The following is an abbreviated version of the apartment management portion of the 2009 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 they managed as of Jan. 1, 2009.

  1. Pinnacle

    Seattle, WA
    Apartments Managed: 185,219

  2. Riverstone Residential, A CAS Partners Co.

    Dallas, TX
    Apartments Managed: 181,928

  3. AIMCO

    Denver, CO
    Apartments Managed: 154,987

  4. Equity Residential

    Chicago, IL
    Apartments Managed: 148,115

  5. Greystar Real Estate Partners

    Houston, TX
    Apartments Managed: 140,000

  6. Lincoln Property Co.

    Dallas, TX
    Apartments Managed: 130,265

  7. Archstone

    Headquarters:
    Englewood, CO
    Apartments Managed: 83,871

  8. WinnCompanies

    Boston, MA
    Apartments Managed: 75,353

  9. Camden Property Trust

    Houston, TX
    Apartments Managed: 62,641

  10. Bell Partners

    Greensboro, NC
    Apartments Managed: 61,663

  11. Fairfield Residential

    San Diego, CA
    Apartments Managed: 60,265

  12. FPI Management

    Folsom, CA
    Apartments Managed: 53,671

  13. Edward Rose & Sons

    Farmington Hills, MI
    Apartments Managed: 52,794

  14. AvalonBay Communities

    Alexandria, VA
    Apartments Managed: 49,730

  15. Alliance Residential Co.

    Phoenix, AZ
    Apartments Managed: 49,600

  16. UDR

    Highlands Ranch, CO
    Apartments Managed: 47,652

  17. Picerne Real Estate Group

    Phoenix, AZ
    Apartments Managed: 44,754

  18. The ConAm Group of Co.s

    San Diego, CA
    Apartments Managed: 43,500

  19. Westdale Real Estate Investment & Management

    Dallas, TX
    Apartments with Management Interest: 42,915

  20. CnC Investments

    Houston, TX
    Apartments Managed: 42,647

  21. Mid-America Apartment Communities

    Memphis, TN
    Apartments Managed: 42,554

  22. The Michaels Development Co.

    Marlton, NJ
    Apartments Managed: 41,120

  23. Capstone Real Estate Services

    Austin, TX
    Apartments Managed: 40,870

  24. Empire American Holdings

    Montvale, NJ
    Apartments Managed: 40,776

  25. Home Properties

    Rochester, NY
    Apartments Managed: 38,280