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EXHIBIT 32.1 OFFICERS CERTIFICATIONS Certification of Chief Executive 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, 2004 (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 7, 2004
    
    By:
    
    /s/ Richard S. ZimanRichard S. ZimanChairman of the Board and
Chief Executive 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 Chief Financial 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, 2004 (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 7, 2004
    
    By:
    
    /s/ Richard S. DavisRichard S. DavisSenior Vice President and
Chief Financial 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 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, 2004 (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 7, 2004
    
    By:
    
    /s/ Victor J. ColemanVictor J. ColemanPresident 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, 2004 (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 7, 2004
    
    By:
    
    /s/ Andrew J. SobelAndrew J. SobelExecutive Vice President,
Strategic Planning and 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 Senior 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, 2004 (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 7, 2004
    
    By:
    
    /s/ Robert C. PeddicordRobert C. PeddicordSenior 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, 2004 (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 7, 2004
    
    By:
    
    /s/ David A. SwartzDavid A. SwartzGeneral 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.