**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 Limited Partnership. (the“Partnership”), hereby certifies, to such officer’s knowledge, that:
(i) the accompanying quarterly report on Form 10-Q of thePartnership for the period ended March 31, 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 Partnership.     Date: May 7, 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 Partnership and will be retained by the Partnership andfurnished to the 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 Partnership, whether madebefore or after the date hereof, regardless of any general incorporationlanguage in such 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 Limited Partnership. (the“Partnership”), hereby certifies, to such officer’s knowledge, that:
(i) the accompanying quarterly report on Form 10-Q of thePartnership for the period ended March 31, 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 Partnership.     Date: May 7, 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 Partnership and will be retained by the Partnership andfurnished to the 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 Partnership, whether madebefore or after the date hereof, regardless of any general incorporationlanguage in such 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 Limited Partnership. (the“Partnership”), hereby certifies, to such officer’s knowledge, that:
(i) the accompanying quarterly report on Form 10-Q of thePartnership for the period ended March 31, 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 Partnership.     Date: May 7, 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 Partnership and will be retained by the Partnership andfurnished to the 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 Partnership, whether madebefore or after the date hereof, regardless of any general incorporationlanguage in such 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 Limited Partnership. (the“Partnership”), hereby certifies, to such officer’s knowledge, that:
(i) the accompanying quarterly report on Form 10-Q of thePartnership for the period ended March 31, 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 Partnership.     Date: May 7, 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 Partnership and will be retained by the Partnership andfurnished to the 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 Partnership, whether madebefore or after the date hereof, regardless of any general incorporationlanguage in such 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 Limited Partnership. (the“Partnership”), hereby certifies, to such officer’s knowledge, that:
(i) the accompanying quarterly report on Form 10-Q of thePartnership for the period ended March 31, 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 Partnership.     Date:May 7, 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 Partnership and will be retained by the Partnership andfurnished to the 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 Partnership, whether madebefore or after the date hereof, regardless of any general incorporationlanguage in such 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 Limited Partnership. (the“Partnership”), hereby certifies, to such officer’s knowledge, that:
(i) the accompanying quarterly report on Form 10-Q of thePartnership for the period ended March 31, 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 Partnership.     Date:May 7, 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 Partnership and will be retained by the Partnership andfurnished to the 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 Partnership, whether madebefore or after the date hereof, regardless of any general incorporationlanguage in such filing.