The following is an abbreviated version of the apartment owners portion of the 2010 NMHC 50, an annual ranking of the 50 largest U.S. apartment owners and managers published in NREI's April issue. The companies below are ranked according to the number of apartment units in which they had an ownership interest as of Jan. 1, 2010.

  1. Boston Capital
    Boston, MA
    Apartments with Ownership
    Interest:
    162,677

  2. SunAmerica Affordable Housing Partners
    Los Angeles, CA
    Apartments with Ownership
    Interest:
    147,087

  3. Equity Residential
    Chicago, IL
    Apartments with Ownership
    Interest:
    136,843

  4. AIMCO
    Denver, CO
    Apartments with Ownership
    Interest:
    133,200

  5. PNC Tax Credit Capital
    Portland, OR
    Apartments with Ownership
    Interest:
    128,727

  6. National Equity Fund
    Chicago, IL
    Apartments with Ownership
    Interest:
    101,226

  7. Enterprise Community Investment
    Columbia, MD
    Apartments with Ownership
    Interest:
    96,395

  8. The Richman Group Affordable Housing Corp.
    Greenwich, CT
    Apartments with Ownership
    Interest:
    90,346

  9. Archstone
    Englewood, CO
    Apartments with Ownership
    Interest:
    83,085

  10. Pinnacle
    Seattle, WA
    Apartments with Ownership
    Interest:
    68,017

  11. Camden Property Trust
    Houston, TX

    Apartments with Ownership
    Interest:
    63,286

  12. Alliant Capital
    Woodland Hills, CA
    Apartments with Ownership
    Interest:
    60,258

  13. Edward Rose & Sons
    Farmington Hills, MI
    Apartments with Ownership
    Interest:
    55,925

  14. BlackRock Realty
    San Francisco, CA
    Apartments with Ownership
    Interest:
    55,144

  15. UDR
    Highlands Ranch, CO
    Apartments with Ownership
    Interest:
    51,509

  16. Fairfield Residential
    San Diego, CA
    Apartments with Ownership
    Interest:
    51,196

  17. WNC & Associates
    Irvine, CA
    Apartments with Ownership
    Interest:
    50,332

  18. AvalonBay Communities
    Alexandria, VA

    Apartments with Ownership
    Interest:
    48,924

  19. Forest City Residential Group
    Cleveland, OH
    Apartments with Ownership
    Interest:
    47,633

  20. Invesco Real Estate
    Dallas, TX
    Apartments with Ownership
    Interest:
    47,340

  21. Lincoln Property Co.
    Dallas, TX
    Apartments with Ownership
    Interest:
    46,347

  22. Michaels Development Co.
    Marlton, NJ
    Apartments with Ownership
    Interest:
    44,916

  23. Raymond James Tax Credit Funds, Inc.
    St. Petersburg, FL
    Apartments with Ownership
    Interest:
    43,945

  24. Mid-America Apartment Communities
    Memphis, TN
    Apartments with Ownership
    Interest:
    43,604

  25. Bell Partners, Inc.
    Greensboro, NC
    Apartments with Ownership
    Interest:
    43,160