NEW ENGLAND REALTY ASSOCIATES LIMITED PARTNERSHIP - Annual Report: 2011 (Form 10-K)

Use these links to rapidly review the document
TABLE OF CONTENTS

Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

Commission file number 001-31568

New England Realty Associates Limited Partnership
(Exact name of registrant as specified in its charter)

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

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

          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 (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o

          Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ý    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 the registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendments to this Form 10-K ý

          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 definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act. (Check one):

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

          At June 30, 2011, the aggregate market value of the registrant's securities held by non-affiliates of the registrant was $48,059,978 based on the closing price of the registrant's traded securities on the NYSE Amex Exchange on such date. For this computation, the Registrant has excluded the market value of all Depositary Receipts reported as beneficially owned by executive officers and directors of the General Partner of the Registrant; such exclusion shall not be deemed to constitute an admission that any such person is an affiliate of the Registrant.

          Effective January 3, 2012, the Partnership authorized a 3-for-1 forward split of its Depositary Receipts listed on the NYSE Amex and a concurrent adjustment of the exchange ratio of Depositary Receipts for Class A Units of the Partnership from 10-to-1 to 30-to-1, such that each Depositary Receipt represents one-thirtieth (¹/30) of a Class A Unit of the Partnership.

          All references to Depositary Receipts in the report are reflective of the 3-for-1 forward split.

          As of March 1, 2012, there were 105,188 of the registrant's Class A units (3,155,628 Depositary Receipts) of limited partnership issued and outstanding and 24,982 Class B units issued and outstanding.

DOCUMENTS INCORPORATED BY REFERENCE: None.

Table of Contents

NEW ENGLAND REALTY ASSOCIATES LIMITED PARTNERSHIP

TABLE OF CONTENTS

Table of Contents

NEW ENGLAND REALTY ASSOCIATES LIMITED PARTNERSHIP

PART I

ITEM 1.    BUSINESS

General

        New England Realty Associates Limited Partnership ("NERA" or the "Partnership"), a Massachusetts Limited Partnership, was formed on August 12, 1977 as the successor to five real estate limited partnerships (collectively, the "Colonial Partnerships"), which filed for protection under Chapter XII of the Federal Bankruptcy Act in September 1974. The bankruptcy proceedings were terminated in late 1984. In July 2004, the General Partner extended the termination date of the Partnership until 2057, as allowed in the Partnership Agreement.

        The authorized capital of the Partnership is represented by three classes of partnership units ("Units"). There are two categories of limited partnership interests ("Class A Units" and "Class B Units") and one category of general partnership interests (the "General Partnership Units"). The Class A Units were initially issued to creditors and limited partners of the Colonial Partnerships and have been registered under Section 12(g) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Each Class A Unit is exchangeable for 30 publicly traded depositary receipts ("Receipts"), which are currently listed on the NYSE Amex Exchange and are registered under Section 12(b) of the Exchange Act. The Class B Units were issued to the original general partners of the Partnership. The General Partnership Units are held by the current general partner of the Partnership, NewReal, Inc. (the "General Partner"). The Class A Units represent an 80% ownership interest, the Class B Units represent a 19% ownership interest, and the General Partnership Units represent a 1% ownership interest.

        The Partnership is engaged in the business of acquiring, developing, holding for investment, operating and selling real estate. The Partnership, directly or through 24 subsidiary limited partnerships or limited liability companies, owns and operates various residential apartment buildings, condominium units and commercial properties located in Massachusetts and New Hampshire. As used herein, the Partnership's subsidiary limited partnerships and limited liabilities companies are each referred to as a "Subsidiary Partnership" and are collectively referred to as the "Subsidiary Partnerships."

        The Partnership owns between a 99.67% and 100% interest in each of the Subsidiary Partnerships, except in nine limited liability companies (the "Investment Properties" or "Joint Ventures") in which the Partnership has between a 40% and 50% ownership interest. The majority shareholder of the General Partner indirectly owns between 43.2% and 57%, the President of Hamilton owns between 2.5% and 4.5%, and five other management employees of Hamilton own collectively between 0% and 2.3%, respectively. The Partnership's interest in the Investment Properties is accounted for on the equity method in the Consolidated Financial Statements. See Note 1 to the Consolidated Financial Statements—"Principles of Consolidation." See Note 14 to the Consolidated Financial Statements—"Investment in Unconsolidated Joint Ventures" for a description of the properties and their operations. Of those Subsidiary Partnerships not wholly owned by the Partnership, except for the Investment Properties, the remaining ownership interest is held by an unaffiliated third party. In each such case, the third party has entered into a lease agreement with the Partnership, pursuant to which any benefit derived from its ownership interest in the applicable Subsidiary Partnerships will be returned to the Partnership.

        The long-term goals of the Partnership are to manage, rent and improve its properties and to acquire additional properties with income and capital appreciation potential as suitable opportunities arise. When appropriate, the Partnership may sell or refinance selected properties. Proceeds from any such sales or refinancing will be used to reduce debt, reinvested in acquisitions of other properties,

1

Table of Contents

distributed to the partners, repurchase equity interests, or used for operating expenses or reserves, as determined by the General Partner.

Operations of the Partnership

        The Partnership is managed by the General Partner, NewReal, Inc., a Massachusetts corporation wholly owned by Harold Brown and Ronald Brown. The General Partner has engaged The Hamilton Company, Inc. (the "Hamilton Company" or "Hamilton") to perform general management functions for the Partnership's properties in exchange for management fees. The Hamilton Company is wholly owned by Harold Brown and employs Ronald Brown and Harold Brown. The Partnership, Subsidiary Partnerships, and the Investment Properties currently contract with the management company for 47 individuals at the Properties and 19 individuals at the Joint Ventures who are primarily involved in the supervision and maintenance of specific properties. The General Partner has no employees.

        As of February 1, 2012, the Partnership and its Subsidiary Partnerships owned 2,251 residential apartment units in 20 residential and mixed-use complexes (collectively, the "Apartment Complexes"). The Partnership also owns 19 condominium units in a residential condominium complex, all of which are leased to residential tenants (collectively referred to as the "Condominium Units"). The Apartment Complexes, the Condominium Units and the Investment Properties are located primarily in the metropolitan Boston area of Massachusetts.

        As of February 1, 2012, the Subsidiary Partnerships also owned a commercial shopping center in Framingham, Massachusetts, one commercial building in Newton and one in Brookline, Massachusetts and commercial space in mixed-use buildings in Boston, Brockton and Newton, Massachusetts. These properties are referred to collectively as the "Commercial Properties." See Note 2 to the Consolidated Financial Statements, included as a part of this Form 10-K.

        Additionally, as of February 1, 2012, the Partnership owned between a 40-50% interest in nine residential and mixed use complexes, the Investment Properties, with a total of 799 residential units, one commercial unit, and a parking lot. See Note 14 to the Consolidated Financial Statements for additional information on these investments.

        The Apartment Complexes, Investment Properties, Condominium Units and Commercial Properties are referred to collectively as the "Properties."

        Harold Brown and, in certain cases, Ronald Brown, and officers and employees of the Hamilton Company own or have owned interests in certain of the Properties, Subsidiary Partnerships and Joint Ventures. See "Item 13. Certain Relationships, Related Transactions and Director Independence."

        The leasing of real estate in the metropolitan Boston area of Massachusetts is highly competitive. The Apartment Complexes, Condominium Units and the Investment Properties must compete for tenants with other residential apartments and condominium units in the areas in which they are located. The Commercial Properties must compete for commercial tenants with other shopping malls and office buildings in the areas in which they are located. Thus, the level of competition at each Property depends on how many other similarly situated properties are in its vicinity. See "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations—Factors that May Affect Future Results."

        The Second Amended and Restated Contract of Limited Partnership of the Partnership (the "Partnership Agreement") authorizes the General Partner to acquire real estate and real estate related investments from or in participation with either or both of Harold Brown and Ronald Brown, or their affiliates, upon the satisfaction of certain terms and conditions, including the approval of the Partnership's Advisory Committee and limitations on the price paid by the Partnership for such investments. The Partnership Agreement also permits the Partnership's limited partners and the General Partner to make loans to the Partnership, subject to certain limitations on the rate of interest

2

Table of Contents

that may be charged to the Partnership. Except for the foregoing, the Partnership does not have any policies prohibiting any limited partner, General Partner or any other person from having any direct or indirect pecuniary interest in any investment to be acquired or disposed of by the Partnership or in any transaction to which the Partnership is a party or has an interest in or from engaging, for their own account, in business activities of the types conducted or to be conducted by the Partnership. The General Partner is not limited in the number or amount of mortgages which may be placed on any Property, nor is there a policy limiting the percentage of Partnership assets which may be invested in any specific Property.

Industry Segments

        The Partnership operates in only one industry segment—real estate. The Partnership does not have any foreign operations, and its business is not seasonal. See the Consolidated Financial Statements attached hereto and incorporated by reference herein for financial information relating to our industry segment.

Unit Distributions

        Effective January 3, 2012, the Partnership authorized a 3-for-1 forward split of its Depositary Receipts listed on the NYSE Amex and a concurrent adjustment of the exchange ratio of Depositary Receipts for Class A Units of the Partnership from 10-to-1 to 30-to-1, such that each Depositary Receipt represents one-thirtieth (¹/30) of a Class A Unit of the Partnership.

        All references to Depositary Receipts in the report are reflective of the 3-for-1 forward split.

        In 2011 and 2010, the Partnership paid four quarterly distributions of an aggregate of $28.00 per Unit ($0.93 per Receipt) for a total payment of 3,681,566 in 2011 and $3,687,600 in 2010. In February 2012, the Partnership approved a quarterly distribution of $7.50 per Unit ($0.25 per Receipt), payable on March 31, 2012.

        On August 20, 2007, NewReal, Inc., the General Partner authorized an equity repurchase program ("Repurchase Program") under which the Partnership was permitted to purchase, over a period of twelve months, up to 300,000 Depositary Receipts (each of which is one-thirtieth of a Class A Unit). On January 15, 2008, the General Partner authorized an increase in the Repurchase Program from 300,000 to 600,000 Depositary Receipts. On January 30, 2008 the General Partner authorized an increase the Repurchase Program from 600,000 to 900,000 Depositary Receipts. On March 6, 2008, the General Partner authorized the increase in the total number of Depositary Receipts that could be repurchased pursuant to the Repurchase Program from 900,000 to1,500,000. On August 8, 2008, the General Partner re-authorized and renewed the Repurchase Program for an additional 12-month period ended August 19, 2009. On March 22, 2010, the General Partner re-authorized and renewed the Repurchase Program that expired on August 19, 2009. Under the terms of the renewed Repurchase Program, the Partnership may purchase up to 1,500,000 Depositary Receipts from the start of the program in 2007 through March 31, 2015. The Repurchase Program requires the Partnership to repurchase a proportionate number of Class B Units and General Partner Units in connection with any repurchases of any Depositary Receipts by the Partnership based upon the 80%, 19% and 1% fixed distribution percentages of the holders of the Class A, Class B and General Partner Units under the Partnership's Second Amended and Restate Contract of Limited Partnership. Repurchases of Depositary Receipts or Partnership Units pursuant to the Repurchase Program may be made by the Partnership from time to time in its sole discretion in open market transactions or in privately negotiated transactions. From August 20, 2007 through December 31, 2011, the Partnership has repurchased 1,194,960 Depositary Receipts at an average price of $24.62 per receipt (or $738.60 per underlying Class A Unit), 1,724 Class B Units and 91 General Partnership Units, both at an average

3

Table of Contents

price of $585.05 per Unit, totaling approximately $30,481,000 including brokerage fees paid by the Partnership.

        On September 17, 2008, the Partnership completed the issuance of an aggregate of 6,642 Class A Units held in treasury to current holders of Class B and General Partner Units upon the simultaneous retirement to treasury of 6,309 Class B Units and 333 General Partner Units pursuant to an equity distribution plan authorized by the Board of Directors of the General Partner on August 8, 2008 and as further described under Item 3.02 of the Partnership's Current Report on Form 8-K as filed with the Securities and Exchange Commission on September 18, 2008, which is incorporated herein by reference. Harold Brown, the treasurer of the General Partner, controls 75% of the issued and outstanding Class B Units of the Partnership and 75% of the issued and outstanding equity of the General Partner, Ronald Brown, the brother of Harold Brown and the president of the General Partner, owns 25% of the issued and outstanding Class B Units of the Partnership and 25% of the issued and outstanding equity of the General Partner. The 75% of the issued and outstanding Class B units of the Partnership, controlled by Harold Brown, are owned by HBC Holdings LLC, an entity of which he is the manager.

Property Transactions

        In December 2009, the Partnership refinanced Linhart, LLP, located in Newton, Massachusetts. The new loan is $2,000,000, with a rate of 3.75% over the Libor rate or 4.25% whichever is greater and matures five years from the date of closing. The interest rate as of December 31, 2011 was 4.25%. The loan agreement calls for interest only payments for twenty four months and principal and interest payments for the remainder of the five year period based on a thirty year amortization. The loan proceeds were used to pay off the prior loan of approximately $1,700,000, and closing costs of approximately $38,000. There were no prepayment penalties. The balance of the mortgage outstanding at December 31, 2011 is $2,000,000.

        On March 25, 2010, the Partnership refinanced the Brookside Apartments. The new loan is $2,820,000, matures in 2020 and has an interest rate of 5.81%. The loan is a ten year note however it is being amortized over 30 years. The proceeds of the loan were used to pay off the old mortgage of approximately $1,900,000. There were no prepayment penalties. The balance of the mortgage outstanding at December 31, 2011 is $2,760,540.

        On May 18, 2011, the Partnership sold Avon Street Apartments, a 66 unit residential apartment complex located at 130 Avon Street, Malden, Massachusetts. The sales price was $8,750,000, which resulted in a financial statement gain of approximately $7,700,000. The net proceeds of the sale, of approximately $5,444,000 were held by a qualified intermediary in order for the Partnership to structure a tax free exchange in accordance with Section 1031 of the IRS code. This tax free exchange was completed with the purchase of Battle Green Apartments as described below.

        On June 1, 2011, the Partnership purchased the Battle Green Apartments, a 48 unit residential apartment complex located at 34-42 Worthen Road, Lexington, Massachusetts. The purchase price was $10,000,000. The Partnership used cash reserves, the proceeds from the sale of Avon Street and borrowed $3,998,573 from Harold Brown, Treasurer of the General Partner to make this purchase. This loan had an interest rate of 6% and was secured by the Partnership's ownership interest in Battle Green Apartments, LLC. The term of the loan is four years with a provision requiring payment in whole or in part upon demand within six months of notice or prepay without penalty. On July 27, 2011, the Partnership financed the Battle Green Apartments with a new $5,000,000 mortgage at 4.95% which matures in August 2026. Principal payments will be made using a 30 year amortization schedule. Deferred financing costs associated with this mortgage totaled approximately $100,000 and accordingly the effective interest rate is 5.07%. After paying off the existing loan of $3,998,573, approximately

4

Table of Contents

$1,000,000 was received by the Partnership. The interest paid on this loan to Harold Brown was $38,123.

        During 2011, the Partnership and its Subsidiary Partnerships completed improvements to certain of the Properties at a total cost of approximately $2,619,000. These improvements were funded from cash reserves and, to some extent, escrow accounts established in connection with the financing or refinancing of the applicable Properties. These sources have been adequate to fully fund improvements. The most significant improvements were made at Westgate Woburn, Olde English , 62 Boylston Street, School Street, Clovelly, and Hamilton Oaks at a cost of approximately $460,000, 316,000, $275,000, $187,000, $186,000, $186,000 and $175,000 respectively. The Partnership plans to invest approximately $1,837,000 in capital improvements in 2012.

Advisory Committee

        On October 29, 2007, Gregory Dube, Robert Nahigian, and Thomas Raffoul were elected to the Advisory Committee. These Advisory Committee members are not affiliated with the General Partner. The Advisory Committee meets with the General Partner to review the progress of the Partnership, assist the General Partner with policy formation, review the appropriateness, timing and amount of proposed distributions, approve or reject proposed acquisitions and investments with affiliates, and advise the General Partner on various other Partnership affairs. Per the Partnership Agreement, the Advisory Committee has no binding power except that it must approve certain investments and acquisitions or sales by the Partnership from or with affiliates of the Partnership.

Available Information

        The Partnership's website is www.thehamiltoncompany.com. On its website, the Partnership makes available, free of charge, its annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) of the Securities Exchange Act of 1934, as amended. These forms are made available as soon as reasonably practical after the Partnership electronically files or furnishes such materials to the Securities and Exchange Commission. In addition, the Partnership's website includes other items related to corporate governance matters, including, among other things, the Partnership's corporate governance guidelines, charters of various committees of the Board of Directors, and the Partnership's code of business conduct and ethics applicable to all employees, officers and directors. Copies of these documents may be obtained, free of charge, from the website. Any shareholder may obtain copies of these documents, free of charge, by sending a request in writing to: Director of Investor Relations, New England Realty Associates Limited Partnership, 39 Brighton Avenue, Allston, MA 02134.

ITEM 1A.    RISK FACTORS

        We are subject to certain risks and uncertainties as described below. These risks and uncertainties may not be the only ones we face; there may be additional risks that we do not presently know of or that we currently consider immaterial. All of these risks could adversely affect our business, financial condition, results of operations and cash flows. Our ability to pay distributions on, and the market price of, our equity securities may be adversely affected if any of such risks are realized. All investors should consider the following risk factors before deciding to purchase or sell securities of the Partnership.

        We are subject to risks inherent in the ownership of real estate.    We own and manage multifamily apartment complexes and commercial properties that are subject to varying degrees of risk generally incident to the ownership of real estate. Our financial condition, the value of our properties and our ability to make distributions to our shareholders will be dependent upon our ability to operate our properties in a manner sufficient to generate income in excess of operating expenses and debt service

5

Table of Contents

charges, which may be affected by the following risks, some of which are discussed in more detail below:

•

changes in the economic climate in the markets in which we own and manage properties, including interest rates, the overall level of economic activity, the availability of consumer credit and mortgage financing, unemployment rates and other factors;



•

a lessening of demand for the multifamily and commercial units that we own;



•

competition from other available multifamily residential and commercial units and changes in market rental rates;



•

increases in property and liability insurance costs;



•

changes in real estate taxes and other operating expenses (e.g., cleaning, utilities, repair and maintenance costs, insurance and administrative costs, security, landscaping, pest control, staffing and other general costs);



•

changes in laws and regulations affecting properties (including tax, environmental, zoning and building codes, and housing laws and regulations);



•

weather and other conditions that might adversely affect operating expenses;



•

expenditures that cannot be anticipated, such as utility rate and usage increases, unanticipated repairs and real estate tax valuation reassessments or mileage rate increases;



•

our inability to control operating expenses or achieve increases in revenues;



•

the results of litigation filed or to be filed against us;



•

risks related to our joint ventures;



•

risks of personal injury claims and property damage related to mold claims because of diminished insurance coverage;



•

catastrophic property damage losses that are not covered by our insurance;



•

risks associated with property acquisitions such as environmental liabilities, among others;



•

changes in market conditions that may limit or prevent us from acquiring or selling properties;



•

the perception of tenants and prospective tenants as to the attractiveness, convenience and safety of our properties or the neighborhoods in which they are located; and



•

the Partnership does not carry directors and officers insurance.

        We are dependent on rental income from our multifamily apartment complexes and commercial properties.    If we are unable to attract and retain tenants or if our tenants are unable to pay their rental obligations, our financial condition and funds available for distribution to our shareholders will be adversely affected.

        Our multifamily apartment complexes and commercial properties are subject to competition.    Our properties and joint venture investments are located in developed areas that include other properties. The properties also compete with other rental alternatives, such as condominiums, single and multifamily rental homes, owner occupied single and multifamily homes, and commercial properties in attracting tenants. This competition may affect our ability to attract and retain residents and to increase or maintain rental rates.

        The properties we own are concentrated in Eastern Massachusetts and Southern New Hampshire.    Our performance, therefore, is linked to economic conditions and the market for available rental housing

6

Table of Contents

and commercial space in these states. A decline in the market for apartment housing and/or commercial properties may adversely affect our financial condition, results of operations and ability to make distributions to our shareholders.

        Our insurance may not be adequate to cover certain risks.    There are certain types of risks, generally of a catastrophic nature, such as earthquakes, floods, windstorms, act of war and terrorist attacks that may be uninsurable, or are not economically insurable, or are not fully covered by insurance. Moreover, certain risks, such as mold and environmental exposures, generally are not covered by our insurance. Should an uninsured loss or a loss in excess of insured limits occur, we could lose our equity in the affected property as well as the anticipated future cash flow from that property. Any such loss could have a material adverse effect on our business, financial condition and results of operations.

        Debt financing could adversely affect our performance.    The vast majority of our assets are encumbered by project specific, non-recourse, non-cross-collateralized mortgage debt. There is a risk that these properties will not have sufficient cash flow from operations for payments of required principal and interest. We may not be able to refinance these loans at an amount equal to the loan balance and the terms of any refinancing may not be as favorable as the terms of existing indebtedness. If we are unable to make required payments on indebtedness that is secured by a mortgage, the Partnership will either invest additional money in the property or the property securing the mortgage may be foreclosed with a consequent loss of income and value to us.

        Real estate investments are generally illiquid, and we may not be able to sell our properties when it is economically or strategically advantageous to do so.    Real estate investments generally cannot be sold quickly, and our ability to sell properties may be affected by market conditions. We may not be able to diversify or vary our portfolio promptly in accordance with our strategies or in response to economic or other conditions.

        Our access to public debt markets is limited.    Substantially all of our debt financings are secured by mortgages on our properties because of our limited access to public debt markets.

        Litigation may result in unfavorable outcomes.    Like many real estate operators, we may be involved in lawsuits involving premises liability claims, housing discrimination claims and alleged violations of landlord-tenant laws, which may give rise to class action litigation or governmental investigations. Any material litigation not covered by insurance, such as a class action, could result in substantial costs being incurred. The Partnership does not carry directors and officers liability insurance.

        Our financial results may be adversely impacted if we are unable to sell properties and employ the proceeds in accordance with our strategic plan.    Our ability to pay down debt, reduce our interest costs, repurchase Depositary Receipts and acquire properties is dependent upon our ability to sell the properties we have selected for disposition at the prices and within the deadlines we have established for each respective property.

        The costs of complying with laws and regulations could adversely affect our cash flow and ability to make distributions to our shareholders.    Our properties must comply with Title III of the Americans with Disabilities Act (the "ADA") to the extent that they are "public accommodations" or "commercial facilities" as defined in the ADA. The ADA does not consider apartment complexes to be public accommodations or commercial facilities, except for portions of such properties that are open to the public. In addition, the Fair Housing Amendments Act of 1988 (the "FHAA") requires apartment complexes first occupied after March 13, 1990, to be accessible to the handicapped. Other laws also require apartment communities to be handicap accessible. Noncompliance with these laws could result in the imposition of fines or an award of damages to private litigants. We may be subject to lawsuits alleging violations of handicap design laws in connection with certain of our developments. If

7

Table of Contents

compliance with these laws involves substantial expenditures or must be made on an accelerated basis, our ability to make distributions to our shareholders could be adversely affected.

        Under various federal, state and local laws, an owner or operator of real estate may be liable for the costs of removal or remediation of certain hazardous or toxic substances on, under or in the property. This liability may be imposed without regard to whether the owner or operator knew of, or was responsible for, the presence of the substances. Other law imposes on owners and operators certain requirements regarding conditions and activities that may affect human health or the environment. Failure to comply with applicable requirements could complicate our ability to lease or sell an affected property and could subject us to monetary penalties, costs required to achieve compliance and potential liability to third parties. We are not aware of any material noncompliance, liability or claim relating to hazardous or toxic substances or other environmental matters in connection with any of our properties. Nonetheless, it is possible that material environmental contamination or conditions exist, or could arise in the future, in the apartment communities or on the land upon which they are located.

        We are subject to the risks associated with investments through joint ventures.    Nine of our properties are owned by joint ventures in which we do not have a controlling interest. We may enter into joint ventures, including joint ventures that we do not control, in the future. Any joint venture investment involves risks such as the possibility that the co-venturer may seek relief under federal or state insolvency laws, or have economic or business interests or goals that are inconsistent with our business interests or goals. While the bankruptcy or insolvency of our co-venturer generally should not disrupt the operations of the joint venture, we could be forced to purchase the co-venturer's interest in the joint venture or the interest could be sold to a third party. We also may guarantee the indebtedness of our joint ventures. If we do not have control over a joint venture, the value of our investment may be affected adversely by a third party that may have different goals and capabilities than ours.

        We are subject to risks associated with development, acquisition and expansion of multifamily apartment complexes and commercial properties.    Development projects and acquisitions and expansions of apartment complexes are subject to a number of risks, including:

•

availability of acceptable financing;



•

competition with other entities for investment opportunities;



•

failure by our properties to achieve anticipated operating results;



•

construction costs of a property exceeding original estimates;



•

delays in construction; and



•

expenditure of funds on, and the devotion of management time to, transactions that may not come to fruition.

        We are subject to control by our directors and officers.    The directors and executive officers of the General Partner and members of their families and related entities owned approximately 34% of our depositary receipts as of December 31, 2011. Additionally, management decisions rest with our General Partner without limited partner approval.

        Competition for skilled personnel could increase our labor costs.    We and our management company compete with various other companies in attracting and retaining qualified and skilled personnel who are responsible for the day-to-day operations of our properties. Competitive pressures may require that we enhance our pay and benefits package to compete effectively for such personnel. We may not be able to offset such added costs by increasing the rates we charge our tenants. If there is an increase in these costs or if we fail to attract and retain qualified and skilled personnel, our business and operating results could be harmed.

8

Table of Contents

        We depend on our key personnel.    Our success depends to a significant degree upon the continued contribution of key members of the management company, who may be difficult to replace. The loss of services of these executives could have a material adverse effect on us. There can be no assurance that the services of such personnel will continue to be available to us. We do not hold key-man life insurance on any of our key personnel.

        Changes in market conditions could adversely affect the market price of our Depositary Receipts.    As with other publicly traded equity securities, the value of our depositary receipts depends on various market conditions, which may change from time to time. Among the market conditions that may affect the value of our depositary receipts are the following:

•

the extent of investor interest in us;



•

the general reputation of real estate companies and the attractiveness of our equity securities in comparison to other equity securities, including securities issued by other real estate companies;



•

our financial performance; and



•

general stock and bond market conditions.

        The market value of our depositary is based primarily upon the market's perception of our growth potential and our current and potential future earnings and cash distributions. Consequently, our depositary receipts may trade at prices that are higher or lower than our net asset value per depositary receipt.

        We face possible risks associated with the physical effects of climate change.    We cannot predict with the certainty whether climate change is occurring and, if so at what rate. However, the physical effects of climate change could have a material effect on our properties, operations, and business. To the extent climate change causes changes in weather patterns, our markets could experience increases in storm intensity and rising sea levels. Over time, these conditions could result in declining demand for our buildings or the inability of us to operate the buildings at all. Climate change may also have indirect effects on our business by increasing the cost of (or making unavailable) property insurance on terms we find acceptable, increasing the cost of energy and increasing the cost of snow removal at our properties. Proposed federal legislation to address climate change could increase utility and other costs of operating our properties which, if not offset by rising rental income, would reduce our net income. There can be no assurance that climate change will not have a material adverse effect on our properties, operations or business.

        Security breaches and other disruptions could compromise our information and expose us to liability, which would cause our business and reputation to suffer.    In the ordinary course of our business, we collect and store sensitive data, including intellectual property, our proprietary business information and that of our tenants and business partners, including personally identifiable information of our tenants and employees, in our data centers and on our networks. Despite our security measures, our information technology and infrastructure may be vulnerable to attacks by hackers or breached due to employee error, malfeasance or other disruptions. Any such breach could compromise our networks and the information stored there could be accessed, publicly disclosed, lost or stolen. Any such access, disclosure or other loss of information could result in legal claims or proceedings, liability under laws that protect the privacy of personal information, disrupt our operations, and damage our reputation, which could adversely affect our business.

9

Table of Contents

ITEM 1B.    UNRESOLVED STAFF COMMENTS

        None.

ITEM 2.    PROPERTIES

        The Partnership and its Subsidiary Partnerships own the Apartment Complexes, the Condominium Units, the Commercial Properties and a 40-50% interest in nine Investment Properties.

        See also "Item 13. Certain Relationships and Related Transactions and Director Independence" for information concerning affiliated transactions.

Apartment Complexes

        The table below lists the location of the 2,251 Apartment Units, the number and type of units in each complex, the range of rents and vacancies as of February 1, 2012, the principal amount outstanding under any mortgages as of December 31, 2011, the fixed interest rates applicable to such mortgages, and the maturity dates of such mortgages.

10

Table of Contents

11

Table of Contents

        Current free rent concessions would result in an average reduction in unit rents of less than $8.50 per month per unit. Free rent expense amortized in 2011 was approximately $231,000, compared to approximately $208,000 in 2010.

        On June 1, 2011, the Partnership purchased the Battle Green Apartments, a 48 unit residential apartment complex located at 34-42 Worthen Road, Lexington, Massachusetts. The purchase price was $10,000,000. The purchase price equates to a capitalization rate of 5.0% on the trailing 12 months actual net operating income provided by the seller. Net operating income is equal to earnings before interest, depreciation and income taxes. Based on the Partnerships operating expectation, the capitalization rate for this investment is 6.2%. The Partnership used cash reserves, the proceeds from the sale of Avon Street and borrowed $3,998,573 from Harold Brown, Treasurer of the General Partner to make this purchase. This loan had an interest rate of 6% and was secured by the Partnership's ownership interest in Battle Green Apartments, LLC. On July 27, 2011, the Partnership financed the Battle Green Apartments with a new $5,000,000 mortgage at 4.95% which matures in August 2026. Proceeds for the financing were used to pay off the loan from Harold Brown and the balance was deposited in the Partnerships operating account. Principal payments will be made using a 30 year amortization schedule. See Note 2 to the Consolidated Financial statements for additional information.

        See Note 5 to the Consolidated Financial Statements, included as part of this Form 10-K, for information relating to the mortgages payable of the Partnership and its Subsidiary Partnerships.

Condominium Units

        The Partnership owns and leases to residential tenants 19 Condominium Units in the metropolitan Boston area of Massachusetts.

12

Table of Contents

        The table below lists the location of the 19 Condominium Units, the type of units, the range of rents received by the Partnership for such units, and the number of vacancies as of February 1, 2012.

Commercial Properties

        BOYLSTON DOWNTOWN LP.    In 1995, this Subsidiary Partnership acquired the Boylston Downtown property in Boston, Massachusetts ("Boylston"). This mixed-use property includes 17,218 square feet of rentable commercial space. As of February 1, 2012, the commercial space had a 0% vacancy rate, and the average rent per square foot was $24.64. The Partnership also rents roof space for a cellular phone antenna at an average rent of approximately $25,620 per year through June 30, 2016. For mortgage balance, interest rate and maturity date information see "Apartment Complexes," above.

        HAMILTON OAKS ASSOCIATES, LLC.    The Hamilton Oaks Apartment complex, acquired by the Partnership in December 1999 through Hamilton Oaks Associates, LLC, includes 6,075 square feet of rentable commercial space, occupied by a daycare center. As of February 1, 2012, the commercial space was fully occupied, and the average rent per square foot was $12.00. The Partnership also rents roof space for a cellular phone antenna at an average rent of approximately $34,018 per year through November 2015. For mortgage balance, interest rate and maturity date information see "Apartment Complexes," above.

        LINHART LP.    In 1995, the Partnership acquired the Linhart property in Newton, Massachusetts ("Linhart"). This mixed-use property includes 21,555 square feet of rentable commercial space. As of February 1, 2012, the commercial space was fully occupied, and the average rent per square foot was $24.35. For mortgage balance, interest rate and maturity date information see "Apartment Complexes," above.

        NORTH BEACON 140 LP.    In 1995, this Subsidiary Partnership acquired the North Beacon property in Boston, Massachusetts ("North Beacon"). This mixed-use property includes 1,050 square feet of rentable commercial space. The property was fully rented as of February 1, 2012, and the average rent per square foot as of that date was $31.32. For mortgage balance, interest rate and maturity date information see "Apartment Complexes," above.

        STAPLES PLAZA.    In 1999, the Partnership acquired the Staples Plaza shopping center in Framingham, Massachusetts ("Staples Plaza"). The shopping center consists of 39,600 square feet of rentable commercial space. As of December 31, 2011, the mortgage had an outstanding balance $6,000,000 with interest rate of 5.97%, matures in 2018. As of February 1, 2012, Staples Plaza was fully occupied, and the average net rent per square foot was $23.87.

        HAMILTON LINEWT ASSOCIATES, LLC.    In 2007, the Partnership acquired a retail block in Newton, Massachusetts. The property consists of approximately 6,000 square feet of rentable commercial space. The property was fully rented at an average rent of $37.92 per square foot. The Partnership obtained a mortgage in January 2008 of $1,700,000 on this property. The mortgage balance at December 31, 2011 is $1,567,232 the interest rate is 5.75% and matures in January 2018.

13

Table of Contents

        HAMILTON CYPRESS LLC.    In 2008, the Partnership acquired a medical office building in Brookline, Massachusetts. The property consists of approximately 20,000 square feet of rentable commercial space. The property was fully rented at an average rent of $36.94 per square foot. Three leases covering 12,840 sq feet are expiring on March 31, 2012. The new or renewal rents are expected to be approximately $30.00 per square foot resulting in a decrease in rental income of approximately $90,000 per year. The Partnership assumed a mortgage of approximately $4,011,000. The mortgage balance at December 31, 2011 is $3,769,927; the interest rate is 5.92% and matures in May 2013.

        The following information is provided for commercial leases:

        Commercial rental income is accounted for using the straight line method. Forty percent of our commercial leases contain rent escalations which range from $0.50 – $2.00 per square foot per year.

Investment Properties

        See Note 14 to the Financial Statements and Exhibit 99.1 for additional information regarding the Investment Properties.

        The Partnership has a 50% ownership interest in the properties summarized below:

14

Table of Contents

        345 FRANKLIN, LLC. In November 2001, the Partnership invested approximately $1,533,000 for a 50% ownership interest in a 40-unit apartment building in Cambridge, Massachusetts. This property has a 12-year mortgage, with a remaining balance at December 31, 2011 of approximately $7,019,000 at 6.9% which is amortized on a 30-year schedule, with a final payment of approximately $6,000,000 in 2014. This investment is referred to as 345 Franklin, LLC.

        HAMILTON ON MAIN, LLC. In August 2004, the Partnership invested $8,000,000 for a 50% ownership interest in a 280-unit apartment complex located in Watertown, Massachusetts. The total purchase price was $56,000,000. As of May 2008, the Partnership sold 137 units as condominiums. Gains from these sales were taxed as ordinary income (approximately $50,000 per unit). The majority of the sales proceeds were applied to reduce the mortgage with the final payment made during the second quarter of 2007. With the sale of the units and the payments of the liabilities, the assets were combined with Hamilton on Main Apartments, LLC. An entity partially owned by the majority shareholder of the General Partner and the President of the management company, 31% and 5%, respectively, was the sales agent and received a variable commission on each sale of 3% to 5%. Hamilton on Main, LLC is known as Hamilton Place.

15

Table of Contents

        In 2005, Hamilton on Main Apartments, LLC obtained a ten year mortgage on the three buildings to be retained. The mortgage is $16,825,000, with interest only of 5.18% for three years and amortizing on a 30 year schedule for the remaining seven years when the balance is due. The net proceeds after funding escrow accounts and closing costs on the mortgage were approximately $16,700,000, which were used to reduce the existing mortgage. Hamilton on Main LLC paid a fee of approximately $400,000 in connection with this early extinguishment of debt. At December 31, 2011, the remaining balance on the mortgage is approximately $15,887,000.

        HAMILTON MINUTEMAN, LLC. In September 2004, the Partnership invested approximately $5,075,000 for a 50% ownership interest in a 42-unit apartment complex located in Lexington, Massachusetts. The purchase price was $10,100,000. In October 2004, the Partnership obtained a mortgage on the property in the amount of $8,025,000 and returned $3,775,000 to the Partnership. The Partnership obtained a new 10-year mortgage in the amount of $5,500,000 in January 2007. The interest on the new loan is 5.67% fixed for the ten year term with interest only payments for five years and amortized over a 30 year period for the balance of the loan. This loan required a cash contribution by the Partnership of $1,250,000 in December 2006. This investment is referred to as Hamilton Minuteman, LLC.

        HAMILTON ESSEX 81, LLC. On March 7, 2005, the Partnership invested $2,000,000 for a 50% ownership interest in a building comprising 49 apartments, one commercial space and a 50-car surface parking lot located in Boston, Massachusetts. The purchase price was $14,300,000, with a $10,750,000 mortgage. The Partnership plans to operate the building and initiate development of the parking lot. In June 2007, the Partnership separated the parcels, formed an additional limited liability company for the residential apartments and obtained a mortgage on the property. The new limited liability company formed for the residential apartments and commercial space is referred to as Hamilton Essex 81, LLC. In August 2008, the Partnership restructured the mortgages on both parcels at Essex 81 and transferred the residential apartments to Hamilton Essex 81, LLC. The mortgage on Hamilton Essex 81, LLC is $8,600,000 with interest only at 5.79% due in August 2015. The mortgage on Essex Development, LLC, or the parking lot is $2,144,796 with a variable interest rate of 2.25% over the daily Libor rate (0.3% at December 31, 2011) and was originally due in August 2011. This loan was extended to August 2012 with the same conditions except for the addition of fixed principal payments in the amount of $4,301 per month. Harold Brown has issued a personal guaranty up to $1,000,000 of this mortgage. In the event that he is obligated to make payments to the lender as a result of this guaranty, the Partnership and other investors have, in turn, agreed to indemnify him for their proportionate share of any such payments. The investment in the parking lot is referred to as Hamilton Essex Development, LLC; the investment in the apartments is referred to as Hamilton Essex 81, LLC.

        HAMILTON 1025, LLC. On March 2, 2005, the Partnership invested $2,352,000 for a 50% ownership interest in a 176-unit apartment complex with an additional small commercial building located in Quincy, Massachusetts. The purchase price was $23,750,000. The Partnership sold 127 of the units as condominiums and retained 49 units for long-term investment. The Partnership obtained a new 10-year mortgage in the amount of $5,000,000 on the units to be retained by the Partnership. The interest on the new loan is 5.67% fixed for the 10 year term with interest only payments for five years and amortized over a 30 year period for the balance of the loan term. At December 31, 2011, the mortgage balance is approximately $4,995,000. This investment is referred to as Hamilton 1025, LLC.

        HAMILTON BAY, LLC. On October 3, 2005, the Partnership invested $2,500,000 for a 50% ownership interest in a 168-unit apartment complex in Quincy, Massachusetts. The purchase price was $30,875,000. The Partnership plans to sell the majority of units as condominium and retain 48 units for long-term investment. Gains from the sales of units will be taxed at ordinary income rates (approximately $47,000 per unit). In February 2007, the Partnership refinanced the 48 units which will be retained with a new mortgage in the amount of $4,750,000 with an interest rate of 5.57%, interest only for five years. The loan will be amortized over 30 years thereafter and matures in March 2017.

16

Table of Contents

This investment is referred to as Hamilton Bay Apartments, LLC. In April 2008, the Partnership refinanced an additional 20 units and obtained a new mortgage in the amount of $2,368,000 with interest at 5.75%, interest only, which matures in 2013. As of February 1, 2012, the Partnership sold 105 units, the proceeds of which went to pay down the mortgage on the property. The balance on the new mortgage is approximately $1,668,000 at December 31, 2011. This investment is referred to as Hamilton Bay, LLC.

        HAMILTON PARK TOWERS, LLC On October 28, 2009 the Partnership invested approximately $15,925,000 in a joint venture to acquire a 40% interest in a residential property located in Brookline, Massachusetts. The property, referred to as Dexter Park, is a 409 unit residential complex. The purchase price was $129,500,000. The total mortgage is $89,914,000 with an interest rate of 5.57% and it matures in 2019. The mortgage calls for interest only payments for the first two years of the loan and amortized over 30 years thereafter. The balance of this mortgage is approximately $89,733,000 at December 31, 2011. In order to fund this investment, the Partnership used approximately $8,757,000 of its cash reserves and borrowed approximately $7,168,000 with an interest rate of 6% from HBC Holdings, LLC, an entity owned by Harold Brown and his affiliates ("HBC"). The term of the loan is four years with a provision requiring payment in whole or in part upon demand by HBC with six months notice. On August 17, 2010, HBC gave six months written notice to the Partnership requesting a principal pay down of $2,500,000. During the fourth quarter of 2010, the Partnership paid HBC $2,500,000 as requested. During 2011, the Partnership elected to make principal payments of $1,000,000 on August 1, 2011, $1,000,000 on October 3, 2011, and an additional $1,000,000 on December 15, 2011 reducing the loan balance to $1,668,600. This loan will remain subject to the original terms of the Note, including HBC's right to demand payment of the balance of the loan in whole or in part upon six months notice. The interest paid during the year ended December 31, 2011 and 2010 was $238,673 and $414,740, respectively. This loan is collateralized by the Partnership's 99% ownership interest in 62 Boylston Street. A majority of the apartments were leased at the time of the acquisition. As a result, the Partnership amortized the intangible assets associated with the "in place" leases over a 12 month period which began in November 2009. The total monthly amortization was approximately $407,000 which at 40% reduced the Partnership's income by approximately $163,000 per month. For the year ended December 31, 2010 the total amortization in connection with these leases was approximately $4,073,000, of which the Partnership's share was approximately $1,629,000. The intangible asset was fully amortized effective November 2010. This investment, Hamilton Park Towers, LLC is referred to as Dexter Park. See Note 18 for subsequent principle payment to HBC.

ITEM 3.    LEGAL PROCEEDINGS

        The Partnership, the Subsidiary Partnerships, and the Investment Properties and their properties are not presently subject to any material litigation, and, to management's knowledge, there is not any material litigation presently threatened against them. The properties are occasionally subject to ordinary routine legal and administrative proceedings incident to the ownership of residential and commercial real estate. Some of the legal and other expenses related to these proceedings are covered by insurance and none of these costs and expenses are expected to have a material adverse effect on the Consolidated Financial Statements of the Partnership.

ITEM 4.    MINE SAFETY DISCLOSURE

        Not applicable.

17

Table of Contents

ITEM 5.    MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

        Each Class A Unit is exchangeable, through Computershare Trust Company ("Computershare") (formerly Equiserve LP), the Partnership's Depositary Agent, for 30 Depositary Receipts ("Receipts"). The Receipts are listed and publicly traded on the NYSE Amex Exchange under the symbol "NEN." There has never been an established trading market for the Class B Units or General Partnership Units.

        In 2011, the high and low bid quotations for the Receipts were $24.84 and $20.45 respectively. The table below sets forth the high and low bids for each quarter of 2011 and 2010 and the distributions paid on the Partnership's Depositary Receipts:

        Effective January 3, 2012, the Partnership authorized a 3-for-1 forward split of its Depositary Receipts listed on the NYSE Amex and a concurrent adjustment of the exchange ratio of Depositary Receipts for Class A Units of the Partnership from 10-to-1 to 30-to-1, such that each Depositary Receipt represents one-thirtieth (¹/30) of a Class A Unit of the Partnership. All references to Depositary Receipts in the report are reflective of the 3-for-1 forward split.

Distribution to Limited & General Partners were:

        On March 1, 2012, the closing price on the NYSE Amex Exchange for a Depositary Receipt was $27.41. There were 3,022,398 Depositary Receipts outstanding and 4,441 Units (representing 133,230 receipts) held by 1,124 record holders.

        Any portion of the Partnership's cash, which the General Partner deems not necessary for cash reserves, is distributed to the Partners, and distributions are made on a quarterly basis. The Partnership has made annual distributions to its Partners since 1978. In each of 2011 and 2010, the Partnership made total distributions of $28.00 per Unit, ($0.93 per Receipt). The total value of the distribution in 2011 was $3,681,566 and $3,687,600 in 2010. In January 2012, the Partnership declared a quarterly distribution of $7.50 per Unit ($0.25 per Receipt) payable on March 31, 2012.

        See "Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters" for certain information relating to the number of holders of each class of Units. The Partnership does not have any securities authorized for issuance pursuant to any equity compensation plans.

        On August 20, 2007, NewReal, Inc., the General Partner authorized an equity repurchase program ("Repurchase Program") under which the Partnership was permitted to purchase, over a period of twelve months, up to 300,000 Depositary Receipts (each of which is one-tenth of a Class A Unit). On

18

Table of Contents

January 15, 2008, the General Partner authorized an increase in the Repurchase Program from 300,000 to 600,000 Depositary Receipts. On January 30, 2008 the General Partner authorized an increase the Repurchase Program from 600,000 to 900,000 Depositary Receipts. On March 6, 2008, the General Partner authorized the increase in the total number of Depositary Receipts that could be repurchased pursuant to the Repurchase Program from 900,000 to1, 500,000. On August 8, 2008, the General Partner re-authorized and renewed the Repurchase Program for an additional 12-month period ended August 19, 2009. On March 22, 2010, the General Partner re-authorized and renewed the Repurchase Program that expired on August 19, 2009. Under the terms of the renewed Repurchase Program, the Partnership may purchase up to 1,500,000 Depositary Receipts from the start of the program in 2007 through March 31, 2015. The Repurchase Program requires the Partnership to repurchase a proportionate number of Class B Units and General Partner Units in connection with any repurchases of any Depositary Receipts by the Partnership based upon the 80%, 19% and 1% fixed distribution percentages of the holders of the Class A, Class B and General Partner Units under the Partnership's Second Amended and Restate Contract of Limited Partnership. Repurchases of Depositary Receipts or Partnership Units pursuant to the Repurchase Program may be made by the Partnership from time to time in its sole discretion in open market transactions or in privately negotiated transactions. From August 20, 2007 through December 31, 2011, the Partnership has repurchased 1,194,960 Depositary Receipts at an average price of $24.62 per receipt (or $738.60 per underlying Class A Unit), 1,724 Class B Units and 91 General Partnership Units, both at an average price of $585.05 per Unit, totaling approximately $30,481,000 including brokerage fees paid by the Partnership.

        On September 17, 2008, the Partnership completed the issuance of an aggregate of 6,642 Class A Units held in treasury to current holders of Class B and General Partner Units upon the simultaneous retirement to treasury of 6,309 Class B Units and 333 General Partner Units pursuant to an equity distribution plan authorized by the Board of Directors of the General Partner on August 8, 2008 and as further described under Item 3.02 of the Partnership's Current Report on Form 8-K as filed with the Securities and Exchange Commission on September 18, 2008, which is incorporated herein by reference. Harold Brown, the treasurer of the General Partner, owns 75% of the issued and outstanding Class B Units of the Partnership and 75% of the issued and outstanding equity of the General Partner, Ronald Brown, the brother of Harold Brown and the president of the General Partner, owns 25% of the issued and outstanding Class B Units of the Partnership and 25% of the issued and outstanding equity of the General Partner.

        See Note 8 to the Consolidated Financial Statements for information concerning this repurchase program.

NYSE Amex Compliance

        On September 9, 2011, the Partnership received a notification letter from the Corporate Compliance Department of the NYSE Amex LLC (the "NYSE Amex") indicating that as of June 30, 2011 the Partnership was not in compliance with the minimum stockholders' equity requirement for continued listing of the Partnership's Depositary Receipts on the NYSE Amex. Specifically, the Partnership was not in compliance with Section 1003(a)(i) of the NYSE Amex Company Guide (the "Company Guide") since it reported stockholders' equity of less than $2,000,000 at June 30, 2011 and had incurred losses from continuing operations and/or net losses in two out of its three most recent fiscal years ended December 31, 2010.

        The Partnership was afforded the opportunity to submit a plan of compliance (the "Compliance Plan") to the NYSE Amex and on October 4, 2011 the Partnership presented its Compliance Plan to the NYSE Amex.

        On November 10, 2011, the NYSE Amex notified the Partnership that it accepted the Partnership's Compliance Plan. On January 6, 2012, the NYSE Amex notified the Partnership that as a result of the

19

Table of Contents

Partnership's 3-for-1 forward split of its Depositary Receipts on January 3, 2012, the Partnership has resolved it continued listing deficiency and now qualifies for the market capitalization exception in Section 1003(a) of the Company Guide.

COMPARISON OF 5 YEAR CUMULATIVE TOTAL RETURN*
Among New England Realty Assoc. L.P., the NYSE Amex Composite Index,
and the FTSE NAREIT All REITs Index

*$100 invested on 12/31/06 in stock or index, including reinvestment of dividends.
Fiscal year ending December 31.

        The Partnership does not have any securities authorized for issuance under any equity compensation plans that are subject to disclosure under Item 201(d) of Regulation S-K.

ITEM 6.    SELECTED FINANCIAL DATA

        The information required by this Item is included on page 47 of this Form 10-K.

ITEM 7.    MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward Looking Statements

        Certain information contained herein includes forward looking statements, which are made pursuant to the safe harbor provisions of the Private Securities Liquidation Reform Act of 1995 (the "Act"). Forward looking statements in this report, or which management may make orally or in written form from time to time, reflect management's good faith belief when those statements are made, and are based on information currently available to management. Caution should be exercised in interpreting and relying on such forward looking statements, the realization of which may be impacted by known and unknown risks and uncertainties, events that may occur subsequent to the forward looking statements, and other factors which may be beyond the Partnership's control and which can materially affect the Partnership's actual results, performance or achievements for 2011 and beyond. Should one or more of the risks or uncertainties mentioned below materialize, or should underlying

20

Table of Contents

assumptions prove incorrect, actual results may vary materially from those anticipated, estimated or projected. We expressly disclaim any responsibility to update our forward looking statements, whether as a result of new information, future events or otherwise. Accordingly, investors should use caution in relying on past forward looking statements, which are based on results and trends at the time they are made, to anticipate future results or trends.

        Along with risks detailed in Item 1A and from time to time in the Partnership's filings with the Securities and Exchange Commission, some factors that could cause the Partnership's actual results, performance or achievements to differ materially from those expressed or implied by forward looking statements include but are not limited to the following:

•

The Partnership depends on the real estate markets where its properties are located, primarily in Eastern Massachusetts, and these markets may be adversely affected by local economic market conditions, which are beyond the Partnership's control.



•

The Partnership is subject to the general economic risks affecting the real estate industry, such as dependence on tenants' financial condition, the need to enter into new leases or renew leases on terms favorable to tenants in order to generate rental revenues and our ability to collect rents from our tenants.



•

The Partnership is also impacted by changing economic conditions making alternative housing arrangements more or less attractive to the Partnership's tenants, such as the interest rates on single family home mortgages and the availability and purchase price of single family homes in the Greater Boston metropolitan area.



•

The Partnership is subject to significant expenditures associated with each investment, such as debt service payments, real estate taxes, insurance and maintenance costs, which are generally not reduced when circumstances cause a reduction in revenues from a property.



•

The Partnership is subject to increases in heating and utility costs that may arise as a result of economic and market conditions and fluctuations in seasonal weather conditions.



•

Civil disturbances, earthquakes and other natural disasters may result in uninsured or underinsured losses.



•

Actual or threatened terrorist attacks may adversely affect our ability to generate revenues and the value of our properties.



•

Financing or refinancing of Partnership properties may not be available to the extent necessary or desirable, or may not be available on favorable terms.



•

The Partnership properties face competition from similar properties in the same market. This competition may affect the Partnership's ability to attract and retain tenants and may reduce the rents that can be charged.



•

Given the nature of the real estate business, the Partnership is subject to potential environmental liabilities. These include environmental contamination in the soil at the Partnership's or neighboring real estate, whether caused by the Partnership, previous owners of the subject property or neighbors of the subject property, and the presence of hazardous materials in the Partnership's buildings, such as asbestos, lead, mold and radon gas. Management is not aware of any material environmental liabilities at this time.



•

Insurance coverage for and relating to commercial properties is increasingly costly and difficult to obtain. In addition, insurance carriers have excluded certain specific items from standard insurance policies, which have resulted in increased risk exposure for the Partnership. These include insurance coverage for acts of terrorism and war, and coverage for mold and other

21

Table of Contents

environmental conditions. Coverage for these items is either unavailable or prohibitively expensive.

•

Market interest rates could adversely affect market prices for Class A Partnership Units and Depositary Receipts as well as performance and cash flow.



•

Changes in income tax laws and regulations may affect the income taxable to owners of the Partnership. These changes may affect the after-tax value of future distributions.



•

The Partnership may fail to identify, acquire, construct or develop additional properties; may develop or acquire properties that do not produce a desired or expected yield on invested capital; may be unable to sell poorly- performing or otherwise undesirable properties quickly; or may fail to effectively integrate acquisitions of properties or portfolios of properties.



•

Risk associated with the use of debt to fund acquisitions and developments.



•

Competition for acquisitions may result in increased prices for properties.



•

Any weakness identified in the Partnership's internal controls as part of the evaluation being undertaken could have an adverse effect on the Partnership's business.



•

Ongoing compliance with Sarbanes-Oxley Act of 2002 may require additional personnel or systems changes.

        The foregoing factors should not be construed as exhaustive or as an admission regarding the adequacy of disclosures made by the Partnership prior to the date hereof or the effectiveness of said Act. The Partnership expressly disclaims any obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.

        Since the Partnership's long-term goals include the acquisition of additional properties, a portion of the proceeds from the refinancing and sale of properties is reserved for this purpose. If available acquisitions do not meet the Partnership's criteria, the Partnership may purchase additional depositary receipts. The Partnership will consider refinancing existing properties if the Partnership's cash reserves are insufficient to repay existing mortgages or if the Partnership needs additional funds for future acquisitions.

        In 2011, our local economy improved at a pace faster than at the national level. The supply and demand imbalance in favor of the property owner has occurred due to the combination of local employment gains, limited new rental housing and continued stringent single family lending standards. Although the regional industry average rental vacancy was 4%, our portfolio's average vacancy for the year was under 2%. These events created upward pressure on rental rates for both new and renewing leases. In addition, property owners are seeing the virtual elimination of concessions and leasing commissions. Management expects revenues for 2012 to outpace 2011 given the 4^th quarter revenues that are already in place for the majority of 2012.

        As anticipated, revenue for 2011 increased by 5.6% or approximately $1,800,000 compared to 2010. Despite an extremely cold and white winter, any increases in operating expenses were offset by wholesale declines in bad debt, administrative expenses, leasing commissions and rental concessions. For the entire year, operating expenses, excluding non cash expense of depreciation and amortization, were only 2.2% above previous year's experience resulting in an 8.8% increase in core Net Operating Income. . Management is forecasting another year of revenue growth and barring a repeated winter of 2011, expects operating expenses to remain stagnant. These improvements will be the result of revenue already in place, expected increases given market conditions and the further reductions in leasing commission costs and bad debt.

22

Table of Contents

        The Joint Ventures are experiencing similar occupancy, revenue and operating expense improvements. Dexter Park, the largest joint venture, is expected to outperform 2011 on all facets of operations. In contrast to occupancy when acquired (94%), Dexter Park had one vacant unit at year end and will continue to see revenue grow.

        Management believes opportunities exist within the portfolio's maturing long term debt and will be balancing the debt levels and interest rate opportunities during 2012. Though the Stock Repurchase program is current, there were no shares repurchased during 2011. Management continues to balance the investment alternatives against cash liquidity and current share price. Management believes the recent increase in distributions in 2012 is appropriate given the sustained performance of the portfolio balanced against future earnings that the Partnership will be incurring.

        The Stock Repurchase Program that was initiated in 2007 has purchased 1,194,960 Depositary Receipts through February 2012 or 29% of the outstanding class A Depositary Receipts. The Partnership has retained The Hamilton Company ("Hamilton") to manage and administer the Partnership's and Joint Ventures' Properties. Hamilton is a full-service real estate management company, which has legal, construction, maintenance, architectural, accounting and administrative departments. The Partnership's properties represent approximately 36% of the total properties and 45% of the residential properties managed by Hamilton. Substantially all of the other properties managed by Hamilton are owned, wholly or partially, directly or indirectly, by Harold Brown. The Partnership's Second Amended and Restated Contract of Limited Partnership (the "Partnership Agreement") expressly provides that the general partner may employ a management company to manage the properties, and that such management company may be paid a fee of up to 4% of rental receipts for administrative and management services (the "Management Fee"). The Partnership pays Hamilton the full annual Management Fee, in monthly installments.

        At March 1, 2012, Harold Brown, his brother Ronald Brown and the President of Hamilton, Carl Valeri, collectively own approximately 39% of the Depositary Receipts representing the Partnership Class A Units (including Depositary Receipts held by trusts for the benefit of such persons' family members). Harold Brown also controls 75% of the Partnership's Class B Units, 75% of the capital stock of NewReal, Inc. ("NewReal"), the Partnership's sole general partner, and all of the outstanding stock of Hamilton. Ronald Brown also owns 25% of the Partnership's Class B Units and 25% of NewReal's capital stock. In addition, Ronald Brown is the President and director of NewReal and Harold Brown is NewReal's Treasurer and a director. One of NewReal's directors, Roberta Ornstein also owns immaterial amounts of the Partnership's Class A receipts. The 75% of the issued and outstanding Class B units of the Partnership, controlled by Harold Brown, are owned by HBC Holdings LLC, an entity of which he is the manager.

        In addition to the Management Fee, the Partnership Agreement further provides for the employment of outside professionals to provide services to the Partnership and allows NewReal to charge the Partnership for the cost of employing professionals to assist with the administration of the Partnership's properties. Additionally, from time to time, the Partnership pays Hamilton for repairs and maintenance services, legal services, construction services and accounting services. The costs charged by Hamilton for these services are at the same hourly rate charged to all entities managed by Hamilton, and management believes such rates are competitive in the marketplace.

        Residential tenants sign a one year lease. In 2011, tenant renewals were approximately 60% with an average rental increase of approximately 2%, new leases accounted for approximately 40% with rental rate increases of approximately 2% to 4%. In 2011, leasing commissions decreased approximately 42% from 2010, while tenant concessions decreased approximately 37% from 2010. Tenant improvements were approximately $1,195,000 in 2011, compared to approximately $1,388,000in 2010, a decrease of approximately $193,000 (14%).

23

Table of Contents

        Hamilton accounted for approximately 4.4% of the repair and maintenance expense paid for by the Partnership in the year ended December 31, 2011 and 6.5% in the year ended December 31, 2010. Of the funds paid to Hamilton for this purpose, the great majority was to cover the cost of services provided by the Hamilton maintenance department, including plumbing, electrical, carpentry services, and snow removal for those properties close to Hamilton's headquarters. However, several of the larger Partnership properties have their own maintenance staff. Further, those properties that do not have their own maintenance staff and are located more than a reasonable distance from Hamilton's headquarters in Allston, Massachusetts are generally serviced by local, independent companies.

        Hamilton's legal department handles most of the Partnership's eviction and collection matters. Additionally, it prepares most long-term commercial lease agreements and represents the Partnership in selected purchase and sale transactions. Overall, Hamilton provided approximately 69% and 76% of the legal services paid for by the Partnership during the years ended December 31, 2011 and 2010, respectively.

        Additionally, as described in Note 3 to the consolidated financial statements, The Hamilton Company receives similar fees from the Investment Properties.

        The Partnership requires that three bids be obtained for construction contracts in excess of $5,000. Hamilton may be one of the three bidders on a particular project and may be awarded the contract if its bid and its ability to successfully complete the project are deemed appropriate. For contracts that are not awarded to Hamilton, Hamilton charges the Partnership a construction supervision fee equal to 5% of the contract amount. Hamilton's architectural department also provides services to the Partnership on an as-needed basis. In 2011, Hamilton provided the Partnership approximately $56,000 in construction and architectural services, compared to $32,000 for the year ended December 31, 2010.

        Prior to 1991, the Partnership employed an outside, unaffiliated company to perform its bookkeeping and accounting functions. Since that time, such services have been provided by Hamilton's accounting staff, which consists of approximately 14 people. In 2011, Hamilton charged the Partnership $125,000 per year ($31,250 per quarter) for bookkeeping and accounting services. In 2012, Hamilton will charge the Partnership $125,000 for bookkeeping and accounting services ($31,250 per quarter.)

        For more information on related party transactions, see Note 3 to the Consolidated Financial Statements.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

        The preparation of the consolidated financial statements, in accordance with accounting principles generally accepted in the United States of America, requires the Partnership to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosures of contingent assets and liabilities. The Partnership regularly and continually evaluates its estimates, including those related to acquiring, developing and assessing the carrying values of its real estate properties and its investments in and advances to joint ventures. The Partnership bases its estimates on historical experience, current market conditions, and on various other assumptions that are believed to be reasonable under the circumstances. However, because future events and their effects cannot be determined with certainty, the determination of estimates requires the exercise of judgment. The Partnership's critical accounting policies are those which require assumptions to be made about such matters that are highly uncertain. Different estimates could have a material effect on the Partnership's financial results. Judgments and uncertainties affecting the application of these policies and estimates may result in materially different amounts being reported under different conditions and circumstances. See Note 1 to the Consolidated Financial Statements, Principles of Consolidation.

24

Table of Contents

        Revenue Recognition:    Rental income from residential and commercial properties is recognized over the term of the related lease. For residential tenants, amounts 60 days in arrears are charged against income. The commercial tenants are evaluated on a case by case basis. Certain leases of the commercial properties provide for increasing stepped minimum rents, which are accounted for on a straight-line basis over the term of the lease. Concessions made on residential leases are also accounted for on the straight-line basis.

        Discontinued Operations and Rental Property Held for Sale:    When assets are identified by management as held for sale, the Partnership discontinues depreciating the assets and estimates the sales price, net of selling costs, of such assets. If, in management's opinion, the net sales price of the assets which have been identified as held for sale is less than the net book value of the assets, a valuation allowance is established. Properties identified as held for sale and/or sold are presented in discontinued operations for all periods presented.

        If circumstances arise that previously were considered unlikely and, as a result, the Partnership decides not to sell a property previously classified as held for sale, the property is reclassified as held and used. A property that is reclassified is measured and recorded individually at the lower of (a) its carrying amount before the property was classified as held for sale, adjusted for any depreciation (amortization) expense that would have been recognized had the property been continuously classified as held and used, or (b) the fair value at the date of the subsequent decision not to sell.

        Rental Properties:    Rental properties are stated at cost less accumulated depreciation. Maintenance and repairs are charged to expense as incurred; improvements and additions are capitalized. When assets are retired or otherwise disposed of, the cost of the asset and related accumulated depreciation is eliminated from the accounts, and any gain or loss on such disposition is included in income. Fully depreciated assets are removed from the accounts. Rental properties are depreciated by both straight-line and accelerated methods over their estimated useful lives. Upon acquisition of rental property, the Partnership estimates the fair value of acquired tangible assets, consisting of land, building and improvements, and identified intangible assets and liabilities assumed, generally consisting of the fair value of (i) above and below market leases, (ii) in-place leases and (iii) tenant relationships. The Partnership allocated the purchase price to the assets acquired and liabilities assumed based on their fair values. The Partnership records goodwill or a gain on bargain purchase (if any) if the net assets acquired/liabilities assumed exceed the purchase consideration of a transaction. In estimating the fair value of the tangible and intangible assets acquired, the Partnership considers information obtained about each property as a result of its due diligence and marketing and leasing activities, and utilizes various valuation methods, such as estimated cash flow projections utilizing appropriate discount and capitalization rates, estimates of replacement costs net of depreciation, and available market information. The fair value of the tangible assets of an acquired property considers the value of the property as if it were vacant.

        Other intangible assets acquired include amounts for in-place lease values and tenant relationship values, which are based on management's evaluation of the specific characteristics of each tenant's lease and the Partnership's overall relationship with the respective tenant. Factors to be considered by management in its analysis of in-place lease values include an estimate of carrying costs during hypothetical expected lease-up periods considering current market conditions, and costs to execute similar leases at market rates during the expected lease-up periods, depending on local market conditions. In estimating costs to execute similar leases, management considers leasing commissions, legal and other related expenses. Characteristics considered by management in valuing tenant relationships include the nature and extent of the Partnership's existing business relationships with the tenant, growth prospects for developing new business with the tenant, the tenant's credit quality and expectations of lease renewals. The value of in-place leases are amortized to expense over the remaining initial terms of the respective leases. The value of tenant relationship intangibles are amortized to expense over the anticipated life of the relationships.

25

Table of Contents

        In the event that facts and circumstances indicate that the carrying value of a rental property may be impaired, an analysis of the value is prepared. The estimated future undiscounted cash flows are compared to the asset's carrying value to determine if a write-down to fair value is required.

        Impairment:    On an annual basis management assesses whether there are any indicators that the value of the Partnership's rental properties may be impaired. A property's value is impaired only if management's estimate of the aggregate future cash flows (undiscounted and without interest charges) to be generated by the property is less than the carrying value of the property. To the extent impairment has occurred, the loss shall be measured as the excess of the carrying amount of the property over the fair value of the property. The Partnership's estimates of aggregate future cash flows expected to be generated by each property are based on a number of assumptions that are subject to economic and market uncertainties including, among others, demand for space, competition for tenants, changes in market rental rates, and costs to operate each property. As these factors are difficult to predict and are subject to future events that may alter management's assumptions, the future cash flows estimated by management in its impairment analyses may not be achieved. The Partnership has not recognized an impairment loss since 1995.

        Rental Property Held for Sale and Discontinued Operations:    When assets are identified by management as held for sale, the Partnership discontinues depreciating the assets and estimates the sales price, net of selling costs, of such assets. If, in management's opinion, the net sales price of the assets which have been identified as held for sale is less than the net book value of the assets, a valuation allowance is established. Properties identified as held for sale and/or sold are presented in discontinued operations for all periods presented.

        Investments in Partnerships:    The Partnership accounts for its 40%-50% ownership in the Investment Properties under the equity method of accounting, as it exercises significant influence over, but does not control these entities. These investments are recorded initially at cost, as Investments in Partnerships, and subsequently adjusted for the Partnership's share in earnings, cash contributions and distributions. Under the equity method of accounting, our net equity is reflected on the consolidated balance sheets, and our share of net income or loss from the Partnership is included on the consolidated statements of income.

        With respect to investments in and advances to the Investment Properties, the Partnership looks to the underlying properties to assess performance and the recoverability of carrying amounts for those investments in a manner similar to direct investments in real estate properties. An impairment charge is recorded if management's estimate of the aggregate future cash flows (undiscounted and without interest charges) to be generated by the property is less than the carrying value of the property.

        Legal Proceedings:    The Partnership is subject to various legal proceedings and claims that arise, from time to time, in the ordinary course of business. These matters are frequently covered by insurance. If it is determined that a loss is likely to occur, the estimated amount of the loss is recorded in the financial statements. Both the amount of the loss and the point at which its occurrence is considered likely can be difficult to determine.

RESULTS OF OPERATIONS

Years Ended December 31, 2011 and December 31, 2010

        The Partnership and its Subsidiary Partnerships earned income before interest expense, loss from investments in unconsolidated joint ventures and other income and loss of approximately $11,365,000 during the year ended December 31, 2011, compared to approximately $10,339,000 for the year ended December 31, 2010, an increase of approximately $1,025,000 (9.9%).

26

Table of Contents

        The rental activity is summarized as follows: