The Top 25 Office Owners survey includes office space owned globally as of Dec. 31, 2008. RREEF had the greatest total amount of space at 80.7 million sq. ft. That was 14 million sq. ft. more than No. 2, Hines. Blackstone, which was ranked No. 1 on last year's list with 57.9 million sq. ft., declined to participate in this year's survey.

Expanded list has a total of 46 office owners.Purchase now

1. RREEF Americas

   Total Office Portfolio: 80.7 million sq. ft.

   280 Park Avenue

   Web site: www.rreef.com

2. Hines

   Total Office Portfolio: 66.2 million sq. ft.

   Phone: (713) 621-8000

   Web site: www.hines.com

3. Brookfield Properties Corp.

   Total Office Portfolio: 60.8 million sq. ft.

   Phone: (212) 417-7000

   Web site: www.brookfieldproperties.com

4. CB Richard Ellis Investors

   Total Office Portfolio: 60.1 million sq. ft.

   Phone: (213) 683-4200

   Web site: www.cbreinvestors.com

5. Boston Properties

   Total Office Portfolio: 49.8 million sq. ft.

   Phone: (617) 236-3000

   Web site: www.bostonproperties.com

6. TIAA-CREF

   Total Office Portfolio: 47.1 million sq. ft.

   Phone: (800) 842-2252

   Web site: www.tiaa-cref.org

7. Vornado Realty Trust

   Total Office Portfolio: 44.6 million sq. ft.

   Phone: (212) 894-7000

   Web site: www.vno.com

8. LaSalle Investment Management

   Total Office Portfolio: 40.8 million sq. ft.

   Phone: (312) 782-5800

   Web site: www.lasalle.com

9. Duke Realty Corp.

   Total Office Portfolio: 37 million sq. ft.

   Phone: (317) 808-6000

   Web site: www.dukerealty.com

10. HRPT Properties Trust

    Total Office Portfolio: 36.4 million sq. ft.

    Phone: (617) 332-3990

    Web site: www.hrpreit.com

11. Mack-Cali Realty Corp.

    Total Office Portfolio: 33.1 million sq. ft.

    Phone: (732) 590-1000

    Web site: www.mack-cali.com

12. Behringer Harvard

    Total Office Portfolio: 31 million sq. ft.

    Phone: (214) 655-1600

    Web site: www.behringerharvard.com

13. SL Green Realty Corp.

    Total Office Portfolio: 30.9 million sq. ft.

    Phone: (212) 594-2700

    Web site: www.slgreen.com

14. Brandywine Realty Trust

    Total Office Portfolio: 30.3 million sq. ft.

    Phone: (610) 325-5600

    Web site: www.brandywinerealty.com

15. Highwoods Properties

    Total Office Portfolio: 27 million sq. ft.

    Phone: (919) 431-1521

    Web site: www.highwoods.com

16. Liberty Property Trust

    Total Office Portfolio: 26 million sq. ft.

    Phone: (610) 648-1700

    Web site: www.libertyproperty.com

17. ING Clarion Partners

    Total Office Portfolio: 23.7 million sq. ft.

    Phone: (212) 883-2500

    Web site: www.ingclarion.com

18. Shorenstein Properties

    Total Office Portfolio: 23 million sq. ft.

    Phone: (415) 772-7000

    Web site: www.shorenstein.com

19. KBS Realty Advisors

    Total Office Portfolio: 21.5 million sq. ft.

    Phone: (949) 417-6532

    Web site: www.kbsrealty.com

20. AEW Capital Management

    Total Office Portfolio: 20.8 million sq. ft.

    Phone: (617) 261-9000

    Web site: www.aew.com

21. Wells Real Estate Funds

    Total Office Portfolio: 20.3 million sq. ft.

    Phone: (770) 449-7800

    Web site: www.wellsref.com

22. Maguire Properties

    Total Office Portfolio: 20 million sq. ft.

    Phone: (213) 626-3300

    Web site: www.maguireproperties.com

23. Corporate Office Properties Trust

    Total Office Portfolio: 19.2 million sq. ft.

    Phone: (443) 285-5400

    Web site: www.copt.com

24. The Inland Real Estate Group of Cos.

    Total Office Portfolio: 18.1 million sq. ft.

    Phone: (630) 218-8000

    Web site: www.inlandgroup.com

25. Forest City Enterprises

    Total Office Portfolio: 14.1 million sq. ft.

    Phone: 216/621-6060

    Web site: www.forestcity.net

Expanded list has a total of 46 office owners.Purchase now