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EXHIBIT 32.2 Certification of Chief Operating Officer Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the
undersigned officer of Arden Realty, Inc. (the Company), hereby certifies, to such officers
knowledge, that:  (i)
    the accompanying quarterly report on Form 10-Q of the Company for the
period ended March 31, 2005 (the Report) fully complies with the requirements of
Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of
1934, as amended; and(ii)
    the information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Company. Date: May 6, 2005
    
    By:
    
    /s/ Victor J. Coleman

Victor J. Coleman
President and
Chief Operating Officer
Arden Realty, Inc.
 A signed original of this written statement required by Section 906 has been provided to the
Company and will be retained by the Company and furnished to the Securities and Exchange Commission
or its staff upon request. The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C.
§ 1350, and is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934,
as amended, and is not to be incorporated by reference into any filing of the Company, whether made
before or after the date hereof, regardless of any general incorporation language in such filing.




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Certification of Executive Vice President Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the
undersigned officer of Arden Realty, Inc. (the Company), hereby certifies, to such officers
knowledge, that:  (i)
    the accompanying quarterly report on Form 10-Q of the Company for the
period ended March 31, 2005 (the Report) fully complies with the requirements of
Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of
1934, as amended; and(ii)
    the information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Company. Date: May 6, 2005
    
    By:
    
    /s/ Robert C. Peddicord

Robert C. Peddicord
Executive Vice President,
Leasing and Property Operations
Arden Realty, Inc.
 A signed original of this written statement required by Section 906 has been provided to the
Company and will be retained by the Company and furnished to the Securities and Exchange Commission
or its staff upon request. The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C.
§ 1350, and is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934,
as amended, and is not to be incorporated by reference into any filing of the Company, whether made
before or after the date hereof, regardless of any general incorporation language in such filing.




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Certification of General Counsel Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the
undersigned officer of Arden Realty, Inc. (the Company), hereby certifies, to such officers
knowledge, that:  (i)
    the accompanying quarterly report on Form 10-Q of the Company for the
period ended March 31, 2005 (the Report) fully complies with the requirements of
Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of
1934, as amended; and(ii)
    the information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Company. Date: May 6, 2005
    
    By:
    
    /s/ David A. Swartz

David A. Swartz
General Counsel and
Secretary
Arden Realty, Inc.
 A signed original of this written statement required by Section 906 has been provided to the
Company and will be retained by the Company and furnished to the Securities and Exchange Commission
or its staff upon request. The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C.
§ 1350, and is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934,
as amended, and is not to be incorporated by reference into any filing of the Company, whether made
before or after the date hereof, regardless of any general incorporation language in such
filing.