[Flagstar Bancorp Letterhead]

February 8, 2006

Mr. Amit Pande
Assistant Chief Accountant
Division of Corporation Finance
Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549
Mail Stop 4561

         Re:      Flagstar Bancorp, Inc.
                  Form 8-K
                  Filed January 31, 2006
                  File No. 001-16577

Dear Mr. Pande:

         We are writing in response to your letter, dated February 2, 2006 (the
"Comment Letter"), regarding the Form 8-K filed by Flagstar Bancorp, Inc. (the
"8-K") on January 31, 2006. Our response to the Comment Letter is set forth
below, preceded by a reproduction of the comment.

COMMENT NO. 1:             Please tell us how you determined that financial
                           statements for each of the interim periods for the
                           fiscal year ended December 31, 3005 were not affected
                           by the error in the computation of state income tax
                           liability and would not require restatement.



RESPONSE NO. 1:            As disclosed in our 8-K filed on January 31, 2006, we
                           identified errors in the computation of our state tax
                           liability. The errors caused our effective state tax
                           rate to be understated for the years indicated as
                           well as for the first three quarters of 2005. We
                           analyzed the effect of the error relating to 2005 on
                           each of the quarters in 2005 and determined that none
                           were misstated by a material amount. The after-tax
                           effect on the first, second and third quarters of
                           2005 would have only reduced earnings by 1.6%, 1.2%
                           and 1.7%, respectively, and would have increased
                           earnings in the fourth quarter by 3.5%.



                           Consequently, we believe that the most appropriate
                           course of action with respect to correcting the 2005
                           state tax amount was to record the entire 2005 effect
                           solely within the fourth quarter. We believe that
                           these differences, both individually and in the
                           aggregate, are clearly within a tolerable range which
                           would make restating any 2005 quarter unnecessary and
                           would not contribute to investor information.





Mr. Amit Pande
Securities and Exchange Commission
February 8, 2006
Page 2

         Additionally, Flagstar Bancorp, Inc. (the "Company") hereby
         acknowledges that:

         o        The Company is responsible for the adequacy and accuracy of
                  the disclosure in the filing;

         o        Staff comments or changes to disclosure in response to staff
                  comments do not foreclose the Commission from taking any
                  action with respect to the filing; and

         o        The Company may not assert staff comments as a defense in any
                  proceeding initiated by the Commission or any person under the
                  federal securities laws of the United States.

         We trust that the foregoing is responsive to your comments. If you have
any questions or require further information, please contact the undersigned at
(248) 312-5580 or our outside counsel Jeremy Johnson of the Kutak Rock LLP law
firm at (202) 828-2463.

                                   Sincerely,

                                   FLAGSTAR BANCORP, INC.



                                   /s/      Paul D. Borja
                                   -----------------------

                                             Paul D. Borja
                                  Its:       Executive Vice President and Chief
                                             Financial Officer