EXHIBIT 32.1
                           SECTION 1350 CERTIFICATION
                           OF CHIEF EXECUTIVE OFFICER

In connection with the quarterly report of Flagstar Bancorp, Inc. (the
"Company") on Form 10-Q for the period ended September 30, 2003 as filed with
the Securities and Exchange Commission on the date hereof (the "Report"), I,
Mark T. Hammond, President and Chief Executive Officer of the Company, certify,
to the best of my knowledge, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2003, 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.

Dated:  November 12, 2003                  /s/ Mark T. Hammond
                                           -------------------
                                           Mark T. Hammond
                                           President and Chief Executive Officer