Table of Contents

 
 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_______________________________________
Form 10-K
(Mark One)
xANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
 For the fiscal year ended December 31, 20152016
OR
oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
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)
Maryland (Apartment Investment and Management Company) 84-1259577 
Delaware (AIMCO Properties, L.P.) 84-1275621 
(State or other jurisdiction of
incorporation or organization)
 
(I.R.S. Employer
Identification No.)
 
    
4582 South Ulster Street, Suite 1100   
Denver, Colorado 80237 
(Address of principal executive offices) (Zip Code) 
(303) 757-8101
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
 
Title of Each Class  Name of Each Exchange on Which Registered 
Class A Common Stock (Apartment Investment and Management Company)  New York Stock Exchange 
Class A Cumulative Preferred Stock (Apartment Investment and Management Company) New York Stock Exchange 
Class Z Cumulative Preferred Stock (Apartment Investment and Management Company) New York Stock Exchange 
Securities registered pursuant to Section 12(b)12(g) of the Act:
  
None (Apartment Investment and Management Company)
Partnership Common Units (AIMCO Properties, L.P.)
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined by Rule 405 of the Securities Act.
 
Apartment Investment and Management Company: Yes x    No o
AIMCO Properties, L.P.: Yes x    No o
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.
 
Apartment Investment and Management Company: Yes o    No x
AIMCO Properties, L.P.: Yes o    No x
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (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.
 
Apartment Investment and Management Company: Yes x    No o
AIMCO Properties, L.P.: Yes x    No o
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site,Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).
 
Apartment Investment and Management Company: Yes x    No o
AIMCO Properties, L.P.: Yes x    No o
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.
 
Apartment Investment and Management Company: Yes x    No o
AIMCO Properties, L.P.: Yes x    No o



Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer,” “non-accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.
 
Apartment Investment and Management Company:
 Large accelerated filerx Accelerated filero
 Non-accelerated filero(Do not check if a smaller reporting company)Smaller reporting companyo
 
AIMCO Properties, L.P.:
 Large accelerated filero Accelerated filerx
 Non-accelerated filero(Do not check if a smaller reporting company)Smaller reporting companyo
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
 
Apartment Investment and Management Company: Yes o    No x
AIMCO Properties, L.P.: Yes o    No x
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 $5.7$6.9 billion as of June 30, 2015.2016. As of February 25, 2016,23, 2017, there were 156,599,775157,017,376 shares of Class A Common Stock outstanding.
As of February 25, 2016,23, 2017, there were 164,453,698 shares of164,649,570 Partnership Common Units 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 26, 2016,25, 2017, are incorporated by reference into Part III of this Annual Report.
 



EXPLANATORY NOTE
This filing combines the Annual Reports on Form 10-K for the fiscal year ended December 31, 2015,2016, 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, 2015,2016, owned a 95.2%95.4% ownership interest in the common partnership units of, the Aimco Operating Partnership. The remaining 4.8%4.6% 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 any assets which it may acquire including all proceeds from the offerings of its securities. In exchange for the contribution of these assets, 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 present our business as a whole, in the same manner our management views and operates the business;
We eliminate duplicative disclosure and provide a more streamlined and readable presentation since a substantial portion of the disclosures apply to both Aimco and the Aimco Operating Partnership; and
We save time and cost through the preparation of a single combined report rather than two separate reports.
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.
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'entity’s stockholders’ equity or partners'partners’ capital, 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.





APARTMENT INVESTMENT AND MANAGEMENT COMPANY
AIMCO PROPERTIES, L.P.
TABLE OF CONTENTS
ANNUAL REPORT ON FORM 10-K
For the Fiscal Year Ended December 31, 20152016
  
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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 Federalfederal securities laws, including, without limitation, statements regarding: our ability to maintain current or meet projected occupancy;occupancy, rental rates and property operating results; the effect of acquisitions, dispositions, developments and redevelopments; our ability to meet budgeted costs and timelines, and achieve budgeted rental rates related to our development and redevelopment 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: real
Real estate and operating risks, including fluctuations in real estate values and the general economic climate in the markets in which we operate and competition for residents in such markets; national and local economic conditions, including the pace of job growth and the level of unemployment; the amount, location and quality of competitive new housing supply; financingthe timing of acquisitions, dispositions, redevelopments and developments; and changes in operating costs, including energy costs;
Financing risks, including the availability and cost of capital markets financing and the risk that our cash flows from operations may be insufficient to meet required payments of principal and interest;interest and the risk that our earnings may not be sufficient to maintain compliance with debt covenants;
Insurance risks, including the cost of insurance and natural disasters and severe weather such as hurricanes; and
Legal and regulatory risks, including costs associated with prosecuting or defending claims and any adverse outcomes; the terms of governmental regulations that affect us and interpretations of those regulations; the competitive environment in which we operate; the timing of acquisitions, dispositions, redevelopments and developments; insurance risk, including the cost of insurance; natural disasters and severe weather such as hurricanes; litigation, including costs associated with prosecuting or defending claims and any adverse outcomes; energy costs; and possible environmental liabilities, including costs, fines or penalties that may be incurred due to necessary remediation of contamination of apartment communities presently or previously owned by us.
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.
PART I

Item 1. Business
The Company
Apartment Investment and Management Company, or Aimco, is a Maryland corporation incorporated on January 10, 1994. Aimco is a self-administered and self-managed real estate investment trust, or REIT. AIMCO Properties, L.P., or the Aimco Operating Partnership, is a Delaware limited partnership formed on May 16, 1994, to conduct our business, which isREIT, focused on the ownership, management, redevelopment and limited development of quality apartment communities located in the largest coastal and job growth markets of the United States.
Aimco, through its wholly-owned subsidiaries, AIMCO-GP, Inc. and AIMCO-LP Trust, owns a majority of the ownership interests in AIMCO Properties, L.P., or the Aimco Operating Partnership.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. 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, high performance partnership units and partnership preferred units, which we refer to as common OP Units, HPUs and preferred OP Units, respectively. We also refer to HPUs as common partnership unit equivalents. At
As of December 31, 2015, after eliminations for units held by consolidated entities, the Aimco Operating Partnership had 164,179,533 common partnership units and equivalents outstanding. At December 31, 2015, Aimco owned 156,326,416 of the common partnership units (95.2% of the outstanding common partnership units and equivalents of the Aimco Operating Partnership) and Aimco had outstanding an equal number of shares of its Class A Common Stock, which we refer to as Common Stock.
As of December 31, 2015,2016, our real estate portfolio consisted of 196189 apartment communities with 49,14946,311 apartment homes.

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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, as measured byholders. We measure our total return using growth in Economic Income and our current return using Adjusted Funds From Operations (each of which are defined under the Non-GAAP Performance and Liquidity Measures heading in Item 7). Our business plan to achieve this principal financial objective is to:
operate our portfolio of desirable apartment homes with valued amenities, with a high level of focus on customer selection and customer satisfaction, and in an efficient manner that realizes the benefits of our corporate systems and local management expertise;
improve our geographically diversified portfolio of apartment communities, which averageis diversified both by geography and by price point, and which averages “B/B+” in quality (defined under the Portfolio Management heading below)in the Executive Overview in Item 7) by selling lower rated apartment communities with lower projected free cash flow returns and investing the proceeds from such sales through property upgrades, redevelopment, development and acquisition of higher-quality apartment communities;acquisitions with projected free cash flow returns higher than expected from the communities sold;
provideuse financial leverage primarily byin the useform of non-recourse, long-dated, fixed-rate property debt and perpetual preferred equity, a combination which reduces our refunding and re-pricing risk and which provides a hedge against increases in interest rates; and
emphasize a collaborative, respectful and performance-oriented culture while maintainingwith high morale and team engagement.
Our long-standing business is organized around our strategic areas of focus: excellence in property operations; adding value through redevelopment and limited development; upgrading our portfolio through disciplined portfolio management; maintaining a safe and liquid balance sheet; and fostering a performance culture. Our strategic areas of focus are described in more detail below. Recent accomplishments in the execution of such strategies are discussed in the Executive Overview in Item 7.
Property Operations
We own and operate a diversified portfolio of conventional apartment communities.communities, diversified by both geography and price point, as further discussed in Portfolio Management below. We also operate a portfolio of affordable apartment communities, which primarily consists of apartmentscommunities owned through low-income housing tax credit partnerships, and with rents that are generally paid, in whole or part, by a government agency. As the tax credit delivery or compliance periods for our affordablethese apartment communities expire, between 20162017 and 2023, we expect to sell these apartment communities and reinvest the proceeds in our conventional portfolio. Our conventional and affordable portfolios comprise our reportable segments.
Our property operations are primarily organized into two geographic areas, the East and West. To manage our portfolio more 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 senior management reviews.oversight. 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, and other capital assets, we have specialized teams that manage capital spending related to larger capitalredevelopments and construction projects,developments, thus reducing the need for the area operations leaders to spend time on oversight of such projects.activities.
We seek to improve our property operations by: employing service-oriented, well-trained employees; upgrading systems;team members; taking advantage of advances in technology; standardizing business processes, operational measurements and internal reporting; and enhancing financial controls over field operations. We focus on the following areas:
Customer Satisfaction. Our operating culture is focused on our residents and weresidents. We regularly monitor and evaluate our performance through a customer satisfaction tracking system.system, and we publicly report these results. Our goal is to provide our residents with a high level of service in clean, safe and attractive communities. We believe that higher customer satisfaction leads to higher resident retention, which in turn leads to higher revenue and reduced costs. We have automated certain aspects of our on-site operations to enable our current and future residents to interact with us using methods that are efficient and effective for them, such as making on-line requests for service work taking self-guided apartment community tours and executing leases and lease renewals on-line. In addition, we emphasize the quality of our on-site employeesteam members through recruiting, training and retention programs as well as providing continuous, real-time feedback, which we believe contributes to improved customer service and leads to increased occupancy rates and enhanced operational performance.

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Resident Selection and Retention. In apartment communities, neighbors are a meaningful part of the value provided, together with the location of the community and the physical quality of the apartment homes. Part of our property operations strategy is to focus on attracting and retaining credit-worthy residents who are also good neighbors. We have structured goals and coaching for all of our sales personnel, a tracking system for inquiries and a standardized renewal communication program. We have standardized residential financial stability requirements and have policies and monitoring practices to maintain our resident quality.

Revenue Management and Ancillary Services. For our conventional apartment communities, we have a centralized revenue management system that leverages people, processes and technology to work in partnership with our area operational management teams to develop rental rate pricing. We seek to increase revenue, net operating income and free cash flow by optimizing the balance between rental and occupancy rates, as well as taking into consideration the cost of preparing an apartment home for a new resident. We are also focused on careful measurements of on-site operations, as we believe that timely and accurate collection of apartment community performance and resident profile data will enable us to maximize revenue through better property management and leasing decisions. We seek to maximize rental revenue withprofit by performing timely data and analysis of new and renewal pricing for each apartment home, thereby enabling us to respondadjust rents quickly in response to changes in supply and demand.demand and minimize vacancy time. We also generate incremental revenue by providing services to our residents, including, at certain apartment communities, telecommunications services, appliance rental, carport, premier parking garageoptions and storage space rental.
Controlling Expenses. Cost controls are accomplished by local focus at the area level; centralizing tasks that can be more efficiently performed by specialists in our shared service center, which reduces costs and allows our site teams to focus on sales and service; taking advantage of economies of scale at the corporate level; and through electronic procurement. Refer to the Results of Operations discussion within Item 7 for further information regarding our cost controls.procurement; and focusing on life cycle costs by investing in more durable, longer-lived materials, which reduce turn times and costs.
MaintainingImproving and ImprovingMaintaining Apartment Community Quality. We believe that the physical condition and amenities of our apartment communities are important factors in our ability to maintain and increase rental rates. We invest in the maintenance and improvement of our apartment communities primarily through: Property Upgrades, which may include kitchen and bath remodeling, energy conservation projects and investments in longer-lived materials as described above, all of which are generally lesser in scope than redevelopment additions and do not significantly disrupt property operations; Capital Improvements, which are non-redevelopment capital additions that are made to enhance the value, profitability or useful life of an assetapartment community from its condition at the date of our purchase;original purchase condition; and Capital Replacements, which are capital additions made to replace capital assetsthe portion of an apartment community consumed during our ownership; andownership period. During 2016, we invested approximately $2,000 per apartment home in Property Upgrades, which may include kitchen$400 per apartment home in Capital Improvements and bath remodeling, energy conservation projects, and investments$1,100 per apartment home in longer-lived materials designed to reduce turnover costs, such as simulated wood flooring and granite countertops.Capital Replacements at our conventional apartment homes.
Redevelopment and Development
We invest in the redevelopment of certain apartment communities in superior locations, when we believe the investment will yield risk-adjusted returns in excess of those from apartment communities sold in paired trades or in excess of the cost of equity issued to fund the equity component of the redevelopments. We expect to create value equal to 25% to 35% of our investment in our redevelopments.
We have historically undertaken a range of redevelopment projects: fromredevelopments, including those in which buildings or exteriors are renovated without the need to vacate apartment homes; to those in which significant renovation of apartment homes may be accomplished upon lease expiration;expiration and toturnover; and those in which an entire building or community is wholly vacated. We primarily execute our redevelopment projectsredevelopments using a phased approach, wherein which we renovate portions of an apartment community in stages, which allows additional flexibility in project coststhe timing and amount of our investment and the ability to tailor our product offerings to customer response and rent achievement. Redevelopment and development work may include seeking entitlements from local governments, which, for redevelopments, enhance the value of our existing portfolio by increasing density, that is, the right to add apartment homes to a site. We have a specialized Redevelopment and Construction Services team which oversees these projects and uses third party contractors with expertise in the local markets.
On a more limited basis,In addition, we may undertake ground-up development, either directly in connection with the redevelopment of an existing apartment community or on a more limited basis at a new location. In the very limited instances wheresuch cases, we elect to complete ground-up development inmay rely on a new location (such as our One Canal development in Boston, Massachusetts), we have done so with a third party development partnerthird-party developer with expertise in the local market and where such partner has accepted or substantially mitigated entitlement andwith contracts that limit our exposure to construction risks.risk.
Portfolio Management
Portfolio management involves the ongoing allocation of investment capital to meet our geographic and product type goals. We target geographic diversification in our portfolio in order to optimize risk-adjusted returns and to avoid the risk of undue concentration in any particular market. We seek to balance the portfolio by owning communities that offer apartment homes with a range of prices so as to diversify our exposure to economic downturns and to competitive new building supply. We also seek to own properties with the potential for profitable redevelopment.
Our portfolio strategy seeks predictable rent growth from a portfolio of apartment communities that is diversified across “A,” “B” and “C+” quality conventional apartment communities,price points, averaging “B/B+” in quality, and that is also diversified among the largest coastal and job growth markets in the United States,

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as measured by total apartment value. We measure conventional apartment community quality by comparingStates. Please refer to the average rentsExecutive Overview heading under Item 7 for a description of our apartment homes to local market average rents as reported by a third-party providerportfolio quality ratings.

As part 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 the local market average, as “B” quality apartment communities those earning rents between 90% and 125% of the local market average; “C+” quality assets are those with rents greater than $1,100 per month, but lower than 90% of local market average; and “C” quality assets are those with 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 the local market average rents where the portfolio is located. Although some companies and analysts within the multifamily real estate industry use apartment community class 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 timing for which local markets 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.
Our portfolio strategy, iswe seek to sell each year the 5%up to 10% of the apartment communities in our portfolio with lower projected free cash flow returns lower operating margins, and lower expected future rent growth, andto reinvest the sale proceeds from such sales in apartmentproperty upgrades, redevelopment of communities already in our current portfolio, through property upgrades and redevelopment, or through the purchaseoccasional development of other apartmentnew communities and in limited situations,selective acquisitions with projected free cash flow returns higher than expected from the developmentcommunities sold. Through this disciplined approach to capital recycling, we have significantly increased the quality and expected growth rate of apartment communities. We execute our strategy through paired trades when the investment will yield risk-adjusted returns in excess of those of the apartment community sold and when portfolio quality is enhanced. Whenever possible, we structure transactions in a tax-efficient manner to preserve our invested capital.portfolio.
Balance Sheet and Liquidity
Our leverage strategy seeks to increase financial returns while using leverage with appropriate caution. We target the ratio of Proportionate Debt plus Preferred Equity to Adjusted EBITDA to be below 7.0x and we target the ratio of Adjusted EBITDA Coverage ofto Adjusted Interest Expense and Preferred Dividends to be greater than 2.5x. We also focus on the ratios of Proportionate Debt to Adjusted EBITDA and Adjusted EBITDA Coverageto Adjusted Interest Expense. Please refer to the Non-GAAP Measures heading under Item 7 for definitions of Interest.these terms.
The majorityApproximately 94% of our leverage approximately 93% at December 31, 2015, consists2016, consisted of property-level, non-recourse, long-dated, amortizing debt, and 6% at December 31, 2015, consistsconsisted of perpetual preferred equity,equity. Our leverage had weighted average maturity of 9.8 years (assuming a combination which40 year term for perpetual preferred equity) and a weighted average cost of 4.90%. The composition of our leverage reduces our refunding and re-pricing risk. The majorityApproximately 98% of our property-level debt is fixed-rate, which provides a hedge against increases in interest rates, capitalization rates and inflation.
Although our primary sourcessource of leverage areis property-level, non-recourse, long-dated, fixed-rate, amortizing debt, and perpetual preferred equity, we also have a revolving credit arrangement, which we use for working capital and other short-term purposes. Please refer to the Executive Overview and Liquidity and Capital Resources headings under Item 7 for additional information regarding our balance sheet and liquidity.
Culture
Our culture is the key to our success. Our emphasis on a collaborative, respectful and performance-oriented culture is what enables the continuing transformation of the Aimco business. In 2015,2016, Aimco was recognized by the Denver Post as a Top Work Place for the thirdfourth consecutive year. We were one of only three mid-size companies to be named a Top Work Place in Colorado for the past four consecutive years.
Competition
In attracting and retaining residents to occupy our apartment communities we compete with numerous other housing alternatives. 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 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 communities and on the rents we charge. In certain markets there exists an oversupply of single-family homes and condominiums relative to consumer demand, which affect 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 for which we dispose of such communities.

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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. Aimco’s current and continuing qualification as a REIT depends on its ability to meet theThe Code imposes various requirements imposed by the Code, which relaterelated to organizational structure, distribution levels, diversity of stock ownership and certain restrictions with regard to owned assets and categories of income.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 Federalfederal 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.
Even if Aimco continues to qualify 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 also will be required to pay a 100% tax on any net income on non-arm’s length transactions between Aimco and a taxable REIT subsidiary (described below) and on any net income from sales of apartment communities that were held for sale to customers in the ordinary course. In addition, Aimco could also be subject to the alternative minimum tax, or AMT, on items of tax preference. 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, including those in which Aimco transacts business. Any taxes imposed on Aimco reduce our operating cash flow and net income.
Certain of Aimco’s operations or a portion thereof, including property management, asset 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 Federalfederal 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, including redevelopment communities.
The Aimco Operating Partnership
The Aimco Operating Partnership is treated as a “pass-through” entity for United States Federalfederal income tax purposes and is not subject to United States Federalfederal income taxation. Each of its partners,Partners in the Aimco Operating Partnership, however, isare subject to tax on his or hertheir allocable share of partnership tax items, including partnership income, gains, losses, deductions and credits, or Partnership Tax Items, for each taxable year during which he or she is a partner, regardless of whether he or she receivesthe 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 partnership tax item is determined by us,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. AIMCO-GP, Inc., the general partner, is our “tax matters partner” for United States Federal income tax purposes. The tax matters partner is authorized, but not required, to take certain actions on behalf of the Aimco Operating Partnership with respect to tax matters. 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 apartment 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, future enactment of rent control or rent stabilization laws, such as legislation that has been considered in New York and certain cities in California, or other laws regulating multifamily housing may reduce rental revenue or increase operating costs in particular markets.
Environmental
Various Federal,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 apartment communities, communities we acquire or manage in

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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, “Risk1A. Risk Factors.
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.
Employees
At December 31, 2015,2016, we had 1,591 employees,1,456 team members, of which 1,108978 were at the apartment community level, performing various on-site functions, with the balance managing corporate and area operations, including investment and debt transactions, legal, financial reporting, accounting, information systems, human resources and other support functions. As of December 31, 2015,2016, unions represented 8981 of our employees.team members. We have never experienced a work stoppage and believe we maintain satisfactory relations with our employees.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. Aimco’s Common

Stock is listed on the New York Stock Exchange under the symbol “AIV.” In 2015,2016, Aimco’s chief executive officer submitted his annual corporate governance listing standards certification to the New York Stock Exchange, which certification was unqualified.
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.
Redevelopment, development and construction risks could affect our profitability.
We are currently redeveloping, and we intend to continue to redevelop, certain of our apartment communities. Additionally, we are developing a 12-story apartment building in Boston, Massachusetts. During 2016,2017, we expect to invest approximately $180invest $100 million to $220$200 million in conventional redevelopmentredevelopment and development activities. Redevelopment and development activities are subject to the following risks:
we may be unable to obtain, or experience delays in obtaining, necessary zoning, occupancy, or other required governmental or third partythird-party permits and authorizations, which could result in increased costs or the delay or abandonment of opportunities;
we may incur costs that exceed our original estimates due to increased material, labor or other costs, such as litigation;
we may be unable to complete construction and lease uplease-up of an apartment community on schedule, resulting in increased construction and financing costs and a decrease in expected rental revenues;
occupancy rates and rents at an apartment community may fail to meet our expectations for a number of reasons, including changes in market and economic conditions beyond our control and the development by competitors of competing communities;
we may be unable to obtain financing with favorable terms, or at all, which may cause us to delay or abandon an opportunity;
we may abandon opportunities that we have already begun to explore, or stop projects we have already commenced, for a number of reasons, including changes in local market conditions or increases in construction or financing costs, and, as a result, we may fail to recover costs already incurred in exploring those opportunities;
we may incur liabilities to third parties during the redevelopment or development process;
unexpected events or circumstances may arise during the redevelopment or development process that affect the timing of completion and the cost and profitability of the project;redevelopment or development; and
loss of a key member of a projectredevelopment or development team could adversely affect our ability to deliver projectsredevelopments and developments on time and within our budget.

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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 Net Asset Value, Adjusted Funds From Operations, Pro forma Funds From Operations and property net operating income, 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 community.
Acquisitions of under development or unoccupied apartment communities may fail to perform as expected.
We may acquire apartment communities that are under development or otherwise unoccupied at the time of acquisition, and we may not be able to achieve expected occupancy levels or rental rates for these communities, resulting in lower than expected net operating income. Additionally, we may underestimate the costs necessary to bring such communities up to expected occupancy levels, which may result in lower than expected net operating income for these communities.
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 cannot always 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.
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.
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 apartment 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 apartment communities, we may not be able to preserve the competitiveness of our communities, which could adversely affect our net operating income and long term value.
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:
the general economic climate;
an inflationary environment in which the costs to operate and maintain our communities increase at a rate greater than our ability to increase rents, which we can only do upon renewal of existing leases or at the inception of new leases;
competition from other apartment communities and other housing options;
local conditions, such as loss of jobs, unemployment rates or an increase in the supply of apartments, that might adversely affect apartment occupancy or rental rates;
changes in governmental regulations and the related cost of compliance;
changes in tax laws and housing laws, including the enactment of rent control laws or other laws regulating multifamily housing; and
changes in interest rates and the availability of financing.

Competition could limit our ability to lease apartment homes or increase or maintain rents.
8Our 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.

TableReal estate investments are relatively illiquid and cannot always 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 Contentsapartment 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 free cash flow internal rate of returns and are accretive to Net Asset Value, 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 community. This could have an adverse effect on our financial condition or results of operations.
Our existing and future debt financing could render us unable to operate, 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 loss of income and asset value to us. As of December 31, 2015,2016, 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 Credit Agreement,revolving credit agreement, more difficult. Additionally, Federal Home Loan Mortgage Corporation, or Freddie Mac, and Federal National Mortgage Association, or Fannie Mae, have historically provided significant capital at a relatively low cost to finance multifamily properties. Freddie Mac and Fannie Mae are under conservatorship by the Housing Finance Agency, and their future role in the housing finance market is uncertain. If there is any significant reduction in Freddie Mac’s or Fannie Mae’s level of involvement in the secondary credit markets, it may adversely affect the pricing at which we may obtain non-recourse property debt financing.
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, each of which would adversely affect our liquidity.
Increases in interest rates would increase our interest expense and reduce our profitability.
As of December 31, 2015,2016, on a consolidated basis, we had approximately $111.9$101.5 million of variable-rate indebtedness outstanding. We estimate that an increase in 30-day LIBOR of 100 basis points with constant credit risk spreads would result inreduce our net income and the amount of net income attributable to our common security holders (including Aimco common stockholders and the Aimco Operating Partnership’s common unitholders) being reduced (or the amounts of net loss and net loss attributable to our common equity holders being increased) by approximately $0.9 million on an annual basis.

At December 31, 2015,2016, we had approximately $137.7$131.2 million in cash and cash equivalents and restricted cash, a portion of which bear interest at variable rates indexed to LIBOR-based rates, and which may mitigate the effect of an increase in variable rates on our variable-rate indebtedness discussed above.
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 Credit Agreementrevolving credit agreement provides, among other things, that we may make distributions to our investors during any four consecutive fiscal quarters in an aggregate amount that does not exceed the greater of 95% of our 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. Our outstanding classes of preferred stock or 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 stock or preferred units are entitled.
Our subsidiaries may be prohibited from making distributions and other payments to us.
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 other subsidiaries. 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 collective 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

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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.
Potential liability or other expenditures associated with potential environmental contamination may be costly.
Various Federal,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.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 Federalfederal 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 requirements for disabled access. For those projectsapartment communities receiving Federalfederal funds, the Rehabilitation Act of 1973 also has requirements regarding disabled access. These and other Federal,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 issues 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. Because the law regarding mold is unsettled and subject to change, we can make no assurance that liabilities resulting from the presence of or exposure to mold will not have a material adverse effect on our consolidated financial condition or results of operations.
We may be subject to litigation associated with partnership transactions that could increase our expenses and prevent completion of beneficial transactions.
We have engaged in, and may continue to engage in, the selective acquisition of interests in partnerships controlled by us that own apartment communities. In some cases, we have acquired the general partner of a partnership and then made an offer to acquire the limited partners’ interests in the partnership. In these transactions, we may be subject to litigation based on claims that we, as the general partner, have breached our fiduciary duty to our limited partners or that the transaction violates the relevant partnership agreement or state law. Although we intend to comply with our fiduciary obligations and the relevant partnership agreements, we may incur costs in connection with the defense or settlement of this type of litigation. In some cases, this type of litigation may adversely affect our desire to proceed with, or our ability to complete, a particular transaction. Any litigation of this type could also have a material adverse effect on our financial condition or results of operations.

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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.
We own equity interests in consolidated and unconsolidated 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;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.
Additionally, there is no guarantee that the government will continue to operate these programs or that the programs will be operated in a manner that generates benefits consistent with those received in the past. Any cessation of or change in the administration of benefits from these government housing programs may result in our loss or reduction in the amount of the benefits we receive under these programs, including rental subsidies. During 2016, 2015, 2014 and 2013, for continuing and discontinued operations,2014, our rental revenues include $80.2 million, $73.4 million $74.6 million and $88.4$74.6 million, respectively, of subsidies from government agencies. Of the 20152016 subsidies, approximately 14.5%13.6% related to communities benefiting from housing assistance contracts that expired in late 2015 or expire in 2016,2017, which we are in the process of renewing or anticipate renewing, and the remainder related to communities benefiting from housing assistance contracts that expire after 20162017 and have a weighted average term of 8.28.4 years. Any loss or reduction in the amount of these benefits may adversely affect our liquidity and results of operations.
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

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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.
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 Federalfederal income tax at regular corporate rates, including any applicable alternative minimum tax, or AMT. 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 Credit Agreement.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 Federalfederal income tax purposes. 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 Federalfederal 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. As Aimco’s operating partnership, theThe Aimco Operating Partnership pays distributions intended to enable Aimco to satisfy Aimco’sits 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 Federalfederal 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 Federalfederal 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'snon-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 to customers in the ordinary course. In addition, Aimco could be subject to alternative minimum tax, or AMT, on items of tax preference. State and local tax laws may not conform to the United States Federalfederal income tax treatment, and Aimco may be subject to state or local taxation in various state or local jurisdictions, including those 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.
Recent Legislative or regulatory action could adversely affect stockholders.
Regular corporate dividends are taxed at a lower rate than REIT dividends, which could cause non-corporate investors to perceive investments in REITs to be relatively less attractive than investments in the stock of non-REIT corporations that pay dividends, which could adversely affect the value of Aimco Common Stock. However, as a REIT, Aimco generally would not be subject to federal or state corporate income taxes on that portion of its ordinary income or capital gain that it distributes currently to its stockholders, and we thus expect to avoid the “double taxation” to which other corporations are typically subject. Investors are urged to consult their tax advisors with respect to the tax rates that apply to them.
It is possible that future legislation would result in a REIT having fewer tax advantages and it could become more advantageous for a company that invests in real estate to elect to be taxed, for federal income tax purposes, as a corporation. Tax law changes may adversely affect the taxation of a stockholder. Any such changes could have an adverse effect on an investment in Aimco Common Stock or on the market value or the sale potential of our assets.
Tax Legislation Impacts Certain U.S. Federal Income Tax Rules Applicable to REITsREITs.
The recently enacted Protecting Americans from Tax Hikes Act of 2015, or PATH Act, contains changes to certain aspects of the U.S. federal income tax rules applicable to REITs. The PATH Act modifies various rules that apply to a REIT’s ownership of and business relationship with its TRS entities, and reduces (beginning in 2018) the value of a REIT’s assets that may be in TRS entities from 25% to 20%. The PATH Act makes permanent the reduction of the period (from ten years to five years) during which a REIT is subject to corporate-level tax on the recognition of built-in gains in assets of an acquired corporation. The PATH Act also makes multiple changes related to the Foreign Investment in Real Property Tax Act, expands prohibited transaction safe harbors and qualifying hedges, and repeals the preferential dividend rule for publicly-offered REITs. Lastly, the PATH Act adjusts the way a REIT calculates earnings and profits in certain circumstances to avoid double taxation at the shareholderstockholder level, and expands the types of assets and income treated as qualifying for purposes of the REIT requirements. Investors are urged to consult their tax advisors with respect to these changes and the potential impacteffect on their investment in our common stock and debt securities.Aimco’s Common Stock.

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Limits on ownership of shares 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 Federalfederal 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 18.0% 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:
the transfer will be considered null and void;
we will not reflect the transaction on Aimco’s books;
we may institute legal action to enjoin the transaction;

we may demand repayment of any dividends received by the affected person on those shares;
we may redeem the shares;
the affected person will not have any voting rights for those shares; and
the shares (and all voting and dividend rights of the shares) will be held in trust for the benefit of one or more charitable organizations designated by Aimco.
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:
may lose control over the power to dispose of such shares;
may not recognize profit from the sale of such shares if the market price of the shares increases;
may be required to recognize a loss from the sale of such shares if the market price decreases; and
may be required to repay to us any distributionsdividends received from us as a result of his or her ownership of the shares.
Aimco’s charter may limit the ability of a third partythird-party to acquire control of Aimco.
The 8.7% ownership limit discussed above may have the effect of delaying or precluding acquisition of control of Aimco by a third partythird-party 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, 2015,2016, 500,787,260 shares were classified as Common Stock, of which 156,326,416156,888,381 were outstanding, and 9,800,240 shares were classified as preferred stock, of which 6,391,6435,000,000 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, even if a change in control were in Aimco’s stockholders’ best interests.
The Maryland General Corporation Law may limit the ability of a third partythird-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, even if an acquisition would be 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

13


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:
has at least three directors who are not officers or employees of the entity or related to an acquiring person; and
has a class of equity securities registered under the Securities Exchange Act of 1934, as amended,
may elect in its charter or bylaws or by resolution of the board of directors to be subject to all or part of a special subtitle that provides that:
the corporation will have a staggered board of directors;
any director may be removed only for cause and by the vote of two-thirds of the votes entitled to be cast in the election of directors generally, even if a lesser proportion is provided in the charter or bylaws;
the number of directors may only be set by the board of directors, even if the procedure is contrary to the charter or bylaws;
vacancies may only be filled by the remaining directors, even if the procedure is contrary to the charter or bylaws; and

the secretary of the corporation may call a special meeting of stockholders at the request of stockholders only on the written request of the stockholders entitled to cast at least a majority of all the votes entitled to be cast at the meeting, even if the procedure is contrary to the charter or bylaws.
To date, Aimco has not made any of the elections described above.
Item 1B. Unresolved Staff Comments
None.
Item 2. Properties
Our portfolio includes garden style, mid-rise and high-rise apartment communities located in 22 states and the District of Columbia. Our geographic allocationportfolio strategy focuses onseeks predictable rent growth from a portfolio of apartment communities diversified among the largest coastal and job growth markets in the United States.States, and that is diversified across “A,” “B” and “C+” price points, averaging “B/B+” in quality. As of December 31, 2016, our portfolio of conventional apartment communities consisted of roughly 50% “A” quality communities and 50% “B” and “C+” quality communities (as measured by gross asset value). Please refer to the Executive Overview heading under Item 7 for a description of our portfolio quality ratings. The following table sets forth information on all of our apartment communities as of December 31, 2015:2016:
Number of Apartment Communities Number of Apartment Homes Average OwnershipNumber of Apartment Communities Number of Apartment Homes Average Economic Ownership
Conventional:          
Atlanta8
 1,497
 99%5
 817
 100%
Bay Area11
 2,169
 100%12
 2,632
 100%
Boston15
 4,689
 100%15
 4,689
 100%
Chicago10
 3,246
 100%10
 3,246
 100%
Denver8
 2,065
 98%8
 2,065
 98%
Greater DC14
 6,547
 100%
Greater LA15
 5,313
 88%
Greater Washington DC13
 5,325
 99%
Los Angeles14
 4,543
 86%
Miami5
 2,571
 100%5
 2,612
 100%
New York18
 1,040
 100%18
 1,040
 100%
Philadelphia6
 3,525
 98%5
 2,802
 97%
San Diego12
 2,423
 97%12
 2,423
 97%
Seattle2
 239
 100%2
 239
 100%
Total target markets124
 35,324
 97%119
 32,433
 97%
Other markets16
 5,140
 98%15
 5,489
 99%
Total conventional owned and managed140
 40,464
 98%
Total conventional owned134
 37,922
 97%
Affordable56
 8,685
 95%55
 8,389
 95%
Total196
 49,149
 97%189
 46,311
 98%

14


At December 31, 2015,2016, we owned an equity interest in and consolidated within our financial statements 185178 apartment communities containing 48,32045,482 apartment homes. These consolidated apartment communities contain,contained, on average, 261256 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, and other amenities, clubhouses, spas, fitness centers, dog parks and large open spaces. Many of the apartment homes offer features such as granite countertops, wood flooring, and cabinets, stainless steel appliances, fireplaces, spacious closets, washer and dryer connections, and balconies and patios. Some of our premier apartment communities also offer premium features including designer kitchens and bathroom finishes. Additional information on our consolidated apartment communities is contained in “Schedule III - Real Estate and Accumulated Depreciation” in this Annual Report on Form 10-K. At December 31, 2015,2016, we also held an equity interest in and did not consolidate within our financial statements 11 apartment communities containing 829 apartment homes.
The majority of our consolidated apartment communities are encumbered by property debt. At December 31, 2015, 1572016, 155 of our consolidated apartment communities were encumbered by, in aggregate, $3.8$3.9 billion of property debt with a weighted average interest rate of 5.01%4.78% and a weighted average maturity of 8.1 years, respectively.8.0 years. Each of the non-recourse property debt instruments comprising this total are collateralized by one of our apartment communities, without cross-collateralization, with an estimated aggregate gross bookfair value of $6.9$11.9 billion. Refer to Note 54 to the consolidated financial statements in Item 8 for additional information regarding our property debt. As of December 31, 2015,2016, we had anheld unencumbered pool that included 25 consolidated apartment communities and hadwith an estimated fair value of $1.8$1.6 billion. At December 31, 2015, we also had two recently acquired consolidated apartment communities which we anticipate encumbering but for which financing was not yet in place.

Item 3. Legal Proceedings
As further discussed in Note 75 to the consolidated financial statements in Item 8, we are engaged in discussions with regulatory agencies regarding environmental matters at apartment communities we, or predecessor entities, previously owned. Although the outcome of the process we are undergoing for these environmental 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.

15


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. The following table sets forth the quarterly high and low sales prices of our Common Stock, as reported on the NYSE, and the dividends declared in the periods indicated:
Quarter EndedHigh Low 
Dividends
Declared
(per share)
High Low 
Dividends
Declared
(per share)
December 31, 2016$45.45
 $39.88
 $0.33
September 30, 201647.59
 43.30
 0.33
June 30, 201644.16
 39.57
 0.33
March 31, 201641.82
 35.45
 0.33
     
December 31, 2015$40.83
 $35.88
 $0.30
$40.83
 $35.88
 $0.30
September 30, 201540.43
 34.71
 0.30
40.43
 34.71
 0.30
June 30, 201539.66
 36.52
 0.30
39.66
 36.52
 0.30
March 31, 201541.55
 36.59
 0.28
41.55
 36.59
 0.28
     
December 31, 2014$38.53
 $31.62
 $0.26
September 30, 201434.87
 31.51
 0.26
June 30, 201432.76
 28.95
 0.26
March 31, 201431.28
 25.52
 0.26
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 needsneeds; and other uses of cash, such as for deleveraging and accretive investment activities. Aimco’s Board of Directors targets a dividend payout ratio of approximately 65% of Adjusted Funds From Operations (which is defined in Item 7). In January 2016,2017, Aimco’s Board of Directors declared a cash dividend of $0.33$0.36 per share on its Common Stock. On an annualized basis, this represents an increase of 12%9% compared to the dividends paid in 2015.2016. This dividend is payable on February 29, 2016,28, 2017, to stockholders of record on February 19, 2016.17, 2017. Aimco’s Board of Directors anticipates similar per share quarterly cash dividends for the remainder of 2016.2017. However, the Board of Directors may adjust the dividend amount or the frequency with which the dividend is paid based on then prevailing facts and circumstances.
On February 25, 2016,23, 2017, the closing price of the Common Stock was $36.62$45.96 per share, as reported on the NYSE, and there were 156,599,775157,017,376 shares of Common Stock outstanding, held by 1,9581,842 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 recordholder.
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.
From time to time, Aimco may issue shares of Common Stock in exchange for common and preferred OP Units, tendered to thedefined under The Aimco Operating Partnership heading below. Please refer to Note 7 to the consolidated financial statements in Item 8 for redemption in accordance with the terms and provisionsfurther discussion of the agreement of limited partnership of the Aimco Operating Partnership. Such shares are issued based on an exchange ratio of one share for each common OP Unit or the applicable conversion ratio for preferred OP Units. Additionally, from time to time,such exchanges. Aimco may also issue shares of Common Stock in exchange for limited partnership units in consolidated real estate partnerships that are tendered to the Aimco Operating Partnership for redemption in accordance with the terms and provisions of the related limited partnership agreement. The shares are generally issued in exchange for OP Units or limited partnership units in private transactions exempt from registration under the Securities Act of 1933, as amended, pursuant to Section 4(2) thereof. During the year ended December 31, 2015, we did not issue any shares of Common Stock in exchange for common OP Units or preferred OP Units. During the year ended December 31, 2015, we did not issue any shares of Common Stock in exchange for limited partnership interests in consolidated real estate partnerships. During the year ended December 31, 2016, we did not issue any shares of Common Stock in exchange for OP Units or limited partnership interests in consolidated real estate partnerships.
Aimco’s Board of Directors has, from time to time, authorized Aimco to repurchase shares of its outstanding capital stock. There were no repurchases of Aimco shares during the year ended December 31, 2015.2016. As of December 31, 2015,2016, Aimco was authorized to repurchase approximately 19.3 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.

16


Performance Graph
The following graph compares cumulative total returns for Aimco’s Common Stock, the MSCI US REIT Index, the Standard & Poor’s 500 Total Return Index (the “S&P 500”), and the NAREIT Apartment Index. The MSCI US REIT Index is published by Morgan Stanley Capital International Inc., a provider of equity indices. The NAREIT 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 REIT Index reflects total shareholder return for a broad range of REITs and the NAREIT 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 add them to the index calculation as they become publicly traded companies. All companies ofthat fit the definitional criteria in existenceand 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, 2010,2011, and that all dividends paid have been reinvested. The historical information set forth below is not necessarily indicative of future performance.
For the fiscal years ended December 31,For the fiscal years ended December 31,
Index201020112012201320142015201120122013201420152016
Aimco (1)$100.00
$90.39
$109.99
$108.83
$161.12
$179.08
$100.00
$121.68
$120.41
$178.25
$198.12
$232.37
MSCI US REIT (1)100.00
108.69
128.00
131.17
171.01
175.32
100.00
117.77
120.68
157.34
161.30
175.17
NAREIT Apartment Index (2)100.00
106.93
100.31
140.06
163.10
167.76
S&P 500 (1)100.00
102.11
118.45
156.82
178.28
180.75
100.00
116.00
153.57
174.60
177.01
198.18
NAREIT Apartment Index (2)100.00
115.10
123.08
115.45
161.20
187.72
(1) Source: SNL Financial, LC, Charlottesville, VAan offering of S&P Global Market Intelligence © 20162017
(2) Source: National Association of Real Estate Investment Trusts
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.
The information required by Item 5 with respect to securities authorized for issuance under equity compensation plans set forth below in Part III, Item 12 of this Annual Report, is incorporated herein by reference.

17


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 and high performance 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 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 OP Units. The following table sets forth the distributions declared per common partnership unit in each quarterly period during the two years ended December 31, 20152016 and 2014:2015:
Quarter Ended 2015 20142016 2015
December 31 $0.30
 $0.26
$0.33
 $0.30
September 30 0.30
 0.26
0.33
 0.30
June 30 0.30
 0.26
0.33
 0.30
March 31 0.28
 0.26
0.33
 0.28
We intend for the Aimco Operating Partnership’s future distributions per common partnership unit to be equal to Aimco’s Common Stock dividends.
At February 25, 2016,23, 2017, there were 164,453,698164,649,570 common partnership units and equivalents outstanding (156,599,775(157,017,376 of which were held by Aimco) that were held by 2,8062,731 unitholders of record.
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, subject to our prior right to cause Aimco to acquire some or all of the common OP Units tendered for redemption in exchange for shares of Aimco Common Stock. Common OP Units redeemed for shares of Aimco Common Stock are exchanged on a one-for-one basis (subject to antidilution adjustments).
No common OP Units or preferred OP Units held by Limited Partners were redeemed in exchange for shares of Aimco Common Stock during the year ended December 31, 2015.2016.
The following table summarizes the Aimco Operating Partnership’s repurchases of common OP Units for the three months ended December 31, 2015:2016:
Fiscal period Total Number of Units Purchased Average Price Paid per Unit Total Number of Units Purchased as Part of Publicly Announced Plans or Programs (1) Maximum Number of Units that May Yet Be Purchased Under Plans or Programs (1)
October 1 - October 31, 2015 34,064
 $35.98
 N/A N/A
November 1 - November 30, 2015 5,436
 39.69
 N/A N/A
December 1 - December 31, 2015 3,920
 37.39
 N/A N/A
Total 43,420
 $36.57
    
Fiscal periodTotal Number of Units Purchased Average Price Paid per Unit Total Number of Units Purchased as Part of Publicly Announced Plans or Programs (1) Maximum Number of Units that May Yet Be Purchased Under Plans or Programs (1)
October 1 - October 31, 20162,879
 $42.66
 N/A N/A
November 1 - November 30, 20162,048
 43.23
 N/A N/A
December 1 - December 31, 201627,698
 41.49
 N/A N/A
Total32,625
 $41.70
    
(1)The terms of the Aimco Operating Partnership’s Partnership Agreement do not provide for a maximum number of units that may be repurchased, and other than the express terms of the Aimco Operating Partnership’s Partnership Agreement, the Aimco Operating Partnership has no publicly announced plans or programs of repurchase. However, whenever Aimco repurchases its Common Stock, it is expected that Aimco will fund the repurchase with a concurrent repurchase by the Aimco Operating Partnership of common partnership units held by Aimco at a price per unit that is equal to the price per share paid for the Common Stock. Refer to the preceding discussion of Aimco’s authorization for equity repurchases.
Dividend and Distribution Payments
Our Credit Agreementrevolving 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.

18


Item 6. Selected Financial Data
The following selected financial data is based on audited historical financial statements of Aimco and the Aimco Operating Partnership. 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.
 For The Years Ended December 31,
 2015 2014 2013 2012 2011
 (dollar amounts in thousands, except per share data)
OPERATING DATA:         
Total revenues$981,310
 $984,363
 $974,053
 $958,511
 $914,355
Income (loss) from continuing operations (1)91,390
 67,475
 34,596
 (18,756) (136,237)
Earnings (loss) per common share - basic and diluted:         
Income (loss) from continuing operations attributable to Aimco common stockholders$1.52
 $2.06
 $0.29
 $(0.60) $(1.22)
          
BALANCE SHEET INFORMATION:         
Total assets$6,144,194
 $6,097,028
 $6,079,413
 $6,401,380
 $6,871,862
Total indebtedness3,873,160
 4,135,139
 4,388,185
 4,413,083
 4,488,822
          
OTHER INFORMATION:         
Dividends declared per common share (2)$1.18
 $1.04
 $0.96
 $0.76
 $0.48
 For The Years Ended December 31,
 2016 2015 2014 2013 2012
 (dollar amounts in thousands, except per share data)
OPERATING DATA:         
Total revenues (1)$995,854
 $981,310
 $984,363
 $974,053
 $958,511
Net income (1)483,273
 271,983
 356,111
 237,825
 195,361
Net income attributable to Aimco/the Aimco Operating Partnership per common share/unit – diluted$2.67
 $1.52
 $2.06
 $1.40
 $0.61
          
BALANCE SHEET INFORMATION:         
Total assets (2)$6,232,818
 $6,118,681
 $6,068,631
 $6,046,579
 $6,363,366
Total indebtedness (2)3,884,632
 3,849,141
 4,108,025
 4,355,849
 4,378,966
          
OTHER INFORMATION:         
Dividends/distributions declared per common share/unit$1.32
 $1.18
 $1.04
 $0.96
 $0.76

(1)Effective January 1, 2014, we adopted ASU 2014-08,a new accounting standard, which revised the definition of a discontinued operation. In the selected financial data presentation above, the results of operations for apartment communities sold or classified as held for sale during 2015 and 2014 are reflected within income from continuing operations for all periods presented. The Aimco Operating Partnership's loss from continuing operationstotal revenues for the yearyears ended December 31, 2011, was $134.42013 and 2012 excludes revenue generated by discontinued operations of $62.2 million which differedand $140.6 million, respectively. Net income for the years ended December 31, 2013 and 2012 includes income from Aimco due to interest income earned by the Aimco Operating Partnership on notes receivable from Aimco. The notes were repaid in late 2011discontinued operations, net of tax, of $203.2 million and the interest amounts were eliminated within Aimco's consolidated financial statements.$214.1 million, respectively.
(2)The Aimco Operating Partnership’s distributions declared per common unit equaledEffective January 1, 2016, we adopted new accounting standards, which revised the Aimco dividends declared per common share forpresentation of debt issue costs. In the years endedselected financial data presented above, the total assets and total indebtedness as of December 31, 2012-2015. During2015, 2014, 2013 and 2012, have been recast to reflect the year ended December 31, 2011, the Aimco Operating Partnership's distributions per common included a $0.15 per unit special distribution.reclassification of unamortized debt issue costs related to property debt from total assets to total indebtedness.

19



Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations
Executive Overview
Aimco and the Aimco Operating PartnershipWe are focused on the ownership, management, redevelopment and limited development of quality apartment communities locateddiversified by geography in the largest coastal and job growth markets in the United States. States and also diversified across price points.
Our principal financial objective is to provide predictable and attractive returns to our equity holders, as measured by growth in Economic Income and Adjusted Funds From Operations. Economic Income is our measure of total return and Adjusted Funds From Operations is our measure of current return. In 2016, Economic Income totaled approximately $7 per share, representing a 15% return on our estimated net asset value at the beginning of that measurement period. Adjusted Funds From Operations was $1.97 per share, an increase of 5% as compared to 2015. Our calculation of Economic Income relies upon net asset value, or NAV. NAV and Adjusted Funds From Operations are non-GAAP measures and are defined under the Non-GAAP Measures heading below.
Our business and strategic areas of focus are described in more detail within the Business Overview in Item 1. Execution of our goals within our strategic areas of focus drove goodsolid results for Aimco in 2015, summarized below.
In Property Operations, across our diversified conventional same store portfolio, new and renewal rent growth was 4.9% in 2015, higher than in 2014 by 50 basis points.
In Redevelopment, strong consumer demand for our redeveloped apartment homes drove: the lease up of Ocean House on Prospect in La Jolla, one quarter earlier than expected; absorption above seasonal expectations at Park Towne Place and The Sterling in Philadelphia; and second generation rent increases averaging 13% for our occupancy-stabilized redevelopments at Lincoln Place, Pacific Bay Vistas and Preserve at Marin.
In Portfolio Management, fourth quarter 2015 average revenue per apartment home was up 10% from fourth quarter 2014, reaching $1,840, a record high for Aimco.
On the Balance Sheet, at December 31, 2015, we had approximately $675 million of cash and restricted cash on-hand and credit available on our revolving credit facility. Leverage,2016, as measured by the ratio of Debt plus Preferred Equity to Adjusted EBITDA (defined under the Non-GAAP Performance and Liquidity Measures heading), was down year-over-year by 11%.
Further information about the accomplishments in each of these strategic areas of focus is includedfurther described in the sections that follow.
Property Operations
We own and operate a diversified portfolio of conventional apartment communities.communities, diversified by both geography and price point. At December 31, 2015,2016, our conventional portfolio included 140134 apartment communities with 40,46437,922 apartment homes in which we held an average ownership of approximately 98%97%. We also operate a portfolio of affordable apartment communities, which primarily consists of apartmentscommunities owned through low-income housing tax credit partnerships, and with rents that are generally paid, in whole or part, by a government agency. At December 31, 2015, our affordable portfolio consisted of 56Consolidated apartment communities with 8,685 apartment homes in whichthat we held an average ownership of approximately 95%. Ourmanage within our conventional and affordable portfolios comprise our reportable segments and generated 90% and 10%, respectively, of our proportionate property net operating income, or NOI, (defined below under the Results of Operations – Real EstateProperty Operationsheading) during the year ended December 31, 2016.

In our conventional same store portfolio, revenue and expense grew 4.7% and 1.4%, respectively, leading to 6.2% growth in property net operating income. Revenue growth was due to a weighted average rent increase of 4.0% and an average daily occupancy of 95.9%, which was consistent with 2015. We focus on customer satisfaction and resident retention, which results in lower resident turnover and reduces vacancy related costs. We receive approximately 90,000 customer satisfaction surveys annually and achieved an average rating of 4.18 (on a 1 to 5 scale) for the year ended December 31, 2016.
Our focus on efficient operations through centralization of administrative tasks, optimization of economies of scale at the corporate level and investment in more durable, longer-lived materials has helped us control operating expenses. As a result of these efforts, our conventional same store controllable operating expenses, which we define as property level operating expenses before real estate taxes, insurance and utilities, had a compound annual growth rate of 2.1% over the last three years.
For the year ended December 31, 2015,2016, our conventional portfolio provided 67%68% operating margins and 60%62% free cash flow, or FCF, margins. Free cash flow and average revenue per effective apartment home are bothFCF is defined under the Non-GAAP Performance and Liquidity Measures heading.heading below.
Redevelopment and Development
During the year ended December 31, 2015,2016, we invested approximately $118$155.4 million in redevelopment, projects, enhancing seven communities with a total$85.2 million of more than 2,500 apartment homes. Duringwhich related to the year, we completed construction on our multi-year redevelopments at Lincoln Place, located in Venice, California, and Preserve at Marin, located in Marin County, California. We also completed construction at 2900 on First, in Seattle, Washington, and Ocean House on Prospect, located in La Jolla, California. During the year, we also continued the phasedongoing redevelopment of two Center City Philadelphia, Pennsylvania communities, Park Towne Place and The Sterling.
At Park Towne Place, 2015 sawSterling, mixed-use communities located in Center City Philadelphia. We are redeveloping the near completion of the redevelopment of onethree of the four towers that comprise the community, as well as the town center. At the end of January 2016, we had leased 83% of the completed apartment homes in this tower, with rents above underwriting, and we have now completed construction of the remaining apartment homes in this tower. Based on these successful results, we approved a plan during 2015 to redevelop a second tower at Park Towne Place, with 245 apartment homes. We began de-leasing this tower during the fourth quarterone at a time, and construction is underway. We anticipate construction completion for the second tower in the fourth quarter of 2016. By the end of Januaryat December 31, 2016, we had signed leases for 55%completed lease-up of the 12,560 square feetSouth Tower and had leased 70% of commercial spacethe apartment homes in the community, at rents above underwriting.
At The Sterling, during 2015, we completed renovation of the common areas and retail space, at a costEast Tower. Rental rates are consistent with underwriting. Based on the success of the lease-up pacefirst two towers, we commenced redevelopment of the North Tower during 2016, completing de-leasing in the third quarter and pricingstarting construction in the fourth quarter. We will continue to evaluate the success of the redevelopment and may redevelop the fourth tower in the community.
We are redeveloping The Sterling, a 30-story building, two or three floors at a time, and at December 31, 2016, we had completed 88% of the apartment homes, that haveof which 92% had been completed,leased. Rental rates are in the fourth quarter 2015, we approved a plan to expand the phased redevelopment of The Sterlingline with another fiveunderwriting. Three floors, containing

20


130 apartment homes. By the end of January 2016, 62%representing 12% of the 409 apartment homes, approved for redevelopment were complete, at a cost consistent with underwriting, and we had leased 97% of the completed apartment homes, with rents above underwriting. We had also signed leases for 84% of the 19,845 37,000 square feet of retailcommercial space at rents above underwriting.remain under construction with anticipated completion in second quarter 2017.
During 2015,2016, we alsocommenced four additional redevelopments with an estimated net investment of $81.4 million. These redevelopments include: Bay Parc Plaza in Miami, Florida; Saybrook Pointe in San Jose, California; Yorktown in suburban Chicago; and the second phase of redevelopment at The Palazzo at Park La Brea in Los Angeles, California. For additional information regarding these redevelopments, please refer to the discussion under the Liquidity and Capital Resources heading below.
During 2016, we achieved NOI stabilization at three redeveloped apartment communities in California, Lincoln Place in Venice, Ocean House on Prospect in La Jolla and Preserve at Marin in Corte Madera. The redevelopment of these apartment communities resulted in value creation of approximately $170.0 million, or about 30% of our $582.0 million investment in these projects.
During 2016, we invested a total of $116$31.8 million in development, about $100 million of which was in our One Canal property in Boston. We expect completion of construction for One Canal in April 2016 and we are pre-leasing now. We also invested $16 millionprimarily in the completion of One Canal in Boston. Lease-up is nearing completion, with 86% of the apartment homes occupied at December 31, 2016, a pace well ahead of schedule and at rental rates consistent with underwriting.
During 2016, our Vivo a community we acquired in Cambridge, mid-year while under construction. We saw our first move-ins at Vivo in October and at the endMassachusetts achieved stabilized occupancy two months ahead of January 2016, the community was 48% leased at rents aboveschedule with rental rates consistent with underwriting.
See below under the Liquidity and Capital Resources – Redevelopment and Development heading for additional information regarding our ongoing redevelopment and development projectsredevelopments at December 31, 2015.2016.
Portfolio Management
AverageOur portfolio strategy seeks predictable rent growth from a portfolio of apartment communities that is diversified across “A,” “B,” and “C+” price points, averaging “B/B+” in quality, and that is diversified across the largest coastal and job growth markets in the U.S. We measure conventional apartment community quality 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 the local market average, as “B” quality apartment communities those earning rents between 90% and 125% of the local market average; as “C+” quality apartment communities those with rents greater than $1,100 per month, but lower than 90% of local market average; and as “C” quality apartment communities those with 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 the local market average rents where the portfolio is located. 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 timing for which local markets 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.
As part of our portfolio strategy, we seek to sell each year up to 10% of the apartment communities in our portfolio with lower projected free cash flow returns and invest the proceeds from such sales through property upgrades and redevelopment of communities in our current portfolio, occasional development of new communities and selective acquisition of apartment communities with projected free cash flow returns higher than expected from the communities sold. Through this disciplined approach to capital recycling, we have significantly increased the quality and expected growth rate of our portfolio as evidenced by increased average revenue per effective apartment home for our conventionalthe portfolio increased by 10%, from $1,669 forand higher average rents compared to local market average rents.
 Three Months Ended
 December 31,
 2016 2013
Percentage of Conventional Net Operating Income in target markets88% 88%
Average Revenue per Effective Apartment Home (1)$1,978
 $1,469
Portfolio Average Rents as a Percentage of Local Market Average Rents113% 105%
Percentage A (4Q 2016 Average Revenue per Effective Apartment Home $2,505)52% 38%
Percentage B (4Q 2016 Average Revenue per Effective Apartment Home $1,771)34% 37%
Percentage C+ (4Q 2016 Average Revenue per Effective Apartment Home $1,595)14% 18%
Percentage C% 7%
(1) Represents average monthly rental and other property revenues divided by the number of occupied apartment homes multiplied by our economic interest in the apartment community as of the end of the current period.
During the three months ended December 31, 2014,2016, our conventional portfolio average revenue per effective apartment home was $1,978, an increase of 34.6% as compared to $1,840 for the three months ended December 31, 2015, as a result2013. This increase was due to rent growth from the improved quality of year-over-year revenue growth of 4.5% for our conventional same store apartment communities,portfolio, driven in part by the sale of conventional apartment communities during 2015these periods with average monthly revenues per effective apartment home substantially lower than those of the apartment communities in our retained portfolio, and thealso by our reinvestment of the sales proceeds through redevelopment, development and acquisition of apartment communities with higher rents and better prospects and higher rents.free cash flow return prospects.
In total, we sold 11 apartment communities with 3,855 apartment homes during the year ended December 31, 2015. These sales represented roughly 4%After several years of our beginning of year real estate asset value. Eight of these communities were from our conventional portfolio, with average monthly revenues per apartment home of $1,043, 43% below the average of our retained conventional portfolio. Among the properties sold, was the last one we held in Phoenix. We also continued the sell-down of our affordable portfolio with the sale of three communities.
Consistent with our paired-trade discipline, proceeds from these sales were reinvested in redevelopment and development projects described above, acquisitions, and property upgrades with a weighted average Free Cash Flow internal rate of return (defined under the Non-GAAP Performance and Liquidity Measures heading) approximately 350 basis points higher than the communities sold to fund them.
In addition to our acquisition of the under construction community, Vivo, which is described under the Redevelopment and Development heading above, during 2015, we purchased two other communities: Mezzo, an operating community in Atlanta; and Axiom, a lease-up community in Cambridge. Our total purchase price for these three communities was $129 million.
At the end of January 2016, Axiom was 89% leased at rents above underwriting. We expect to reach occupancy stabilization on this community during the second quarter of 2016.
In addition to the acquisitions of these three communities, during the year we entered into a contract to acquire an apartment community currently under construction in Northern California for $320 million.  The acquisition is expected to close upon completion of construction in the summer of 2016. We intend to fund the acquisition through a ten-year property loan, with the balance funded primarily by proceeds from the sale of two apartment communities: one in Alexandra, Virginia; and our last community in Phoenix, which sale closed in December 2015.
Through our disciplined execution of our portfolio management strategy, over the three year period from December 31, 2012 to December 31, 2015, we:
increased our period-end conventional portfolio average revenue per apartment home by 35% to $1,840. This rate of growth reflects the impact of marketabove-trend rent growth, and more significantly, the impact of portfolio management through dispositions, redevelopment and acquisitions;
increased our conventional portfolio Free Cash Flow margin by 9% through the sale of lower-rated communities and reinvestmentwe are seeing rent growth in communities of greater quality commanding higher rents; and
increasedmany markets decelerate due to 91% the percentage of our conventional property net operating income earned in our target markets.
competitive new supply. As a result of these efforts, asour diversification by both geography and price point, our exposure to competitive new supply is largely limited to approximately one quarter of September 30, 2015, the most recent period for which market information is available, approximately 51%, 32% and 17% of Aimco's portfolio is invested in “A,” “B” and “C+” quality apartment homes, respectively, as measured under our portfolio, quality rating system discussedrepresented by “A” price point communities in submarkets with more than 2% supply growth projected over the Portfolio Management headingnext year. This exposure is mitigated in Item 1.some submarkets where the rate of job growth exceeds the rate of supply growth, and in other submarkets where our “A” rents are substantially lower than the rents charged by new supply.
As we continue to execute our portfolio strategy, we expect to continue to increase conventional portfolio average revenue per apartment home at a rate greater than market rent growth; to increase further Free Cash FlowFCF margins; to sell our lower rated

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apartment communities; and to increase to 95% or more the percentage of our conventional property net operating income earned in our target markets.
During the year ended December 31, 2016, we sold seven conventional apartment communities with 3,045 apartment homes for gross proceeds of $517.0 million. After payment of transaction costs, working capital adjustments and distributions to noncontrolling interests, our share of the net proceeds totaled $509.1 million. We sold one apartment community from our low-income housing tax credit portfolio for gross proceeds of $27.5 million. After repayment of property debt, payment of transaction costs and distributions to noncontrolling interests, our share of the net proceeds totaled $10.3 million. We invested these proceeds in redevelopment and development discussed below, as well as the acquisition for $320 million of Indigo, a 463-home apartment community in Redwood City, California that was in the final stages of construction at the time of acquisition. As of December 31, 2016, leasing was well ahead of schedule, with 77% of apartment homes occupied at rental rates consistent with underwriting.
Balance Sheet and Liquidity
Our leverage strategy seeks to increase financial returns while using leverage with appropriate caution. We target the ratio of Proportionate Debt plusand Preferred Equity to Adjusted EBITDA to be below 7.0x and we target the ratio of Adjusted EBITDA Coverage ofto Adjusted Interest Expense and Preferred Dividends to be greater than 2.5x. We also focus on the ratios of Proportionate Debt to Adjusted EBITDA and Adjusted EBITDA Coverage of Interest.to Adjusted Interest Expense. Proportionate Debt, Adjusted EBITDA and Adjusted Interest Expense, as used in these ratios, are non-GAAP financial measures, which are further discusseddefined and reconciled under the Non-GAAP Performance and Liquidity Measures - Leverage Ratios heading.heading below. Preferred Equity represents Aimco'sAimco’s preferred stock and the Aimco Operating Partnership's

Partnership’s preferred OP units.
Our leverage ratios for the trailing twelve month periods ended December 31, 20152016 and 2014,2015, are presented below:
 Trailing Twelve Months Ended December 31, Pro-forma Trailing Twelve Months Ended December 31,
 2015 2014 2014 (1)
Proportionate Debt to Adjusted EBITDA6.4x 7.1x 6.5x
Proportionate Debt plus Preferred Equity to Adjusted EBITDA6.8x 7.6x 7.0x
Adjusted EBITDA to Adjusted Interest3.1x 2.7x 2.9x
Adjusted EBITDA to Adjusted Interest and Preferred Dividends2.8x 2.5x 2.7x
 Trailing Twelve Months Ended December 31,
 2016 2015
Proportionate Debt to Adjusted EBITDA6.3x 6.4x
Proportionate Debt and Preferred Equity to Adjusted EBITDA6.7x 6.8x
Adjusted EBITDA to Adjusted Interest Expense3.2x 3.1x
Adjusted EBITDA to Adjusted Interest Expense and Preferred Dividends2.9x 2.8x
(1)During January 2015, Aimco completed a Common Stock offering resulting in net proceeds of approximately $367 million. The pro-forma ratios presented for the trailing twelve months ended December 31, 2014, have been adjusted to reflect the following: a) Repayment of $112.3 million of outstanding borrowings under our Credit Agreement at December 31, 2014; b) Repayment of $102.2 million of property debt; c) Redemption of $27.0 million of Aimco’s CRA Preferred Stock; and d) Investment of the remaining proceeds from the common offering. Refer to Note 9 to the consolidated financial statements in Item 8 for additional information regarding this stock offering.
We expect future leverage reduction from both earnings growth, especially as apartment communities now being redeveloped or developed are completed and leased,the lease-up of Indigo is completed, and from regularly scheduled property debt amortization repaidfunded from operating cash flows.retained earnings. As of December 31, 2015,2016, we had anheld unencumbered pool that included 25 consolidated apartment communities and hadwith an estimated fair value of approximately $1.8$1.6 billion.
Two credit rating agencies rate our creditworthiness, using different methodologies and ratios for assessing our credit. In 2015, both of these agencies upgraded our credit rating and outlook to BBB- (stable), an investment grade rating. In addition to lowering the cost of borrowings under our line of credit, an improvement to an investment grade rating may lower the cost of any future preferred equity issuance, provide additional flexibility for sources of capital, and provide other intangible benefits. 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. While an investment grade rating provides for ready access
During 2016, we closed fixed-rate, non-recourse, amortizing, property loans totaling $393.5 million with a weighted average term of 9.4 years and weighted average interest rate of 3.2%, which were on average 145 basis points over the corresponding Treasury rates at the time of pricing. During 2016, we also amended our $600.0 million revolving credit facility, extending its maturity to January 2022. For additional information regarding our leverage, please see the issuance of corporate debt, we do not anticipate doing so.
At December 31, 2015, we had $675 million of cashdiscussion under the Liquidity and restricted cash on hand and credit available on our Senior Secured Credit Agreement.Capital Resources heading.
Culture
Our culture is the key to our success. Our emphasis on a collaborative, respectful, and performance-oriented culture is what enables the continuing transformation of the Aimco business. In 2015,2016, Aimco was recognized by the Denver Post as a Top Work Place for the thirdfourth consecutive year. We were one of only three mid-size companies to be named a Top Work Place in Colorado for the past four consecutive years.
Key Financial Indicators
KeyThe key financial indicators that we use in managing our business and in evaluating our financial condition and operating performance include:are Economic Income, Net Asset Valueour measure of total return, and Adjusted Funds From Operations.Operations, our measure of current return. In addition to these indicators, we also use Pro forma Funds From Operations; Free Cash Flow, Free Cash Flow internal rate of return, Free Cash Flow capitalization rate, net operating income, or NOI, capitalization rate, same store property operating results, proportionate property net operating income, average revenue per effective apartment home, financial coverage ratios, and leverage as shown on our balance sheet to evaluate our operating performance and financial condition. Mostcondition using: Pro forma Funds From Operations; FCF capitalization rate; NOI capitalization rate; same store property operating results; proportionate property NOI; average revenue per effective apartment home; financial coverage ratios; and net leverage. Certain of these financial indicators are non-GAAP financial measures, which are defined, further described and, for certain of the measures, reconciled to comparable GAAP-based measures, under the Non-GAAP Performance and Liquidity Measures heading.heading below.

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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.

Overview
20152016 compared to 2015
Net income attributable to Aimco and net income attributable to the Aimco Operating Partnership increased by $181.7 million and $190.8 million, respectively, for the year ended December 31, 2016, as compared to the year ended December 31, 2015. The increase in income was principally due to an increase in gains on dispositions of real estate, partially offset by an increase in depreciation and amortization resulting from redeveloped and developed apartment communities placed into service during 2016 and from recent acquisitions.

2015 compared to 2014
Net income attributable to Aimco and net income attributable to the Aimco Operating Partnership decreased by $60.5 million and $64.3 million, respectively, duringfor the year ended December 31, 2015, as compared to the year ended December 31, 2014. The decrease in income was principally due to a decrease in gains on dispositions of real estate, partially offset by the effect of various other items further discussed below.

2014 compared to2013
Net income attributable to Aimco and net income attributable to the Aimco Operating Partnership increased by $102.0 million and $106.2 million, respectively, during the year ended December 31, 2014, as compared to the year ended December 31, 2013. The increase in income was principally due to an increase in gains on dispositions and a decrease in interest expense.
The following paragraphs discuss these and other items affecting the results of operations of Aimco and the Aimco Operating Partnership in more detail.
Property Operations
As described under the preceding Executive Overview heading, our owned real estate portfolio consists primarily of conventional apartment communities, and wecommunities. We also operate a portfolio of affordable apartment communities.communities, the majority of which are held in low-income housing tax credit partnerships. Our conventional and affordable real estate operations that we manage and that are not classified as held for sale at the end of the current period comprise our reportable segments.
Due to the diversityrange of our economic ownership interests in our apartment communities, our chief executive officer, who is our chief operating decision maker, useswe use proportionate property net operating incomeNOI to assess the operating performance of our apartment communities.communities and our operating segments. Proportionate property net operating incomeNOI reflects our share of rental and other property revenues lessreduced by direct property operating expenses, including real estate taxes, for the consolidated and unconsolidated apartment communities that we own and manage. Accordingly, the results of operations of our conventional and affordable segments discussed below are presented on a proportionate basis and exclude the results of four conventional apartment communities with 142 apartment homes and nineeight affordable apartment communities with 779727 apartment homes that we do not manage.manage and one affordable community with 52 apartment homes that was classified as held for sale as of December 31, 2016.
We do not include property management revenues, offsite costs associated with property management or casualty-related amounts, in our assessment of segment performance. Accordingly, these items are not allocated to our segment results discussed below. Refer to Note 1512 in the consolidated financial statements in Item 8 for further discussion regarding our reportable segments, including a reconciliation of these proportionate amounts to consolidated rental and other property revenues and property operating expenses.
Conventional Real Estate Operations
Our conventionalConventional segment consists of apartment communities we classify as Conventional Same Store and Conventional Redevelopment and Development, Conventional Acquisition and Other Conventional apartment communities.Non-Same Store. Conventional Same Store apartment communities are those we manage, that have reached stabilized occupancy as of the beginning of a two year comparable period and maintained a stabilized occupancy (greater than 90%) duringit throughout the current year and comparable prior year, periods, and that are not expected to be sold within 12 months. Conventional RedevelopmentNon-Same Store consists of conventional redevelopment and Developmentdevelopment apartment communities, which are those in which a substantial number of available apartment homescurrently under construction that are not occupancy stabilized and those that have been vacatedcompleted in recent years that had not achieved and maintained stabilized occupancy for major renovations or have not been stabilized in occupancy duringboth the current year orand comparable prior year, periods, due to ongoing or completed renovations, such as exteriors, common areas orand conventional acquisition apartment home improvements, as well as those being constructed from the ground up. Conventional Acquisition apartment communities, which are those we have acquired since January 1, 2014. Otherthe beginning of a two year comparable period. Conventional Non-Same Store also includes apartment communities includes conventional apartment communitiessubject to agreements that have significant rent control restrictions;limit the amount by which we may increase rents; apartment communities that had not reached andor maintained a stabilized level of occupancy duringas of the currentbeginning of a two year or prior year periods,comparable period, often due to a casualty event; the operations of properties that are not multifamily, such as fitness centers; and those

23


apartment communities we expectexpected to sell in the nextbe sold within 12 months but that havedo not yet metmeet the criteria to be classified as held for sale.
As of December 31, 2015,2016, as defined by our segment performance metrics, our conventional portfolio consisted of the following:
107101 Conventional Same Store apartment communities with 33,14930,893 apartment homes; and
nine29 Conventional Redevelopment and DevelopmentNon-Same Store apartment communities with 3,3016,887 apartment homes;homes.
eight Conventional Acquisition apartment communities with 1,391 apartment homes; and
11 Other Conventional apartment communities with 2,385 apartment homes.
From December 31, 2014,2015, to December 31, 2015,2016, on a net basis, our Conventional Same Store portfolio increaseddecreased by foursix apartment communities and decreased by 3,5712,256 apartment homes. This change consisted of:
twofive conventional redevelopment apartment communities with 831,544 apartment homes that were reclassified from ourinto Conventional Acquisition portfolio after being owned by Aimco for both periods;Non-Same Store;
one apartment community with 488246 apartment homes that was reclassified from our Otherinto Conventional portfolio upon maintaining stabilized occupancy following increased vacancy associated with the terminationNon-Same Store as a result of corporate housing leases;a casualty event; and
eight New Yorkfive apartment communities with 2301,727 apartment homes sold during the period.
These decreases were offset by the addition of five apartment communities that were reclassified from Conventional Non-Same Store, including three acquisition communities with 818 apartment homes as we have now owned them for the entirety of both periods presented, and two redeveloped apartment communities with 443 apartment homes that were reclassified from our Other Conventional portfolio upon determination thatmaintaining stabilized occupancy for the prospective rental rates for these communities are expected to be more comparable to market rental rate growth in that market, independententirety of government regulation.both periods presented.
These increases were offset by the removal of six apartment communities with 3,150 apartment homes that were sold during the period and one apartment community with 1,222 apartment homes that is expected to be sold within 12 months, but does not yet meet the criteria to be classified as held for sale in accordance with GAAP.
Our proportionate conventional portfolio results for the years ended December 31, 2016 and December 31, 2015, and 2014, as presented below, are based on the apartment community populationsclassifications as of December 31, 2015.2016.
Year Ended December 31,Year Ended December 31,
(in thousands)2015 2014 $ Change % Change2016 2015 $ Change % Change
Rental and other property revenues:              
Conventional Same Store$646,693
 $618,990
 $27,703
 4.5%$635,472
 $606,952
 $28,520
 4.7%
Conventional Redevelopment and Development69,186
 51,452
 17,734
 34.5%
Conventional Acquisition27,003
 4,555
 22,448
 492.8%
Other Conventional55,439
 54,660
 779
 1.4%
Conventional Non-Same Store168,863
 145,189
 23,674
 16.3%
Total798,321
 729,657
 68,664
 9.4%804,335
 752,141
 52,194
 6.9%
Property operating expenses:              
Conventional Same Store203,603
 199,463
 4,140
 2.1%192,280
 189,658
 2,622
 1.4%
Conventional Redevelopment and Development24,943
 20,579
 4,364
 21.2%
Conventional Acquisition10,759
 1,692
 9,067
 535.9%
Other Conventional24,268
 23,530
 738
 3.1%
Conventional Non-Same Store65,659
 56,899
 8,760
 15.4%
Total263,573
 245,264
 18,309
 7.5%257,939
 246,557
 11,382
 4.6%
Property net operating income:              
Conventional Same Store443,090
 419,527
 23,563
 5.6%443,192
 417,294
 25,898
 6.2%
Conventional Redevelopment and Development44,243
 30,873
 13,370
 43.3%
Conventional Acquisition16,244
 2,863
 13,381
 467.4%
Other Conventional31,171
 31,130
 41
 0.1%
Conventional Non-Same Store103,204
 88,290
 14,914
 16.9%
Total$534,748
 $484,393
 $50,355
 10.4%$546,396
 $505,584
 $40,812
 8.1%
For the year ended December 31, 2015,2016, as compared to 2014,2015, our conventional segment’s proportionate property net operating incomeNOI increased $50.4$40.8 million, or 10.4%8.1%.
For the year ended December 31, 2015,2016, as compared to 2014,2015, Conventional Same Store proportionate property net operating incomeNOI increased by $23.6$25.9 million, or 5.6%6.2%. This increase was primarily attributable to a $27.7$28.5 million, or 4.5%4.7%, increase in rental

24


and other property revenues due to higher average revenues (approximately $75$82 per effective home), comprised primarily of increases in rental rates of 4.0%. Rental rates on new leases transacted during the year ended December 31, 2016, were 2.4% higher than expiring lease rates, and renewal rates were 5.7% higher than expiring lease rates. The increase in Conventional Same Store rental and other property revenues was partially offset by a $2.6 million, or 1.4%, increase in property operating expenses, primarily due to increases in real estate taxes, personnel costs and repairs and maintenance, partially offset by lower utilities expenses and insurance costs. During the year ended December 31, 2016, as compared to 2015, controllable operating expenses, which exclude utility costs, real estate taxes and insurance, increased by $1.6 million, or 1.9%.
Our Conventional Non-Same Store proportionate property NOI increased by $14.9 million during the year ended December 31, 2016, as compared to 2015. This increase is attributable to the following:
$7.8 million increase due to the NOI stabilization of three redeveloped communities (Lincoln Place, Ocean House on Prospect and Preserve at Marin);
$2.6 million due to completing lease-up of Vivo and nearing completion of the lease-up of Indigo and One Canal;
$3.4 million due to apartment communities we acquired during 2015; and
$1.1 million due to other net increases in proportionate property NOI including the continued lease-up of redeveloped homes at Park Towne Place and The Sterling, offset by decreases due to apartment homes taken out of service for our current redevelopments.

As of December 31, 2015, our conventional portfolio consisted of the following:
102 Conventional Same Store apartment communities with 31,422 apartment homes; and
27 Conventional Non-Same Store apartment communities with 5,855 apartment homes.
Our proportionate conventional portfolio results for the years ended December 31, 2015 and 2014, as presented below, are based on the apartment community classifications as of December 31, 2015 (excluding amounts related to apartment communities sold or classified as held for sale during 2016).
 Year Ended December 31,
(in thousands)2015 2014 $ Change % Change
Rental and other property revenues:       
Conventional Same Store$622,031
 $594,501
 $27,530
 4.6%
Conventional Non-Same Store130,110
 89,290
 40,820
 45.7%
Total752,141
 683,791
 68,350
 10.0%
Property operating expenses:       
Conventional Same Store194,283
 190,517
 3,766
 2.0%
Conventional Non-Same Store52,274
 37,868
 14,406
 38.0%
Total246,557
 228,385
 18,172
 8.0%
Property net operating income:       
Conventional Same Store427,748
 403,984
 23,764
 5.9%
Conventional Non-Same Store77,836
 51,422
 26,414
 51.4%
Total$505,584
 $455,406
 $50,178
 11.0%
For the year ended December 31, 2015, as compared to 2014, our conventional segment’s proportionate property NOI increased $50.2 million, or 11.0%.
For the year ended December 31, 2015, as compared to 2014, Conventional Same Store proportionate property NOI increased by $23.8 million, or 5.9%. This increase was primarily attributable to a $27.5 million, or 4.6%, increase in rental and other property revenues due to higher average revenues (approximately $78 per effective home), comprised of increases in rental rates, utility reimbursements and other fees, including parking. Rental rates on new leases transacted during the year ended December 31, 2015,, were 4.4% higher than expiring lease rates, and renewal rates were 5.5% higher than expiring lease rates. The increase in Conventional Same Store rental and other property revenues was partially offset by a $4.1$3.8 million, or 2.1%2.0%, increase in property operating expenses, primarily due to increases in real estate taxes and repairs and maintenance. During the year ended December 31, 2015, as compared to 2014, controllable operating expenses, which exclude utility costs, real estate taxes and insurance, increased by $2.2$2.0 million, or 2.4%2.3%.
Our Conventional Redevelopment and DevelopmentNon-Same Store proportionate property net operating incomeNOI increased by $13.4$26.4 million during theyear ended December 31, 2015,, as compared to 2014, primarily. Proportionate property NOI increased $13.1 million due to increases apartment communities that we acquired in net operating income associated with2015 and 2014. Proportionate property NOI increased $13.3 million due to higher revenues per occupiedapartment home and higher average daily occupancy associated with apartment homes placed into service following completion of construction activities. During 2015, as compared to 2014, average daily occupancy associated with ouractivities at Lincoln Place, The Preserve at Marin and Pacific Bay Vistas, redevelopment communities increased by 440 basis points, 560 basis points and 200 basis points, to 90%, 79% and 95%, respectively. Additionally, these communities generated significant increases in average revenue per apartment home as construction on these projects was completed. These communities contributed an increase in property net operating income of $16.9 million from 2014 to 2015. This increase in property net operating income contribution was partially offset by a reduction in revenue associated with approximately 375 apartment homes taken out of service at our Park Towne Place and The Sterling redevelopments.redevelopments during 2015.
Our Conventional Acquisition proportionate property net operating income increased by $13.4 million during the year ended December 31, 2015, as compared to 2014, due to apartment communities we acquired during 2015 and 2014.
As of December 31, 2014, our conventional portfolio consisted of the following:
98 Conventional Same Store apartment communities with 34,058 apartment homes;
seven Conventional Redevelopment apartment communities with 2,891 apartment homes;
eight Conventional Acquisition apartment communities with 1,256 apartment homes; and
18 Other Conventional apartment communities with 1,353 apartment homes.
Our conventional portfolio results for the years ended December 31, 2014 and 2013, as presented below, are based on the apartment community populations as of December 31, 2014 (excluding amounts related to apartment communities sold or classified as held for sale during 2015).
 Year Ended December 31,
(in thousands)2014 2013 $ Change % Change
Rental and other property revenues:       
Conventional Same Store$630,175
 $603,654
 $26,521
 4.4%
Conventional Redevelopment51,452
 35,768
 15,684
 43.8%
Conventional Acquisition7,300
 992
 6,308
 635.9%
Other Conventional40,730
 39,008
 1,722
 4.4%
Total729,657
 679,422
 50,235
 7.4%
Property operating expenses:       
Conventional Same Store202,814
 198,161
 4,653
 2.3%
Conventional Redevelopment20,579
 16,479
 4,100
 24.9%
Conventional Acquisition3,156
 573
 2,583
 450.8%
Other Conventional18,715
 17,970
 745
 4.1%
Total245,264
 233,183
 12,081
 5.2%
Property net operating income:       
Conventional Same Store427,361
 405,493
 21,868
 5.4%
Conventional Redevelopment30,873
 19,289
 11,584
 60.1%
Conventional Acquisition4,144
 419
 3,725
 889.0%
Other Conventional22,015
 21,038
 977
 4.6%
Total$484,393
 $446,239
 $38,154
 8.6%

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For the year ended December 31, 2014, as compared to 2013, our conventional segment’s proportionate property net operating income increased $38.2 million, or 8.6%.
For the year ended December 31, 2014, as compared to 2013, Conventional Same Store proportionate property net operating income increased by $21.9 million, or 5.4%. This increase was primarily attributable to a $26.5 million, or 4.4%, increase in rental and other property revenues due to higher average revenues (approximately $65 per effective home), comprised of increases in rental rates, utility reimbursements, and other fees including parking, and a 20 basis point increase in average daily occupancy. Rental rates on new leases transacted during the year ended December 31, 2014, were 3.7% higher than expiring lease rates, and renewal rates were 5.2% higher than expiring lease rates. The increase in Conventional Same Store rental and other property revenues was partially offset by a $4.7 million, or 2.3%, increase in property operating expenses, primarily due to an increase in utilities and real estate taxes, partially offset by a decrease in insurance costs. During the year ended December 31, 2014, as compared to 2013, controllable operating expenses, which exclude utility costs, real estate taxes and insurance, increased by $0.5 million or 0.5%.
Our Conventional Redevelopment proportionate property net operating income increased by $11.6 million during the year ended December 31, 2014, as compared to 2013, primarily due to increases in net operating income associated with apartment homes placed into service following completion of construction activities. FromDecember 31, 2013 to December 31, 2014, we placed an additional 632, 308 and 72 apartment homes into service at our Lincoln Place, Pacific Bay Vistas and The Preserve at Marin redevelopment communities, respectively.
Our Conventional Acquisition proportionate property net operating income increased by $3.7 million during the year ended December 31, 2014, as compared to 2013, due to apartment communities we acquired in 2014 and the latter part of 2013.
Our Other Conventional proportionate property net operating income increased by $1.0 million, or 4.6%, during the year ended December 31, 2014, as compared to 2013, primarily due to recovery of previously recognized bad debts related to one of our apartment communities in New York City.
Affordable Real Estate Operations
Our affordable segmentportfolio consists primarily of apartment communities we classify as Affordable Same Store or Other Affordable. Affordable Same Store apartment communities are thosethat we manage that are subject toowned through low-income housing tax credit agreements and that have reached and maintained a stabilized occupancy (greater than 90%) during the current year and prior year-to-date periods. Other Affordable apartment communities are those that do not meet the Affordable Same Store apartment community definition because they have not maintained a stabilized level of occupancy, often due to a casualty event, we do not manage them, or they are not subject to tax credit agreements.
partnerships. At December 31, 2016 and 2015, as defined by our segment performance metrics, our affordable portfolio consisted of 45 Affordable Same Store46 apartment communities with 7,3117,610 apartment homes and two Other Affordablehomes.
For the year ended December 31, 2016, as compared to 2015, our affordable portfolio’s proportionate property NOI increased $6.1 million, or 10.9%. The increase was primarily attributed to an increase in rental income driven by higher rental rates, including market rate increases on four apartment communities with 595 apartment homes.that were approved in 2016 by the Department of Housing and Urban Development, partially offset by higher personnel and repairs and maintenance costs.
From December 31, 2014, to December 31, 2015, on a net basis, our Affordable Same Store portfolio increased by one apartment community with 200 apartment homes that was reclassified to our Affordable Same Store portfolio upon maintaining a stabilized level of occupancy following a casualty event.

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Our affordable results for the years ended December 31, 2015 and 2014, presented below are based on the apartment community populations at December 31, 2015.
 Year Ended December 31,
(in thousands)2015 2014 $ Change % Change
Rental and other property revenues:       
Affordable Same Store$88,376
 $86,441
 $1,935
 2.2 %
Other Affordable8,173
 8,060
 113
 1.4 %
Total96,549
 94,501
 2,048
 2.2 %
Property operating expenses:       
Affordable Same Store35,063
 35,089
 (26) (0.1)%
Other Affordable3,421
 3,318
 103
 3.1 %
Total38,484
 38,407
 77
 0.2 %
Property net operating income:       
Affordable Same Store53,313
 51,352
 1,961
 3.8 %
Other Affordable4,752
 4,742
 10
 0.2 %
Total$58,065
 $56,094
 $1,971
 3.5 %
For the year ended December 31, 2015,, as compared to 2014,, the proportionate property NOI of our affordable segment’s proportionate property net operating incomeapartment communities increased $2.0$1.6 million, or 3.5%2.9%. The increase was attributable to a $2.0 millionan increase in rental income driven primarily by higher rental rates of $22$23 per month on apartment homes.
At December 31, 2014, our affordable portfolio consisted of 44 Affordable Same Store apartment communities with 7,111 apartment homes and three Other Affordable apartment communities and 795 apartment homes.
Our affordable results for the years ended December 31, 2014 and 2013 presented below are based on the apartment community populations at December 31, 2014 (excluding amounts related to apartment communities sold or classified as held for sale during 2015).
 Year Ended December 31,
(in thousands)2014 2013 $ Change % Change
Rental and other property revenues:       
Affordable Same Store$84,816
 $83,332
 $1,484
 1.8 %
Other Affordable9,685
 9,701
 (16) (0.2)%
Total94,501
 93,033
 1,468
 1.6 %
Property operating expenses:       
Affordable Same Store34,182
 33,176
 1,006
 3.0 %
Other Affordable4,225
 4,257
 (32) (0.8)%
Total38,407
 37,433
 974
 2.6 %
Property net operating income:       
Affordable Same Store50,634
 50,156
 478
 1.0 %
Other Affordable5,460
 5,444
 16
 0.3 %
Total$56,094
 $55,600
 $494
 0.9 %
For the year ended December 31, 2014, as compared to 2013, the proportionate property net operating income of our affordable apartment communities increased $0.5 million, or 0.9%. The increase in proportionate property net operating income was primarily attributable to an increase in rental income driven by higher rental rates, partially offset by an increase in utilities expense.
Non-Segment Real Estate Operations
Real estate operations net operating incomeNOI amounts not attributed to our conventional or affordable segments include property management revenues, offsite costs associated with property management and casualty losses, reported in consolidated amounts, which we do not allocate to our conventional or affordable segments for purposes of evaluating segment performance (see Note 1512 to the consolidated financial statements in Item 8). We also exclude the results of apartment communities sold and classified as held for sale from our conventional or affordable segments for purposes of evaluating segment performance.

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For the years ended December 31, 2015, 2014 and 2013, property management expenses, which include offsite costs associated with managing apartment communities we own (both our share and the share that we allocate to the limited partners in our consolidated partnerships), totaled $24.7 million, $25.3 million and $30.7 million, respectively. The decrease in property management expenses in these periods was primarily due to reductions in personnel and related costs based on the reduction in the number of apartment communities we own and manage.
For the years ended December 31, 2016, 2015 2014and 2013,2014, casualty losses totaled $5.8 million, $8.3 million and $11.8 million, respectively. Casualty losses during the year ended December 31, 2016, included claims related to fire damage, water damage resulting from a storm affecting several communities, and $6.7 million, respectively.water damage resulting from damaged pipes at several other communities. Casualty losses during the year ended December 31, 2015, included losses resulting from property damage and snow removal costs associated with the severe snow storms in the Northeast. Casualty losses during the year ended December 31, 2014, included losses from the severe weather associated with the 2014 “Polar Vortex,” which affected many of our apartment communities in the Northeast and Midwest, as well as damage to one of our apartment communities resulting from a severe hail storm.
Tax Credit and Asset Management Revenues
We sponsor certain consolidated partnerships that acquire, develop and operate qualifying affordable housing apartment communities and are structured to provide for the pass-through of tax credits and deductions to their partners. We recognize income associated with the delivery of tax credits and benefits associated withdeductions generated by these partnerships to their partners.
For the year ended December 31, 2016, as compared to the year ended December 31, 2015, tax credit and asset management revenues decreased $3.0 million. This decrease was primarily attributable to $6.6 million lower amortization of deferred tax credit income primarily due to delivery of substantially all of the tax credits on various apartment communities in prior periods, partially offset by a $3.6 million fee earned for assisting a third-party property owner in a mark-up-to-market renewal related to a property we previously owned.
For the year ended December 31, 2015, as compared to the year ended December 31, 2014, tax credit and asset management revenues decreased $7.2 million. This decrease was attributable to a decrease in amortization of deferred tax credit income primarily due to delivery of substantially all of the tax credits on various apartment communities during 2014 and 2015, and a decrease in disposition and other transactional fees earned in 2015 as compared to 2014.
For the year ended December 31, 2014, as compared to the year ended December 31, 2013, tax credit and asset management revenues decreased $3.3 million. This decrease was attributable to a decrease in amortization of tax credit income, and a decrease in disposition and other transactional fees earned in 2014, as compared to 2013.
Certain of the apartment communities within our tax credit partnerships have delivered substantially all of the tax credits, or are anticipated to deliver substantially all of the tax credits during 2016.2017. As the tax credit delivery and compliance periods for these apartment communities expire, amortization of deferred income associated with the delivery of tax credits and benefits decreases.deductions will decrease. Additionally, during the year ended December 31, 2016, we acquired an investor limited partner’s interest in one of the tax credit partnerships prior to the end of the tax credit delivery period and as such we are no longer obligated to deliver tax credits. We expect amortization of deferred tax credit income to decrease from $24.1$17.6 million in the year ended December 31, 2015,2016, to approximately $19$11 million for the year ending December 31, 2016.2017.
Investment Management Expenses
For the year ended December 31, 2016, compared to the year ended December 31, 2015, investment management expenses decreased $1.5 million primarily due to lower acquisition-related costs.
For the year ended December 31, 2015, compared to the year ended December 31, 2014, investment management expenses decreased $1.5 million primarily due to decreasesincreases in acquisition and other costs, partially offset by an increase in personnel and related costs.
For the year ended December 31, 2014, compared to the year ended December 31, 2013, investment management expenses increased $3.0 million primarily due to increases in acquisition and other costs, partially offset by a decrease in personnel and related costs.
Depreciation and Amortization
During the years ended December 31, 2016, 2015 2014 and 2013,2014, depreciation and amortization totaled $333.1 million, $306.3 million and $282.6 million, respectively. The $26.8 million increase from 2015 to 2016 was primarily due to amounts placed in service as we completed apartment homes in our Park Towne Place and $291.9 million, respectively.The Sterling redevelopments, the completion of our One Canal and Vivo developments, our acquisition of Indigo and other capital additions, partially offset by decreases associated with apartment communities sold. The $23.7 million increase from 2014 to 2015 was primarily due to assetsapartment homes placed into service as we completed our redevelopments and apartment homes in our redevelopment projects, and assetscommunities we acquired in 2014 and 2015, partially offset by decreases associated with apartment communities sold. The $9.3 million decrease from 2013 to 2014 was primarily due to assets that became fully depreciated and apartment community sales, partially offset by an increase associated with our redevelopment apartment communities as completed apartment homes were placed into service.
Provision for Real Estate Impairment Losses
Based on periodic tests of recoverability of long-lived assets, during the year ended December 31, 2014, we recognized a $1.8 million provision for real estate impairment loss related to an asset that was sold during the year ended December 31, 2014. The impairment loss was driven by inclusion of estimated costs to sell, inclusive of a debt prepayment penalty, in the impairment calculation when the property became held for sale.

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General and Administrative Expenses
In recent years, we have worked toward simplifying our business, including winding down the portion of our business that generates transaction-based activity fees and reducing the number of partnerships that own our conventional apartment communities by acquiring the noncontrolling interests in these partnerships, which allowed us to reduce overhead and other costs associated with these activities. These and other simplification activities, along with our scale reductions, have allowed us to reduce our offsite costs, which consist of general and administrative expenses, as well as property management and investment management expenses, by $23.4$6.5 million, or 24%8.1%, over the last three years.
For the year ended December 31, 2016, compared to the year ended December 31, 2015,, general and administrative expenses, excluding incentive compensation, decreased by approximately $0.2 million. Inclusive of incentive compensation, general and administrative expense increased $1.8 million, primarily due to higher incentive compensation based on our performance against key performance indicators in 2016 as compared to 2015.
For the year ended December 31, 2015, compared to the year ended December 31, 2014,, general and administrative expenses decreased $0.9 million, or 2.1%, primarily due to reductions in personnel and related costs, partially offset by an increase in administrative costs, including travel and consulting costs.
For the year ended December 31, 2014, compared to the year ended December 31, 2013, general and administrative expenses decreased $1.6 million, or 3.5%, primarily due to reductions in personnel and related costs.
Other Expenses, Net
Other expenses, net includes franchise taxes, costs associated with our risk management activities, partnership administration expenses and certain non-recurring items.
For the year ended December 31, 2016, compared to the year ended December 31, 2015, other expenses, net increased by $3.9 million. The increase was primarily due an increased estimate for future environmental costs, which is further discussed in Note 5 to the consolidated financial statements in Item 8, partially offset by lower legal and related costs.
For the year ended December 31, 2015, compared to the year ended December 31, 2014, other expenses, net decreased by $2.2$4.0 million. The decrease was primarilydue to a $1.8 million provision for real estate impairment loss we recognized during the year ended December 31, 2014, related to the estimated costs to sell an apartment community, inclusive of prepayment penalties. The decrease was also due to lower legal and other costs as well as the favorable resolution of certain legal matters in 2015, partially offset by higher environmental costs associated with an apartment community we no longer own.
For the year ended December 31, 2014, compared to the year ended December 31, 2013, other expenses, net increased by $5.1 million. The net increase was primarily due to an increase in legal and other costs and due to certain nonrecurring recoveries recognized during 2013.
Interest Income
Interest income consists primarily of interest on notes receivable, accretion of discounts on certain notes receivable, interest on cash and restricted cash accounts and interest on investments in debt securities of a securitization that holds certain of our property debt, which investments are classified within other assets in our consolidated balance sheets.
For the year ended December 31, 2015, as compared to the year ended December 31, 2014, interest income increased by less than $0.1 million.
For the year ended December 31, 2014, as compared to the year ended December 31, 2013, interest income decreased by $11.1 million. Interest income decreased by $4.5 million due to accretion income recognized in 2013 related to an apartment community sale for which the net proceeds available for repayment of partnership loans exceeded the amounts previously anticipated. Interest income also decreased by $4.7 million due to interest on certain property loans we purchased in 2013 and held for approximately six months prior to their repayment.
Interest Expense
For the year ended December 31, 2016, compared to the year ended December 31, 2015,, compared to the year ended December 31, 2014, interest expense, which includes the amortization of deferred financing costs and prepayment penalties incurred in financing activities, decreased by $3.3 million, or 1.7%. The decrease was primarily attributed to lower average outstanding balances from our repayment of non-recourse property debt and to a lesser extent from a lower average cost of debt on property loans refinanced during the year, resulting in an $8.1 million reduction in interest expense, and a $4.9 million reduction of interest expense on debt refinancings,related to apartment community dispositions. These decreases were partially offset by increased interest expense on debt associated with apartment community acquisitions and on One Canal, the construction of which was completed during 2016 and for which we ceased interest capitalization, and higher average borrowings on our revolving credit facility.
For the year ended December 31, 2015, compared to the year ended December 31, 2014, interest expense decreased by $21.3 million, or 9.6%. The decrease was primarily the result of lower average outstanding balances on non-recourse property debt for our existing apartment communities, decreases in property debt resulting from apartment community dispositions and higher prepayment penalties incurred in 2014. These decreases in interest expense were partially offset by increases related to our acquisition of apartment communities and on three of our redevelopment projectsredevelopments which reached completion of construction and therefore ceased capitalization of related interest expense.
For the year ended December 31, 2014, compared to the year ended December 31, 2013, interest expense decreased by $16.1 million, or 6.8%. The decrease was primarily the result of lower average outstanding balances on non-recourse property debt for our existing apartment communities and from sales, partially offset by an increase in interest expense on three of our redevelopment projects nearing or reaching completion and an increase in corporate interest due to higher average borrowings.

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Other, Net
Other, net includes gains or losses on disposition of interests in unconsolidated real estate partnerships, our equity in the income or loss of unconsolidated real estate partnerships, and the results of operations related to our legacy asset management business, which we account for under the profit sharing method, as further discussed in Note 3 to the consolidated financial statements in Item 8.
During the years ended December 31, 2016, 2015 2014 and 2013,2014, other, net primarily consisted of $5.6 million and $0.2 million of net income and $0.8 million of net losses, and $1.8 million of net income, respectively, related to our legacy asset management business. The increase in net income of the legacy asset management business from 2015 to 2016 was primarily due to the 2016 gain on the derecognition of the net liabilities of a portion of the legacy asset management business, as further described in Note 3 to the consolidated financial statements in Item 8. After income taxes and noncontrolling interest allocations, our share of the net losses and incomeresults of the legacy asset

management business totaled $4.4 million of net loss, $3.6 million of net income and $1.2 million of net losses and $22.5 million of net incomeloss for the years ended December 31, 2016, 2015 and 2014, and 2013, respectively (see Note 3 to the consolidated financial statements in Item 8).respectively.
Income Tax Benefit
Certain of our operations or a portion thereof, including property management, asset management and risk management are conducted through TRS entities. Additionally, some of our apartment communities, including redevelopment communities, are owned through TRS entities. Income taxes related to the results of continuing operations of our TRS entities (before gains on dispositions) are included in income tax benefit in our consolidated statements of operations.
For the year ended December 31, 2016, compared to the year ended December 31, 2015, income tax benefit decreased by $2.3 million, from $27.5 million to $25.2 million, primarily due to lower net losses recognized by apartment communities owned by our TRS entities, partially offset by higher historic tax credits associated with the redevelopment of certain apartment communities and utilization of low-income housing tax credits from our acquisition of the outside limited partner’s interest in a tax credit partnership.
For the year ended December 31, 2015, compared to the year ended December 31, 2014, income tax benefit increased by $7.5 million, from $20.0 million to $27.5 million, primarily due to the taxable income generated by our low-income housing tax credit business prior to the intercompany sale of this business in late 2014 to the Aimco Operating Partnership, and an increase in historic tax credits.
Based on the ongoing simplification of our TRS entities, and lower planned investment in redevelopments eligible for historic tax credits, we anticipate a reduction in our income tax benefit during the year ending December 31, 2017, to a range of $19 million to $22 million.
Prior to December 15, 2014, the interests in our low-income housing tax credit business were owned through TRS entities. On December 15, 2014, our TRS entities sold the interests held in our tax credit business to the Aimco Operating Partnership. Through the date of sale the income resulting from these interests was subject to income taxes. The FederalSubsequent to the sale of the tax liabilitiescredit business, the income resulting from interests held in the sale were substantially offset through the utilization of net operating loss carry forwards and historic and other tax credits.credit business will not result in federal income tax liability. In accordance with GAAP applicable to income tax accounting for intercompany transactions, net tax expense associated with the sale, totaling approximately $3.5 million, has beenwas deferred within our consolidated balance sheet at the time of sale, and is being recognized in earnings as the assets of the tax credit business affect our GAAP income or loss, through depreciation, impairment losses, or sales to third partythird-party entities. SubsequentRefer to the sale of the tax credit business, the income resulting from interests held in the tax credit business will not result in Federal income tax liabilityRecent Accounting Pronouncements heading within Note 2 to the Aimco Operating Partnership.
Forconsolidated financial statements in Item 8 for a discussion of a change in accounting standards affecting the year ended December 31, 2015, compared to the year ended December 31, 2014, incomeremaining deferred tax benefit increased by $7.5 million, from $20.0 million to $27.5 million, primarily due to the taxable income generated by our tax credit business prior to the intercompany sale of this business in late 2014 to the Aimco Operating Partnership, and an increase in historic tax credits.
For the year ended December 31, 2014, compared to the year ended December 31, 2013, income tax benefit increased by $18.1 million, from $2.0 million to $20.0 million, primarily due to a $7.6 million increase in the tax benefit associated with historic tax credits earned from the redevelopment of our Lincoln Place apartment community as well as an increase in taxable losses recognized by our TRS entities.this and other intercompany transactions.
Income from Discontinued Operations, Net
Effective January 1, 2014, we adopted ASU 2014-08, which generally eliminates the requirement that we classify within discontinued operations the results of operations and any gain or loss on sale related to apartment communities sold or classified as held for sale commencing in 2014. Based on the prospective application of the new accounting standard, the net earnings for any consolidated apartment communities sold through December 31, 2013, are included within income from discontinued operations. The components of net earnings that were classified as discontinued operations included all property-related revenues and operating expenses, depreciation expense recognized prior to the sale, property-specific interest expense and debt extinguishment gains and losses to the extent there was debt on the apartment community. In addition, any impairment losses on assets sold or held for sale and the net gain or loss on the disposal of apartment communities held for sale are reported in discontinued operations for the year ended December 31, 2013.
For the year ended December 31, 2013, income from discontinued operations totaled $203.2 million. During the year ended December 31, 2013, we sold 29 consolidated apartment communities for an aggregate sales price of $515.8 million, resulting in net proceeds of $233.1 million and a net gain of approximately $200.6 million (which is net of $11.8 million of related income taxes).

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Gain on Dispositions of Real Estate, Net of Tax
As discussed above, commencing in 2014,During the results of operations (both for current and prior periods) and gain or loss on sale foryear ended December 31, 2016, we sold eight consolidated apartment communities sold or classified as held are generally no longer required to be classified withinfor an aggregate sale price of $544.5 million, resulting in net proceeds of $524.2 million, and a net gain of $393.8 million (which is net of $6.4 million of related income from discontinued operations.taxes). During the year ended December 31, 2015, we sold 11 consolidated apartment communities for an aggregate salesales price of $404.3 million, resulting in net proceeds of $229.4 million, and a net gain of $180.6 million (which is net of $1.8 million of related income taxes). During the year ended December 31, 2014, we sold 30 consolidated apartment communities for an aggregate sales price of $735.6 million, resulting in net proceeds of $456.6 million and a net gain of approximately $288.6 million (which is net of $36.1 million of related income taxes).
NOI capitalization rate and Free Cash FlowFCF capitalization rate are common benchmarks used in the real estate industry for relative comparison of real estate valuations, including for apartment community sales, and are defined and further described under the Non-GAAP Performance and Liquidity Measures heading.heading below. The NOI and Free Cash FlowFCF capitalization rates for sales of our consolidated conventional and affordable apartment community salescommunities during the years ended December 31, 2016, 2015 2014 and 2013,2014, were as follows:
 2015 2014 2013
NOI capitalization rate:     
Conventional6.1% 6.8% 7.6%
Affordable3.8% 6.3% 5.8%
Free Cash Flow capitalization rate:     
Conventional4.9% 5.3% 5.8%
Affordable2.7% 5.3% 4.8%
 2016 2015 2014
NOI capitalization rate5.6% 6.1% 6.8%
Free Cash Flow capitalization rate4.9% 4.9% 5.3%
The apartment communities sold during 2016, 2015 2014 and 20132014 were primarily outside of our target markets or in less desirable locations within our target markets and had average revenues per apartment home significantly below those of our retained portfolio. Accordingly, the NOI and Free Cash FlowFCF capitalization rates for these properties may not be indicative of those of our retained portfolio.

Noncontrolling Interests in Consolidated Real Estate Partnerships
Noncontrolling interests in consolidated real estate partnerships reflects the results of our consolidated real estate partnerships allocated to the owners who are not affiliated with Aimco. The amounts of income or loss of our consolidated real estate partnerships that we allocate to owners not affiliated with Aimco include their share of property management fees, interest on notes and other amounts that we charge to these partnerships.
For the years ended December 31, 2016, 2015 and 2014, we allocated net income of $25.3 million, $4.8 million, and $24.6 million, respectively, to noncontrolling interests in consolidated real estate partnerships, a decrease of $19.8 million.partnerships. The amounts of net income allocated to noncontrolling interests decreasedwere lower in 2015 relative to 2016 and 2014, primarily due to a decrease inour derecognition of the amount of gains on dispositions allocated to noncontrolling interests in our consolidated real estate partnerships, as well as a decrease in the amount2016 and recognition of income allocated to noncontrolling interests due to deferred asset management fees recognized byin 2014 related to the legacy asset management business, duringas well as the year ended December 31, 2015.
For the years ended December 31, 2014 and 2013, we allocated net incomeallocation of $24.6 million and $12.5 million, respectively,gain on dispositions of real estate to noncontrolling interests in consolidated real estate partnerships, an increase of $12.1 million. Income allocable to noncontrolling interests in the legacy asset management business increased by $19.5 million, primarily due to the sales of interests in or dissolution of partnerships (see Note 3 to the consolidated financial statements in Item 8). The amounts of net income allocated to noncontrolling interests in other Aimco apartment communities decreased by $7.4 million, primarily due to a reduction in the amount of allocatable gains.interests.
Noncontrolling Interests in Aimco Operating Partnership
In Aimco’s consolidated financial statements, noncontrolling interests in Aimco Operating Partnership reflects the results of the Aimco Operating Partnership that are allocated to the holders of OP Units. The amount of the Aimco Operating Partnership’s income allocated to holders of preferred OP Units is equal to the amount of distributions they receive, which totaled $6.9 million, $6.5 million and $6.4 million for the years ended December 31, 2015, 2014 and 2013, respectively.
Aimco allocates the Aimco Operating Partnership’s income or loss to the holders of common OP Units and equivalents based on the weighted average number of these units (including those held by Aimco) outstanding during the period.
For the years ended December 31, 2015, 2014 and 2013, income allocated to common noncontrolling interests in the Aimco Operating Partnership were $11.6 million and $15.8 million and $11.6 million, respectively.

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Net Income Attributable to Aimco Preferred Stockholders and the Aimco Operating Partnership’s Preferred Unitholders
Net income attributable to Aimco preferred stockholders and the Aimco Operating Partnership’s preferred unitholders increased by $0.2 million and $0.5 million, respectively, during the year ended December 31, 2016, as compared to the year ended December 31, 2015. These increases were partly due to our July 2016 redemption of the Class Z preferred shares. In connection with the redemption, we wrote off previously deferred issuance costs of $1.3 million. Additionally, the $0.7 million excess of the redemption value over the carrying amount was reflected in the net income attributable to Aimco Preferred Stockholders and Aimco Operating Partnership’s Preferred Unitholders. These increases were partially offset by a decrease in preferred dividends due to the timing of redemption of the Class Z preferred stock and our March 2015 redemption of Series A CRA Preferred Stock.
Net income attributable to Aimco preferred stockholders and the Aimco Operating Partnership’s preferred unitholders increased by $3.8 million and $4.3 million, respectively, during the year ended December 31, 2015,, as compared to the year ended December 31, 2014.2014. These increases were primarily due to the issuance during May 2014 of $125.0 million of preferred securities with a 6.875% dividend/distribution rate, and were also partly attributable to the write-off of previously deferred issuance costs in connection with our March 2015 redemption of preferred securities.
Net income attributable to Aimco preferred stockholders and the Aimco Operating Partnership’s preferred unitholders increased by $5.1 million and $5.2 million, respectively, during the year ended December 31, 2014, as compared to the year ended December 31, 2013, primarily due to the May 2014 issuance of preferred securities discussed above. See Notes 96 and 107 to the consolidated financial statements in Item 8 for further discussion of our preferred securities.
Critical Accounting Policies and Estimates
We prepare our consolidated financial statements in accordance with GAAP, which requires us to make estimates and assumptions. We believe that the following critical accounting policies involve our more significant judgments and estimates used in the preparation of our consolidated financial statements.
Capitalized Costs
We capitalize costs, including certain indirect costs, incurred in connection with our capital additions activities, including redevelopments and developments, other tangible apartment community improvements and replacements of existing apartment community components. Included in these capitalized costs are payroll costs associated with time spent by site employees in connection with the planning, execution and control of all capital additions activities at the apartment community level. We characterize as “indirect costs” an allocation of certain department costs, including payroll, at the area operations and corporate levels that clearly relate to capital additions activities. We also capitalize interest, property taxes and insurance during periods in which redevelopments and developments are in progress. We commence capitalization of costs, including certain indirect costs, incurred in connection with our capital addition activities, at the point in time when activities necessary to get apartment communities ready for their intended use begin. These activities include when apartment communities or apartment homes are undergoing physical construction, as well as when apartment homes are held vacant in advance of planned construction, provided that other activities such as permitting, planning and design are in progress. We cease the capitalization of costs when the apartment communities or components thereof are substantially complete and ready for their intended use, which is typically when construction has been completed and apartment homes are available for occupancy. We charge costs including ordinary repairs, maintenance and resident turnover costs to property operating expense, as incurred. Refer to the discussion of investing activities within the Liquidity and Capital Resources section for a summary of costs capitalized during the periods presented.
Impairment of Long-Lived Assets
Real estate and other long-lived assets to be held and used are stated at cost, less accumulated depreciation and amortization, unless the carrying amount of the asset is not recoverable. If events or circumstances indicate that the carrying amount of an apartment community may not be recoverable, we make an assessment of its recoverability by comparing the carrying amount to our estimate of the undiscounted future cash flows, excluding interest charges, of the apartment community. If the carrying amount

exceeds the estimated aggregate undiscounted future cash flows, we recognize an impairment loss to the extent the carrying amount exceeds the estimated fair value of the apartment community.
OurAs part of our portfolio strategy, iswe seek to sell each year the 5%up to 10% of the apartment communities in our portfolio with lower projected FCF returns, lower operating margins, and lower expected future rent growth, andto reinvest the sale proceeds from such sales in apartment communities already in our portfolio, through property upgrades and redevelopment or through the purchase of other apartmentcommunities in our current portfolio, occasional development of new communities and in limited situations,selective acquisitions with projected FCF returns higher than expected for the development of apartment communities.communities sold. As we execute this strategy, we evaluate alternatives to sell or reduce our interest in apartment communities that do not align with our long-term investment strategy, although there is no assurance that we will sell or reduce our investment in such apartment communities during the desired time frame. For any apartment communities that are sold or meet the criteria to be classified as held for sale during the next 12 months, the reduction in the estimated holding period for these apartment communities may result in impairment losses.
Capitalized Costs
We capitalize costs, including certain indirect costs, incurred in connection with our capital additions activities, including redevelopment, development and construction projects, other tangible apartment community improvements and replacements of existing apartment community components. Included in these capitalized costs are payroll costs associated with time spent by site employees in connection with the planning, execution and control of all capital additions activities at the apartment community level. We characterize as “indirect costs” an allocation of certain department costs, including payroll, at the area operations and corporate levels that clearly relate to capital additions activities. We also capitalize interest, property taxes and insurance during periods in which redevelopment, development and construction projects are in progress. We commence capitalization of costs, including certain indirect costs, incurred in connection with our capital addition activities, at the point in time when activities necessary to get apartment communities ready for their intended use begin. These activities include when apartment communities or apartment homes are undergoing physical construction, as well as when apartment homes are held vacant in advance of planned construction, provided that other activities such as permitting, planning and design are in progress. We cease the capitalization of costs when the assets are substantially complete and ready for their intended use, which is typically when construction has been completed and apartment homes are available for occupancy. We charge costs including ordinary repairs, maintenance and resident turnover costs to property operating expense, as incurred. Refer to the discussion of investing activities within the Liquidity and Capital Resources section for a summary of costs capitalized during the periods presented.
Non-GAAP Performance and Liquidity Measures
Various of the 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 financial measures used or disclosed within this annual report, reconciliations of the non-GAAP financial measures to the most comparable financial measure computed in accordance with GAAP are provided.

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Economic Income represents the annual change in Net Asset Value per share plus cash dividends per share. Net Asset Value is the estimated fair value of our assets, net of liabilities, noncontrolling interests and preferred equity.
Funds from Operations, Pro forma Funds From Operations and Adjusted Funds From Operations are non-GAAP financial measures, which are defined and further described below under the Funds From Operations and Adjusted Funds From Operations heading.
Free Cash Flow,FCF, as calculated for our retained portfolio, represents an apartment community’s property net operating income,NOI, 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 Funds From Operations and Adjusted Funds From Operations heading and the Liquidity and Capital Resources heading). Free Cash Flow internal rate of returnFCF margin represents the rate of return generated from an apartment community’s Free Cash FlowNOI 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 is a method of measuring the proceeds from its eventual sale.cost 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.
Free Cash FlowNOI capitalization rate and NOIFCF capitalization rate are common benchmarks used in the real estate industry for relative comparison of real estate valuations, including for apartment community sales. For purposes of calculating such capitalization rates for apartment community sales, Free Cash Flow capitalization rate represents an apartment community’s trailing twelve month NOI prior to sale, less $1,200 of assumed annual capital replacement spending, divided by gross proceeds, and NOI capitalization rate represents an apartment community’s trailing twelve month NOI prior to sale, less a management fee equal to 3% of revenue, divided by gross proceeds.
Same store property operating results and proportionate property net operating income are defined and further described under the preceding Results of Operations – Real Estate Operations heading. Average revenue FCF capitalization rate represents an apartment community’s NOI (as calculated for NOI capitalization rate) less $1,200 per effective apartment home represents rental and other property revenuesof assumed annual capital replacement spending, divided by the number of occupied apartment homes multiplied by our ownership interest in the apartment community as of the end of the current period.gross proceeds.
Funds From Operations and Adjusted Funds From Operations
Funds From Operations, or 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. The National Association of Real Estate Investment Trusts, or NAREIT, defines FFO as net income or loss computed in accordance with GAAP, excluding gains from sales of, and impairment losses recognized with respect to, depreciable property,real estate, plus depreciation and amortization related to real estate, and after adjustments for unconsolidated partnerships and joint ventures. Adjustments for unconsolidated partnerships and joint ventures are calculated on the same basis to determine FFO. We calculate FFO attributable to Aimco common stockholders (diluted) by subtracting, if dilutive, redemption or repurchase related preferred stock issuance costs and dividends on preferred stock, and adding back dividends/distributions on dilutive preferred securities and premiums or discounts on preferred stock redemptions or repurchases.
In addition to FFO, we compute Pro forma FFO and Adjusted FFO, or AFFO, which are also non-GAAP financial measures that we believe are helpful to investors in understanding our performance. Pro forma FFO represents FFO attributable to Aimco common stockholders (diluted), excluding preferred equity redemption-related amounts (adjusted for noncontrolling interests). Preferred equity redemption-related amounts (gains or losses) are items that periodically affect our operating results and we exclude these items from our calculation of Pro forma FFO because such amounts are not representative of our operating performance. AFFO represents Pro forma FFO reduced by Capital Replacements (also adjusted for noncontrolling interests), which represents our estimation of the capital additions made to replace capital assets consumed during our ownership.ownership period. When we make capital additions at an apartment community, we evaluate whether the additions enhance the value, profitability or useful life of

an asset as compared to its condition at the time we purchased the asset.apartment community. We classify as Capital Improvements those capital additions that meet these criteria and we classify as Capital Replacements those that do not. AFFO is a key financial indicator we use to evaluate our operational performance and is usedone of the factors that we use to help determine the amounts of our dividend payments.
FFO, Pro forma FFO and AFFO should not be considered alternatives to net income (loss) or net cash flows from operating activities,, as determined in accordance with GAAP, as indications of our performance or as measures of liquidity.performance. Although we use these non-GAAP measures for comparability in assessing our performance againstcompared to other REITs, not all REITs compute these same measures.measures and those who do, may not compute them in the same manner. Additionally, computation of AFFO is subject to definitionsour definition of capital spending, which are subjective.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.

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For the years ended December 31, 2016, 2015 2014 and 2013,2014, Aimco’s FFO, Pro forma FFO and AFFO are calculated as follows (in thousands):
2015 2014 20132016 2015 2014
Net income attributable to Aimco common stockholders (1)$235,966
 $300,220
 $203,673
$417,781
 $235,966
 $300,220
Adjustments:          
Depreciation and amortization, net of noncontrolling partners’ interest298,880
 275,175
 282,235
Depreciation and amortization related to non-real estate assets, net of noncontrolling partners’ interest(10,269) (9,627) (11,273)
Gain on dispositions and other, net of income taxes and noncontrolling partners’ interest(173,694) (265,358) (19,321)
Provision for impairment losses related to depreciable real estate assets, net of noncontrolling partners’ interest655
 2,197
 
Discontinued operations:     
Gain on dispositions and depreciation of rental property, net of noncontrolling partners’ interest
 
 (152,567)
Real estate depreciation and amortization, net of noncontrolling partners’ interest314,840
 288,611
 265,548
Gain on dispositions and other, net of noncontrolling partners’ interest(381,131) (174,797) (299,219)
Income tax provision related to gain on disposition of real estate6,374
 1,758
 36,058
Common noncontrolling interests in Aimco Operating Partnership’s share of above adjustments (2)(5,548) (777) (5,346)2,782
 (5,548) (777)
Amounts allocable to participating securities(473) (5) (377)88
 (473) (5)
FFO attributable to Aimco common stockholders – diluted$345,517
 $301,825
 $297,024
$360,734
 $345,517
 $301,825
Preferred equity redemption related amounts658
 
 
1,877
 658
 
Pro forma FFO attributable to Aimco common stockholders – diluted$346,175
 $301,825
 $297,024
$362,611
 $346,175
 $301,825
Capital Replacements, net of common noncontrolling interests in Aimco Operating Partnership and participating securities(53,925) (56,051) (75,067)(55,289) (53,925) (56,051)
AFFO attributable to Aimco common stockholders – diluted$292,250
 $245,774
 $221,957
$307,322
 $292,250
 $245,774
          
Weighted average common shares outstanding – diluted (FFO, Pro forma FFO and AFFO) (3)155,570
 146,002
 145,532
156,391
 155,570
 146,002
     
Net income attributable to Aimco per common share – diluted$2.67
 $1.52
 $2.06
FFO per share – diluted$2.31
 $2.22
 $2.07
Pro Forma FFO per share – diluted$2.32
 $2.23
 $2.07
AFFO per share – diluted$1.97
 $1.88
 $1.68
(1)
Represents the numerator for calculating Aimco’s earnings per common share in accordance with GAAP (see Note 1310 to the consolidated financial statements in Item 8).
(2)
During the years ended December 31, 2016, 2015, 2014 and 2013,2014, the Aimco Operating Partnership had outstanding, on average, 7,760,597, 7,656,626 7,723,822 and 7,965,4317,723,822 common OP Units and equivalents.
(3)Represents the denominator for Aimco’s earnings per common share – diluted, calculated in accordance with GAAP, plus common share equivalents that are dilutive for FFO, Pro forma FFO and AFFO.
For the year ended December 31, 20152016 as compared to the 2014,2015, Pro forma FFO increased 8%4% (on a diluted per share basis) primarily as a result of improvedof: Conventional Same Store property operating results andNOI growth, increased contribution from development, redevelopment and acquisition apartment communities, lower interest expense and lower casualty losses. The increases were partially offset by the loss of income from apartment communities that were sold.sold in 2016 and 2015 and a lower income tax benefit due to the simplification of our TRS entities. For the same period, AFFO increased 12%5% (on a diluted per share basis), primarily as a result of the Pro forma FFO growth as well as a decrease in Capital Replacements spending as a percentage of net operating income. As we concentrate our investment capital in higher quality, higher price-point apartment communities, our free cash flow margins are increasing and contributing to higher AFFO. Refer to the Liquidity and Capital Resources section for further information regarding our Capital Replacements and other capital investing activities.growth.
The Aimco Operating Partnership does not separately compute or report FFO, Pro forma FFO or AFFO. However, based on Aimco’s method for allocation of such amounts of FFO, Pro forma FFO and AFFO to noncontrolling interests in the Aimco Operating Partnership, as well as the limited differences between Aimco’s and the Aimco Operating Partnership’s net income amounts during the periods presented, 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.

Economic Income
Economic Income represents 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 valuing shares in public real estate companies because it seeks to value the assets held by public companies in a manner similar to those values established in private transactions. Our estimated NAV per share and the quoted share price of Aimco Common Stock are not necessarily equal.
We estimate NAV on a semiannual basis, as of the end of the first and third quarters. Economic Income for 2016, was calculated using the change in NAV per share between September 30, 2015 and 2016. 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.
A reconciliation of NAV to total equity, which we believe is the most directly comparable GAAP measure, is provided below (in millions, except per share data):
 September 30, 2016
Total equity  $1,828
Fair value adjustment for real estate   
 Less: real estate, at depreciated cost$(5,756)  
 Plus: fair value of real estate (1)12,341
  
  Adjustment to present real estate at fair value  6,585
Fair value adjustment for total indebtedness   
 Plus: total indebtedness, net4,056
  
 Less: fair value of indebtedness (2)(3,851)  
  Adjustment to present indebtedness at fair value  205
Adjustments to present other tangible assets, liabilities and preferred equity at fair value (3)  (19)
Estimated NAV  $8,599
 Total shares, units and dilutive share equivalents (4)  165
Estimated NAV per weighted average common share and unit - diluted  $52
(1)We compute NAV by estimating the value of our conventional communities and our affordable apartment communities that are not held through low-income housing tax credit partnerships using a variety of methods we believe are appropriate based on the characteristics of the communities, including applying market-based capitalization rates published by a third party to annualized apartment community NOI for the most recent quarter; discounted projected future cash flows; and contract price for apartment communities scheduled for sale.
(2)We calculate the fair value of our debt based on the money-weighted average interest rate on our debt, which rate takes into account the timing of amortization and maturities, and a market rate that takes into account the duration of the property debt as well as loan-to-value and coverage ratios.
(3)Other tangible assets and liabilities were generally valued at their carrying amounts and reduced by the noncontrolling interests’ portion of these amounts and exclude intangible assets and liabilities reflected on our consolidated balance sheet. Our affordable communities held in low-income housing tax credit partnerships are consolidated for GAAP purposes where we expect to receive substantially all of the operating cash as well as a significant portion of the residual cash in payment of various fees and loans under the governing agreements. Our interests in these affordable communities is valued at the discounted future cash flows we expect to receive pursuant to the governing agreements, and such value is included in the value of other tangible assets for our NAV computation. The fair value of our preferred equity includes a mark-to-market adjustment for listed securities based on their closing share price on the valuation date.
(4)Total shares, units and dilutive share equivalents represents Common Stock, OP Units, participating unvested restricted shares and the dilutive effect of common stock equivalents outstanding as of September 30, 2016.

Leverage Ratios
As discussed under the Balance Sheet and Liquidity heading, as part of our leverage strategy, we target the ratio of Proportionate Debt and Preferred Equity to Adjusted EBITDA to be below 7.0x and we target the ratio of Adjusted EBITDA to Adjusted Interest Expense and Preferred Dividends to be greater than 2.5x. We believe these ratios are important measures as they are commonly used by investors and analysts to assess the relative financial risk associated with balance sheets of 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 represents our share of the debt obligations recognized in our consolidated financial statements, as well as our share of the debt obligations of our unconsolidated partnerships,

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reduced by our share of the cash and restricted cash of our consolidated and unconsolidated partnerships, and also by our investment in the subordinate tranches of a securitization trust that holds certain of our property debt (essentially, our investment in our own non-recourse property loans).
In our Proportionate Debt computation, we increase our recorded debt by unamortized debt issue costs because these amounts represent cash expended in earlier periods and do not reduce our contractual obligations, and we reduce our recorded debt obligations by the amounts of cash and restricted cash on-hand (such restricted cash amounts being 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 obligations 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 Aimco’s preferred stock and the Aimco Operating Partnership’s preferred OP Units. Preferred Equity, although perpetual in nature, is another component of our overall leverage.
Adjusted EBITDA is a non-GAAP performance measure. We believe Adjusted EBITDA provides investors relevant and useful information because it allows investors to view income from our operations on an unleveraged basis, before the effects of taxes, depreciation and amortization, gains or losses on sales of and impairment losses related to real estate and various other items described below. The items excluded from Adjusted EBITDA are generally non-cash items included in net income computed in accordance with GAAP that do not affect our ability to service our debt obligations or preferred equity requirements.
Adjusted EBITDA represents Aimco’s share of the consolidated amount of our net income, adjusted to exclude the effect of the following items for the reasons set forth below:
interest expense, preferred dividends and interest income we earn on our investment in the subordinate tranches of a securitization trust that holds certain of our property debt, to allow investors to compare a measure of our earningsperformance before the effects of our capital structure and indebtedness with that of other companies in the real estate industry;
income taxes, to allow investors to measure our performance independent of income taxes, which may vary significantly from other companies within our industry due to leverage and tax planning strategies, among other drivers;considerations;
depreciation and amortization, gains or losses on dispositions and impairment losses related to real estate, for reasons similar reasons to those set forth in our discussion of FFO, Pro forma FFO and AFFO in the preceding section; and
provisions for (or recoveries of) losses on notes receivable,other items, including gains on dispositions of non-depreciable assets, and non-cash stock-based compensation, as these are items that periodically affect our operations but that are not necessarily representative of our ongoing ability to service our debt obligations;
the interest income we earn on our investment in the subordinate tranches of a securitization that holds certain of our property debt, as this income is being generated indirectly from our payments of principal and interest associated with the property debt held by the trust and such amounts will ultimately repay our investment in the trust; and
EBITDA amounts related to our legacy asset management business, including the debt obligations and associated interest expense for the legacy asset management business, as we are not responsible for the operation of this portfolio and associated interest payments are not funded from our operations.obligations.
While Adjusted EBITDA is a relevant measure of performance and is commonly used in leverage ratios, it does not represent net income as defined by GAAP, and should not be considered as an alternative to net income in evaluating our performance.  Further, our definition and computation of Adjusted EBITDA may not be comparable to similar measures reported by other companies.

Adjusted Interest Expense, as calculated in our leverage ratios, 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. Our calculation of Adjusted Interest Expense is set forth in the table below. We exclude from our calculation of Adjusted Interest:Interest Expense:
debt prepayment penalties, which are items that, from time to time, affect our operating results, but are not representative of our scheduled interest obligations;
the amortization of deferred financingdebt issue costs, as these amounts have already been expended in previous periods and are not representative of our current or prospective debt service requirements; and

the income we receive on our investment in the securitization trust that holds certain of our property debt, as this income is being generated indirectly from interest we pay with respect to property debt held by the trust.
Preferred Dividends represents the preferred dividends paid on Aimco’s preferred stock and the preferred distributions paid on the Aimco Operating Partnership’s preferred OP Units, exclusive of preferred equity redemption related amounts. We add Preferred

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Dividends to Adjusted Interest Expense for a more complete picture of the interest and dividend requirements of our leverage, inclusive of perpetual preferred equity.
For the years ended December 31, 20152016 and 2014,2015, reconciliations of the most closely related GAAP measures to our calculations of Proportionate Debt, Preferred Equity, Adjusted EBITDA, Adjusted Interest Expense and Preferred Dividends, as used in our leverage ratios, are as follows (in thousands):
December 31, December 31,
2015 2014 2016 2015
Total indebtedness$3,873,160
 $4,135,139
 $3,884,632
 $3,849,141
Adjustments:       
Debt issue costs related to non-recourse property debt22,945
 24,019
Proportionate share adjustments related to debt obligations of consolidated and unconsolidated partnerships(139,295) (117,827) (136,794) (139,295)
Cash and restricted cash(137,745) (120,416) (131,150) (137,745)
Proportionate share adjustments related to cash and restricted cash held by consolidated and unconsolidated partnerships2,893
 2,103
 2,320
 2,893
Securitization investment and other(65,449) (66,074) 
Securitization trust investment and other(74,294) (65,449)
Proportionate Debt$3,533,564
 $3,832,925
 $3,567,659
 $3,533,564
       
Preferred stock$159,126
 $186,126
 $125,000
 $159,126
Preferred OP Units87,926
 87,937
 103,201
 87,926
Preferred Equity247,052
 274,063
 228,201
 247,052
Proportionate Debt plus Preferred Equity$3,780,616
 $4,106,988
 $3,795,860
 $3,780,616
Year Ended December 31, Year Ended December 31,
2015 2014 2016 2015
Net income attributable to Aimco Common Stockholders$235,966
 $300,220
 $417,781
 $235,966
Adjustments:       
Interest expense, net of noncontrolling interest195,934
 216,882
 191,548
 194,423
Income tax benefit(29,549) (20,026) (26,159) (29,549)
Depreciation and amortization, net of noncontrolling interest298,880
 275,175
 325,865
 298,880
Gains on disposition and other, net of income taxes and noncontrolling partners' interests(173,694) (265,358) 
Interest income received on securitization investment(6,092) (5,697) 
Gains on disposition and other, net of income taxes and noncontrolling partners’ interests(374,757) (173,039)
Preferred stock dividends11,994
 11,794
Interest income earned on securitization trust investment(6,825) (6,092)
Net income attributable to noncontrolling interests in Aimco Operating Partnership28,242
 19,447
Other items, net32,631
 36,075
 (1,723) 2,246
Adjusted EBITDA$554,076
 $537,271
 $565,966
 $554,076

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Year Ended December 31, Year Ended December 31,
2015 2014 2016 2015
Interest expense$199,685
 $220,971
 $196,389
 $199,685
Adjustments:       
Proportionate share adjustments related to interest of consolidated and unconsolidated partnerships(5,262) (6,064) (4,841) (5,262)
Debt prepayment penalties and other non-interest items(6,068) (9,231) (3,295) (6,068)
Amortization of deferred loan costs(4,227) (3,674) 
Interest income received on securitization investment(6,092) (5,697) 
Adjusted Interest$178,036
 $196,305
 
Amortization of debt issue costs(4,685) (4,227)
Interest income earned on securitization trust investment(6,825) (6,092)
Adjusted Interest Expense$176,743
 $178,036
       
Preferred stock dividends$11,794
 $7,947
 $11,994
 $11,794
Preferred stock redemption related amounts(695) 
 (1,980) (695)
Preferred OP Unit distributions6,943
 6,497
 7,239
 6,943
Preferred Dividends18,042
 14,444
 17,253
 18,042
Adjusted Interest and Preferred Dividends$196,078
 $210,749
 
Adjusted Interest Expense and Preferred Dividends$193,996
 $196,078

Liquidity and Capital Resources
Liquidity is the ability to meet present and future financial obligations. Our primary source of liquidity is cash flow from our operations. Additional sources are proceeds from sales of apartment communities, proceeds from refinancings of existing property debt, borrowings under new property debt, borrowings under our Credit Agreementrevolving credit facility and proceeds from equity offerings.
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 and investments in, apartment communities, including redevelopment, development and other capital spending.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 Credit Agreementrevolving 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 and apartment community acquisitions, through long-term borrowings primarily non-recourse,(primarily non-recourse), the issuance of equity securities (including OP Units), the sale of apartment communities and cash generated from operations.
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 further debt needs, we may consider alternative sources of liquidity, such as reductions in capital spending or proceeds from assetapartment community dispositions.
Our investment grade rating would be useful to access 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.
At December 31, 2015,2016, approximately 93%94% of our leverage consisted of property-level, non-recourse, long-dated, amortizing debt 1% consisted of borrowings under our revolving credit agreement and 6% consisted of perpetual preferred equity, a combination which reduces our refunding and re-pricing risk.equity. The weighted average maturity of our property-level debt was 8.18.0 years, with 6.7%$260.2 million of our unpaid principal balances maturing during 2016 and, on2017. On average, 9.0%8.6% of our unpaid principal balances maturingwill mature each year from 20172018 through 2019.2020. Approximately 98% of our property-level debt is fixed-rate, which provides a hedge against increases in interest rates, capitalization rates and inflation.
Although ourOur primary sourcessource of leverage areis property-level, non-recourse, long-dated, fixed-rate, amortizing debt and perpetual preferred equity, wedebt. We also have a Senior Secured Credit Agreement with a syndicate of financial institutions which we refer to as our Credit Agreement. The Credit Agreementthat provides for $600.0 million of revolving loan commitments, which we use for working capital and other short-term purposes. Borrowings under the Credit Agreement bear interest at a rate set forth on a pricing grid, which rate varies based on our leverage (initially either at LIBOR, plus 1.35%, or, at our option, Prime plus 0.35%). At December 31, 2015,2016, we had $27.0$17.9 million of outstanding borrowings under the Credit Agreement, and we had the capacityright to

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borrow $536.6an additional $570.3 million, netafter consideration of the outstanding borrowings and $36.4$11.8 million for undrawn letters of credit backed by the Credit Agreement. The Credit Agreement provides us with an option to expand the aggregate loan commitments, subject to customary conditions, by up to $200.0 million. Our borrowings

under the Credit Agreement represented less than 1% of our total leverage as of December 31, 2016 and the interest rate on our outstanding borrowings was 1.59%2.09% at December 31, 2015.2016.
As of December 31, 2016, our outstanding perpetual preferred equity represented approximately 6% of our total leverage. Our preferred securities are perpetual in nature; however, for illustrative purposes, we compute the weighted average maturity of our total leverage assuming a 40-year maturity on our preferred securities.
The combination of non-recourse property level debt, borrowings under our Credit Agreement and perpetual preferred equity that comprises our total leverage, reduces our refunding and re-pricing risk. The weighted average maturity for our total leverage described above was 9.8 years as of December 31, 2016.
Under the Credit Agreement, we have agreed to maintain Debt Service and Fixed Charge Coverage ratiosratio of 1.50x and 1.40x, respectively, as well as other covenants customary for similar revolving credit arrangements. For the year ended December 31, 2015,2016, our Debt Service and Fixed Charge Coverage ratios were 2.01x and 1.89x, respectively,ratio was 1.96x, compared to ratiosratio of 1.82x and 1.73x, respectively,1.89x for the year ended December 31, 2014.2015. We expect to remain in compliance with these covenantsthis covenant during the next 12 months.
At December 31, 2015,2016, we had $50.8$61.2 million in cash and cash equivalents and $87.0$69.9 million of restricted cash, an increase of $21.8$10.5 million and a decrease of $4.5$17.1 million, respectively, from December 31, 2014.2015. Restricted cash primarily consists of reserves and escrows held by lenders for bond sinking funds, capital additions, property taxes and insurance and escrows related to resident security deposits. At December 31, 2016, we had approximately $700 million of cash and restricted cash on hand and credit available on our Credit Agreement.
The following discussion relates to changes in cash due to operating, investing and financing activities, which are presented in our consolidated statements of cash flows in Item 8.8 of this report.
Operating Activities
For the year ended December 31, 2015,2016, our net cash provided by operating activities of $359.9$377.7 million was primarily related to operating income from our consolidated apartment communities, which is affected primarily by rental rates, occupancy levels and operating expenses related to our portfolio of apartment communities, in excess of payments of operating accounts payable and accrued liabilities.communities. Cash provided by operating activities for the year ended December 31, 2015,2016, increased by $38.5$17.8 million as compared to the year ended December 31, 2014, primarily due to an increase in the net operating income of apartment communities in our retained portfolio,2015, primarily due to improved operating results as well asof our conventional portfolio, including increased contribution from redevelopment and development apartment communities and a decrease in cash paid for interest primarily due to repayment of non-recourse property debt. These increases in cash provided by operating activities were partially offset by a decrease in the net operating income ofNOI associated with apartment communities we sold during 20152016 and 2014.2015.
Investing Activities
For the year ended December 31, 2015,2016, our net cash used in investing activities of $170.9$97.8 million consisted primarily of our purchase of Indigo and other capital expenditures, and purchases of real estate, partially offset by proceeds from dispositionsthe sale of real estate. apartment communities. We funded a portion of our purchase of Indigo with $25 million in nonrefundable deposits provided to the seller in 2015 and a portion was funded at closing through the issuance of $17 million of preferred OP units. The balance of the purchase was funded through a combination of proceeds from non-recourse property debt and from the sale of apartment communities.
Capital expenditures totaled $346.6 million, $367.2 million $367.3 million and $350.3$367.3 million during the years ended December 31, 2016, 2015 2014 and 2013,2014, respectively. We generally fund capital additions with cash provided by operating activities and cash proceeds from apartment community sales.
We categorize our capital spending broadly into six primary categories:
capital replacements, which represents our estimation of therepresent capital additions made to replace capital assetsthe portion of acquired apartment communities consumed during our period of ownership;
capital improvements, which are non-redevelopment capital additions that are made to enhance the value, profitability or useful life of an assetapartment community from its original purchase condition;
property upgrades, which may include kitchen and bath remodeling, energy conservation projects and investments in longer-lived materials designed to reduce turnover and maintenance costs, all of which are generally lesser in scope than redevelopment additions and do not significantly disrupt property operations;
redevelopment additions, which represent capital additions intended to enhance the value of the apartment community through the ability to generate higher average rental rates, and may include costs related to entitlement, which enhance

the value of a community through increased density, and costs related to renovation of exteriors, common areas or apartment homes;
development additions, which represent construction and related capitalized costs associated with our ground-up development projects;of apartment communities; and
casualty replacements spending, which represent construction and related capitalized costs incurred in connection with the restoration of an assetapartment community after a casualty event such as a severe snow storm, hurricane, tornado or flood.
We exclude from these measures the amounts of capital spending related to apartment communities sold or classified as held for sale at the end of the period. Note that we deduct capital replacements from Pro-forma FFO to calculate AFFO, which we use to help determine the amounts of our dividend payments.December 31, 2016.

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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 flow for the years ended December 31, 2016, 2015 2014 and 2013,2014, are presented below (dollars in thousands):
2015 2014 20132016 2015 2014
Capital replacements$49,432
 $48,791
 $62,536
$46,821
 $45,786
 $48,523
Capital improvements21,988
 25,029
 55,259
17,019
 20,894
 25,028
Property upgrades49,433
 49,287
 32,709
76,094
 48,070
 46,867
Redevelopment additions117,820
 181,951
 178,287
155,398
 117,794
 181,952
Development additions115,638
 46,928
 15,898
31,823
 115,638
 46,928
Casualty replacements7,004
 5,800
 6,650
8,473
 5,803
 5,799
Total capital additions361,315
 357,786
 351,339
335,628
 353,985
 355,097
Plus: additions related to apartment communities sold or held for sale1,633
 9,668
 24,699
2,886
 8,963
 12,357
Consolidated capital additions362,948
 367,454
 376,038
338,514
 362,948
 367,454
Plus: net change in accrued capital spending4,232
 (130) (25,700)8,131
 4,232
 (130)
Capital expenditures per consolidated statement of cash flows$367,180
 $367,324
 $350,338
$346,645
 $367,180
 $367,324
For the years ended December 31, 2016, 2015 2014 and 2013,2014, we capitalized $9.6 million, $11.7 million $14.2 million and $17.6$14.2 million of interest costs, respectively, and $32.9 million, $28.2 million $29.2 million and $33.2$29.2 million of other direct and indirect costs, respectively.
Redevelopment and Development
During the year ended December 31, 2016, we invested $155.4 million in our redevelopments, the majority of which related to six apartment communities detailed on the following table, and we invested $31.8 million in development, which primarily related to the completion of One Canal.
Information regarding our ongoing redevelopmentredevelopments and development projectsdevelopments at December 31, 2015, are2016, is presented below (dollars in millions):
    Schedule
 
Total Number
of Apartment Homes at Completion
Estimated Net 
Investment at Completion
Inception-to-Date Net
Investment
Construction
Start
Initial
Occupancy
Stabilized OccupancyStabilized NOI
Redevelopment       
Park Towne Place948
$97.0
$62.7
Multiple3Q 20151Q 20172Q 2018
The Sterling535
62.5
47.1
MultipleMultiple3Q 20164Q 2017
Subtotal1,483
$159.5
$109.8
    
        
Development       
One Canal310
$195.0
$162.7
4Q 20132Q 20163Q 20174Q 2018
Total1,793
$354.5
$272.5
    
        
Redevelopment
Construction Completed
       
Lincoln Place795
$360.0
$359.0
MultipleMultiple2Q 20153Q 2016
The Preserve at Marin126
124.0
123.4
4Q 20121Q 20143Q 20154Q 2016
2900 on First Apartments135
15.2
14.7
1Q 20141Q 20142Q 20153Q 2016
Ocean House on Prospect53
14.8
14.6
4Q 20143Q 20154Q 20151Q 2017
Subtotal1,109
$514.0
$511.7
    
        
Development
Construction Completed
       
Vivo91
$45.0
$43.8
n/a4Q 20153Q 20164Q 2017
Total Completed 20151,200
$559.0
$555.5
    
 Location Apartment Homes to be Redeveloped or Developed Estimated / Actual Net Investment Inception-to-Date Net Investment Expected Stabilized Occupancy Expected NOI Stabilization
In Active Construction           
Bay Parc PlazaMiami, FL 
 $16.0
 $1.6
 (1) (1)
Palazzo at Park La BreaLos Angeles, CA 389
 24.5
 7.8
 2Q 2018 3Q 2019
Park Towne PlacePhiladelphia, PA 701
 136.3
 108.7
 1Q 2018 2Q 2019
Saybrook PointeSan Jose, CA 324
 15.2
 5.0
 1Q 2019 2Q 2020
The SterlingPhiladelphia, PA 534
 73.0
 63.5
 3Q 2017 4Q 2018
YorktownLombard, IL 292
 25.7
 8.5
 3Q 2018 4Q 2019
In Lease-up           
One CanalBoston, MA 310
 195.0
 191.9
 1Q 2017 2Q 2018
Total  2,550
 $485.7
 $387.0
    
            
(1) This phase of the redevelopment project encompasses common area, amenity improvements and the creation of a new retail space.
Stabilized OccupancyNet investment represents the period in which we expecttotal actual or estimated investment, net of tax and other credits earned as a direct result of our redevelopment or development of the apartment communities being developed or redeveloped to achieve targeted physical occupancy, generally greater than 90%. Stabilized community.

NOI Stabilization represents the period in which we expect the communities to achieve stabilized rents and operating costs, generally five quarters after Stabilized Occupancy.occupancy stabilization.

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During the year ended December 31, 2015,2016, we invested $117.8$85.2 million in ourthe ongoing redevelopment projects, and we completed construction at four redevelopment projects. Lincoln Place, in Venice, California, and The Preserve at Marin, in Corte Madera, California, were completed in the first quarter and, as of December 31, 2015, were 96% and 94% occupied, respectively.2900 on First in Seattle, Washington, was completed during the second quarter and, as of December 31, 2015, was 90% occupied. Ocean House on Prospect, in La Jolla, California, was completed in the fourth quarter and, as of December 31, 2015, was 94% occupied.
Redevelopment of Park Towne Place includes significant renovation of existing commercial space, upgrading common areas and amenities, and the phased redevelopment of apartment homes. The first phase included redevelopmentSterling, mixed-use communities located in Center City Philadelphia. We are redeveloping three of the commercial space, common areasfour towers at Park Towne Place, one at a time, and amenities, andat December 31, 2016, had completed 468 of the 701 apartment homes being redeveloped. We completed lease-up of the homes in the South Tower one of the four residential towers that comprise the community. The estimated net investment for this first phase of redevelopment of $60 million, reflects a gross investment of $71 million, reduced by $11 million of historic tax credits. At the end of the year, 85% of the 229 apartment homes in the South Tower had been redeveloped and rent achievement to date is in excess of Aimco’s underwriting. Redevelopment of the remaining apartment homes in the South Tower, along with the common areas and amenities have since been substantially completed. Redevelopment of the 245 apartment home East Tower, approved in the third quarter 2015, is underway. This phase represents a net investment of $37 million, reflecting an estimated gross investment of $45.5 million reduced by approximately $8.5 million of historic tax credits. In total, 474 apartment homes at Park Towne Place have been approved for redevelopment. As of the end of January 2016, we had leased 83%70% of the apartment homes in the SouthEast Tower and signed leases for 55% of the 12,560 square feet of commercial space in the community,were leased at rents above underwriting.
Redevelopment of The Sterling includes significant renovation of existing retail space, upgrading common areas, and the phased redevelopment of apartment homes. Renovation of the common areas and retail space was completed in second quarter 2015, at a costrental rates consistent with underwriting. Based on the success of the lease-up pace and pricingfirst two towers, we commenced redevelopment of the North Tower during 2016. We will continue to evaluate the success of the redevelopment and may redevelop the fourth tower in the community.
We are redeveloping The Sterling, a 30-story building, two or three floors at a time, and at December 31, 2016, we had completed redevelopment of 472 of the 534 apartment homes that have beenin The Sterling on schedule and at a cost consistent with underwriting. We had leased 92% of the completed Aimco approved thehomes at rental rates in line with underwriting.
During 2016, we began redevelopment of four communities with an additional five floors, containing 130 apartment homes. The estimatedaggregate expected net investment forof approximately $81.4 million. These redevelopments consist of the additionalfollowing:
Bay Parc Plaza, a 471 apartment home community located in Miami, Florida. This phase of redevelopment includes improvements to lobby areas, redesign of the retail space, updates to the landscaping and expansion of the pool deck;
The Palazzo at Park La Brea, a 521 apartment home community located in the Mid-Wilshire district of Los Angeles, California. This phase of redevelopment includes the renovation of 389 apartment homes is $13 million. Aton the end of fourth quarter, 58%first three floors, or 75% of the 409homes in the community. The redevelopment also includes enhancements to the corridors on these floors. As of December 31, 2016, 123 of the 389 apartment homes approved for redevelopment were complete,completed at a cost consistent with underwriting and as of the end of January 2016, we had leased 97%79% of the completed homes were leased at rates ahead of underwriting;
Saybrook Pointe, a 324 apartment home community located in San Jose, California. Redevelopment of this community includes redesigned kitchens and open living space within the apartment homes; and
Yorktown, a 364 apartment home community located in Lombard, Illinois. Redevelopment of Yorktown will include upgrading apartment homes, with rents above underwritingexpansion of the fitness center and had signed leases for 84% renovation of the 19,845 square feet of retail space at rents above underwriting.common areas.
During the year ended December 31, 2015,2016, we invested $115.6$31.8 million in our development, projects. This included an investment of $99.7 millionprimarily in the developmentcompletion of One Canal in the historic Bulfinch Triangle neighborhoodBoston. Lease-up is nearing completion, with 86% of Boston’s West End. One Canal will include 310the apartment homes and 22,000 square feet of commercial space. During the three months ended December 31, 2015, we approved a $5.0 million increase in scope, comprised of additional tenant improvements, enhanced penthouse units, improved kitchen layouts and common area enhancements. The additional tenant improvements are based on the execution of a 15-year lease for all of the commercial space. This lease commences in Spring 2016, approximately three and a half years earlier than contemplated in the project underwriting. We anticipate the completion of construction in April, with the commencement of leasing shortly thereafter. Our investment in One Canal has been and will be funded in part by a $114.0 million non-recourse property loan, of which $27.8 million was available to drawoccupied at December 31, 2015.
Our development spending during the year ended December 31, 2015, also included $15.9 million2016, at Vivo, the eight-story, 91-apartment home near Kendall Square in Cambridge, Massachusetts, under construction at the time we acquired it during the second quarter of 2015. Vivo is located two blocks from Axiom Apartment Homes, which we also acquired during the second quarter of 2015, and is contiguous to a large life science complex now under construction, the completion of which is planned for late spring or early summer 2016. At closing, we paid $27.9 million and agreed to fund the remaining construction costs. We expect a total investment of $45.0 million in this community, of which $43.8 million has been invested through December 31, 2015. Construction was completed during the third quarter, in linerental rates consistent with plan. Leasing activity during the fourth quarter was in-line with underwriting. Amenity finishes, including completion of a fitness center and finishes to an outdoor rooftop terrace, are scheduled to be completed in the summer of 2016.
We expect our total redevelopment and development spending to range from $180$100 million to $220$200 million for the year ending December 31, 2016.2017.
Financing Activities
For the year ended December 31, 2015,2016, our net cash used in financing activities of $167.2$269.5 million was primarily attributed to principal payments on property loans, dividends paid to common security holders, and distributions paid to noncontrolling interests and redemptions of preferred stock, partially offset by proceeds from our issuance of common securities and proceeds fromnon-recourse property loans.debt.

40


Principal payments on property loans during the year totaled $514.3$371.9 million, and included $79.8consisting of $79.6 million of scheduled principal amortization $166.0and repayments of $292.3 million. Proceeds from non-recourse property debt borrowings during the period consisted of the closing of $393.5 million fixed-rate, amortizing, non-recourse property loans with a weighted average term of 9.4 years, in addition to $24.2 million for construction draws related to the expansion of our unencumbered asset pool, and the remainder primarily related to debt payoffs in connection with dispositions.One Canal. We like the discipline of financing our investments in real estate through the use of amortizing, fixed-rate non-recourse property debt, as the amortization gradually reduces our leverage, reduces our refunding risk and the fixed-rate provides a hedge against increases in interest rates. Our net cash used in financing activities also includes $252.6 million of payments to equity holders, as further detailed in the table below.

Equity and Partners’ Capital Transactions
The following table presents our dividend and distribution activity, which is included in our net cash used in financing activities during the year ended December 31, 20152016 (dollars in thousands):
20152016
Cash distributions paid by the Aimco Operating Partnership to holders of noncontrolling interests in consolidated real estate partnerships$43,757
$18,253
Cash distributions paid by the Aimco Operating Partnership to preferred unitholders (1)18,042
17,253
Cash distributions paid by the Aimco Operating Partnership to common unitholders (2)190,783
216,493
Total cash distributions paid by the Aimco Operating Partnership$252,582
$251,999
  
Cash distributions paid by Aimco to holders of noncontrolling interests in consolidated real estate partnerships$43,757
$18,253
Cash distributions paid by Aimco to holders of common OP Units13,644
Cash distributions paid by Aimco to holders of OP Units17,453
Cash dividends paid by Aimco to preferred stockholders11,099
10,014
Cash dividends paid by Aimco to common stockholders184,082
206,279
Total cash dividends and distributions paid by Aimco$252,582
$251,999
  
(1)$11.110.0 million represented distributions to Aimco, and $6.9$7.2 million represented distributions paid to holders of OP Units.
(2)$184.1206.3 million represented distributions to Aimco, and $6.7$10.2 million represented distributions paid to holders of OP Units.

Pursuant to an At-The-Market offering program active at December 31, 2015,2016, Aimco has the capacity to issue up to 3.5 million shares of its Common Stock. In the event of any such issuances, Aimco would contribute the net proceeds to the Aimco Operating Partnership in exchange for a number of partnership common units equal to the number of shares issued and sold. Additionally, the Aimco Operating Partnership and Aimco have a shelf registration statement that provides for the issuance of debt securities by the Aimco Operating Partnership and equity securities by Aimco.
During January 2015, Aimco completed a public offering resulting in the sale of 9,430,000 shares of its Common Stock, par value $0.01 per share, in an underwritten public offering, generating net proceeds of approximately $366.6 million.  Aimco contributed the net proceeds from the sale of Common Stock to the Aimco Operating Partnership in exchange for a number of common partnership units equal to the number of shares of Common Stock issued.
Contractual Obligations
This table summarizes information contained elsewhere in this Annual Report on Form 10-K regarding payments due under contractual obligations and commitments as of December 31, 20152016 (in thousands):
 TotalLess than One Year2-3 Years4-5 YearsMore than Five Years
Long-term debt (1)$3,846,160
$325,973
$682,639
$952,213
$1,885,335
Interest related to long-term debt (2)1,082,198
190,390
320,217
219,171
352,420
Office space lease obligations6,863
3,061
3,423
379

Ground lease obligations (3)72,987
795
1,890
2,426
67,876
Construction obligations (4)110,000
100,286
9,714


Total$5,118,208
$620,505
$1,017,883
$1,174,189
$2,305,631
      
 TotalLess than One Year1-3 Years3-5 YearsMore than Five Years
Non-recourse property debt (1)$3,889,647
$346,519
$856,830
$1,189,941
$1,496,357
Revolving credit facility borrowings (2)17,930



17,930
Interest related to long-term debt (3)1,052,441
185,303
300,991
185,360
380,787
Office space lease obligations4,234
2,559
1,522
153

Ground lease obligations (4)88,057
1,093
2,486
3,094
81,384
Construction obligations (5)89,488
83,498
5,990


Total$5,141,797
$618,972
$1,167,819
$1,378,548
$1,976,458
      
(1)Includes scheduled principal amortization and maturity payments related to our non-recourse property debt. Excludes long-term debt.debt collateralized by assets classified as held for sale as of December 31, 2016.
(2)Includes outstanding borrowings on our revolving credit facility assuming repayment at the contractual maturity date. Our revolving credit facility is subject to an annual commitment fee (0.25% of aggregate commitments), which is not included in the amounts above.
(3)
Includes interest related to both fixed ratefixed-rate and variable-rate non-recourse property debt and our variable rate debt.revolving credit facility borrowings. Interest related to variable ratevariable-rate debt is estimated based on the rate effective at December 31, 2015.2016. Refer to Note 54 to the consolidated financial statements in Item 8 for a description of average interest rates associated with our debt.
(3)(4)These ground leases matureexpire in years ranging from 20372056 to 2084.2087.

41


(4)(5)
Represents estimated obligations pursuant to construction contracts related to our redevelopment, development redevelopment and other capital projects.spending. Refer to Note 75 to the consolidated financial statements in Item 8 for additional information regarding these obligations.
In addition to the amounts presented in the table above, at December 31, 2015,2016, we had $159.8$125.0 million (liquidation value) of Aimco’s perpetual preferred stock outstanding with a weighted averagean annual dividend yield of 6.9% and $87.9$103.2 million (liquidation value) of redeemable preferred OP Units of the Aimco Operating Partnership outstanding with annual distribution yields ranging from 1.9%1.92% to 8.8%. The dividends and distributions that accrue on the perpetual preferred stock and redeemable preferred OP Units are cumulative. As of December 31, 2015, we had no accrued dividends or distributions related to these securities.cumulative and are paid quarterly.

Additionally, we may enter into commitments to purchase goods and services in connection with the operations of our apartment communities. Those commitments generally have terms of one year or less and reflect expenditure levels comparable to our historical expenditures.
Future Capital Needs
In addition to the items set forth in “Contractual Obligations” above, we expect to fund any future acquisitions, redevelopment, and development projects, and other capital spending principally with proceeds from apartment community sales, (including tax-free exchange proceeds), short-term borrowings, debt and equity financing and operating cash flows. Our near-term business plan does not contemplate the issuance of equity.
Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Our primary market risk exposure is to the availability of property debt or other cash sources to refund maturing property debt and to changes in base interest rates and credit risk spreads. Our liabilities are not subject to any other material market rate or price risks. We use predominantly long-term,long-dated, fixed-rate, amortizing, non-recourse property debt in order to avoid the refunding and repricing risks of short-term borrowings. We use short-term debt financing and working capital primarily to fund short-term uses and acquisitions and generally expect to refinance such borrowings with cash from operating activities, proceeds from apartment community sales, long-term debt or equity financings. We make limited use of other derivative financial instruments and we do not use them for trading or other speculative purposes.
As of December 31, 2015,2016, on a consolidated basis, we had approximately $111.9$83.6 million of variable-rate indebtedness outstanding.property-level debt outstanding and $17.9 million of variable-rate borrowings under our revolving credit facility. We estimate that an increase in 30-day LIBOR of 100 basis points with constant credit risk spreads would result inreduce our net income, the amount of net income attributable to Aimco common stockholders and the amount of net income attributable to our common security holders (including Aimco common stockholders and the Aimco Operating Partnership’s common unitholders) being reduced (or the amounts of net loss and net loss attributable to our common equity holders being increased)unitholders by approximately $0.9 million, on an annual basis.
At December 31, 2015,2016, we had approximately $137.7$131.2 million in cash and cash equivalents and restricted cash, a portion of which bear interest at variable rates and may mitigate the effect of an increase in variable rates on our variable-rate indebtednessdebt discussed above.
We estimate the fair value for our debt instruments as described in Note 611 to the consolidated financial statements in Item 8. The estimated aggregate fair value of our consolidated total indebtednessdebt (inclusive of outstanding borrowings under our revolving credit facility) was approximately $4.0 billion at December 31, 2015.2016, inclusive of a $63.2 million mark-to-market liability (a decrease of $56.6 million as compared to the mark-to-market liability at December 31, 2015). The combined carrying value of our consolidated debt (excluding unamortized debt issue costs) was $3.9 billion at December 31, 2015.2016. If market rates for our fixed-rate debt were higher by 100 basis points with constant credit risk spreads, the estimated fair value of our debt discussed above would have decreased from $4.0 billion to $3.9$3.8 billion. If market rates for our debt discussed above were lower by 100 basis points with constant credit risk spreads, the estimated fair value of our fixed-rate debt would have increased from $4.0 billion to $4.1 billion.
Item 8. Financial Statements and Supplementary Data
The independent registered public accounting firm’s reports, consolidated financial statements and schedule listed in the accompanying index“Index to Financial Statements” on page F-1 of this Annual Report are filed as part of this report and incorporated herein by this reference. See “Index to Financial Statements” on page F-1 of this Annual Report.
Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure
None.

42



Item 9A. Controls and Procedures
Aimco
Disclosure Controls and Procedures
Aimco’s management, with the participation of Aimco’s chief executive officer and chief financial officer, has evaluated the effectiveness of its disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”))Act), as of the end of the period covered by this report. Based on such evaluation, Aimco’s chief executive officer and chief financial officer have concluded that, as of the end of such period, Aimco’s disclosure controls and procedures are effective.
Management’s Report on Internal Control Over Financial Reporting
Aimco’s management is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rule 13a-15(f) and 15d-15(f) under the Exchange Act as a process designed by, or under the supervision of, our principal executive and principal financial officers and effected by our Board of Directors, management and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles and includes those policies and procedures that:
pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of assets;
provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures are being made only in accordance with authorizations of our management and directors; and
provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
Management assessed the effectiveness of Aimco’s internal control over financial reporting as of December 31, 2015.2016. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework (2013 Framework).
Based on their assessment, management concluded that, as of December 31, 2015,2016, Aimco’s internal control over financial reporting is effective.
Aimco’s independent registered public accounting firm has issued an attestation report on Aimco’s internal control over financial reporting.
Changes in Internal Control Over Financial Reporting
There has been no change in Aimco’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the fourth quarter of 20152016 that has materially affected, or is reasonably likely to materially affect, Aimco’s internal control over financial reporting.


43


Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of
Apartment Investment and Management Company
We have audited Apartment Investment and Management Company’s (the “Company”) internal control over financial reporting as of December 31, 2015,2016, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework) (the COSO criteria). The Company’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2015,2016, based on the COSO criteria.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of the Company as of December 31, 20152016 and 2014,2015, and the related consolidated statements of operations, comprehensive income, equity, and cash flows for each of the three years in the period ended December 31, 2015,2016, and our report dated February 26, 201624, 2017 expressed an unqualified opinion thereon.
/s/ ERNST & YOUNG LLP

Denver, Colorado
February 26, 201624, 2017


44


The Aimco Operating Partnership
Disclosure Controls and Procedures
The Aimco Operating Partnership’s management, with the participation of the chief executive officer and chief financial officer of Aimco, who are the equivalent of the Aimco Operating Partnership’s chief executive officer and chief financial officer, respectively, has evaluated the effectiveness of the Aimco Operating Partnership’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”))Act) as of the end of the period covered by this report. Based on such evaluation, the chief executive officer and chief financial officer of Aimco have concluded that, as of the end of such period, the Aimco Operating Partnership’s disclosure controls and procedures are effective.
Management’s Report on Internal Control Over Financial Reporting
Management of the Aimco Operating Partnership is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rule 13a-15(f) and 15d-15(f) under the Exchange Act as a process designed by, or under the supervision of, our principal executive and principal financial officers and effected by our Board of Directors, management and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles and includes those policies and procedures that:
pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of assets;
provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures are being made only in accordance with authorizations of our management and directors; and
provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
Management assessed the effectiveness of the Aimco Operating Partnership’s internal control over financial reporting as of December 31, 2015.2016. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework (2013 Framework).
Based on their assessment, management concluded that, as of December 31, 2015,2016, the Aimco Operating Partnership’s internal control over financial reporting is effective.
The Aimco Operating Partnership’s independent registered public accounting firm has issued an attestation report on the Aimco Operating Partnership’s internal control over financial reporting.
Changes in Internal Control Over Financial Reporting
There has been no change in the Aimco Operating Partnership’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the fourth quarter of 20152016 that has materially affected, or is reasonably likely to materially affect, the Aimco Operating Partnership’s internal control over financial reporting.



45


Report of Independent Registered Public Accounting Firm

The Partners of
AIMCO Properties, L.P.
We have audited AIMCO Properties, L.P.’s (the “Partnership”) internal control over financial reporting as of December 31, 2015,2016, based on criteria established in Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework) (the COSO criteria). The Partnership’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Partnership’s internal control over financial reporting based on our audit.
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the Partnership maintained, in all material respects, effective internal control over financial reporting as of December 31, 2015,2016, based on the COSO criteria.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of the Partnership as of December 31, 20152016 and 2014,2015, and the related consolidated statements of operations, comprehensive income, partners’ capital, and cash flows for each of the three years in the period ended December 31, 2015,2016, and our report dated February 26, 201624, 2017 expressed an unqualified opinion thereon.
/s/ ERNST & YOUNG LLP

Denver, Colorado
February 26, 201624, 2017

46


Item 9B. Other Information
None.
PART IIIApartment Investment and Management Company
We have audited Apartment Investment and Management Company’s (the “Company”) internal control over financial reporting as of December 31, 2016, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework) (the COSO criteria). The Company’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2016, based on the COSO criteria.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of the Company as of December 31, 2016 and 2015, and the related consolidated statements of operations, comprehensive income, equity, and cash flows for each of the three years in the period ended December 31, 2016, and our report dated February 24, 2017 expressed an unqualified opinion thereon.
/s/ ERNST & YOUNG LLP

Denver, Colorado
Item 10. Directors, Executive Officers and Corporate GovernanceFebruary 24, 2017
Each member

The Aimco Operating Partnership
Disclosure Controls and Procedures
The Aimco Operating Partnership’s management, with the participation of the board of directorschief executive officer and chief financial officer of Aimco, also is a director ofwho are the general partnerequivalent of the Aimco Operating Partnership. The officersPartnership’s chief executive officer and chief financial officer, respectively, has evaluated the effectiveness of the Aimco Operating Partnership’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this report. Based on such evaluation, the chief executive officer and chief financial officer of Aimco are also the officershave concluded that, as of the general partnerend of such period, the Aimco Operating Partnership’s disclosure controls and procedures are effective.
Management’s Report on Internal Control Over Financial Reporting
Management of the Aimco Operating Partnership is responsible for establishing and holdmaintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rule 13a-15(f) and 15d-15(f) under the same titles. The information requiredExchange Act as a process designed by, this item for both Aimcoor under the supervision of, our principal executive and principal financial officers and effected by our Board of Directors, management and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the Aimco Operating Partnership is presented jointly underpreparation of financial statements for external purposes in accordance with generally accepted accounting principles and includes those policies and procedures that:
pertain to the captions “Boardmaintenance of Directorsrecords that, in reasonable detail, accurately and Executive Officers,” “Corporate Governance Matters - Codefairly reflect the transactions and dispositions of Ethics,” “Other Matters - Section 16(a) Beneficial Ownership Reporting Compliance,” “Corporate Governance Matters - Nominatingassets;
provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and Corporate Governance Committee,” “Corporate Governance Matters - Audit Committee”that receipts and “Corporate Governance Matters - Audit Committee Financial Expert”expenditures are being made only in accordance with authorizations of our management and directors; and
provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of assets that could have a material effect on the proxy statement for Aimco’s 2016 annual meetingfinancial statements.
Because of stockholders and is incorporated herein by reference.
Item 11. Executive Compensationits inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
The information required by this item is presented underManagement assessed the captions “Compensation Discussion & Analysis,” “Compensation and Human Resources Committee Report to Stockholders,” “Summary Compensation Table,” “Grants of Plan-Based Awards in 2015,” “Outstanding Equity Awards at Fiscal Year End 2015,” “Option Exercises and Stock Vested in 2015,” “Potential Payments Upon Termination or Change in Control” and “Corporate Governance Matters - Director Compensation” in the proxy statement for Aimco’s 2016 annual meeting of stockholders and is incorporated herein by reference.
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
The information required by this item, for both Aimco and the Aimco Operating Partnership, is presented under the captions “Security Ownership of Certain Beneficial Owners and Management” and “Securities Authorized for Issuance Under Equity Compensation Plans” in the proxy statement for Aimco’s 2016 annual meeting of stockholders and is incorporated herein by reference. In addition, as of February 25, 2016, Aimco, through its consolidated subsidiaries, held 95.2%effectiveness of the Aimco Operating Partnership’s common partnership units outstanding.
Item 13.internal control over financial reporting as of December 31, 2016. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Certain Relationships and Related Transactions, and Director IndependenceInternal Control-Integrated Framework (2013 Framework).
Based on their assessment, management concluded that, as of December 31, 2016, the Aimco Operating Partnership’s internal control over financial reporting is effective.
The information required by this item is presentedAimco Operating Partnership’s independent registered public accounting firm has issued an attestation report on the Aimco Operating Partnership’s internal control over financial reporting.
Changes in Internal Control Over Financial Reporting
There has been no change in the Aimco Operating Partnership’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the caption “Certain Relationships and Related Transactions” and “Corporate Governance Matters - IndependenceExchange Act) during the fourth quarter of Directors” in2016 that has materially affected, or is reasonably likely to materially affect, the proxy statement for Aimco’s 2016 annual meeting of stockholders and is incorporated herein by reference.
Item 14. Principal Accountant Fees and Services
The information required by this item is presented under the caption “Principal Accountant Fees and Services” in the proxy statement for Aimco’s 2016 annual meeting of stockholders and is incorporated herein by reference.
PART IV
Item 15.Exhibits and Financial Statement Schedules
(a)(1)The financial statements listed in the Index to Financial Statements on Page F-1 of this report are filed as part of this report and incorporated herein by reference.
(a)(2)The financial statement schedule listed in the Index to Financial Statements on Page F-1 of this report is filed as part of this report and incorporated herein by reference.
(a)(3)The Exhibit Index is incorporated herein by reference.

47


INDEX TO EXHIBITS (1) (2)
EXHIBIT NO.DESCRIPTION
3.1Charter (Exhibit 3.1 to Aimco’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2015, is incorporated herein by this reference)
3.2Amended and Restated Bylaws (Exhibit 3.1 to Aimco’s Current Report on Form 8-K dated January 26, 2016, is incorporated herein by this reference)
10.1Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of July 29, 1994, as amended and restated as of February 28, 2007 (Exhibit 10.1 to Aimco’s Annual Report on Form 10-K for the year ended December 31, 2006, is incorporated herein by this reference)
10.2First Amendment to Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of December 31, 2007 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated December 31, 2007, is incorporated herein by this reference)
10.3Second Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of July 30, 2009 (Exhibit 10.1 to Aimco’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2009, is incorporated herein by this reference)
10.4Third Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of September 2, 2010 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated September 3, 2010, is incorporated herein by this reference)
10.5Fourth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of July 26, 2011 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated July 26, 2011, is incorporated herein by this reference)
10.6Fifth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of August 24, 2011 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated August 24, 2011, is incorporated herein by this reference)
10.7Sixth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of December 31, 2011 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated December 31, 2011, is incorporated herein by this reference)
10.8Seventh Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of May 13, 2014 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated May 15, 2014, is incorporated herein by this reference)
10.9Eighth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of October 31, 2014 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated November 4, 2014, is incorporated herein by this reference)
10.10Senior Secured Credit Agreement, dated as of December 13, 2011, among Aimco, the Aimco Operating Partnership, AIMCO/Bethesda Holdings, Inc., the lenders from time to time party thereto, KeyBank National Association, as administrative agent, swing line lender and a letter of credit issuer, Wells Fargo Bank, N.A., as syndication agent and Bank of America, N.A. and Regions Bank, as co-documentation agents (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated December 13, 2011, is incorporated herein by this reference)
10.11First Amendment to Senior Secured Credit Agreement, dated as of April 5, 2013, by and among Aimco, the Aimco Partnership, AIMCO/Bethesda Holdings, Inc., Keybank National Association, as Agent for itself and the other lenders from time to time a party to the Senior Secured Credit Agreement (Exhibit 10.1 to Aimco’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2013, is incorporated herein by this reference)
10.12Second Amendment to Credit Agreement and Joinder to Guaranty, dated as of September 30, 2013, among Aimco, the Aimco Operating Partnership, AIMCO/Bethesda Holdings, Inc., the guarantors party thereto, the lenders party thereto and KeyBank National Association, as administrative agent (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated September 30, 2013, is incorporated herein by this reference)
10.13Master Indemnification Agreement, dated December 3, 2001, by and among Aimco, the Aimco Operating Partnership., XYZ Holdings LLC, and the other parties signatory thereto (Exhibit 2.3 to Aimco’s Current Report on Form 8-K, dated December 6, 2001, is incorporated herein by this reference)
10.14Tax Indemnification and Contest Agreement, dated December 3, 2001, by and among Aimco, National Partnership Investments, Corp., and XYZ Holdings LLC and the other parties signatory thereto (Exhibit 2.4 to Aimco’s Current Report on Form 8-K, dated December 6, 2001, is incorporated herein by this reference)
10.15Employment Contract executed on December 29, 2008, by and between the Aimco Operating Partnership and Terry Considine (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated December 29, 2008, is incorporated herein by this reference)*
10.16Apartment Investment and Management Company 1997 Stock Award and Incentive Plan (October 1999) (Exhibit 10.26 to Aimco’s Annual Report on Form 10-K for the year ended December 31, 1999, is incorporated herein by this reference)*

48


10.17Form of Restricted Stock Agreement (1997 Stock Award and Incentive Plan) (Exhibit 10.11 to Aimco’s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 1997, is incorporated herein by this reference)*
10.18Form of Incentive Stock Option Agreement (1997 Stock Award and Incentive Plan) (Exhibit 10.42 to Aimco’s Annual Report on Form 10-K for the year ended December 31, 1998, is incorporated herein by this reference)*
10.192007 Stock Award and Incentive Plan (Appendix A to Aimco’s Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on March 20, 2007 is incorporated herein by this reference)*
10.20Form of Restricted Stock Agreement (2007 Stock Award and Incentive Plan) (Exhibit 10.2 to Aimco’s Current Report on Form 8-K, dated April 30, 2007, is incorporated herein by this reference)*
10.21Form of Non-Qualified Stock Option Agreement (2007 Stock Award and Incentive Plan) (Exhibit 10.3 to Aimco’s Current Report on Form 8-K, dated April 30, 2007, is incorporated herein by this reference)*
10.222007 Employee Stock Purchase Plan (Appendix B to Aimco’s Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on March 20, 2007, is incorporated herein by this reference)*
10.232015 Stock Award and Incentive Plan (Appendix A to Aimco’s Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on March 13, 2015, is incorporated herein by this reference)*
10.24Form of Performance Restricted Stock Agreement (2015 Stock Award and Incentive Plan)
10.25Form of Restricted Stock Agreement (2015 Stock Award and Incentive Plan)
10.26Form of Non-Qualified Stock Option Agreement ( 2015 Stock Award and Incentive Plan)
21.1List of Subsidiaries
23.1Consent of Independent Registered Public Accounting Firm - Aimco
23.2Consent of Independent Registered Public Accounting Firm - Aimco Operating Partnership
31.1Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 - Aimco
31.2Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 - Aimco
31.3Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 - Aimco Operating Partnership
31.4Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 - Aimco Operating Partnership
32.1Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 - Aimco
32.2Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 - Aimco
32.3Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 - Aimco Operating Partnership
32.4Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 - Aimco Operating Partnership
99.1Agreement re: disclosure of long-term debt instruments - Aimco
99.2Agreement re: disclosure of long-term debt instruments - Aimco Operating Partnership
101XBRL (Extensible Business Reporting Language). The following materials from Aimco’s and the Aimco Operating Partnership’s combined Annual Report on Form 10-K for the year ended December 31, 2015, formatted in XBRL: (i) consolidated balance sheets; (ii) consolidated statements of operations; (iii) consolidated statements of comprehensive income; (iv) consolidated statements of equity and consolidated statements of partners’ capital; (v) consolidated statements of cash flows; (vi) notes to the consolidated financial statements; and (vii) financial statement schedule (3).
(1)Schedule and supplemental materials to the exhibits have been omitted but will be provided to the Securities and Exchange Commission upon request.
(2)The Commission file numbers for exhibits is 001-13232 (Aimco) and 0-24497 (the Aimco Operating Partnership), and all such exhibits remain available pursuant to the Records Control Schedule of the Securities and Exchange Commission.
(3)As provided in Rule 406T of Regulation S-T, this information is furnished and not filed for purposes of Sections 11 and 12 of the Securities Act of 1933 and Section 18 of the Securities Exchange Act of 1934.
*Management contract or compensatory plan or arrangement

49


SIGNATURESAimco Operating Partnership’s internal control over financial reporting.

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

APARTMENT INVESTMENT AND
MANAGEMENT COMPANY
By:/s/ TERRY CONSIDINE    
Terry Considine
Chairman of the Board and
Chief Executive Officer
Date:February 26, 2016
AIMCO PROPERTIES, L.P.
By:AIMCO-GP, Inc., its General Partner
By:/s/ TERRY CONSIDINE    
Terry Considine
Chairman of the Board and
Chief Executive Officer
Date:February 26, 2016

50


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

SignatureTitleDate
APARTMENT INVESTMENT AND MANAGEMENT COMPANY
AIMCO PROPERTIES, L.P.
By:AIMCO-GP, Inc., its General Partner
/s/ TERRY CONSIDINEChairman of the Board andFebruary 26, 2016
Terry Considine
Chief Executive Officer
(principal executive officer)
/s/ PAUL BELDINExecutive Vice President andFebruary 26, 2016
Paul Beldin
Chief Financial Officer
(principal financial officer)
/s/ ANDREW HIGDONSenior Vice President andFebruary 26, 2016
Andrew Higdon
Chief Accounting Officer
(principal accounting officer)
/s/ JAMES N. BAILEYDirectorFebruary 26, 2016
James N. Bailey
/s/ THOMAS L. KELTNERDirectorFebruary 26, 2016
Thomas L. Keltner
/s/ J. LANDIS MARTINDirectorFebruary 26, 2016
J. Landis Martin
/s/ ROBERT A. MILLERDirectorFebruary 26, 2016
Robert A. Miller
/s/ KATHLEEN M. NELSONDirectorFebruary 26, 2016
Kathleen M. Nelson
/s/ MICHAEL A. STEINDirectorFebruary 26, 2016
Michael A. Stein


51


APARTMENT INVESTMENT AND MANAGEMENT COMPANY
AIMCO PROPERTIES, L.P.


INDEX TO FINANCIAL STATEMENTS



F-1



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


The Partners of
AIMCO Properties, L.P.
We have audited AIMCO Properties, L.P.’s (the “Partnership”) internal control over financial reporting as of December 31, 2016, based on criteria established in Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework) (the COSO criteria). The Partnership’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Partnership’s internal control over financial reporting based on our audit.
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of Directorsinternal control over financial reporting, assessing the risk that a material weakness exists, testing and Stockholdersevaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the Partnership maintained, in all material respects, effective internal control over financial reporting as of December 31, 2016, based on the COSO criteria.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of the Partnership as of December 31, 2016 and 2015, and the related consolidated statements of operations, comprehensive income, partners’ capital, and cash flows for each of the three years in the period ended December 31, 2016, and our report dated February 24, 2017 expressed an unqualified opinion thereon.
/s/ ERNST & YOUNG LLP

Denver, Colorado
February 24, 2017

Item 9B. Other Information
None.
Apartment Investment and Management Company

We have audited Apartment Investment and Management Company’s (the “Company”) internal control over financial reporting as of December 31, 2016, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework) (the COSO criteria). The Company’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2016, based on the COSO criteria.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of Apartment Investment and Managementthe Company (the “Company”) as of December 31, 20152016 and 2014,2015, and the related consolidated statements of operations, comprehensive income, equity, and cash flows for each of the three years in the period ended December 31, 20152016, and our report dated February 24, 2017 expressed an unqualified opinion thereon.
/s/ ERNST & YOUNG LLP

Denver, Colorado
February 24, 2017


The Aimco Operating Partnership
Disclosure Controls and Procedures
The Aimco Operating Partnership’s management, with the participation of the chief executive officer and chief financial officer of Aimco, who are the equivalent of the Aimco Operating Partnership’s chief executive officer and chief financial officer, respectively, has evaluated the effectiveness of the Aimco Operating Partnership’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this report. Based on such evaluation, the chief executive officer and chief financial officer of Aimco have concluded that, as of the end of such period, the Aimco Operating Partnership’s disclosure controls and procedures are effective.
Management’s Report on Internal Control Over Financial Reporting
Management of the Aimco Operating Partnership is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rule 13a-15(f) and 15d-15(f) under the Exchange Act as a process designed by, or under the supervision of, our principal executive and principal financial officers and effected by our Board of Directors, management and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles and includes those policies and procedures that:
pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of assets;
provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures are being made only in accordance with authorizations of our management and directors; and
provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
Management assessed the effectiveness of the Aimco Operating Partnership’s internal control over financial reporting as of December 31, 2016. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework (2013 Framework).
Based on their assessment, management concluded that, as of December 31, 2016, the Aimco Operating Partnership’s internal control over financial reporting is effective.
The Aimco Operating Partnership’s independent registered public accounting firm has issued an attestation report on the Aimco Operating Partnership’s internal control over financial reporting.
Changes in Internal Control Over Financial Reporting
There has been no change in the Aimco Operating Partnership’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the fourth quarter of 2016 that has materially affected, or is reasonably likely to materially affect, the Aimco Operating Partnership’s internal control over financial reporting.

Report of Independent Registered Public Accounting Firm

The Partners of
AIMCO Properties, L.P.
We have audited AIMCO Properties, L.P.’s (the “Partnership”) internal control over financial reporting as of December 31, 2016, based on criteria established in Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework) (the COSO criteria). The Partnership’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Partnership’s internal control over financial reporting based on our audit.
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the Partnership maintained, in all material respects, effective internal control over financial reporting as of December 31, 2016, based on the COSO criteria.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of the Partnership as of December 31, 2016 and 2015, and the related consolidated statements of operations, comprehensive income, partners’ capital, and cash flows for each of the three years in the period ended December 31, 2016, and our report dated February 24, 2017 expressed an unqualified opinion thereon.
/s/ ERNST & YOUNG LLP

Denver, Colorado
February 24, 2017

Item 9B. Other Information
None.
PART III

Item 10. Directors, Executive Officers and Corporate Governance
Each member of the board of directors of Aimco also is a director of the general partner of the Aimco Operating Partnership. The officers of Aimco are also the officers of the general partner of the Aimco Operating Partnership and hold the same titles. The information required by this item for both Aimco and the Aimco Operating Partnership is presented jointly under the captions “Board of Directors and Executive Officers,” “Corporate Governance Matters - Code of Ethics,” “Other Matters - Section 16(a) Beneficial Ownership Reporting Compliance,” “Corporate Governance Matters - Meetings and Committees: Nominating and Corporate Governance Committee,” “Corporate Governance Matters - Meetings and Committees: Audit Committee” and “Corporate Governance Matters - Meetings and Committees: Audit Committee Financial Expert” in the proxy statement for Aimco’s 2017 annual meeting of stockholders and is incorporated herein by reference.
Item 11. Executive Compensation
The information required by this item is presented under the captions “Compensation Discussion & Analysis,” “Compensation and Human Resources Committee Report to Stockholders,” “Summary Compensation Table,” “Grants of Plan-Based Awards in 2016,” “Outstanding Equity Awards at Fiscal Year End 2016,” “Option Exercises and Stock Vested in 2016,” “Potential Payments Upon Termination or Change in Control” and “Corporate Governance Matters - Director Compensation” in the proxy statement for Aimco’s 2017 annual meeting of stockholders and is incorporated herein by reference.
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
The information required by this item, for both Aimco and the Aimco Operating Partnership, is presented under the captions “Security Ownership of Certain Beneficial Owners and Management” and “Securities Authorized for Issuance Under Equity Compensation Plans” in the proxy statement for Aimco’s 2017 annual meeting of stockholders and is incorporated herein by reference. In addition, as of February 23, 2017, Aimco, through its consolidated subsidiaries, held 95.4% of the Aimco Operating Partnership’s common partnership units outstanding.
Item 13. Certain Relationships and Related Transactions, and Director Independence
The information required by this item is presented under the caption “Certain Relationships and Related Transactions” and “Corporate Governance Matters - Independence of Directors” in the proxy statement for Aimco’s 2017 annual meeting of stockholders and is incorporated herein by reference.
Item 14. Principal Accountant Fees and Services
The information required by this item is presented under the caption “Principal Accountant Fees and Services” in the proxy statement for Aimco’s 2017 annual meeting of stockholders and is incorporated herein by reference.
PART IV
Item 15.Exhibits and Financial Statement Schedules
(a)(1)The financial statements listed in the Index to Financial Statements on Page F-1 of this report are filed as part of this report and incorporated herein by reference.
(a)(2)The financial statement schedule listed in the Index to Financial Statements on Page F-1 of this report is filed as part of this report and incorporated herein by reference.
(a)(3)The Exhibit Index is incorporated herein by reference.

INDEX TO EXHIBITS (1) (2)
EXHIBIT NO.DESCRIPTION
3.1Charter (Exhibit 3.1 to Aimco’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2016, is incorporated herein by this reference)
3.2Amended and Restated Bylaws (Exhibit 3.1 to Aimco’s Current Report on Form 8-K dated January 26, 2016, is incorporated herein by this reference)
10.1Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of July 29, 1994, as amended and restated as of February 28, 2007 (Exhibit 10.1 to Aimco’s Annual Report on Form 10-K for the year ended December 31, 2006, is incorporated herein by this reference)
10.2First Amendment to Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of December 31, 2007 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated December 31, 2007, is incorporated herein by this reference)
10.3Second Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of July 30, 2009 (Exhibit 10.1 to Aimco’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2009, is incorporated herein by this reference)
10.4Third Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of September 2, 2010 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated September 3, 2010, is incorporated herein by this reference)
10.5Fourth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of July 26, 2011 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated July 26, 2011, is incorporated herein by this reference)
10.6Fifth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of August 24, 2011 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated August 24, 2011, is incorporated herein by this reference)
10.7Sixth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of December 31, 2011 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated December 31, 2011, is incorporated herein by this reference)
10.8Seventh Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of May 13, 2014 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated May 15, 2014, is incorporated herein by this reference)
10.9Eighth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of October 31, 2014 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated November 4, 2014, is incorporated herein by this reference)
10.10Ninth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of the Aimco Operating Partnership, dated as of August 16, 2016 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated August 16, 2016, is incorporated herein by this reference)
10.11Tenth Amendment to the Fourth Amended and Restated Agreement of Limited Partnership of AIMCO Properties, L.P., dated as of January 31, 2017 (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated January 31, 2017, is incorporated herein by this reference)
10.12Amended and Restated Senior Secured Credit Agreement, dated as of December 22, 2016, among Aimco, the Aimco Operating Partnership, AIMCO/Bethesda Holdings, Inc., the lenders from time to time party thereto, KeyBank National Association, as administrative agent, swing line lender and a letter of credit issuer, Wells Fargo Bank, N.A.and PNC Bank National Association, as syndication agents and Citibank, N.A., Bank of America, N.A. and Regions Bank, as co-documentation agents (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated December 22, 2016, is incorporated herein by this reference)
10.13Master Indemnification Agreement, dated December 3, 2001, by and among Aimco, the Aimco Operating Partnership., XYZ Holdings LLC, and the other parties signatory thereto (Exhibit 10.2 to Aimco’s Current Report on Form 8-K, dated December 6, 2001, is incorporated herein by this reference)
10.14Tax Indemnification and Contest Agreement, dated December 3, 2001, by and among Aimco, National Partnership Investments, Corp., and XYZ Holdings LLC and the other parties signatory thereto (Exhibit 10.3 to Aimco’s Current Report on Form 8-K, dated December 6, 2001, is incorporated herein by this reference)
10.15Employment Contract executed on December 29, 2008, by and between the Aimco Operating Partnership and Terry Considine (Exhibit 10.1 to Aimco’s Current Report on Form 8-K, dated December 29, 2008, is incorporated herein by this reference)*
10.162007 Stock Award and Incentive Plan (Appendix A to Aimco’s Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on March 20, 2007 is incorporated herein by this reference)*
10.17Form of Restricted Stock Agreement (2007 Stock Award and Incentive Plan) (Exhibit 10.2 to Aimco’s Current Report on Form 8-K, dated April 30, 2007, is incorporated herein by this reference)*

10.18Form of Non-Qualified Stock Option Agreement (2007 Stock Award and Incentive Plan) (Exhibit 10.3 to Aimco’s Current Report on Form 8-K, dated April 30, 2007, is incorporated herein by this reference)*
10.192007 Employee Stock Purchase Plan (Appendix B to Aimco’s Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on March 20, 2007, is incorporated herein by this reference)*
10.20Apartment Investment and Management Company 2015 Stock Award and Incentive Plan (as amended and restated January 31, 2017) (Exhibit 10.2 to Aimco’s Current Report on Form 8-K, dated January 31, 2017, is incorporated herein by this reference)*
10.21Form of Performance Restricted Stock Agreement (2015 Stock Award and Incentive Plan) (Exhibit 10.24 to Aimco’s Annual Report on Form 10-K for the year ended December 31, 2015, is incorporated herein by this reference)*
10.22Form of Restricted Stock Agreement (2015 Stock Award and Incentive Plan) (Exhibit 10.25 to Aimco’s Annual Report on Form 10-K for the year ended December 31, 2015, is incorporated herein by this reference)*
10.23Form of Non-Qualified Stock Option Agreement (2015 Stock Award and Incentive Plan) (Exhibit 10.26 to Aimco’s Annual Report on Form 10-K for the year ended December 31, 2015, is incorporated herein by this reference)*
10.24Form of LTIP Unit Agreement (2015 Stock Award and Incentive Plan) (Exhibit 10.3 to Aimco’s Current Report on Form 8-K, dated January 31, 2017, is incorporated herein by this reference)*
10.25Form of Performance Vesting LTIP Unit Agreement (2015 Stock Award and Incentive Plan) (Exhibit 10.4 to Aimco’s Current Report on Form 8-K, dated January 31, 2017, is incorporated herein by this reference)*
10.26Form of Non-Qualified Stock Option Agreement (2015 Stock Award and Incentive Plan)*
21.1List of Subsidiaries
23.1Consent of Independent Registered Public Accounting Firm - Aimco
23.2Consent of Independent Registered Public Accounting Firm - Aimco Operating Partnership
31.1Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 - Aimco
31.2Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 - Aimco
31.3Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 - Aimco Operating Partnership
31.4Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 - Aimco Operating Partnership
32.1Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 - Aimco
32.2Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 - Aimco
32.3Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 - Aimco Operating Partnership
32.4Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 - Aimco Operating Partnership
99.1Agreement regarding disclosure of long-term debt instruments - Aimco
99.2Agreement regarding disclosure of long-term debt instruments - Aimco Operating Partnership
101XBRL (Extensible Business Reporting Language). The following materials from Aimco’s and the Aimco Operating Partnership’s combined Annual Report on Form 10-K for the year ended December 31, 2016, formatted in XBRL: (i) consolidated balance sheets; (ii) consolidated statements of operations; (iii) consolidated statements of comprehensive income; (iv) consolidated statements of equity and consolidated statements of partners’ capital; (v) consolidated statements of cash flows; (vi) notes to the consolidated financial statements; and (vii) financial statement schedule (3).
(1)Schedule and supplemental materials to the exhibits have been omitted but will be provided to the Securities and Exchange Commission upon request.
(2)The Commission file numbers for exhibits is 001-13232 (Aimco) and 0-24497 (the Aimco Operating Partnership), and all such exhibits remain available pursuant to the Records Control Schedule of the Securities and Exchange Commission.
(3)As provided in Rule 406T of Regulation S-T, this information is furnished and not filed for purposes of Sections 11 and 12 of the Securities Act of 1933 and Section 18 of the Securities Exchange Act of 1934.
*Management contract or compensatory plan or arrangement
Item 16. Form 10-K Summary
None.

SIGNATURES

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

APARTMENT INVESTMENT AND
MANAGEMENT COMPANY
By:/s/ TERRY CONSIDINE    
Terry Considine
Chairman of the Board and
Chief Executive Officer
Date:February 24, 2017
AIMCO PROPERTIES, L.P.
By:AIMCO-GP, Inc., its General Partner
By:/s/ TERRY CONSIDINE    
Terry Considine
Chairman of the Board and
Chief Executive Officer
Date:February 24, 2017

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

SignatureTitleDate
APARTMENT INVESTMENT AND MANAGEMENT COMPANY
AIMCO PROPERTIES, L.P.
By: AIMCO-GP, Inc., its General Partner
/s/ TERRY CONSIDINEChairman of the Board andFebruary 24, 2017
Terry Considine
Chief Executive Officer
(principal executive officer)
/s/ PAUL BELDINExecutive Vice President andFebruary 24, 2017
Paul Beldin
Chief Financial Officer
(principal financial officer)
/s/ ANDREW HIGDONSenior Vice President andFebruary 24, 2017
Andrew Higdon
Chief Accounting Officer
(principal accounting officer)
/s/ THOMAS L. KELTNERDirectorFebruary 24, 2017
Thomas L. Keltner
/s/ J. LANDIS MARTINDirectorFebruary 24, 2017
J. Landis Martin
/s/ ROBERT A. MILLERDirectorFebruary 24, 2017
Robert A. Miller
/s/ KATHLEEN M. NELSONDirectorFebruary 24, 2017
Kathleen M. Nelson
/s/ MICHAEL A. STEINDirectorFebruary 24, 2017
Michael A. Stein
/s/ NINA A. TRANDirectorFebruary 24, 2017
Nina A. Tran


APARTMENT INVESTMENT AND MANAGEMENT COMPANY
AIMCO PROPERTIES, L.P.


INDEX TO FINANCIAL STATEMENTS



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


The Board of Directors and Stockholders of
Apartment Investment and Management Company

We have audited the accompanying consolidated balance sheets of Apartment Investment and Management Company (the “Company”) as of December 31, 2016 and 2015, and the related consolidated statements of operations, comprehensive income, equity and cash flows for each of the three years in the period ended December 31, 2016. Our audits also included the financial statement schedule listed in the accompanying Index to Financial Statements. These financial statements and schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements and schedule based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of the Company at December 31, 20152016 and 2014,2015, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2015,2016, in conformity with U.S. generally accepted accounting principles. Also, in our opinion, the related financial statement schedule, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information set forth therein.
As discussed in Note 2 to the consolidated financial statements, the Company changed its method for reporting of discontinued operations effective January 1, 2014.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Company’s internal control over financial reporting as of December 31, 2015,2016, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework) and our report dated February 26, 2016,24, 2017, expressed an unqualified opinion thereon.    
/s/ ERNST & YOUNG LLP
Denver, Colorado
February 26, 201624, 2017


F-2


APARTMENT INVESTMENT AND MANAGEMENT COMPANY
CONSOLIDATED BALANCE SHEETS
As of December 31, 20152016 and 20142015
(In thousands, except share data)

2015 20142016 2015
ASSETS      
Buildings and improvements$6,446,326
 $6,259,318
$6,627,374
 $6,446,326
Land1,861,157
 1,885,640
1,858,792
 1,861,157
Total real estate8,307,483
 8,144,958
8,486,166
 8,307,483
Accumulated depreciation(2,778,022) (2,672,179)(2,730,758) (2,778,022)
Net real estate ($335,129 and $360,160 related to VIEs)5,529,461
 5,472,779
Cash and cash equivalents ($18,852 and $17,108 related to VIEs)50,789
 28,971
Restricted cash ($33,835 and $36,196 related to VIEs)86,956
 91,445
Other assets ($168,519 and $182,108 related to VIEs)473,918
 476,727
Net real estate5,755,408
 5,529,461
Cash and cash equivalents61,244
 50,789
Restricted cash69,906
 86,956
Other assets344,915
 448,405
Assets held for sale3,070
 27,106
1,345
 3,070
Total assets$6,144,194
 $6,097,028
$6,232,818
 $6,118,681
LIABILITIES AND EQUITY      
Non-recourse property debt ($325,203 and $336,471 related to VIEs)$3,846,160
 $4,022,809
Non-recourse property debt, net$3,866,702
 $3,822,141
Revolving credit facility borrowings27,000
 112,330
17,930
 27,000
Total indebtedness3,873,160
 4,135,139
3,884,632
 3,849,141
Accounts payable36,123
 41,919
36,677
 36,123
Accrued liabilities and other ($173,689 and $135,644 related to VIEs)318,975
 279,077
Accrued liabilities and other212,318
 317,481
Deferred income64,052
 81,882
49,366
 64,052
Liabilities related to assets held for sale53
 28,969
1,658
 53
Total liabilities4,292,363
 4,566,986
4,184,651
 4,266,850
Preferred noncontrolling interests in Aimco Operating Partnership87,926
 87,937
Commitments and contingencies (Note 7)
 
Preferred noncontrolling interests in Aimco Operating Partnership (Note 7)103,201
 87,926
Commitments and contingencies (Note 5)
 
Equity:      
Perpetual Preferred Stock (Note 9)159,126
 186,126
Common Stock, $0.01 par value, 500,787,260 shares authorized, 156,326,416 and 146,403,274 shares issued/outstanding at December 31, 2015 and 2014, respectively1,563
 1,464
Perpetual Preferred Stock (Note 6)125,000
 159,126
Common Stock, $0.01 par value, 500,787,260 shares authorized, 156,888,381 and 156,326,416 shares issued/outstanding at December 31, 2016 and 2015, respectively1,569
 1,563
Additional paid-in capital4,064,659
 3,696,143
4,051,722
 4,064,659
Accumulated other comprehensive loss(6,040) (6,456)
Accumulated other comprehensive income (loss)1,011
 (6,040)
Distributions in excess of earnings(2,596,917) (2,649,542)(2,385,399) (2,596,917)
Total Aimco equity1,622,391
 1,227,735
1,793,903
 1,622,391
Noncontrolling interests in consolidated real estate partnerships151,365
 233,296
151,121
 151,365
Common noncontrolling interests in Aimco Operating Partnership(9,851) (18,926)(58) (9,851)
Total equity1,763,905
 1,442,105
1,944,966
 1,763,905
Total liabilities and equity$6,144,194
 $6,097,028
$6,232,818
 $6,118,681











See notes to the consolidated financial statements.

F-3


APARTMENT INVESTMENT AND MANAGEMENT COMPANY
CONSOLIDATED STATEMENTS OF OPERATIONS
For the Years Ended December 31, 2016, 2015, 2014 and 20132014
(In thousands, except per share data)

2015 2014 20132016 2015 2014
REVENUES:          
Rental and other property revenues$956,954
 $952,831
 $939,231
$974,531
 $956,954
 $952,831
Tax credit and asset management revenues24,356
 31,532
 34,822
21,323
 24,356
 31,532
Total revenues981,310
 984,363
 974,053
995,854
 981,310
 984,363
OPERATING EXPENSES:          
Property operating expenses359,393
 373,654
 375,710
352,427
 359,393
 373,654
Investment management expenses5,855
 7,310
 4,341
4,333
 5,855
 7,310
Depreciation and amortization306,301
 282,608
 291,910
333,066
 306,301
 282,608
Provision for real estate impairment losses
 1,820
 
General and administrative expenses43,178
 44,092
 45,670
44,937
 43,178
 44,092
Other expenses, net10,368
 12,529
 7,403
14,295
 10,368
 14,349
Total operating expenses725,095
 722,013
 725,034
749,058
 725,095
 722,013
Operating income256,215
 262,350
 249,019
246,796
 256,215
 262,350
Interest income6,949
 6,878
 17,943
7,797
 6,949
 6,878
Interest expense(199,685) (220,971) (237,048)(196,389) (199,685) (220,971)
Other, net387
 (829) 2,723
6,071
 387
 (829)
Income before income taxes and discontinued operations63,866
 47,428
 32,637
Income before income taxes and gain on dispositions64,275
 63,866
 47,428
Income tax benefit27,524
 20,047
 1,959
25,208
 27,524
 20,047
Income from continuing operations91,390
 67,475
 34,596
Income from discontinued operations, net of tax (Note 12)
 
 203,229
Gain on dispositions of real estate, net of tax (Note 12)180,593
 288,636
 
Income before gain on dispositions89,483
 91,390
 67,475
Gain on dispositions of real estate, net of tax393,790
 180,593
 288,636
Net income271,983
 356,111
 237,825
483,273
 271,983
 356,111
Noncontrolling interests:          
Net income attributable to noncontrolling interests in consolidated real estate partnerships(4,776) (24,595) (12,473)(25,256) (4,776) (24,595)
Net income attributable to preferred noncontrolling interests in Aimco Operating Partnership(6,943) (6,497) (6,423)(7,239) (6,943) (6,497)
Net income attributable to common noncontrolling interests in Aimco Operating Partnership(11,554) (15,770) (11,639)(20,368) (11,554) (15,770)
Net income attributable to noncontrolling interests(23,273) (46,862) (30,535)(52,863) (23,273) (46,862)
Net income attributable to Aimco248,710
 309,249
 207,290
430,410
 248,710
 309,249
Net income attributable to Aimco preferred stockholders(11,794) (7,947) (2,804)(11,994) (11,794) (7,947)
Net income attributable to participating securities(950) (1,082) (813)(635) (950) (1,082)
Net income attributable to Aimco common stockholders$235,966
 $300,220
 $203,673
$417,781
 $235,966
 $300,220
Earnings attributable to Aimco per common share – basic and diluted:     
Income from continuing operations$1.52
 $2.06
 $0.29
Income from discontinued operations
 
 1.11
Net income$1.52
 $2.06
 $1.40
     
Net income attributable to Aimco per common share – basic (Note 10)$2.68
 $1.52
 $2.06
Net income attributable to Aimco per common share – diluted (Note 10)$2.67
 $1.52
 $2.06
     
Weighted average common shares outstanding – basic155,177
 145,639
 145,291
156,001
 155,177
 145,639
Weighted average common shares outstanding – diluted155,570
 146,002
 145,532
156,391
 155,570
 146,002







See notes to the consolidated financial statements.

F-4


APARTMENT INVESTMENT AND MANAGEMENT COMPANY
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
For the Years Ended December 31, 2016, 2015, 2014 and 20132014
(In thousands)

2015 2014 20132016 2015 2014
          
Net income$271,983
 $356,111
 $237,825
$483,273
 $271,983
 $356,111
Other comprehensive income (loss):          
Unrealized (losses) gains on interest rate swaps(1,299) (2,306) 1,734
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss1,678
 1,685
 1,678
Unrealized gains (losses) on interest rate swaps221
 (1,299) (2,306)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive income (loss)1,586
 1,678
 1,685
Unrealized gains (losses) on debt securities classified as available-for-sale214
 (1,192) (4,188)5,855
 214
 (1,192)
Other comprehensive income (loss)593
 (1,813) (776)7,662
 593
 (1,813)
Comprehensive income272,576
 354,298
 237,049
490,935
 272,576
 354,298
Comprehensive income attributable to noncontrolling interests(23,450) (46,903) (30,819)(53,474) (23,450) (46,903)
Comprehensive income attributable to Aimco$249,126
 $307,395
 $206,230
$437,461
 $249,126
 $307,395






































See notes to the consolidated financial statements.

F-5


APARTMENT INVESTMENT AND MANAGEMENT COMPANY
CONSOLIDATED STATEMENTS OF EQUITY
For the Years Ended December 31, 2016, 2015, 2014 and 20132014
(In thousands)
 Preferred Stock Common Stock            Preferred Stock Common Stock            
 Shares Issued Amount Shares Issued Amount Additional Paid-in Capital Accumulated Other Comprehensive Loss Distributions in Excess of Earnings Total Aimco Equity Noncontrolling Interests Total EquityShares Issued Amount Shares Issued Amount Additional Paid-in Capital Accumulated Other Comprehensive Income (Loss) Distributions in Excess of Earnings Total Aimco Equity Noncontrolling Interests Total Equity
Balances at December 31, 2012 1,274
 $68,114
 145,564
 $1,456
 $3,712,684
 $(3,542) $(2,863,287) $915,425
 $239,469
 $1,154,894
Redemption of Aimco Operating Partnership units 
 
 
 
 
 
 
 
 (3,085) (3,085)
Amortization of share-based compensation cost 
 
 33
 
 5,915
 
 
 5,915
 
 5,915
Exercises of stock options 
 
 44
 
 993
 
 
 993
 
 993
Contributions from noncontrolling interests 
 
 
 
 
 
 
 
 1,630
 1,630
Effect of changes in ownership for consolidated entities 
 
 
 
 (19,805) 
 
 (19,805) 2,130
 (17,675)
Change in accumulated other comprehensive loss 
 
 
 
 
 (1,060) 
 (1,060) 284
 (776)
Other, net 
 
 276
 3
 1,552
 
 
 1,555
 693
 2,248
Net income 
 
 
 
 
 
 207,290
 207,290
 24,112
 231,402
Distributions to noncontrolling interests 
 
 
 
 
 
 
 
 (59,946) (59,946)
Common Stock dividends 
 
 
 
 
 
 (140,052) (140,052) 
 (140,052)
Preferred Stock dividends 
 
 
 
 
 
 (2,804) (2,804) 
 (2,804)
Balances at December 31, 2013 1,274
 68,114
 145,917
 1,459
 3,701,339
 (4,602) (2,798,853) 967,457
 205,287
 1,172,744
1,274
 $68,114
 145,917
 $1,459
 $3,701,339
 $(4,602) $(2,798,853) $967,457
 $205,287
 $1,172,744
Issuance of Preferred Stock 5,117
 128,012
 
 
 (4,460) 
 
 123,552
 
 123,552
5,117
 128,012
 
 
 (4,460) 
 
 123,552
 
 123,552
Repurchase of Preferred Stock 
 (10,000) 
 
 257
 
 227
 (9,516) 
 (9,516)
 (10,000) 
 
 257
 
 227
 (9,516) 
 (9,516)
Redemption of Aimco Operating Partnership units 
 
 
 
 
 
 
 
 (7,756) (7,756)
 
 
 
 
 
 
 
 (7,756) (7,756)
Amortization of share-based compensation cost 
 
 33
 
 6,139
 
 
 6,139
 
 6,139

 
 33
 
 6,139
 
 
 6,139
 
 6,139
Exercises of stock options 
 
 303
 3
 765
 
 
 768
 
 768
Contributions from noncontrolling interests 
 
 
 
 
 
 
 
 11,559
 11,559

 
 
 
 
 
 
 
 11,559
 11,559
Effect of changes in ownership for consolidated entities 
 
 
 
 (8,097) 
 
 (8,097) 8,809
 712

 
 
 
 (8,097) 
 
 (8,097) 8,809
 712
Change in accumulated other comprehensive loss 
 
 
 
 
 (1,854) 
 (1,854) 41
 (1,813)
Change in accumulated other comprehensive income (loss)
 
 
 
 
 (1,854) 
 (1,854) 41
 (1,813)
Other, net 
 
 150
 2
 200
 
 
 202
 (21) 181

 
 453
 5
 965
 
 
 970
 (21) 949
Net income 
 
 
 
 
 
 309,249
 309,249
 40,365
 349,614

 
 
 
 
 
 309,249
 309,249
 40,365
 349,614
Distributions to noncontrolling interests 
 
 
 
 
 
 
 
 (43,914) (43,914)
 
 
 
 
 
 
 
 (43,914) (43,914)
Common Stock dividends 
 
 
 
 
 
 (151,991) (151,991) 
 (151,991)
 
 
 
 
 
 (151,991) (151,991) 
 (151,991)
Preferred Stock dividends 
 
 
 
 
 
 (8,174) (8,174) 
 (8,174)
 
 
 
 
 
 (8,174) (8,174) 
 (8,174)
Balances at December 31, 2014 6,391
 186,126
 146,403
 1,464
 3,696,143
 (6,456) (2,649,542) 1,227,735
 214,370
 1,442,105
6,391
 186,126
 146,403
 1,464
 3,696,143
 (6,456) (2,649,542) 1,227,735
 214,370
 1,442,105
Issuance of Common Stock 
 
 9,430
 94
 366,486
 
 
 366,580
 
 366,580

 
 9,430
 94
 366,486
 
 
 366,580
 
 366,580
Repurchase of Preferred Stock 
 (27,000) 
 
 695
 
 (695) (27,000) 
 (27,000)
Redemption of Preferred Stock
 (27,000) 
 
 695
 
 (695) (27,000) 
 (27,000)
Redemption of Aimco Operating Partnership units 
 
 
 
 
 
 
 
 (4,181) (4,181)
 
 
 
 
 
 
 
 (4,181) (4,181)
Amortization of share-based compensation cost 
 
 27
 
 7,096
 
 
 7,096
 
 7,096

 
 27
 
 7,096
 
 
 7,096
 
 7,096
Exercises of stock options 
 
 144
 2
 265
 
 
 267
 
 267
Effect of changes in ownership for consolidated entities 
 
 
 
 (6,008) 
 
 (6,008) 4,189
 (1,819)
 
 
 
 (6,008) 
 
 (6,008) 4,189
 (1,819)
Change in accumulated other comprehensive loss 
 
 
 
 
 416
 
 416
 177
 593
Change in accumulated other comprehensive income (loss)
 
 
 
 
 416
 
 416
 177
 593
Other, net 
 
 322
 3
 (18) 
 100
 85
 
 85

 
 466
 5
 247
 
 100
 352
 
 352
Net income 
 
 
 
 
 
 248,710
 248,710
 16,330
 265,040

 
 
 
 
 
 248,710
 248,710
 16,330
 265,040
Distributions to noncontrolling interests 
 
 
 
 
 
 
 
 (89,371) (89,371)
 
 
 
 
 
 
 
 (89,371) (89,371)
Common Stock dividends 
 
 
 
 
 
 (184,391) (184,391) 
 (184,391)
 
 
 
 
 
 (184,391) (184,391) 
 (184,391)
Preferred Stock dividends 
 
 
 
 
 
 (11,099) (11,099) 
 (11,099)
 
 
 
 
 
 (11,099) (11,099) 
 (11,099)
Balances at December 31, 2015 6,391
 $159,126
 156,326
 $1,563
 $4,064,659
 $(6,040) $(2,596,917) $1,622,391
 $141,514
 $1,763,905
6,391
 159,126
 156,326
 1,563
 4,064,659
 (6,040) (2,596,917) 1,622,391
 141,514
 1,763,905
Redemption of Preferred Stock(1,391) (34,126) 
 
 1,307
 
 (1,980) (34,799) 
 (34,799)
Redemption of Aimco Operating Partnership units
 
 
 
 
 
 
 
 (10,819) (10,819)
Amortization of share-based compensation cost
 
 31
 
 8,610
 
 
 8,610
 
 8,610
Effect of changes in ownership for consolidated entities
 
 
 
 (26,171) 
 
 (26,171) 10,107
 (16,064)
Change in accumulated other comprehensive income (loss)
 
 
 
 
 7,051
 
 7,051
 611
 7,662
Other, net
 
 531
 6
 3,317
 
 
 3,323
 
 3,323
Net income
 
 
 
 
 
 430,410
 430,410
 45,624
 476,034
Distributions to noncontrolling interests
 
 
 
 
 
 
 
 (35,974) (35,974)
Common Stock dividends
 
 
 
 
 
 (206,898) (206,898) 
 (206,898)
Preferred Stock dividends
 
 
 
 $
 
 (10,014) (10,014) 
 (10,014)
Balances at December 31, 20165,000
 $125,000
 156,888
 $1,569
 $4,051,722
 $1,011
 $(2,385,399) $1,793,903
 $151,063
 $1,944,966




See notes to the consolidated financial statements.

F-6


APARTMENT INVESTMENT AND MANAGEMENT COMPANY
CONSOLIDATED STATEMENTS OF CASH FLOWS
For the Years Ended December 31, 2016, 2015, 2014 and 20132014
(In thousands)
2015 2014 20132016 2015 2014
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net income$271,983
 $356,111
 $237,825
$483,273
 $271,983
 $356,111
Adjustments to reconcile net income to net cash provided by operating activities:          
Depreciation and amortization306,301
 282,608
 291,910
333,066
 306,301
 282,608
Provision for real estate impairment losses
 1,820
 
Other, net(387) 829
 (2,723)
Gain on dispositions of real estate, net of tax(180,593) (288,636) 
(393,790) (180,593) (288,636)
Income tax benefit(27,524) (20,047) (1,959)(25,208) (27,524) (20,047)
Share-based compensation expense6,640
 5,781
 5,645
7,629
 6,640
 5,781
Amortization of deferred loan costs and other5,186
 3,814
 4,915
Adjustments to net income from discontinued operations
 
 (186,068)
Amortization of debt issue costs and other5,060
 5,186
 3,814
Other, net(6,071) (387) 2,649
Changes in operating assets and operating liabilities:          
Accounts receivable and other assets619
 9,039
 4,592
(20,680) 619
 9,039
Accounts payable, accrued liabilities and other(22,334) (29,895) (28,541)(5,555) (22,334) (29,895)
Total adjustments87,908
 (34,687) 87,771
(105,549) 87,908
 (34,687)
Net cash provided by operating activities359,891
 321,424
 325,596
377,724
 359,891
 321,424
CASH FLOWS FROM INVESTING ACTIVITIES:          
Purchases of real estate and deposits related to purchases of real estate(169,447) (284,041) (51,291)(290,729) (169,447) (284,041)
Capital expenditures(367,180) (367,324) (350,338)(346,645) (367,180) (367,324)
Proceeds from dispositions of real estate367,571
 640,044
 357,314
535,513
 367,571
 640,044
Purchases of corporate assets(6,665) (8,479) (10,863)(7,540) (6,665) (8,479)
Purchase of property loans
 
 (119,101)
Proceeds from repayment of property loans and option value
 
 215,517
Changes in restricted cash(429) 26,315
 3,003
1,374
 (429) 26,315
Other investing activities5,253
 7,163
 20,951
10,254
 5,253
 7,163
Net cash (used in) provided by investing activities(170,897) 13,678
 65,192
(97,773) (170,897) 13,678
CASH FLOWS FROM FINANCING ACTIVITIES:          
Proceeds from non-recourse property debt352,602
 188,503
 232,965
417,714
 352,602
 188,503
Principal repayments on non-recourse property debt(514,294) (513,599) (472,276)(371,947) (514,294) (513,599)
Net (repayments) borrowings on revolving credit facility(85,330) 61,930
 50,400
(9,070) (85,330) 61,930
Proceeds from issuance of Common Stock366,580
 
 

 366,580
 
Proceeds from issuance of Preferred Stock
 123,551
 

 
 123,551
Redemptions and repurchases of Preferred Stock(27,000) (9,516) 
(34,799) (27,000) (9,516)
Proceeds from Common Stock option exercises
 768
 993
Payment of dividends to holders of Preferred Stock(11,099) (7,073) (2,804)(10,014) (11,099) (7,073)
Payment of dividends to holders of Common Stock(184,082) (152,002) (140,052)(206,279) (184,082) (152,002)
Payment of distributions to noncontrolling interests(57,401) (49,972) (63,766)(35,706) (57,401) (49,972)
Purchases of noncontrolling interests in consolidated real estate partnerships
 
 (16,775)
Purchases and redemptions of noncontrolling interests(26,485) (4,517) (8,178)
Other financing activities(7,152) (4,472) (8,135)7,090
 (2,635) 4,474
Net cash used in financing activities(167,176) (361,882) (419,450)(269,496) (167,176) (361,882)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS21,818
 (26,780) (28,662)10,455
 21,818
 (26,780)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD28,971
 55,751
 84,413
50,789
 28,971
 55,751
CASH AND CASH EQUIVALENTS AT END OF PERIOD$50,789
 $28,971
 $55,751
$61,244
 $50,789
 $28,971











See notes to the consolidated financial statements.

F-7


APARTMENT INVESTMENT AND MANAGEMENT COMPANY
CONSOLIDATED STATEMENTS OF CASH FLOWS
For the Years Ended December 31, 2016, 2015, 2014 and 20132014
(In thousands)

2015 2014 20132016 2015 2014
SUPPLEMENTAL CASH FLOW INFORMATION:          
Interest paid$207,087
 $231,887
 $273,635
$200,278
 $207,087
 $231,887
Cash paid for income taxes2,033
 1,657
 629
2,152
 2,033
 1,657
Non-cash transactions associated with the acquisition or disposition of real estate:          
Non-recourse property debt assumed in connection with our acquisition of real estate
 65,200
 14,767

 
 65,200
Non-recourse property debt assumed by buyer in connection with our disposition of real estate6,068
 58,410
 126,663

 6,068
 58,410
Non-recourse, subordinate debt of the disposed legacy asset management business forgiven in connection with the disposition of real estate
 
 8,149
Issuance of preferred OP Units in connection with acquisition of real estate
 9,117
 
17,000
 
 9,117
Other non-cash investing and financing transactions:          
Issuance of common OP Units for acquisition of noncontrolling interests in consolidated real estate partnerships
 
 416
Accrued capital expenditures43,725
 45,701
 45,571
Accrued dividends on TSR restricted stock (Note 11)309
 
 
Accrued capital expenditures (at end of period)35,594
 43,725
 45,701
Accrued dividends on TSR restricted stock (at end of period) (Note 8)927
 309
 





































See notes to the consolidated financial statements.

F-8



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


The Partners of
AIMCO Properties, L.P.
 
We have audited the accompanying consolidated balance sheets of AIMCO Properties, L.P. (the “Partnership”) as of December 31, 20152016 and 2014,2015, and the related consolidated statements of operations, comprehensive income, partners’ capital and cash flows for each of the three years in the period ended December 31, 2015.2016. Our audits also included the financial statement schedule listed in the accompanying Index to Financial Statements. These financial statements and schedule are the responsibility of the Partnership’s management. Our responsibility is to express an opinion on these financial statements and schedule based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of the Partnership at December 31, 20152016 and 2014,2015, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2015,2016, in conformity with U.S. generally accepted accounting principles. Also, in our opinion, the related financial statement schedule, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information set forth therein.
As discussed in Note 2 to the consolidated financial statements, the Partnership changed its method for reporting of discontinued operations effective January 1, 2014.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Partnership’s internal control over financial reporting as of December 31, 2015,2016, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework) and our report dated February 26, 2016,24, 2017, expressed an unqualified opinion thereon.    
/s/ ERNST & YOUNG LLP
Denver, Colorado
February 26, 201624, 2017





F-9


AIMCO PROPERTIES, L.P.
CONSOLIDATED BALANCE SHEETS
As of December 31, 20152016 and 20142015
(In thousands)

2015 20142016 2015
ASSETS      
Buildings and improvements$6,446,326
 $6,259,318
$6,627,374
 $6,446,326
Land1,861,157
 1,885,640
1,858,792
 1,861,157
Total real estate8,307,483
 8,144,958
8,486,166
 8,307,483
Accumulated depreciation(2,778,022) (2,672,179)(2,730,758) (2,778,022)
Net real estate ($335,129 and $360,160 related to VIEs)5,529,461
 5,472,779
Cash and cash equivalents ($18,852 and $17,108 related to VIEs)50,789
 28,971
Restricted cash ($33,835 and $36,196 related to VIEs)86,956
 91,445
Other assets ($168,519 and $182,108 related to VIEs)473,918
 476,727
Net real estate5,755,408
 5,529,461
Cash and cash equivalents61,244
 50,789
Restricted cash69,906
 86,956
Other assets344,915
 448,405
Assets held for sale3,070
 27,106
1,345
 3,070
Total assets$6,144,194
 $6,097,028
$6,232,818
 $6,118,681
LIABILITIES AND EQUITY   
Non-recourse property debt ($325,203 and $336,471 related to VIEs)$3,846,160
 $4,022,809
LIABILITIES AND PARTNERS’ CAPITAL   
Non-recourse property debt, net$3,866,702
 $3,822,141
Revolving credit facility borrowings27,000
 112,330
17,930
 27,000
Total indebtedness3,873,160
 4,135,139
3,884,632
 3,849,141
Accounts payable36,123
 41,919
36,677
 36,123
Accrued liabilities and other ($173,689 and $135,644 related to VIEs)318,975
 279,077
Accrued liabilities and other212,318
 317,481
Deferred income64,052
 81,882
49,366
 64,052
Liabilities related to assets held for sale53
 28,969
1,658
 53
Total liabilities4,292,363
 4,566,986
4,184,651
 4,266,850
Redeemable preferred units87,926
 87,937
Commitments and contingencies (Note 7)
 
Redeemable preferred units (Note 7)103,201
 87,926
Commitments and contingencies (Note 5)
 
Partners’ Capital:      
Preferred units (Note 10)159,126
 186,126
Preferred units (Note 7)125,000
 159,126
General Partner and Special Limited Partner1,463,265
 1,041,609
1,668,903
 1,463,265
Limited Partners(9,851) (18,926)(58) (9,851)
Partners’ capital attributable to the Aimco Operating Partnership1,612,540
 1,208,809
1,793,845
 1,612,540
Noncontrolling interests in consolidated real estate partnerships151,365
 233,296
151,121
 151,365
Total partners’ capital1,763,905
 1,442,105
1,944,966
 1,763,905
Total liabilities and partners’ capital$6,144,194
 $6,097,028
$6,232,818
 $6,118,681
















See notes to the consolidated financial statements.

F-10


AIMCO PROPERTIES, L.P.
CONSOLIDATED STATEMENTS OF OPERATIONS
As of December 31, 2016, 2015, 2014 and 20132014
(In thousands, except per unit data)

2015 2014 20132016 2015 2014
REVENUES:          
Rental and other property revenues$956,954
 $952,831
 $939,231
$974,531
 $956,954
 $952,831
Tax credit and asset management revenues24,356
 31,532
 34,822
21,323
 24,356
 31,532
Total revenues981,310
 984,363
 974,053
995,854
 981,310
 984,363
OPERATING EXPENSES:          
Property operating expenses359,393
 373,654
 375,710
352,427
 359,393
 373,654
Investment management expenses5,855
 7,310
 4,341
4,333
 5,855
 7,310
Depreciation and amortization306,301
 282,608
 291,910
333,066
 306,301
 282,608
Provision for real estate impairment losses
 1,820
 
General and administrative expenses43,178
 44,092
 45,670
44,937
 43,178
 44,092
Other expenses, net10,368
 12,529
 7,403
14,295
 10,368
 14,349
Total operating expenses725,095
 722,013
 725,034
749,058
 725,095
 722,013
Operating income256,215
 262,350
 249,019
246,796
 256,215
 262,350
Interest income6,949
 6,878
 17,943
7,797
 6,949
 6,878
Interest expense(199,685) (220,971) (237,048)(196,389) (199,685) (220,971)
Other, net387
 (829) 2,723
6,071
 387
 (829)
Income before income taxes and discontinued operations63,866
 47,428
 32,637
Income before income taxes and gain on dispositions64,275
 63,866
 47,428
Income tax benefit27,524
 20,047
 1,959
25,208
 27,524
 20,047
Income from continuing operations91,390
 67,475
 34,596
Income from discontinued operations, net of tax (Note 12)
 
 203,229
Gain on dispositions of real estate, net of tax (Note 12)180,593
 288,636
 
Income before gain on dispositions89,483
 91,390
 67,475
Gain on dispositions of real estate, net of tax393,790
 180,593
 288,636
Net income271,983
 356,111
 237,825
483,273
 271,983
 356,111
Net income attributable to noncontrolling interests in consolidated real estate partnerships(4,776) (24,595) (12,473)(25,256) (4,776) (24,595)
Net income attributable to the Aimco Operating Partnership267,207
 331,516
 225,352
458,017
 267,207
 331,516
Net income attributable to the Aimco Operating Partnership’s preferred unitholders(18,737) (14,444) (9,227)(19,233) (18,737) (14,444)
Net income attributable to participating securities(950) (1,082) (813)(635) (950) (1,082)
Net income attributable to the Aimco Operating Partnership’s common unitholders$247,520
 $315,990
 $215,312
$438,149
 $247,520
 $315,990
Earnings attributable to the Aimco Operating Partnership per common unit – basic and diluted:     
Income from continuing operations$1.52
 $2.06
 $0.29
Income from discontinued operations
 
 1.11
Net income$1.52
 $2.06
 $1.40
     
Net income attributable to the Aimco Operating Partnership per common unit – basic (Note 10)$2.68
 $1.52
 $2.06
Net income attributable to the Aimco Operating Partnership per common unit – diluted (Note 10)$2.67
 $1.52
 $2.06
     
Weighted average common units outstanding – basic162,834
 153,363
 153,256
163,761
 162,834
 153,363
Weighted average common units outstanding – diluted163,227
 153,726
 153,497
164,151
 163,227
 153,726










See notes to the consolidated financial statements.

F-11


AIMCO PROPERTIES, L.P.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
For the Years Ended December 31, 2016, 2015, 2014 and 20132014
(In thousands)

2015 2014 20132016 2015 2014
          
Net income$271,983
 $356,111
 $237,825
$483,273
 $271,983
 $356,111
Other comprehensive income (loss):          
Unrealized (losses) gains on interest rate swaps(1,299) (2,306) 1,734
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss1,678
 1,685
 1,678
Unrealized gains (losses) on interest rate swaps221
 (1,299) (2,306)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive income (loss)1,586
 1,678
 1,685
Unrealized gains (losses) on debt securities classified as available-for-sale214
 (1,192) (4,188)5,855
 214
 (1,192)
Other comprehensive income (loss)593
 (1,813) (776)7,662
 593
 (1,813)
Comprehensive income272,576
 354,298
 237,049
490,935
 272,576
 354,298
Comprehensive income attributable to noncontrolling interests(4,932) (24,733) (12,815)(25,516) (4,932) (24,733)
Comprehensive income attributable to the Aimco Operating Partnership$267,644
 $329,565
 $224,234
$465,419
 $267,644
 $329,565






































See notes to the consolidated financial statements.

F-12


AIMCO PROPERTIES, L.P.
CONSOLIDATED STATEMENTS OF PARTNERS’ CAPITAL
For the Years Ended December 31, 2016, 2015, 2014 and 20132014
(In thousands)
Preferred
Units
 
General Partner
and Special
Limited Partner
 Limited Partners Partners’ Capital Attributable to the Partnership Non - controlling Interests Total
Partners’ Capital
 
Preferred
Units
 
General Partner
and Special
Limited Partner
 Limited Partners Partners’ Capital Attributable to the Partnership Noncontrolling Interests Total
Partners’ Capital
Balances at December 31, 2012$68,114
 $847,311
 $(31,596) $883,829
 $271,065
 $1,154,894
 
Redemption of partnership units held by non-Aimco partners
 
 (3,085) (3,085) 
 (3,085) 
Amortization of Aimco share-based compensation
 5,915
 
 5,915
 
 5,915
 
Issuance of common partnership units to Aimco in connection with exercise of Aimco stock options
 993
 
 993
 
 993
 
Contributions from noncontrolling interests
 
 
 
 1,630
 1,630
 
Effect of changes in ownership for consolidated entities
 (19,805) 2,635
 (17,170) (505) (17,675) 
Change in accumulated other comprehensive loss
 (1,060) (58) (1,118) 342
 (776) 
Other, net
 1,555
 386
 1,941
 307
 2,248
 
Net income
 207,290
 11,639
 218,929
 12,473
 231,402
 
Distributions to noncontrolling interests
 
 
 
 (52,304) (52,304) 
Distributions to common unitholders
 (140,052) (7,642) (147,694) 
 (147,694) 
Distributions to preferred unitholders
 (2,804) 
 (2,804) 
 (2,804) 
Balances at December 31, 201368,114
 899,343
 (27,721) 939,736
 233,008
 1,172,744
 $68,114
 $899,343
 $(27,721) $939,736
 $233,008
 $1,172,744
Issuance of preferred units to Aimco128,012
 (4,460) 
 123,552
 
 123,552
 128,012
 (4,460) 
 123,552
 
 123,552
Repurchase of preferred units held by Aimco(10,000) 484
 
 (9,516) 
 (9,516) (10,000) 484
 
 (9,516) 
 (9,516)
Redemption of partnership units held by non-Aimco partners
 
 (7,756) (7,756) 
 (7,756) 
 
 (7,756) (7,756) 
 (7,756)
Amortization of Aimco share-based compensation
 6,139
 
 6,139
 
 6,139
 
 6,139
 
 6,139
 
 6,139
Issuance of common partnership units to Aimco in connection with exercise of Aimco stock options
 768
 
 768
 
 768
 
Contributions from noncontrolling interests
 
 
 
 11,559
 11,559
 
 
 
 
 11,559
 11,559
Effect of changes in ownership for consolidated entities
 (8,097) 8,888
 791
 (79) 712
 
 (8,097) 8,888
 791
 (79) 712
Change in accumulated other comprehensive loss
 (1,854) (97) (1,951) 138
 (1,813) 
Change in accumulated other comprehensive income (loss)
 (1,854) (97) (1,951) 138
 (1,813)
Other, net
 202
 
 202
 (21) 181
 
 970
 
 970
 (21) 949
Net income
 309,249
 15,770
 325,019
 24,595
 349,614
 
 309,249
 15,770
 325,019
 24,595
 349,614
Distributions to noncontrolling interests
 
 
 
 (35,904) (35,904) 
 
 
 
 (35,904) (35,904)
Distributions to common unitholders
 (151,991) (8,010) (160,001) 
 (160,001) 
 (151,991) (8,010) (160,001) 
 (160,001)
Distributions to preferred unitholders
 (8,174) 
 (8,174) 
 (8,174) 
 (8,174) 
 (8,174) 
 (8,174)
Balances at December 31, 2014186,126
 1,041,609
 (18,926) 1,208,809
 233,296
 1,442,105
 186,126
 1,041,609
 (18,926) 1,208,809
 233,296
 1,442,105
Issuance of common partnership units to Aimco
 366,580
 
 366,580
 
 366,580
 
 366,580
 
 366,580
 
 366,580
Repurchase of preferred units held by Aimco(27,000) 
 
 (27,000) 
 (27,000) 
Redemption of preferred units held by Aimco(27,000) 
 
 (27,000) 
 (27,000)
Redemption of partnership units held by non-Aimco partners
 
 (4,181) (4,181) 
 (4,181) 
 
 (4,181) (4,181) 
 (4,181)
Amortization of Aimco share-based compensation
 7,096
 
 7,096
 
 7,096
 
 7,096
 
 7,096
 
 7,096
Issuance of common partnership units to Aimco in connection with exercise of Aimco stock options
 267
 
 267
 
 267
 
Effect of changes in ownership for consolidated entities
 (6,008) 10,739
 4,731
 (6,550) (1,819) 
 (6,008) 10,739
 4,731
 (6,550) (1,819)
Change in accumulated other comprehensive loss
 416
 21
 437
 156
 593
 
Change in accumulated other comprehensive income (loss)
 416
 21
 437
 156
 593
Other, net
 85
 
 85
 

 85
 
 352
 
 352
 
 352
Net income
 248,710
 11,554
 260,264
 4,776
 265,040
 
 248,710
 11,554
 260,264
 4,776
 265,040
Distributions to noncontrolling interests
 
 
 
 (80,313) (80,313) 
 
 
 
 (80,313) (80,313)
Distributions to common unitholders
 (184,391) (9,058) (193,449) 
 (193,449) 
 (184,391) (9,058) (193,449) 
 (193,449)
Distributions to preferred unitholders
 (11,099) 
 (11,099) 
 (11,099) 
 (11,099) 
 (11,099) 
 (11,099)
Balances at December 31, 2015$159,126
 $1,463,265
 $(9,851) $1,612,540
 $151,365
 $1,763,905
 159,126
 1,463,265
 (9,851) 1,612,540
 151,365
 1,763,905
Redemption of preferred units held by Aimco(34,126) (673) 
 (34,799) 
 (34,799)
Redemption of partnership units held by non-Aimco partners
 ��
 (10,819) (10,819) 
 (10,819)
Amortization of Aimco share-based compensation
 8,610
 
 8,610
 
 8,610
Effect of changes in ownership for consolidated entities
 (26,171) 10,107
 (16,064) 
 (16,064)
Change in accumulated other comprehensive income (loss)
 7,051
 351
 7,402
 260
 7,662
Other, net
 3,323
 
 3,323
 
 3,323
Net income
 430,410
 20,368
 450,778
 25,256
 476,034
Distributions to noncontrolling interests
 
 
 
 (25,760) (25,760)
Distributions to common unitholders
 (206,898) (10,214) (217,112) 
 (217,112)
Distributions to preferred unitholders
 (10,014) 
 (10,014) 
 (10,014)
Balances at December 31, 2016$125,000
 $1,668,903
 $(58) $1,793,845
 $151,121
 $1,944,966





See notes to the consolidated financial statements.

F-13


AIMCO PROPERTIES, L.P.
CONSOLIDATED STATEMENTS OF CASH FLOWS
For the Years Ended December 31, 2016, 2015, 2014 and 20132014
(In thousands)
2015 2014 20132016 2015 2014
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net income$271,983
 $356,111
 $237,825
$483,273
 $271,983
 $356,111
Adjustments to reconcile net income to net cash provided by operating activities:          
Depreciation and amortization306,301
 282,608
 291,910
333,066
 306,301
 282,608
Provision for real estate impairment losses
 1,820
 
Other, net(387) 829
 (2,723)
Gain on dispositions of real estate, net of tax(180,593) (288,636) 
(393,790) (180,593) (288,636)
Income tax benefit(27,524) (20,047) (1,959)(25,208) (27,524) (20,047)
Share-based compensation expense6,640
 5,781
 5,645
7,629
 6,640
 5,781
Amortization of deferred loan costs and other5,186
 3,814
 4,915
Adjustments to net income from discontinued operations
 
 (186,068)
Amortization of debt issue costs and other5,060
 5,186
 3,814
Other, net(6,071) (387) 2,649
Changes in operating assets and operating liabilities:          
Accounts receivable and other assets619
 9,039
 4,592
(20,680) 619
 9,039
Accounts payable, accrued liabilities and other(22,334) (29,895) (28,541)(5,555) (22,334) (29,895)
Total adjustments87,908
 (34,687) 87,771
(105,549) 87,908
 (34,687)
Net cash provided by operating activities359,891
 321,424
 325,596
377,724
 359,891
 321,424
CASH FLOWS FROM INVESTING ACTIVITIES:          
Purchases of real estate and deposits related to purchases of real estate(169,447) (284,041) (51,291)(290,729) (169,447) (284,041)
Capital expenditures(367,180) (367,324) (350,338)(346,645) (367,180) (367,324)
Proceeds from dispositions of real estate367,571
 640,044
 357,314
535,513
 367,571
 640,044
Purchases of corporate assets(6,665) (8,479) (10,863)(7,540) (6,665) (8,479)
Purchase of property loans
 
 (119,101)
Proceeds from repayment of property loans and option value
 
 215,517
Changes in restricted cash(429) 26,315
 3,003
1,374
 (429) 26,315
Other investing activities5,253
 7,163
 20,951
10,254
 5,253
 7,163
Net cash (used in) provided by investing activities(170,897) 13,678
 65,192
(97,773) (170,897) 13,678
CASH FLOWS FROM FINANCING ACTIVITIES:          
Proceeds from non-recourse property debt352,602
 188,503
 232,965
417,714
 352,602
 188,503
Principal repayments on non-recourse property debt(514,294) (513,599) (472,276)(371,947) (514,294) (513,599)
Net (repayments) borrowings on revolving credit facility(85,330) 61,930
 50,400
(9,070) (85,330) 61,930
Proceeds from issuance of common partnership units to Aimco366,580
 
 

 366,580
 
Proceeds from issuance of preferred partnership units to Aimco
 123,551
 

 
 123,551
Redemption and repurchase of preferred partnership units from Aimco(27,000) (9,516) 
Proceeds from Aimco Common Stock option exercises
 768
 993
Redemption and repurchase of preferred units from Aimco(34,799) (27,000) (9,516)
Payment of distributions to preferred units(18,042) (13,482) (9,227)(17,253) (18,042) (13,482)
Payment of distributions to General Partner and Special Limited Partner(184,082) (152,002) (140,052)(206,279) (184,082) (152,002)
Payment of distributions to Limited Partners(6,701) (8,008) (7,642)(10,214) (6,701) (8,008)
Payment of distributions to noncontrolling interests(43,757) (35,555) (49,701)(18,253) (43,757) (35,555)
Purchases of noncontrolling interests in consolidated real estate partnerships
 
 (16,775)(13,941) (320) (101)
Other financing activities(7,152) (4,472) (8,135)(5,454) (6,832) (3,603)
Net cash used in financing activities(167,176) (361,882) (419,450)(269,496) (167,176) (361,882)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS21,818
 (26,780) (28,662)10,455
 21,818
 (26,780)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD28,971
 55,751
 84,413
50,789
 28,971
 55,751
CASH AND CASH EQUIVALENTS AT END OF PERIOD$50,789
 $28,971
 $55,751
$61,244
 $50,789
 $28,971









See notes to the consolidated financial statements.

F-14


AIMCO PROPERTIES, L.P.
CONSOLIDATED STATEMENTS OF CASH FLOWS
For the Years Ended December 31, 2016, 2015, 2014 and 20132014
(In thousands)

2015 2014 20132016 2015 2014
SUPPLEMENTAL CASH FLOW INFORMATION:          
Interest paid$207,087
 $231,887
 $273,635
$200,278
 $207,087
 $231,887
Cash paid for income taxes2,033
 1,657
 629
2,152
 2,033
 1,657
Non-cash transactions associated with the acquisition or disposition of real estate:          
Non-recourse property debt assumed in connection with our acquisition of real estate
 65,200
 14,767

 
 65,200
Non-recourse property debt assumed by buyer in connection with our disposition of real estate6,068
 58,410
 126,663

 6,068
 58,410
Non-recourse, subordinate debt of the disposed legacy asset management business forgiven in connection with the disposition of real estate
 
 8,149
Issuance of preferred OP Units in connection with acquisition of real estate
 9,117
 
17,000
 
 9,117
Other non-cash investing and financing transactions:          
Issuance of common OP Units for acquisition of noncontrolling interests in consolidated real estate partnerships
 
 416
Accrued capital expenditures43,725
 45,701
 45,571
Accrued dividends on TSR restricted stock awards (Note 11)309
 
 
Accrued capital expenditures (at end of period)35,594
 43,725
 45,701
Accrued dividends on TSR restricted stock awards (at end of period) (Note 8)927
 309
 





































See notes to the consolidated financial statements.

F-15


APARTMENT INVESTMENT AND MANAGEMENT COMPANY
AIMCO PROPERTIES, L.P.
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
December 31, 20152016

Note 1 — Organization
Apartment Investment and Management Company, or Aimco, is a Maryland corporation incorporated on January 10, 1994. Aimco is a self-administered and self-managed real estate investment trust, or REIT. AIMCO Properties, L.P., or the Aimco Operating Partnership, is a Delaware limited partnership formed on May 16, 1994, to conduct our business, which is focused on the ownership, management, redevelopment and limited development of quality apartment communities located in the largest coastal and job growth markets in the United States.
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. Aimco conducts all of its business and owns all of its assets through the Aimco Operating Partnership. Interests in the Aimco Operating Partnership that are held by limited partners other than Aimco are referred to as “OPOP Units. OP Units include common partnership units and high performance partnership units and partnership preferred units, which we refer to as common OP Units, HPUs andas well as partnership preferred units, which we refer to as preferred OP Units, respectively. We also refer to HPUs as common partnership unit equivalents.Units. At December 31, 2015,2016, after eliminations for units held by consolidated subsidiaries, the Aimco Operating Partnership had 164,179,533164,493,293 common partnership units and equivalents outstanding. At December 31, 2015,2016, Aimco owned 156,326,416156,888,381 of the common partnership units (95.2%(95.4% of the common partnership units and equivalents of the Aimco Operating Partnership) and Aimco had outstanding an equal number of shares of its Class A Common Stock, which we refer to as Common Stock.
Except as the context otherwise requires, “we,” “our” and “us” refer to Aimco, the Aimco Operating Partnership and their consolidated subsidiaries, collectively.
As of December 31, 2015,2016, we owned an equity interest in 140134 conventional apartment communities with 40,46437,922 apartment homes and 5655 affordable apartment communities with 8,6858,389 apartment homes. Of these apartment communities, we consolidated 136130 conventional apartment communities with 40,32237,780 apartment homes and 4948 affordable apartment communities with 7,9987,702 apartment homes. These conventional and affordable apartment communities generated 90% and 10%, respectively, of the proportionate property net operating income (as defined in Note 1512 and excluding amounts related to apartment communities sold or classified as held for sale) during the year ended December 31, 2015.2016.
Note 2 — Basis of Presentation and Summary of Significant Accounting Policies
Principles of Consolidation
Aimco’s accompanying consolidated financial statements include the accounts of Aimco, the Aimco Operating Partnership, and their consolidated subsidiaries. The Aimco Operating Partnership’s consolidated financial statements include the accounts of the Aimco Operating Partnership and its consolidated entities.
We consolidate all variable interest entities for which we are the primary beneficiary. Generally, a variable interest entity, or VIE, is a legal entity in which the equity investors do not have the characteristics of a controlling financial interest or the equity investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support. In determining whether we are the primary beneficiary of a VIE, we consider qualitative and quantitative factors, including, but not limited to: which activities most significantly impact the VIE’s economic performance and which party controls such activities; the amount and characteristics of our investment; the obligation or likelihood for us or other investors to provide financial support; and the similarity with and significance to our business activities and the business activities of the other investors. Significant judgments related to these determinations include estimates about the current and future fair values and performance of real estate held by these VIEs and general market conditions.
As of December 31, 2015, we were the primary beneficiary of, and therefore consolidated, 61 VIEs, which owned 47 apartment communities with 7,459 apartment homes. Substantially all of these VIEs are partnerships that operate qualifying affordable housing apartment communities and which are structured to provide for the pass-through of low-income housing tax credits and deductions to their partners. Real estate with a net book value of $335.1 million collateralized $325.2 million of debt of those VIEs. Any significant amounts of assets and liabilities related to our consolidated VIEs are identified parenthetically on our accompanying consolidated balance sheets. The creditors of the consolidated VIEs do not have recourse to our general credit.
In addition to the VIEs discussed above, at December 31, 2015, our consolidated financial statements included certain consolidated and unconsolidated VIEs that are part of the legacy asset management business we sold during 2012, which is

F-16


discussed in Note 3. The assets and liabilities related to these consolidated and unconsolidated VIEs are each condensed into single line items within other assets and accrued liabilities and other, respectively, in our consolidated balance sheets.
Generally, we consolidate real estate partnerships and other entities that are not variable interest entities when we own, directly or indirectly, a majority voting interest in the entity or are otherwise able to control the entity.subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.
Interests in the Aimco Operating Partnership that are held by limited partners other than Aimco are reflected in Aimco’s accompanying balance sheets as noncontrolling interests in Aimco Operating Partnership. Interests in partnerships consolidated into the Aimco Operating Partnership that are held by third parties are reflected in our accompanying balance sheets as noncontrolling interests in consolidated real estate partnerships. The assets of consolidated real estate partnerships owned or controlledconsolidated by the Aimco Operating Partnership generally aremust first be used to settle the liabilities of such consolidated real estate partnerships. These consolidated real estate partnerships’ creditors do not availablehave recourse to pay creditorsthe general credit of Aimco or the Aimco Operating Partnership.
As used herein, and except where the context otherwise requires, “partnership” refers to a limited partnership or a limited liability company and “partner” refers to a partner in a limited partnership or a member of a limited liability company.
Acquisition of Real Estate Assets and Related Depreciation and Amortization
We recognize the acquisition of apartment communities or interests in partnerships that own apartment communities at fair value. If the transaction results in consolidation and the apartment community is considered a business combination, we expense related transaction costs as incurred. If the apartment communitytransaction is considered an asset acquisition (e.g. apartment communities under construction or vacant at time of acquisition), the related transaction costs are capitalized and allocated toas a cost of the acquired assets. apartment community.
We allocate the costpurchase price of acquired apartment communities acquired in business combinations to tangible assets and identified intangible assets and liabilities based on their fair values. We allocate the cost of apartment communities accounted for as asset acquisitions based on the relative fair value of the assets acquired and liabilities assumed. We determine the fair value of tangible

assets, such as land, building, furniture, fixtures and equipment, generally using internal valuation techniques that consider comparable market transactions, replacement costs and other available information. We determine the fair value of identified intangible assets (or liabilities), which typically relate to in-place leases, using internal valuation techniques that consider the terms of the in-place leases, current market data for comparable leases and our experience in leasing similar communities.
The intangible assets or liabilities related to in-place leases are comprised of: (a) the value of the above- and below-market leases in-place, measured over the period, including estimatedprobable lease renewals for below-market leases, that the leases are expected to remain in effect; (b) the estimated unamortized portion of avoided leasing commissions and other costs that ordinarily would be incurred to originate the in-place leases; and (c) the value associated with vacantleased apartment homes during thean estimated absorption period (estimates of lost rental revenue duringthat would not have been earned had leased apartment homes been vacant at the expectedtime of acquisition assuming lease-up periods based on market demand and stabilized occupancy levels at the time of acquisition)levels).
Depreciation for all tangible real estate assets is calculated using the straight-line method over their estimated useful lives. Acquired buildings and improvements are depreciated over a useful life based on the age, condition and other physical characteristics of the apartment community. At December 31, 2015,2016, the weighted average depreciable life of our acquired buildings and improvements was approximately 3028 years. Furniture, fixtures and equipment associated with acquired apartment communities are depreciated over five years.
The values of the above- and below-market leaseslease intangibles are amortized to rental revenue over the expected remaining terms of the associated leases, which include reasonably assured renewal periods. Other intangible assets related to in-place leases are amortized to depreciation and amortization over the expected remaining terms of the associated leases.
At December 31, 20152016 and 2014,2015, deferred income in our consolidated balance sheets includesincluded below-market lease amounts totaling $12.1$10.4 million and $13.8$12.1 million, respectively, which are net of accumulated amortization of $31.4$33.1 million and $29.7$31.4 million, respectively. During the years ended December 31, 2016, 2015 2014 and 2013,2014, we included amortization of below-market leases of $1.7 million, $1.3$1.7 million and $2.9$1.3 million, respectively, in rental and other property revenues in our consolidated statements of operations. In connection with apartment communities sold during the year ended December 31, 2014, we wrote off $1.8 million of unamortized below-market lease amounts to gain on dispositions of real estate. There were no such write offs during the years ended December 31, 20152016 and 2013.2015.
At December 31, 2015,2016, our below-market leases had a weighted average amortization period of 6.76.5 years and estimated aggregate amortization for each of the five succeeding years as follows (in thousands):
  2016 2017 2018 2019 2020
Estimated amortization $1,337
 $1,239
 $1,095
 $1,007
 $915
  Estimated Amortization
2017 
$1,200
2018 1,059
2019 973
2020 884
2021 810

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Capital Additions and Related Depreciation
We capitalize costs, including certain indirect costs, incurred in connection with our capital additions activities, including redevelopment, development and construction projects,redevelopments, developments, other tangible apartment community improvements and replacements of existing apartment community components. Included in these capitalized costs are payroll costs associated with time spent by site employees in connection with capital additions activities at the apartment community level. We characterize as “indirect costs” an allocation of certain department costs, including payroll, at the area operations and corporate levels that clearly relate to capital additions activities. We also capitalize interest, property taxes and insurance during periods in which redevelopment, developmentredevelopments, developments and construction projects are in progress. We commencebegin capitalization of costs, including certain indirect costs, incurred in connection with our capital addition activities, at the point in time whenupon commencement of activities necessary to get apartment communities ready for their intended use are in progress. This includesuse. These activities include when apartment communities or apartment homes are undergoing physical construction, as well as when apartment homes are held vacant in advance of planned construction, provided that other activities such as permitting, planning and design are in progress. We cease the capitalization of costs when the assetsapartment communities are substantially complete and ready for their intended use, which is typically when construction has been completed and apartment homes are available for occupancy. We charge to property operating expense, as incurred, costsCosts including ordinary repairs, maintenance and resident turnover costs.costs are charged to property operating expense as incurred.
We depreciate capitalized costs using the straight-line method over the estimated useful life of the related component or improvement, which is generally 5,, 15 or 30 years. All capitalized site payroll costs and indirect costs are allocated to capital additions proportionately, based on direct costs among capital projects and depreciated over the estimated useful lives of such projects.capital additions.

Certain homogeneous items that are purchased in bulk on a recurring basis, such as carpeting and appliances, are depreciated using group methods that reflect the average estimated useful life of the items in each group. Except in the case of apartment community casualties, where the net book value of the lost asset is written off in the determination of casualty gains or losses, we generally do not recognize any loss in connection with the replacement of an existing apartment community component because normal replacements are considered in determining the estimated useful lives used in connection with our composite and group depreciation methods.
For the years ended December 31, 2016, 2015, 2014 and 2013,2014, we capitalized to buildings and improvements $9.6 million, $11.7 million $14.2 million and $17.6$14.2 million of interest costs, respectively, and $32.9 million, $28.2 million $29.2 million and $33.2$29.2 million of other direct and indirect costs, respectively.
Impairment of Long-Lived Assets
Real estate and other long-lived assets to be held and used are stated at cost, less accumulated depreciation and amortization, unless the carrying amount of the asset is not recoverable. If events or circumstances indicate that the carrying amount of an apartment community may not be recoverable, we make an assessment of its recoverability by comparing the carrying amount to our estimate of the undiscounted future cash flows, excluding interest charges, of the apartment community. If the carrying amount exceeds the aggregate undiscounted future cash flows, we recognize an impairment loss to the extent the carrying amount exceeds the estimated fair value of the apartment property.community.
Based on periodic tests of recoverability of long-lived assets, for the year ended December 31, 2014, we recorded a provision for real estate impairment losses of $1.8 million related to sold apartment communities, and wewhich is included in other expenses, net in our consolidated statement of operations. The impairment loss was related to estimated costs to sell, inclusive of a prepayment penalty. We recorded no such provisions during the years ended December 31, 20152016 and 2013.2015.
Cash Equivalents
We classify highly liquid investments with an original maturity of three months or less as cash equivalents. We maintain cash equivalents in financial institutions in excess of insured limits. We have not experienced any losses in these accounts in the past and believe that we are not exposed to significant credit risk because our accounts are deposited with major financial institutions.
Restricted Cash
Restricted cash includes capital replacement reserves, completion repair reserves, bond sinking fund amounts, tax and insurance escrow accounts held by lenders and resident security deposits.

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Other Assets
At December 31, 20152016 and 2014,2015, other assets was comprised of the following amounts (dollars in thousands):
2015 20142016 2015
Deferred financing costs, net$26,126
 $30,320
Investments in unconsolidated real estate partnerships15,401
 16,046
Investments in securitization trust that holds Aimco property debt65,502
 61,043
$76,063
 $65,502
Intangible assets, net45,447
 49,441
40,668
 45,447
Deferred tax asset, net (Note 8)26,117
 252
Investments in unconsolidated real estate partnerships14,983
 15,401
Debt issue costs related to revolving credit facility borrowings, net5,250
 2,107
Deferred tax asset, net (Note 9)5,076
 26,117
Accumulated unrecognized deferred tax expense from intercompany transfers (Note 9)62,468
 15,099
Deposits for apartment community acquisitions1,404
 26,632
Assets related to the legacy asset management business (Note 3)156,389
 161,135
34,397
 154,895
Prepaid expenses, accounts and notes receivable, deposits and other138,936
 158,490
Prepaid expenses, accounts and notes receivable, and other104,606
 97,205
Other assets per consolidated balance sheets$473,918
 $476,727
$344,915
 $448,405
Deferred Costs
We defer lender fees and other direct costs incurred in obtaining new financing and amortize the amounts over the terms of the related loan agreements. Amortization of these costs is included in interest expense. As further discussed under the heading Accounting Pronouncements Adopted in the Current Year, debt issue costs associated with our revolving credit facility are included in Other assets on our consolidated balance sheets. Debt issue costs associated with non recourse property debt are presented as a direct deduction from the related liability on our consolidated balance sheets.

We defer leasing commissions and other direct costs incurred in connection with successful leasing efforts and amortize the costs over the terms of the related leases. Amortization of these costs is included in depreciation and amortization.
Investments in Unconsolidated Real Estate Partnerships
We own general and limited partner interests in partnerships that either directly, or through interests in other real estate partnerships, own apartment communities. We generally account for investments in real estate partnerships that we do not consolidate under the equity method. Under the equity method, we recognize our share of the earnings or losses of the entity for the periods being presented, is included in equity in earnings or losses from unconsolidated real estate partnerships (within other, net in our consolidated statements of operations), inclusive of our share of any impairments and disposition gains recognized by and related to such entities.entities, and we present such amounts within other, net in our consolidated statements of operations.
The excess of the cost of the acquired partnership interests over the historical carrying amount of partners’ equity or deficit is generally ascribed generally to the fair values of land and buildings owned by the partnerships. We amortize the excess cost related to the buildings over the related estimated useful lives. Such amortization is recorded as a componentan adjustment of equity inthe amounts of earnings or losses we recognize from such unconsolidated real estate partnerships.
Investments in Securitization Trust that holds Aimco Property Debt
We hold investments in a securitization trust which primarily holds certain of our property debt. These investments were initially recognized at their purchase price and the discount to the face value is being accreted into interest income over the expected term of the securities. We have designated these investments as available for sale securities and we measure these investments at fair value with changes in their fair value, other than the changes attributed to the accretion described above, recognized as an adjustment of accumulated other comprehensive income or loss within equity and partners’ capital. Refer to Note 611 for further information regarding these securities.
Intangible Assets
At December 31, 20152016 and 2014,2015, other assets included goodwill associated with our reportable segments of $43.9$39.4 million and $45.1$43.9 million, respectively. We perform an annual impairment test of goodwill that compares the fair value of reporting units with their carrying amounts, including goodwill. We determined that our goodwill was not impaired in 2016, 2015, 2014 or 2013.2014.
During the years ended December 31, 2016, 2015, 2014 and 2013,2014, we allocated $4.5 million, $1.2 million $3.9 million and $5.5$3.9 million, respectively, of goodwill related to our reportable segments (conventional and affordable real estate operations) to the carrying amounts of the apartment communities sold or classified as held for sale. The amounts of goodwill allocated to these apartment communities were based on the relative fair values of the apartment communities sold or classified as held for sale and the retained portions of the reporting units to which the goodwill asis allocated.
Intangible assets also includes amounts related to in-place leases as discussed under the Acquisition of Real Estate Assets and Related Depreciation and Amortization heading.

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Capitalized Software Costs
Purchased software and other costs related to software developed for internal use are capitalized during the application development stage and are amortized using the straight-line method over the estimated useful life of the software, generally three to five years. For the years ended December 31, 2016, 2015 2014 and 2013,2014, we capitalized software purchase and development costs totaling $3.4 million, $3.6 million $4.4 million and $3.3$4.4 million, respectively. At December 31, 20152016 and 2014,2015, other assets included $16.4$12.6 million and $19.7$16.4 million of net capitalized software, respectively. During the years ended December 31, 2016, 2015 2014 and 2013,2014, we recognized amortization of capitalized software of $7.2 million, $6.9 million $6.7 million and $8.9$6.7 million, respectively, which is included in depreciation and amortization in our consolidated statements of operations.
Noncontrolling Interests in Consolidated Real Estate Partnerships
We report the unaffiliated partners’ interests in the net assets of our consolidated real estate partnerships as noncontrolling interests in consolidated real estate partnerships within consolidated equity and partners’ capital. Noncontrolling interests in consolidated real estate partnerships consist primarily of equity interests held by limited partners in consolidated real estate partnerships that have finite lives. We generally attribute to noncontrolling interests their share of income or loss of consolidated partnerships based on their proportionate interest in the results of operations of the partnerships, including their share of losses even if such attribution results in a deficit noncontrolling interest balance within our equity and partners’ capital accounts.
The terms of the related partnership agreements generally require the partnerships to be liquidated following the sale of the underlying real estate. As the general partner in these partnerships, we ordinarily control the execution of real estate sales and other events that could lead to the liquidation, redemption or other settlement of noncontrolling interests. However, as discussed

in Note 3, we continue to consolidate certain partnerships andan apartment communitiescommunity associated with the legacy asset management business for which the derecognition criteria associated with our sale of the portfolio haveapartment community has not been met. We do not control the execution of salesa sale and other events related to the assetsapartment community that will lead to the to the liquidation of these partnerships and derecognition of the associated noncontrolling interests. The aggregate carrying amount of noncontrolling interests in consolidated real estate partnerships totaled $151.4 million and $233.3 million at December 31, 2015 and 2014, respectively. These noncontrolling interests included $0.1 million (deficit) and $44.1 million, respectively, associated with the noncontrolling interests in the legacy asset management business at December 31, 2015 and 2014.
Changes in our ownership interest in consolidated real estate partnerships generally consist of our purchase of an additional interest in or the sale of our entire interest in a consolidated real estate partnership. The effect on our equity and partners’ capital of our purchase of additional interests in consolidated real estate partnerships during the years ended December 31, 2016, 2015, 2014 and 20132014, is shown in our consolidated statements of equity and partners’ capital and further discussed in Note 3.capital. The effect on our equity and partners’ capital of sales of consolidated real estate or sales of our entire interest in consolidated real estate partnerships is reflected in our consolidated financial statements as salesgains on disposition of real estate and accordingly the effect on our equity and partners’ capital is reflected within the the amount of net income attributable to us and to noncontrolling interests. In accordance with FASB Accounting Standards Codification, or ASC, Topic 810, uponUpon our deconsolidation of a real estate partnership following the sale of our partnership interests or liquidation of the partnership following sale of the related apartment community, we derecognize any remaining noncontrolling interest of the associated partnership previously recorded in our consolidated balance sheets.
Noncontrolling Interests in Aimco Operating Partnership
Noncontrolling interests in Aimco Operating Partnership consist of common OP Units HPUs and equivalents, as well as preferred OP Units. Within Aimco’s consolidated financial statements, the Aimco Operating Partnership’s income or loss is allocated to the holders of common partnership units and equivalents based on the weighted average number of common partnership units (including those held by Aimco) and equivalents outstanding during the period. During the years ended December 31, 2016, 2015, 2014 and 2013,2014, the holders of common OP Units and equivalents had a weighted average ownership interest in the Aimco Operating Partnership of 4.7%, 5.0%4.7% and 5.2%5.0%, respectively. Holders of the preferred OP Units participate in the Aimco Operating Partnership’s income or loss only to the extent of their preferred distributions. See Note 107 for further information regarding the items comprising noncontrolling interests in the Aimco Operating Partnership.
Revenue Recognition
Our apartment communities have operating leases with apartment residents with terms averaging 12 months.months. We recognize rental revenue related to these leases, net of any concessions, on a straight-line basis over the term of the lease. We recognize revenues from property management, asset management syndication and other services when the related fees are earned and are realized or realizable.

Tax Credit Arrangements
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TableWe sponsor certain partnerships that operate qualifying affordable housing apartment communities and are structured to provide for the pass-through of Contentstax credits and deductions to their partners. The tax credits are generally realized ratably over the first ten years of the tax credit arrangement and are subject to the partnership’s compliance with applicable laws and regulations for a period of 15 years. Typically, we are the general partner with a legal ownership interest of one percent or less and unaffiliated institutional investors (which we refer to as tax credit investors or investors) acquire the limited partnership interests of at least 99%. At inception, each investor agreed to fund capital contributions to the partnerships and we received a syndication fee from the partnerships upon the investors’ admission to the partnership.
We have determined that the partnerships in these arrangements are variable interest entities, or VIEs, and where we are the general partner, we are generally the primary beneficiary that is required to consolidate the partnerships. When the contractual arrangements obligate us to deliver tax benefits to the investors, and entitle us through fee arrangements to receive substantially all available cash flow from the partnerships, we recognize the income or loss generated by the underlying real estate based on our economic interest in the partnerships’ current period results, which is approximately 100% and represents the allocation of cash available for distribution we would receive from a hypothetical liquidation at the book value of the partnership’s net assets. Our economic interest in these partnerships will be 100% until such time that the limited partners become entitled to an allocation of a hypothetical or actual distribution (generally upon sale of the underlying real estate). Economic interest generally differs from legal interest due to the terms of the partnership agreements with profit and loss allocations and distributions upon liquidation that differ from stated percentages.
Capital contributions received by the partnerships from tax credit investors represent, in substance, consideration that we receive in exchange for our obligation to deliver tax credits and other tax benefits to the investors. We record these contributions as deferred income in our consolidated balance sheets upon receipt, and we recognize these amounts as revenue in our consolidated statements of operations when our obligation to the investors is relieved upon delivery of the tax benefits.

Insurance
We believe that our insurance coverages insure our apartment communities adequately against the risk of loss attributable to fire, earthquake, hurricane, tornado, flood and other perils. In addition, we have third-party insurance coverage for substantial portions(after self-insured retentions) that defray the costs of our property,large workers’ compensation, health and general liability exposures. Losses are accruedWe accrue losses based upon our estimates of the aggregate liability for uninsured losses incurred using certain actuarial assumptions followed in the insurance industry and based on our experience.
Share-Based Compensation
We issue various forms of share-based compensation, including stock options and restricted stock awards with service conditions and/or market conditions. We recognize share-based employee compensation related to restricted stock awards and employee stock options, based on the fair value on the grant date fair value and recognize compensation cost, net of forfeitures, over the awards’ requisite service periods. See Note 118 for further discussion of our share-based compensation.
Tax Credit Arrangements
We sponsor certain partnerships that operate qualifying affordable housing apartment communities and are structured to provide for the pass-through of tax credits and deductions to their partners. The tax credits are generally realized ratably over the first ten years of the tax credit arrangement and are subject to the partnership’s compliance with applicable laws and regulations for a period of 15 years. Typically, we are the general partner with a legal ownership interest of one percent or less and unaffiliated institutional investors (which we refer to as tax credit investors or investors) acquire the limited partnership interests (at least 99%). At inception, each investor agrees to fund capital contributions to the partnerships and we receive a syndication fee from the partnerships upon the investors’ admission to the partnership.
We have determined that the partnerships in these arrangements are VIEs and, where we are general partner, we are generally the primary beneficiary that is required to consolidate the partnerships. When the contractual arrangements obligate us to deliver tax benefits to the investors, and entitle us through fee arrangements to receive substantially all available cash flow from the partnerships, we account for these partnerships as wholly-owned subsidiaries, recognizing the income or loss generated by the underlying real estate based on our economic interest in the partnerships. Capital contributions received by the partnerships from tax credit investors represent, in substance, consideration that we receive in exchange for our obligation to deliver tax credits and other tax benefits to the investors. We record these contributions as deferred income in our consolidated balance sheet upon receipt, and we recognize these amounts as revenue in our consolidated statements of operations when our obligation to the investors is relieved upon delivery of the tax benefits.
Income Taxes
We haveAimco has elected to be taxed as a REIT under the Code commencing with ourits taxable year ended December 31, 1994, and intendit intends to continue to operate in such a manner. OurAimco’s current and continuing qualification as a REIT depends on ourits ability to meet the various requirements imposed by the Code, which are related to organizational structure, distribution levels, diversity of stock ownership and certain restrictions with regard to owned assets and categories of income. If we qualifyAimco qualifies for taxation as a REIT, weit will generally not be subject to United States Federalfederal corporate income tax on ourits 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.
Even if we qualifyAimco qualifies as a REIT, weit may be subject to United States Federalfederal income and excise taxes in various situations, such as on our undistributed income. WeAimco also will be required to pay a 100% tax on any net income on non-arm’s length transactions between usit and a TRS (described below) and on any net income from sales of apartment communities that were held for sale to customers in the ordinary course. In addition, weAimco could also be subject to the alternative minimum tax, or AMT, on our items of tax preference. The state and local tax laws may not conform to the United States Federalfederal income tax treatment, and weAimco may be subject to state or local taxation in various state or local jurisdictions, including those in which we transact business. Any taxes imposed on us reduce our operating cash flow and net income.
Certain of our operations or a portion thereof, including property management, asset management and risk management, are conducted through taxable REIT subsidiaries, which are subsidiaries of the Aimco Operating Partnership, and 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 Federalfederal 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.

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For our TRS entities, deferred income taxes result from temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for United States Federalfederal income tax purposes, and are measured using the enacted tax rates and laws that are expected to be in effect when the differences reverse. We reduce deferred tax assets by recording a valuation allowance when we determine, based on available evidence, that it is more likely than not that the assets will not be realized. We recognize the tax consequences associated with intercompany transfers between the REIT and TRS entities when the related assets affect our GAAP income or loss, generally through depreciation, impairment losses, or sales to third partythird-party entities. Refer to Note 89 for further information about our income taxes.
Discontinued Operations
In April 2014,taxes and to the FinancialRecent Accounting Standards Board, or FASB, issued Accounting Standards Update 2014-08, Reporting Discontinued Operations and DisclosuresPronouncements heading within this note for a discussion of Disposals of Components of an Entity, or ASU 2014-08. ASU 2014-08 revised the definition of, and the requirements for reporting, a “discontinued operation.” Specifically, ASU 2014-08 revised the reporting requirementschange in GAAP pertaining to only allow a component of an entity, or group of components of an entity, to be reported in discontinued operations if their disposal represents a “strategic shifttax consequences associated with intercompany transfers that has (or will have) a major effect on an entity’s operations and financial results.”
For public companies, ASU 2014-08 was required to be applied prospectively to disposals of components of an entity or classifications as held for sale of components of an entity that occur in annual periods commencing after December 15, 2014; however, as permitted by the transition provisions, we electedplan to adopt ASU 2014-08 effective January 1, 2014, for disposals (or classifications as held for sale) that had not been reported in financial statements previously issued.
Under ASU 2014-08, we believe routine sales of apartment communities and certain groups of apartment communities generally do not meet the requirements for reporting within discontinued operations. In accordance with GAAP prior to our adoption of ASU 2014-08, we reported the results of apartment communities that met the definition of a component of an entity and had been sold or met the criteria to be classified as held for sale as discontinued operations. For years ended December 31, 2013, or earlier, and interim periods within those years, we included the results of such apartment communities, including any gain or loss on their disposition, less applicable income taxes, in income from discontinued operations within the consolidated statements of operations. See Note 12 for additional information regarding discontinued operations.2017.
Comprehensive Income or Loss
As discussed under the preceding Investments in Securitization Trust that holds Aimco Property Debt heading, we have investments that are measured at fair value with unrealized gains or losses recognized as an adjustment of accumulated other comprehensive loss within equity and partners’ capital. Additionally, as discussed in Note 611, we recognize changes in the fair value of our cash flow hedges as an adjustment of accumulated other comprehensive loss within equity and partners’ capital. The amounts of consolidated comprehensive income for the years ended December 31, 2016, 2015, 2014 and 2013,2014, along with the corresponding amounts of such comprehensive income attributable to Aimco, the Aimco Operating Partnership and to noncontrolling interests, isare presented within the accompanying consolidated statements of comprehensive income.

Earnings per Share and Unit
Aimco calculates earnings (loss) per share based on the weighted average number of shares of Common Stock, participating securities, common stock equivalents and dilutive convertible securities outstanding during the period. The Aimco Operating Partnership calculates earnings (loss) per unit based on the weighted average number of common partnership units and equivalents, participating securities and dilutive convertible securities outstanding during the period. The Aimco Operating Partnership considers both common partnership units and HPUs,equivalents, which have identical rights to distributions and undistributed earnings, to be common units for purposes of the earnings per unit computations. See Note 1310 for further information regarding earnings per share and unit computations.
Use of Estimates
The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts included in the financial statements and accompanying notes thereto. Actual results could differ from those estimates.
Reclassifications
Certain items included in the 2015 and 2014 financial statements have been reclassified to conform to the current presentation.
Accounting Pronouncements Adopted in the Current Year
During 2015, the Financial Accounting Standards Board, or FASB, issued new standards, which revised the presentation of debt issue costs on the balance sheet. After adoption, entities generally present debt issue costs associated with long term debt in their balance sheet as a direct deduction from the related debt liability, and debt issue costs related to line-of-credit arrangements may continue to be deferred and presented as assets. Amortization of the deferred costs will continue to be included in interest expense. We adopted this guidance effective as of January 1, 2016 and elected to continue to reflect deferred issue costs associated with our revolving credit facility as an asset, which is included in other assets on our consolidated balance sheets. We have retrospectively applied the guidance for debt issue costs associated with our non-recourse property debt to all prior periods, which resulted in the reclassification of $24.0 million from other assets to non-recourse property debt on our consolidated balance sheet at December 31, 2015.

In February 2015, the FASB issued a standard that revised the consolidation analysis required under GAAP for VIEs. Under this revised guidance, limited partnerships are no longer VIEs when the limited partners hold certain rights over the general partner. Alternatively, limited partnerships not previously viewed as VIEs are now considered VIEs in the absence of such rights. We adopted this guidance in 2016, as more fully described in Note 13.
Recent Accounting Pronouncements
In May 2014, theThe FASB and International Accounting Standards Boardhas issued their final standard onnew standards that affect accounting for revenue from contracts with customers which was issued by the FASB as Accounting Standards Update 2014-09, Revenue from Contracts with Customers, or ASU 2014-09. ASU 2014-09, which establishesand are effective for Aimco on January 1, 2018. The new revenue standards establish a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers supersedesand supersede most current GAAP applicable to revenue recognition and converges United States and international accounting standards in this area.recognition. The core principle of the new guidance is that revenue shallshould only be

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recognized when an entity has transferred control of goods or services to a customer and for an amount reflecting the consideration to which the entity expects to be entitled for such exchange.

ASU 2014-09 is effective for public entities for annual reporting periods beginning after December 15, 2017, with early adoption permitted in years beginning after December 15, 2016, and allows for full retrospective adoption applied to all periods presented orWe anticipate using the modified retrospective adoption with themethod, which will result in our recognition of a cumulative effect ofadjustment from initially applying the standard recognized at the date of initial application.new revenue standards. We have not yet determinedcompleted our analysis of the effect ASU 2014-09this guidance will have on our consolidated financial statements.

In February 2015,statements, nor have we determined the FASB issued Accounting Standards Update 2015-02, Consolidation (Topic 810): Amendmentsamount of the cumulative effect adjustment that will be recognized upon adoption. However, based on our preliminary assessment, we do not anticipate significant changes to the Consolidation Analysis,timing or ASU 2015-02, which significantly changes the consolidation analysis required under GAAP for VIEs. Under this revised guidance, it is less likely that certain fees, such as asset management fees, would be considered variable interests and therefore fewer entities may be considered VIEs. Additionally, limited partnerships may no longer be viewed as VIEs if the limited partners hold certain rights over the general partner. Alternatively, limited partnerships not previously viewed as VIEs may now be considered VIEs in the absenceamount of such rights. For public companies, the guidance in ASU 2015-02 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015, with early adoption permitted. We will adopt the guidance in ASU 2015-02 in connection with our March 31, 2016, financial statements.revenue we recognize on an ongoing basis. We have substantiallynot completed our analysis of the effect the new revenue standards may have on various components of revenue, including government subsidies we receive in connection with our affordable portfolio, income recognized from our low-income housing tax credit partnerships and our disposition of the legacy asset management business, which is discussed in Note 3.
The FASB has also issued a new standard on lease accounting, which is effective for Aimco on January 1, 2019, with early adoption permitted. Under the new lease standard, lessor accounting will be substantially similar to the current model, but aligned with certain changes to the lessee model and the new revenue standards. Lessors will be required to allocate lease payments to separate lease and nonlease components of ASU 2015-02each lease agreement, with the nonlease components evaluated under the revenue guidance discussed above. Lessees will be required to recognize a right of use asset and a lease liability for virtually all leases, with such leases classified as either operating or finance. Operating leases will result in straight-line expense recognition (similar

to current operating leases) and finance leases will result in a front-loaded expense recognition pattern (similar to current capital leases). Classification will be based on criteria that are largely similar to those applied in current lease accounting.
The new standard must be adopted using a modified retrospective method, which requires application of the new guidance at the beginning of the earliest comparative period presented and provides for certain practical expedients, which we anticipate electing. We have not yet determined if we will elect to adopt this guidance prior to its effective date.
We do not anticipate significant changes in the accounting for income from our leases with residents. However, in circumstances where we are a lessee, in primarily a limited population of ground leases and leases for corporate office space, we will be required to recognize right of use assets and related lease liabilities on our consolidated balance sheets. Based on our anticipated election of the practical expedients, we will not be required to reassess the classification of existing leases and therefore the amount and timing of expense recognition will be unchanged. However, in the event we modify existing ground leases or enter into new ground leases after the effective date, such leases will likely be classified as finance leases, which have a front-loaded expense recognition. We are in the process of determining the amount of the right of use assets and related lease liabilities that will be recognized upon adoption.
In addition to the revenue and lease accounting standards, the FASB has issued various accounting pronouncements, which are not yet effective that may have an effect on our financial statements. One such Accounting Standards update, or ASU, is intended to simplify the accounting for the income tax consequences of intercompany transfers of assets. We anticipateintend to early adopt this guidance effective January 1, 2017. Currently, the recognition within the statement of operations of income tax expenses or benefit resulting from an intercompany transfer of assets is prohibited until the assets affect GAAP income or loss, for example, through depreciation, impairment or upon the sale of the asset to a third-party. Under the new standard, an entity will recognize the income tax expense or benefit from an intercompany transfer of assets when the transfer occurs. This change is required to be applied on a modified retrospective basis through a cumulative effect adjustment to retained earnings as of the beginning of the period of adoption. As of December 31, 2016, we had accumulated unrecognized deferred tax expense from intercompany transfers between the Aimco Operating Partnership and TRS entities of approximately $62.5 million, which will be recognized as a cumulative effect adjustment to retained earnings on January 1, 2017.
Another standard recently issued by the FASB revises the GAAP definition of a business and is effective for Aimco on January 1, 2018, with early adoption permitted. The new definition excludes sets of activities from the definition of a business when a single asset or group of similar assets comprises substantially all non-wholly ownedof the fair value of the acquired (or disposed) gross assets. Under the current definition, apartment communities with leases in place are considered businesses, whereas under the revised definition, we expect that most acquisitions and dispositions involving real estate partnerships will meetnot be considered businesses. Under the revised characteristicsnew standard, transaction costs incurred to acquire real estate operations will be capitalized as a cost of the acquisition, whereas these costs are currently expensed when the acquired assets are determined to be a VIE, resulting in additional disclosure; however,business. The new standard is required to be applied prospectively to transactions occurring after the date of adoption. We have not determined whether we will adopt this standard prior to the effective date, but we do not expect to consolidate any presently unconsolidated entities or to deconsolidate any presently consolidated entities as a result of the accounting change.

In April 2015, the FASB issued ASU 2015-03, Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, or ASU 2015-03, to revise the presentation of debt issuance costs. Under ASU 2015-03, entities generallyanticipate this standard will present debt issuance costs in their balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of the deferred costs will continue to be included in interest expense. In August 2015, the FASB issued ASU 2015-15, Interest—Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements—Amendments to SEC Paragraphs Pursuant to Staff Announcement at June 18, 2015 EITF Meeting  (SEC Update), or ASU 2015-15, to clarify the SEC staff’s position regarding the presentation and subsequent measurement of debt issuance costs related to line-of-credit arrangements due to the lack of guidance on this topic in ASU 2015-03. The SEC staff recently announced that it would not object to an entity deferring and presenting debt issuance costs associated with line-of-credit arrangements as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the arrangement, regardless of whether there are any outstanding borrowings under the arrangement.

For public companies, the guidance in ASUs 2015-03 and 2015-15, which is to be applied retrospectively to all prior periods, is effective for fiscal years beginning after December 15, 2015, with early adoption permitted for financial statements that have not been previously issued. We will adopt the guidance in ASUs 2015-03 and 2015-15 in connection with our March 31, 2016, financial statements. We do not expect ASUs 2015-03 and 2015-15 to have a significant effect on our consolidatedfinancial condition or results of operations.
During 2016, the FASB also issued an ASU that is intended to reduce diversity in the classification and presentation of changes in restricted cash in the statement of cash flows and is effective for Aimco on January 1, 2018, with early adoption permitted. The new standard requires that the statement of cash flows describe the changes in the combined balances of cash and cash equivalents and restricted cash during the period. The guidance is required to be applied retrospectively to each period presented in the financial statements. We currently present transfers between restricted and unrestricted cash accounts as operating, investing and financing activities depending upon the required or intended purpose for the restricted funds, and cash receipts and payments directly with third parties to or from restricted cash accounts are treated as constructive cash flows. We expect that the primary change to our statement of cash flows will be the presentation of activity in the restricted cash accounts combined with similar activity in unrestricted accounts. We plan to adopt this standard on January 1, 2018.
Lastly, the FASB issued guidance intended to simplify the accounting for share-based compensation and such guidance is effective for Aimco on January 1, 2017. Under current practice, tax benefits in excess of those associated with recognized compensation cost, or windfalls, are recorded in equity and tax deficiencies are recorded in equity until previous windfalls have been recouped and then recognized in earnings. Under the new guidance, all of the tax effects related to share-based compensation will be recognized through earnings. This change is required to be applied prospectively to all windfalls and tax deficiencies resulting from settlements occurring after the date of adoption. The new guidance also requires windfalls to be recorded when they arise. This change in timing of recognition is required to be applied on a modified retrospective basis, with a cumulative effect adjustment to opening retained earnings on the date of adoption. As of December 31, 2016, there were no accumulated windfalls recorded in equity, therefore we will not record a cumulative effect adjustment upon adoption. In future periods, we may experience incremental volatility in income tax benefit or expense resulting from the recognition in earnings of windfall benefits or deficiencies upon the exercise of stock options and vesting of restricted shares.


F-23


Note 3 — Significant Transactions
Acquisitions of Apartment Communities
During the year ended December 31, 2016, we purchased a 463-apartment community in Redwood City, California that was in the final stages of construction at the time of acquisition. At closing, we paid $303.0 million in cash, and issued $17.0 million of 6.0% Class Ten preferred OP Units to the seller. The purchase price, plus $1.8 million of capitalized transaction costs, was allocated as follows: $26.9 million to land; $292.7 million to buildings and improvements (including construction in progress); and $2.2 million to furniture and fixtures.
During the year ended December 31, 2015,, we acquired conventional apartment communities located in Atlanta, Georgia and Cambridge, Massachusetts and duringMassachusetts. During the year ended December 31, 2014,, we acquired conventional apartment communities located inin: San Jose, California,California; Aurora, Colorado,Colorado; Boulder, Colorado,Colorado; Atlanta, GeorgiaGeorgia; and New York, New York. Summarized information regarding these acquisitions is set forth in the table below (dollars in thousands):
 Year Ended December 31,
 2015 2014
Number of apartment communities3
 6
Number of apartment homes300
 1,182
Acquisition price$129,150
 $291,925
Non-recourse property debt assumed (outstanding principal balance)
 65,200
Non-recourse property debt assumed (fair value)
 64,817
Total fair value allocated to land10,742
 70,961
Total fair value allocated to buildings and improvements118,366
 217,851
During the year ended December 31, 2014, we also purchased entities that own 2.4 acres in the heart of downtown La Jolla, California, adjoining and overlooking La Jolla Cove and the Pacific Ocean. The property, which is zoned for multifamily and mixed-use, is currently occupied by three small commercial buildings and a limited-service hotel, which is managed for us by a third party.third-party.
Dispositions of Apartment Communities and Assets Held for Sale
During the years ended December 31, 2016, 2015 and 2014, we sold 8, 11 and 30 apartment communities, respectively, with a total of 3,341, 3,855 and 9,067 apartment homes, respectively. We recognized gains on dispositions of real estate, net of tax, of $393.8 million, $180.6 million and $288.6 million during the years ended December 31, 2016, 2015 and 2014, respectively. We report gains on disposition net of incremental direct costs incurred in connection with the transactions, including any prepayment penalties incurred upon repayment of property debt collateralized by the apartment communities being sold. Such prepayment penalties totaled $25.8 million and $25.2 million, of which $16.6 million and $16.6 million, respectively, represented the mark-to-market adjustment, during the years ended December 31, 2015 and 2014, respectively.
In addition to the apartment communities we sold, we are currently marketing for sale certain apartment communities that are inconsistent with our long-term investment strategy. At the end of each reporting period, we evaluate whether such communities meet the criteria to be classified as held for sale. As of December 31, 2016, we had one apartment community with 52 apartment homes classified as held for sale.
Asset Management Business Disposition
On December 19,In 2012, we sold the Napico portfolio, our legacy asset management business. The transaction was primarily seller-financed, and the associated notes arewere scheduled to be repaid from the operation and liquidation of the Napico portfolio and arewere collateralized by the buyer’s interests in the portfolio. During the year ended December 31, 2016, we received the final payment on the first of two seller-financed notes. During 2016, the buyer prepaid the second seller-financed notes as well as an agreed upon final payment representing future contingent consideration that may have been due under the terms of the sale. The 2016 payment represents the final amounts that the buyer owed to us; however, at the time of payment we had continuing involvement in two of the communities within the Napico portfolio in the form of legal interest in the communities and guarantees related to property level debt. In November 2016, we were released from the guarantee related to property level debt for one of the communities and transferred our legal interest in the property to the buyer.

In accordance with the provisions of GAAP applicable to sales of real estate or interests therein, for accounting purposes,during 2016 we have not recognizedderecognized the salenet assets and are accountingliabilities of the Napico portfolio upon receipt of the final payment and release of the guarantees during 2016, with the exception of the amounts related to the final community. The derecognition events resulted in the reduction of other assets and accrued liabilities and other by $107.7 million and $114.0 million, respectively, and our recognition of a gain of $5.2 million, which is recorded in other, net on our consolidated statement of operations for the transactionyear ended December 31, 2016. We also wrote off a deficit balance in noncontrolling interests in consolidated real estate partnerships associated with the Napico portfolio of $8.1 million, which is recorded in net income attributable to noncontrolling interests in consolidated real estate partnerships for the year ended December 31, 2016.
We will continue to account for the final community under the profit sharing method. Until full paymentmethod until we have been released from the guarantee and our legal interest has been received fortransferred to the seller-financed notes orbuyer. Accordingly, we otherwise meet the requirements to recognize the sale for accounting purposes, wewill defer profit recognition associated with this community, and will continue to recognize the portfolio’sits assets and liabilities, each condensed into single line items within other assets and accrued liabilities and other, respectively, in our consolidatedand related deficit balance sheets, for all dates following the transaction. Similarly, we will continue to recognize the portfolio’s results of operations, also condensed into a single line item within our consolidated statements of operations, for periods subsequent to the transaction. In January 2016, we received final payment on the first of the two seller-financed notes and the buyer was in compliance with the terms of the second seller-financed note.
At December 31, 2015, the Napico portfolio consisted of 14 partnerships that held investments in 12 apartment communities that were consolidated and 44 apartment communities that were accounted for under the equity or cost methods of accounting. The portfolio’s assets and liabilities included in other assets in our consolidated balance sheets are summarized below (in thousands).

F-24


 December 31,
 2015 2014
Real estate, net$108,119
 $117,851
Cash and cash equivalents33,725
 23,133
Investment in unconsolidated real estate partnerships and other assets14,545
 20,151
Total assets$156,389
 $161,135
    
Total indebtedness$148,761
 $113,641
Accrued and other liabilities7,055
 4,417
Total liabilities155,816
 118,058
    
Noncontrolling interests in consolidated real estate partnerships(111) 44,106
Equity attributable to Aimco and the Aimco Operating Partnership684
 (1,029)
Total liabilities and equity$156,389
 $161,135
During the year ended December 31, 2015, Napico sold several consolidated apartment communities, resulting in the reduction of real estate, and Napico refinanced several apartment communities, resulting in a significant increase in indebtedness and a corresponding reduction in noncontrolling interests in consolidated real estate partnerships following the distribution of approximately $38.9 million of such proceeds.
Summarized information regarding the Napico portfolio’s results of operations, including any expense we recognize under the profit sharing method, is shown below in thousands. The net (loss) income related to Napico (before noncontrolling interests) is included in other, net in our consolidated statementsbalance sheets. Such amounts were $34.4 million, $39.1 million and $0.5 million, respectively, as of operations.
 Year Ended December 31,
 2015 2014 2013
Revenues$26,203
 $27,701
 $23,711
Expenses(21,520) (21,472) (21,188)
Equity in earnings or loss of unconsolidated entities, gains or losses on dispositions and other, net(4,495) (6,996) (748)
Net income (loss) related to legacy asset management business188
 (767) 1,775
Income tax (expense) benefit associated with legacy asset management business(1,967) 3
 (639)
Noncontrolling interests in consolidated real estate partnerships5,420
 (403) 21,370
Net income (loss) of legacy asset management business attributable to Aimco and the Aimco Operating Partnership$3,641
 $(1,167) $22,506
The results of operations for the consolidated apartment communities sold by the owner of this portfolio through December 31, 2013, are presented within income from discontinued operations in our consolidated statement of operations for the year ended December 31, 2013, and are excluded from the summary above. Revenues increased during the year ended December 31, 2014, as compared to the year ended December 31, 2013, due to an adjustment to increase subsidized rents to reflect current market rates for one of the apartment communities in this portfolio.2016.
Based on our limited economic ownership in this portfolio, most of the assets and liabilities are allocated to noncontrolling interests and do not significantly affect our consolidated equity or partners’ capital. Additionally, the operating results of this portfolio generally have an insignificant effect on the amounts of income or loss attributable us, except as it relates to the consolidated partnerships within this portfolio that sell their final investments and commence dissolution, which results in the derecognition of all remaining noncontrolling interest balances associated with these partnerships. During 2013, noncontrolling interests in consolidated real estate partnerships reflects a benefit of $20.6 million to Aimco and the Aimco Operating Partnership’s share of net income for the derecognition of such noncontrolling interest balances.
We consolidated the majority of these entities in connection with our adoption of a new accounting principle in 2010, and at that time recognized a large cumulative effect of a change in accounting principle charge to our equity and partners’ capital. This adjustment represented the cumulative charges to earnings we would have recognized for any distributions or losses allocable to noncontrolling interests in excess of the carrying amount of the associated noncontrolling interest balances had we consolidated these entities from the period of our initial involvement.

F-25


Income or loss attributable to these noncontrolling interests will continue to be recognized commensurate with the recognition of the results of operations of the portfolio. If payment is received on the remaining seller-financed note or we otherwise meet the requirements to recognize the sale for accounting purposes, we expect to recognize a gain attributable to Aimco and the Aimco Operating Partnership.
Note 4 — Investments in Unconsolidated Real Estate Partnerships
At December 31, 2015, 2014 and 2013, we owned general and limited partner interests in unconsolidated real estate partnerships that owned 11, 11 and 20 apartment communities, respectively. At December 31, 2015, our ownership interests in these unconsolidated real estate partnerships ranged from 40% to 67%.
The following table provides selected combined financial information for the unconsolidated real estate partnerships in which we had investments accounted for under the equity method as of and for the years ended December 31, 2015, 2014 and 2013 (in thousands):
 2015 2014 2013
Total assets$84,796
 $85,492
 $93,242
Total liabilities52,685
 54,472
 64,859
Partners’ capital32,111
 31,020
 28,383
Rental and other property revenues12,193
 12,978
 16,268
Property operating expenses(5,473) (6,233) (8,470)
Depreciation and amortization(1,841) (3,081) (3,300)
Interest expense(2,520) (2,785) (4,185)
Gain on sale and impairment losses, net
 
 36,212
Net income1,720
 688
 35,909
At December 31, 2015, our aggregate recorded investment in unconsolidated partnerships of $15.4 million was less than our share of the partners' capital or deficit by approximately $0.8 million. At December 31, 2014, our aggregate recorded investment in unconsolidated partnerships of $16.0 million exceeded our share of the partners’ capital or deficit recognized in the underlying partnerships’ financial statements by approximately $0.4 million.
Note 5 — Non-Recourse Property Debt and Credit Agreement
Non-Recourse Property Debt
We finance our apartment communities primarily using property-level non-recourse, long-dated, fixed-rate borrowings, each of which is collateralized by a single apartment community and is non-recourse to us.amortizing debt. The following table summarizes our non-recourse property debt related to assets classified as held for use at December 31, 20152016 and 2014 (dollars in2015 (in thousands):
 Principal Outstanding
 2015 2014
Fixed rate property debt$3,761,238
 $3,902,642
Variable rate property debt84,922
 120,167
Total property debt$3,846,160
 $4,022,809
 December 31,
 2016 2015
Fixed-rate property debt$3,806,003
 $3,761,238
Variable-rate property debt83,644
 84,922
Debt issue costs, net of accumulated amortization(22,945) (24,019)
Total non-recourse property debt, net$3,866,702
 $3,822,141
Fixed rateFixed-rate property debt matures at various dates through February 2061, and has interest rates that range from 2.28% to 8.50%, with a weighted average interest rate of 5.10%4.84%. Principal and interest on fixed-rate debt are generally payable monthly or in monthly interest-only payments with balloon payments due at maturity. At December 31, 2015,2016, each of our fixed ratefixed-rate loans payable related to apartment communities classified as held for use were secured by one of 153151 apartment communities that had an aggregate gross book value of $6.7$7.0 billion.
Variable rateVariable-rate property debt matures at various dates through July 2033, and hashad interest rates that rangeranged from 0.05%0.62% to 1.86%2.07%, as of December 31, 2016, with a weighted average interest rate of 1.55%.1.82% at December 31, 2016. Principal and interest on thisvariable-rate debt isare generally payable in semi-annual installments with balloon payments due at maturity. AtAs of December 31, 2015,2016, our variable ratevariable-rate property debt related to apartment communities classified as held for use were each secured by one of fourseven apartment communities that had an aggregate gross book value of $165.8$201.6 million.


F-26


Our non-recourse property debt instruments contain covenants common to the type of borrowing, and at December 31, 2015,2016, we were in compliance with all such covenants.
As of December 31, 2015,2016, the scheduled principal amortization and maturity payments for our non-recourse property debt related to apartment communities classified as held for use arewere as follows (in thousands):
Amortization Maturities TotalAmortization Maturities Total
2016$76,798
 $249,175
 $325,973
201775,472
 325,853
 401,325
$86,357
 $260,162
 $346,519
201873,698
 207,616
 281,314
86,644
 207,616
 294,260
201968,418
 518,323
 586,741
81,434
 481,136
 562,570
202061,731
 303,741
 365,472
74,955
 303,741
 378,696
202157,862
 753,383
 811,245
Thereafter    1,885,335
    1,496,357
    $3,846,160
    $3,889,647
As of December 31, 2015, our unencumbered pool included 25 consolidated apartment communities and had an estimated fair value of $1.8 billion. At December 31, 2015, we also had two recently acquired consolidated apartment communities which we anticipate encumbering but for which financing was not yet in place.
Credit Agreement
We have a Senior Secured Credit AgreementIn December 2016, we entered into an amended and restated senior secured credit agreement with a syndicate of financial institutions, which we refer to as the Credit Agreement. Our Credit Agreement provides for $600.0$600.0 million of revolving loan commitments. Borrowings under the Credit Agreement bear interest at a rate set forth on a pricing grid, which rate varies based on our leverage (either at LIBOR,credit rating as assigned by specified rating agencies (LIBOR, plus 1.35%1.20%, or, at our option, Prime plus 0.35%0.20% at December 31, 2015)2016). The Credit Agreement matures in September 2017, and may be extended for an additional one-year period, subject to certain conditions.January 2022. The Credit Agreement provides that we may make distributions to our investors during any four consecutive quarters in an aggregate amount that does not exceed the greater of 95% of our 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.
As of December 31, 2016 and 2015, we had $17.9 million and $27.0 million of outstanding borrowings under our Credit Agreement, and we had the capacity to borrow $536.6 million, netrespectively. As of theDecember 31, 2016, after outstanding borrowings and $36.4$11.8 million forof undrawn letters of credit backed by the Credit Agreement.Agreement, our borrowing capacity was $570.3 million. The interest rate on our outstanding borrowings was 2.09% and 1.59% at December 31, 2015.2016 and 2015, respectively.
Note 5 — Commitments and Contingencies
Commitments
In connection with our redevelopment, development and capital improvement activities, we have entered into various construction-related contracts and we have made commitments to complete redevelopment of certain apartment communities, pursuant to financing or other arrangements. As of December 31, 2016, our commitments related to these capital activities totaled approximately $89.5 million, most of which we expect to incur during the next 12 months.
We enter into certain commitments for future purchases of goods and services in connection with the operations of our apartment communities. Those commitments generally have terms of one year or less and reflect expenditure levels comparable to our historical expenditures.
Tax Credit Arrangements
We are required to manage certain consolidated real estate partnerships in compliance with various laws, regulations and contractual provisions that apply to our historic and low-income housing tax credit syndication arrangements. In some instances, noncompliance with applicable requirements could result in projected tax benefits not being realized and require a refund or reduction of investor capital contributions, which are reported as deferred income in our consolidated balance sheet, until such time as our obligation to deliver tax benefits is relieved. The remaining compliance periods for our tax credit syndication arrangements range from less than one year to 9 years. We do not anticipate that any material refunds or reductions of investor capital contributions will be required in connection with these arrangements.
Legal Matters
In addition to the matters described below, we are a party to various legal actions and administrative proceedings arising in the ordinary course of business, some of which are covered by our general liability insurance program, and none of which we expect to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.
Limited Partnerships
In connection with our acquisitions of interests in real estate partnerships, we are sometimes subject to legal actions, including allegations that such activities may involve breaches of fiduciary duties to the partners of such real estate partnerships or violations of the relevant partnership agreements. We may incur costs in connection with the defense or settlement of such litigation. We believe that we comply with our fiduciary obligations and relevant partnership agreements. Although the outcome of any litigation is uncertain, we do not expect any such legal actions to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.

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 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 for 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.
We are engaged in discussions with the Environmental Protection Agency, or EPA, and the Indiana Department of Environmental Management, or IDEM, regarding contaminated groundwater in a residential area in the vicinity of an Indiana apartment community that has not been owned by us since 2008. The contamination allegedly derives from a dry cleaner that operated on our former property, prior to our ownership. We have undertaken a voluntary remediation of the dry cleaner contamination under IDEM’s oversight, and in previous years accrued our share of the then estimated cleanup and abatement costs. However, in September 2016 EPA listed our former community and a number of properties in the vicinity on the National Priorities List, or NPL, (i.e. as a Superfund site), and IDEM has formally sought to terminate us from the voluntary remediation program.  We have filed a formal appeal with the EPA opposing the listing and already appealed IDEM’s decision to terminate us from the voluntary remediation program. Based on the information learned through December 31, 2016, we believe that our share of the estimated cleanup and abatement costs associated with the Superfund site listing, as it is currently listed, has increased. As such, we increased our accrual for such costs. This accrual did not have a material effect on our consolidated results of operations. Although the outcome of these processes are uncertain, we do not expect their resolution to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.
We also have been contacted by regulators and the current owner of a property in Lake Tahoe regarding environmental issues allegedly stemming from the historic operation of a dry cleaner.  An entity owned by us was the former general partner of a now-dissolved company that previously owned the dry cleaner site. That entity and the current property owner have been remediating the dry cleaner site since 2009, under the oversight of the Lahontan Regional Water Quality Control Board, or Lahontan. In July 2016, Lahontan sent us, the current property owner and a former operator of the dry cleaner a proposed cleanup and abatement order that rejects technical and legal arguments we previously made to Lahontan, and which if entered, would require all three parties to perform additional groundwater investigation and corrective actions with respect to onsite and offsite contamination. We have filed comments on the proposed order and a similar order previously proposed by Lahontan, but no final order has been issued to date. We also have responded to technical inquiries from the local water district and local water purveyors allegedly impacted by the dry cleaner contamination, who are leading a parallel effort to develop and implement remedial alternatives for addressing groundwater contamination that allegedly migrated from the dry cleaner. Based on the information learned to date, during the year ended December 31, 2016, we accrued our share of the estimated cleanup and abatement costs. This accrual did not have a material effect on our consolidated results of operations. Although the outcome of this process is uncertain, we do not expect its resolution to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.
We have determined that our legal obligations to remove or remediate certain potentially hazardous materials may be conditional asset retirement obligations, as defined in GAAP. Except in limited circumstances where the asset retirement activities are expected to be performed in connection with a planned redevelopment or apartment community casualty, we believe that the fair value of our asset retirement obligations cannot be reasonably estimated due to significant uncertainties in the timing and manner of settlement of those obligations. Asset retirement obligations that are reasonably estimable as of December 31, 2016, are immaterial to our consolidated financial condition, results of operations and cash flows.

Operating Leases
We are obligated under non-cancelable operating leases for office space and equipment. We are also obligated under non-cancelable operating leases for the ground under certain of our apartment communities with remaining terms ranging from 40 years to 71 years. Approximate minimum annual rental payments under operating leases are as follows (in thousands):
 Office and Equipment Lease Obligations Ground Lease Obligations Total Operating Lease Obligations
2017$2,559
 $1,093
 $3,652
20181,278
 1,193
 2,471
2019244
 1,293
 1,537
2020153
 1,529
 1,682
2021
 1,565
 1,565
Thereafter
 81,384
 81,384
Total$4,234
 $88,057
 $92,291
Substantially all of the office space subject to the operating leases in the table above is for the use of our corporate offices and area operations. Rent expense recognized totaled $3.3 million, $3.2 million and $3.3 million for the years ended December 31, 2016, 2015 and 2014, respectively. Rent expense recognized for the ground leases totaled $1.7 million, $0.9 million and $1.0 million for the years ended December 31, 2016, 2015 and 2014, respectively and is included within interest expense in the accompanying statements of operations.
Note 6 — Aimco Equity
Preferred Stock
At December 31, 2016 and 2015, Aimco had the following classes of perpetual preferred stock outstanding (dollars in thousands):
 Redemption 
Annual Dividend Rate Per Share
(paid quarterly)
 Balance at December 31,
 Date (1)  2016 2015
Class A Cumulative Preferred Stock, 5,000,000 shares authorized and 5,000,000 shares issued/outstanding5/17/2019 6.88% $125,000
 $125,000
Class Z Cumulative Preferred Stock, 4,800,000 shares authorized and zero and 1,391,643 shares issued/outstanding, respectively7/29/2016 7.00% 
 34,126
Preferred stock per consolidated balance sheets    $125,000
 $159,126
(1)All classes of preferred stock are or were redeemable at our option on and after the dates specified.
Amico’s Class A Preferred Stock has a $0.01 per share par value, is senior to Aimco’s Common Stock and has a liquidation preference per share of $25.00. The holders of Preferred Stock are generally not entitled to vote on matters submitted to stockholders. Dividends on Class A Preferred Stock are subject to declaration by Aimco’s Board of Directors.
The following table summarizes our issuances of preferred stock during the year ended December 31, 2014 (dollars in thousands, except per share amounts):
 Class A Cumulative Preferred Stock Class Z Cumulative Preferred Stock
Number of shares of preferred stock issued5,000,000
 117,400
Price to public per share$25.00
 $25.65
Underwriting discounts, commissions and transaction costs per share$0.85
 $0.51
Net proceeds per share$24.15
 $25.14
Net proceeds to Aimco$120,757
 $2,901
Issuance costs (primarily underwriting commissions) recognized as an adjustment of additional paid-in capital$4,350
 $110
In connection with these issuances of Aimco preferred stock, Aimco contributed the net proceeds to the Aimco Operating Partnership in exchange for an equal number of the corresponding class of partnership preferred units. 

During the year ended December 31, 2016, Aimco redeemed all of the outstanding shares of its Class Z Cumulative Preferred Stock at a redemption value of $34.8 million. We reflected the $0.7 million excess of the redemption value over the carrying amount and $1.3 million of issuance costs previously recorded as a reduction of additional paid-in capital as an adjustment of net income attributable to preferred stockholders for the year ended December 31, 2016.
During the year ended December 31, 2015, Aimco redeemed the remaining outstanding shares, or $27.0 million in liquidation preference, of its Series A Community Reinvestment Act, or CRA, Preferred Stock. We reflected $0.7 million of issuance costs previously recorded as a reduction of additional paid-in capital as an adjustment of net income attributable to preferred stockholders for the year ended December 31, 2015. During the year ended December 31, 2014, Aimco repurchased 20 shares, or $10.0 million in liquidation preference, of its CRA Preferred Stock for cash totaling $9.5 million. We reflected the $0.5 million excess of the carrying value over the repurchase price, offset by $0.3 million of issuance costs previously recorded as a reduction of additional paid-in capital, as an adjustment of net income attributable to preferred stockholders for the year ended December 31, 2014.
In connection with these redemptions and repurchase of Aimco preferred stock, the Aimco Operating Partnership redeemed or repurchased from Aimco a number of Partnership Preferred Units equal to the number of shares redeemed or repurchased by Aimco.
Common Stock
During the years ended December 31, 2016, 2015 and 2014, Aimco declared dividends per common share of $1.32, $1.18 and $1.04, respectively.
During the year ended December 31, 2015, Aimco issued 9,430,000 shares of its Common Stock, par value $0.01 per share, in an underwritten public offering, for net proceeds per share of $38.90. The offering generated net proceeds to Aimco of $366.6 million, net of issuance costs. Aimco contributed the net proceeds from the sale of Common Stock to the Aimco Operating Partnership in exchange for a number of common partnership units equal to the number of shares of Common Stock issued. Using the proceeds from this offering, during the year ended December 31, 2015, we repaid the then outstanding balance on our Credit Agreement, expanded our unencumbered pool, funded redevelopment and property upgrades investments that would otherwise have been funded with property debt and redeemed the remaining outstanding shares of our CRA Preferred Stock.
Registration Statements
Pursuant to an At-The-Market offering program active at December 31, 2016, Aimco had the capacity to issue up to 3.5 million additional shares of its Common Stock. In the event of any such issuances by Aimco, the Aimco Operating Partnership would issue to Aimco a corresponding number of common partnership units in exchange for the proceeds.
Additionally, Aimco and the Aimco Operating Partnership have a shelf registration statement that provides for the issuance of debt and equity securities by Aimco and debt securities by the Aimco Operating Partnership.
Note 7 — Partners’ Capital
Partnership Preferred Units Owned by Aimco
At December 31, 2016 and 2015, the Aimco Operating Partnership had outstanding preferred units in classes and amounts similar to Aimco’s Preferred Stock discussed in Note 6, or Partnership Preferred Units. All of these classes of Partnership Preferred Units were owned by Aimco during the periods presented.
All classes of Partnership Preferred Units are pari passu with each other and are senior to the Aimco Operating Partnership’s common partnership units. None of the classes of Partnership Preferred Units have any voting rights, except the right to approve certain changes to the Aimco Operating Partnership’s Partnership Agreement that would adversely affect holders of such class of units. Distributions on all Partnership Preferred Units are subject to being declared by the General Partner. All classes of the Partnership Preferred Units are redeemable by the Aimco Operating Partnership only in connection with a concurrent redemption by Aimco of the corresponding classes of Aimco Preferred Stock held by unrelated parties.
As discussed in Note 6, during the years ended December 31, 2016, 2015 and 2014, Aimco completed various Preferred Stock issuances, redemptions and repurchases. In connection with these transactions, the Aimco Operating Partnership issued to Aimco or redeemed or repurchased from Aimco a corresponding number of Partnership Preferred Units.

Redeemable Partnership Preferred Units
In addition to the Partnership Preferred Units owned by Aimco, the Aimco Operating Partnership has outstanding various classes of redeemable Partnership Preferred Units owned by third parties, which we refer to as preferred OP Units. As of December 31, 2016 and 2015, the Aimco Operating Partnership had the following classes of preferred OP Units (stated at their redemption values, in thousands, except unit and per unit data):
 Distributions per Annum Units Issued and Outstanding Redemption Values
Class of Preferred UnitsPercent Per Unit 2016 2015 2016 2015
Class One8.75% $8.00
 90,000
 90,000
 $8,229
 $8,229
Class Two1.92% $0.48
 17,750
 18,124
 444
 453
Class Three7.88% $1.97
 1,341,289
 1,341,289
 33,532
 33,532
Class Four8.00% $2.00
 644,954
 644,954
 16,124
 16,124
Class Six8.50% $2.13
 780,036
 790,883
 19,501
 19,772
Class Seven7.87% $1.97
 27,960
 27,960
 699
 699
Class Nine6.00% $1.50
 306,890
 364,668
 7,672
 9,117
Class Ten6.00% $1.50
 680,000
 
 17,000
 
Total    3,888,879
 3,277,878
 $103,201
 $87,926
The Class One through Class Nine preferred OP Units are currently redeemable at the holders’ option. The Class Ten preferred OP Units are redeemable after August 16, 2017, at the holder’s option. The Aimco Operating Partnership, at its sole discretion, may settle such redemption requests in cash or cause Aimco to issue shares of its Common Stock with a value equal to the redemption price. In the event the Aimco Operating Partnership requires Aimco to issue shares of Common Stock to settle a redemption request, the Aimco Operating Partnership would issue to Aimco a corresponding number of common partnership units. The Aimco Operating Partnership has a redemption policy that requires cash settlement of redemption requests for the redeemable preferred OP Units, subject to limited exceptions. Subject to certain conditions, the Class Four and Class Six preferred OP Units are convertible into common OP Units.
These redeemable units are classified within temporary equity in Aimco’s consolidated balance sheets and within temporary capital in the Aimco Operating Partnership’s consolidated balance sheets.
During the years ended December 31, 2016, 2015 and 2014, approximately 69,000, 700 and 12,600 preferred OP Units, respectively, were tendered for redemption in exchange for cash, and no preferred OP Units were tendered for redemption in exchange for shares of Aimco Common Stock.
The Class Ten and Class Nine preferred OP Units were issued as partial consideration for acquisitions during the years ended December 31, 2016 and 2014, respectively.
The following table presents a reconciliation of the Aimco Operating Partnership’s preferred OP Units during the years ended December 31, 2016, 2015 and 2014 (dollars in thousands).
 2016 2015 2014
Balance at January 1$87,926
 $87,937
 $79,953
Preferred distributions(7,239) (6,943) (6,409)
Redemption of preferred units and other(1,725) (11) (1,221)
Issuance of preferred units17,000
 
 9,117
Net income7,239
 6,943
 6,497
Balance at December 31$103,201
 $87,926
 $87,937
Common Partnership Units
In the Aimco Operating Partnership’s consolidated balance sheets, the common partnership units held by Aimco are classified within Partners’ Capital as General Partner and Special Limited Partner capital and the common OP Units are classified within Limited Partners’ capital. In Aimco’s consolidated balance sheets, the common OP Units are classified within permanent equity as common noncontrolling interests in the Aimco Operating Partnership.

Common partnership units held by Aimco are not redeemable whereas common OP Units are redeemable at the holders’ option, subject to certain restrictions, on the basis of one common OP Unit for either one share of Common Stock or cash equal to the fair value of a share of Common Stock at the time of redemption. Aimco has the option to deliver shares of Common Stock in exchange for all or any portion of the common OP Units tendered for redemption. When a limited partner redeems a common OP Unit for Common Stock, Limited Partners’ capital is reduced and the General Partner and Special Limited Partners’ capital is increased.
The holders of the common OP Units receive distributions, prorated from the date of issuance, in an amount equivalent to the dividends paid to holders of Common Stock. During the years ended December 31, 2016, 2015 and 2014, the Aimco Operating Partnership declared distributions per common unit of $1.32, $1.18 and $1.04, respectively.
During the years ended December 31, 2016, 2015 and 2014, approximately 248,000, 112,000 and 268,000 common OP Units, respectively, were redeemed in exchange for cash, and no common OP Units were redeemed in exchange for shares of Common Stock.
At December 31, 2016 and 2015, the Aimco Operating Partnership also had outstanding 2,339,950 high performance units, or HPUs. Effective January 1, 2017, the holders of HPUs may redeem these units on the basis of one HPU for either one share of Common Stock or cash equal to the fair value of a share of Common Stock at the time of redemption, at Aimco’s option. The holders of HPUs receive the same amount of distributions that are paid to holders of an equivalent number of common OP Units. The HPUs are classified within permanent capital as part of Limited Partners’ capital in the Aimco Operating Partnership’s consolidated balance sheets, and within permanent equity as part of common noncontrolling interests in the Aimco Operating Partnership within Aimco’s consolidated balance sheets.
Note 8 — Share-Based Compensation
We have a stock award and incentive program to attract and retain officers, key employees and independent directors. As of December 31, 2016, approximately 1.0 million shares were available for issuance under our 2015 Stock Award and Incentive Plan. The total number of shares available for issuance under this plan may be increased by an additional 0.6 million shares to the extent of any forfeiture, cancellation, exchange, surrender, termination or expiration of an award outstanding under our 2007 Stock Award and Incentive Plan. Awards under the 2015 plan may be in the form of incentive stock options, non-qualified stock options and restricted stock, or other types of awards as authorized under the plan.
Our plans are administered by the Compensation and Human Resources Committee of Aimco’s Board of Directors. In the case of stock options, the exercise price of the options granted may not be less than the fair market value of a share of Common Stock at the date of grant.
Total compensation cost recognized for stock based awards was $8.6 million, $7.2 million and $6.1 million for the years ended December 31, 2016, 2015 and 2014, respectively. Of these amounts, $1.0 million, $0.5 million and $0.3 million, respectively, were capitalized. At December 31, 2016, total unvested compensation cost not yet recognized was $13.0 million. We expect to recognize this compensation over a weighted average period of approximately 1.7 years.
We grant four different types of awards that are outstanding as of December 31, 2016. We grant stock options and restricted stock awards that are subject to time-based vesting and require continuous employment, typically over a period of four years from the grant date, and we refer to these awards as Time-Based Stock Options and Time-Based Restricted Stock, respectively. We also grant stock options and restricted stock awards that vest conditioned on Aimco’s total shareholder return, or TSR, relative to the NAREIT Apartment Index (60% weighting) and the MSCI US REIT Index (40% weighting) over a forward-looking performance period of three years, and we refer to these awards as TSR Stock Options and TSR Restricted Stock, respectively. Earned TSR Stock Options and TSR Restricted Stock, if any, will vest 50% on each of the third anniversary of the grant date and 50% on the fourth anniversary of the grant date, based on continued employment. The term of Time-Based Stock Options and TSR Stock Options is generally ten years from the date of grant.
We recognize compensation expense associated with Time-Based Stock Options and Time-Based Restricted Stock ratably over the requisite service periods, which are typically four years. We recognize compensation expense related to the TSR Stock Options and TSR Restricted Stock, which have graded vesting periods, over the requisite service period for each separate vesting tranche of the option, commencing on the grant date. The value of the TSR Stock Options and TSR Restricted Stock Awards take into consideration the probability that the options will ultimately vest; therefore previously recorded compensation expense is not adjusted in the event that the market condition is not achieved.

Stock Options
During the year ended December 31, 2016, we granted TSR Stock Options, and during and prior to the year ended December 31, 2015, we granted Time-Based Stock Options.
The following table summarizes activity for our outstanding stock options, for the years ended December 31, 2016, 2015 and 2014 (numbers of options in thousands):
 2016 2015 2014
 Number of Options Weighted
Average
Exercise
Price
 Number of Options Weighted
Average
Exercise
Price
 Number of Options Weighted
Average
Exercise
Price
Outstanding at beginning of year1,394
 $30.85
 1,640
 $28.91
 2,991
 $28.48
Granted216
 38.73
 239
 39.05
 
 
Exercised(934) 33.61
 (484) 28.33
 (1,347) 27.97
Forfeited(1) 29.11
 (1) 25.78
 (4) 25.45
Outstanding at end of year675
 $29.55
 1,394
 $30.85
 1,640
 $28.91
Exercisable at end of year280
 $16.38
 1,155
 $29.16
 1,640
 $28.91
The intrinsic value of a stock option represents the amount by which the current price of the underlying stock exceeds the exercise price of the option. As of December 31, 2016, options outstanding had an aggregate intrinsic value of $10.7 million and a weighted average remaining contractual term of 6.5 years. Options exercisable at December 31, 2016, had an aggregate intrinsic value of $8.1 million and a weighted average remaining contractual term of 3.3 years. The intrinsic value of stock options exercised during the years ended December 31, 2016, 2015 and 2014, was $11.1 million, $5.5 million and $10.0 million, respectively.
The weighted average grant date fair value of stock options granted during the years ended December 31, 2016 and 2015, was $9.94 and $6.97 per option, respectively.
Time-Based Restricted Stock Awards
The following table summarizes activity for Time-Based Restricted Stock awards, for the years ended December 31, 2016, 2015 and 2014 (numbers of shares in thousands):
 2016 2015 2014
 Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
Unvested at beginning of year339
 $29.96
 513
 $26.34
 575
 $25.28
Granted91
 40.03
 145
 39.39
 196
 26.69
Vested(181) 29.99
 (259) 27.54
 (238) 24.07
Forfeited
 
 (60) 32.29
 (20) 26.26
Unvested at end of year249
 $33.61
 339
 $29.96
 513
 $26.34
The aggregate fair value of shares that vested during the years ended December 31, 2016, 2015 and 2014 was $7.0 million, $10.4 million and $6.7 million, respectively.

TSR Restricted Stock Awards
The following table summarizes activity for TSR Restricted Stock awards for the years ended December 31, 2016 and 2015 (numbers of shares in thousands):
 2016 2015
 Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
Unvested at beginning of year123
 $39.72
 
 $
Granted91
 39.59
 142
 39.72
Forfeited
 
 (19) 39.72
Unvested at end of year214
 $39.66
 123
 $39.72
Determination of Grant-Date Fair Value of Awards
We estimated the fair value of TSR Stock Options granted in 2016 and TSR Restricted Stock granted in 2016 and 2015 using a Monte Carlo model using the assumptions set forth in the table below.
The risk-free interest rate reflects the annualized yield of a zero coupon U.S. Treasury security with a term equal to the expected term of the option. The expected dividend yield reflects expectations regarding cash dividend amounts per share paid on Aimco’s Common Stock during the expected term of the option. Expected volatility reflects an average of the historical volatility of Aimco’s Common Stock during the historical period commensurate with the expected term of the options that ended on the date of grant, and the implied volatility is calculated from observed call option contracts closest to the expected term. The derived vesting period of TSR Restricted Stock was determined based on the graded vesting terms. The expected term of the options was based on historical option exercises and post-vesting terminations. The midpoints of our valuation assumptions for the 2016 and 2015 grants were as follows:
 2016 2015
Grant date market value of a common share38.73
 39.05
Risk-free interest rate1.15% 1.04%
Dividend yield3.41% 2.87%
Expected volatility21.24% 19.48%
Derived vesting period of TSR Restricted Stock3.4 years
 3.4 years
Weighted average expected term of TSR Stock Options5.8 years
 n/a
We estimated the fair value of Time-Based Options granted during the year ended December 31, 2015, using a Black-Scholes closed-form valuation model using the assumptions set forth in the table below.
2015
Risk-free interest rate1.68%
Expected dividend yield2.87%
Expected volatility25.19%
Weighted average expected term of options5.5 years
The grant date fair value for the Time-Based Restricted Stock awards reflects the closing price of a common share on the grant date.

Note 9 — Income Taxes
Deferred income taxes reflect the net effects of temporary differences between the carrying amounts of assets and liabilities of the TRS entities for financial reporting purposes and the amounts used for income tax purposes. Significant components of our deferred tax liabilities and assets are as follows (in thousands):
 December 31,
 2016 2015
Deferred tax liabilities:   
Real estate and real estate partnership basis differences$72,726
 $31,726
Deferred tax assets:   
Net operating, capital and other loss carryforwards$8,873
 $8,024
Accruals and expenses7,537
 4,917
Tax credit carryforwards65,559
 49,036
Management contracts and other300
 333
Total deferred tax assets82,269
 62,310
Valuation allowance(4,467) (4,467)
Net deferred tax assets$5,076
 $26,117
A reconciliation of the beginning and ending balance of our unrecognized tax benefits is presented below (in thousands):
 2016 2015 2014
Balance at January 1$2,897
 $2,286
 $2,871
Additions (reductions) based on tax positions related to prior years and current year excess benefits related to stock-based compensation(611) 611
 (585)
Balance at December 31$2,286
 $2,897
 $2,286
Because the statute of limitations has not yet elapsed, our United States federal income tax returns for the year ended December 31, 2012, and subsequent years and certain of our State income tax returns for the year ended December 31, 2012, and subsequent years are currently subject to examination by the IRS or other taxing authorities. Approximately $2.3 million of the unrecognized benefit, if recognized, would affect the effective rate.
On March 19, 2014, the IRS notified the Aimco Operating Partnership of its intent to audit the 2011 and 2012 tax years. This audit remains in process as of December 31, 2016. We do not believe the audit will have any material effect on our unrecognized tax benefits, financial condition or results of operations.
Our policy is to include any interest and penalties related to income taxes within the income tax line item in our consolidated statements of operations.
In accordance with the accounting requirements for stock-based compensation, we may recognize tax benefits in connection with the exercise of stock options by employees of our TRS entities and the vesting of restricted stock awards. As of December 31, 2016, all cumulative excess tax benefits from employee stock option exercises and vested restricted stock awards had been realized. Beginning in 2017, we will recognize the tax effects related to stock-based compensation through earnings in the period the compensation is recorded. Refer to Recent Accounting Pronouncements section of Note 2 for additional information regarding this change.

Significant components of the income tax benefit or expense are as follows and are classified within income tax benefit in income before gain on dispositions and gain on dispositions of real estate, net of tax, in our consolidated statements of operations for the years ended December 31, 2016, 2015 and 2014 (in thousands):
 2016 2015 2014
Current:     
Federal$5,038
 $1,310
 $
State2,916
 1,357
 970
Total current7,954
 2,667
 970
      
Deferred:     
Federal(26,173) (27,382) 11,556
State(623) (1,052) 3,485
Total deferred(26,796) (28,434) 15,041
Total (benefit) expense$(18,842) $(25,767) $16,011
Classification:     
        Income before gain on dispositions$(25,208) $(27,524) $(20,047)
Gain on dispositions of real estate$6,366
 $1,757
 $36,058
Consolidated income or loss subject to tax consists of pretax income or loss of our TRS entities and income and gains retained by the REIT. For the years ended December 31, 2016, 2015 and 2014, we had $112.3consolidated net income subject to tax of $109.3 million, net loss subject to tax of $31.3 million and net income subject to tax of $137.0 million, respectively.
The reconciliation of income tax attributable to continuing and discontinued operations computed at the United States statutory rate to income tax (benefit) expense is shown below (dollars in thousands):
 2016 2015 2014
 Amount Percent Amount Percent Amount Percent
Tax at United States statutory rates on consolidated income or loss subject to tax$38,257
 35.0 % $(10,947) 35.0 % $47,950
 35.0 %
State income tax expense, net of federal tax (benefit) expense7,152
 6.5 % (361) 1.2 % 4,364
 3.2 %
Effect of permanent differences(132) (0.1)% (27) 0.1 % (154) (0.1)%
Tax effect of intercompany transactions (1)(47,369) (43.3)% (1,515) 4.8 % (23,969) (17.5)%
Tax credits(16,750) (15.3)% (13,583) 43.4 % (12,271) (9.0)%
Increase in valuation allowance
  % 666
 (2.1)% 91
 0.1 %
Total income tax (benefit) expense$(18,842) (17.2)% $(25,767) 82.4 % $16,011
 11.7 %
(1)
Includes the effect of intercompany asset transfers between the Aimco Operating Partnership and TRS entities, for which tax is deferred and recognized as the assets affect GAAP income or loss, for example, through depreciation, impairment, or upon the sale of the asset to a third-party. As discussed in Note 2, we expect to adopt the new accounting standard applicable to intercompany asset transfers effective January 1, 2017. As a result, the accumulated unrecognized deferred tax expense associated with historical intercompany transfers will be recognized as a cumulative effect adjustment through retained earnings at that time.
Income taxes paid totaled approximately $2.2 million, $2.0 million and $1.7 million, respectively, in the years ended December 31, 2016, 2015 and 2014, respectively.
At December 31, 2016, we had state net operating loss carryforwards, or NOLs, for which the deferred tax asset was approximately $8.0 million, before a valuation allowance of $4.5 million. The NOLs expire in years 2017 to 2033. Subject to certain separate return limitations, we may use these NOLs to offset a portion of state taxable income generated by our TRS entities. As of December 31, 2016, we had low-income housing and rehabilitation tax credit carryforwards and corresponding deferred tax asset of approximately $65.6 million for income tax purposes that expire in years 2024 to 2036.

For income tax purposes, dividends paid to holders of Common Stock primarily consist of ordinary income, capital gains, qualified dividends and unrecaptured Section 1250 gains, or a combination thereof. For the years ended December 31, 2016, 2015 and 2014, dividends per share held for the entire year were estimated to be taxable as follows:
 2016 2015 2014
 Amount Percentage Amount Percentage Amount Percentage
Ordinary income$0.45
 34.2% $0.36
 30.2% $0.01
 0.6%
Capital gains0.47
 35.4% 0.37
 31.3% 0.53
 51.6%
Qualified dividends0.13
 9.9% 0.17
 14.5% 
 %
Unrecaptured Section 1250 gain0.27
 20.5% 0.28
 24.0% 0.50
 47.8%
 $1.32
 100.0% $1.18
 100.0% $1.04
 100.0%
Note 10 — Earnings (Loss) per Share/Unit
Aimco calculates basic earnings per common share based on the weighted average number of shares of Common Stock and participating securities and calculates diluted earnings per share taking into consideration dilutive common stock equivalents and dilutive convertible securities outstanding borrowings under our Credit Agreement,during the period.
The Aimco Operating Partnership calculates earnings per common unit based on the weighted average number of common partnership units, participating securities and calculates diluted earnings per unit taking into consideration dilutive common unit equivalents and dilutive convertible securities outstanding during the period.
Our common stock equivalents and common partnership unit equivalents include options to purchase shares of Common Stock, which, if exercised, would result in Aimco’s issuance of additional shares and the interest rateAimco Operating Partnership’s issuance to Aimco of additional common partnership units equal to the number of shares purchased under the options. These equivalents also include unvested TSR restricted stock awards that do not meet the definition of participating securities, which would result in the issuance of additional common shares and common partnership units equal to the number of shares that vest. The effect of these securities was dilutive for the years ended December 31, 2016 and 2015, and accordingly has been included in the denominator for calculating diluted earnings per share and unit during these periods.
Our Time-Based Restricted Stock awards receive dividends similar to shares of Common Stock and common partnership units prior to vesting. These dividends are not forfeited in the event the restricted stock does not vest. Therefore, the unvested restricted shares related to these awards are participating securities. The effect of participating securities is included in basic and diluted earnings per share and unit computations using the two-class method of allocating distributed and undistributed earnings. At December 31, 2016, 2015 and 2014, there were 0.2 million, 0.3 million and 0.5 million shares of unvested participating restricted shares, respectively.
As discussed in Note 7, the Aimco Operating Partnership has various classes of preferred OP Units, which may be redeemed at the holders’ option. The Aimco Operating Partnership may redeem these units for cash, or at its option, shares of Common Stock. As of December 31, 2016, these preferred OP Units were potentially redeemable for approximately 2.3 million shares of Common Stock (based on our outstanding borrowings was 2.08%.the period end market price), or cash. The proceedsAimco Operating Partnership has a redemption policy that requires cash settlement of revolving loans are generally usedredemption requests for working capitalthe preferred OP Units, subject to limited exceptions. Accordingly, we have excluded these securities from earnings per share and other short-term purposes.unit computations for the periods presented above, and we expect to exclude them in future periods.
Note 611 — Fair Value Measurements
Recurring Fair Value Measurements
We measure at fair value on a recurring basis our investment in the securitization trust that holds certain of our property debt, which we classify as available for sale (AFS) securities, and our interest rate swaps. Information regarding these items measured at fair value,swaps, both of which are classified within Level 2 of the GAAP fair value hierarchy, is presented below (in thousands):hierarchy.
 AFS Investments Interest Rate Swaps Total
Fair value at December 31, 2013$58,408
 $(4,604) $53,804
Investment accretion3,827
 
 3,827
Unrealized losses included in interest expense
 (48) (48)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss
 1,685
 1,685
Unrealized losses included in equity and partners’ capital(1,192) (2,306) (3,498)
Fair value at December 31, 2014$61,043
 $(5,273) $55,770
Investment accretion4,245
 
 4,245
Unrealized losses included in interest expense
 (44) (44)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss
 1,678
 1,678
Unrealized gains (losses) included in equity and partners’ capital214
 (1,299) (1,085)
Fair value at December 31, 2015$65,502
 $(4,938) $60,564

F-27


Our investments classified as AFS are presented within other assets in the accompanying consolidated balance sheets. We hold positions in the securitization, which pay interest currently and we also hold the first loss position in the securitization, which accrues interest over the term of the investment. We are accreting the discount to the $100.9 million face value of the investments into interest income using the effective interest method over the remaining expected term of the investments, which as of December 31, 2015,2016, was approximately 5.44.4 years. Our amortized cost basis for these investments, which represents the original cost adjusted for interest accretion less interest payments received, was $67.8$72.5 million and $63.6$67.8 million at December 31, 20152016 and 2014,2015,

respectively. We estimated the fair value of these investments to be $76.1 million and $65.5 million at December 31, 2016 and 2015, respectively.
We estimate the fair value of these investments in accordance with GAAP using an income and market approach with primarily observable inputs, including yields and other information regarding similar types of investments, and adjusted for certain unobservable inputs specific to these investments. The fair value of the positions that pay interest currently which typically moves in an inverse relationship with the movements in interest rates, exceeded the amortized cost of these investments at the balance sheet dates.rates. The fair value of the first loss position which is lessprimarily correlated to movements in interest rates, was less than the amortized cost at the balance sheet dates. We currently expect to hold the investments to their maturity datescollateral quality and we believe we will fully recover our basis in the investments. Accordingly, we believe the current impairment in the fair value, as compared to the amortized cost basis, of the first loss position is temporary and we have not recognized any of the loss in value in earnings.demand for similar subordinate commercial mortgage-backed securities.
For our variable ratevariable-rate debt, we are sometimes required by limited partners in our consolidated real estate partnerships tosometimes require we limit our exposure to interest rate fluctuations by entering into interest rate swap agreements, which moderate our exposure to interest rate risk by effectively converting the interest on variable rate debt to a fixed rate. We estimate the fair value of interest rate swaps using an income approach with primarily observable inputs, including information regarding the hedged variable cash flows and forward yield curves relating to the variable interest rates on which the hedged cash flows are based.
The following table sets forth a summary of changes in fair value in our interest rate swaps (in thousands):
 Year Ended December 31,
 2016 2015 2014
Beginning liability balance$(4,938) $(5,273) $(4,604)
Unrealized losses included in interest expense(44) (44) (48)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss1,586
 1,678
 1,685
Unrealized gains (losses) included in equity and partners’ capital221
 (1,299) (2,306)
Ending liability balance$(3,175) $(4,938) $(5,273)
As of December 31, 20152016 and 2014,2015, we had interest rate swaps with aggregate notional amounts of $49.9$49.6 million and $50.3$49.9 million,, respectively. As of December 31, 2015,2016, these swaps had a weighted average remaining term of 5.04.0 years. We have designated these interest rate swaps as cash flow hedges. The fair value of these swaps is presented within accrued liabilities and other in our consolidated balance sheets, and we recognize any changes in the fair value as an adjustment of accumulated other comprehensive loss within equity and partners’ capital to the extent of their effectiveness.
If the forward rates at December 31, 2015,2016, remain constant, we estimate that during the next 12 months, we would reclassify into earnings approximately $1.7$1.3 million of the unrealized losses in accumulated other comprehensive loss. If market interest rates increase above the 3.43%3.44% weighted average fixed rate under these interest rate swaps we will benefit from net cash payments due to us from our counterparty to the interest rate swaps.
Fair Value DisclosuresOperating Leases
We are obligated under non-cancelable operating leases for office space and equipment. We are also obligated under non-cancelable operating leases for the ground under certain of our apartment communities with remaining terms ranging from 40 years to 71 years. Approximate minimum annual rental payments under operating leases are as follows (in thousands):
 Office and Equipment Lease Obligations Ground Lease Obligations Total Operating Lease Obligations
2017$2,559
 $1,093
 $3,652
20181,278
 1,193
 2,471
2019244
 1,293
 1,537
2020153
 1,529
 1,682
2021
 1,565
 1,565
Thereafter
 81,384
 81,384
Total$4,234
 $88,057
 $92,291
Substantially all of the office space subject to the operating leases in the table above is for the use of our corporate offices and area operations. Rent expense recognized totaled $3.3 million, $3.2 million and $3.3 million for the years ended December 31, 2016, 2015 and 2014, respectively. Rent expense recognized for the ground leases totaled $1.7 million, $0.9 million and $1.0 million for the years ended December 31, 2016, 2015 and 2014, respectively and is included within interest expense in the accompanying statements of operations.
Note 6 — Aimco Equity
Preferred Stock
At December 31, 2016 and 2015, Aimco had the following classes of perpetual preferred stock outstanding (dollars in thousands):
 Redemption 
Annual Dividend Rate Per Share
(paid quarterly)
 Balance at December 31,
 Date (1)  2016 2015
Class A Cumulative Preferred Stock, 5,000,000 shares authorized and 5,000,000 shares issued/outstanding5/17/2019 6.88% $125,000
 $125,000
Class Z Cumulative Preferred Stock, 4,800,000 shares authorized and zero and 1,391,643 shares issued/outstanding, respectively7/29/2016 7.00% 
 34,126
Preferred stock per consolidated balance sheets    $125,000
 $159,126
(1)All classes of preferred stock are or were redeemable at our option on and after the dates specified.
Amico’s Class A Preferred Stock has a $0.01 per share par value, is senior to Aimco’s Common Stock and has a liquidation preference per share of $25.00. The holders of Preferred Stock are generally not entitled to vote on matters submitted to stockholders. Dividends on Class A Preferred Stock are subject to declaration by Aimco’s Board of Directors.
The following table summarizes our issuances of preferred stock during the year ended December 31, 2014 (dollars in thousands, except per share amounts):
 Class A Cumulative Preferred Stock Class Z Cumulative Preferred Stock
Number of shares of preferred stock issued5,000,000
 117,400
Price to public per share$25.00
 $25.65
Underwriting discounts, commissions and transaction costs per share$0.85
 $0.51
Net proceeds per share$24.15
 $25.14
Net proceeds to Aimco$120,757
 $2,901
Issuance costs (primarily underwriting commissions) recognized as an adjustment of additional paid-in capital$4,350
 $110
In connection with these issuances of Aimco preferred stock, Aimco contributed the net proceeds to the Aimco Operating Partnership in exchange for an equal number of the corresponding class of partnership preferred units. 

During the year ended December 31, 2016, Aimco redeemed all of the outstanding shares of its Class Z Cumulative Preferred Stock at a redemption value of $34.8 million. We reflected the $0.7 million excess of the redemption value over the carrying amount and $1.3 million of issuance costs previously recorded as a reduction of additional paid-in capital as an adjustment of net income attributable to preferred stockholders for the year ended December 31, 2016.
During the year ended December 31, 2015, Aimco redeemed the remaining outstanding shares, or $27.0 million in liquidation preference, of its Series A Community Reinvestment Act, or CRA, Preferred Stock. We reflected $0.7 million of issuance costs previously recorded as a reduction of additional paid-in capital as an adjustment of net income attributable to preferred stockholders for the year ended December 31, 2015. During the year ended December 31, 2014, Aimco repurchased 20 shares, or $10.0 million in liquidation preference, of its CRA Preferred Stock for cash totaling $9.5 million. We reflected the $0.5 million excess of the carrying value over the repurchase price, offset by $0.3 million of issuance costs previously recorded as a reduction of additional paid-in capital, as an adjustment of net income attributable to preferred stockholders for the year ended December 31, 2014.
In connection with these redemptions and repurchase of Aimco preferred stock, the Aimco Operating Partnership redeemed or repurchased from Aimco a number of Partnership Preferred Units equal to the number of shares redeemed or repurchased by Aimco.
Common Stock
During the years ended December 31, 2016, 2015 and 2014, Aimco declared dividends per common share of $1.32, $1.18 and $1.04, respectively.
During the year ended December 31, 2015, Aimco issued 9,430,000 shares of its Common Stock, par value $0.01 per share, in an underwritten public offering, for net proceeds per share of $38.90. The offering generated net proceeds to Aimco of $366.6 million, net of issuance costs. Aimco contributed the net proceeds from the sale of Common Stock to the Aimco Operating Partnership in exchange for a number of common partnership units equal to the number of shares of Common Stock issued. Using the proceeds from this offering, during the year ended December 31, 2015, we repaid the then outstanding balance on our Credit Agreement, expanded our unencumbered pool, funded redevelopment and property upgrades investments that would otherwise have been funded with property debt and redeemed the remaining outstanding shares of our CRA Preferred Stock.
Registration Statements
Pursuant to an At-The-Market offering program active at December 31, 2016, Aimco had the capacity to issue up to 3.5 million additional shares of its Common Stock. In the event of any such issuances by Aimco, the Aimco Operating Partnership would issue to Aimco a corresponding number of common partnership units in exchange for the proceeds.
Additionally, Aimco and the Aimco Operating Partnership have a shelf registration statement that provides for the issuance of debt and equity securities by Aimco and debt securities by the Aimco Operating Partnership.
Note 7 — Partners’ Capital
Partnership Preferred Units Owned by Aimco
At December 31, 2016 and 2015, the Aimco Operating Partnership had outstanding preferred units in classes and amounts similar to Aimco’s Preferred Stock discussed in Note 6, or Partnership Preferred Units. All of these classes of Partnership Preferred Units were owned by Aimco during the periods presented.
All classes of Partnership Preferred Units are pari passu with each other and are senior to the Aimco Operating Partnership’s common partnership units. None of the classes of Partnership Preferred Units have any voting rights, except the right to approve certain changes to the Aimco Operating Partnership’s Partnership Agreement that would adversely affect holders of such class of units. Distributions on all Partnership Preferred Units are subject to being declared by the General Partner. All classes of the Partnership Preferred Units are redeemable by the Aimco Operating Partnership only in connection with a concurrent redemption by Aimco of the corresponding classes of Aimco Preferred Stock held by unrelated parties.
As discussed in Note 6, during the years ended December 31, 2016, 2015 and 2014, Aimco completed various Preferred Stock issuances, redemptions and repurchases. In connection with these transactions, the Aimco Operating Partnership issued to Aimco or redeemed or repurchased from Aimco a corresponding number of Partnership Preferred Units.

Redeemable Partnership Preferred Units
In addition to the Partnership Preferred Units owned by Aimco, the Aimco Operating Partnership has outstanding various classes of redeemable Partnership Preferred Units owned by third parties, which we refer to as preferred OP Units. As of December 31, 2016 and 2015, the Aimco Operating Partnership had the following classes of preferred OP Units (stated at their redemption values, in thousands, except unit and per unit data):
 Distributions per Annum Units Issued and Outstanding Redemption Values
Class of Preferred UnitsPercent Per Unit 2016 2015 2016 2015
Class One8.75% $8.00
 90,000
 90,000
 $8,229
 $8,229
Class Two1.92% $0.48
 17,750
 18,124
 444
 453
Class Three7.88% $1.97
 1,341,289
 1,341,289
 33,532
 33,532
Class Four8.00% $2.00
 644,954
 644,954
 16,124
 16,124
Class Six8.50% $2.13
 780,036
 790,883
 19,501
 19,772
Class Seven7.87% $1.97
 27,960
 27,960
 699
 699
Class Nine6.00% $1.50
 306,890
 364,668
 7,672
 9,117
Class Ten6.00% $1.50
 680,000
 
 17,000
 
Total    3,888,879
 3,277,878
 $103,201
 $87,926
The Class One through Class Nine preferred OP Units are currently redeemable at the holders’ option. The Class Ten preferred OP Units are redeemable after August 16, 2017, at the holder’s option. The Aimco Operating Partnership, at its sole discretion, may settle such redemption requests in cash or cause Aimco to issue shares of its Common Stock with a value equal to the redemption price. In the event the Aimco Operating Partnership requires Aimco to issue shares of Common Stock to settle a redemption request, the Aimco Operating Partnership would issue to Aimco a corresponding number of common partnership units. The Aimco Operating Partnership has a redemption policy that requires cash settlement of redemption requests for the redeemable preferred OP Units, subject to limited exceptions. Subject to certain conditions, the Class Four and Class Six preferred OP Units are convertible into common OP Units.
These redeemable units are classified within temporary equity in Aimco’s consolidated balance sheets and within temporary capital in the Aimco Operating Partnership’s consolidated balance sheets.
During the years ended December 31, 2016, 2015 and 2014, approximately 69,000, 700 and 12,600 preferred OP Units, respectively, were tendered for redemption in exchange for cash, and no preferred OP Units were tendered for redemption in exchange for shares of Aimco Common Stock.
The Class Ten and Class Nine preferred OP Units were issued as partial consideration for acquisitions during the years ended December 31, 2016 and 2014, respectively.
The following table presents a reconciliation of the Aimco Operating Partnership’s preferred OP Units during the years ended December 31, 2016, 2015 and 2014 (dollars in thousands).
 2016 2015 2014
Balance at January 1$87,926
 $87,937
 $79,953
Preferred distributions(7,239) (6,943) (6,409)
Redemption of preferred units and other(1,725) (11) (1,221)
Issuance of preferred units17,000
 
 9,117
Net income7,239
 6,943
 6,497
Balance at December 31$103,201
 $87,926
 $87,937
Common Partnership Units
In the Aimco Operating Partnership’s consolidated balance sheets, the common partnership units held by Aimco are classified within Partners’ Capital as General Partner and Special Limited Partner capital and the common OP Units are classified within Limited Partners’ capital. In Aimco’s consolidated balance sheets, the common OP Units are classified within permanent equity as common noncontrolling interests in the Aimco Operating Partnership.

Common partnership units held by Aimco are not redeemable whereas common OP Units are redeemable at the holders’ option, subject to certain restrictions, on the basis of one common OP Unit for either one share of Common Stock or cash equal to the fair value of a share of Common Stock at the time of redemption. Aimco has the option to deliver shares of Common Stock in exchange for all or any portion of the common OP Units tendered for redemption. When a limited partner redeems a common OP Unit for Common Stock, Limited Partners’ capital is reduced and the General Partner and Special Limited Partners’ capital is increased.
The holders of the common OP Units receive distributions, prorated from the date of issuance, in an amount equivalent to the dividends paid to holders of Common Stock. During the years ended December 31, 2016, 2015 and 2014, the Aimco Operating Partnership declared distributions per common unit of $1.32, $1.18 and $1.04, respectively.
During the years ended December 31, 2016, 2015 and 2014, approximately 248,000, 112,000 and 268,000 common OP Units, respectively, were redeemed in exchange for cash, and no common OP Units were redeemed in exchange for shares of Common Stock.
At December 31, 2016 and 2015, the Aimco Operating Partnership also had outstanding 2,339,950 high performance units, or HPUs. Effective January 1, 2017, the holders of HPUs may redeem these units on the basis of one HPU for either one share of Common Stock or cash equal to the fair value of a share of Common Stock at the time of redemption, at Aimco’s option. The holders of HPUs receive the same amount of distributions that are paid to holders of an equivalent number of common OP Units. The HPUs are classified within permanent capital as part of Limited Partners’ capital in the Aimco Operating Partnership’s consolidated balance sheets, and within permanent equity as part of common noncontrolling interests in the Aimco Operating Partnership within Aimco’s consolidated balance sheets.
Note 8 — Share-Based Compensation
We believehave a stock award and incentive program to attract and retain officers, key employees and independent directors. As of December 31, 2016, approximately 1.0 million shares were available for issuance under our 2015 Stock Award and Incentive Plan. The total number of shares available for issuance under this plan may be increased by an additional 0.6 million shares to the extent of any forfeiture, cancellation, exchange, surrender, termination or expiration of an award outstanding under our 2007 Stock Award and Incentive Plan. Awards under the 2015 plan may be in the form of incentive stock options, non-qualified stock options and restricted stock, or other types of awards as authorized under the plan.
Our plans are administered by the Compensation and Human Resources Committee of Aimco’s Board of Directors. In the case of stock options, the exercise price of the options granted may not be less than the fair market value of a share of Common Stock at the date of grant.
Total compensation cost recognized for stock based awards was $8.6 million, $7.2 million and $6.1 million for the years ended December 31, 2016, 2015 and 2014, respectively. Of these amounts, $1.0 million, $0.5 million and $0.3 million, respectively, were capitalized. At December 31, 2016, total unvested compensation cost not yet recognized was $13.0 million. We expect to recognize this compensation over a weighted average period of approximately 1.7 years.
We grant four different types of awards that are outstanding as of December 31, 2016. We grant stock options and restricted stock awards that are subject to time-based vesting and require continuous employment, typically over a period of four years from the grant date, and we refer to these awards as Time-Based Stock Options and Time-Based Restricted Stock, respectively. We also grant stock options and restricted stock awards that vest conditioned on Aimco’s total shareholder return, or TSR, relative to the NAREIT Apartment Index (60% weighting) and the MSCI US REIT Index (40% weighting) over a forward-looking performance period of three years, and we refer to these awards as TSR Stock Options and TSR Restricted Stock, respectively. Earned TSR Stock Options and TSR Restricted Stock, if any, will vest 50% on each of the third anniversary of the grant date and 50% on the fourth anniversary of the grant date, based on continued employment. The term of Time-Based Stock Options and TSR Stock Options is generally ten years from the date of grant.
We recognize compensation expense associated with Time-Based Stock Options and Time-Based Restricted Stock ratably over the requisite service periods, which are typically four years. We recognize compensation expense related to the TSR Stock Options and TSR Restricted Stock, which have graded vesting periods, over the requisite service period for each separate vesting tranche of the option, commencing on the grant date. The value of the TSR Stock Options and TSR Restricted Stock Awards take into consideration the probability that the options will ultimately vest; therefore previously recorded compensation expense is not adjusted in the event that the market condition is not achieved.

Stock Options
During the year ended December 31, 2016, we granted TSR Stock Options, and during and prior to the year ended December 31, 2015, we granted Time-Based Stock Options.
The following table summarizes activity for our outstanding stock options, for the years ended December 31, 2016, 2015 and 2014 (numbers of options in thousands):
 2016 2015 2014
 Number of Options Weighted
Average
Exercise
Price
 Number of Options Weighted
Average
Exercise
Price
 Number of Options Weighted
Average
Exercise
Price
Outstanding at beginning of year1,394
 $30.85
 1,640
 $28.91
 2,991
 $28.48
Granted216
 38.73
 239
 39.05
 
 
Exercised(934) 33.61
 (484) 28.33
 (1,347) 27.97
Forfeited(1) 29.11
 (1) 25.78
 (4) 25.45
Outstanding at end of year675
 $29.55
 1,394
 $30.85
 1,640
 $28.91
Exercisable at end of year280
 $16.38
 1,155
 $29.16
 1,640
 $28.91
The intrinsic value of a stock option represents the amount by which the current price of the underlying stock exceeds the exercise price of the option. As of December 31, 2016, options outstanding had an aggregate intrinsic value of $10.7 million and a weighted average remaining contractual term of 6.5 years. Options exercisable at December 31, 2016, had an aggregate intrinsic value of $8.1 million and a weighted average remaining contractual term of 3.3 years. The intrinsic value of stock options exercised during the years ended December 31, 2016, 2015 and 2014, was $11.1 million, $5.5 million and $10.0 million, respectively.
The weighted average grant date fair value of stock options granted during the years ended December 31, 2016 and 2015, was $9.94 and $6.97 per option, respectively.
Time-Based Restricted Stock Awards
The following table summarizes activity for Time-Based Restricted Stock awards, for the years ended December 31, 2016, 2015 and 2014 (numbers of shares in thousands):
 2016 2015 2014
 Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
Unvested at beginning of year339
 $29.96
 513
 $26.34
 575
 $25.28
Granted91
 40.03
 145
 39.39
 196
 26.69
Vested(181) 29.99
 (259) 27.54
 (238) 24.07
Forfeited
 
 (60) 32.29
 (20) 26.26
Unvested at end of year249
 $33.61
 339
 $29.96
 513
 $26.34
The aggregate fair value of shares that vested during the years ended December 31, 2016, 2015 and 2014 was $7.0 million, $10.4 million and $6.7 million, respectively.

TSR Restricted Stock Awards
The following table summarizes activity for TSR Restricted Stock awards for the years ended December 31, 2016 and 2015 (numbers of shares in thousands):
 2016 2015
 Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
Unvested at beginning of year123
 $39.72
 
 $
Granted91
 39.59
 142
 39.72
Forfeited
 
 (19) 39.72
Unvested at end of year214
 $39.66
 123
 $39.72
Determination of Grant-Date Fair Value of Awards
We estimated the fair value of TSR Stock Options granted in 2016 and TSR Restricted Stock granted in 2016 and 2015 using a Monte Carlo model using the assumptions set forth in the table below.
The risk-free interest rate reflects the annualized yield of a zero coupon U.S. Treasury security with a term equal to the expected term of the option. The expected dividend yield reflects expectations regarding cash dividend amounts per share paid on Aimco’s Common Stock during the expected term of the option. Expected volatility reflects an average of the historical volatility of Aimco’s Common Stock during the historical period commensurate with the expected term of the options that ended on the date of grant, and the implied volatility is calculated from observed call option contracts closest to the expected term. The derived vesting period of TSR Restricted Stock was determined based on the graded vesting terms. The expected term of the options was based on historical option exercises and post-vesting terminations. The midpoints of our cashvaluation assumptions for the 2016 and cash equivalents, receivables and payables approximates their aggregate2015 grants were as follows:
 2016 2015
Grant date market value of a common share38.73
 39.05
Risk-free interest rate1.15% 1.04%
Dividend yield3.41% 2.87%
Expected volatility21.24% 19.48%
Derived vesting period of TSR Restricted Stock3.4 years
 3.4 years
Weighted average expected term of TSR Stock Options5.8 years
 n/a
We estimated the fair value of Time-Based Options granted during the year ended December 31, 2015, using a Black-Scholes closed-form valuation model using the assumptions set forth in the table below.
2015
Risk-free interest rate1.68%
Expected dividend yield2.87%
Expected volatility25.19%
Weighted average expected term of options5.5 years
The grant date fair value for the Time-Based Restricted Stock awards reflects the closing price of a common share on the grant date.

Note 9 — Income Taxes
Deferred income taxes reflect the net effects of temporary differences between the carrying amounts at of assets and liabilities of the TRS entities for financial reporting purposes and the amounts used for income tax purposes. Significant components of our deferred tax liabilities and assets are as follows (in thousands):
 December 31,
 2016 2015
Deferred tax liabilities:   
Real estate and real estate partnership basis differences$72,726
 $31,726
Deferred tax assets:   
Net operating, capital and other loss carryforwards$8,873
 $8,024
Accruals and expenses7,537
 4,917
Tax credit carryforwards65,559
 49,036
Management contracts and other300
 333
Total deferred tax assets82,269
 62,310
Valuation allowance(4,467) (4,467)
Net deferred tax assets$5,076
 $26,117
A reconciliation of the beginning and ending balance of our unrecognized tax benefits is presented below (in thousands):
 2016 2015 2014
Balance at January 1$2,897
 $2,286
 $2,871
Additions (reductions) based on tax positions related to prior years and current year excess benefits related to stock-based compensation(611) 611
 (585)
Balance at December 31$2,286
 $2,897
 $2,286
Because the statute of limitations has not yet elapsed, our United States federal income tax returns for the year ended December 31, 2012, and subsequent years and certain of our State income tax returns for the year ended December 31, 2012, and subsequent years are currently subject to examination by the IRS or other taxing authorities. Approximately $2.3 million of the unrecognized benefit, if recognized, would affect the effective rate.
On March 19, 2014, the IRS notified the Aimco Operating Partnership of its intent to audit the 2011 and 2012 tax years. This audit remains in process as of December 31, 2016. We do not believe the audit will have any material effect on our unrecognized tax benefits, financial condition or results of operations.
Our policy is to include any interest and penalties related to income taxes within the income tax line item in our consolidated statements of operations.
In accordance with the accounting requirements for stock-based compensation, we may recognize tax benefits in connection with the exercise of stock options by employees of our TRS entities and the vesting of restricted stock awards. As of December 31, 2016, all cumulative excess tax benefits from employee stock option exercises and vested restricted stock awards had been realized. Beginning in 2017, we will recognize the tax effects related to stock-based compensation through earnings in the period the compensation is recorded. Refer to Recent Accounting Pronouncements section of Note 2 for additional information regarding this change.

Significant components of the income tax benefit or expense are as follows and are classified within income tax benefit in income before gain on dispositions and gain on dispositions of real estate, net of tax, in our consolidated statements of operations for the years ended December 31, 2016, 2015 and 2014 (in thousands):
 2016 2015 2014
Current:     
Federal$5,038
 $1,310
 $
State2,916
 1,357
 970
Total current7,954
 2,667
 970
      
Deferred:     
Federal(26,173) (27,382) 11,556
State(623) (1,052) 3,485
Total deferred(26,796) (28,434) 15,041
Total (benefit) expense$(18,842) $(25,767) $16,011
Classification:     
        Income before gain on dispositions$(25,208) $(27,524) $(20,047)
Gain on dispositions of real estate$6,366
 $1,757
 $36,058
Consolidated income or loss subject to tax consists of pretax income or loss of our TRS entities and income and gains retained by the REIT. For the years ended December 31, 2016, 2015 and 2014, we had consolidated net income subject to tax of $109.3 million, net loss subject to tax of $31.3 million and net income subject to tax of $137.0 million, respectively.
The reconciliation of income tax attributable to continuing and discontinued operations computed at the United States statutory rate to income tax (benefit) expense is shown below (dollars in thousands):
 2016 2015 2014
 Amount Percent Amount Percent Amount Percent
Tax at United States statutory rates on consolidated income or loss subject to tax$38,257
 35.0 % $(10,947) 35.0 % $47,950
 35.0 %
State income tax expense, net of federal tax (benefit) expense7,152
 6.5 % (361) 1.2 % 4,364
 3.2 %
Effect of permanent differences(132) (0.1)% (27) 0.1 % (154) (0.1)%
Tax effect of intercompany transactions (1)(47,369) (43.3)% (1,515) 4.8 % (23,969) (17.5)%
Tax credits(16,750) (15.3)% (13,583) 43.4 % (12,271) (9.0)%
Increase in valuation allowance
  % 666
 (2.1)% 91
 0.1 %
Total income tax (benefit) expense$(18,842) (17.2)% $(25,767) 82.4 % $16,011
 11.7 %
(1)
Includes the effect of intercompany asset transfers between the Aimco Operating Partnership and TRS entities, for which tax is deferred and recognized as the assets affect GAAP income or loss, for example, through depreciation, impairment, or upon the sale of the asset to a third-party. As discussed in Note 2, we expect to adopt the new accounting standard applicable to intercompany asset transfers effective January 1, 2017. As a result, the accumulated unrecognized deferred tax expense associated with historical intercompany transfers will be recognized as a cumulative effect adjustment through retained earnings at that time.
Income taxes paid totaled approximately $2.2 million, $2.0 million and 2014$1.7 million, duerespectively, in the years ended December 31, 2016, 2015 and 2014, respectively.
At December 31, 2016, we had state net operating loss carryforwards, or NOLs, for which the deferred tax asset was approximately $8.0 million, before a valuation allowance of $4.5 million. The NOLs expire in years 2017 to their relatively short-term nature2033. Subject to certain separate return limitations, we may use these NOLs to offset a portion of state taxable income generated by our TRS entities. As of December 31, 2016, we had low-income housing and high probabilityrehabilitation tax credit carryforwards and corresponding deferred tax asset of realization. approximately $65.6 million for income tax purposes that expire in years 2024 to 2036.

For income tax purposes, dividends paid to holders of Common Stock primarily consist of ordinary income, capital gains, qualified dividends and unrecaptured Section 1250 gains, or a combination thereof. For the years ended December 31, 2016, 2015 and 2014, dividends per share held for the entire year were estimated to be taxable as follows:
 2016 2015 2014
 Amount Percentage Amount Percentage Amount Percentage
Ordinary income$0.45
 34.2% $0.36
 30.2% $0.01
 0.6%
Capital gains0.47
 35.4% 0.37
 31.3% 0.53
 51.6%
Qualified dividends0.13
 9.9% 0.17
 14.5% 
 %
Unrecaptured Section 1250 gain0.27
 20.5% 0.28
 24.0% 0.50
 47.8%
 $1.32
 100.0% $1.18
 100.0% $1.04
 100.0%
Note 10 — Earnings (Loss) per Share/Unit
Aimco calculates basic earnings per common share based on the weighted average number of shares of Common Stock and participating securities and calculates diluted earnings per share taking into consideration dilutive common stock equivalents and dilutive convertible securities outstanding during the period.
The Aimco Operating Partnership calculates earnings per common unit based on the weighted average number of common partnership units, participating securities and calculates diluted earnings per unit taking into consideration dilutive common unit equivalents and dilutive convertible securities outstanding during the period.
Our common stock equivalents and common partnership unit equivalents include options to purchase shares of Common Stock, which, if exercised, would result in Aimco’s issuance of additional shares and the Aimco Operating Partnership’s issuance to Aimco of additional common partnership units equal to the number of shares purchased under the options. These equivalents also include unvested TSR restricted stock awards that do not meet the definition of participating securities, which would result in the issuance of additional common shares and common partnership units equal to the number of shares that vest. The effect of these securities was dilutive for the years ended December 31, 2016 and 2015, and accordingly has been included in the denominator for calculating diluted earnings per share and unit during these periods.
Our Time-Based Restricted Stock awards receive dividends similar to shares of Common Stock and common partnership units prior to vesting. These dividends are not forfeited in the event the restricted stock does not vest. Therefore, the unvested restricted shares related to these awards are participating securities. The effect of participating securities is included in basic and diluted earnings per share and unit computations using the two-class method of allocating distributed and undistributed earnings. At December 31, 2016, 2015 and 2014, there were 0.2 million, 0.3 million and 0.5 million shares of unvested participating restricted shares, respectively.
As discussed in Note 7, the Aimco Operating Partnership has various classes of preferred OP Units, which may be redeemed at the holders’ option. The Aimco Operating Partnership may redeem these units for cash, or at its option, shares of Common Stock. As of December 31, 2016, these preferred OP Units were potentially redeemable for approximately 2.3 million shares of Common Stock (based on the period end market price), or cash. The Aimco Operating Partnership has a redemption policy that requires cash settlement of redemption requests for the preferred OP Units, subject to limited exceptions. Accordingly, we have excluded these securities from earnings per share and unit computations for the periods presented above, and we expect to exclude them in future periods.
Note 11 — Fair Value Measurements
Recurring Fair Value Measurements
We measure at fair value on a recurring basis our investment in the securitization trust that holds certain of our property debt, which we classify as available for sale (AFS) securities, and our interest rate swaps, both of which are classified within Level 2 of the GAAP fair value hierarchy.
Our investments classified as AFS are presented within other assets in the accompanying consolidated balance sheets. We hold positions in the securitization, which pay interest currently and we also hold the first loss position in the securitization, which accrues interest over the term of the investment. We are accreting the discount to the $100.9 million face value of the investments into interest income using the effective interest method over the remaining expected term of the investments, which as of December 31, 2016, was approximately 4.4 years. Our amortized cost basis for these investments, which represents the original cost adjusted for interest accretion less interest payments received, was $72.5 million and $67.8 million at December 31, 2016 and 2015,

respectively. We estimated aggregatethe fair value of our consolidated total indebtedness was approximately $4.0 billionthese investments to be $76.1 million and $4.4 billion$65.5 million at December 31, 20152016 and 2014, respectively, as compared to aggregate carrying amounts of $3.9 billion and $4.1 billion,2015, respectively. Substantially all of the difference between the fair value and the carrying value relates to apartment communities we wholly own.
We estimate the fair value of our consolidated debtthese investments in accordance with GAAP using an income and market approach with primarily observable inputs, including comparisonyields and other information regarding similar types of investments, and adjusted for certain unobservable inputs specific to these investments. The fair value of the contractual termspositions that pay interest currently typically moves in an inverse relationship with movements in interest rates. The fair value of the first loss position is primarily correlated to observablecollateral quality and unobservable inputs such as marketdemand for similar subordinate commercial mortgage-backed securities.
For our variable-rate debt, limited partners in our consolidated real estate partnerships sometimes require we limit our exposure to interest rate fluctuations by entering into interest rate swap agreements, which moderate our exposure to interest rate risk spreads, contractualby effectively converting the interest rates, remaining periodson variable rate debt to maturity, collateral quality and loan to value ratios on similarly encumbered assets within our portfolio.a fixed rate. We classifyestimate the fair value of interest rate swaps using an income approach with primarily observable inputs, including information regarding the hedged variable cash flows and forward yield curves relating to the variable interest rates on which the hedged cash flows are based.
The following table sets forth a summary of changes in fair value in our interest rate swaps (in thousands):
 Year Ended December 31,
 2016 2015 2014
Beginning liability balance$(4,938) $(5,273) $(4,604)
Unrealized losses included in interest expense(44) (44) (48)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss1,586
 1,678
 1,685
Unrealized gains (losses) included in equity and partners’ capital221
 (1,299) (2,306)
Ending liability balance$(3,175) $(4,938) $(5,273)
As of December 31, 2016 and 2015, we had interest rate swaps with aggregate notional amounts of $49.6 million and $49.9 million, respectively. As of December 31, 2016, these swaps had a weighted average remaining term of 4.0 years. We have designated these interest rate swaps as cash flow hedges. The fair value of these swaps is presented within accrued liabilities and other in our consolidated debt within Level 3 of the GAAP valuation hierarchy based on the significance of certain of the unobservable inputs used to estimate their fair values.
Note 7 — Commitments and Contingencies
Commitments
In connection with our development, redevelopment and capital improvement activities, we have entered into various construction-related contractsbalance sheets, and we have made commitmentsrecognize any changes in the fair value as an adjustment of accumulated other comprehensive loss within equity and partners’ capital to complete certain projects, pursuant to financing or other arrangements. Asthe extent of their effectiveness.
If the forward rates at December 31, 2015, our commitments related to these capital activities totaled approximately $110.0 million, most of which2016, remain constant, we expect to incurestimate that during the next 12 months. Our commitments related to our One Canal development project will be funded in part by a $114.0months, we would reclassify into earnings approximately $1.3 million non-recourse property loan, of which $27.8 million was available to draw at December 31, 2015.
During July 2015, we entered into a contract to acquire an apartment community currently under construction in Northern California for $320.0 million, for which we have provided a nonrefundable deposit of $25.0 million.  The acquisition is expected

F-28


to close upon completion of construction in the summer of 2016. We intend to fund a portion of the acquisition through a property loan andunrealized losses in accumulated other comprehensive loss. If market interest rates increase above the balance with proceeds3.44% weighted average fixed rate under these interest rate swaps we will benefit from the sale of two apartment communities.
We enter into certain commitments for future purchases of goods and services in connection with the operations ofnet cash payments due to us from our apartment communities. Those commitments generally have terms of one year or less and reflect expenditure levels comparable to our historical expenditures.
Tax Credit Arrangements
We are required to manage certain consolidated real estate partnerships in compliance with various laws, regulations and contractual provisions that apply to our historic and low-income housing tax credit syndication arrangements. In some instances, noncompliance with applicable requirements could result in projected tax benefits not being realized and require a refund or reduction of investor capital contributions, which are reported as deferred income in our consolidated balance sheet, until such time as our obligation to deliver tax benefits is relieved. The remaining compliance periods for our tax credit syndication arrangements range from less than one year to 10 years. We do not anticipate that any material refunds or reductions of investor capital contributions will be required in connection with these arrangements.
Legal Matters
In additioncounterparty to the matters described below, we are a party to various legal actions and administrative proceedings arising in the ordinary course of business, some of which are covered by our general liability insurance program, and none of which we expect to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.interest rate swaps.
Limited Partnerships
In connection with our acquisitions of interests in real estate partnerships, we are sometimes subject to legal actions, including allegations that such activities may involve breaches of fiduciary duties to the partners of such real estate partnerships or violations of the relevant partnership agreements. We may incur costs in connection with the defense or settlement of such litigation. We believe that we comply with our fiduciary obligations and relevant partnership agreements. Although the outcome of any litigation is uncertain, we do not expect any such legal actions to have a material adverse effect on our consolidated financial condition, results of operations or cash flows.
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 in the land or buildings of an apartment community. Potentially hazardous materials may include polychlorinated biphenyls, petroleum-based fuels, lead-based paint, or asbestos. 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 for 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.
We are engaged in discussions with the Environmental Protection Agency, or EPA, regarding contaminated groundwater in a residential area in the vicinity of an Indiana apartment community that has not been owned by us since 2008.  The EPA alleges that we are liable for addressing the contamination in the residential area because a dry cleaner that operated on our former property, prior to our ownership, discharged hazardous materials into the sanitary sewers and the environment. We have undertaken a voluntary remediation of the dry cleaner contamination at our former property under the oversight of the Indiana Department of Environmental Management, or IDEM.  However, IDEM has formally sought to terminate us from the voluntary remediation, and we are presently appealing that termination.  Based on our review of the scientific data, we believe that the presence of hazardous materials in the separate residential area under review by the EPA is attributable to neighboring property owners (including an auto parts manufacturer), and not the dry cleaner.  The EPA is now proposing to list the area on the National Priorities List (i.e., as a Superfund site), which would make the site eligible for additional Federal funding.  We have filed formal comments with the EPA opposing the proposed listing. Were the site to be listed, the EPA could use the funding to further investigate and clean-up the residential area and could then seek to recoup its costs from responsible parties.  Although the outcome of this process

F-29


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.
We also have been contacted by regulators and the current owner of a property in Lake Tahoe regarding environmental issues allegedly stemming from the historic operation of a dry cleaner on the site.  An entity owned by us was the former general partner of a now-dissolved company that previously owned the dry cleaner site. That entity and the current property owner have been remediating the dry cleaner site since 2009, under the oversight of the Lahontan Regional Water Quality Control Board, or Lahontan. Lahontan, recently tested domestic wells in the area and found two wells with contaminants linked to dry cleaning.  We entered into an agreement with Lahontan and the current owner to pay for an alternative water connection at an insignificant cost and have fulfilled our obligations under that agreement.  During September 2015, Lahontan sent us and the current owner a proposed cleanup and abatement order that, if entered, would require us and the current owner to perform additional groundwater investigation and corrective actions with respect to onsite and offsite contamination. We are currently assessing potential legal and technical grounds for challenging and/or narrowing the scope of the proposed order.  Although the outcome of this process 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.
We have determined that our legal obligations to remove or remediate certain potentially hazardous materials may be conditional asset retirement obligations, as defined in GAAP. Except in limited circumstances where the asset retirement activities are expected to be performed in connection with a planned construction project or apartment community casualty, we believe that the fair value of our asset retirement obligations cannot be reasonably estimated due to significant uncertainties in the timing and manner of settlement of those obligations. Asset retirement obligations that are reasonably estimable as of December 31, 2015, are immaterial to our consolidated financial condition, results of operations and cash flows.
Operating Leases
We are obligated under non-cancelable operating leases for office space and equipment. We are also obligated under non-cancelable operating leases for the ground under certain of our apartment communities with remaining terms ranging from 3340 years to 6971 years. Approximate minimum annual rental payments under operating leases are as follows (in thousands):
Office and Equipment Lease ObligationsGround Lease ObligationsTotal Operating Lease ObligationsOffice and Equipment Lease Obligations Ground Lease Obligations Total Operating Lease Obligations
2016$3,061
$795
$3,856
20172,361
895
3,256
$2,559
 $1,093
 $3,652
20181,062
995
2,057
1,278
 1,193
 2,471
2019226
1,095
1,321
244
 1,293
 1,537
2020153
1,331
1,484
153
 1,529
 1,682
2021
 1,565
 1,565
Thereafter
67,876
67,876

 81,384
 81,384
Total$6,863
$72,987
$79,850
$4,234
 $88,057
 $92,291
Substantially all of the office space subject to the operating leases in the table above is for the use of our corporate offices and area operations. Rent expense recognized totaled $3.3 million, $3.2 million $3.3 millionand $4.2$3.3 million for the years ended December 31, 2016, 2015, 2014 and 2013,2014, respectively. Rent expense recognized for the ground leases totaled $1.7 million, $0.9 million $1.0 million and $0.9$1.0 million for the years ended December 31, 2016, 2015 2014and 2013,2014, respectively and is included within interest expense in the accompanying statements of operations.

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Note 8 — Income Taxes
Deferred income taxes reflect the net effects of temporary differences between the carrying amounts of assets and liabilities of the TRS entities for financial reporting purposes and the amounts used for income tax purposes. Significant components of our deferred tax liabilities and assets are as follows (in thousands):
 December 31,
 2015 2014
Deferred tax liabilities:   
Real estate and real estate partnership basis differences$31,726
 $38,231
    
Deferred tax assets:   
Net operating, capital and other loss carryforwards$8,024
 $6,699
Accruals and expenses4,917
 5,430
Tax credit carryforwards49,036
 29,714
Management contracts and other333
 267
Total deferred tax assets62,310
 42,110
Valuation allowance(4,467) (3,627)
Net deferred income tax assets$26,117
 $252
During the year ended December 31, 2015, we increased the valuation allowance on a net basis by approximately $0.8 million with a minor effect on the effective tax rate.
A reconciliation of the beginning and ending balance of our unrecognized tax benefits is presented below (in thousands):
 2015 2014 2013
Balance at January 1$2,286
 $2,871
 $3,536
Reductions as a result of a lapse of the applicable statutes
 
 (764)
Additions (reductions) based on tax positions related to prior years and current year excess benefits related to stock-based compensation611
 (585) 99
Balance at December 31$2,897
 $2,286
 $2,871
Because the statute of limitations has not yet elapsed, our United States Federal income tax returns for the year ended December 31, 2011, and subsequent years and certain of our State income tax returns for the year ended December 31, 2011, and subsequent years are currently subject to examination by the IRS or other taxing authorities. Approximately $2.3 million of unrecognized benefit, if recognized, would affect the effective rate.
On March 19, 2014, the IRS notified the Aimco Operating Partnership of its intent to audit the 2011 and 2012 tax years.  This audit remains in process as of December 31, 2015. We do not believe the audit will have any material effect on our unrecognized tax benefits, financial condition or results of operations.
Our policy is to include any interest and penalties related to income taxes within the income tax line item in our consolidated statements of operations.
In accordance with the accounting requirements for stock-based compensation, we may recognize tax benefits in connection with the exercise of stock options by employees of our TRS entities and the vesting of restricted stock awards. At December 31, 2015 we had $1.6 million in cumulative excess tax benefits from employee stock option exercises and vested restricted stock awards. None of the excess tax benefits have yet been realized.

F-31


Significant components of the income tax benefit or expense are as follows and are classified within income tax benefit in continuing operations, income from discontinued operations, net of tax, and gain on dispositions or real estate, net of tax, in our statements of operations for the years ended December 31, 2015, 2014 and 2013 (in thousands):
 2015 2014 2013
Current:     
Federal$1,310
 $
 $
State1,357
 970
 63
Total current2,667
 970
 63
      
Deferred:     
Federal(27,382) 11,556
 7,621
State(1,052) 3,485
 1,685
Total deferred(28,434) 15,041
 9,306
Total (benefit) expense$(25,767) $16,011
 $9,369
Classification:     
Continuing operations$(27,524) $(20,047) $(1,959)
Discontinued operations$
 $
 $11,328
Gain on dispositions of real estate$1,757
 $36,058
 $
Consolidated income or loss subject to tax consists of pretax income or loss of our TRS entities and gains or losses on certain apartment community sales that are subject to income tax under section 1374 of the Internal Revenue Code. For the year ended December 31, 2015, our TRS entities had pretax losses of $31.3 million. For the years ended December 31, 2014 and 2013, our TRS entities had pretax income of $137.0 million and $46.6 million, respectively.
The reconciliation of income tax attributable to continuing and discontinued operations computed at the United States statutory rate to income tax (benefit) expense is shown below (dollars in thousands):
 2015 2014 2013
 Amount Percent Amount Percent Amount Percent
Tax at United States statutory rates on consolidated income or loss subject to tax$(10,947) 35.0 % $47,950
 35.0 % $16,326
 35.0 %
State income tax expense, net of Federal tax (benefit) expense(361) 1.2 % 4,364
 3.2 % 1,748
 3.7 %
Effect of permanent differences(27) 0.1 % (154) (0.1)% (296) (0.6)%
Tax effect of intercompany transfers of assets between the REIT and TRS entities (1)(1,515) 4.8 % (23,969) (17.5)% (4,272) (9.2)%
Tax credits(13,583) 43.4 % (12,271) (9.0)% (4,137) (8.9)%
Increase in valuation allowance666
 (2.1)% 91
 0.1 % 
  %
Total income tax (benefit) expense$(25,767) 82.4 % $16,011
 11.7 % $9,369
 20.0 %
(1)Includes the effect of intercompany asset transfers between the Aimco Operating Partnership and TRS entities, for which tax is deferred and recognized as the assets affect GAAP income or loss, for example, through depreciation, impairment, or upon the sale of the asset to a third party.
Income taxes paid totaled approximately $2.0 million, $1.7 million and $0.6 million, respectively, in the years ended December 31, 2015, 2014 and 2013, respectively.
At December 31, 2015, we had state net operating loss carryforwards, or NOLs, for which the deferred tax asset was approximately $8.0 million, before a valuation allowance of $4.5 million. The NOLs expire in years 2018 to 2032. Subject to certain separate return limitations, we may use these NOLs to offset a portion of state taxable income generated by our TRS entities. As of December 31, 2015, we had low-income housing and rehabilitation tax credit carryforwards of approximately $49.5 million for income tax purposes that expire in years 2024 to 2033. The deferred tax asset related to these credits is approximately $49.0 million.

F-32


For income tax purposes, dividends paid to holders of Common Stock primarily consist of ordinary income, capital gains, qualified dividends and unrecaptured Section 1250 gains, or a combination thereof. For the years ended December 31, 2015, 2014 and 2013, dividends per share held for the entire year were estimated to be taxable as follows:
 2015 2014 2013
 Amount Percentage Amount Percentage Amount Percentage
Ordinary income$0.36
 30.2% $0.01
 0.6% $0.17
 17.9%
Capital gains0.37
 31.3% 0.53
 51.6% 0.13
 13.9%
Qualified dividends0.17
 14.5% 
 % 
 %
Unrecaptured Section 1250 gain0.28
 24.0% 0.50
 47.8% 0.66
 68.2%
 $1.18
 100.0% $1.04
 100.0% $0.96
 100.0%
We designated the per share amounts above as capital gain dividends in accordance with the requirements under the Code. Additionally, we designated as 2015 capital gain dividends, a like portion of preferred dividends.
Note 96 — Aimco Equity
Preferred Stock
At December 31, 20152016 and 2014,2015, Aimco had the following classes of perpetual preferred stock outstanding (dollars in thousands):
Redemption 
Annual Dividend Rate Per Share
(paid quarterly)
 Balance December 31,Redemption 
Annual Dividend Rate Per Share
(paid quarterly)
 Balance at December 31,
Date (1) 2015 2014Date (1) 2016 2015
Class A Cumulative Preferred Stock, 5,000,000 shares authorized and 5,000,000 shares issued/outstanding5/17/2019 6.88% $125,000
 $125,000
5/17/2019 6.88% $125,000
 $125,000
Class Z Cumulative Preferred Stock, 4,800,000 shares authorized and 1,391,643 shares issued/outstanding, respectively7/29/2016 7.00% 34,126
 34,126
Series A Community Reinvestment Act (CRA) Preferred Stock, 240 shares authorized and zero and 54 shares issued/outstanding, respectively6/30/2011 (2) 
 27,000
Class Z Cumulative Preferred Stock, 4,800,000 shares authorized and zero and 1,391,643 shares issued/outstanding, respectively7/29/2016 7.00% 
 34,126
Preferred stock per consolidated balance sheets $159,126
 $186,126
 $125,000
 $159,126
    
(1)All classes of preferred stock are or were redeemable at our option on and after the dates specified.
(2)The dividend rate was a variable rate per annum equal to the Three-Month LIBOR Rate (as defined in the articles supplementary designating the Series A Community Reinvestment Act Perpetual Preferred Stock, or CRA Preferred Stock) plus 1.25%, calculated as of the beginning of each quarterly dividend period. The rate at December 31, 2014 was 1.48%.
All classes of preferred stock haveAmico’s Class A Preferred Stock has a $0.01$0.01 per share par value, are pari passu with each other and areis senior to ourAimco’s Common Stock.Stock and has a liquidation preference per share of $25.00. The holders of each class of preferred stockPreferred Stock are generally not entitled to vote on matters submitted to stockholders. Dividends on all shares of preferred stockClass A Preferred Stock are subject to declaration by Aimco’s Board of Directors. Aimco’s Class A Preferred Stock and Class Z Preferred Stock have liquidation preferences per share of $25.00.
The following table summarizes our issuances of Class A Preferred Stock and Class Z Preferred Stockpreferred stock during the year ended December 31, 2014 (dollars in thousands, except per share amounts):
 Class A Cumulative Preferred Stock Class Z Cumulative Preferred Stock
Number of shares of preferred stock issued5,000,000
 117,400
Price to public per share$25.00
 $25.65
Underwriting discounts, commissions and transaction costs per share$0.85
 $0.51
Net proceeds per share$24.15
 $25.14
Net proceeds to Aimco$120,757
 $2,901
Issuance costs (primarily underwriting commissions) recognized as an adjustment of additional paid-in capital$4,350
 $110
In connection with Aimco’sthese issuances of Aimco preferred stock, issuances, Aimco contributed the net proceeds to the Aimco Operating Partnership in exchange for an equal number of the corresponding class of partnership preferred units. 

F-33

TableDuring the year ended December 31, 2016, Aimco redeemed all of Contentsthe outstanding shares of its Class Z Cumulative Preferred Stock at a redemption value of $34.8 million. We reflected the $0.7 million excess of the redemption value over the carrying amount and $1.3 million of issuance costs previously recorded as a reduction of additional paid-in capital as an adjustment of net income attributable to preferred stockholders for the year ended December 31, 2016.

During the year ended December 31, 2015, Aimco redeemed the remaining outstanding shares, or $27.0 million in liquidation preference, of its Series A Community Reinvestment Act, or CRA, Preferred Stock. We reflected $0.7 million of issuance costs previously recorded as a reduction of additional paid-in capital as an adjustment of net income attributable to preferred stockholders for the year ended December 31, 2015. During the year ended December 31, 2014, Aimco repurchased 20 shares, or $10.0 million in liquidation preference, of its CRA Preferred Stock for cash totaling $9.5 million. We reflected the $0.5 million excess of the carrying value over the repurchase price, offset by $0.3 million of issuance costs previously recorded as a reduction of additional paid-in capital, as an adjustment of net income attributable to preferred stockholders for the year ended December 31, 2014.
In connection with the redemptionthese redemptions and repurchase of Aimco preferred stock, the Aimco Operating Partnership redeemed or repurchased from Aimco a number of Partnership Preferred Units equal to the number of shares redeemed or repurchased by Aimco.
Common Stock
During the years ended December 31, 2016, 2015 and 2014, Aimco declared dividends per common share of $1.32, $1.18 and $1.04, respectively.
During the year ended December 31, 2015, Aimco issued 9,430,000 shares of its Common Stock, par value $0.01 per share, in an underwritten public offering, for net proceeds per share of $38.90. The offering generated net proceeds to Aimco of $366.6 million, net of issuance costs. Aimco contributed the net proceeds from the sale of Common Stock to the Aimco Operating Partnership in exchange for a number of common partnership units equal to the number of shares of Common Stock issued.
Using the proceeds from this offering, during the year ended December 31, 2015, we repaid the then outstanding balance on our Credit Agreement, expanded our unencumbered asset pool, funded redevelopment and property upgrades investments that would otherwise have been funded with property debt and redeemed the remaining outstanding shares of our Series A CRA Preferred Stock.
Registration Statements
Pursuant to an At-The-Market offering program active at December 31, 2015,2016, Aimco had the capacity to issue up to 3.5 million additional shares of its Common Stock. In the event of any such issuances by Aimco, the Aimco Operating Partnership would issue to Aimco a corresponding number of common partnership units in exchange for the proceeds.
Additionally, Aimco and the Aimco Operating Partnership have a shelf registration statement that provides for the issuance of debt and equity securities by Aimco and debt securities by the Aimco Operating Partnership.
Note 107 — Partners’ Capital
Partnership Preferred Units Owned by Aimco
At December 31, 20152016 and 2014,2015, the Aimco Operating Partnership had outstanding preferred units in classes and amounts similar to Aimco’s Preferred Stock discussed in Note 96, or Partnership Preferred Units. All of these classes of Partnership Preferred Units were owned by Aimco during the periods presented.
All classes of Partnership Preferred Units are pari passu with each other and are senior to the Aimco Operating Partnership’s common partnership units. None of the classes of Partnership Preferred Units have any voting rights, except the right to approve certain changes to the Aimco Operating Partnership’s Partnership Agreement that would adversely affect holders of such class of units. Distributions on all Partnership Preferred Units are subject to being declared by the General Partner. All classes of the Partnership Preferred Units are redeemable by the Aimco Operating Partnership only in connection with a concurrent redemption by Aimco of the corresponding classes of Aimco Preferred Stock held by unrelated parties.
As discussed in Note 96, during the years ended December 31, 2016, 2015 and 2014, Aimco completed various Preferred Stock issuances, redemptions and repurchases. In connection with these transactions, the Aimco Operating Partnership issued to Aimco or redeemed or repurchased from Aimco a corresponding number of Partnership Preferred Units.

F-34


Redeemable Partnership Preferred Units
In addition to the Partnership Preferred Units owned by Aimco, the Aimco Operating Partnership has outstanding various classes of redeemable Partnership Preferred Units owned by third parties, which we refer to as preferred OP Units. As of December 31, 20152016 and 2014,2015, the Aimco Operating Partnership had the following classes of preferred OP Units (stated at their redemption values, in thousands, except unit and per unit data):
 Distributions per Annum Units Issued and Outstanding Redemption ValuesDistributions per Annum Units Issued and Outstanding Redemption Values
Class of Preferred Units Percent Per Unit 2015 2014 2015 2014Percent Per Unit 2016 2015 2016 2015
Class One 8.75% $8.00
 90,000
 90,000
 $8,229
 $8,229
8.75% $8.00
 90,000
 90,000
 $8,229
 $8,229
Class Two 1.92% $0.46
 18,124
 18,589
 453
 465
1.92% $0.48
 17,750
 18,124
 444
 453
Class Three 7.88% $1.97
 1,341,289
 1,341,485
 33,532
 33,537
7.88% $1.97
 1,341,289
 1,341,289
 33,532
 33,532
Class Four 8.00% $2.00
 644,954
 644,954
 16,124
 16,124
8.00% $2.00
 644,954
 644,954
 16,124
 16,124
Class Six 8.50% $2.13
 790,883
 790,883
 19,772
 19,772
8.50% $2.13
 780,036
 790,883
 19,501
 19,772
Class Seven 7.87% $1.97
 27,960
 27,960
 699
 699
7.87% $1.97
 27,960
 27,960
 699
 699
Class Nine 6.00% $1.50
 364,668
 364,668
 9,117
 9,117
6.00% $1.50
 306,890
 364,668
 7,672
 9,117
Class Ten6.00% $1.50
 680,000
 
 17,000
 
Total     3,277,878
 3,278,539
 $87,926
 $87,943
    3,888,879
 3,277,878
 $103,201
 $87,926
Each class ofThe Class One through Class Nine preferred OP Unit isUnits are currently redeemable at the holders’ option. The Class Ten preferred OP Units are redeemable after August 16, 2017, at the holder’s option. The Aimco Operating Partnership, at its sole discretion, may settle such redemption requests in cash or cause Aimco to issue shares of its Common Stock with a value equal to the redemption price. In the event the Aimco Operating Partnership requires Aimco to issue shares of Common Stock to settle a redemption request, the Aimco Operating Partnership would issue to Aimco a corresponding number of common partnership units. The Aimco Operating Partnership has a redemption policy that requires cash settlement of redemption requests for the redeemable preferred OP Units, subject to limited exceptions. Subject to certain conditions, the Class Four and Class Six preferred OP Units are convertible into common OP Units.
These redeemable units are classified within temporary equity in Aimco’s consolidated balance sheets and within temporary capital in the Aimco Operating Partnership’s consolidated balance sheets.
During the years ended December 31, 2016, 2015, 2014 and 2013,2014, approximately 69,000, 700 12,600and 3,60012,600 preferred OP Units, respectively, were tendered for redemption in exchange for cash, and no preferred OP Units were tendered for redemption in exchange for shares of Aimco Common Stock.
The Class Ten and Class Nine preferred OP Units were issued as partial consideration for an asset acquisitionacquisitions during the yearyears ended December 31, 2014.2016 and 2014, respectively.
The following table presents a reconciliation of the Aimco Operating Partnership’s preferred OP Units during the years ended December 31, 2016, 2015, 2014 and 20132014 (dollars in thousands).
2015 2014 20132016 2015 2014
Balance at January 1$87,937
 $79,953
 $80,046
$87,926
 $87,937
 $79,953
Preferred distributions(6,943) (6,409) (6,423)(7,239) (6,943) (6,409)
Redemption of preferred units and other(11) (1,221) (93)(1,725) (11) (1,221)
Issuance of preferred units
 9,117
 
17,000
 
 9,117
Net income6,943
 6,497
 6,423
7,239
 6,943
 6,497
Balance at December 31$87,926
 $87,937
 $79,953
$103,201
 $87,926
 $87,937
Common Partnership Units
In the Aimco Operating Partnership’s consolidated balance sheets, the common partnership units held by Aimco are classified within Partners’ Capital as General Partner and Special Limited Partner capital and the common OP Units are classified within Limited Partners’ capital. In Aimco’s consolidated balance sheets, the common OP Units are classified within permanent equity as common noncontrolling interests in the Aimco Operating Partnership.

Common partnership units held by Aimco are not redeemable. Commonredeemable whereas common OP Units are redeemable at the holders’ option, subject to certain restrictions, on the basis of one common OP Unit for either one share of Common Stock or cash equal to the fair value

F-35


of a share of Common Stock at the time of redemption. Aimco has the option to deliver shares of Common Stock in exchange for all or any portion of the common OP Units tendered for redemption. When a limited partner redeems a common OP Unit for Common Stock, Limited Partners’ capital is reduced and the General Partner and Special Limited Partners’ capital is increased.
The holders of the common OP Units receive distributions, prorated from the date of issuance, in an amount equivalent to the dividends paid to holders of Common Stock.
During the years ended December 31, 2016, 2015, 2014 and 2013,2014, the Aimco Operating Partnership declared distributions per common unit of $1.32, $1.18 and $1.04, respectively.
During the years ended December 31, 2016, 2015 and 2014, approximately 248,000, 112,000 268,000and 105,000268,000 common OP Units, respectively, were redeemed in exchange for cash, and no common OP Units were redeemed in exchange for shares of Common Stock.
HPUs
At December 31, 20152016 and 2014,2015, the Aimco Operating Partnership also had outstanding 2,339,950 high performance units, or HPUs. TheEffective January 1, 2017, the holders of HPUs may redeem these units commencing after December 31, 2016, on the basis of one HPU for either one share of Common Stock or cash equal to the fair value of a share of Common Stock at the time of redemption, at Aimco’s option. The holders of HPUs receive the same amount of distributions that are paid to holders of an equivalent number of common OP Units. The HPUs are classified within permanent capital as part of Limited Partners’ capital in the Aimco Operating Partnership’s consolidated balance sheets, and within permanent equity as part of common noncontrolling interests in the Aimco Operating Partnership within Aimco’s consolidated balance sheets.
Note 118 — Share-Based Compensation
We have a stock award and incentive planprogram to attract and retain officers, key employees and independent directors. In 2015, our stockholders approved the 2015 Stock Award and Incentive Plan, or the 2015 Plan, to supplement and eventually replace our 2007 Stock Award and Incentive Plan, or the 2007 Plan.  
As of December 31, 2015,2016, approximately 150,000 shares were available for issuance under the 2007 Plan, and approximately 1.61.0 million shares were available for issuance under theour 2015 Stock Award and Incentive Plan. The total number of shares available for issuance under the 2015 Planthis plan may be increased by an additional 2.30.6 million shares to the extent of any forfeiture, cancellation, exchange, surrender, termination or expiration of an award outstanding under theour 2007 Stock Award and Incentive Plan. Awards under the 2015 Planplan may be in the form of incentive stock options, non-qualified stock options and restricted stock, or other types of awards as authorized under the plan.
Our plans are administered by the Compensation and Human Resources Committee of Aimco’s Board of Directors. In the case of stock options, the exercise price of the options granted may not be less than the fair market value of a share of Common Stock at the date of grant. The term of the options is generally ten years from the date of grant and the options typically vest over a period of four years from the date of grant.
Total compensation cost recognized for stock based awards was $8.6 million, $7.2 million $6.1 million and $5.9$6.1 million for the years ended December 31, 2016, 2015 2014and 2013,2014, respectively. Of these amounts, $0.5$1.0 million, $0.3$0.5 million and $0.3 million, respectively, were capitalized. At December 31, 2015,2016, total unvested compensation cost not yet recognized was $11.3$13.0 million. We expect to recognize this compensation over a weighted average period of approximately 1.81.7 years.
We grant four different types of awards that are outstanding as of December 31, 2016. We grant stock options and restricted stock awards that are subject to time-based vesting and require continuous employment, typically over a period of four years from the grant date, and we refer to these awards as Time-Based Stock Options and Time-Based Restricted Stock, respectively. We also grant stock options and restricted stock awards that vest conditioned on Aimco’s total shareholder return, or TSR, relative to the NAREIT Apartment Index (60% weighting) and the MSCI US REIT Index (40% weighting) over a forward-looking performance period of three years, and we refer to these awards as TSR Stock Options and TSR Restricted Stock, respectively. Earned TSR Stock Options and TSR Restricted Stock, if any, will vest 50% on each of the third anniversary of the grant date and 50% on the fourth anniversary of the grant date, based on continued employment. The term of Time-Based Stock Options and TSR Stock Options is generally ten years from the date of grant.
We recognize compensation expense associated with Time-Based Stock Options and Time-Based Restricted Stock ratably over the requisite service periods, which are typically four years. We recognize compensation expense related to the TSR Stock Options and TSR Restricted Stock, which have graded vesting periods, over the requisite service period for each separate vesting tranche of the option, commencing on the grant date. The value of the TSR Stock Options and TSR Restricted Stock Awards take into consideration the probability that the options will ultimately vest; therefore previously recorded compensation expense is not adjusted in the event that the market condition is not achieved.

Stock Options
During the year ended December 31, 2016, we granted TSR Stock Options, and during and prior to the year ended December 31, 2015, we granted Time-Based Stock Options.
The following table summarizes activity for our outstanding stock options, with service conditions (i.e. time-based vesting that requires continuous employment) for the years ended December 31, 2016, 2015, 2014 and 20132014 (numbers of options in thousands):
2015 2014 20132016 2015 2014
Number of Options Weighted
Average
Exercise
Price
 Number of Options Weighted
Average
Exercise
Price
 Number of Options Weighted
Average
Exercise
Price
Number of Options Weighted
Average
Exercise
Price
 Number of Options Weighted
Average
Exercise
Price
 Number of Options Weighted
Average
Exercise
Price
Outstanding at beginning of year1,640
 $28.91
 2,991
 $28.48
 3,045
 $28.39
1,394
 $30.85
 1,640
 $28.91
 2,991
 $28.48
Granted239
 39.05
 
 
 
 
216
 38.73
 239
 39.05
 
 
Exercised(484) 28.33
 (1,347) 27.97
 (44) 22.52
(934) 33.61
 (484) 28.33
 (1,347) 27.97
Forfeited(1) 25.78
 (4) 25.45
 (10) 27.82
(1) 29.11
 (1) 25.78
 (4) 25.45
Outstanding at end of year1,394
 $30.85
 1,640
 $28.91
 2,991
 $28.48
675
 $29.55
 1,394
 $30.85
 1,640
 $28.91
Exercisable at end of year1,155
 $29.16
 1,640
 $28.91
 2,991
 $28.48
280
 $16.38
 1,155
 $29.16
 1,640
 $28.91

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The intrinsic value of a stock option represents the amount by which the current price of the underlying stock exceeds the exercise price of the option. Options outstanding at As of December 31, 2015,2016, options outstanding had an aggregate intrinsic value of $13.6$10.7 million and a weighted average remaining contractual term of 3.26.5 years. Options exercisable at December 31, 2015,2016, had an aggregate intrinsic value of $13.4$8.1 million and a weighted average remaining contractual term of 2.03.3 years. The intrinsic value of stock options exercised during the years ended December 31, 2016, 2015, 2014 and 2013,2014, was $11.1 million, $5.5 million $10.0and $10.0 million, and $0.3 million, respectively.
We estimated theThe weighted average grant date fair value of stock options granted during the yearyears ended December 31, 2016 and 2015, using a Black-Scholes closed-form valuation model using the assumptions set forth in the table below. The expected term of the options was based on historical$9.94 and $6.97 per option, exercises and post-vesting terminations. Expected volatility reflects an average of the historical volatility of our Common Stock during the historical period commensurate with the expected term of the options that ended on the date of grant, and the implied volatility is calculated from observed call option contracts closest to the expected term. The expected dividend yield reflects expectations regarding cash dividend amounts per share paid on Aimco’s Common Stock during the expected term of the option and the risk-free interest rate reflects the annualized yield of a zero coupon U.S. Treasury security with a term equal to the expected term of the option. The weighted average fair value of options and our valuation assumptions for the 2015 grants were as follows:
 2015
Weighted average grant-date fair value$6.97
Assumptions: 
Risk-free interest rate1.68%
Expected dividend yield2.87%
Expected volatility25.19%
Weighted average expected life of options5.5 years
We recognize compensation expense associated with stock options ratably over the requisite service periods, which are typically four years.respectively.
Time-Based Restricted Stock Awards
The following table summarizes activity for restricted stock awards with service conditions, or Time-Based Restricted Stock awards, for the years ended December 31, 2016, 2015 2014 and 20132014 (numbers of shares in thousands):
2015 2014 20132016 2015 2014
Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
Unvested at beginning of year513
 $26.34
 575
 $25.28
 526
 $22.69
339
 $29.96
 513
 $26.34
 575
 $25.28
Granted145
 39.39
 196
 26.69
 253
 27.86
91
 40.03
 145
 39.39
 196
 26.69
Vested(259) 27.54
 (238) 24.07
 (204) 21.81
(181) 29.99
 (259) 27.54
 (238) 24.07
Forfeited(60) 32.29
 (20) 26.26
 
 

 
 (60) 32.29
 (20) 26.26
Unvested at end of year339
 $29.96
 513
 $26.34
 575
 $25.28
249
 $33.61
 339
 $29.96
 513
 $26.34
The aggregate fair value of shares that vested during the years ended December 31, 2016, 2015, 2014 and 20132014 was $7.0 million, $10.4 million $6.7and $6.7 million, and $5.7 million, respectively.
We recognize compensation expense associated with Time-Based Restricted Stock awards ratably over the requisite service periods, which are typically four years.
TSR Restricted Stock Awards
During 2015, Aimco’s stockholders approved the 2015 Plan, which provides for grants of performance based compensation. A portion of long-term incentive, or LTI, compensation granted in 2015 was in the form of restricted stock awards conditioned on Aimco’s relative total shareholder return, or TSR, as compared to the NAREIT Apartment Index (60% weighting) and the MSCI US REIT Index (40% weighting) over a forward looking, performance period of three years.
Earned awards (if any) will vest 50% on the third anniversary of the grant date and 50% on the fourth anniversary of the grant date, based on continued employment. Prior to the vesting, dividends payable on the awards are deferred and subject to the same forfeiture provisions as the awards.

F-37


The following table summarizes activity for TSR Restricted Stock awards for the yearyears ended December 31, 2016 and 2015 (numbers of shares in thousands):
20152016 2015
Number of Shares Weighted
Average
Grant-Date
Fair Value
Number of Shares Weighted
Average
Grant-Date
Fair Value
 Number of Shares Weighted
Average
Grant-Date
Fair Value
Unvested at beginning of year
 $
123
 $39.72
 
 $
Granted142
 39.72
91
 39.59
 142
 39.72
Forfeited(19) 39.72

 
 (19) 39.72
Unvested at end of year123
 $39.72
214
 $39.66
 123
 $39.72
Determination of Grant-Date Fair Value of Awards
We estimated the fair value of TSR Stock Options granted in 2016 and TSR Restricted Stock granted in 2016 and 2015 using a Monte Carlo model using the assumptions set forth in the table below.
The risk-free interest rate reflects the annualized yield of a zero coupon U.S. Treasury security with a term equal to the expected term of the option. The expected dividend yield reflects expectations regarding cash dividend amounts per share paid on Aimco’s Common Stock during the expected term of the option. Expected volatility reflects an average of the historical volatility of Aimco’s Common Stock during the historical period commensurate with the expected term of the options that ended on the date of grant, and the implied volatility is calculated from observed call option contracts closest to the expected term. The derived vesting period of TSR Restricted Stock was determined based on the graded vesting terms. The expected term of the options was based on historical option exercises and post-vesting terminations. The midpoints of our valuation assumptions for the 2016 and 2015 grants were as follows:
 2016 2015
Grant date market value of a common share38.73
 39.05
Risk-free interest rate1.15% 1.04%
Dividend yield3.41% 2.87%
Expected volatility21.24% 19.48%
Derived vesting period of TSR Restricted Stock3.4 years
 3.4 years
Weighted average expected term of TSR Stock Options5.8 years
 n/a
We estimated the fair value of Time-Based Options granted during the year ended December 31, 2015, using a Black-Scholes closed-form valuation model using the assumptions set forth in the table below.
2015
Risk-free interest rate1.68%
Expected dividend yield2.87%
Expected volatility25.19%
Weighted average expected term of options5.5 years
The grant date fair value for the TSRTime-Based Restricted Stock awards which was calculated usingreflects the closing price of a Monte Carlo model, and certain of the assumptions used in such calculation for awards granted in 2015 are set forth below:
  2015
Grant date fair value $39.72
Baseline common share value $39.05
Dividend yield 2.87%
Expected volatility of common shares 19.48%
Risk-free interest rate 1.04%
Derived vesting period 3.4 years
We recognize compensation expense related to the TSR Restricted Stock awards, which have graded vesting periods, over the requisite service period for each separate vesting tranche of the award, commencingcommon share on the grant date. These awards have market conditions in addition to service conditions that must be met for

Note 9 — Income Taxes
Deferred income taxes reflect the awards to vest. The valuenet effects of temporary differences between the carrying amounts of assets and liabilities of the awards takes into considerationTRS entities for financial reporting purposes and the probability thatamounts used for income tax purposes. Significant components of our deferred tax liabilities and assets are as follows (in thousands):
 December 31,
 2016 2015
Deferred tax liabilities:   
Real estate and real estate partnership basis differences$72,726
 $31,726
Deferred tax assets:   
Net operating, capital and other loss carryforwards$8,873
 $8,024
Accruals and expenses7,537
 4,917
Tax credit carryforwards65,559
 49,036
Management contracts and other300
 333
Total deferred tax assets82,269
 62,310
Valuation allowance(4,467) (4,467)
Net deferred tax assets$5,076
 $26,117
A reconciliation of the awards will ultimately vest; therefore previously recorded compensation expensebeginning and ending balance of our unrecognized tax benefits is presented below (in thousands):
 2016 2015 2014
Balance at January 1$2,897
 $2,286
 $2,871
Additions (reductions) based on tax positions related to prior years and current year excess benefits related to stock-based compensation(611) 611
 (585)
Balance at December 31$2,286
 $2,897
 $2,286
Because the statute of limitations has not adjusted in the event that the market condition is not achieved.
Note 12 — Assets Heldyet elapsed, our United States federal income tax returns for Sale and Discontinued Operations
As discussed in Note 2, during the year ended December 31, 2014, we adopted ASU 2014-08, which revised the definition of,2012, and the requirements for reporting, a “discontinued operation.” Under ASU 2014-08, we believe routine sales of apartment communitiessubsequent years and certain groups of apartment communities generally will not meetour State income tax returns for the requirements for reporting within discontinued operations. Summarized information regarding apartment communities sold during the yearsyear ended December 31, 20152012, and subsequent years are currently subject to examination by the IRS or other taxing authorities. Approximately $2.3 million of the unrecognized benefit, if recognized, would affect the effective rate.
On March 19, 2014, is set forththe IRS notified the Aimco Operating Partnership of its intent to audit the 2011 and 2012 tax years. This audit remains in process as of December 31, 2016. We do not believe the table below (dollars in thousands):
 Year Ended December 31,
 2015 2014
Apartment communities sold11
 30
Apartment homes sold3,855
 9,067
Income before income taxes and discontinued operations$14,191
 $55,122
Theaudit will have any material effect on our unrecognized tax benefits, financial condition or results of operations foroperations.
Our policy is to include any interest and penalties related to income taxes within the years ended December 31, 2015 and 2014, of the apartment communities sold during these periods are reflected within income from continuing operationstax line item in our consolidated statements of operationsoperations.
In accordance with the accounting requirements for stock-based compensation, we may recognize tax benefits in connection with the exercise of stock options by employees of our TRS entities and the vesting of restricted stock awards. As of December 31, 2016, all cumulative excess tax benefits from employee stock option exercises and vested restricted stock awards had been realized. Beginning in 2017, we will recognize the tax effects related gainsto stock-based compensation through earnings in the period the compensation is recorded. Refer to Recent Accounting Pronouncements section of Note 2 for additional information regarding this change.

Significant components of the income tax benefit or expense are as follows and are classified within income tax benefit in income before gain on sale are reflected asdispositions and gain on dispositions of real estate, net of tax, withinin our consolidated statements of operations. We report gains on disposition net of incremental direct costs incurred in connection withoperations for the transactions, including any prepayment penalties incurred upon repayment of property debt collateralized by the apartment communities being sold. Such prepayment penalties totaled $25.8 million for consolidated dispositions during the yearyears ended December 31, 2016, 2015 ($16.6 millionand 2014 (in thousands):
 2016 2015 2014
Current:     
Federal$5,038
 $1,310
 $
State2,916
 1,357
 970
Total current7,954
 2,667
 970
      
Deferred:     
Federal(26,173) (27,382) 11,556
State(623) (1,052) 3,485
Total deferred(26,796) (28,434) 15,041
Total (benefit) expense$(18,842) $(25,767) $16,011
Classification:     
        Income before gain on dispositions$(25,208) $(27,524) $(20,047)
Gain on dispositions of real estate$6,366
 $1,757
 $36,058
Consolidated income or loss subject to tax consists of which representedpretax income or loss of our TRS entities and income and gains retained by the mark-to-market adjustment), and $25.2 million for consolidated dispositions duringREIT. For the yearyears ended December 31, 2016, 2015 and 2014, ($16.6we had consolidated net income subject to tax of $109.3 million, net loss subject to tax of $31.3 million and net income subject to tax of $137.0 million, respectively.
The reconciliation of income tax attributable to continuing and discontinued operations computed at the United States statutory rate to income tax (benefit) expense is shown below (dollars in thousands):
 2016 2015 2014
 Amount Percent Amount Percent Amount Percent
Tax at United States statutory rates on consolidated income or loss subject to tax$38,257
 35.0 % $(10,947) 35.0 % $47,950
 35.0 %
State income tax expense, net of federal tax (benefit) expense7,152
 6.5 % (361) 1.2 % 4,364
 3.2 %
Effect of permanent differences(132) (0.1)% (27) 0.1 % (154) (0.1)%
Tax effect of intercompany transactions (1)(47,369) (43.3)% (1,515) 4.8 % (23,969) (17.5)%
Tax credits(16,750) (15.3)% (13,583) 43.4 % (12,271) (9.0)%
Increase in valuation allowance
  % 666
 (2.1)% 91
 0.1 %
Total income tax (benefit) expense$(18,842) (17.2)% $(25,767) 82.4 % $16,011
 11.7 %
(1)
Includes the effect of intercompany asset transfers between the Aimco Operating Partnership and TRS entities, for which tax is deferred and recognized as the assets affect GAAP income or loss, for example, through depreciation, impairment, or upon the sale of the asset to a third-party. As discussed in Note 2, we expect to adopt the new accounting standard applicable to intercompany asset transfers effective January 1, 2017. As a result, the accumulated unrecognized deferred tax expense associated with historical intercompany transfers will be recognized as a cumulative effect adjustment through retained earnings at that time.
Income taxes paid totaled approximately $2.2 million, $2.0 million and $1.7 million, respectively, in the years ended December 31, 2016, 2015 and 2014, respectively.
At December 31, 2016, we had state net operating loss carryforwards, or NOLs, for which represented the mark-to-mark adjustments).
We are currently marketing for saledeferred tax asset was approximately $8.0 million, before a valuation allowance of $4.5 million. The NOLs expire in years 2017 to 2033. Subject to certain apartment communities that are inconsistent withseparate return limitations, we may use these NOLs to offset a portion of state taxable income generated by our long-term investment strategy. At the end of each reporting period, we evaluate whether such apartment communities meet the criteria to be classified as held for sale.TRS entities. As of December 31, 2015,2016, we had one apartment community with 96 apartment homes classified as heldlow-income housing and rehabilitation tax credit carryforwards and corresponding deferred tax asset of approximately $65.6 million for sale.income tax purposes that expire in years 2024 to 2036.

F-38


In accordance with GAAP prior to our adoptionCommon Stock primarily consist of ASU 2014-08, we reported as discontinued operations apartment communities that met the definition ofordinary income, capital gains, qualified dividends and unrecaptured Section 1250 gains, or a component of an entity and had been sold or met the criteria to be classified as held for sale.combination thereof. For the yearyears ended December 31, 2013, we included the results of such apartment communities, including any gain or loss on their disposition, less applicable income taxes, in income from discontinued operations within the consolidated statements of operations. During the year ended December 31, 2013, we sold 29 consolidated apartment communities with an aggregate of 6,953 apartment homes.
The summary results of operations2016, 2015 and 2014, dividends per share held for the entire year ended December 31, 2013, for those apartment communities soldwere estimated to be taxable as of December 31, 2013, and gains related to apartment communities sold during the year ended December 31, 2013, are included in discontinued operations and are summarized below, along with the related amounts of income from discontinued operations attributable to Aimco, the Aimco Operating Partnership and noncontrolling interests (in thousands).follows:
 2013
Income before gain on dispositions of real estate and income tax$2,098
Gain on dispositions of real estate212,459
Income tax expense(11,328)
Income from discontinued operations, net of tax$203,229
Income from discontinued operations attributable to noncontrolling interests in consolidated real estate partnerships(31,842)
Income from discontinued operations attributable to the Aimco Operating Partnership$171,387
Income from discontinued operations attributable to noncontrolling interests in Aimco Operating Partnership(9,248)
Income from discontinued operations attributable to Aimco$162,139
 2016 2015 2014
 Amount Percentage Amount Percentage Amount Percentage
Ordinary income$0.45
 34.2% $0.36
 30.2% $0.01
 0.6%
Capital gains0.47
 35.4% 0.37
 31.3% 0.53
 51.6%
Qualified dividends0.13
 9.9% 0.17
 14.5% 
 %
Unrecaptured Section 1250 gain0.27
 20.5% 0.28
 24.0% 0.50
 47.8%
 $1.32
 100.0% $1.18
 100.0% $1.04
 100.0%
Gain on dispositions is net of incremental direct costs incurred in connection with the transactions, including $16.5 million of prepayment penalties incurred upon repayment of property debt collateralized by the apartment communities sold in the year ended December 31, 2013 ($6.1 million of which represented the mark-to-market adjustments). For periods prior to our adoption of ASU 2014-08, we classified interest expense related to property debt within discontinued operations when the related apartment community was sold or classified as held for sale.

F-39


Note 1310 — Earnings (Loss) per Share/Unit
Aimco
The following table illustrates Aimco’s calculation calculates basic earnings per common share based on the weighted average number of basicshares of Common Stock and participating securities and calculates diluted earnings (loss) per share fortaking into consideration dilutive common stock equivalents and dilutive convertible securities outstanding during the years ended December 31, 2015, 2014 and 2013 (in thousands, except per share data):period.
 2015 2014 2013
Numerator:     
Income from continuing operations$91,390
 $67,475
 $34,596
Gain on dispositions of real estate, net of tax180,593
 288,636
 
(Income) loss from continuing operations and gain on dispositions attributable to noncontrolling interests(23,273) (46,862) 10,555
Income attributable to preferred stockholders(11,794) (7,947) (2,804)
Income attributable to participating securities(950) (1,082) (813)
Income from continuing operations attributable to Aimco common stockholders$235,966
 $300,220
 $41,534
      
Income from discontinued operations, net of tax$
 $
 $203,229
Income from discontinued operations attributable to noncontrolling interests
 
 (41,090)
Income from discontinued operations attributable to Aimco common stockholders$
 $
 $162,139
      
Net income$271,983
 $356,111
 $237,825
Net income attributable to noncontrolling interests(23,273) (46,862) (30,535)
Net income attributable to preferred stockholders(11,794) (7,947) (2,804)
Net income attributable to participating securities(950) (1,082) (813)
Net income attributable to Aimco common stockholders$235,966
 $300,220
 $203,673
      
Denominator:     
Weighted average common shares outstanding – basic155,177
 145,639
 145,291
Dilutive potential common shares393
 363
 241
Weighted average common shares outstanding – diluted155,570
 146,002
 145,532
      
Earnings per common share – basic and diluted:     
Income from continuing operations attributable to Aimco common stockholders$1.52
 $2.06
 $0.29
Income from discontinued operations attributable to Aimco common stockholders
 
 1.11
Net income attributable to Aimco common stockholders$1.52
 $2.06
 $1.40
      
Dividends declared per common share$1.18
 $1.04
 $0.96

F-40


The Aimco Operating Partnership
The following table illustrates the Aimco Operating Partnership’s calculation of basic and diluted calculates earnings per common unit forbased on the years ended December 31, 2015, 2014weighted average number of common partnership units, participating securities and 2013 (in thousands, exceptcalculates diluted earnings per unit data):
 2015 2014 2013
Numerator:     
Income from continuing operations$91,390
 $67,475
 $34,596
Gain on dispositions of real estate, net of tax180,593
 288,636
 
(Income) loss from continuing operations and gain on dispositions attributable to noncontrolling interests(4,776) (24,595) 19,369
Income attributable to the Aimco Operating Partnership’s preferred unitholders(18,737) (14,444) (9,227)
Income attributable to participating securities(950) (1,082) (813)
Income from continuing operations attributable to the Aimco Operating Partnership’s common unitholders$247,520
 $315,990
 $43,925
      
Income from discontinued operations, net of tax$
 $
 $203,229
Income from discontinued operations attributable to noncontrolling interests
 
 (31,842)
Income from discontinued operations attributable to the Aimco Operating Partnership’s common unitholders$
 $
 $171,387
      
Net income$271,983
 $356,111
 $237,825
Net income attributable to noncontrolling interests(4,776) (24,595) (12,473)
Net income attributable to the Aimco Operating Partnership’s preferred unitholders(18,737) (14,444) (9,227)
Net income attributable to participating securities(950) (1,082) (813)
Net income attributable to the Aimco Operating Partnership’s common unitholders$247,520
 $315,990
 $215,312
      
Denominator:     
Weighted average common units outstanding – basic162,834
 153,363
 153,256
Dilutive potential common units393
 363
 241
Weighted average common units outstanding – diluted163,227
 153,726
 153,497
      
Earnings per common unit – basic and diluted:     
Income from continuing operations attributable to the Partnership’s common unitholders$1.52
 $2.06
 $0.29
Income from discontinued operations attributable to the Partnership’s common unitholders
 
 1.11
Net income attributable to the Partnership’s common unitholders$1.52
 $2.06
 $1.40
      
Distributions declared per common unit$1.18
 $1.04
 $0.96
Aimco and the Aimco Operating Partnership
As of December 31, 2015, thetaking into consideration dilutive common share or unit equivalents that could potentially dilute basic earnings per share orand dilutive convertible securities outstanding during the period.
Our common stock equivalents and common partnership unit in future periods totaled 1.4 million. These securities representequivalents include options to purchase shares of Common Stock, which, if exercised, would result in Aimco’s issuance of additional shares and the Aimco Operating Partnership’s issuance to Aimco of additional common partnership units equal to the number of shares purchased under the options. These equivalents also include unvested TSR restricted stock awards that do not meet the definition of participating securities, which would result in the issuance of additional common shares and common partnership units equal to the number of shares that vest. The effect of these securities was dilutive for the years ended December 31, 2015, 20142016 and 2013,2015, and accordingly has been included in the denominator for calculating diluted earnings per share and unit during these periods. Participating securities, consisting primarily of unvested time-based
Our Time-Based Restricted Stock awards of restricted shares of Common Stock, receive dividends similar to shares of Common Stock and common partnership units and totaled 0.3 million, 0.5 million and 0.6 million at December 31, 2015, 2014 and 2013, respectively.prior to vesting. These dividends are not forfeited in the event the restricted stock does not vest. Therefore, the unvested restricted shares related to these awards are participating securities. The effect of participating securities is included in basic and diluted earnings (loss) per share and unit computations for the periods presented above using the two-class method of allocating distributed and undistributed earnings.

F-41


As discussed in Note 107, the Aimco Operating Partnership has various classes of preferred OP Units, which may be redeemed at the holders’ option. The Aimco Operating Partnership may redeem these units for cash, or at its option, shares of Common Stock. As of December 31, 2015,2016, these preferred OP Units were potentially redeemable for approximately 2.22.3 million shares of Common Stock (based on the period end market price), or cash. The Aimco Operating Partnership has a redemption policy that requires cash settlement of redemption requests for the preferred OP Units, subject to limited exceptions. Accordingly, we have excluded these securities from earnings per share and unit computations for the periods presented above, and we expect to exclude them in future periods.
Note 1411Unaudited Summarized Consolidated Quarterly InformationFair Value Measurements
AimcoRecurring Fair Value Measurements
Aimco’s summarized unauditedWe measure at fair value on a recurring basis our investment in the securitization trust that holds certain of our property debt, which we classify as available for sale (AFS) securities, and our interest rate swaps, both of which are classified within Level 2 of the GAAP fair value hierarchy.
Our investments classified as AFS are presented within other assets in the accompanying consolidated quarterly information forbalance sheets. We hold positions in the years endedsecuritization, which pay interest currently and we also hold the first loss position in the securitization, which accrues interest over the term of the investment. We are accreting the discount to the $100.9 million face value of the investments into interest income using the effective interest method over the remaining expected term of the investments, which as of December 31, 20152016, was approximately 4.4 years. Our amortized cost basis for these investments, which represents the original cost adjusted for interest accretion less interest payments received, was $72.5 million and 2014,$67.8 million at December 31, 2016 and 2015,

respectively. We estimated the fair value of these investments to be $76.1 million and $65.5 million at December 31, 2016 and 2015, respectively.
We estimate the fair value of these investments in accordance with GAAP using an income and market approach with primarily observable inputs, including yields and other information regarding similar types of investments, and adjusted for certain unobservable inputs specific to these investments. The fair value of the positions that pay interest currently typically moves in an inverse relationship with movements in interest rates. The fair value of the first loss position is provided belowprimarily correlated to collateral quality and demand for similar subordinate commercial mortgage-backed securities.
For our variable-rate debt, limited partners in our consolidated real estate partnerships sometimes require we limit our exposure to interest rate fluctuations by entering into interest rate swap agreements, which moderate our exposure to interest rate risk by effectively converting the interest on variable rate debt to a fixed rate. We estimate the fair value of interest rate swaps using an income approach with primarily observable inputs, including information regarding the hedged variable cash flows and forward yield curves relating to the variable interest rates on which the hedged cash flows are based.
The following table sets forth a summary of changes in fair value in our interest rate swaps (in thousands, except per share amounts).thousands):
  Quarter
2015 First Second Third Fourth
Total revenues $244,265
 $244,783
 $246,387
 $245,875
Total operating expenses (183,198) (179,140) (182,366) (180,391)
Operating income 61,067
 65,643
 64,021
 65,484
Income from continuing operations 18,457
 23,907
 23,769
 25,257
Gain on dispositions of real estate, net of tax 85,693
 44,781
 
 50,119
Net income 104,150
 68,688
 23,769
 75,376
Net income attributable to Aimco common stockholders $89,344
 $60,804
 $19,179
 $66,639
Earnings per common share - basic:        
Income from continuing operations attributable to Aimco common stockholders $0.58
 $0.39
 $0.12
 $0.43
Net income attributable to Aimco common stockholders $0.58
 $0.39
 $0.12
 $0.43
Earnings per common share - diluted:        
Income from continuing operations attributable to Aimco common stockholders $0.58
 $0.39
 $0.12
 $0.43
Net income attributable to Aimco common stockholders $0.58
 $0.39
 $0.12
 $0.43
Weighted average common shares outstanding - basic 153,821
 155,524
 155,639
 155,725
Weighted average common shares outstanding - diluted 154,277
 155,954
 156,008
 156,043
 Year Ended December 31,
 2016 2015 2014
Beginning liability balance$(4,938) $(5,273) $(4,604)
Unrealized losses included in interest expense(44) (44) (48)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss1,586
 1,678
 1,685
Unrealized gains (losses) included in equity and partners’ capital221
 (1,299) (2,306)
Ending liability balance$(3,175) $(4,938) $(5,273)
  Quarter
2014 First Second Third Fourth
Total revenues $248,924
 $246,418
 $246,843
 $242,178
Total operating expenses (183,646) (180,621) (179,376) (178,370)
Operating income 65,278
 65,797
 67,467
 63,808
Income from continuing operations 12,040
 17,943
 18,186
 19,306
Gain on dispositions of real estate, net of tax 69,492
 66,662
 126,329
 26,153
Net income 81,532
 84,605
 144,515
 45,459
Net income attributable to Aimco common stockholders $64,235
 $75,010
 $124,706
 $36,269
Earnings per common share - basic:        
Income from continuing operations attributable to Aimco common stockholders $0.44
 $0.51
 $0.86
 $0.25
Net income attributable to Aimco common stockholders $0.44
 $0.51
 $0.86
 $0.25
Earnings per common share - diluted:        
Income from continuing operations attributable to Aimco common stockholders $0.44
 $0.51
 $0.85
 $0.25
Net income attributable to Aimco common stockholders $0.44
 $0.51
 $0.85
 $0.25
Weighted average common shares outstanding - basic 145,473
 145,657
 145,672
 145,753
Weighted average common shares outstanding - diluted 145,681
 145,985
 146,104
 146,238

F-42


The Aimco Operating Partnership
The Aimco Operating Partnership’s summarized unaudited consolidated quarterly information for the years ended December 31, 20152016 and 2014,2015, we had interest rate swaps with aggregate notional amounts of $49.6 million and $49.9 million, respectively. As of December 31, 2016, these swaps had a weighted average remaining term of 4.0 years. We have designated these interest rate swaps as cash flow hedges. The fair value of these swaps is provided below (in thousands, except per unit amounts).presented within accrued liabilities and other in our consolidated balance sheets, and we recognize any changes in the fair value as an adjustment of accumulated other comprehensive loss within equity and partners’ capital to the extent of their effectiveness.
If the forward rates at December 31, 2016, remain constant, we estimate that during the next 12 months, we would reclassify into earnings approximately $1.3 million of the unrealized losses in accumulated other comprehensive loss. If market interest rates increase above the 3.44% weighted average fixed rate under these interest rate swaps we will benefit from net cash payments due to us from our counterparty to the interest rate swaps.
  Quarter
2015 First Second Third Fourth
Total revenues $244,265
 $244,783
 $246,387
 $245,875
Total operating expenses (183,198) (179,140) (182,366) (180,391)
Operating income 61,067
 65,643
 64,021
 65,484
Income from continuing operations 18,457
 23,907
 23,769
 25,257
Gain on dispositions of real estate, net of tax 85,693
 44,781
 
 50,119
Net income 104,150
 68,688
 23,769
 75,376
Net income attributable to the Partnership’s common unitholders $93,742
 $63,776
 $20,072
 $69,930
Earnings per common unit - basic:        
Income from continuing operations attributable to the Partnership’s common unitholders $0.58
 $0.39
 $0.12
 $0.43
Net income attributable to the Partnership’s common unitholders $0.58
 $0.39
 $0.12
 $0.43
Earnings per common unit - diluted:        
Income from continuing operations attributable to the Partnership’s common unitholders $0.58
 $0.39
 $0.12
 $0.43
Net income attributable to the Partnership’s common unitholders $0.58
 $0.39
 $0.12
 $0.43
Weighted average common units outstanding - basic 161,461
 163,149
 163,241
 163,485
Weighted average common units outstanding - diluted 161,917
 163,579
 163,610
 163,803
Fair Value Disclosures
We believe that the aggregate fair value of our cash and cash equivalents, receivables and payables approximates their aggregate carrying amounts at December 31, 2016 and 2015, due to their relatively short-term nature and high probability of realization. The estimated aggregate fair value of our consolidated total indebtedness was approximately $4.0 billion and $4.0 billion at December 31, 2016 and 2015, respectively, as compared to aggregate carrying amounts of $3.9 billion and $3.8 billion, respectively. Substantially all of the difference between the fair value and the carrying value relates to property debt secured by apartment communities we wholly own. We estimate the fair value of our consolidated debt using an income and market approach, including comparison of the contractual terms to observable and unobservable inputs such as market interest rate risk spreads, contractual interest rates, remaining periods to maturity, collateral quality and loan to value ratios on similarly encumbered apartment communities within our portfolio. We classify the fair value of our consolidated debt within Level 3 of the GAAP valuation hierarchy based on the significance of certain of the unobservable inputs used to estimate their fair values.
  Quarter
2014 First Second Third Fourth
Total revenues $248,924
 $246,418
 $246,843
 $242,178
Total operating expenses (183,646) (180,621) (179,376) (178,370)
Operating income 65,278
 65,797
 67,467
 63,808
Income from continuing operations 12,040
 17,943
 18,186
 19,306
Gain on dispositions of real estate, net of tax 69,492
 66,662
 126,329
 26,153
Net income 81,532
 84,605
 144,515
 45,459
Net income attributable to the Partnership’s common unitholders $67,846
 $78,745
 $131,255
 $38,144
Earnings per common unit - basic:        
Income from continuing operations attributable to the Partnership’s common unitholders $0.44
 $0.51
 $0.86
 $0.25
Net income attributable to the Partnership’s common unitholders $0.44
 $0.51
 $0.86
 $0.25
Earnings per common unit - diluted:        
Income from continuing operations attributable to the Partnership’s common unitholders $0.44
 $0.51
 $0.85
 $0.25
Net income attributable to the Partnership’s common unitholders $0.44
 $0.51
 $0.85
 $0.25
Weighted average common units outstanding - basic 153,329
 153,377
 153,337
 153,408
Weighted average common units outstanding - diluted 153,537
 153,705
 153,769
 153,893

F-43


Note 1512 — Business Segments
We have two reportable segments: conventional real estate operations and affordable real estate operations. Our conventional real estate reportable segment included 140operations consist of market-rate apartment communities with 40,464rents paid by the residents and included 130 apartment communities with 37,780 apartment homes at December 31, 2015.2016. Our affordable real estate operations consisted of 5646 apartment communities with 8,6857,610 apartment homes at December 31, 2015,2016, with rents that are generally paid, in whole or part, by a government agency.
Due to the diversity of our economic ownership interests in our apartment communities, our chief executive officer, who is our chief operating decision maker, uses proportionate property net operating income to assess the operating performance of our apartment communities. Proportionate property net operating income reflects our share of rental and other property revenues less

direct property operating expenses, including real estate taxes, for the consolidated and unconsolidated apartment communities that we own and manage.
The following tables present the revenues, net operating income (loss) and income (loss) from continuing operationsbefore gain on dispositions of our conventional and affordable real estate operations segments on a proportionate basis (excluding amounts related to apartment communities sold or classified as held for sale as of December 31, 2015)2016) for the years ended December 31, 2016, 2015 2014 and 20132014 (in thousands):
Conventional
Real Estate
Operations
 
Affordable
Real Estate
Operations
 
Proportionate
Adjustments (1)
 
Corporate and
Amounts Not
Allocated to
Segments (2)
 Consolidated
Conventional
Real Estate
Operations
 
Affordable
Real Estate
Operations
 
Proportionate
Adjustments (1)
 
Corporate and
Amounts Not
Allocated to
Segments (2)
 Consolidated
Year Ended December 31, 2015:         
Year Ended December 31, 2016:         
Rental and other property revenues (3)$798,321
 $96,549
 $37,369
 $24,715
 $956,954
$804,335
 $100,745
 $29,250
 $40,201
 $974,531
Tax credit and asset management revenues
 
 
 24,356
 24,356

 
 
 21,323
 21,323
Total revenues798,321
 96,549
 37,369
 49,071
 981,310
804,335
 100,745
 29,250
 61,524
 995,854
Property operating expenses (3)263,573
 38,484
 13,815
 43,521
 359,393
257,939
 38,644
 8,517
 47,327
 352,427
Investment management expenses
 
 
 5,855
 5,855

 
 
 4,333
 4,333
Depreciation and amortization (3)
 
 
 306,301
 306,301

 
 
 333,066
 333,066
General and administrative expenses
 
 
 43,178
 43,178

 
 
 44,937
 44,937
Other expenses, net
 
 
 10,368
 10,368

 
 
 14,295
 14,295
Total operating expenses263,573
 38,484
 13,815
 409,223
 725,095
257,939
 38,644
 8,517
 443,958
 749,058
Operating income (loss)534,748
 58,065
 23,554
 (360,152) 256,215
Other items included in continuing operations
 
 
 (164,825) (164,825)
Income (loss) from continuing operations$534,748
 $58,065
 $23,554
 $(524,977) $91,390
Net operating income546,396
 62,101
 20,733
 (382,434) 246,796
Other items included in income before gain on dispositions (3)
 
 
 (157,313) (157,313)
Income before gain on dispositions$546,396
 $62,101
 $20,733
 $(539,747) $89,483
Conventional
Real Estate
Operations
 
Affordable
Real Estate
Operations
 
Proportionate
Adjustments (1)
 
Corporate and
Amounts Not
Allocated to
Segments (2)
 Consolidated
Conventional
Real Estate
Operations
 
Affordable
Real Estate
Operations
 
Proportionate
Adjustments (1)
 
Corporate and
Amounts Not
Allocated to
Segments (2)
 Consolidated
Year Ended December 31, 2014:         
Year Ended December 31, 2015:         
Rental and other property revenues (3)$729,657
 $94,501
 $29,564
 $99,109
 $952,831
$752,141
 $93,433
 $29,602
 $81,778
 $956,954
Tax credit and asset management revenues
 
 
 31,532
 31,532

 
 
 24,356
 24,356
Total revenues729,657
 94,501
 29,564
 130,641
 984,363
752,141
 93,433
 29,602
 106,134
 981,310
Property operating expenses (3)245,264
 38,407
 8,878
 81,105
 373,654
246,557
 37,445
 9,076
 66,315
 359,393
Investment management expenses
 
 
 7,310
 7,310

 
 
 5,855
 5,855
Depreciation and amortization (3)
 
 
 282,608
 282,608

 
 
 306,301
 306,301
Provision for real estate impairment losses (3)
 
 
 1,820
 1,820
General and administrative expenses
 
 
 44,092
 44,092

 
 
 43,178
 43,178
Other expenses, net
 
 
 12,529
 12,529

 
 
 10,368
 10,368
Total operating expenses245,264
 38,407
 8,878
 429,464
 722,013
246,557
 37,445
 9,076
 432,017
 725,095
Operating income (loss)484,393
 56,094
 20,686
 (298,823) 262,350
Other items included in continuing operations
 
 
 (194,875) (194,875)
Income (loss) from continuing operations$484,393
 $56,094
 $20,686
 $(493,698) $67,475
Net operating income505,584
 55,988
 20,526
 (325,883) 256,215
Other items included in income before gain on dispositions (3)
 
 
 (164,825) (164,825)
Income before gain on dispositions$505,584
 $55,988
 $20,526
 $(490,708) $91,390

F-44


Conventional
Real Estate
Operations
 
Affordable
Real Estate
Operations
 
Proportionate
Adjustments (1)
 
Corporate and
Amounts Not
Allocated to
Segments (2)
 Consolidated
Conventional
Real Estate
Operations
 
Affordable
Real Estate
Operations
 
Proportionate
Adjustments (1)
 
Corporate and
Amounts Not
Allocated to
Segments (2)
 Consolidated
Year Ended December 31, 2013:         
Year Ended December 31, 2014:         
Rental and other property revenues (3)$679,422
 $93,033
 $66,489
 $100,287
 $939,231
$683,791
 $91,549
 $28,228
 $149,263
 $952,831
Tax credit and asset management revenues
 
 
 34,822
 34,822

 
 
 31,532
 31,532
Total revenues679,422
 93,033
 66,489
 135,109
 974,053
683,791
 91,549
 28,228
 180,795
 984,363
Property operating expenses (3)233,183
 37,433
 25,192
 79,902
 375,710
228,385
 37,123
 8,329
 99,817
 373,654
Investment management expenses
 
 
 4,341
 4,341

 
 
 7,310
 7,310
Depreciation and amortization (3)
 
 
 291,910
 291,910

 
 
 282,608
 282,608
General and administrative expenses
 
 
 45,670
 45,670

 
 
 44,092
 44,092
Other expenses, net
 
 
 7,403
 7,403

 
 
 14,349
 14,349
Total operating expenses233,183
 37,433
 25,192
 429,226
 725,034
228,385
 37,123
 8,329
 448,176
 722,013
Operating income (loss)446,239
 55,600
 41,297
 (294,117) 249,019
Other items included in continuing operations
 
 
 (214,423) (214,423)
Income (loss) from continuing operations$446,239
 $55,600
 $41,297
 $(508,540) $34,596
Net operating income455,406
 54,426
 19,899
 (267,381) 262,350
Other items included in income before gain on dispositions (3)
 
 
 (194,875) (194,875)
Income before gain on dispositions$455,406
 $54,426
 $19,899
 $(462,256) $67,475
(1)Represents adjustments for the noncontrolling interests in consolidated real estate partnerships’ share of the results of our consolidated apartment communities and the results of consolidated apartment communities that we do not manage, which are excluded from proportionate property net operating income for our measurement of segment performanceevaluation, but included in the related consolidated amounts, and our share of the results of operations of our unconsolidated real estate partnerships that we manage, which are included in our measurement of segment performance but excluded from the related consolidated amounts.
(2)Our basisIncludes operating results for assessing segment performance excludes the results of apartmentconsolidated communities sold or classified as held for sale. As discussed in Note 2, effective January 1, 2014,that we adopted ASU 2014-08, which revised the definition of a discontinued operation. In the segment presentation above, the current yeardo not manage and prior years' operating results for apartment communities sold or classified as held for sale during the years ended December 31,2016, 2015 and 2014, are presented within theor 2014. Corporate and Amounts Not Allocated to Segments column. The operating results for the year ended December 31, 2013, for apartment communities sold through December 31, 2013, are presented within discontinued operations and are accordingly excluded from the segment presentation above.
(3)Proportionate property net operating income, our key measurement of segment profit or loss excludesalso includes property management revenues (which are included in consolidated rental and other property revenues), property management expenses and casualty gains and losses (which are included in consolidated property operating expenses), and depreciation and amortization, which are not part of our segment performance.
(3)Other items included in income before gain on dispositions primarily consist of interest expense and provision for real estate impairment losses. Accordingly, we do not allocate these amounts to our segments.income tax benefit.
The assets of our reportable segments on a proportionate basis, together with the proportionate adjustments to reconcile these amounts to the consolidated assets of our segments, and the consolidated assets not allocated to our segments are as follows (in thousands):
December 31,December 31,
2015 20142016 2015
Conventional$5,107,059
 $4,841,402
$5,374,999
 $4,981,915
Affordable421,932
 439,488
399,188
 418,924
Proportionate adjustments (1)175,042
 179,323
172,831
 174,645
Corporate and other assets (2)440,161
 636,815
285,800
 543,197
Total consolidated assets$6,144,194
 $6,097,028
$6,232,818
 $6,118,681
(1)Represents adjustments for the noncontrolling interests in consolidated real estate partnerships’ share of the assets of our consolidated apartment communities, which are excluded from our measurement of segment financial condition, and our share of the assets of our unconsolidated real estate partnerships, which are included in our measure of segment financial condition.
(2)Our basis for assessing segment performance excludes the results of apartment communities sold or classified as held for sale, therefore,sale. Accordingly, assets related to apartment communities sold or classified as held for sale during the periods are included within Corporate and other assets for comparative periods presented.
For the years ended December 31, 2016, 2015, 2014 and 2013,2014, capital additions related to our conventional segment totaled $350.1$324.6 million, $355.4$341.4 million and $365.3$343.5 million, respectively, and capital additions related to our affordable segment totaled $12.9$11.1 million, $12.1$12.6 million and $10.7$11.6 million, respectively.

Note 13 — Variable Interest Entities
As discussed in Note 2, effective January 1, 2016, we adopted the amended guidance over consolidations. As a result, the Aimco Operating Partnership and each of our less than wholly-owned real estate partnerships has been deemed to have the characteristics of a VIE. However, we were not required to consolidate any previously unconsolidated entities or deconsolidate any previously consolidated entities as a result of the change in classification. Accordingly, there has been no change to the recognized amounts in our consolidated balance sheets and statements of operations or amounts reported in our consolidated statements of cash flows. We have, however, retrospectively revised the disclosure of significant assets and liabilities of consolidated VIEs as of December 31, 2015 shown below, to include the assets and liabilities of all of the Aimco Operating Partnership’s consolidated real estate partnerships that are now designated as VIEs but did not meet the previous VIE definition. We determined that an additional 14 consolidated partnerships owning 18 apartment communities with 6,186 apartment homes were VIEs under the new standard. These VIEs had assets of $885.9 million and liabilities of $645.3 million as of December 31, 2015. Because the Aimco Operating Partnership is a VIE, all of our assets and liabilities are held through a VIE.

Aimco, through the Aimco Operating Partnership, consolidates all VIEs for which we are the primary beneficiary. Generally, a VIE, is a legal entity in which the equity investors do not have the characteristics of a controlling financial interest or the equity investors lack sufficient equity at risk for the entity to finance its activities without additional subordinated financial support. A limited partnership is considered a VIE when the majority of the limited partners unrelated to the general partner possess neither the right to remove the general partner without cause, nor certain rights to participate in the decisions that most significantly affect the financial results of the partnership. In determining whether we are the primary beneficiary of a VIE, we consider qualitative and quantitative factors, including, but not limited to: which activities most significantly impact the VIE’s economic performance and which party controls such activities; the amount and characteristics of our investment; the obligation or likelihood for us or other investors to provide financial support; and the similarity with and significance to our business activities and the business activities of the other investors. Significant judgments related to these determinations include estimates about the current and future fair values and performance of real estate held by these VIEs and general market conditions.
The VIEs that own interests in conventional apartment communities typically hold between one and five apartment communities and are structured to generate a return for their partners through the operation and ultimate sale of the apartment communities. Substantially all of the VIEs that own interests in affordable apartment communities are partnerships structured to provide for the pass-through of low-income housing tax credits and deductions to their partners. The table below summarizes information regarding VIEs that are consolidated by the Aimco Operating Partnership:
F-45

 December 31,
 2016 2015
VIEs with interests in conventional apartment communities11
 13
Conventional apartment communities held by VIEs13
 17
Apartment homes in conventional communities held by VIEs5,313
 6,089
VIEs with interests in affordable apartment communities56
 62
Affordable apartment communities held by VIEs44
 48
Apartment homes in affordable communities held by VIEs6,890
 7,556

Assets of the Aimco Operating Partnership’s consolidated VIEs must first be used to settle the liabilities of such consolidated VIEs. These consolidated VIEs’ creditors do not have recourse to the general credit of the Aimco Operating Partnership. Assets and liabilities of VIEs are summarized in the table below (in thousands):
 December 31,
 2016 2015
Assets   
Net real estate$1,133,430
 $1,201,998
Cash and cash equivalents30,803
 28,118
Restricted cash40,523
 44,813
Liabilities   
Non-recourse property debt954,571
 959,523
Accrued liabilities and other31,204
 28,846

In addition to the consolidated VIEs discussed above, at December 31, 2015, our consolidated financial statements included certain interests in consolidated and unconsolidated partnerships that were part of the legacy asset management business. As discussed in Note 3, the majority of these assets and liabilities were derecognized during the year ended December 31, 2016.
Note 14 — Unaudited Summarized Consolidated Quarterly Information
Aimco
Aimco’s summarized unaudited consolidated quarterly information for the years ended December 31, 2016 and 2015, is provided below (in thousands, except per share amounts):
 Quarter
2016First Second Third Fourth
Total revenues$246,239
 $251,218
 $248,904
 $249,493
Total operating expenses182,705
 186,782
 190,172
 189,399
Operating income63,534
 64,436
 58,732
 60,094
Income before gain on dispositions23,698
 29,412
 15,538
 20,835
Gain on dispositions of real estate, net of tax6,187
 216,541
 14,498
 156,564
Net income29,885
 245,953
 30,036
 177,399
Net income attributable to Aimco common stockholders23,223
 221,382
 11,176
 162,000
Earnings per common share - basic:       
Net income attributable to Aimco common stockholders$0.15
 $1.42
 $0.07
 $1.04
Earnings per common share - diluted:       
Net income attributable to Aimco common stockholders$0.15
 $1.41
 $0.07
 $1.03
Weighted average common shares outstanding - basic155,791
 156,375
 156,079
 156,171
Weighted average common shares outstanding - diluted156,117
 156,793
 156,527
 156,540
 Quarter
2015First Second Third Fourth
Total revenues$244,265
 $244,783
 $246,387
 $245,875
Total operating expenses183,198
 179,140
 182,366
 180,391
Operating income61,067
 65,643
 64,021
 65,484
Income before gain on dispositions18,457
 23,907
 23,769
 25,257
Gain on dispositions of real estate, net of tax85,693
 44,781
 
 50,119
Net income104,150
 68,688
 23,769
 75,376
Net income attributable to Aimco common stockholders89,344
 60,804
 19,179
 66,639
Earnings per common share - basic and diluted:       
Net income attributable to Aimco common stockholders$0.58
 $0.39
 $0.12
 $0.43
Weighted average common shares outstanding - basic153,821
 155,524
 155,639
 155,725
Weighted average common shares outstanding - diluted154,277
 155,954
 156,008
 156,043

The Aimco Operating Partnership
The Aimco Operating Partnership’s summarized unaudited consolidated quarterly information for the years ended December 31, 2016 and 2015, is provided below (in thousands, except per unit amounts):
 Quarter
2016First Second Third Fourth
Total revenues$246,239
 $251,218
 $248,904
 $249,493
Total operating expenses182,705
 186,782
 190,172
 189,399
Operating income63,534
 64,436
 58,732
 60,094
Income before gain on dispositions23,698
 29,412
 15,538
 20,835
Gain on dispositions of real estate, net of tax6,187
 216,541
 14,498
 156,564
Net income29,885
 245,953
 30,036
 177,399
Net income attributable to the Partnership’s common unitholders24,395
 232,517
 11,368
 169,869
Earnings per common unit - basic:       
Net income attributable to the Partnership’s common unitholders$0.15
 $1.42
 $0.07
 $1.04
Earnings per common unit - diluted:       
Net income attributable to the Partnership’s common unitholders$0.15
 $1.41
 $0.07
 $1.03
Weighted average common units outstanding - basic163,639
 164,188
 163,832
 163,799
Weighted average common units outstanding - diluted163,965
 164,606
 164,280
 164,168
 Quarter
2015First Second Third Fourth
Total revenues$244,265
 $244,783
 $246,387
 $245,875
Total operating expenses183,198
 179,140
 182,366
 180,391
Operating income61,067
 65,643
 64,021
 65,484
Income before gain on dispositions18,457
 23,907
 23,769
 25,257
Gain on dispositions of real estate, net of tax85,693
 44,781
 
 50,119
Net income104,150
 68,688
 23,769
 75,376
Net income attributable to the Partnership’s common unitholders93,742
 63,776
 20,072
 69,930
Earnings per common unit - basic and diluted:       
Net income attributable to the Partnership’s common unitholders$0.58
 $0.39
 $0.12
 $0.43
Weighted average common units outstanding - basic161,461
 163,149
 163,241
 163,485
Weighted average common units outstanding - diluted161,917
 163,579
 163,610
 163,803

APARTMENT INVESTMENT AND MANAGEMENT COMPANY
AIMCO PROPERTIES, L.P.
SCHEDULE III: REAL ESTATE AND ACCUMULATED DEPRECIATION
December 31, 20152016
(In Thousands Except Apartment Home Data)
  (2)(3)    (2) 
 (1)   Initial Cost Cost CapitalizedDecember 31, 2015 (1)   Initial Cost Cost CapitalizedDecember 31, 2016
ApartmentDate  Year Apartment  Buildings and Subsequent to  Buildings and(4) Accumulated Total Cost ApartmentDate  Year Apartment  Buildings and Subsequent to  Buildings and(3) Accumulated Total Cost 
Apartment Community NameTypeConsolidatedLocation Built Homes Land Improvements Consolidation Land Improvements Total Depreciation (AD)  Net of AD EncumbrancesTypeConsolidatedLocation Built Homes Land Improvements Consolidation Land Improvements Total Depreciation (AD)  Net of AD Encumbrances
      
Conventional Apartment Communities:Conventional Apartment Communities:   Conventional Apartment Communities:   
100 Forest PlaceHigh RiseDec 1997Oak Park, IL1987234
$2,664
$18,815
$7,674
$2,664
$26,489
$29,153
$(12,726)$16,427
$
High RiseDec 1997Oak Park, IL1987234
$2,664
$18,815
$8,559
$2,664
$27,374
$30,038
$(13,668)$16,370
$
118-122 West 23rd StreetHigh RiseJun 2012New York, NY198742
14,985
23,459
6,171
14,985
29,630
44,615
(4,265)40,350
18,726
High RiseJun 2012New York, NY198742
14,985
23,459
6,229
14,985
29,688
44,673
(5,871)38,802
18,320
1582 First AvenueHigh RiseMar 2005New York, NY190017
4,281
752
363
4,281
1,115
5,396
(440)4,956
2,419
173 E. 90th StreetHigh RiseMay 2004New York, NY191072
12,066
4,535
3,008
12,066
7,543
19,609
(2,749)16,860
7,120
High RiseMay 2004New York, NY191072
12,066
4,535
5,630
12,066
10,165
22,231
(2,813)19,418
6,955
182-188 Columbus AvenueMid RiseFeb 2007New York, NY191032
19,123
3,300
3,789
19,123
7,089
26,212
(2,618)23,594
13,471
Mid RiseFeb 2007New York, NY191032
19,123
3,300
4,954
19,123
8,254
27,377
(2,862)24,515
13,471
1045 on the Park Apartments HomesMid RiseJul 2013Atlanta, GA201230
2,793
6,662
268
2,793
6,930
9,723
(843)8,880
5,868
1582 First AvenueHigh RiseMar 2005New York, NY190017
4,281
752
453
4,281
1,205
5,486
(434)5,052
2,365
21 FitzsimonsMid-RiseAug 2014Aurora, CO2008600
12,864
104,720
1,583
12,864
106,303
119,167
(5,055)114,112
48,995
Mid-RiseAug 2014Aurora, CO2008600
12,864
104,720
4,291
12,864
109,011
121,875
(9,021)112,854
48,081
234 East 88th StreetMid-RiseJan 2014New York, NY190020
2,448
4,449
482
2,448
4,931
7,379
(351)7,028
3,433
Mid-RiseJan 2014New York, NY190020
2,448
4,449
655
2,448
5,104
7,552
(606)6,946
3,366
236-238 East 88th StreetHigh RiseJan 2004New York, NY190043
8,820
2,914
1,789
8,820
4,703
13,523
(1,605)11,918
11,587
High RiseJan 2004New York, NY190043
8,820
2,914
1,820
8,820
4,734
13,554
(1,679)11,875
11,359
237-239 Ninth AvenueHigh RiseMar 2005New York, NY190036
8,495
1,866
2,820
8,495
4,686
13,181
(1,578)11,603
5,909
High RiseMar 2005New York, NY190036
8,495
1,866
3,146
8,495
5,012
13,507
(2,016)11,491
5,778
240 West 73rd Street, LLCHigh RiseSep 2004New York, NY1900200
68,109
12,140
9,914
68,109
22,054
90,163
(7,797)82,366

High RiseSep 2004New York, NY1900200
68,109
12,140
11,172
68,109
23,312
91,421
(8,242)83,179

2900 on First ApartmentsMid RiseOct 2008Seattle, WA1989135
19,070
17,518
32,320
19,070
49,838
68,908
(11,931)56,977

Mid RiseOct 2008Seattle, WA1989135
19,070
17,518
32,524
19,070
50,042
69,112
(16,740)52,372
14,482
306 East 89th StreetHigh RiseJul 2004New York, NY193020
2,680
1,006
525
2,680
1,531
4,211
(522)3,689
1,973
High RiseJul 2004New York, NY193020
2,680
1,006
831
2,680
1,837
4,517
(622)3,895
1,929
311 & 313 East 73rd StreetMid RiseMar 2003New York, NY190434
5,678
1,609
503
5,678
2,112
7,790
(1,293)6,497
4,159
Mid RiseMar 2003New York, NY190434
5,678
1,609
433
5,678
2,042
7,720
(1,287)6,433
4,077
322-324 East 61st StreetHigh RiseMar 2005New York, NY190040
6,372
2,224
1,175
6,372
3,399
9,771
(1,456)8,315
3,628
High RiseMar 2005New York, NY190040
6,372
2,224
1,304
6,372
3,528
9,900
(1,545)8,355
3,548
3400 Avenue of the ArtsMid RiseMar 2002Costa Mesa, CA1987770
57,241
65,506
73,411
57,241
138,917
196,158
(77,731)118,427
108,983
Mid RiseMar 2002Costa Mesa, CA1987770
57,241
65,506
75,644
57,241
141,150
198,391
(80,828)117,563
152,000
452 East 78th StreetHigh RiseJan 2004New York, NY190012
1,982
608
397
1,982
1,005
2,987
(381)2,606
2,708
High RiseJan 2004New York, NY190012
1,982
608
447
1,982
1,055
3,037
(400)2,637
2,655
464-466 Amsterdam & 200-210 W. 83rd StreetMid RiseFeb 2007New York, NY191071
25,553
7,101
5,268
25,553
12,369
37,922
(4,936)32,986
19,679
Mid RiseFeb 2007New York, NY191071
25,553
7,101
5,413
25,553
12,514
38,067
(5,344)32,723
19,679
510 East 88th StreetHigh RiseJan 2004New York, NY190020
3,163
1,002
399
3,163
1,401
4,564
(450)4,114
2,902
High RiseJan 2004New York, NY190020
3,163
1,002
584
3,163
1,586
4,749
(490)4,259
2,845
514-516 East 88th StreetHigh RiseMar 2005New York, NY190036
6,282
2,168
842
6,282
3,010
9,292
(1,213)8,079
3,933
High RiseMar 2005New York, NY190036
6,282
2,168
1,214
6,282
3,382
9,664
(1,370)8,294
3,846
518 East 88th StreetMid-RiseJan 2014New York, NY190020
2,233
4,315
469
2,233
4,784
7,017
(365)6,652
2,974
Mid-RiseJan 2014New York, NY190020
2,233
4,315
478
2,233
4,793
7,026
(616)6,410
2,916
707 LeahyGardenApr 2007Redwood City, CA1973110
15,444
7,909
5,527
15,444
13,436
28,880
(6,065)22,815
9,284
GardenApr 2007Redwood City, CA1973110
15,444
7,909
5,551
15,444
13,460
28,904
(6,408)22,496
9,112
865 BellevueGardenJul 2000Nashville, TN1972326
3,562
12,037
28,446
3,562
40,483
44,045
(25,489)18,556
17,533
GardenJul 2000Nashville, TN1972326
3,562
12,037
25,750
3,562
37,787
41,349
(24,013)17,336
17,192
1045 on the Park Apartments HomesMid RiseJul 2013Atlanta, GA201230
2,793
6,662
139
2,793
6,801
9,594
(592)9,002
5,981
Axiom Apartment HomesMid RiseApr 2015Cambridge, MA2015115

63,612
165

63,777
63,777
(1,580)62,197
35,000
Mid RiseApr 2015Cambridge, MA2015115

63,612
1,025

64,637
64,637
(3,941)60,696
34,351
Bank LoftsHigh RiseApr 2001Denver, CO1920125
3,525
9,045
3,632
3,525
12,677
16,202
(6,053)10,149
11,181
High RiseApr 2001Denver, CO1920125
3,525
9,045
3,723
3,525
12,768
16,293
(6,411)9,882
10,957
Bay Parc PlazaHigh RiseSep 2004Miami, FL2000471
22,680
41,847
9,486
22,680
51,333
74,013
(14,939)59,074
44,194
High RiseSep 2004Miami, FL2000471
22,680
41,847
12,305
22,680
54,152
76,832
(16,466)60,366
43,631
Bay Ridge at NashuaGardenJan 2003Nashua, NH1984412
3,262
40,713
5,300
3,262
46,013
49,275
(18,304)30,971
29,820
GardenJan 2003Nashua, NH1984412
3,262
40,713
7,857
3,262
48,570
51,832
(20,124)31,708
29,311
Bayberry Hill EstatesGardenAug 2002Framingham, MA1971424
19,944
35,945
12,765
19,944
48,710
68,654
(22,056)46,598
32,051
GardenAug 2002Framingham, MA1971424
19,944
35,945
13,657
19,944
49,602
69,546
(22,871)46,675
31,399
Bluffs at Pacifica, TheGardenOct 2006Pacifica, CA196364
8,108
4,132
14,672
8,108
18,804
26,912
(9,922)16,990
5,694
GardenOct 2006Pacifica, CA196364
8,108
4,132
19,221
8,108
23,353
31,461
(10,876)20,585

Boston LoftsHigh RiseApr 2001Denver, CO1890158
3,446
20,589
5,634
3,446
26,223
29,669
(12,820)16,849
16,333
High RiseApr 2001Denver, CO1890158
3,446
20,589
5,559
3,446
26,148
29,594
(13,350)16,244
16,007
Boulder CreekGardenJul 1994Boulder, CO1973221
754
7,730
20,205
754
27,935
28,689
(16,502)12,187
6,708
GardenJul 1994Boulder, CO1973221
754
7,730
20,110
754
27,840
28,594
(17,518)11,076
5,547
Broadcast CenterGardenMar 2002Los Angeles, CA1990279
29,407
41,244
27,070
29,407
68,314
97,721
(34,668)63,053

GardenMar 2002Los Angeles, CA1990279
29,407
41,244
22,509
29,407
63,753
93,160
(30,936)62,224
56,679
Broadway LoftsHigh RiseSep 2012San Diego, CA190984
5,367
14,442
1,297
5,367
15,739
21,106
(1,862)19,244
9,448
High RiseSep 2012San Diego, CA190984
5,367
14,442
2,522
5,367
16,964
22,331
(2,632)19,699
9,052
Burke Shire CommonsGardenMar 2001Burke, VA1986360
4,867
23,617
13,699
4,867
37,316
42,183
(17,380)24,803
40,536
GardenMar 2001Burke, VA1986360
4,867
23,617
15,259
4,867
38,876
43,743
(19,677)24,066
39,639
Calhoun Beach ClubHigh RiseDec 1998Minneapolis, MN1928332
11,708
73,334
54,533
11,708
127,867
139,575
(67,386)72,189
45,050
High RiseDec 1998Minneapolis, MN1928332
11,708
73,334
56,061
11,708
129,395
141,103
(71,570)69,533
44,200
Canyon TerraceGardenMar 2002Saugus, CA1984130
7,508
6,601
6,024
7,508
12,625
20,133
(7,170)12,963
9,708
GardenMar 2002Saugus, CA1984130
7,508
6,601
5,795
7,508
12,396
19,904
(7,207)12,697
9,502
Cedar RimGardenApr 2000Newcastle, WA1980104
761
5,218
16,939
761
22,157
22,918
(18,439)4,479
7,246
GardenApr 2000Newcastle, WA1980104
761
5,218
12,754
761
17,972
18,733
(14,512)4,221
7,117
Charlesbank Apartment HomesMid RiseSep 2013Watertown, MA201244
3,399
11,726
281
3,399
12,007
15,406
(966)14,440
8,214
Mid RiseSep 2013Watertown, MA201244
3,399
11,726
398
3,399
12,124
15,523
(1,416)14,107
8,055
Chestnut HallHigh RiseOct 2006Philadelphia, PA1923315
12,338
14,299
10,196
12,338
24,495
36,833
(13,517)23,316
38,940
High RiseOct 2006Philadelphia, PA1923315
12,338
14,299
7,938
12,338
22,237
34,575
(10,247)24,328
38,205
Chestnut Hill VillageGardenApr 2000Philadelphia, PA1963821
6,469
49,316
43,542
6,469
92,858
99,327
(57,694)41,633
54,374
GardenApr 2000Philadelphia, PA1963821
6,469
49,316
40,437
6,469
89,753
96,222
(55,446)40,776
75,000
Chimneys of Cradle RockGardenJun 2004Columbia, MD1979198
2,040
8,108
536
2,040
8,644
10,684
(2,889)7,795
15,619
GardenJun 2004Columbia, MD1979198
2,040
8,108
706
2,040
8,814
10,854
(3,329)7,525
15,329

F-46


  (2)(3)    (2) 
 (1)   Initial Cost Cost CapitalizedDecember 31, 2015 (1)   Initial Cost Cost CapitalizedDecember 31, 2016
ApartmentDate  Year Apartment  Buildings and Subsequent to  Buildings and(4) Accumulated Total Cost ApartmentDate  Year Apartment  Buildings and Subsequent to  Buildings and(3) Accumulated Total Cost 
Apartment Community NameTypeConsolidatedLocation Built Homes Land Improvements Consolidation Land Improvements Total Depreciation (AD)  Net of AD EncumbrancesTypeConsolidatedLocation Built Homes Land Improvements Consolidation Land Improvements Total Depreciation (AD)  Net of AD Encumbrances
      
Columbus AvenueMid RiseSep 2003New York, NY188059
35,527
9,450
5,137
35,527
14,587
50,114
(8,251)41,863
26,853
Mid RiseSep 2003New York, NY188059
35,527
9,450
5,707
35,527
15,157
50,684
(8,737)41,947
26,327
CreeksideGardenJan 2000Denver, CO1974328
3,189
12,698
5,882
3,189
18,580
21,769
(11,630)10,139
12,021
GardenJan 2000Denver, CO1974328
3,189
12,698
5,986
3,189
18,684
21,873
(12,157)9,716
11,802
Crescent at West Hollywood, TheMid RiseMar 2002West Hollywood, CA1985130
15,765
10,215
14,535
15,765
24,750
40,515
(17,836)22,679

Mid RiseMar 2002West Hollywood, CA1985130
15,765
10,215
10,872
15,765
21,087
36,852
(14,386)22,466

EastpointeGardenDec 2014Boulder, CO1970140
15,300
2,705
53
15,300
2,758
18,058
(98)17,960

GardenDec 2014Boulder, CO1970140
15,300
2,705
1,868
15,300
4,573
19,873
(201)19,672

Elm CreekMid RiseDec 1997Elmhurst, IL1987400
5,910
30,830
29,904
5,910
60,734
66,644
(26,752)39,892
39,940
Mid RiseDec 1997Elmhurst, IL1987400
5,910
30,830
29,140
5,910
59,970
65,880
(28,201)37,679

Evanston PlaceHigh RiseDec 1997Evanston, IL1990190
3,232
25,546
11,823
3,232
37,369
40,601
(16,285)24,316
20,005
High RiseDec 1997Evanston, IL1990190
3,232
25,546
12,484
3,232
38,030
41,262
(17,136)24,126
19,659
FarmingdaleMid RiseOct 2000Darien, IL1975240
11,763
15,174
9,766
11,763
24,940
36,703
(11,975)24,728
14,979
Mid RiseOct 2000Darien, IL1975240
11,763
15,174
8,408
11,763
23,582
35,345
(11,117)24,228
14,397
Flamingo TowersHigh RiseSep 1997Miami Beach, FL19601,227
32,430
48,808
267,185
32,434
315,989
348,423
(137,704)210,719
109,398
High RiseSep 1997Miami Beach, FL19601,268
32,427
48,808
288,908
32,427
337,716
370,143
(148,984)221,159
107,457
Four Quarters HabitatGardenJan 2006Miami, FL1976336
2,379
17,199
20,843
2,379
38,042
40,421
(21,879)18,542
6,781
GardenJan 2006Miami, FL1976336
2,379
17,199
22,966
2,379
40,165
42,544
(22,762)19,782
5,742
FoxchaseGardenDec 1997Alexandria, VA19402,113
15,496
96,062
38,356
15,496
134,418
149,914
(73,312)76,602
237,881
GardenDec 1997Alexandria, VA19402,113
15,496
96,062
40,988
15,496
137,050
152,546
(75,841)76,705
233,383
GeorgetownGardenAug 2002Framingham, MA1964207
12,351
13,168
2,700
12,351
15,868
28,219
(6,769)21,450
7,863
GardenAug 2002Framingham, MA1964207
12,351
13,168
3,249
12,351
16,417
28,768
(7,366)21,402
6,867
Georgetown IIMid RiseAug 2002Framingham, MA195872
4,577
4,057
1,252
4,577
5,309
9,886
(2,595)7,291
2,634
Mid RiseAug 2002Framingham, MA195872
4,577
4,057
1,454
4,577
5,511
10,088
(2,821)7,267
2,301
Grand PointeGardenDec 1999Columbia, MD1972325
2,714
16,771
5,977
2,714
22,748
25,462
(11,931)13,531

Heritage Park EscondidoGardenOct 2000Escondido, CA1986196
1,055
7,565
1,659
1,055
9,224
10,279
(6,112)4,167
6,831
GardenOct 2000Escondido, CA1986196
1,055
7,565
2,095
1,055
9,660
10,715
(6,404)4,311
6,610
Heritage Park LivermoreGardenOct 2000Livermore, CA1988167

10,209
1,625

11,834
11,834
(7,036)4,798
7,060
GardenOct 2000Livermore, CA1988167

10,209
1,640

11,849
11,849
(7,426)4,423
6,838
Heritage Village AnaheimGardenOct 2000Anaheim, CA1986196
1,832
8,541
1,455
1,832
9,996
11,828
(6,295)5,533
8,291
GardenOct 2000Anaheim, CA1986196
1,832
8,541
1,810
1,832
10,351
12,183
(6,401)5,782
8,024
Hidden CoveGardenJul 1998Escondido, CA1983334
3,043
17,616
10,350
3,043
27,966
31,009
(14,817)16,192
35,320
GardenJul 1998Escondido, CA1983334
3,043
17,616
10,783
3,043
28,399
31,442
(14,933)16,509
34,563
Hidden Cove IIGardenJul 2007Escondido, CA1986118
12,849
6,530
7,063
12,849
13,593
26,442
(7,274)19,168
14,310
GardenJul 2007Escondido, CA1986118
12,849
6,530
7,109
12,849
13,639
26,488
(7,600)18,888
14,005
HillcresteGardenMar 2002Century City, CA1989315
35,862
47,216
18,465
35,862
65,681
101,543
(31,011)70,532
67,724
GardenMar 2002Century City, CA1989315
35,862
47,216
12,798
35,862
60,014
95,876
(26,435)69,441
66,372
HillmeadeGardenNov 1994Nashville, TN1986288
2,872
16,070
12,287
2,872
28,357
31,229
(16,545)14,684
16,307
GardenNov 1994Nashville, TN1986288
2,872
16,070
16,535
2,872
32,605
35,477
(17,769)17,708
15,891
Horizons West ApartmentsMid RiseDec 2006Pacifica, CA197078
8,887
6,377
2,373
8,887
8,750
17,637
(3,752)13,885

Mid RiseDec 2006Pacifica, CA197078
8,887
6,377
2,279
8,887
8,656
17,543
(3,902)13,641
14,319
Hunt ClubGardenSep 2000Gaithersburg, MD1986336
17,859
13,149
9,320
17,859
22,469
40,328
(11,993)28,335

GardenSep 2000Gaithersburg, MD1986336
17,859
13,149
11,954
17,859
25,103
42,962
(13,256)29,706

Hunter's ChaseGardenJan 2001Midlothian, VA1985320
7,935
7,915
3,156
7,935
11,071
19,006
(5,032)13,974
14,704
GardenJan 2001Midlothian, VA1985320
7,935
7,915
2,743
7,935
10,658
18,593
(4,909)13,684
14,347
Hunters GlenGardenOct 1999Plainsboro, NJ1976896
8,778
47,259
39,501
8,778
86,760
95,538
(63,424)32,114
62,228
GardenOct 1999Plainsboro, NJ1976896
8,778
47,259
38,780
8,778
86,039
94,817
(64,072)30,745
61,073
Hyde Park TowerHigh RiseOct 2004Chicago, IL1990155
4,731
14,927
5,076
4,731
20,003
24,734
(5,429)19,305
13,499
High RiseOct 2004Chicago, IL1990155
4,731
14,927
10,782
4,731
25,709
30,440
(6,459)23,981
13,219
Indian OaksGardenMar 2002Simi Valley, CA1986254
24,523
15,801
5,323
24,523
21,124
45,647
(10,467)35,180

GardenMar 2002Simi Valley, CA1986254
24,523
15,801
5,819
24,523
21,620
46,143
(11,010)35,133

IndigoGardenAug 2016Redwood City, CA2016463
26,944
296,104
481
26,944
296,585
323,529
(3,889)319,640
144,294
Island ClubGardenOct 2000Oceanside, CA1986592
18,027
28,654
16,400
18,027
45,054
63,081
(27,267)35,814
58,917
GardenOct 2000Oceanside, CA1986592
18,027
28,654
15,868
18,027
44,522
62,549
(27,851)34,698
57,691
Key TowersHigh RiseApr 2001Alexandria, VA1964140
1,526
7,050
6,794
1,526
13,844
15,370
(9,988)5,382
9,939
High RiseApr 2001Alexandria, VA1964140
1,526
7,050
6,647
1,526
13,697
15,223
(10,176)5,047
9,748
LakesideGardenOct 1999Lisle, IL1972568
5,840
27,937
32,367
5,840
60,304
66,144
(40,623)25,521
26,830
GardenOct 1999Lisle, IL1972568
5,840
27,937
24,090
5,840
52,027
57,867
(33,575)24,292
26,288
Lakeside at Vinings MountainGardenJan 2000Atlanta, GA1983220
2,111
11,862
15,536
2,111
27,398
29,509
(19,806)9,703
13,985
LatrobeHigh RiseJan 2003Washington, DC1980175
3,459
9,103
16,471
3,459
25,574
29,033
(17,915)11,118
28,460
High RiseJan 2003Washington, DC1980175
3,459
9,103
13,142
3,459
22,245
25,704
(14,555)11,149
27,923
Lincoln Place (5)GardenOct 2004Venice, CA1951795
128,332
10,439
331,935
44,197
342,374
386,571
(41,609)344,962
197,449
Lincoln Place (4)GardenOct 2004Venice, CA1951795
128,332
10,439
332,696
44,197
343,135
387,332
(68,663)318,669
194,280
Lodge at Chattahoochee, TheGardenOct 1999Sandy Springs, GA1970312
2,335
16,370
20,826
2,335
37,196
39,531
(24,539)14,992
20,530
GardenOct 1999Sandy Springs, GA1970312
2,335
16,370
17,039
2,335
33,409
35,744
(21,211)14,533
20,163
Malibu CanyonGardenMar 2002Calabasas, CA1986698
69,834
53,438
21,973
69,834
75,411
145,245
(36,536)108,709
111,854
GardenMar 2002Calabasas, CA1986698
69,834
53,438
24,778
69,834
78,216
148,050
(38,744)109,306
109,803
Maple BayGardenDec 1999Virginia Beach, VA1971414
2,597
16,141
28,071
2,597
44,212
46,809
(30,732)16,077

GardenDec 1999Virginia Beach, VA1971414
2,597
16,141
23,069
2,597
39,210
41,807
(26,882)14,925

Mariner'sGardenMar 2002San Diego, CA1984500

66,861
7,956

74,817
74,817
(32,476)42,341

Mariner's CoveGardenMar 2002San Diego, CA1984500

66,861
7,572

74,433
74,433
(34,371)40,062

Meadow CreekGardenJul 1994Boulder, CO1968332
1,435
24,533
4,863
1,435
29,396
30,831
(15,893)14,938

GardenJul 1994Boulder, CO1968332
1,435
24,533
5,785
1,435
30,318
31,753
(16,363)15,390
41,984
Merrill HouseHigh RiseJan 2000Falls Church, VA1964159
1,836
10,831
7,558
1,836
18,389
20,225
(9,281)10,944
17,911
High RiseJan 2000Falls Church, VA1964159
1,836
10,831
7,621
1,836
18,452
20,288
(9,840)10,448
17,584
MezzoHigh RiseMar 2015Atlanta, GA200894
4,292
34,178
9
4,292
34,187
38,479
(1,153)37,326
24,962
High RiseMar 2015Atlanta, GA200894
4,292
34,178
664
4,292
34,842
39,134
(2,723)36,411
24,490
Monterey GroveGardenJun 2008San Jose, CA1999224
34,325
21,939
4,178
34,325
26,117
60,442
(9,158)51,284

GardenJun 2008San Jose, CA1999224
34,325
21,939
5,732
34,325
27,671
61,996
(10,254)51,742

Ocean House on ProspectMid RiseApr 2013La Jolla, CA197053
12,528
18,805
14,615
12,528
33,420
45,948
(684)45,264
13,906
Mid RiseApr 2013La Jolla, CA197053
12,528
18,805
14,788
12,528
33,593
46,121
(2,597)43,524
13,621
One CanalHigh RiseSep 2013Boston, MAIn process310

15,873
146,811

162,684
162,684
(1)162,683
86,151
High RiseSep 2013Boston, MA2016310

15,873
176,087

191,960
191,960
(4,269)187,691
110,085
Pacific Bay Vistas (5)GardenMar 2001San Bruno, CA1987308
28,694
62,460
36,590
23,354
99,050
122,404
(14,841)107,563
70,356
Pacific Bay Vistas (4)GardenMar 2001San Bruno, CA1987308
28,694
62,460
36,905
23,354
99,365
122,719
(21,682)101,037
69,547
Pacifica ParkGardenJul 2006Pacifica, CA1977104
12,970
6,579
4,465
12,970
11,044
24,014
(5,001)19,013
11,687
GardenJul 2006Pacifica, CA1977104
12,970
6,579
7,496
12,970
14,075
27,045
(4,894)22,151
11,447
Palazzo at Park La Brea, TheMid RiseFeb 2004Los Angeles, CA2002521
48,362
125,464
30,633
48,362
156,097
204,459
(65,684)138,775
170,000
Mid RiseFeb 2004Los Angeles, CA2002521
48,362
125,464
31,959
48,362
157,423
205,785
(65,393)140,392
170,000
Palazzo East at Park La Brea, TheMid RiseMar 2005Los Angeles, CA2005611
72,578
136,503
18,586
72,578
155,089
227,667
(61,475)166,192
117,447
Mid RiseMar 2005Los Angeles, CA2005611
72,578
136,503
15,257
72,578
151,760
224,338
(61,449)162,889
114,524
Park Towne PlaceHigh RiseApr 2000Philadelphia, PA1959948
10,472
47,301
213,782
10,472
261,083
271,555
(59,556)211,999

High RiseApr 2000Philadelphia, PA1959948
10,472
47,301
272,057
10,472
319,358
329,830
(73,876)255,954

ParkwayGardenMar 2000Willamsburg, VA1971148
386
2,834
2,757
386
5,591
5,977
(3,450)2,527

GardenMar 2000Willamsburg, VA1971148
386
2,834
2,748
386
5,582
5,968
(3,504)2,464

Pathfinder VillageGardenJan 2006Fremont, CA1973246
19,595
14,838
12,323
19,595
27,161
46,756
(12,248)34,508
38,889

F-47


  (2)(3)    (2) 
 (1)   Initial Cost Cost CapitalizedDecember 31, 2015 (1)   Initial Cost Cost CapitalizedDecember 31, 2016
ApartmentDate  Year Apartment  Buildings and Subsequent to  Buildings and(4) Accumulated Total Cost ApartmentDate  Year Apartment  Buildings and Subsequent to  Buildings and(3) Accumulated Total Cost 
Apartment Community NameTypeConsolidatedLocation Built Homes Land Improvements Consolidation Land Improvements Total Depreciation (AD)  Net of AD EncumbrancesTypeConsolidatedLocation Built Homes Land Improvements Consolidation Land Improvements Total Depreciation (AD)  Net of AD Encumbrances
      
Pathfinder VillageGardenJan 2006Fremont, CA1973246
19,595
14,838
10,266
19,595
25,104
44,699
(11,145)33,554
39,604
Peachtree ParkGardenJan 1996Atlanta, GA1969303
4,684
11,713
12,506
4,684
24,219
28,903
(13,562)15,341
7,301
GardenJan 1996Atlanta, GA1969303
4,684
11,713
12,683
4,684
24,396
29,080
(14,558)14,522
1,708
Peak at Vinings Mountain, TheGardenJan 2000Atlanta, GA1980280
2,651
13,660
18,395
2,651
32,055
34,706
(23,516)11,190
14,776
Plantation GardensGardenOct 1999Plantation ,FL1971372
3,773
19,443
19,344
3,773
38,787
42,560
(21,336)21,224
21,737
GardenOct 1999Plantation, FL1971372
3,773
19,443
20,944
3,773
40,387
44,160
(23,226)20,934
21,245
Post RidgeGardenJul 2000Nashville, TN1972150
1,883
6,712
4,557
1,883
11,269
13,152
(7,181)5,971
5,465
GardenJul 2000Nashville, TN1972150
1,883
6,712
4,741
1,883
11,453
13,336
(7,617)5,719
5,346
Preserve at MarinMid RiseAug 2011Corte Madera, CA1964126
18,179
30,132
81,024
18,179
111,156
129,335
(7,458)121,877
38,478
Mid RiseAug 2011Corte Madera, CA1964126
18,179
30,132
81,591
18,179
111,723
129,902
(13,604)116,298
37,772
Ravensworth TowersHigh RiseJun 2004Annandale, VA1974219
3,455
17,157
3,055
3,455
20,212
23,667
(12,328)11,339
21,613
High RiseJun 2004Annandale, VA1974219
3,455
17,157
3,426
3,455
20,583
24,038
(13,074)10,964
21,213
ReflectionsGardenSep 2000Virginia Beach, VA1987480
15,988
13,684
4,840
15,988
18,524
34,512
(9,758)24,754
29,352
GardenSep 2000Virginia Beach, VA1987480
15,988
13,684
4,769
15,988
18,453
34,441
(9,995)24,446
28,798
River Club,TheGardenApr 2005Edgewater, NJ1998266
30,579
30,638
3,783
30,579
34,421
65,000
(12,764)52,236

GardenApr 2005Edgewater, NJ1998266
30,579
30,638
5,792
30,579
36,430
67,009
(14,132)52,877

RiverloftHigh RiseOct 1999Philadelphia, PA1910184
2,120
11,286
29,301
2,120
40,587
42,707
(18,171)24,536
12,495
High RiseOct 1999Philadelphia, PA1910184
2,120
11,286
29,712
2,120
40,998
43,118
(19,777)23,341
10,981
RiversideHigh RiseApr 2000Alexandria ,VA19731,222
10,854
65,473
91,415
10,854
156,888
167,742
(110,957)56,785
114,639
RosewoodGardenMar 2002Camarillo, CA1976152
12,430
8,060
3,600
12,430
11,660
24,090
(5,475)18,615
16,697
GardenMar 2002Camarillo, CA1976152
12,430
8,060
3,784
12,430
11,844
24,274
(5,878)18,396
16,405
Royal Crest EstatesGardenAug 2002Warwick, RI1972492
22,433
24,095
4,365
22,433
28,460
50,893
(17,152)33,741
34,670
GardenAug 2002Warwick, RI1972492
22,433
24,095
3,925
22,433
28,020
50,453
(18,004)32,449
34,008
Royal Crest EstatesGardenAug 2002Nashua, NH1970902
68,230
45,562
11,025
68,230
56,587
124,817
(36,300)88,517
32,759
GardenAug 2002Nashua, NH1970902
68,230
45,562
11,363
68,230
56,925
125,155
(36,660)88,495
29,106
Royal Crest EstatesGardenAug 2002Marlborough, MA1970473
25,178
28,786
8,731
25,178
37,517
62,695
(20,443)42,252
32,188
GardenAug 2002Marlborough, MA1970473
25,178
28,786
9,324
25,178
38,110
63,288
(22,450)40,838
31,533
Royal Crest EstatesGardenAug 2002North Andover, MA1970588
51,292
36,808
21,462
51,292
58,270
109,562
(27,517)82,045

GardenAug 2002North Andover, MA1970588
51,292
36,808
22,813
51,292
59,621
110,913
(30,114)80,799
43,098
Savannah TraceGardenMar 2001Shaumburg, IL1986368
13,960
20,731
5,185
13,960
25,916
39,876
(13,367)26,509
24,142
GardenMar 2001Shaumburg, IL1986368
13,960
20,731
9,061
13,960
29,792
43,752
(14,790)28,962
23,685
Saybrook PointGardenDec 2014San Jose, CA1995324
32,842
84,457
625
32,842
85,082
117,924
(2,957)114,967
64,861
Saybrook PointeGardenDec 2014San Jose, CA1995324
32,842
84,457
8,106
32,842
92,563
125,405
(5,927)119,478
64,709
ScotchollowGardenJan 2006San Mateo, CA1971418
49,475
17,756
12,635
49,475
30,391
79,866
(14,101)65,765
75,749
GardenJan 2006San Mateo, CA1971418
49,475
17,756
13,323
49,475
31,079
80,554
(15,120)65,434
74,309
Shenandoah CrossingGardenSep 2000Fairfax, VA1984640
18,200
57,198
19,746
18,200
76,944
95,144
(43,570)51,574
61,964
GardenSep 2000Fairfax, VA1984640
18,200
57,198
22,028
18,200
79,226
97,426
(48,157)49,269

Springwoods at Lake RidgeGardenJul 2002Woodbridge, VA1984180
5,587
7,284
2,857
5,587
10,141
15,728
(3,214)12,514

GardenJul 2002Woodbridge, VA1984180
5,587
7,284
2,897
5,587
10,181
15,768
(3,705)12,063

SteeplechaseGardenSep 2000Largo, MD1986240
3,675
16,111
4,464
3,675
20,575
24,250
(11,298)12,952

GardenSep 2000Largo, MD1986240
3,675
16,111
6,324
3,675
22,435
26,110
(11,814)14,296

Sterling Apartment Homes, TheGardenOct 1999Philadelphia, PA1961535
8,871
55,365
75,489
8,871
130,854
139,725
(49,401)90,324
69,983
GardenOct 1999Philadelphia, PA1961534
8,871
55,365
105,461
8,871
160,826
169,697
(58,654)111,043
68,370
Stone Creek ClubGardenSep 2000Germantown, MD1984240
13,593
9,347
6,895
13,593
16,242
29,835
(10,321)19,514

GardenSep 2000Germantown, MD1984240
13,593
9,347
7,086
13,593
16,433
30,026
(11,230)18,796

Timbers at Long Reach Apartment HomesGardenApr 2005Columbia, MD1979178
2,430
12,181
496
2,430
12,677
15,107
(6,704)8,403
12,896
GardenApr 2005Columbia, MD1979178
2,430
12,181
889
2,430
13,070
15,500
(7,023)8,477
12,658
Towers Of Westchester Park, TheHigh RiseJan 2006College Park, MD1972303
15,198
22,029
11,982
15,198
34,011
49,209
(13,952)35,257
24,952
High RiseJan 2006College Park, MD1972303
15,198
22,029
12,536
15,198
34,565
49,763
(15,849)33,914
24,409
Township At HighlandsTown HomeNov 1996Centennial, CO1985161
1,536
9,773
6,618
1,536
16,391
17,927
(10,131)7,796
14,738
Town HomeNov 1996Centennial, CO1985161
1,536
9,773
6,924
1,536
16,697
18,233
(10,655)7,578

TremontMid RiseDec 2014Atlanta, GA200978
5,274
18,550
530
5,274
19,080
24,354
(663)23,691

Mid RiseDec 2014Atlanta, GA200978
5,274
18,011
2,083
5,274
20,094
25,368
(1,432)23,936

Twin Lake TowersHigh RiseOct 1999Westmont, IL1969399
3,268
18,763
37,876
3,268
56,639
59,907
(41,472)18,435
31,110
High RiseOct 1999Westmont, IL1969399
3,268
18,763
38,918
3,268
57,681
60,949
(43,261)17,688
30,497
Vantage PointeMid RiseAug 2002Swampscott, MA198796
4,748
10,089
1,652
4,748
11,741
16,489
(4,312)12,177
4,561
Mid RiseAug 2002Swampscott, MA198796
4,748
10,089
1,551
4,748
11,640
16,388
(4,507)11,881
3,990
Views at Vinings Mountain, TheGardenJan 2006Atlanta, GA1983180
610
5,026
12,011
610
17,037
17,647
(15,466)2,181

Villa Del SolGardenMar 2002Norwalk, CA1972120
7,476
4,861
2,284
7,476
7,145
14,621
(4,044)10,577
11,237
GardenMar 2002Norwalk, CA1972120
7,476
4,861
2,994
7,476
7,855
15,331
(4,194)11,137
11,031
Village of PennbrookGardenOct 1998Levittown, PA1969722
10,240
38,222
11,293
10,240
49,515
59,755
(29,580)30,175
44,021
Villas at Park La Brea, TheGardenMar 2002Los Angeles, CA2002250
8,630
48,871
6,950
8,630
55,821
64,451
(25,367)39,084
19,248
GardenMar 2002Los Angeles, CA2002250
8,630
48,871
6,772
8,630
55,643
64,273
(26,338)37,935
16,934
Villas of PasadenaMid RiseJan 2006Pasadena, CA197392
9,693
6,818
1,978
9,693
8,796
18,489
(3,329)15,160
9,689
Mid RiseJan 2006Pasadena, CA197392
9,693
6,818
3,433
9,693
10,251
19,944
(3,770)16,174
9,500
VivoHigh RiseJun 2015Cambridge, MA201591
6,450
35,974
1,332
6,450
37,306
43,756
(480)43,276

High RiseJun 2015Cambridge, MA201591
6,450
35,974
3,758
6,450
39,732
46,182
(3,055)43,127
21,307
Waterford VillageGardenAug 2002Bridgewater, MA1971588
29,110
28,101
3,161
29,110
31,262
60,372
(22,639)37,733
37,394
GardenAug 2002Bridgewater, MA1971588
29,110
28,101
3,379
29,110
31,480
60,590
(22,898)37,692
36,731
Waterways VillageGardenJun 1997Aventura, FL1994180
4,504
11,064
6,180
4,504
17,244
21,748
(9,092)12,656

GardenJun 1997Aventura, FL1994180
4,504
11,064
9,287
4,504
20,351
24,855
(9,627)15,228
13,705
Waverly ApartmentsGardenAug 2008Brighton, MA1970103
7,920
11,347
2,289
7,920
13,636
21,556
(4,422)17,134
12,241
GardenAug 2008Brighton, MA1970103
7,920
11,347
3,801
7,920
15,148
23,068
(5,121)17,947
12,012
Wexford VillageGardenAug 2002Worcester, MA1974264
6,349
17,939
1,725
6,349
19,664
26,013
(10,694)15,319
9,290
GardenAug 2002Worcester, MA1974264
6,349
17,939
2,052
6,349
19,991
26,340
(11,554)14,786
8,339
Willow BendGardenMay 1998Rolling Meadows, IL1969328
2,717
15,437
26,474
2,717
41,911
44,628
(29,319)15,309
18,037
GardenMay 1998Rolling Meadows, IL1969328
2,717
15,437
24,761
2,717
40,198
42,915
(27,901)15,014
17,668
WindriftGardenMar 2001Oceanside, CA1987404
24,960
17,590
19,074
24,960
36,664
61,624
(25,511)36,113
41,084
GardenMar 2001Oceanside, CA1987404
24,960
17,590
18,132
24,960
35,722
60,682
(21,560)39,122
40,270
Windsor ParkGardenMar 2001Woodbridge, VA1987220
4,279
15,970
5,503
4,279
21,473
25,752
(10,732)15,020
17,992
GardenMar 2001Woodbridge, VA1987220
4,279
15,970
5,859
4,279
21,829
26,108
(11,668)14,440
17,676
Woods Of WilliamsburgGardenJan 2006Williamsburg, VA1976125
798
3,657
1,103
798
4,760
5,558
(3,930)1,628

GardenJan 2006Williamsburg, VA1976125
798
3,657
1,109
798
4,766
5,564
(3,974)1,590

Yacht Club at BrickellHigh RiseDec 2003Miami, FL1998357
31,362
32,214
9,809
31,362
42,023
73,385
(13,309)60,076
47,304
High RiseDec 2003Miami, FL1998357
31,362
32,214
11,405
31,362
43,619
74,981
(14,449)60,532
46,330
Yorktown ApartmentsHigh RiseDec 1999Lombard, IL1971364
3,055
18,162
33,837
3,055
51,999
55,054
(23,181)31,873
30,328
High RiseDec 1999Lombard, IL1971364
3,055
18,162
42,748
3,055
60,910
63,965
(22,524)41,441
29,686
Total Conventional Apartment CommunitiesTotal Conventional Apartment Communities 40,226
1,834,423
3,104,080
2,606,954
1,744,952
5,711,030
7,455,982
(2,371,248)5,084,734
3,515,121
Total Conventional Apartment Communities 37,780
1,832,184
3,248,631
2,648,691
1,742,709
5,897,322
7,640,031
(2,295,387)5,344,644
3,574,411
  
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
Affordable Apartment Communities:Affordable Apartment Communities:   
All HallowsGardenJan 2006San Francisco, CA1976157
1,338
29,770
21,406
1,338
51,176
52,514
(31,279)21,235
21,839
Arvada HouseHigh RiseNov 2004Arvada, CO197788
405
3,314
2,415
405
5,729
6,134
(2,899)3,235
3,859
BayviewGardenJun 2005San Francisco, CA1976146
582
15,265
18,327
582
33,592
34,174
(22,292)11,882
11,291
Beacon HillHigh RiseMar 2002Hillsdale, MI1980198
1,094
7,044
6,148
1,094
13,192
14,286
(6,925)7,361
6,648

F-48


  (2)(3)    (2) 
 (1)   Initial Cost Cost CapitalizedDecember 31, 2015 (1)   Initial Cost Cost CapitalizedDecember 31, 2016
ApartmentDate  Year Apartment  Buildings and Subsequent to  Buildings and(4) Accumulated Total Cost ApartmentDate  Year Apartment  Buildings and Subsequent to  Buildings and(3) Accumulated Total Cost 
Apartment Community NameTypeConsolidatedLocation Built Homes Land Improvements Consolidation Land Improvements Total Depreciation (AD)  Net of AD EncumbrancesTypeConsolidatedLocation Built Homes Land Improvements Consolidation Land Improvements Total Depreciation (AD)  Net of AD Encumbrances
      
Affordable Apartment Communities:   
All HallowsGardenJan 2006San Francisco, CA1976157
1,338
29,770
21,196
1,338
50,966
52,304
(29,359)22,945
22,334
Arvada HouseHigh RiseNov 2004Arvada, CO197788
405
3,314
2,289
405
5,603
6,008
(2,602)3,406
3,909
BayviewGardenJun 2005San Francisco, CA1976146
582
15,265
17,888
582
33,153
33,735
(20,987)12,748
11,604
Beacon HillHigh RiseMar 2002Hillsdale, MI1980198
1,094
7,044
6,171
1,094
13,215
14,309
(6,359)7,950
6,774
Biltmore TowersHigh RiseMar 2002Dayton, OH1980230
1,814
6,411
13,114
1,814
19,525
21,339
(12,498)8,841
10,257
High RiseMar 2002Dayton, OH1980230
1,814
6,411
13,459
1,814
19,870
21,684
(13,254)8,430
9,981
Butternut CreekMid RiseJan 2006Charlotte, MI1980100
505
3,617
3,975
505
7,592
8,097
(5,851)2,246
4,047
Mid RiseJan 2006Charlotte, MI1980100
505
3,617
4,028
505
7,645
8,150
(6,134)2,016
4,044
Carriage HouseMid RiseDec 2006Petersburg, VA1885118
716
2,886
4,233
716
7,119
7,835
(3,923)3,912
1,833
Mid RiseDec 2006Petersburg, VA1885118
716
2,886
4,298
716
7,184
7,900
(4,263)3,637
1,801
City LineGardenMar 2002Newport News, VA1976200
500
2,014
7,712
500
9,726
10,226
(4,582)5,644
4,324
GardenMar 2002Newport News, VA1976200
500
2,014
8,150
500
10,164
10,664
(5,369)5,295
4,214
Copperwood I ApartmentsGardenApr 2006The Woodlands, TX1980150
383
8,373
5,901
383
8,117
8,500
(6,142)2,358
5,156
GardenApr 2006The Woodlands, TX1980150
383
8,373
5,969
383
14,342
14,725
(12,522)2,203
5,066
Copperwood II ApartmentsGardenOct 2005The Woodlands, TX1981150
459
5,553
3,647
459
9,200
9,659
(5,442)4,217
5,320
GardenOct 2005The Woodlands, TX1981150
459
5,553
3,745
459
9,298
9,757
(5,780)3,977
5,227
Country Club HeightsGardenMar 2004Quincy, IL1976200
676
5,715
5,113
676
10,828
11,504
(6,097)5,407
5,472
GardenMar 2004Quincy, IL1976200
676
5,715
5,178
676
10,893
11,569
(6,518)5,051
5,365
Crevenna OaksTown HomeJan 2006Burke, VA197950

5,203
437

5,640
5,640
(3,181)2,459
2,492
Town HomeJan 2006Burke, VA197950

5,203
486

5,689
5,689
(3,422)2,267
2,320
Fountain PlaceMid RiseJan 2006Connersville, IN1980102
378
2,091
3,205
378
5,296
5,674
(2,046)3,628
918
Mid RiseJan 2006Connersville, IN1980102
378
2,091
3,238
378
5,329
5,707
(2,386)3,321
869
Hopkins VillageMid RiseSep 2003Baltimore, MD1979165
549
5,973
3,821
549
9,794
10,343
(4,406)5,937
9,100
Mid RiseSep 2003Baltimore, MD1979165
549
5,973
3,896
549
9,869
10,418
(4,897)5,521
9,100
Ingram SquareGardenJan 2006San Antonio, TX1980120
800
3,136
5,899
800
9,035
9,835
(5,559)4,276
3,251
GardenJan 2006San Antonio, TX1980120
800
3,136
5,961
800
9,097
9,897
(6,009)3,888
3,120
Kirkwood HouseHigh RiseSep 2004Baltimore, MD1979261
1,337
9,358
9,053
1,337
18,411
19,748
(8,568)11,180
16,000
High RiseSep 2004Baltimore, MD1979261
1,337
9,358
9,161
1,337
18,519
19,856
(9,502)10,354
16,000
La SalleGardenOct 2000San Francisco, CA1976145
1,866
19,567
17,969
1,866
37,536
39,402
(25,603)13,799
17,522
GardenOct 2000San Francisco, CA1976145
1,866
19,567
18,188
1,866
37,755
39,621
(27,002)12,619
17,293
La VistaGardenJan 2006Concord, CA198175
581
4,449
4,668
581
9,117
9,698
(3,772)5,926
4,950
GardenJan 2006Concord, CA198175
581
4,449
4,694
581
9,143
9,724
(4,271)5,453
4,839
Loring TowersHigh RiseOct 2002Minneapolis, MN1975230
886
7,445
8,220
886
15,665
16,551
(7,613)8,938
9,578
High RiseOct 2002Minneapolis, MN1975230
886
7,445
8,508
886
15,953
16,839
(8,418)8,421
9,407
Loring Towers ApartmentsHigh RiseSep 2003Salem, MA1973250
187
14,050
7,940
187
21,990
22,177
(10,106)12,071
9,978
High RiseSep 2003Salem, MA1973250
187
14,050
8,162
187
22,212
22,399
(11,245)11,154
9,725
New BaltimoreMid RiseMar 2002New Baltimore, MI1980101
896
2,360
5,311
896
7,671
8,567
(4,208)4,359
1,982
Mid RiseMar 2002New Baltimore, MI1980101
896
2,360
5,419
896
7,779
8,675
(4,685)3,990
1,936
NorthpointGardenJan 2000Chicago, IL1921304
2,510
14,334
15,511
2,510
29,845
32,355
(21,599)10,756
17,580
GardenJan 2000Chicago, IL1921304
2,510
14,334
15,960
2,510
30,294
32,804
(22,496)10,308
17,382
Panorama ParkGardenMar 2002Bakersfield, CA198266
521
5,520
1,210
521
6,730
7,251
(3,547)3,704
1,790
GardenMar 2002Bakersfield, CA198266
521
5,520
1,245
521
6,765
7,286
(3,904)3,382
1,678
Park PlaceMid RiseJun 2005St Louis, MO1977242
705
6,327
8,260
705
14,587
15,292
(10,771)4,521
8,524
Mid RiseJun 2005St Louis, MO1977242
705
6,327
8,333
705
14,660
15,365
(11,235)4,130
8,301
Parkways, TheGardenJun 2004Chicago, IL1925446
3,426
23,257
20,768
3,426
44,025
47,451
(25,348)22,103
16,953
GardenJun 2004Chicago, IL1925446
3,426
23,257
21,981
3,426
45,238
48,664
(27,276)21,388
15,951
PavilionHigh RiseMar 2004Philadelphia, PA1976296

15,415
2,308

17,723
17,723
(9,034)8,689
6,585
Pleasant HillsGardenApr 2005Austin, TX1982100
1,229
2,631
3,859
1,229
6,490
7,719
(3,763)3,956
2,951
GardenApr 2005Austin, TX1982100
1,229
2,631
4,112
1,229
6,743
7,972
(4,194)3,778
2,899
Plummer VillageMid RiseMar 2002North Hills, CA198375
666
2,647
1,313
666
3,960
4,626
(2,634)1,992
2,336
Mid RiseMar 2002North Hills, CA198375
666
2,647
1,349
666
3,996
4,662
(2,863)1,799
2,282
RiverwoodsHigh RiseJan 2006Kankakee, IL1983125
598
4,931
3,628
598
8,559
9,157
(3,642)5,515
3,493
High RiseJan 2006Kankakee, IL1983125
598
4,931
3,675
598
8,606
9,204
(4,041)5,163
3,453
Round Barn ManorGardenMar 2002Champaign, IL1979156
810
5,134
6,130
810
11,264
12,074
(4,111)7,963
4,210
GardenMar 2002Champaign, IL1979156
810
5,134
6,171
810
11,305
12,115
(4,736)7,379
3,999
San Jose ApartmentsGardenSep 2005San Antonio, TX1970220
234
5,770
12,398
234
18,168
18,402
(9,917)8,485
4,358
GardenSep 2005San Antonio, TX1970220
234
5,770
12,782
234
18,552
18,786
(10,962)7,824
4,259
San Juan Del CentroMid RiseSep 2005Boulder, CO1971150
439
7,110
13,147
439
20,257
20,696
(10,729)9,967
11,707
Mid RiseSep 2005Boulder, CO1971150
439
7,110
13,218
439
20,328
20,767
(11,721)9,046
11,553
ShoreviewGardenOct 1999San Francisco, CA1976156
1,476
19,071
19,803
1,476
38,874
40,350
(27,030)13,320
18,957
GardenOct 1999San Francisco, CA1976156
1,476
19,071
20,034
1,476
39,105
40,581
(28,570)12,011
18,716
South Bay VillaGardenMar 2002Los Angeles, CA198180
1,352
2,770
3,556
1,352
6,326
7,678
(5,205)2,473
2,752
GardenMar 2002Los Angeles, CA198180
1,352
2,770
3,759
1,352
6,529
7,881
(5,456)2,425
2,689
St. George VillasGardenJan 2006St. George, SC198440
107
1,025
382
107
1,407
1,514
(1,140)374
378
GardenJan 2006St. George, SC198440
107
1,025
393
107
1,418
1,525
(1,178)347
357
Stonegate AptsMid RiseJul 2009Indianapolis, IN192052
122
1,920
764
122
2,684
2,806
(1,478)1,328
1,799
Summit OaksTown HomeJan 2006Burke, VA198050

5,311
444

5,755
5,755
(3,070)2,685
2,478
Town HomeJan 2006Burke, VA198050

5,311
506

5,817
5,817
(3,308)2,509
2,302
Tamarac Pines Apartments IGardenNov 2004Woodlands, TX1980144
363
2,775
3,366
363
6,141
6,504
(3,396)3,108
3,692
GardenNov 2004Woodlands, TX1980144
363
2,775
3,643
363
6,418
6,781
(3,872)2,909
3,591
Tamarac Pines Apartments IIGardenNov 2004Woodlands, TX1980156
266
3,195
4,020
266
7,215
7,481
(3,918)3,563
4,000
GardenNov 2004Woodlands, TX1980156
266
3,195
4,145
266
7,340
7,606
(4,397)3,209
3,890
Terry ManorMid RiseOct 2005Los Angeles, CA1977170
1,997
5,848
5,265
1,997
11,113
13,110
(8,419)4,691
6,254
Mid RiseOct 2005Los Angeles, CA1977170
1,997
5,848
5,361
1,997
11,209
13,206
(8,893)4,313
6,111
Tompkins TerraceGardenOct 2002Beacon, NY1974193
872
6,827
14,306
872
21,133
22,005
(10,200)11,805
6,613
GardenOct 2002Beacon, NY1974193
872
6,827
14,478
872
21,305
22,177
(11,354)10,823
6,470
University SquareHigh RiseMar 2005Philadelphia, PA1978442
702
12,201
13,014
702
25,215
25,917
(8,788)17,129

High RiseMar 2005Philadelphia, PA1978442
702
12,201
13,049
702
25,250
25,952
(9,785)16,167

Van Nuys ApartmentsHigh RiseMar 2002Los Angeles, CA1981299
3,576
21,226
23,543
3,576
44,769
48,345
(18,832)29,513
24,151
High RiseMar 2002Los Angeles, CA1981299
3,576
21,226
23,576
3,576
44,802
48,378
(21,151)27,227
23,851
Wah Luck HouseHigh RiseJan 2006Washington, DC1982153

7,772
661

8,433
8,433
(2,922)5,511
5,457
High RiseJan 2006Washington, DC1982153

7,772
472

8,244
8,244
(2,976)5,268
4,715
Walnut HillsHigh RiseJan 2006Cincinnati, OH1983198
826
5,608
5,635
820
11,249
12,069
(5,613)6,456
5,117
High RiseJan 2006Cincinnati, OH1983198
820
5,608
5,720
820
11,328
12,148
(6,186)5,962
5,048
Washington Square WestMid RiseSep 2004Philadelphia, PA1982132
582
11,169
5,273
582
16,442
17,024
(11,093)5,931
3,474
Mid RiseSep 2004Philadelphia, PA1982132
582
11,169
5,448
582
16,617
17,199
(11,617)5,582
3,389
Whitefield PlaceGardenApr 2005San Antonio, TX198080
219
3,151
2,128
219
5,279
5,498
(2,989)2,509
2,028
GardenApr 2005San Antonio, TX198080
219
3,151
2,336
219
5,487
5,706
(3,344)2,362
1,981
Winter GardensHigh RiseMar 2004St Louis, MO1920112
300
3,072
4,773
300
7,845
8,145
(2,946)5,199
3,237
Woodland HillsGardenOct 2005Jackson, MI1980125
320
3,875
4,113
327
7,989
8,316
(4,955)3,361
3,188
Total Affordable Apartment CommunitiesTotal Affordable Apartment Communities 7,650
40,042
356,151
361,468
40,049
717,620
757,669
(432,488)325,181
315,236
Other (5) 
76,034
10,474
1,958
76,034
12,432
88,466
(2,883)85,583

Total 45,430
$1,948,260
$3,615,256
$3,012,117
$1,858,792
$6,627,374
$8,486,166
$(2,730,758)$5,755,408
$3,889,647
   
   

F-49


      (2)(3)      
  (1)    Initial Cost Cost CapitalizedDecember 31, 2015
 ApartmentDate  Year Apartment  Buildings and Subsequent to  Buildings and(4) Accumulated Total Cost 
Apartment Community NameTypeConsolidatedLocation Built Homes Land Improvements Consolidation Land Improvements Total Depreciation (AD)  Net of AD Encumbrances
               
Winter GardensHigh RiseMar 2004St Louis, MO1920112
300
3,072
4,706
300
7,778
8,078
(2,654)5,424
3,336
Woodland HillsGardenOct 2005Jackson, MI1980125
320
3,875
3,950
327
7,818
8,145
(4,662)3,483
3,265
Total Affordable Apartment Communities   7,998
40,170
373,486
357,110
40,171
724,438
764,609
(405,408)359,201
331,039
Other (6)    
76,034
10,474
384
76,034
10,858
86,892
(1,366)85,526

Total    48,224
$1,950,627
$3,488,040
$2,964,448
$1,861,157
$6,446,326
$8,307,483
$(2,778,022)$5,529,461
$3,846,160
               
(1) Date we acquired the apartment community or first consolidated the partnership which owns the apartment community.
(2) For 2008 and prior periods, costs to acquire the noncontrolling interest’s share of our consolidated real estate partnerships were capitalized as part of the initial cost.
(3) Costs capitalized subsequent to consolidation includes costs capitalized since acquisition or first consolidation of the partnership/apartment community.
(4) The aggregate cost of land and depreciable property for Federal income tax purposes was approximately $3.8 billion at December 31, 2015.
(5) The current carrying value of the apartment community reflects an impairment loss recognized during prior periods.
(6) Other includes land parcels and certain non-residential properties held for future development.
      
 
 
 
 
 
 
 
 
 
      
 
 
 
 
 
 
 
 
 
(2)
(1) Initial Cost Cost CapitalizedDecember 31, 2016
ApartmentDate Year Apartment Buildings and Subsequent to Buildings and(3) Accumulated Total Cost
Apartment Community NameTypeConsolidatedLocation Built Homes Land Improvements Consolidation Land Improvements Total Depreciation (AD)  Net of AD Encumbrances
(1) Date we acquired the apartment community or first consolidated the partnership which owns the apartment community.
(2) Costs capitalized subsequent to consolidation includes costs capitalized since acquisition or date of initial consolidation of the partnership/apartment community.
(3) The aggregate cost of land and depreciable property for federal income tax purposes was approximately $3.7 billion at December 31, 2016.
(4) The current carrying value of the apartment community reflects an impairment loss recognized during prior periods.
(5) Other includes land parcels and certain non-residential properties held for future development.





















F-50


APARTMENT INVESTMENT AND MANAGEMENT COMPANY
AIMCO PROPERTIES, L.P.
SCHEDULE III: REAL ESTATE AND ACCUMULATED DEPRECIATION
For the Years Ended December 31, 2016, 2015, 2014 and 20132014
(In Thousands)

2015 2014 20132016 2015 2014
Real Estate
Balance at beginning of year
$8,144,958
 $8,214,081
 $8,333,419
$8,307,483
 $8,144,958
 $8,214,081
Additions during the year:          
Acquisitions147,077
 379,187
 66,058
333,174
 147,077
 379,187
Capital additions362,948
 367,454
 376,038
338,606
 362,948
 367,454
Casualty and other write-offs (1)(79,561) (111,068) (98,489)(166,703) (79,561) (111,068)
Amounts related to assets held for sale(7,036) (38,744) 
(2,801) (7,036) (38,744)
Sales(260,903) (665,952) (462,945)(323,593) (260,903) (665,952)
Balance at end of year$8,307,483
 $8,144,958
 $8,214,081
$8,486,166
 $8,307,483
 $8,144,958
Accumulated Depreciation
Balance at beginning of year
$2,672,179
 $2,822,872
 $2,820,765
$2,778,022
 $2,672,179
 $2,822,872
Additions during the year:          
Depreciation285,514
 265,060
 288,666
312,365
 285,514
 265,060
Deductions during the year:          
Casualty and other write-offs (1)(78,838) (106,802) (92,775)(163,009) (78,838) (106,802)
Amounts related to assets held for sale(4,427) (12,304) 
(1,525) (4,427) (12,304)
Sales(96,406) (296,647) (193,784)(195,095) (96,406) (296,647)
Balance at end of year$2,778,022
 $2,672,179
 $2,822,872
$2,730,758
 $2,778,022
 $2,672,179
(1)
Includes the write-off of fully depreciated assets totaling $76.9$161.6 million, $106.3$76.9 million and $91.9$106.3 million, during the years ended December 31, 2016, 2015 2014 and 2013,2014, respectively.


F-51F-48