Exhibit 32.1

                              W. P. CAREY & CO. LLC

                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER
                       PURSUANT TO 18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of W. P. Carey & Co. LLC (the "Company")
on Form 10-Q for the period ended June 30, 2005 as filed with the Securities and
Exchange Commission on the date hereof (the "Report"), I, Gordon F. DuGan, Chief
Executive Officer of the Company, certify, to the best of my knowledge and
belief, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906
of the Sarbanes-Oxley Act of 2002, that:

      (1)   The Report fully complies with the requirements of section 13(a) or
            15(d) of the Securities Exchange Act of 1934; and

      (2)   The information contained in the Report fairly presents, in all
            material respects, the financial condition and result of operations
            of the Company.

      /s/ Gordon F. DuGan
      ------------------------
      Gordon F. DuGan
      President and
      Chief Executive Officer

      8/9/2005
      Date

A signed original of this written statement required by Section 906, or other
document authenticating, acknowledging, or otherwise adopting the signature that
appears in typed form within the electronic version 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.