**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-OxleyAct 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 theCompany for the period ended September 30, 2004 (the “Report”)fully complies with the requirements of Section 13(a) or Section15(d), as applicable, of the Securities Exchange Act of 1934, asamended; and (ii) the information contained in the Report fairlypresents, in all material respects, the financial condition andresults of operations of the Company.     Date: November 5, 2004 By: /s/ Richard S. Ziman      Richard S. Ziman   Chairman of the Board and   Chief Executive Officer   Arden Realty, Inc.
A signed original of this written statement required by Section 906 has beenprovided to the Company and will be retained by the Company and furnished tothe Securities and Exchange Commission or its staff upon request.
The foregoing certification is being furnished solely to accompany the Reportpursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18of the Securities Exchange Act of 1934, as amended, and is not to beincorporated by reference into any filing of the Company, whether made beforeor after the date hereof, regardless of any general incorporation language insuch filing.
 

 

**Certification of Chief Financial Officer**
Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-OxleyAct 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 theCompany for the period ended September 30, 2004 (the “Report”)fully complies with the requirements of Section 13(a) or Section15(d), as applicable, of the Securities Exchange Act of 1934, asamended; and (ii) the information contained in the Report fairlypresents, in all material respects, the financial condition andresults of operations of the Company.     Date: November 5, 2004 By: /s/ Richard S. Davis      Richard S. Davis   Senior Vice President and   Chief Financial Officer   Arden Realty, Inc.
A signed original of this written statement required by Section 906 has beenprovided to the Company and will be retained by the Company and furnished tothe Securities and Exchange Commission or its staff upon request.
The foregoing certification is being furnished solely to accompany the Reportpursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18of the Securities Exchange Act of 1934, as amended, and is not to beincorporated by reference into any filing of the Company, whether made beforeor after the date hereof, regardless of any general incorporation language insuch filing.
 

 

**Certification of Chief Operating Officer**
Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-OxleyAct 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 theCompany for the period ended September 30, 2004 (the “Report”)fully complies with the requirements of Section 13(a) or Section15(d), as applicable, of the Securities Exchange Act of 1934, asamended; and (ii) the information contained in the Report fairlypresents, in all material respects, the financial condition andresults of operations of the Company.     Date: November 5, 2004 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 beenprovided to the Company and will be retained by the Company and furnished tothe Securities and Exchange Commission or its staff upon request.
The foregoing certification is being furnished solely to accompany the Reportpursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18of the Securities Exchange Act of 1934, as amended, and is not to beincorporated by reference into any filing of the Company, whether made beforeor after the date hereof, regardless of any general incorporation language insuch filing.
 

 

**Certification of Executive Vice President**
Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-OxleyAct 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 theCompany for the period ended September 30, 2004 (the “Report”)fully complies with the requirements of Section 13(a) or Section15(d), as applicable, of the Securities Exchange Act of 1934, asamended; and (ii) the information contained in the Report fairlypresents, in all material respects, the financial condition andresults of operations of the Company.     Date: November 5, 2004 By: /s/ Andrew J. Sobel      Andrew J. Sobel   Executive Vice President,   Strategic Planning and Operations   Arden Realty, Inc.
A signed original of this written statement required by Section 906 has beenprovided to the Company and will be retained by the Company and furnished tothe Securities and Exchange Commission or its staff upon request.
The foregoing certification is being furnished solely to accompany the Reportpursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18of the Securities Exchange Act of 1934, as amended, and is not to beincorporated by reference into any filing of the Company, whether made beforeor after the date hereof, regardless of any general incorporation language insuch filing.
 

 

**Certification of Senior Vice President**
Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-OxleyAct 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 theCompany for the period ended September 30, 2004 (the “Report”)fully complies with the requirements of Section 13(a) or Section15(d), as applicable, of the Securities Exchange Act of 1934, asamended; and (ii) the information contained in the Report fairlypresents, in all material respects, the financial condition andresults of operations of the Company.     Date: November 5, 2004 By: /s/ Robert C. Peddicord      Robert C. Peddicord   Senior Vice President,   Leasing and Property Operations   Arden Realty, Inc.
A signed original of this written statement required by Section 906 has beenprovided to the Company and will be retained by the Company and furnished tothe Securities and Exchange Commission or its staff upon request.
The foregoing certification is being furnished solely to accompany the Reportpursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18of the Securities Exchange Act of 1934, as amended, and is not to beincorporated by reference into any filing of the Company, whether made beforeor after the date hereof, regardless of any general incorporation language insuch filing.
 

 

**Certification of General Counsel**
Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-OxleyAct 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 theCompany for the period ended September 30, 2004 (the “Report”)fully complies with the requirements of Section 13(a) or Section15(d), as applicable, of the Securities Exchange Act of 1934, asamended; and (ii) the information contained in the Report fairlypresents, in all material respects, the financial condition andresults of operations of the Company.     Date: November 5, 2004 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 beenprovided to the Company and will be retained by the Company and furnished tothe Securities and Exchange Commission or its staff upon request.
The foregoing certification is being furnished solely to accompany the Reportpursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18of the Securities Exchange Act of 1934, as amended, and is not to beincorporated by reference into any filing of the Company, whether made beforeor after the date hereof, regardless of any general incorporation language insuch filing.