APARTMENT INVESTMENT & MANAGEMENT CO - Annual Report: 2019 (Form 10-K)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

(Mark One)

For the fiscal year ended December 31, 2019

OR

For the transition period from            to            

Commission file number 1-13232 (Apartment Investment and Management Company)

Commission file number 0-24497 (AIMCO Properties, L.P.)

Apartment Investment and Management Company

AIMCO Properties, L.P.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code (303) 757-8101

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

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

None (Apartment Investment and Management Company)

Partnership Common Units (AIMCO Properties, L.P.)

(title of each class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined by Rule 405 of the Securities Act.

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.

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.

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files).

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

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Apartment Investment and Management Company:

AIMCO Properties, L.P.:

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

The aggregate market value of the voting and non-voting common stock of Apartment Investment and Management Company held by non-affiliates of Apartment Investment and Management Company was approximately $7.4 billion based upon the closing price of $50.12 on June 30, 2019.

As of February 21, 2020, there were 148,930,402 shares of Class A Common Stock outstanding.

Documents Incorporated by Reference

Portions of Apartment Investment and Management Company’s definitive proxy statement to be issued in conjunction with Apartment Investment and Management Company’s annual meeting of stockholders to be held April 28, 2020, are incorporated by reference into Part III of this Annual Report.

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EXPLANATORY NOTE

This filing combines the Annual Reports on Form 10-K for the fiscal year ended December 31, 2019, of Apartment Investment and Management Company, or Aimco, and AIMCO Properties, L.P., or the Aimco Operating Partnership. Where it is important to distinguish between the two entities, we refer to them specifically. Otherwise, references to “we,” “us,” or “our” mean collectively Aimco, the Aimco Operating Partnership, and their consolidated entities.

Aimco, a Maryland corporation, is a self-administered and self-managed real estate investment trust, or REIT. Aimco, through wholly-owned subsidiaries, is the general and special limited partner of and, as of December 31, 2019, owned a 94.0% ownership interest in the common partnership units of the Aimco Operating Partnership. The remaining 6.0% interest is owned by limited partners. As the sole general partner of the Aimco Operating Partnership, Aimco has exclusive control of the Aimco Operating Partnership’s day-to-day management.

The Aimco Operating Partnership holds all of Aimco’s assets and manages the daily operations of Aimco’s business. Pursuant to the Aimco Operating Partnership agreement, Aimco is required to contribute to the Aimco Operating Partnership all proceeds from the offerings of its securities. In exchange for the contribution of such proceeds, Aimco receives additional interests in the Aimco Operating Partnership with similar terms (e.g., if Aimco contributes proceeds of a stock offering, Aimco receives partnership units with terms substantially similar to the stock issued by Aimco).

We believe combining the periodic reports of Aimco and the Aimco Operating Partnership into this single report provides the following benefits:

We operate Aimco and the Aimco Operating Partnership as one enterprise, the management of Aimco directs the management and operations of the Aimco Operating Partnership, and the members of the Board of Directors of Aimco are identical to those of the Aimco Operating Partnership’s general partner.

We believe it is important to understand the few differences between Aimco and the Aimco Operating Partnership in the context of how Aimco and the Aimco Operating Partnership operate as a consolidated company. Aimco has no assets or liabilities other than its investment in the Aimco Operating Partnership. Also, Aimco is a corporation that issues publicly traded equity from time to time, whereas the Aimco Operating Partnership is a partnership that has no publicly traded equity. Except for the net proceeds from stock offerings by Aimco, which are contributed to the Aimco Operating Partnership in exchange for additional limited partnership interests (of a similar type and in an amount equal to the shares of stock sold in the offering), the Aimco Operating Partnership generates all remaining capital required by its business. These sources include the Aimco Operating Partnership’s working capital, net cash provided by operating activities, borrowings under its revolving credit facility, the issuance of debt and equity securities, including additional partnership units, and proceeds received from the sale of apartment communities.

Equity, partners’ capital, and noncontrolling interests are the main areas of difference between the consolidated financial statements of Aimco and those of the Aimco Operating Partnership. Interests in the Aimco Operating Partnership held by entities other than Aimco, which we refer to as OP Units, are classified within partners’ capital in the Aimco Operating Partnership’s financial statements and as noncontrolling interests in Aimco’s financial statements.

To help investors understand the differences between Aimco and the Aimco Operating Partnership, this report provides separate consolidated financial statements for Aimco and the Aimco Operating Partnership; a single set of consolidated notes to such financial statements that includes separate discussions of each entity’s stockholders’ equity or partners’ capital, and earnings per share or earnings per unit, as applicable; and a combined Management’s Discussion and Analysis of Financial Condition and Results of Operations section that includes discrete information related to each entity.

This report also includes separate Part II, Item 9A. Controls and Procedures sections and separate Exhibits 31 and 32 certifications for Aimco and the Aimco Operating Partnership in order to establish that the requisite certifications have been made and that Aimco and the Aimco Operating Partnership are both compliant with Rule 13a-15 or Rule 15d-15 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and 18 U.S.C. §1350.

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APARTMENT INVESTMENT AND MANAGEMENT COMPANY

AIMCO PROPERTIES, L.P.

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ANNUAL REPORT ON FORM 10-K

For the Fiscal Year Ended December 31, 2019

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FORWARD-LOOKING STATEMENTS

The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” for forward-looking statements in certain circumstances. Certain information included in this Annual Report contains or may contain information that is forward-looking, within the meaning of the federal securities laws, including, without limitation, statements regarding: our ability to maintain current or meet projected occupancy, rental rate and property operating results; the effect of acquisitions, dispositions, redevelopments, and developments; our ability to meet budgeted costs and timelines, and achieve budgeted rental rates related to our redevelopment and development investments; expectations regarding sales of our apartment communities and the use of proceeds thereof; and our ability to comply with debt covenants, including financial coverage ratios.

Actual results may differ materially from those described in these forward-looking statements and, in addition, will be affected by a variety of risks and factors, some of which are beyond our control, including, without limitation:

In addition, our current and continuing qualification as a real estate investment trust involves the application of highly technical and complex provisions of the Internal Revenue Code and depends on our ability to meet the various requirements imposed by the Internal Revenue Code, through actual operating results, distribution levels and diversity of stock ownership.

Readers should carefully review our financial statements and the notes thereto, as well as the section entitled “Risk Factors” described in Item 1A of this Annual Report and the other documents we file from time to time with the Securities and Exchange Commission.

As used herein and except as the context otherwise requires, “we,” “our,” and “us” refer to Apartment Investment and Management Company (which we refer to as Aimco), AIMCO Properties, L.P. (which we refer to as the Aimco Operating Partnership) and their consolidated entities, collectively.

Certain financial and operating measures found herein and used by management are not defined under accounting principles generally accepted in the United States, or GAAP. These measures are defined and reconciled to the most comparable GAAP measures under the Non-GAAP Measures heading and include: Nareit Funds From Operations, Pro forma Funds From Operations, Adjusted Funds From Operations, Free Cash Flow, Net Asset Value, Economic Income, and the measures used to compute our leverage ratios.

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PART I

ITEM 1. BUSINESS

The Company

Aimco is a Maryland corporation incorporated on January 10, 1994. Aimco is a self-administered and self-managed real estate investment trust, or REIT, focused on the ownership, management, redevelopment, and some development of quality apartment communities located in several of the largest markets in the United States. Those markets include: Atlanta; the San Francisco Bay Area; Boston; Chicago; Denver; Greater New York City; Greater Washington, D.C.; Los Angeles; Miami/Dade County; Philadelphia; San Diego; and Seattle.

Aimco, through its wholly owned subsidiaries, AIMCO-GP, Inc. and AIMCO-LP Trust, owns a majority of the ownership interests in the Aimco Operating Partnership, a Delaware limited partnership formed on May 16, 1994. Aimco conducts all of its business and owns all of its assets through the Aimco Operating Partnership.

Please refer to Note 13 to the consolidated financial statements in Item 8 for discussion regarding our segments.

Business Overview

Our business activities are defined by a commitment to our core values of integrity, respect, collaboration, performance, and a focus on our customers. These values and our corporate mission, “to consistently provide quality apartment homes in a respectful environment delivered by a team of people who care,” shape our culture. In all of our interactions with residents, team members, business partners, lenders, and equity holders, we aim to be the best owner and operator of apartment communities and an outstanding corporate citizen.

Our principal financial objective is to provide predictable and attractive returns to our equity holders. We measure our long- term total return using Economic Income, defined as Net Asset Value, or NAV, growth plus dividends. NAV is used by many investors because the value of company assets can be readily estimated, even for non-earning assets such as land or properties under development. NAV has the advantage of incorporating the investment decisions of thousands of real estate investors, enhancing comparability among companies that have differences in their accounting and avoiding disparity that can result from application of GAAP to investment properties and various ownership structures. Over the past five years as of December 31, 2019, we have generated Economic Income at a compounded annual return of 10%. Some investors focus on multiples of Adjusted Funds From Operations, or AFFO, and Funds From Operations as defined by Nareit, or Nareit FFO. Our disclosure of AFFO, a measure of current return, complements our focus on Economic Income. We also use Pro forma Funds From Operations, or Pro forma FFO, as a secondary measure of operational performance.

Our business plan to achieve our principal financial objective is to:

The results from the execution of our business plan are discussed in the Executive Overview in Item 7.

Our business is organized around five areas of strategic focus: operational excellence; redevelopment and development; portfolio management; balance sheet; and team and culture.

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Operational Excellence

We own and operate a portfolio of apartment communities, diversified by both geography and price point. As of December 31, 2019, our portfolio included 124 apartment communities with 32,839 apartment homes in which we held an average ownership of approximately 99%, and approximately 80% of the value of our portfolio, measured by gross asset value (the estimated fair value of our communities), was attributable to Same Store communities.

To manage our property operations efficiently and to increase the benefits from our local management expertise, we give direct responsibility for operations within each area to area operations leaders with regular oversight by senior management. To enable the area operations leaders to focus on sales and service, as well as to improve financial control and budgeting, we have dedicated area financial officers who support the operations leaders. Additionally, with the exception of routine maintenance and purchases and installation of equipment, we have specialized teams that manage capital spending related to larger and more complicated construction.

We seek to improve our property operations by: employing service-oriented, well-trained team members; taking advantage of advances in technology; increasing automation; centralizing operational tasks where efficient to do so; standardizing business processes, operational measurements, and internal reporting; and enhancing financial controls over field operations. We focus on the following areas:

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Redevelopment and Development

Our second line of business is the redevelopment and some development of apartment communities. Through redevelopment activities, we expect to create value by repositioning apartment communities within our portfolio. We undertake ground-up development when warranted by risk-adjusted investment returns, either directly or in connection with the redevelopment of an existing apartment community. When warranted, we rely on the expertise and credit of a third-party developer familiar with the local market to limit our exposure to construction risk. Over the past five years, we have spent approximately $1.0 billion on redevelopment and development, targeting FCF internal rates of return of approximately 9% to 11% on these investments.

We undertake a range of redevelopments, including: those in which buildings or exteriors are renovated without the need to vacate a significant percentage of apartment homes, or short-cycle redevelopments; those in which significant renovation of apartment homes may be accomplished upon lease expiration and turnover; and those in which an entire building or community is vacated, or long-cycle redevelopments. We often execute redevelopment using a phased approach, in which we renovate an apartment community in stages. Redevelopment work may include seeking entitlements from local governments, which enhance the value of our existing portfolio by increasing density; that is, the right to add apartment homes to a site.

We invest to earn risk-adjusted returns in excess of those expected from the communities sold in paired trades to fund the redevelopment or development. Of these two activities, we generally favor redevelopment because it permits adjustment to the scope and timing of spending to align with changing market conditions and customer preferences.

Portfolio Management

Our portfolio management strategy involves the allocation of investment capital to enhance rent growth and increase long-term capital values through portfolio design, emphasizing land value as well as location and submarket. We target geographic diversification in our portfolio in order to reduce the volatility of our rental revenue and to reduce the risk of undue concentration in any particular market. Similarly, we seek price point diversification by owning apartment communities that offer apartment homes at rents below those asked by competitive new building supply.

Our portfolio of apartment communities is diversified across “A,” “B,” and “C+” price points, averaging “B/B+” in quality and is also diversified across several of the largest markets in the United States. Please refer to the Executive Overview section in Item 7 for a description of our portfolio quality ratings. As of December 31, 2019, our portfolio was allocated about one-half to “A” rated properties, and about one-half to “B” and “C+” rated properties.

As part of our portfolio strategy, we seek to sell up to 10% of our portfolio annually and to reinvest the proceeds from such sales in accretive uses such as capital enhancements, redevelopments, some developments, and selective acquisitions with projected FCF internal rates of return higher than expected from the communities being sold. Through this disciplined approach to capital recycling, we increase the quality and expected growth rate of our portfolio.

Balance Sheet

Our leverage strategy seeks to increase financial returns by using leverage with appropriate caution. We limit risk through our balance sheet structure, employing low leverage, primarily non-recourse and long-dated property debt; build financial flexibility by maintaining ample unused and available credit as well as holding properties with substantial value unencumbered by property debt; and use partners’ capital when it enhances financial returns or reduces investment risk.

Our leverage includes our share of long-term, non-recourse, property debt encumbering apartment communities, outstanding borrowings under our revolving credit facility, outstanding preferred equity, and redeemable noncontrolling interests in a consolidated real estate partnership.

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We target a ratio of Proportionate Debt and Preferred Equity to adjusted earnings before interest, taxes, depreciation, and amortization for real estate, or Adjusted EBITDAre, as defined by Nareit, below 7.0x and we target a ratio of Adjusted EBITDAre to Adjusted Interest Expense and Preferred Dividends greater than 2.5x. 

Our ratios as of December 31, 2019, were 7.6x and 3.5x, respectively. We delayed approximately $300 million of sales originally planned for fourth quarter 2019 and January 2020, which increased Proportionate Debt to Adjusted EBITDAre and Proportionate Debt and Preferred Equity to Adjusted EBITDAre by 0.3x as of December 31, 2019. We expect a gradual decline in leverage to EBITDAre ratios throughout 2020, reaching approximately 6.4x and 6.5x, respectively, at year end. In future years, we expect earnings growth from completed redevelopments will increase EBITDAre and further reduce our leverage ratios.

Please refer to the Leverage Ratios subsection to the Non-GAAP Measures section in Item 7 for additional information regarding our leverage ratios.

Our liquidity consists of cash balances and available capacity on our revolving credit facility. As of December 31, 2019, we had cash and restricted cash of $177.7 million and had capacity to borrow $517.8 million under our revolving credit facility.

We manage our financial flexibility by maintaining an investment grade rating and holding apartment communities that are unencumbered by property debt. As of December 31, 2019, we held unencumbered communities with an estimated fair market value of approximately $2.4 billion.

Please refer to the Executive Overview and Liquidity and Capital Resources sections in Item 7 for additional information regarding our balance sheet and liquidity.

Team and Culture

Our team and culture are keys to our success. Our intentional focus on a collaborative and productive culture based on respect for others and personal responsibility is reinforced by a preference for promotion from within. We focus on succession planning and talent development to produce a strong, stable team that is the enduring foundation of our success. We offer benefits reinforcing our value of caring for each other, including paid time for parental leave, paid time annually to volunteer in local communities, college scholarships for the children of team members, an emergency fund to help team members in crisis, financial support for our team members who are becoming United States citizens, and a bonus structure at all levels of the organization. We also pay full compensation and benefits for team members who are actively deployed by the United States military. Out of hundreds of participating companies in 2019, Aimco was one of only seven recognized as a “Top Workplace” in Colorado for each of the past seven years. Aimco was also recognized as a Top Workplace in the Bay Area in 2019. Also in 2019, Aimco was the only real estate company to receive a BEST award from the Association for Talent Development in recognition of our company-wide success in talent development, marking our second consecutive year receiving this award.

Competition

In attracting and retaining residents to occupy our apartment communities we compete with numerous other housing providers. Our apartment communities compete directly with other rental apartments, as well as condominiums and single-family homes that are available for rent or purchase in the markets in which our apartment communities are located. Principal factors of competition include rent or price charged, attractiveness of the location and apartment community, and the quality and breadth of services. The number of competitive apartment communities relative to demand in a particular area has a material effect on our ability to lease apartment homes at our apartment communities and on the rents we charge. In certain markets, there exists an oversupply of newly-constructed apartment homes, single-family homes, and condominiums relative to consumer demand, which affects the pricing and occupancy of our rental apartments.

We also compete with other real estate investors, including other apartment REITs, pension and investment funds, partnerships, and investment companies in acquiring, redeveloping, managing, obtaining financing for, and disposing of apartment communities. This competition affects our ability to acquire apartment communities we want to add to our portfolio and the price that we pay in such acquisitions; our ability to finance or refinance communities in our portfolio and the cost of such financing; and our ability to dispose of communities we no longer desire to retain in our portfolio and the timing and price available to us when we seek to dispose of such communities.

Taxation

Aimco

Aimco has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended, which we refer to as the Code, commencing with our taxable year ended December 31, 1994, and intends to continue to operate in such a manner. The Code imposes various requirements related to organizational structure, distribution levels, diversity of stock ownership, and

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certain restrictions with regard to owned assets and categories of income that must be met in order to continue to qualify as a REIT. If Aimco continues to qualify for taxation as a REIT, Aimco will generally not be subject to United States federal corporate income tax on its taxable income that is currently distributed to stockholders. This treatment substantially eliminates the “double taxation” (at the corporate and stockholder levels) that generally results from an investment in a corporation.

Certain of Aimco’s operations, or a portion thereof, including property management and risk management are conducted through taxable REIT subsidiaries, each of which we refer to as a TRS. A TRS is a subsidiary C-corporation that has not elected REIT status and, as such, is subject to United States federal corporate income tax. We use TRS entities to facilitate our ability to offer certain services and activities to our residents and investment partners that cannot be offered directly by a REIT. We also use TRS entities to hold investments in certain apartment communities.

The Aimco Operating Partnership

The Aimco Operating Partnership is treated as a “pass-through” entity for United States federal income tax purposes and is not subject to United States federal income taxation. Partners in the Aimco Operating Partnership, however, are subject to tax on their allocable share of partnership income, gains, losses, deductions, and credits, regardless of whether the partners receive any actual distributions of cash or other property from the Aimco Operating Partnership during the taxable year. Generally, the characterization of any particular item is determined by the Aimco Operating Partnership, rather than at the partner level, and the amount of a partner’s allocable share of such item is governed by the terms of the Aimco Operating Partnership’s Partnership Agreement. The Aimco Operating Partnership is subject to tax in certain states.

Regulation

General

Apartment communities and their owners are subject to various laws, ordinances, and regulations, including those related to real estate broker licensing and regulations relating to recreational facilities such as swimming pools, activity centers, and other common areas. Changes in laws increasing the potential liability for environmental conditions existing on communities or increasing the restrictions on discharges or other conditions, as well as changes in laws affecting development, construction, and safety requirements, may result in significant unanticipated expenditures, which would adversely affect our net income and cash flows from operating activities. In addition, existing rent control laws, as well as future enactment of rent control or rent stabilization laws, or other laws regulating multifamily housing, may reduce rental revenue or increase operating costs in particular markets.

Environmental

Various federal, state, and local laws subject apartment community owners or operators to liability for management, and the costs of removal or remediation, of certain potentially hazardous materials that may be present at an apartment community. These materials may include lead-based paint, asbestos, polychlorinated biphenyls, and petroleum-based fuels. Such laws often impose liability without regard to fault or whether the owner or operator knew of, or was responsible for, the release or presence of such materials. In connection with the ownership, operation, and management of apartment communities, we could potentially be liable for environmental liabilities or costs associated with our current communities, communities we acquire or manage in the future, or communities we previously owned or operated in the past. These and other risks related to environmental matters are described in more detail in Item 1A. Risk Factors.

Corporate Responsibility

At Aimco, corporate responsibility is an important part of our business. As with all other aspects of our business, our corporate responsibility program focuses on continuous improvement, to the benefit of our stockholders, our residents, our team members, our communities, and the environment. Highlights of our corporate responsibility program can be found in our proxy statement for Aimco’s 2020 annual meeting of stockholders and is incorporated herein by reference.

Insurance

Our primary lines of insurance coverage are property, general liability, and workers’ compensation. We believe that our insurance coverages adequately insure our apartment communities against the risk of loss attributable to fire, earthquake, hurricane, tornado, flood, terrorism, and other perils, and adequately insure us against other risk. Our coverage includes deductibles, retentions, and limits that are customary in the industry. We have established loss prevention, loss mitigation, claims handling, and litigation management procedures to manage our exposure.

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Employees

As of December 31, 2019, we had approximately 950 team members, of whom about 600 were at the apartment community level performing on-site functions or at our shared service center performing tasks that have been centralized there, with the balance managing corporate and area functions, including investment and debt transactions, legal, finance and accounting, information systems, human resources, and other support functions. As of December 31, 2019, unions represented approximately 50 of our team members. We have never experienced a work stoppage and believe we maintain satisfactory relations with our team members.

Available Information

Our combined Annual Report on Form 10-K, our combined Quarterly Reports on Form 10-Q, Current Reports on Form 8-K filed by Aimco or the Aimco Operating Partnership, and any amendments to any of those reports that we file with the Securities and Exchange Commission are available free of charge as soon as reasonably practicable through Aimco’s website at www.aimco.com. The information contained on Aimco’s website is not incorporated into this Annual Report.

ITEM 1A. RISK FACTORS

The risk factors noted in this section, and other factors noted throughout this Annual Report, describe certain risks and uncertainties that could cause our actual results to differ materially from those contained in any forward-looking statement.

Risks Related to Our Real Estate Investments and Our Operations

Redevelopment, development, and construction risks could affect our profitability.

We are currently redeveloping and developing certain of our apartment communities. During 2020, we expect to invest $250 million to $300 million in redevelopment and development activities. Redevelopment and development are subject to numerous risks, including the following:

Failure to generate sufficient net operating income may adversely affect our liquidity, limit our ability to fund necessary capital expenditures, or adversely affect our ability to pay dividends or distributions.

Our ability to fund necessary capital expenditures on our communities depends on, among other things, our ability to generate net operating income in excess of required debt payments. If we are unable to fund capital expenditures on our communities, we may not be able to preserve the competitiveness of our communities, which could adversely affect their net operating income and long-term value.

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Our ability to make payments to our investors depends on our ability to generate net operating income in excess of required debt payments and capital expenditure requirements. Our net operating income and liquidity may be adversely affected by events or conditions beyond our control, including:

Competition could limit our ability to lease apartment homes or increase or maintain rents.

Our apartment communities compete for residents with other housing alternatives, including other rental apartments and condominiums, and, to a lesser degree, single-family homes that are available for rent, as well as new and existing condominiums and single-family homes for sale. Competitive residential housing, as well as household formation and job creation in a particular area, could adversely affect our ability to lease apartment homes and to increase or maintain rental rates.

Because real estate investments are relatively illiquid, we may not be able to sell apartment communities when appropriate.

Real estate investments are relatively illiquid and generally cannot be sold quickly. REIT tax rules also restrict our ability to sell apartment communities. Thus, we may not be able to change our portfolio promptly in response to changes in economic or other market conditions. Our ability to dispose of apartment communities in the future will depend on prevailing economic and market conditions, including the cost and availability of financing. This could have a material adverse effect on our financial condition or results of operations.

If we are not successful in our acquisition of apartment communities, our results of operations could be adversely affected.

The selective acquisition of apartment communities is a component of our strategy. However, we may not be able to complete transactions successfully in the future. Although we seek to acquire apartment communities when such acquisitions increase our FCF internal rates of return and are accretive to NAV, such transactions may fail to perform in accordance with our expectations. In particular, following acquisition, the value and operational performance of an apartment community may be diminished if obsolescence or neighborhood changes occur before we are able to redevelop or sell the apartment community. This could have an adverse effect on our financial condition or results of operations.

Potential liability or other expenditures associated with potential environmental contamination may be costly.

Various federal, state, and local laws subject apartment community owners or operators to liability for management, and the costs of removal or remediation, of certain potentially hazardous materials that may be present in the land or buildings of an apartment community. Potentially hazardous materials may include polychlorinated biphenyls, petroleum-based fuels, lead-based paint, or asbestos, among other materials. Such laws often impose liability without regard to fault or whether the owner or operator knew of, or was responsible for, the presence of such materials. The presence of, or the failure to manage or remediate properly, these materials may adversely affect occupancy at such apartment communities as well as the ability to sell or finance such apartment communities. In addition, governmental agencies may bring claims for costs associated with investigation and remediation actions, damages to natural resources and for potential fines or penalties in connection with such damage or with respect to the improper management of hazardous materials. Moreover, private plaintiffs may potentially make claims for investigation and remediation costs they incur or personal injury, disease, disability, or other infirmities related to the alleged presence of hazardous materials at an apartment community. In addition to potential environmental liabilities or costs associated with our current apartment communities, we may also be responsible for such liabilities or costs associated with communities we acquire or manage in the future, or apartment communities we no longer own or operate.

Laws benefiting disabled persons may result in our incurrence of unanticipated expenses.

Under the Americans with Disabilities Act of 1990, or ADA, all places intended to be used by the public are required to meet certain federal requirements related to access and use by disabled persons. The Fair Housing Amendments Act of 1988, or FHAA, requires apartment communities first occupied after March 13, 1991, to comply with design and construction

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requirements for disabled access. For those apartment communities receiving federal funds, the Rehabilitation Act of 1973 also has requirements regarding disabled access. These and other federal, state, and local laws may require structural modifications to our apartment communities or changes in policy/practice, or affect renovations of the communities. Noncompliance with these laws could result in the imposition of fines or an award of damages to private litigants and also could result in an order to correct any non-complying feature, which could result in substantial capital expenditures. Although we believe that our apartment communities are substantially in compliance with present requirements, we may incur unanticipated expenses to comply with the ADA, the FHAA, and the Rehabilitation Act of 1973 in connection with the ongoing operation or redevelopment of our apartment communities.

Moisture infiltration and resulting mold remediation may be costly.

Although we are proactively engaged in managing moisture intrusion and preventing the presence of mold at our apartment communities, it is not unusual for periodic moisture intrusion to cause mold in isolated locations within an apartment community. We have implemented policies, procedures, and training, and include a detailed moisture intrusion and mold assessment during acquisition due diligence. We believe these measures will manage mold exposure at our apartment communities and will minimize the effects that mold may have on our residents. To date, we have not incurred any material costs or liabilities relating to claims of mold exposure or to abate mold conditions. We have only limited insurance coverage for property damage claims arising from the presence of mold and for personal injury claims related to mold exposure.

Although we are insured for certain risks, the cost of insurance, increased claims activity, or losses resulting from casualty events may affect our operating results and financial condition.

We are insured for a portion of our consolidated apartment communities’ exposure to casualty losses resulting from fire, earthquake, hurricane, tornado, flood, and other perils, which insurance is subject to deductibles and self-insurance retention. We recognize casualty losses or gains based on the net book value of the affected apartment community and the amount of any related insurance proceeds. In many instances, the actual cost to repair or replace the apartment community may exceed its net book value and any insurance proceeds. We recognize the uninsured portion of losses as casualty losses in the periods in which they are incurred. In addition, we are self-insured for a portion of our exposure to third-party claims related to our employee health insurance plans, workers’ compensation coverage, and general liability exposure. With respect to our exposure to claims of third parties, we establish reserves at levels that reflect our known and estimated losses. The ultimate cost of losses and the impact of unforeseen events may vary materially from recorded reserves, and variances may adversely affect our operating results and financial condition. We purchase insurance to reduce our exposure to losses and limit our financial losses on large individual risks. The availability and cost of insurance are determined by market conditions outside our control. No assurance can be made that we will be able to obtain and maintain insurance at the same levels and on the same terms as we do today. If we are not able to obtain or maintain insurance in amounts we consider appropriate for our business, or if the cost of obtaining such insurance increases materially, we may have to retain a larger portion of the potential loss associated with our exposures to risks.

Natural disasters and severe weather may affect our operating results and financial condition.

Natural disasters such as earthquakes and severe weather such as hurricanes may result in significant damage to our apartment communities. The extent of our casualty losses and loss in operating income in connection with such events is a function of the severity of the event and the total amount of exposure in the affected area. When we have geographic concentration of exposures, a single catastrophe (such as an earthquake) or destructive weather event (such as a hurricane) affecting a region may have a significant adverse effect on our financial condition and results of operations. We cannot accurately predict natural disasters or severe weather, or the number and type of such events that will affect us. As a result, our operating and financial results may vary significantly from one period to the next. Although we anticipate and plan for losses, there can be no assurance that our financial results will not be adversely affected by our exposure to losses arising from natural disasters or severe weather in the future that exceed our previous experience and assumptions.

We depend on our senior management.

Our success depends upon the retention of our senior management, including Terry Considine, our chief executive officer. We have a succession planning and talent development process that is designed to identify potential replacements and develop our team members to provide depth in the organization and a bench of talent on which to draw. However, there are no assurances that we would be able to find qualified replacements for the individuals who make up our senior management if their services were no longer available. The loss of services of one or more members of our senior management team could have a material adverse effect on our business, financial condition and results of operations. We do not currently maintain key-man life insurance for any of our employees.

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Our business and operations would suffer in the event of significant disruptions or cyber attacks of our information technology systems or our failure to comply with laws, rules and regulations related to privacy and data protection.

Information technology, communication networks, and related systems are essential to the operation of our business. We use these systems to manage our resident and vendor relationships, internal communications, accounting and record-keeping systems, and many other key aspects of our business. Our operations rely on the secure processing, storage, and transmission of confidential and other information in our computer systems and networks, which also depend on the strength of our procedures and the effectiveness of our internal controls. Information security risks have generally increased in recent years due to the rise in new technologies and the increased sophistication and activities of perpetrators of cyber attacks.

Despite system redundancy, risk transfer, insurance, indemnification, the implementation of security measures, required employee awareness training, and the existence of a disaster recovery plan for our internal information technology systems, our systems and systems maintained by third party vendors with which we do business are vulnerable to damage from any number of sources. We face risks associated with energy blackouts, natural disasters, terrorism, war, telecommunication failures, and cyber attacks and intrusions, such as computer viruses, malware, attachments to e-mails, intrusion, and unauthorized access, including from persons inside our organization or from persons outside our organization with access to our systems. We may also incur additional costs to remedy damages caused by such disruptions. Although we make efforts to maintain the security and integrity of our systems and have implemented various measures to manage the risk of a security breach or disruption, there can be no assurance that our security efforts and measures will be effective or that attempted security breaches or disruptions would not be successful or damaging. Any compromise of our security could also result in a violation of applicable privacy and other laws, significant legal and financial exposure, damage to our reputation, loss or misuse of the information (which may be confidential, proprietary, and/or commercially sensitive in nature), and a loss of confidence in our security measures, which could harm our business.

We also are subject to laws, rules, and regulations in the United States, such as the California Consumer Protection Act, or CCPA (which will become effective on January 1, 2020), relating to the collection, use, and security of employee and other data. Evolving compliance and operational requirements under the CCPA and the privacy laws of other jurisdictions in which we operate impose significant costs that are likely to increase over time. Our failure to comply with laws, rules, and regulations related to privacy and data protection could harm our business or reputation.

Risks Related to Our Indebtedness and Financing

Our existing and future debt financing could result in foreclosure of our apartment communities, prevent us from making distributions on our equity, or otherwise adversely affect our liquidity.

We are subject to the risk that our cash flow from operations will be insufficient to make required payments of principal and interest, and the risk that existing indebtedness may not be refinanced or that the terms of any refinancing will not be as favorable as the terms of existing indebtedness. If we fail to make required payments of principal and interest on our non-recourse debt, our lenders could foreclose on the apartment communities and other collateral securing such debt, which would result in the loss to us of income and asset value. As of December 31, 2019, the majority of our apartment communities were encumbered by debt. Our organizational documents do not limit the amount of debt that we may incur, and we have significant amounts of debt outstanding. Payments of principal and interest may leave us with insufficient cash resources to operate our communities or pay distributions required to be paid in order to maintain Aimco’s qualification as a REIT.

Disruptions in the financial markets could affect our ability to obtain financing and the cost of available financing and could adversely affect our liquidity.

Our ability to obtain financing and the cost of such financing depends on the overall condition of the United States credit markets. During periods of economic uncertainty the United States credit markets may experience significant liquidity disruptions, which may cause the spreads on debt financings to widen considerably and make obtaining financing, both non-recourse property debt and corporate borrowings such as those under our revolving credit agreement, more difficult. In particular, apartment borrowers have benefited from the historic willingness of Federal National Mortgage Association, or Fannie Mae, and the Federal Home Loan Mortgage Corporation, or Freddie Mac, to make substantial amounts of loans secured by multi-family properties, even in times of economic distress. These two lenders are federally chartered and subject to federal regulation, which is subject to change, making uncertain their prospects and ability to provide liquidity in a future downturn.

If our ability to obtain financing is adversely affected, we may be unable to satisfy scheduled maturities on existing financing through other sources of liquidity, which could result in lender foreclosure on the apartment communities securing such debt and loss of income and asset value, both of which would adversely affect our liquidity.

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Increases in interest rates would increase our interest expense and reduce our profitability.

As of December 31, 2019, we had approximately $445.1 million of variable-rate indebtedness outstanding. We estimate that an increase or decrease in 30-day LIBOR of 100 basis points with constant credit risk spreads would increase or reduce interest expense by approximately $4.5 million on an annual basis.

As of December 31, 2019, we had approximately $177.7 million in cash and cash equivalents and restricted cash, a portion of which bear interest at variable rates indexed to LIBOR-based rates, which may partially mitigate the effect of an increase in variable rates on our variable-rate indebtedness discussed above.

The potential phasing out of LIBOR after 2021 may affect our financial results.

In July 2017, the Financial Conduct Authority, which regulates LIBOR, announced it intends to stop compelling banks to submit rates for the calculation of LIBOR after 2021. In 2018, the Alternative Reference Rates Committee identified the Secured Overnight Financing Rate, or SOFR, as the alternative to LIBOR. Whether or not SOFR attains market traction as a LIBOR replacement remains a question, and the future of LIBOR at this time is uncertain. At this time, it is not possible to predict the effect of any such changes, any establishment of alternative reference rates or any other reforms to LIBOR that may be enacted in the United Kingdom or elsewhere. Due to the broad use of LIBOR as a reference rate, all financial market participants, including us, are impacted by the risks associated with this transition. Any of these proposals or consequences could have a material adverse effect on our financing costs, and as a result, our financial condition, operating results, and cash flows.

Covenant restrictions may limit our ability to make payments to our investors.

Some of our debt and other securities contain covenants that restrict our ability to make distributions or other payments to our investors unless certain financial tests or other criteria are satisfied. Our revolving credit agreement provides, among other things, that we may not make distributions to our investors during any four consecutive fiscal quarters in an aggregate amount greater than 95% of our Nareit FFO for such period, subject to certain non-cash adjustments, or such amount as may be necessary to maintain Aimco’s REIT status. Our outstanding preferred units prohibit the payment of dividends on our Common Stock or common partnership units if we fail to pay the dividends to which the holders of the preferred units are entitled.

Risks Related to Aimco’s Corporate Structure

The Aimco Operating Partnership and its subsidiaries may be prohibited from making distributions and other payments.

All of Aimco’s apartment communities are owned, and all of Aimco’s operations are conducted, by the Aimco Operating Partnership. Further, many of the Aimco Operating Partnership’s apartment communities are owned by subsidiaries of the Aimco Operating Partnership. As a result, Aimco depends on distributions and other payments from the Aimco Operating Partnership, and the Aimco Operating Partnership depends on distributions and payments from its subsidiaries in order to satisfy our financial obligations and make payments to our investors. The ability of the Aimco Operating Partnership and its subsidiaries to make such distributions and other payments depends on their earnings and cash flows and may be subject to statutory or contractual limitations. As an equity investor in the Aimco Operating Partnership and its subsidiaries, our right to receive assets upon their liquidation or reorganization will be effectively subordinated to the claims of their creditors. To the extent that we are recognized as a creditor of such subsidiaries, our claims may still be subordinate to any security interest in or other lien on their assets and to any of their debt or other obligations that are senior to our claims.

Limits on ownership of shares specified in Aimco’s charter may result in the loss of economic and voting rights by purchasers that violate those limits.

Aimco’s charter limits ownership of Common Stock by any single stockholder (applying certain “beneficial ownership” rules under the federal securities laws) to 8.7% (or up to 12.0% upon a waiver from Aimco’s Board of Directors) of outstanding shares of Common Stock, or 15% in the case of certain pension trusts, registered investment companies and Mr. Considine (or up to 20.0% for such pension trusts or registered investment companies upon a waiver from Aimco’s Board of Directors). Aimco’s charter also limits ownership of Aimco’s Common Stock and preferred stock by any single stockholder to 8.7% of the value of the outstanding Common Stock and preferred stock, or 15% in the case of certain pension trusts, registered investment companies, and Mr. Considine. The charter also prohibits anyone from buying shares of Aimco’s capital stock if the purchase would result in Aimco losing its REIT status. This could happen if a transaction results in fewer than 100 persons owning all of Aimco’s shares of capital stock or results in five or fewer persons (applying certain attribution rules of the Code) owning 50% or more of the value of all of Aimco’s shares of capital stock. If anyone acquires shares in excess of the ownership limit or in violation of the ownership requirements of the Code for REITs:

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Aimco may purchase the shares of capital stock held in trust at a price equal to the lesser of the price paid by the transferee of the shares or the then current market price. If the trust transfers any of the shares of capital stock, the affected person will receive the lesser of the price paid for the shares or the then current market price. An individual who acquires shares of capital stock that violate the above rules bears the risk that the individual:

Aimco’s charter may limit the ability of a third-party to acquire control of Aimco.

The 8.7% and other ownership limits discussed above may have the effect of delaying or precluding acquisition by a third-party of control of Aimco without the consent of Aimco’s Board of Directors. Aimco’s charter authorizes its Board of Directors to issue up to 510,587,500 shares of capital stock. As of December 31, 2019, 500,787,260 shares were classified as Common Stock, of which 148,885,197 were outstanding, and 9,800,240 shares were classified as preferred stock of which no shares were outstanding. Under Aimco’s charter, its Board of Directors has the authority to classify and reclassify any of Aimco’s unissued shares of capital stock into shares of capital stock with such preferences, conversion or other rights, voting power restrictions, limitations as to dividends, qualifications, or terms or conditions of redemptions as the Board of Directors may determine. The authorization and issuance of a new class of capital stock could have the effect of delaying or preventing someone from taking control of Aimco, where there is a difference of opinion between the Aimco Board of Directors and others as to what is in Aimco’s stockholders’ best interests.

The Maryland General Corporation Law may limit the ability of a third-party to acquire control of Aimco.

As a Maryland corporation, Aimco is subject to various Maryland laws that may have the effect of discouraging offers to acquire Aimco and increasing the difficulty of consummating any such offers, where there is a difference of opinion between the Aimco Board of Directors and others as to what is in Aimco’s stockholders’ best interests. The Maryland General Corporation Law, specifically the Maryland Business Combination Act, restricts mergers and other business combination transactions between Aimco and any person who acquires, directly or indirectly, beneficial ownership of shares of Aimco’s stock representing 10% or more of the voting power without Aimco’s Board of Directors’ prior approval. Any such business combination transaction could not be completed until five years after the person acquired such voting power, and generally only with the approval of stockholders representing 80% of all votes entitled to be cast and 66-2/3% of the votes entitled to be cast, excluding the interested stockholder, or upon payment of a fair price. The Maryland General Corporation Law, specifically the Maryland Control Share Acquisition Act, provides generally that a person who acquires shares of Aimco’s capital stock representing 10% or more of the voting power in electing directors will have no voting rights unless approved by a vote of two-thirds of the shares eligible to vote. Additionally, the Maryland General Corporation Law provides, among other things, that the Board of Directors has broad discretion in adopting stockholders’ rights plans and has the sole power to fix the record date, time, and place for special meetings of the stockholders. To date, Aimco has not adopted a stockholders’ rights plan. In addition, the Maryland General Corporation Law provides that a corporation that:

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To date, Aimco has not made any of the elections described above.

Risks Related to Tax Laws and Regulations

Aimco may fail to qualify as a REIT.

If Aimco fails to qualify as a REIT, Aimco will not be allowed a deduction for dividends paid to its stockholders in computing its taxable income, and will be subject to United States federal income tax at regular corporate rates. This would substantially reduce our funds available for distribution to our investors. Unless entitled to relief under certain provisions of the Code, Aimco also would be disqualified from taxation as a REIT for the four taxable years following the year during which it ceased to qualify as a REIT. In addition, Aimco’s failure to qualify as a REIT would place us in default under our revolving credit agreement.

We believe that Aimco operates, and has since its taxable year ended December 31, 1994, operated, in a manner that enables it to meet the requirements for qualification as a REIT for United States federal income tax purposes. However, qualification as a REIT involves the application of highly technical and complex Code provisions for which only limited judicial and administrative authorities exist. Moreover, even a technical or inadvertent mistake could jeopardize our REIT status. Aimco’s continued qualification as a REIT will depend on its satisfaction of certain asset, income, investment, organizational, distribution, stockholder ownership, and other requirements on a continuing basis. Aimco’s ability to satisfy the asset tests depends upon our analysis of the fair market values of our assets, some of which are not susceptible to a precise determination, and for which we do not obtain independent appraisals. Aimco’s compliance with the REIT annual income and quarterly asset requirements also depends upon our ability to manage successfully the composition of our income and assets on an ongoing basis. Moreover, the proper classification of an instrument as debt or equity for United States federal income tax purposes may be uncertain in some circumstances, which could affect the application of the REIT qualification requirements. Accordingly, there can be no assurance that the Internal Revenue Service, or the IRS, will not contend that our interests in subsidiaries or other issuers constitutes a violation of the REIT requirements. Moreover, future economic, market, legal, tax, or other considerations may cause Aimco to fail to qualify as a REIT, or Aimco’s Board of Directors may determine to revoke its REIT status.

REIT distribution requirements limit our available cash.

As a REIT, Aimco is subject to annual distribution requirements. The Aimco Operating Partnership pays distributions intended to enable Aimco to satisfy its distribution requirements. This limits the amount of cash available for other business purposes, including amounts to fund our growth. Aimco generally must distribute annually at least 90% of its REIT taxable income, determined without regard to the dividends paid deduction and excluding any net capital gain, in order for its distributed earnings not to be subject to United States federal corporate income tax. We intend to make distributions to Aimco’s stockholders to comply with the requirements of the Code. However, differences in timing between the recognition of taxable income and the actual receipt of cash could require us to sell apartment communities or borrow funds on a short-term or long-term basis to meet the 90% distribution requirement of the Code.

Aimco may be subject to federal and state income taxes, in certain circumstances.

Even if Aimco qualifies as a REIT, Aimco may be subject to United States federal income and excise taxes in various situations, such as on its undistributed income. Aimco could also be required to pay a 100% tax on any net income on non-arm’s length transactions between Aimco and a taxable REIT subsidiary and on any net income from sales of apartment communities that were held for sale primarily in the ordinary course. State and local tax laws may not conform to the United States federal income tax treatment, and Aimco may be subject to state or local taxation in various state or local jurisdictions in which Aimco transacts business. Any taxes imposed on Aimco would reduce our operating cash flow and net income and could negatively impact our ability to pay dividends and distributions.

Dividends payable by REITs do not qualify for the reduced tax rates available for some dividends.

REITs are entitled to a United States federal tax deduction for dividends paid to their stockholders. As compared to other taxable corporations, this ability to reduce or eliminate the REIT’s taxable income by paying dividends to stockholders is a principal benefit of maintaining REIT status, generally resulting in a lower combined tax liability of the REIT and its

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stockholders as compared to that of the combined tax liability of other taxable corporations and their stockholders. Notwithstanding this combined benefit, dividends payable by REITs may result in marginally higher taxes to the stockholder.

C-corporations are generally required to pay United States federal income tax on earnings. After tax earnings are then available for stockholder dividends. The maximum United States federal tax rate applicable to income from “qualified dividends” payable to United States stockholders that are individuals, trusts, and estates is currently 20%, plus the 3.8% investment tax surcharge. While dividends payable by REITs are generally not eligible for the qualified dividend reduced rates, stockholders that are individuals, trusts, or estates may deduct 20% of the aggregate amount of ordinary dividends from REITs. This deduction is available for taxable years beginning after December 31, 2017, and before January 1, 2026, and will generally cause the maximum tax rate for ordinary dividends from REITs to be 29.6%, plus the 3.8% investment tax surcharge. The more favorable tax rates applicable to regular corporate qualified dividends could cause investors who are individuals, trusts, and estates to perceive investments in REITs to be relatively less attractive than investments in the shares of non-REIT corporates that pay dividends, which could adversely affect the value of the shares of REITs, including Aimco Common Stock.

Complying with the REIT requirements may cause Aimco to forgo otherwise attractive business opportunities.

To qualify as a REIT for United States federal income tax purposes, Aimco must continually satisfy tests concerning, among other things, the sources of its income, the nature and diversification of its assets, the amounts distributed to Aimco stockholders, and the ownership of Aimco stock. As a result of these tests, Aimco may be required to make distributions to stockholders at disadvantageous times or when Aimco does not have funds readily available for distribution, forgo otherwise attractive investment opportunities, liquidate assets in adverse market conditions, or contribute assets to a TRS that is subject to regular corporate federal income tax.

Changes to United States federal income tax laws could materially and adversely affect Aimco and Aimco’s stockholders.

The present United States federal income tax treatment of REITs may be modified, possibly with retroactive effect, by legislative, judicial, or administrative action at any time, which could affect the United States federal income tax treatment of an investment in Aimco Common Stock. The United States federal income tax rules dealing with REITs constantly are under review by persons involved in the legislative process, the IRS, and the United States Treasury Department, which results in statutory changes as well as frequent revisions to regulations and interpretations. We cannot predict how changes in the tax laws might affect Aimco or Aimco’s stockholders. Revisions in federal tax laws and interpretations thereof could significantly and negatively affect Aimco’s ability to qualify as a REIT and the tax considerations relevant to an investment in Aimco Common Stock, or could cause Aimco to change its investments and commitments.

Government housing regulations may limit the opportunities at some of our apartment communities and failure to comply with resident qualification requirements may result in financial penalties and/or loss of benefits, such as rental revenues paid by government agencies. Additionally, the government may cease to operate or reduce funding for government housing programs which would result in a loss of benefits from those programs.

We own equity interests in entities that own certain apartment communities that benefit from governmental programs intended to provide housing to people with low or moderate incomes. These programs, which are usually administered by the United States Department of Housing and Urban Development, or HUD, or state housing finance agencies, typically provide one or more of the following: mortgage insurance; favorable financing terms; tax-exempt interest; historic or low-income housing tax credits; or rental assistance payments to the apartment community owners. As a condition of the receipt of assistance under these programs, the apartment communities must comply with various requirements, which typically limit rents to pre-approved amounts and limit our choice of residents to those with incomes at or below certain levels. Failure to comply with these requirements may result in financial penalties or loss of benefits. We are usually required to obtain the approval of HUD in order to acquire or dispose of a significant interest in or manage a HUD-assisted apartment community. We may not always receive such approval.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

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ITEM 2. PROPERTIES

Additional information about our consolidated real estate, including property debt, is contained in “Schedule III - Real Estate and Accumulated Depreciation” in this Annual Report on Form 10-K.

Our portfolio is diversified by both price point and geography and consists of market rate apartment communities in which we own a substantial interest. Our portfolio includes garden style, mid-rise, and high-rise apartment communities located in 17 states and the District of Columbia. Our portfolio strategy seeks predictable rent growth from a portfolio of apartment communities diversified among some of the largest markets in the United States, and that is diversified across “A,” “B,” and “C+” price points, averaging “B/B+” in quality. As of December 31, 2019, our portfolio consisted of roughly one-half “A” quality communities and one-half “B” and “C+” quality communities. Please refer to the Executive Overview section in Item 7 for a description of our portfolio quality ratings. The following table sets forth information on the apartment communities in our portfolio as of December 31, 2019:

Our consolidated apartment communities contained, on average, 272 apartment homes, with the largest community containing 2,113 apartment homes. These apartment communities offer residents a range of amenities, including resort pools with cabanas, grills, clubhouses, spas, fitness centers, package lockers, dog parks, and large open spaces. Many of the apartment homes offer features such as granite countertops, wood flooring, stainless steel appliances, fireplaces, spacious closets, washer and dryer connections, balconies, and patios.

The majority of our consolidated apartment communities are encumbered by property debt. As of December 31, 2019, apartment communities in our portfolio were encumbered by, in aggregate, $4.3 billion of property debt with a weighted-average interest rate of 3.89% and a weighted-average maturity of 7.5 years. The apartment communities collateralizing this non-recourse property debt have an estimated aggregate fair value of $10.9 billion. As of December 31, 2019, we held unencumbered apartment communities with an estimated fair value of approximately $2.4 billion.

On July 2, 2019, we acquired a 95% interest in 1001 Brickell Bay Drive, a 1.8-acre waterfront parcel in Miami, Florida, currently improved with an office building. 1001 Brickell Bay Drive is excluded from our apartment communities table above.

ITEM 3. LEGAL PROCEEDINGS

As further discussed in Note 6 to the consolidated financial statements in Item 8, we are engaged in discussions with regulatory agencies regarding environmental matters at two apartment communities we, or other entities, previously owned. Although the outcome of these matters is uncertain, we do not expect the resolution to have a material adverse effect on our consolidated financial condition, results of operations, or cash flows.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

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PART II

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

Aimco

Aimco’s Common Stock has been listed and traded on the NYSE under the symbol “AIV” since July 22, 1994.

On February 21, 2020, there were 148,930,402 shares of Common Stock outstanding, held by 815 stockholders of record. The number of holders does not include individuals or entities who beneficially own shares but whose shares are held of record by a broker or clearing agency, but does include each such broker or clearing agency as one record holder.

Unregistered Sales of Equity Securities

From time to time, Aimco may issue shares of Common Stock in exchange for OP Units, defined under The Aimco Operating Partnership heading below. Such shares are issued based on an exchange ratio of one share for each common OP Unit. Please refer to Note 8 to the consolidated financial statements in Item 8 for further discussion of such exchanges. Aimco may also issue shares of Common Stock in exchange for limited partnership interests in consolidated real estate partnerships. During the three months ended December 31, 2019, Aimco did not issue any shares of Common Stock in exchange for OP Units or limited partnership interests in consolidated real estate partnerships.

Repurchases of Equity Securities

There were no repurchases by Aimco of its common equity securities during the three months ended December 31, 2019. Aimco’s Board of Directors has, from time to time, authorized Aimco to repurchase shares of its outstanding Common Stock. As of December 31, 2019, Aimco was authorized to repurchase approximately 10.6 million shares. This authorization has no expiration date. These repurchases may be made from time to time in the open market or in privately negotiated transactions.

The Aimco Operating Partnership

Interests in the Aimco Operating Partnership that are held by limited partners other than Aimco are referred to as OP Units. OP Units include common partnership units, which we refer to as common OP Units, as well as partnership preferred units, or preferred OP Units. There is no public market for the Aimco Operating Partnership’s common partnership units, including common OP Units, and we have no intention of listing the common partnership units on any securities exchange. In addition, the Aimco Operating Partnership’s Partnership Agreement restricts the transferability of common partnership units, including common OP Units.

On February 21, 2020, there were 159,442,294 common partnership units and equivalents outstanding (148,930,402 of which were held by Aimco) that were held by 2,394 unitholders of record.

Unregistered Sales of Equity Securities

The Aimco Operating Partnership did not issue any unregistered OP units during the three months ended December 31, 2019.

Repurchases of Equity Securities

The Aimco Operating Partnership’s Partnership Agreement generally provides that after holding common OP Units for one year, limited partners other than Aimco have the right to redeem their common OP Units for cash or, at our election, shares of Aimco Common Stock on a one-for-one basis (subject to customary antidilution adjustments). No common OP Units or preferred OP Units held by Limited Partners were redeemed for shares of Aimco Common Stock during the three months ended December 31, 2019.

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The following table summarizes the Aimco Operating Partnership’s repurchases, or redemptions in exchange for cash, of common OP Units for the three months ended December 31, 2019:

Dividend and Distribution Payments

As a REIT, Aimco is required to distribute annually to holders of its Common Stock at least 90% of its “real estate investment trust taxable income,” which, as defined by the Code and United States Department of Treasury regulations, is generally equivalent to net taxable ordinary income. Aimco’s Board of Directors determines and declares its dividends. In making a dividend determination, Aimco’s Board of Directors considers a variety of factors, including: REIT distribution requirements; current market conditions; liquidity needs; and other uses of cash, such as for deleveraging and accretive investment activities. Aimco’s Board of Directors targets a dividend payout ratio between 65% and 70% of Adjusted Funds From Operations.

Stockholders receiving such dividend and any future dividend payable in cash and shares of Aimco Common Stock will be required to include the full amount of such dividends as ordinary income to the extent of Aimco’s current and accumulated earnings and profits, as determined for United States federal income tax purposes for the year of such dividends, and may be required to pay income taxes with respect to such dividends in excess of the cash dividends received. With respect to certain non-United States stockholders, Aimco may be required to withhold United States tax with respect to such dividends, including in respect of all or a portion of such dividend that is payable in Common Stock.

The Board of Directors of the Aimco Operating Partnership’s general partner determines and declares distributions on OP Units. Aimco, through wholly-owned subsidiaries, is the general and special limited partner of and, as of December 31, 2019, owned a 94.0% ownership interest in the common partnership units of the Aimco Operating Partnership. The Aimco Operating Partnership holds all of Aimco’s assets and manages the daily operations of Aimco’s business. The distributions paid by the Aimco Operating Partnership to Aimco are used by Aimco to fund the dividends paid to its stockholders. Accordingly, the per share dividends Aimco pays to its stockholders generally equal the per unit distributions paid by the Aimco Operating Partnership to holders of its common partnership units.

Our revolving credit agreement includes customary covenants, including a restriction on dividends and other restricted payments, but permits dividends and distributions during any four consecutive fiscal quarters in an aggregate amount of up to 95% of Aimco’s Funds From Operations for such period, subject to certain non-cash adjustments, or such amount as may be necessary to maintain Aimco’s REIT status.

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Performance Graph

The following graph compares cumulative total returns for Aimco’s Common Stock, the MSCI US REIT Index, the Nareit Equity Apartment Index, and the Standard & Poor’s 500 Total Return Index, or S&P 500 Index. The MSCI US REIT Index is published by Morgan Stanley Capital International Inc., a provider of equity indices. The Nareit Equity Apartment Index is published by The National Association of Real Estate Investment Trusts, or Nareit, a representative of real estate investment trusts and publicly traded real estate companies with interests in United States real estate and capital markets. The MSCI US REIT Index reflects total shareholder return for a broad range of REITs and the Nareit Equity Apartment Index provides a more direct multifamily peer comparison of total shareholder return. The indices are weighted for all companies that fit the definitional criteria of the particular index and are calculated to exclude companies as they are acquired and to add companies to the index calculation as they become publicly traded companies. All companies that fit the definitional criteria and existed at the point in time presented are included in the index calculations. The graph assumes the investment of $100 in Aimco’s Common Stock and in each index on December 31, 2014, and that all dividends paid have been reinvested. The historical information set forth below is not necessarily indicative of future performance.

The Performance Graph will not be deemed to be incorporated by reference into any filing by Aimco under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent that Aimco specifically incorporates the same by reference.

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ITEM 6. SELECTED FINANCIAL DATA

The following selected financial data is based on audited historical financial statements of Aimco and the Aimco Operating Partnership, unless otherwise noted. This information should be read in conjunction with such financial statements, including the notes thereto, and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included herein or in previous filings with the Securities and Exchange Commission.

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

Executive Overview

We are focused on the ownership, management, redevelopment, and some development of quality apartment communities located in several of the largest markets in the United States.

Our principal financial objective is to provide predictable and attractive returns to our equity holders. We measure our long-term total return using Economic Income, defined as NAV growth plus dividends. NAV is used by many investors because the value of company assets can be readily estimated, even for non-earning assets such as land or properties under development. NAV has the advantage of incorporating the investment decisions of thousands of real estate investors, enhancing comparability among companies that have differences in their accounting, avoiding disparity that can result from application of GAAP to investment properties and various ownership structures. Some investors focus on multiples of AFFO and Nareit FFO. Our disclosure of AFFO, a measure of current return, complements our focus on Economic Income. We also use Pro forma FFO as a secondary measure of operational performance. Over the last five years as of December 31, 2019, our Economic Income grew at a compounded annual return of 10%, comprised of a 6.9% compounded annual growth in NAV per share and $7.08 in cash dividends per share paid over the period. In 2019, AFFO per share grew $0.04, to $2.20 per share.

Year-over-year as of December 31, 2019, our NAV per share increased by about 3.9%, which, with our cash dividend, provided Economic Income of 6.8%.

Financial Highlights

Net income attributable to common stockholders per common share, on a dilutive basis, decreased by $1.19 during the year ended December 31, 2019 compared to 2018, primarily due to lower gains from dispositions.

We sold our Asset Management business in July 2018, accepting near-term earnings dilution as the price of an increased long-term growth rate. In 2019, we overcame these earnings headwinds and Pro forma FFO per share increased by $0.05, or 2.0%, for the year ended December 31, 2019 compared to 2018. For the three months ended December 31, 2019 compared to 2018, the first comparative period without the Asset Management business, our Pro forma FFO and AFFO per share increased 5% and 12%, respectively.

The year-over-year increase in Pro Forma FFO was due primarily to contribution from Same Store property net operating income growth of 4.3%, driven by a 3.8% increase in revenue, partially offset by a 2.4% increase in expenses. The increase in Same Store net operating income was offset partially by earnings dilution from the sale of the Asset Management business and lower tax benefit. AFFO per share also increased by $0.04, or 1.9%, for the year ended December 31, 2019 compared to 2018 due to the $0.05 increase in Pro forma FFO per share, partially offset by a $0.01 per share increase in capital replacement spending.

Our business is organized around five areas of strategic focus: operational excellence; redevelopment and development; portfolio management; balance sheet; and team and culture. The results from the execution of our business plan in 2019 are further described in the sections that follow.

Operational Excellence

We own and operate a portfolio of apartment communities, diversified by both geography and price point. As of December 31, 2019, our portfolio included 124 apartment communities with 32,839 apartment homes in which we held an average ownership of approximately 99%, and approximately 80% of the value of our portfolio, measured by gross asset value (the estimated fair value of our communities), was attributable to Same Store communities.

Our property operations team produced solid results for our portfolio for the year ended December 31, 2019. Same Store highlights include:

Our focus on efficient operations through productivity initiatives such as centralization of administrative tasks, optimization of economies of scale at the corporate level, increased automation, and investment in more durable, longer-lived materials has

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helped us control operating expenses. These and other innovations contributed to limiting growth in Same Store controllable operating expense, defined as property expenses less taxes, insurance, and utility expenses, compounding for the past 12 years at an annual rate of negative 0.2%. Our 2019 controllable operating expenses were flat compared to 2018.

Redevelopment and Development

Our second line of business is the redevelopment and some development of apartment communities. Through redevelopment activities, we expect to create value by repositioning communities within our portfolio. We undertake ground-up development when warranted by risk-adjusted investment returns, either directly or in connection with the redevelopment of an existing community. When warranted, we rely on the expertise and credit of a third-party developer familiar with the local market to limit our exposure to construction risk. Over the past five years, we have spent approximately $1.0 billion on redevelopment and development, targeting FCF internal rates of return of approximately 9% to 11% on these investments.

We invest to earn risk-adjusted returns in excess of those expected from the apartment communities sold in paired trades to fund the redevelopment or development. Of these two activities, we generally favor redevelopment because it permits adjustment to the scope and timing of spending to align with changing market conditions and customer preferences.

During the year ended December 31, 2019, we invested $229.8 million in redevelopment and development, an increase of approximately 30% compared to 2018. We continued redevelopment activities at Bay Parc and the ground-up construction at Parc Mosaic and The Fremont on the Anschutz Medical Campus. We also began the redevelopment of the North Tower at Flamingo Point and 707 Leahy, and ground-up construction at Eldridge Townhomes adjacent to our Elm Creek apartment community.

The following table summarizes our significant redevelopment and development communities (dollars in millions):

As of December 31, 2019, our total estimated net investment at redevelopment and development communities is $577.5 million, with a projected weighted-average net operating income yield on these investments of 5.3%, assuming untrended rents. As of December 31, 2019, $309.2 million of this total has been funded. The remaining estimated net investment of $268.3 million on these communities is expected to be funded in 2020 and future years, on a leverage-neutral basis, with proceeds from sales of apartment communities with lower forecasted FCF internal rates of return.

When possible, we prefer redevelopments that can be completed one apartment home at a time, when that home is vacated and available for renovation, or one floor at a time, thereby limiting the number of down homes and lease-up risk. We currently have six short-cycle projects, including Bay Parc, ongoing in our portfolio. During the year ended December 31, 2019, we completed 150 apartment homes, with another 21 homes under construction as of December 31, 2019.

During the year ended December 31, 2019, we leased 251 redeveloped or newly developed apartment homes. As of December 31, 2019, our exposure to lease-up at active redevelopment and developments was 866 apartment homes, or less than 3% of our homes.

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Please refer to the Redevelopment and Development subsection to the Liquidity and Capital Resources section for additional information regarding our redevelopment and development investment during the year ended December 31, 2019.

Portfolio Management

Our portfolio of apartment communities is diversified across “A,” “B,” and “C+” price points, averaging “B/B+” in quality, and is also diversified across several of the largest markets in the United States. We measure the quality of apartment communities in our portfolio based on average rents of our apartment homes compared to local market average rents as reported by a third-party provider of commercial real estate performance and analysis. Under this rating system, we classify as “A” quality apartment communities those earning rents greater than 125% of local market average; as “B” quality apartment communities those earning rents between 90% and 125% of local market average; as “C+” quality apartment communities those earning rents greater than $1,100 per month, but lower than 90% of local market average; and as “C” quality apartment communities those earning rents less than $1,100 per month and lower than 90% of local market average. We classify as “B/B+” quality a portfolio that on average earns rents between 100% and 125% of local market average rents. Although some companies and analysts within the multifamily real estate industry use apartment community quality ratings of “A,” “B,” and “C,” some of which are tied to local market rent averages, the metrics used to classify apartment community quality as well as the period for which local market rents are calculated may vary from company to company. Accordingly, our rating system for measuring apartment community quality is neither broadly nor consistently used in the multifamily real estate industry.

The following table summarizes information about our portfolio relative to the market for the three months ended December 31, 2019:

Our average revenue per apartment home was $2,272 for the three months ended December 31, 2019, representing an increase of 7% compared to the same period in 2018, and a 7.2% compounded annual growth rate over the past five years. This increase is due to growth in Same Store revenue as well as our acquisition activities, lease-up of redevelopment and acquisition communities, and the sale of communities with average monthly revenues per apartment home lower than those of the retained portfolio.

During the year ended December 31, 2019, we reallocated capital from slower-growth markets such as Chicago and reinvested the proceeds in higher-growth markets such as Miami, Denver, and Boston.

As part of our portfolio strategy, we seek to sell up to 10% of our portfolio annually and to reinvest the proceeds from such sales in accretive uses such as capital enhancements, redevelopments, some developments, and selective acquisitions with projected FCF internal rates of return higher than expected from the communities being sold. Through this disciplined approach to capital recycling, we increase the quality and expected growth rate of our portfolio.

As we execute our portfolio strategy, we expect to increase average revenue per Aimco apartment home at a rate greater than market rent growth, increase FCF margins, and maintain sufficient geographic and price point diversification to limit volatility and concentration risk.

Acquisitions

We follow a disciplined paired trade policy in making investments. We evaluate potential acquisitions seeking FCF internal rates of returns higher than those of the communities being sold. We prefer well-located real estate where land is a significant percentage of total value and provides potential upside from development or redevelopment.

During the year ended December 31, 2019, we acquired three properties: One Ardmore in Ardmore, Pennsylvania; Prism (50 Rogers), a community under construction in Cambridge, Massachusetts; and 1001 Brickell Bay Drive in Miami, Florida. Together, these acquisitions have an expected weighted-average FCF internal rate of return of 9%, approximately 300 basis points better than expected from the properties being sold, or to be sold, in paired trades to fund the acquisitions.

Mezzanine Investment

On November 26, 2019, we made a five-year, $275.0 million mezzanine loan at a 10% annual rate to the partnership owning Parkmerced Apartments. The loan is secured by a second-priority deed of trust. We simultaneously received a ten-year

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option to acquire a 30% interest in the partnership at an exercise price of $1.0 million, increased by 30% of future capital spending to progress development and redevelopment of Parkmerced Apartments.

Parkmerced Apartments is a 152-acre site in the southwest corner of San Francisco, currently improved with 3,221 apartment homes completed shortly before and after World War II. These apartment homes are subject to City of San Francisco rent control. The development of the site is governed by a development agreement that allows for 8,900 total residential units, with the new units exempt from City of San Francisco rent control. The partnership, which is the borrower and in which we have the option to acquire 30% ownership, owns 3,165 of the existing rent-controlled apartment homes, which excludes apartment homes transferred as part of an earlier phase of development to which we are not a party, as well as the vested right to develop 4,093 of the new market-rate homes.

The mezzanine loan provides us with current income with minimal expected downside risk. The option is expected to provide us with an opportunity to participate in substantial value creation from the vested development rights.

Dispositions

During the year ended December 31, 2019, we sold 12 apartment communities, generating net proceeds of $619.4 million used to fund acquisitions, redevelopment, development, the repurchase of Aimco shares in the fourth quarter of 2018, and other capital investments. We delayed approximately $300 million of planned fourth quarter 2019 and January 2020 sales. While this delay temporarily increased leverage, we expect a better execution as the transaction market remains deep, liquid, and attractively priced.

Balance Sheet

Leverage

Our leverage strategy seeks to increase financial returns by using leverage with appropriate caution. We limit risk through our balance sheet structure, employing low leverage, primarily non-recourse and long-dated property debt; build financial flexibility by maintaining ample unused and available credit as well as holding properties with substantial value unencumbered by property debt; and use partners’ capital when it enhances financial returns or reduces investment risk.

Our leverage includes our share of long-term, non-recourse property debt encumbering apartment communities, outstanding borrowings on the revolving credit facility, outstanding preferred equity and redeemable noncontrolling interests in a consolidated real estate partnership. Please refer to the Liquidity and Capital Resources section for additional information regarding our leverage.

Our target leverage ratios are Proportionate Debt and Preferred Equity to Adjusted EBITDAre below 7.0x and Adjusted EBITDAre to Adjusted Interest Expense and Preferred Dividends greater than 2.5x. Our leverage ratios for the three months ended December 31, 2019, are presented below:

We calculate Adjusted EBITDAre and Adjusted Interest Expense used in our leverage ratios based on the most recent three month amounts, annualized. The sales delay mentioned above increased Proportionate Debt to Adjusted EBITDAre and Proportionate Debt and Preferred Equity to Adjusted EBITDAre by 0.3x as of December 31, 2019. We expect a gradual decline in leverage to EBITDAre ratios throughout 2020, reaching approximately 6.4x and 6.5x, respectively, at year end. In future years, we expect earnings growth from completed redevelopments will increase EBITDAre and further reduce our leverage ratios.

Please refer to the Leverage Ratios subsection of the Non-GAAP Measures section for further information about the calculation of our leverage ratios.

Refinancing Activity

During the year ended December 31, 2019, we financed $772.6 million of new non-recourse, fixed-rate property debt. These loans have a weighted-average interest rate of 3.32%, a weighted-average term to maturity of 11.4 years, and contributed an approximately 29 basis point decrease in our annual cost of leverage compared to 2018.

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Liquidity

Our liquidity consists of cash balances and available capacity on our revolving credit facility. As of December 31, 2019, we had cash and restricted cash of $177.7 million and had the capacity to borrow up to $517.8 million on our revolving credit facility, after consideration of $7.2 million letters of credit backed by the facility. We use our credit facility primarily for working capital and other short-term purposes and to secure letters of credit.

We manage our financial flexibility by maintaining an investment grade rating and holding apartment communities that are unencumbered by property debt. As of December 31, 2019, we held unencumbered apartment communities with an estimated fair market value of approximately $2.4 billion.

Two credit rating agencies rate our creditworthiness, using different methodologies and ratios for assessing our credit, and both have rated our credit and outlook as BBB- (stable), an investment grade rating. Although some of the ratios they use are similar to those we use to measure our leverage, there are differences in our methods of calculation and therefore our leverage ratios disclosed above are not indicative of the ratios that may be calculated by these agencies.

Equity Capital Activities

On February 3, 2019, Aimco’s Board of Directors declared a special dividend on the common stock that consisted of $67.1 million in cash and 4.5 million shares of Common Stock. The special dividend also included the regular quarterly cash dividend of $0.39 per share. Simultaneously, Aimco’s Board of Directors authorized a reverse stock split, effective on February 20, 2019, in which every 1.03119 Aimco common share was combined into one Aimco common share, which was effective at the close of business on February 20, 2019. Taken together, the total number of shares outstanding after the stock dividend and reverse split was unchanged from the number of shares outstanding immediately prior to the two actions. Please refer to Notes 7 and 8 to the consolidated financial statements in Item 8 for further information regarding these transactions and the corresponding impact to the Aimco Operating Partnership’s common unitholders.

On January 28, 2020, our Board of Directors declared a quarterly cash dividend of $0.41 per share of Common Stock, representing an increase of 5% compared to the regular quarterly dividends paid in 2019. This amount is payable on February 28, 2020, to stockholders of record on February 14, 2020.

Team and Culture

Our team and culture are keys to our success. Our intentional focus on a collaborative and productive culture based on respect for others and personal responsibility is reinforced by a preference for promotion from within. We focus on succession planning and talent development to produce a strong, stable team that is the enduring foundation of our success. We offer benefits reinforcing our value of caring for each other, including paid time for parental leave, paid time annually to volunteer in local communities, college scholarships for the children of team members, an emergency fund to help team members in crisis, financial support for our team members who are becoming United States citizens, and a bonus structure at all levels of the organization. We also pay full compensation and benefits for team members who are actively deployed by the United States military. Out of hundreds of participating companies in 2019, Aimco was one of only seven recognized as a “Top Workplace” in Colorado for each of the past seven years. Aimco was also recognized as a Top Workplace in the Bay Area in 2019. Also in 2019, Aimco was the only real estate company to receive a BEST award from the Association for Talent Development in recognition of our company-wide success in talent development, marking our second consecutive year receiving this award.

Results of Operations

Because our operating results depend primarily on income from our apartment communities, the supply of and demand for apartments influences our operating results. Additionally, the level of expenses required to operate and maintain our apartment communities and the pace and price at which we redevelop, acquire, and dispose of our apartment communities affect our operating results.

The following discussion and analysis of the results of our operations and financial condition should be read in conjunction with the accompanying consolidated financial statements in Item 8. 

Year Ended December 31, 2019, Compared to December 31, 2018

Net income attributable to Aimco and net income attributable to the Aimco Operating Partnership decreased by $192.1 million and $200.5 million, respectively, for the year ended December 31, 2019 compared to 2018, as described more fully below.

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Property Operations

We have four segments: Same Store, Redevelopment and Development, Acquisition, and Other Real Estate. Our Same Store segment includes communities that have reached a stabilized level of operations as of the beginning of a two-year comparable period and maintained it throughout the current and comparable prior year, and are not expected to be sold within 12 months. Our Redevelopment and Development segment includes communities that are currently under construction that have not achieved a stabilized level of operations, and those that have been completed in recent years that have not achieved and maintained stabilized operations for both the current and comparable prior year. Our Acquisition segment includes those communities that we have acquired since the beginning of a two-year comparable period. Our Other Real Estate segment primarily includes apartment communities that are subject to limitations on rent increases, apartment communities that we expect to sell within 12 months but do not yet meet the criteria to be classified as held for sale, certain retail spaces, and 1001 Brickell Bay Drive.

As of December 31, 2019, our Same Store segment included 91 apartment communities with 26,649 apartment homes.

From December 31, 2018 to December 31, 2019, on a net basis, our Same Store segment decreased by two apartment communities and increased by 744 apartment homes. These changes consisted of:

As of December 31, 2019: our Redevelopment and Development segment included seven apartment communities with 3,143 apartment homes; our Acquisition segment included seven apartment communities with 1,590 apartment homes; and our Other Real Estate segment included 15 apartment communities with 1,315 apartment homes and one office building.

We use proportionate property net operating income to assess the operating performance of our communities. Proportionate property net operating income reflects our share of rental and other property revenues, excluding resident utility reimbursement, less direct property operating expenses, net of resident utility reimbursement, for consolidated communities. Accordingly, the results of operations of our segments discussed below are presented on a proportionate basis and exclude the results of four apartment communities with 142 apartment homes that we do not consolidate.

We do not include offsite costs associated with property management, casualty losses, or the results of apartment communities sold or held for sale, reported in consolidated amounts, in our assessment of segment performance. Accordingly, these items are not allocated to our segment results discussed below.

Please refer to Note 13 to the consolidated financial statements in Item 8 for further discussion regarding our segments, including a reconciliation of these proportionate amounts to consolidated rental and other property revenues attributable to real estate and property operating expenses attributable to real estate.

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Proportionate Property Net Operating Income

The results of our segments for the years ended December 31, 2019 and 2018, as presented below, are based on the apartment community classifications as of December 31, 2019.

For the year ended December 31, 2019, compared to 2018, our Same Store proportionate property net operating income increased by $21.2 million, or 4.3%. This increase was attributable primarily to a $25.5 million, or 3.8%, increase in rental and other property revenues due to higher average revenues of $69 per apartment home comprised of increases in rental rates and a 60 basis point increase in average daily occupancy. Renewal rents increased by 4.9% and new lease rents increased by 1.9%, resulting in a weighted-average increase of 3.4%. The increase in Same Store rental and other property revenues was offset partially by a $4.3 million, or 2.4%, increase in property operating expenses due primarily to higher real estate taxes. Controllable operating expenses, which exclude utility costs, real estate taxes, and insurance, were flat for the year ended December 31, 2019, compared to 2018.

Redevelopment and Development proportionate property net operating income decreased by $1.2 million, or 2.6%, for the year ended December 31, 2019, compared to 2018. This decrease was attributable primarily to de-leasing at Flamingo Point and 707 Leahy in preparation for redevelopment, offset partially by increased occupancy driven by the lease-up of Park Towne Place.

Acquisition proportionate property net operating income increased by $10.1 million, or 49.9%, for the year ended December 31, 2019, compared to 2018. This increase was attributable primarily to the 2019 acquisition of One Ardmore and a full period of operating activity at the four Philadelphia communities acquired in 2018, compared to eight months of operations during the year ended December 31, 2018.

Other Real Estate proportionate property net operating income increased by $4.7 million, or 20.5%, for the year ended December 31, 2019, compared to 2018 due primarily to the acquisition of 1001 Brickell Bay Drive in 2019.  

Year Ended December 31, 2018, Compared to December 31, 2017

Net income attributable to Aimco and net income attributable to the Aimco Operating Partnership increased by $350.5 million and $370.4 million, respectively, for the year ended December 31, 2018, as compared to 2017, as described more fully below.

Proportionate Property Net Operating Income

As of December 31, 2018, excluding apartment communities sold during 2019: our Same Store segment consisted of 83 Same Store apartment communities with 23,091 apartment homes; our Redevelopment and Development segment included 13 apartment communities with 6,294 apartment homes; our Acquisition segment included seven apartment communities with 1,943 apartment homes; and our Other Real Estate segment included 15 apartment communities with 1,483 apartment homes.

The results of our segments for the years ended December 31, 2018 and 2017, as presented below, are based on the apartment community classifications as of December 31, 2018, and exclude amounts related to apartment communities sold

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during 2019. Based on the nature of our apartment community classifications, there is no comparison of the years ended December 31, 2018 and 2017. The results of operations for these communities are reflected in the table below.

For the year ended December 31, 2018, compared to 2017, Same Store proportionate property net operating income increased by $12.3 million, or 3.2%. This increase was attributable primarily to a $17.0 million, or 3.3%, increase in rental and other property revenues due to higher average revenues of $53 per apartment home comprised of increases in rental rates and a 60 basis point increase in average daily occupancy. Renewal rents increased by 4.9% and new lease rents increased by 1.9%, resulting in a weighted-average increase of 3.4%. The increase in Same Store and other property revenues was offset partially by a $4.7 million, or 3.5%, increase in property operating expenses due primarily to increases in real estate taxes and repairs and maintenance costs. During the year ended December 31, 2018, compared to 2017, controllable operating expenses increased by $1.0 million, or 1.5%.

Redevelopment and Development proportionate property net operating income increased by $18.8 million, or 18.2%, for the year ended December 31, 2018, compared to 2017 due to leasing activities at communities, offset partially by decreases due to apartment homes taken out of service for redevelopment.

Acquisition proportionate property net operating income increased by $24.0 million, or 230.1%, for the year ended December 31, 2018, compared to 2017 due to the 2018 acquisitions of Bent Tree Apartments, Avery Row, and four apartment communities in Philadelphia.

Non-Segment Real Estate Operations

Operating income amounts not attributed to our segments include offsite costs associated with property management, casualty losses, and the results of apartment communities sold or held for sale, reported in consolidated amounts, which we do not allocate to our segments for purposes of evaluating segment performance.

For the years ended December 31, 2019, 2018, and 2017, casualty losses totaled $9.0 million, $4.0 million, and $8.2 million, respectively. Casualty losses during the year ended December 31, 2019, included one major claim due to storm-related flooding at our One Canal apartment community and several other claims due to fire damage. Casualty losses for the year ended December 31, 2018, included several claims due primarily to storm and fire damage, offset partially by recovery from insurance carriers for insured losses in excess of policy limits. Casualty losses were elevated during the year ended December 31, 2017, due primarily to hurricane damage.

For the years ended December 31, 2019, 2018, and 2017, apartment communities that were sold or classified as held for sale generated net operating income of $16.6 million, $54.6 million, and $91.1 million, respectively.

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Asset Management Results

For the year ended December 31, 2019, there was no net operating income attributable to the Asset Management business, which we sold in July 2018.

For the years ended December 31, 2018 and 2017, net operating income attributable to the Asset Management business was $28.9 million and $51.8 million, respectively.

Depreciation and Amortization

For the year ended December 31, 2019, compared to 2018 and the year ended December 31, 2018, compared to 2017, depreciation and amortization expense increased by $2.4 million and $11.6 million, respectively, due primarily to apartment communities acquired in 2019 and 2018 and renovated apartment homes placed in service after their completion. This increase was offset partially by decreases in depreciation associated with apartment communities sold and with communities owned by partnerships served by our Asset Management business, which we sold in 2018.

General and Administrative Expenses

General and administrative expenses for the year ended December 31, 2019, were relatively flat compared to the year ended December 31, 2018.

For the year ended December 31, 2018, compared to 2017, general and administrative expenses increased $2.6 million, due primarily to higher variable incentive compensation cost.

Other Expenses, Net

Other expenses, net, includes costs associated with our risk management activities, partnership administration expenses, and certain non-recurring items.

For the year ended December 31, 2019, compared to 2018, other expenses, net, increased by $15.3 million, related primarily to the resolution of our litigation against Airbnb in 2018 and an increase in rent expense associated with our ground leases.

For the year ended December 31, 2018, compared to 2017, other expenses, net, decreased by $7.4 million, due primarily to the resolution of our litigation against Airbnb and settlement of litigation related to the challenge to the title of the La Jolla Cove property, which we acquired in 2014.

Provision for Real Estate Impairment Loss

We recognized no provisions for impairment losses during the years ended December 31, 2019 or 2018.

In January 2018, we agreed to sell our interests in the entities owning the La Jolla Cove property in settlement of legal actions filed in 2014 by a group of disappointed buyers who had hoped to acquire the property. As a result of the settlement, we recognized in our 2017 results a gross impairment loss of $35.8 million, $25.6 million of which related to the establishment of a deferred tax liability assumed in connection with our acquisition of the business entities. The tax liability was assumed by the buyer, resulting in no economic loss to us. The remaining $10.2 million loss was offset by cash distributions paid to us during our ownership and avoided legal costs for continued litigation. On an economic basis, we agreed to sell these entities at roughly our purchase price, adjusted for retained cash distributions and avoided legal costs.

Interest Income

Interest income for the year ended December 31, 2019, was relatively flat compared to the year ended December 31, 2018.

For the year ended December 31, 2018, compared to 2017, interest income increased $2.6 million, due primarily to interest earned on the seller financing notes received as consideration in the sale of the La Jolla Cove property.

Interest Expense

For the year ended December 31, 2019, compared to 2018, interest expense, which includes the amortization of debt issuance costs, decreased by $31.8 million due primarily to lower interest on property-level debt following refinancing and debt payoff activity, including the 2018 repayment of our term loan, a decrease in property-level debt attributable to sold communities and an increase in capitalized interest attributable to redevelopment and development communities. This decrease was offset partially by interest on property-level debt assumed in connection with our acquisitions and a $9.9 million decrease in prepayment penalties.

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For the year ended December 31, 2018, compared to 2017, interest expense increased by $6.0 million. The increase was due primarily to debt prepayment penalties of $14.9 million incurred in connection with 2018 refinancing of property-level debt that was scheduled to mature in 2019, 2020, and 2021, offset partially by a decrease in mortgage interest expense for communities sold and the sale of the Asset Management business in July 2018, and lower corporate-level interest.

Gain on Dispositions of Real Estate and the Asset Management Business

The table below summarizes dispositions of apartment communities from our portfolio during the years ended December 31, 2019, 2018, and 2017 (dollars in millions):

The apartment communities sold from our portfolio during 2019, 2018, and 2017 were primarily located outside of our primary markets or in lower-rated locations within our primary markets and had average revenues per apartment home significantly below those of our retained portfolio.

Income from Unconsolidated Real Estate Partnerships

Income from unconsolidated real estate partnerships for the year ended December 31, 2019, was relatively flat compared to the year ended December 31, 2018.

For the year ended December 31, 2018, compared to 2017, income from unconsolidated real estate partnerships decreased by $7.6 million, due primarily to the derecognition of the final NAPICO property in 2017, which resulted in a gain.

Income Tax Benefit

Certain of our operations, including property management and risk management, are conducted through taxable REIT subsidiaries, or TRS entities. Additionally, some of our apartment communities and 1001 Brickell Bay Drive are owned through TRS entities.

Our income tax benefit calculated in accordance with GAAP includes: (a) income taxes associated with the income or loss of our TRS entities including tax on gains on dispositions, for which the tax consequences have been realized or will be realized in future periods; (b) low income housing tax credits generated prior to the sale of our Asset Management business that offset REIT taxable income, primarily from retained capital gains; and (c) historic tax credits that offset income tax obligations of our TRS entities. Income taxes related to these items, as well as changes in valuation allowance and the establishment of incremental deferred tax items in conjunction with intercompany asset transfers (if applicable), are included in income tax benefit in our consolidated statements of operations.

For the year ended December 31, 2019, compared to 2018, income tax benefit decreased $9.9 million. The decrease is due primarily to lower tax benefit recognized in connection with the intercompany transfer of assets and release of a valuation allowance in 2018 related to sale of our Asset Management business, as well as lower tax benefit from historic tax credits. This decrease is offset partially by a lower tax provision on gains on dispositions.

For the year ended December 31, 2018, compared to 2017, income tax benefit decreased by $17.8 million. The decrease is due primarily to the reversal of a $19.3 million net tax benefit we recognized as a result of the December 2017 tax reform legislation in 2017 and higher tax expense related to gains on sale of real estate for communities held through TRS entities.

Non-GAAP Measures

Various key financial indicators we use in managing our business and in evaluating our financial condition and operating performance are non-GAAP measures. Key non-GAAP measures we use are defined and described below, and for those non-GAAP measures used or disclosed within this annual report, we provide reconciliations of the non-GAAP measures to the most comparable financial measure computed in accordance with GAAP.

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Free Cash Flow, as calculated for our retained portfolio, represents an apartment community’s property net operating income, less spending for Capital Replacements, which represents our estimation of the capital additions made to replace capital assets consumed during our ownership period (further discussed under the Nareit Funds From Operations, Pro forma Funds From Operations, and Adjusted Funds From Operations heading). FCF margin as calculated for apartment communities sold represents the sold apartment community’s net operating income less $1,200 per apartment home of assumed annual capital replacement spending, as a percentage of the apartment community’s rental and other property revenues. Capital replacement spending represents a measure of capital asset usage during the period; therefore, we believe that FCF is useful to investors as a supplemental measure of apartment community performance because it takes into consideration costs incurred during the period to replace capital assets that have been consumed during our ownership.

Economic Income

Economic Income represents stockholder value creation as measured by the change in estimated NAV per share plus cash dividends per share. We believe Economic Income is important to investors as it represents a measure of the total return we have earned for our stockholders. NAV, as used in our calculation of Economic Income, is a non-GAAP measure and represents the estimated fair value of assets net of liabilities attributable to Aimco’s common stockholders and the Aimco Operating Partnership’s common unitholders on a diluted basis. We believe NAV is considered useful by some investors in real estate companies because the value of company assets can be readily estimated, even for non-earning assets such as land or properties under development. NAV has the advantage of incorporating the investment decisions of thousands of real estate investors. We believe it enhances comparability among companies that have differences in their accounting. Although, NAV is not identical to liquidation value in that some costs and benefits are disregarded, it is often considered a floor with upside for value ascribed to the operating platform. NAV also provides an objective basis for the perceived quality and predictability of future cash flows as well as their expected growth as these are factors considered by real estate investors.

Our estimated NAV per share and the quoted share price of Aimco Common Stock are not necessarily equal. Although we use Economic Income and NAV for comparability in assessing our value creation compared to other REITs, not all REITs publish these measures and those who do may not compute them in the same manner. Accordingly, there can be no assurance that our basis for computing these measures is comparable with that of other REITs.

We report NAV on a semiannual basis, as of the end of the first and third quarters. Economic Income for 2019 was calculated using the change in NAV per share between September 30, 2018 and 2019. NAV will fluctuate over time. This NAV information should not be relied upon as representative of the amount a stockholder could expect to receive in a liquidation event, now or in the future. Certain assets are excluded as are certain liabilities, such as taxes and transaction costs associated with a liquidation. In addition, NAV is based on management’s subjective judgments, assumptions and opinions as of the date of determination. We assume no obligation to revise or update NAV to reflect subsequent or future events or circumstances. Our NAV estimate is subject to a variety of risks and uncertainties, many of which are beyond our control, including, without limitation, those described in Item 1A. Risk Factors.

Economic Income does not represent the change in stockholder’s equity in accordance with GAAP. Additionally, NAV does not represent stockholder’s equity in accordance with GAAP and should not be considered an alternative to Aimco’s total equity, which we believe is the most directly comparable GAAP measure. A reconciliation of NAV to Aimco’s total equity, as of September 30, 2019, is provided below (in millions, except per share data):

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For valuation purposes at September 30, 2019, we segregated these 132 properties into the following categories: stabilized portfolio and non-stabilized portfolio.

Nareit Funds From Operations, Pro forma Funds From Operations, and Adjusted Funds From Operations

Nareit FFO is a non-GAAP financial measure that we believe, when considered with the financial statements determined in accordance with GAAP, is helpful to investors in understanding our performance because it captures features particular to real estate performance by recognizing that real estate generally appreciates over time or maintains residual value to a much greater extent than do other depreciable assets such as machinery, computers, or other personal property. Nareit defines FFO as net income computed in accordance with GAAP, excluding: depreciation and amortization related to real estate; gains and losses from sales and impairment of depreciable assets and land used in our primary business; and income taxes directly associated with a gain or loss on the sale of real estate, and including our share of the FFO of unconsolidated partnerships and joint ventures. Adjustments for unconsolidated partnerships and joint ventures are calculated on the same basis to determine Nareit

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FFO. We calculate Nareit FFO attributable to Aimco common stockholders (diluted) by subtracting dividends on preferred stock and amounts allocated from Nareit FFO to participating securities.

In addition to Nareit FFO, we compute Pro forma FFO and AFFO, which are also non-GAAP financial measures that we believe are helpful to investors in understanding our short-term performance. Pro forma FFO represents Nareit FFO attributable to Aimco common stockholders (diluted), excluding certain amounts that are unique or occur infrequently.

In computing 2019 Pro forma FFO, we made the following adjustments to Nareit FFO:

In computing 2018 Pro forma FFO, we made the following adjustments to Nareit FFO:

AFFO represents Pro forma FFO reduced by Capital Replacements, which represent our estimation of the actual capital additions made to replace capital assets consumed during our ownership period. When we make capital additions at an apartment community, we evaluate whether the additions extend the useful life of an asset as compared to its condition at the time we purchased the apartment community. We classify as Capital Improvements those capital additions that meet this criterion, and we classify as Capital Replacements those that do not. AFFO is a key financial indicator we use to evaluate our short-term operational performance and is one of the factors that we use to determine the amounts of our dividend payments.

Nareit FFO, Pro forma FFO, and AFFO should not be considered alternatives to net income determined in accordance with GAAP, as indications of our performance. Although we use these non-GAAP measures for comparability in assessing our

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performance compared to other REITs, not all REITs compute these same measures and those who do may not compute them in the same manner. Additionally, computation of AFFO is subject to our definition of Capital Replacement spending. Accordingly, there can be no assurance that our basis for computing these non-GAAP measures is comparable with that of other REITs.

For the years ended December 31, 2019 and 2018, Aimco’s Nareit FFO, Pro forma FFO, and AFFO are calculated as follows (in thousands, except per share data):

Please refer to the Results of Operations section for discussion of our Pro forma FFO and AFFO results for 2019, as compared to 2018.

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The Aimco Operating Partnership does not separately compute or report Nareit FFO, Pro forma FFO, or AFFO. However, based on Aimco’s method for allocation of such amounts to noncontrolling interests in the Aimco Operating Partnership, as well as limited differences between the amounts of net income attributable to Aimco’s common stockholders and the Aimco Operating Partnership’s unit holders during the periods presented, Nareit FFO, Pro forma FFO, and AFFO amounts on a per unit basis for the Aimco Operating Partnership would be expected to be substantially the same as the corresponding per share amounts for Aimco.

Leverage Ratios

As discussed under the Balance Sheet heading, our leverage strategy targets the ratio of Proportionate Debt and Preferred Equity to Adjusted EBITDAre to be below 7.0x and the ratio of Adjusted EBITDAre to Adjusted Interest Expense and Preferred Dividends to be greater than 2.5x. We believe these ratios, which are based in part on non-GAAP financial information, are commonly used by investors and analysts to assess the relative financial risk associated with companies within the same industry, and they are believed to be similar to measures used by rating agencies to assess entity credit quality.

Proportionate Debt, as used in our leverage ratios, is a non-GAAP measure and includes our share of the long-term, non-recourse property debt and outstanding borrowings under our revolving credit facility. Proportionate Debt excludes unamortized debt issuance costs because these amounts represent cash expended in earlier periods and do not reduce our contractual obligations. We reduce our recorded debt by the amounts of cash and restricted cash on-hand, which are primarily restricted under the terms of our property debt agreements, assuming these amounts would be used to reduce our outstanding leverage. We further reduce our recorded debt by the value of our investment in a securitization trust that holds certain of our property debt, as our payments of principal and interest associated with such property debt will ultimately repay our investments in the trust.

We believe Proportionate Debt is useful to investors as it is a measure of our net exposure to debt obligations. Proportionate Debt, as used in our leverage ratios, is calculated as set forth in the table below.

Preferred Equity, as used in our leverage ratios, represents the redemption amounts for the Aimco Operating Partnership’s preferred OP Units. Preferred Equity, although perpetual in nature, is another component of our overall leverage.

The reconciliation of total indebtedness to Proportionate Debt and Preferred Equity, as used in our leverage ratios as of December 31, 2019, is as follows (in thousands):

We calculated Adjusted EBITDAre used in our leverage ratios based on the most recent three month amounts, annualized. EBITDAre and Adjusted EBITDAre are non-GAAP measures, which we believe are useful to investors, creditors, and rating agencies as a supplemental measure of our ability to incur and service debt because they are recognized measures of performance by the real estate industry and allow for comparison of our credit strength to different companies. EBITDAre and Adjusted EBITDAre should not be considered alternatives to net income (loss) as determined in accordance with GAAP as indicators of liquidity. There can be no assurance that our method of calculating EBITDAre and Adjusted EBITDAre is comparable with that of other real estate investment trusts. Nareit defines EBITDAre as net income computed in accordance with GAAP, before interest expense, income taxes, depreciation, and amortization expense, further adjusted for:

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We define Adjusted EBITDAre as EBITDAre adjusted to exclude the effect of the following items for the reasons set forth below:

EBITDAre is defined by Nareit and provides for an additional performance measure independent of capital structure for greater comparability between real estate investment trusts. The reconciliation of net income to EBITDAre and Adjusted EBITDAre for the three months ended December 31, 2019, as used in our leverage ratios, is as follows (in thousands):

We calculate Adjusted Interest Expense, as used in our leverage ratios, based on the most recent three months, annualized. Adjusted Interest Expense is a non-GAAP measure that we believe is meaningful for investors and analysts as it presents our share of current recurring interest requirements associated with leverage. Adjusted Interest Expense represents our proportionate share of interest expense on non-recourse property debt and interest expense on our revolving credit facility borrowings. We exclude from our calculation of Adjusted Interest Expense:

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Preferred Dividends represents the distributions paid on the Aimco Operating Partnership’s preferred OP Units. We add Preferred Dividends to Adjusted Interest Expense for a more complete picture of the interest and dividend requirements of our leverage.

The reconciliation of interest expense to Adjusted Interest Expense and Preferred Dividends for the three months ended December 31, 2019, as used in our leverage ratios, is as follows (in thousands):

Liquidity and Capital Resources

Liquidity

Liquidity is the ability to meet present and future financial obligations. Our primary source of liquidity is cash flow from operations. Additional sources are proceeds from dispositions of apartment communities, proceeds from refinancing existing property debt, borrowings under new property debt, borrowings under our revolving credit facility, and proceeds from equity offerings.

As of December 31, 2019, our primary sources of liquidity were as follows:

Our principal uses for liquidity include normal operating activities, payments of principal and interest on outstanding property debt, capital expenditures, dividends paid to stockholders, distributions paid to noncontrolling interest partners, and acquisitions of apartment communities. We use our cash and cash equivalents and our cash provided by operating activities to meet short-term liquidity needs. In the event that our cash and cash equivalents and cash provided by operating activities are not sufficient to cover our short-term liquidity needs, we have additional means, such as short-term borrowing availability and proceeds from apartment community sales and refinancings. We may use our revolving credit facility for working capital and other short-term purposes, such as funding investments on an interim basis. We expect to meet our long-term liquidity requirements, such as debt maturities, redevelopment spending, and apartment community acquisitions, through primarily non-recourse, long-term borrowings, the issuance of equity securities (including OP Units), the sale of apartment communities, and cash generated from operations.

As of December 31, 2019, we also held unencumbered apartment communities with an estimated fair market value of approximately $2.4 billion.

Leverage and Capital Resources

The availability of credit and its related effect on the overall economy may affect our liquidity and future financing activities, both through changes in interest rates and access to financing. Currently, interest rates are low compared to historical levels and many lenders are active in the market. However, any adverse changes in the lending environment could negatively affect our liquidity. We believe we have mitigated much of this exposure by reducing our short and intermediate term maturity risk through refinancing such loans with long-dated, fixed-rate property debt. However, if property financing options become unavailable for our future debt needs, we may consider alternative sources of liquidity, such as reductions in capital spending or proceeds from apartment community dispositions.

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Two credit rating agencies rate our creditworthiness and both have rated our credit and outlook as BBB- (stable), an investment grade rating. Our investment grade rating would be useful in accessing capital through the sale of bonds in private or public transactions. However, our intention and historical practice has been to raise debt capital in the form of property-level, non-recourse, long-dated, fixed-rate, amortizing debt, the cost of which is generally less than that of recourse debt and the terms of which also provide for greater balance sheet safety.

As of December 31, 2019, approximately 91.8% of our leverage consisted of property-level, non-recourse, long-dated, amortizing debt. Approximately 96.0% of our property-level debt is fixed-rate, which provides a hedge against increases in interest rates, capitalization rates, and inflation. The weighted-average remaining term to maturity of our property-level debt was 7.5 years. On average, 7.4% of our unpaid principal balances will mature each year from 2020 through 2022.

During 2019, we financed $772.6 million of new non-recourse, fixed-rate property debt. These loans have a weighted-average interest rate of 3.32%, a weighted-average remaining term to maturity of 11.4 years, and contributed to an approximately 29 basis point decrease in our annual cost of leverage compared to 2018.

While our primary source of leverage is property-level, non-recourse, long-dated, fixed-rate, amortizing debt, we also have a revolving credit facility with a syndicate of financial institutions. As of December 31, 2019, we had $275.0 million of outstanding borrowings under our revolving credit facility, which represented 6.0% of our total leverage.

As of December 31, 2019, our outstanding preferred OP units represented approximately 2.1% of our total leverage. Preferred OP units are redeemable at the holder’s option; however, for illustrative purposes, we compute the weighted-average maturity of our total leverage assuming a 10-year maturity on the units.

The combination of non-recourse property-level debt, borrowings under our revolving credit facility, preferred OP units, and redeemable noncontrolling interests in a consolidated real estate partnership comprise our total leverage. The weighted-average remaining term to maturity for our total leverage described above was 7.3 years as of December 31, 2019.

Under the revolving credit facility, we have agreed to maintain a Fixed Charge Coverage ratio of 1.40x, as well as other covenants customary for similar revolving credit arrangements. For the year ended December 31, 2019, our Fixed Charge Coverage ratio was 2.06x, compared to ratio of 2.05x for the year ended December 31, 2018. We expect to remain in compliance with this covenant during the next 12 months.

We like the discipline of financing our investments in real estate through the use of fixed-rate, amortizing, non-recourse property debt, as the amortization gradually reduces our leverage and reduces our refunding risk, and the fixed-rate provides a hedge against increases in interest rates, and the non-recourse feature avoids entity risk.

Changes in Cash, Cash Equivalents and Restricted Cash

The following discussion relates to changes in consolidated cash, cash equivalents, and restricted cash due to operating, investing, and financing activities, which are presented in our consolidated statements of cash flows in Item 8 of this report.

Operating Activities

For the year ended December 31, 2019, our net cash provided by operating activities was $374.5 million. Our operating cash flow is affected primarily by rental rates, occupancy levels, and operating expenses related to our portfolio of apartment communities. Cash provided by operating activities for the year ended December 31, 2019, decreased by $21.9 million compared to 2018, due to lower net operating income associated with communities sold and the Asset Management business sold in 2018, offset partially by improved operating results of our Same Store communities and increased contribution from our Acquisition and Other Real Estate communities.

Investing Activities

For the year ended December 31, 2019, net cash used in investing activities of $205.4 million consisted primarily of the cash payment for the mezzanine loan and related transaction costs, the acquisitions of 1001 Brickell Bay Drive, One Ardmore, and Prism, and capital expenditures, offset partially by proceeds from the disposition of 12 apartment communities.

Capital additions for our segments totaled $396.0 million, $329.3 million, and $310.5 million during the years ended December 31, 2019, 2018, and 2017, respectively. We generally fund capital additions with cash provided by operating activities and cash proceeds from sales of apartment communities.

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We categorize capital spending for communities in our portfolio broadly into seven primary categories:

We exclude the amounts of capital spending related to commercial spaces and to apartment communities sold or classified as held for sale at the end of the period from the foregoing measures. We have also excluded from these measures indirect capitalized costs, which are not yet allocated to communities with capital additions, and their related capital spending categories.

A summary of the capital spending for these categories, along with a reconciliation of the total for these categories to the capital expenditures reported in the accompanying consolidated statements of cash flows for the years ended December 31, 2019, 2018, and 2017, are presented below (dollars in thousands):

For the years ended December 31, 2019, 2018, and 2017, we capitalized $11.8 million, $7.6 million, and $7.6 million of interest costs, respectively, and $37.8 million, $36.8 million, and $36.0 million of other direct and indirect costs, respectively.

Redevelopment and Development

As of December 31, 2019, our total estimated net investment in approved and active redevelopment and development is $577.5 million, with a projected weighted-average net operating income yield on these investments of 5.3%, assuming untrended rents. Of this total, we have funded $309.2 million as of December 31, 2019. We expect to fund the remaining estimated net investment of $268.3 million on these communities in 2020 and future years, on a leverage-neutral basis, with proceeds from sales of apartment communities with lower forecasted FCF internal rates of return.

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We execute redevelopments using a range of approaches. We prefer to limit risk by executing redevelopments using a short-cycle approach, in which we renovate an apartment community in stages. Shorter cycles provide us the flexibility to maintain current earnings while aligning the timing of the completed apartment homes with market demand. We currently have six short-cycle projects, including Bay Parc, ongoing in our portfolio. During 2019, we completed 150 apartment homes, with another 21 homes under construction as of December 31, 2019.

When short-cycle redevelopments are not possible, we may engage in redevelopment activities where an entire building or community is vacated. Additionally, we undertake some ground-up development when warranted by risk-adjusted investment returns, either directly or in connection with the redevelopment of an existing apartment community. The following table summarizes our investments related to these long-cycle developments and redevelopments as of December 31, 2019 (dollars in millions):