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                                                                    EXHIBIT 99.1



                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER
              PURSUANT TO SS.906 OF THE SARBANES-OXLEY ACT OF 2002



The undersigned, the Chief Executive Officer of iStar Financial Inc. (the
"Company"), hereby certifies on the date hereof, pursuant to 18 U.S.C. 1350(a),
as adopted pursuant to ss.906 of The Sarbanes-Oxley Act of 2002, that the
Quarterly Report on Form 10-Q for the quarter ended September 30, 2002 (the
"Form 10-Q"), filed concurrently herewith by the Company, fully complies with
the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of
1934, as amended, and that the information contained in the Form 10-Q fairly
presents, in all material respects, the financial condition and results of
operations of the Company.


By:    /s/  JAY SUGARMAN
       ------------------------------
       Name:  Jay Sugarman
       Title: Chief Executive Officer





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                    CERTIFICATION OF CHIEF FINANCIAL OFFICER
              PURSUANT TO SS.906 OF THE SARBANES-OXLEY ACT OF 2002



The undersigned, the Chief Financial Officer of iStar Financial Inc. (the
"Company"), hereby certifies on the date hereof, pursuant to 18 U.S.C. 1350(a),
as adopted pursuant to ss.906 of The Sarbanes-Oxley Act of 2002, that the
Quarterly Report on Form 10-Q for the quarter ended September 30, 2002 (the
"Form 10-Q"), filed concurrently herewith by the Company, fully complies with
the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of
1934, as amended, and that the information contained in the Form 10-Q fairly
presents, in all material respects, the financial condition and results of
operations of the Company.





By:    /s/ SPENCER B. HABER
       ------------------------------
       Name:  Spencer B. Haber
       Title: Chief Financial Officer