The Top 25 Office Owners survey includes office space owned globally as of Dec. 31, 2009.

  1. RREEF Americas
    Total Office Portfolio:
    80.7 million sq. ft.
    Phone: 212-454-3900
    Website: www.rreef.com

  2. The Blackstone Group
    Total Office Portfolio:
    68 million sq. ft.
    Phone: (212) 583.5000
    Website: www.blackstone.com

  3. Brookfield Properties Corp.
    Total Office Portfolio:
    61.5 million sq. ft.
    Phone: (212) 417-7000
    Website: www.brookfieldproperties.com

  4. Vornado Realty Trust
    Total Office Portfolio:
    60 million sq. ft.
    Phone: (201) 5871000
    Website: www.vno.com

  5. Hines
    Total Office Portfolio:
    58.8 million sq. ft.
    Phone: (713) 621-8000
    Website: www.hines.com

  6. CB Richard Ellis Investors
    Total Office Portfolio:
    58.3 million sq. ft.
    Phone: (213) 683-4200
    Website: www.cbreinvestors.com

  7. TIAA-CREF
    Total Office Portfolio:
    46.4 million sq. ft.
    Phone: (800) 842-2733
    Website: www.tiaa-cref.org

  8. LaSalle Investment Management
    Total Office Portfolio:
    41.4 million sq. ft.
    Phone: (312) 782-5800
    Website: www.lasalle.com

  9. Duke Realty Corp.
    Total Office Portfolio:
    38.1 million sq. ft.
    Phone: (317) 808-6000
    www.dukerealty.com

  10. Boston Properties
    Total Office Portfolio:
    35.4 million sq. ft.
    Phone: (617) 236-3300
    Website: www.bostonproperties.com

  11. HRPT Properties Trust
    Total Office Portfolio:
    35.3 million sq. ft.
    Phone: (617) 796-8222
    Website: www.hrptreit.com

  12. Mack-Cali Realty Corp.
    Total Office Portfolio:
    32.8 million
    Phone: (732) 590-1000
    Website: www.mack-cali.com

  13. SL Green Realty Corp.
    Total Office Portfolio:
    30 million sq. ft.
    Phone (212) 594-2700
    Website: www.slgreen.com

  14. Behringer Harvard
    Total Office Portfolio:
    29.5 million sq. ft.
    Phone: (214) 655-1600
    Website: www.behringerharvard.com

  15. Liberty Property Trust
    Total Office Portfolio:
    26 million sq. ft.
    Phone: (610) 648-1700
    Website: www.libertyproperty.com

  16. Brandywine Realty Trust
    Total Office Portfolio:
    25.6 million sq. ft.
    Phone: (610) 325.5600
    Website: www.brandywinerealty.com

  17. ING Clarion Partners
    Total Office Portfolio:
    25.4 million sq. ft.
    Phone: (212) 883-2500
    Website: www.ingclarion.com

  18. Shorenstein Properties LLC
    Total Office Portfolio:
    24 million sq. ft.
    Phone: (415) 772-7000
    Website: www.shorenstein.com

  19. Highwoods Properties
    Total Office Portfolio:
    20.4 million sq. ft.
    Phone: (866-449-6637
    Website: www.highwoods.com

  20. Corporate Office Properties Trust
    Total Office Portfolio:
    20.2 million sq. ft.
    Phone: (443) 285-5400
    Website: www.copt.com

  21. Wells REIT II
    Total Office Portfolio:
    19.8 million sq. ft.
    Phone: (770) 449-7800
    Website: http://www.wellsreitii.com

  22. The Inland Real Estate Group of Cos.
    Total Office Portfolio:
    18.7 million sq. ft.
    Phone: (630) 218-8000
    Website: www.inlandgroup.com

  23. KBS Realty Advisors
    Total Office Portfolio:
    17.3 million sq. ft.
    Phone: (949) 417-6500
    Website: www.kbsrealty.com

  24. MPG Office Trust
    Total Office Portfolio:
    17 million sq. ft.
    Phone: (213) 626 3300
    Website: www.mpgofficetrust.com

  25. AEW Capital Management LP
    Total Office Portfolio:
    15.8 million sq. ft.
    Phone: (617) 261-9000
    Website: www.aew.com