.2 million, which included a $4.1 million redemption premium and a $1.1 million write off of deferred financing fees and unamortized discount related to these notes in 2006. Also in 2006, we redeemed all $28.2 million of our junior subordinated debentures at par plus accrued but unpaid interest. As a result, we recognized a loss on early extinguishment of debt of $1.3 million of unamortized deferred financing fees related to these debentures.

Interest on our unsecured senior notes and our bonds is payable semi-annually in arrears; however, no principal repayments are due until maturity. Our monthly payments on our mortgages due 2008, 2012 and 2013 include principal and interest. We assumed the mortgages due 2008 and 2013 in connection with acquisitions in 2006 and 2007, respectively. Payments under our capital leases are due monthly.

Required principal payments on our outstanding debt as of December 31, 2007, are as follows (dollars in thousands):

2008	$	14,371
2009	1,893
2010	2,019
2011	2,155
2012	256,764
Thereafter	150,277

Note 7. Fair Value of Financial Instruments and Commitments

The consolidated balance sheet presents various financial instruments including rents receivable, restricted cash, investments in securities, senior notes, mortgages payable and other liabilities. The fair values of the financial instruments were not materially different from their carrying values at December 31, 2007 and 2006, except as follows (dollars in thousands):

	2007				2006
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Senior notes	$	321,873	$	363,105	$	341,673	$	365,206

We estimate the fair values of our senior notes using discounted cash flow analysis and currently prevailing interest rates.

Note 8. Concentration of Credit Risk

The assets included in these financial statements are primarily income producing healthcare and senior housing real estate located throughout the United States. The following is a summary of the significant lessees as of and for the years ended December 31, 2007 and 2006 (dollars in thousands):

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SENIOR HOUSING PROPERTIES TRUST

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

	At December 31, 2007				At December 31, 2006
	Investment(1)		% of Total		Investments(1)		% of Total
Five Star	$	1,337,354	69	%	$	1,291,024	71	%
Sunrise Senior Living, Inc.(2)	325,165		17	%	325,473		18	%
All others	277,828		14	%	197,861		11	%
	$	1,940,347	100	%	$	1,814,358	100	%

	Year Ended December 31, 2007				Year Ended December 31, 2006
	Revenue		% of Total		Revenue		% of Total
Five Star	$	128,292	69	%	$	123,155	67	%
Sunrise Senior Living, Inc.(2)	32,457		17	%	31,525		19	%
All others	25,187		14	%	23,692		14	%
	$	185,936	100	%	$	178,372	100	%

(1) At historical cost after impairment losses and exclusive of depreciation.

(2) Sunrise’s lease is guaranteed by Marriott International, Inc.

Note 9. Segment Reporting

We have one reportable operating segment: short term and long term residential facilities that offer dining for residents. Properties in this segment include independent living facilities, assisted living facilities, skilled nursing facilities and rehabilitation hospitals. The “All Other” category in the following table includes amounts related to corporate business activities and the operating results of our specialized facilities that offer fitness, wellness and spa service to members operating segment.

	For the twelve months ended December 31, 2007
	Short and Long Term Residential Facilities		All Other			Consolidated
Rental income	$	185,077	$	859		$	185,936
Interest and other income	—		2,086			2,086
Total revenues	185,077		2,945			188,022

Interest expense	5,885		31,870			37,755
Depreciation and amortization expense	47,118		266			47,384
General and administrative expense	—		14,154			14,154
Loss on early extinguishment of debt	—		2,026			2,026
Loss on asset impairment	1,400		—			1,400
Total expenses	54,403		48,316			102,719

Net income (loss)	$	130,674	$	(45,371	)	$	85,303

Total assets	$	1,548,138	$	153,756		$	1,701,894

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SENIOR HOUSING PROPERTIES TRUST

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 10. Selected Quarterly Financial Data (unaudited)

The following is a summary of our unaudited quarterly results of operations for 2007 and 2006 (dollars in thousands, except per share amounts):

	2007
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Revenues	$	44,752	$	44,962	$	45,224	$	53,084
Net income	17,522		20,649		20,613		26,519
Per share data:
Net income	$	0.22	$	0.25	$	0.25	$	0.31

	2006
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Revenues	$	41,169	$	41,276	$	42,317	$	55,044
Income before loss on sale of properties	10,460		12,686		15,418		27,558
Net income	10,460		12,686		15,418		27,537
Per share data:
Income before loss on sale of properties	$	0.15	$	0.18	$	0.21	$	0.37
Net income	$	0.15	$	0.18	$	0.21	$	0.37

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SCHEDULE III

REAL ESTATE AND ACCUMULATED DEPRECIATION

December 31, 2007

(Dollars in thousands)

		Initial Cost to Company									Cost amount at December 31, 2007
Location	State		Land		Building & Equipment		Costs Capitalized Subsequent to Acquisition		Impairment		Land		Building & Equipment		(1) Total		(2) Accumulated Depreciation		(3) Date Acquired	Original Construction Date
Cullman (4)	AL		$	287	$	3,415	$	264			$	287	$	3,679	$	3,966	$	315	11/19/2004	1998
Madison (4)	AL		334		3,981		303				334		4,284		4,618		364		11/19/2004	1998
Sheffield (4)	AL		394		4,684		216				394		4,900		5,294		412		11/19/2004	1998
Peoria	AZ		2,687		15,843		1,073				2,687		16,916		19,603		2,851		1/11/2002	1990
Scottsdale	AZ		2,315		13,650		1,428				2,315		15,078		17,393		2,489		1/11/2002	1984
Scottsdale	AZ		941		8,807		129				941		8,936		9,877		3,043		5/16/1994	1990
Sun City	AZ		1,189		10,569		158				1,189		10,727		11,916		3,631		6/17/1994	1990
Sun City West	AZ		395		3,307		—				395		3,307		3,702		458		2/28/2003	1998
Tucson	AZ		4,429		26,119		1,815				4,429		27,934		32,363		4,717		1/11/2002	1989
Yuma	AZ		223		2,100		1,675				223		3,775		3,998		1,022		6/30/1992	1984
Yuma	AZ		103		604		156				103		760		863		280		6/30/1992	1984
Fresno	CA		738		2,577		188				738		2,765		3,503		1,294		12/28/1990	1963
Laguna Hills	CA		3,172		28,184		435				3,172		28,619		31,791		9,511		9/9/1994	1975
Lancaster	CA		601		1,859		1,729				601		3,588		4,189		1,393		12/28/1990	1969
San Bernardino	CA		1,250		9,069		404				1,250		9,473		10,723		346		8/31/2006	1988
San Diego	CA		9,142		53,904		2,798				9,142		56,702		65,844		9,363		1/11/2002	1987
Stockton	CA		382		2,750		466				382		3,216		3,598		1,281		6/30/1992	1968
Stockton	CA		1,176		11,171		985				1,176		12,156		13,332		1,509		9/30/2003	1988
Thousand Oaks	CA		622		2,522		1,106				622		3,628		4,250		1,452		12/28/1990	1965
Van Nuys	CA		718		378		564				718		942		1,660		367		12/28/1990	1969
Canon City	CO		292		6,228		943		(3,512	)	292		3,659		3,951		688		9/26/1997	1970
Colorado Springs	CO		245		5,236		977		(3,031	)	245		3,182		3,427		624		9/26/1997	1972
Delta	CO		167		3,570		700				167		4,270		4,437		1,072		9/26/1997	1963
Grand Junction	CO		204		3,875		1,078				204		4,953		5,157		1,862		12/30/1993	1968
Grand Junction	CO		173		2,583		1,911				173		4,494		4,667		1,594		12/30/1993	1978
Lakewood	CO		232		3,766		1,636				232		5,402		5,634		2,134		12/28/1990	1972
Littleton	CO		185		5,043		1,617				185		6,660		6,845		2,633		12/28/1990	1965
Littleton	CO		400		3,507		—				400		3,507		3,907		485		2/28/2003	1998
Newark	DE		2,010		11,852		1,013				2,010		12,865		14,875		2,176		1/11/2002	1982
Wilmington	DE		4,365		25,739		919				4,365		26,658		31,023		4,529		1/11/2002	1988

S-1

SENIOR HOUSING PROPERTIES TRUST

SCHEDULE III

REAL ESTATE AND ACCUMULATED DEPRECIATION

December 31, 2007

(Dollars in thousands)

		Initial Cost to Company					Cost amount at December 31, 2007
Location	State		Land	Building & Equipment	Costs Capitalized Subsequent to Acquisition	Impairment	Land	Building & Equipment	(1) Total	(2) Accumulated Depreciation	(3) Date Acquired	Original Construction Date
Wilmington	DE		1,179	6,950	585		1,179	7,535	8,714	1,288	1/11/2002	1974
Wilmington	DE		38	227	335		38	562	600	114	1/11/2002	1965
Wilmington	DE		869	5,126	1,167		869	6,293	7,162	1,120	1/11/2002	1989
Boca Raton	FL		4,166	39,633	729		4,166	40,362	44,528	13,745	5/20/1994	1994
Cape Coral	FL		400	2,907	—		400	2,907	3,307	403	2/28/2003	1998
Coral Springs	FL		3,410	20,104	2,489		3,410	22,593	26,003	3,619	1/11/2002	1984
Deerfield Beach	FL		3,196	18,848	2,198		3,196	21,046	24,242	3,426	1/11/2002	1990
Deerfield Beach	FL		1,690	14,972	273		1,690	15,245	16,935	5,192	5/16/1994	1986
Fort Myers	FL		369	2,174	524		369	2,698	3,067	431	1/11/2002	1990
Fort Myers	FL		2,385	21,137	383		2,385	21,520	23,905	7,196	8/16/1994	1984
Naples	FL		3,200	2,898	5,801		3,200	8,699	11,899	154	8/31/2006	1984
Palm Harbor	FL		3,449	20,336	1,591		3,449	21,927	25,376	3,630	1/11/2002	1989
Palm Harbor	FL		3,379	29,945	539		3,379	30,484	33,863	10,382	5/16/1994	1992
Pompano Beach	FL		7,700	2,127	20,431		7,700	22,558	30,258	812	8/31/2006	1985
Port St. Lucie	FL		1,242	11,009	200		1,242	11,209	12,451	3,817	5/20/1994	1993
Tampa	FL		4,850	6,349	—		4,850	6,349	11,199	33	10/30/2007	1986
West Palm Beach	FL		2,061	12,153	3,585		2,061	15,738	17,799	2,402	1/11/2002	1988
Athens	GA		337	4,006	108		337	4,114	4,451	349	11/19/2004	1998
Atlanta (4)	GA		5,800	9,305	—		5,800	9,305	15,105	29	11/30/2007	1978
College Park	GA		300	2,702	788		300	3,490	3,790	1,065	5/15/1996	1985
Columbus	GA		294	3,505	101		294	3,606	3,900	307	11/19/2004	1999
Conyers	GA		342	4,068	270		342	4,338	4,680	360	11/19/2004	1997
Dalton	GA		262	3,119	124		262	3,243	3,505	270	11/19/2004	1997
Dublin	GA		442	3,982	809		442	4,791	5,233	1,506	5/15/1996	1968
Evans	GA		230	2,663	217		230	2,880	3,110	243	11/19/2004	1998
Gainesville (4)	GA		268	3,186	151		268	3,337	3,605	284	11/19/2004	1998
Macon (4)	GA		183	2,179	186		183	2,365	2,548	205	11/19/2004	1998
Marietta	GA		300	2,702	610		300	3,312	3,612	1,040	5/15/1996	1967
Savannah (4)	GA		1,200	19,090	319		1,200	19,409	20,609	615	10/1/2006	1987
Savannah	GA		400	5,630	107		400	5,737	6,137	208	11/1/2006	1989

S-2

SENIOR HOUSING PROPERTIES TRUST

SCHEDULE III

REAL ESTATE AND ACCUMULATED DEPRECIATION

December 31, 2007

(Dollars in thousands)

		Initial Cost to Company					Cost amount at December 31, 2007
Location	State		Land	Building & Equipment	Costs Capitalized Subsequent to Acquisition	Impairment	Land	Building & Equipment	(1) Total	(2) Accumulated Depreciation	(3) Date Acquired	Original Construction Date
Tucker	GA		690	6,210	286		690	6,496	7,186	457	6/3/2005	1997
Clarinda	IA		77	1,453	762		77	2,215	2,292	850	12/30/1993	1968
Council Bluffs	IA		225	893	660		225	1,553	1,778	530	4/1/1995	1963
Des Moines	IA		123	627	528		123	1,155	1,278	241	7/1/2000	1965
Glenwood	IA		322	2,098	773		322	2,871	3,193	602	7/1/2000	1964
Mediapolis	IA		94	1,776	678		94	2,454	2,548	924	12/30/1993	1973
Pacific Junction	IA		32	306	85		32	391	423	117	4/1/1995	1978
Winterset	IA		111	2,099	977		111	3,076	3,187	1,143	12/30/1993	1973
Arlington Heights	IL		3,665	32,587	490		3,665	33,077	36,742	10,993	9/9/1994	1986
Springfield	IL		300	6,744	159		300	6,903	7,203	243	8/31/2006	1990
Indianapolis	IN		2,785	16,396	1,368		2,785	17,764	20,549	2,973	1/11/2002	1986
South Bend	IN		400	3,107	—		400	3,107	3,507	430	2/28/2003	1998
Ellinwood	KS		130	1,137	467		130	1,604	1,734	466	4/1/1995	1972
Overland Park	KS		1,274	11,426	1,485		1,274	12,911	14,185	1,818	10/25/2002	1985
Overland Park	KS		2,568	15,140	1,110		2,568	16,250	18,818	2,716	1/11/2002	1989
Bowling Green (4)	KY		365	4,345	215		365	4,560	4,925	387	11/19/2004	1999
Frankfort	KY		560	8,282	134		560	8,416	8,976	292	8/31/2006	1989
Hopkinsville (4)	KY		316	3,761	67		316	3,828	4,144	327	11/19/2004	1999
Lafayette (5)	KY		—	10,848	10,001		—	20,849	20,849	3,659	1/11/2002	1985
Lexington (5)	KY		—	6,394	1,844		—	8,238	8,238	2,046	1/11/2002	1980
Louisville	KY		3,524	20,779	3,175		3,524	23,954	27,478	3,876	1/11/2002	1984
Mayfield	KY		268	2,730	559		268	3,289	3,557	278	11/19/2004	1999
Paducah (4)	KY		450	5,358	327		450	5,685	6,135	479	11/19/2004	2000
Somerset	KY		200	4,919	60		200	4,979	5,179	139	11/6/2006	2000
Braintree	MA		3,193	16,652	2,166		3,193	18,818	22,011	6,348	1/1/2002	1975
Winchester	MA		3,218	18,988	1,493		3,218	20,481	23,699	3,385	1/11/2002	1991
Woburn	MA		3,809	19,862	2,215		3,809	22,077	25,886	7,563	1/1/2002	1969
Bel Air (4)	MD		4,750	16,504	—		4,750	16,504	21,254	52	11/30/2007	1980
Bowie	MD		408	3,421	278		408	3,699	4,107	542	10/25/2002	2000
Easton	MD		383	4,555	257		383	4,812	5,195	711	10/25/2002	2000

S-3

SENIOR HOUSING PROPERTIES TRUST

SCHEDULE III

REAL ESTATE AND ACCUMULATED DEPRECIATION

December 31, 2007

(Dollars in thousands)

		Initial Cost to Company						Cost amount at December 31, 2007
Location	State		Land	Building & Equipment	Costs Capitalized Subsequent to Acquisition	Impairment		Land	Building & Equipment	(1) Total	(2) Accumulated Depreciation	(3) Date Acquired	Original Construction Date
Ellicott City	MD		1,409	22,691	4,849			1,409	27,540	28,949	2,568	3/1/2004	1997
Frederick	MD		385	3,444	347			385	3,791	4,176	553	10/25/2002	1998
Severna Park	MD		229	9,798	483			229	10,281	10,510	1,511	10/25/2002	1998
Silver Spring	MD		1,200	9,288	5,703			1,200	14,991	16,191	1,648	10/25/2002	1996
Silver Spring	MD		3,301	29,065	714			3,301	29,779	33,080	10,019	7/25/1994	1992
Hampton	MI		300	2,406	—			300	2,406	2,706	333	2/28/2003	1998
Midland	MI		300	2,206	—			300	2,206	2,506	306	2/28/2003	1998
Monroe	MI		400	2,606	—			400	2,606	3,006	364	2/28/2003	1998
Portage	MI		600	5,212	—			600	5,212	5,812	721	2/28/2003	1998
Saginaw	MI		300	2,506	—			300	2,506	2,806	349	2/28/2003	1998
Eagan	MN		400	2,506	—			400	2,506	2,906	388	2/28/2003	1998
West St. Paul	MN		400	3,608	100			400	3,708	4,108	566	2/28/2003	1998
St. Joseph	MO		111	1,027	1,242			111	2,269	2,380	579	6/4/1993	1976
Tarkio	MO		102	1,938	750			102	2,688	2,790	1,020	12/30/1993	1970
Oxford	MS		450	5,791	162			450	5,953	6,403	176	10/1/2006	2000
Southaven	MS		450	5,795	136			450	5,931	6,381	176	10/1/2006	2000
Cary	NC		713	4,628	1,244			713	5,872	6,585	843	10/25/2002	1999
Chapel Hill	NC		800	6,414	—			800	6,414	7,214	888	2/28/2003	1996
Ainsworth	NE		25	420	458			25	878	903	213	7/1/2000	1966
Ashland	NE		28	1,823	867			28	2,690	2,718	549	7/1/2000	1965
Blue Hill	NE		56	1,064	740			56	1,804	1,860	322	7/1/2000	1967
Central City	NE		21	919	601			21	1,520	1,541	316	7/1/2000	1969
Columbus	NE		88	561	417			88	978	1,066	197	7/1/2000	1955
Edgar	NE		1	138	392			1	530	531	97	7/1/2000	1971
Exeter	NE		4	626	325			4	951	955	203	7/1/2000	1965
Grand Island	NE		119	1,446	952			119	2,398	2,517	695	4/1/1995	1963
Gretna	NE		237	673	641	(29	)	237	1,285	1,522	270	7/1/2000	1972
Lyons	NE		13	797	726			13	1,523	1,536	286	7/1/2000	1969
Milford	NE		24	880	544			24	1,424	1,448	310	7/1/2000	1967
Omaha	NE		650	5,850	182			650	6,032	6,682	421	6/3/2005	1992

S-4

SENIOR HOUSING PROPERTIES TRUST

SCHEDULE III

REAL ESTATE AND ACCUMULATED DEPRECIATION

December 31, 2007

(Dollars in thousands)

		Initial Cost to Company						Cost amount at December 31, 2007
Location	State		Land	Building & Equipment	Costs Capitalized Subsequent to Acquisition	Impairment		Land	Building & Equipment	(1) Total	(2) Accumulated Depreciation	(3) Date Acquired	Original Construction Date
Sutherland	NE		19	1,251	353			19	1,604	1,623	351	7/1/2000	1970
Utica	NE		21	569	407			21	976	997	181	7/1/2000	1966
Waverly	NE		529	686	515			529	1,201	1,730	283	7/1/2000	1989
Burlington	NJ		1,300	11,700	7			1,300	11,707	13,007	3,586	9/29/1995	1994
Cherry Hill	NJ		1,001	8,175	—			1,001	8,175	9,176	826	12/29/2003	1999
Lakewood (6)	NJ		4,885	28,803	1,180			4,885	29,983	34,868	5,017	1/11/2002	1987
Mt. Arlington	NJ		1,375	11,232	—			1,375	11,232	12,607	1,135	12/29/2003	2001
Voorhees	NJ		1,001	8,177	—			1,001	8,177	9,178	826	12/29/2003	1998
Washington Twp.	NJ		1,001	8,177	—			1,001	8,177	9,178	826	12/29/2003	1999
Albuquerque	NM		3,828	22,572	1,046			3,828	23,618	27,446	3,950	1/11/2002	1986
Albuquerque	NM		540	10,105	—			540	10,105	10,645	53	10/30/2007	1977
Albuquerque	NM		1,660	9,173	—			1,660	9,173	10,833	48	10/30/2007	1983
Albuquerque	NM		1,060	9,875	—			1,060	9,875	10,935	51	10/30/2007	1973
Columbus	OH		3,623	27,778	2,850			3,623	30,628	34,251	4,900	1/11/2002	1989
Grove City	OH		332	3,081	791			332	3,872	4,204	1,194	6/4/1993	1965
Beaver Falls	PA		1,500	13,500	200			1,500	13,700	15,200	851	10/31/2005	1997
Canonsburg	PA		1,518	13,493	587			1,518	14,080	15,598	10,229	3/1/1991	1985
Clarks Summit	PA		1,001	8,233	—			1,001	8,233	9,234	832	12/29/2003	2001
Devon	PA		550	4,536	—			550	4,536	5,086	458	12/29/2003	2001
Elizabeth	PA		696	6,304	229			696	6,533	7,229	412	10/31/2005	1986
Exton	PA		1,001	8,233	—			1,001	8,233	9,234	832	12/29/2003	2000
Glen Mills	PA		1,001	8,233	—			1,001	8,233	9,234	841	12/29/2003	2001
Murrysville	PA		300	2,506	—			300	2,506	2,806	383	2/28/2003	1998
New Britain	PA		979	8,052	—			979	8,052	9,031	814	12/29/2003	1998
Penn Hills	PA		200	904	—			200	904	1,104	139	2/28/2003	1997
Pittsburgh	PA		644	5,856	496			644	6,352	6,996	386	10/31/2005	1987
Pittsburgh	PA		446	4,054	105	(1,400	)	446	2,759	3,205	265	10/31/2005	1987
South Park	PA		898	8,102	145			898	8,247	9,145	518	10/31/2005	1995
Kingston	PA		—	5,682	—			—	5,682	5,682	568	12/29/2003	1997
Whitehall	PA		1,599	14,401	861			1,599	15,262	16,861	925	10/31/2005	1987

S-5

SENIOR HOUSING PROPERTIES TRUST

SCHEDULE III

REAL ESTATE AND ACCUMULATED DEPRECIATION

December 31, 2007

(Dollars in thousands)

		Initial Cost to Company					Cost amount at December 31, 2007
Location	State		Land	Building & Equipment	Costs Capitalized Subsequent to Acquisition	Impairment	Land	Building & Equipment	(1) Total	(2) Accumulated Depreciation	(3) Date Acquired	Original Construction Date
Anderson	SC		295	3,509	76		295	3,585	3,880	302	11/19/2004	1999
Beaufort (4)	SC		188	2,234	517		188	2,751	2,939	229	11/19/2004	1999
Camden (4)	SC		322	3,697	713		322	4,410	4,732	362	11/19/2004	1999
Columbia	SC		300	1,905	—		300	1,905	2,205	264	2/28/2003	1998
Greenwood	SC		310	2,701	231		310	2,932	3,242	202	6/3/2005	1999
Hartsville (4)	SC		401	4,775	439		401	5,214	5,615	427	11/19/2004	1999
Lexington (4)	SC		363	4,322	269		363	4,591	4,954	386	11/19/2004	1999
Myrtle Beach	SC		543	3,202	804		543	4,006	4,549	639	1/11/2002	1980
Orangeburg (4)	SC		303	3,607	576		303	4,183	4,486	334	11/19/2004	1999
Rock Hill	SC		300	1,705	—		300	1,705	2,005	254	2/28/2003	1998
Seneca (4)	SC		396	4,714	190		396	4,904	5,300	412	11/19/2004	2000
Huron	SD		144	3,108	4		144	3,112	3,256	1,305	6/30/1992	1968
Huron	SD		45	968	1		45	969	1,014	406	6/30/1992	1968
Sioux Falls	SD		253	3,062	4		253	3,066	3,319	1,289	6/30/1992	1960
Clarksville	TN		320	2,994	351		320	3,345	3,665	83	12/31/2006	1997
Cleveland (4)	TN		305	3,627	414		305	4,041	4,346	332	11/19/2004	1998
Cookeville (4)	TN		322	3,828	253		322	4,081	4,403	340	11/19/2004	1998
Franklin (4)	TN		322	3,833	97		322	3,930	4,252	332	11/19/2004	1997
Gallatin	TN		280	3,327	215		280	3,542	3,822	294	11/19/2004	1998
Goodlettsville	TN		300	3,207	100		300	3,307	3,607	458	2/28/2003	1998
Jackson (4)	TN		295	3,506	163		295	3,669	3,964	307	11/19/2004	1999
Knoxville (4)	TN		304	3,618	536		304	4,154	4,458	331	11/19/2004	1998
Maryville	TN		400	3,507	—		400	3,507	3,907	485	2/28/2003	1998
Nashville	TN		750	6,750	747		750	7,497	8,247	503	6/3/2005	1979
Bellaire	TX		1,238	11,010	162		1,238	11,172	12,410	3,805	5/16/1994	1991
Dallas	TX		4,709	27,768	2,726		4,709	30,494	35,203	5,030	1/11/2002	1990
El Paso	TX		2,301	13,567	730		2,301	14,297	16,598	2,418	1/11/2002	1987
Houston	TX		5,537	32,647	3,410		5,537	36,057	41,594	5,822	1/11/2002	1989
San Antonio	TX		4,283	25,256	1,668		4,283	26,924	31,207	4,480	1/11/2002	1989
Woodlands	TX		3,694	21,782	2,367		3,694	24,149	27,843	3,999	1/11/2002	1988

S-6

SENIOR HOUSING PROPERTIES TRUST

SCHEDULE III

REAL ESTATE AND ACCUMULATED DEPRECIATION

December 31, 2007

(Dollars in thousands)

		Initial Cost to Company										Cost amount at December 31, 2007
Location	State		Land		Building & Equipment		Costs Capitalized Subsequent to Acquisition		Impairment			Land		Building & Equipment		(1) Total		(2) Accumulated Depreciation		(3) Date Acquired	Original Construction Date
Arlington	VA		1,885		16,734		270					1,885		17,004		18,889		5,721		7/25/1994	1992
Charlottesville	VA		2,976		26,422		431					2,976		26,853		29,829		9,090		6/17/1994	1991
Charlottesville	VA		641		7,633		616					641		8,249		8,890		673		11/19/2004	1998
Chesapeake	VA		160		1,498		335					160		1,833		1,993		233		5/30/2003	1987
Fredericksburg	VA		287		8,480		447					287		8,927		9,214		1,347		10/25/2002	1998
Midlothian	VA		1,103		13,126		122					1,103		13,248		14,351		1,119		11/19/2004	1996
Newport News	VA		581		6,921		118					581		7,039		7,620		594		11/19/2004	1998
Poquoson	VA		220		2,041		193					220		2,234		2,454		292		5/30/2003	1987
Richmond	VA		134		3,191		297					134		3,488		3,622		522		10/25/2002	1998
Richmond	VA		732		8,717		218					732		8,935		9,667		755		11/19/2004	1999
Virginia Beach	VA		893		7,926		129					893		8,055		8,948		2,743		5/16/1994	1990
Williamsburg	VA		270		2,468		498					270		2,966		3,236		348		5/30/2003	1987
Seattle	WA		256		4,869		67					256		4,936		5,192		2,074		11/1/1993	1964
Brookfield	WI		832		3,849		9,098		(6,552		)	832		6,395		7,227		1,991		12/28/1990	1964
Clintonville	WI		30		1,625		289					30		1,914		1,944		842		12/28/1990	1965
Clintonville	WI		14		1,695		525					14		2,220		2,234		868		12/28/1990	1960
Madison	WI		144		1,633		1,594					144		3,227		3,371		899		12/28/1990	1920
Pewaukee	WI		984		2,432		682					984		3,114		4,098		1,216		9/10/1998	1963
Waukesha	WI		68		3,452		2,640					68		6,092		6,160		2,417		12/28/1990	1958
Laramie	WY		191		3,632		623					191		4,255		4,446		1,703		12/30/1993	1964
Worland	WY		136		2,507		931					136		3,438		3,574		1,320		12/30/1993	1970

Total			$	217,236	$	1,563,477	$	174,158	$	(14,524	)	$	217,236	$	1,723,111	$	1,940,347	$	323,891

(1) Aggregate cost for federal income tax purposes is approximately $1.9 billion.

(2) We depreciate buildings and improvements over periods ranging up to 40 years and equipment over periods ranging up to 12 years.

(3) Includes dates acquired by HRPT Properties Trust, our predecessor.

(4) These properties are collateral for our $74.8 million of mortgage notes.

(5) These properties are subject to our $15.5 million of capital leases.

(6) This property is collateral for our $14.7 million of mortgage bonds.

S-7

SENIOR HOUSING PROPERTIES TRUST

SCHEDULE III

REAL ESTATE AND ACCUMULATED DEPRECIATION

December 31, 2007

(Dollars in thousands)

Analysis of the carrying amount of real estate and equipment and accumulated depreciation during the period:



	Real Estate and Equipment	Accumulated Depreciation
Balance at December 31, 2004		$	1,600,952		$	199,232
Additions		97,480			43,694
Disposals		(8,861		)	(2,255		)
Impairment		(3,402		)	(1,640		)
Balance at December 31, 2005		1,686,169			239,031
Additions		143,107			44,073
Disposals		(6,900		)	—
Impairment		(8,018		)	(6,597		)
Balance at December 31, 2006		1,814,358			276,507
Additions		127,389			47,384
Impairment		(1,400		)	—
Balance at December 31, 2007		$	1,940,347		$	323,891

S-8

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	SENIOR HOUSING PROPERTIES TRUST

	By:	/s/ David J. Hegarty
	David J. Hegarty
	President and Chief Operating Officer
	Dated: February 29, 2008

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons, on behalf of the registrant and in the capacities and on the dates indicated.

Signature	Title	Date

/s/ David J. Hegarty	President and Chief Operating Officer	February 29, 2008
David J. Hegarty

/s/ Richard A. Doyle	Treasurer and Chief Financial Officer	February 29, 2008
Richard A. Doyle	(principal financial officer and principal accounting officer)

/s/ Frank J. Bailey	Trustee	February 29, 2008
Frank J. Bailey

/s/ John L. Harrington	Trustee	February 29, 2008
John L. Harrington

/s/ Adam D. Portnoy	Trustee	February 29, 2008
Adam D. Portnoy

/s/ Barry M. Portnoy	Trustee	February 29, 2008
Barry M. Portnoy

/s/ Frederick N. Zeytoonjian	Trustee	February 29, 2008
Frederick N. Zeytoonjian

DIVERSIFIED HEALTHCARE TRUST - Annual Report: 2007 (Form 10-K)

Year Ended December 31, 2007, Compared to Year Ended December 31, 2006

Debt Covenants

Related Person Transactions

We include amortization of capital lease assets in depreciation expense. Assets recorded under capital leases had a carrying value of $15.5 million and $15.8 million at December 31, 2007 and 2006, respectively.

Required principal payments on our outstanding debt as of December 31, 2007, are as follows (dollars in thousands):