EXHIBIT 99.1


                CERTIFICATION 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 Annual Report of General Growth Properties, Inc. (the
"Company") on Form 10-K for the year ending December 31, 2002, as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, John
Bucksbaum, in my capacity as Chief Executive Officer of the Company, do hereby
certify, 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 results of
                  operations of the Company.







/s/:  John Bucksbaum
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John Bucksbaum
Chief Executive Officer
March 13, 2003