[Flagstar Letterhead]


February 13, 2006

Mr. Kevin Vaughn
Accounting Branch Chief
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 10-K filed March 23, 2005
            File No. 001-16577

Dear Mr. Vaughn:

      We are writing in response to your letter, dated November 23, 2005 (the
"Comment Letter"), regarding the Annual Report on Form 10-K filed by Flagstar
Bancorp, Inc. (the "10-K") on March 23, 2005. This letter is being provided to
you today pursuant to our written request for an extension of time made to the
staff of the Securities and Exchange Commission (the "Staff") on December 7,
2005 and also reflects our discussions with the Staff through January 26, 2006.
Please note that our responses below reflect our understanding that we may defer
any amendments to the 10-K pending the Staff's review of this letter.

      Our responses to the Comment Letter are set forth below, in each case
preceded by a reproduction of the corresponding comment.

COMMENT NO. 1:    We continue to disagree with your assertion that all of your
                  loans are sold on a non-recourse basis. Section 4.16 of the
                  AICPA Audit and Accounting Guide for Depository and Lending
                  Institutions defines recourse risk as the risk that an
                  investor may either reject a loan or require the mortgage
                  lender to repurchase the loan if there is a defect in
                  underwriting or documentation, or if the loan becomes
                  delinquent within a specified amount of time after purchase.
                  We continue to believe that your obligation to repurchase the
                  loans or indemnify the purchaser for any related losses in the
                  event of a breach in representations and warranties meets the
                  definition of recourse risk. As previously requested, please
                  revise throughout the document to clarify and reflect that
                  loans are sold on a limited-recourse basis with respect to
                  certain representations and warranties. If you continue to
                  believe otherwise, please provide us with your complete legal
                  analysis of the risks you retained and copies of the contracts
                  for the major types of loan sales. In addition, revise to
                  clearly identify the triggers or motivation for repurchasing
                  these loans if you






Mr. Kevin Vaughn
Securities and Exchange Commission
February 13, 2006
Page 2

                  believe you were not legally obligated to repurchase them or
                  otherwise bear the risk of loss.

RESPONSE NO. 1:   As discussed with the Staff by telephone on December 2, 2005
                  and further on January 26, 2006, we propose to amend our
                  disclosure in our future SEC filings to describe Flagstar's
                  obligations with respect to loans sold by us in the secondary
                  market without referring to these sales as nonrecourse, and to
                  clarify the reasons we maintain a secondary market reserve for
                  these loan sales. We propose to amend our disclosure in our
                  future SEC filings to read as follows:

                      We sell most of the residential mortgage loans that we
                      originate into the secondary mortgage market. When we sell
                      mortgage loans, we make customary representations and
                      warranties to the purchasers about various characteristics
                      of each loan, such as the manner of origination, the
                      nature and extent of underwriting standards applied and
                      the types of documentation being provided. If a defect in
                      the origination process is identified, we may be required
                      to either repurchase the loan or indemnify the purchaser
                      for losses it sustains on the loan. If there are no such
                      defects, we have no liability to the purchaser for losses
                      it may incur on such loan. We maintain a secondary market
                      reserve to account for the expected losses related to
                      loans we may be required to repurchase (or the indemnity
                      payments we may have to make to purchasers). The secondary
                      market reserve takes into account both our estimate of
                      expected losses on loans sold during the current
                      accounting period, as well as adjustments to our previous
                      estimates of expected losses on loans sold during the
                      preceding five years. In each case these estimates are
                      based on our most recent data regarding loan repurchases,
                      actual credit losses on repurchased loans and recovery
                      history, among other factors. Changes in the secondary
                      market reserve due to current loan sales and adjustments
                      in our previous estimates are recorded together as an
                      increase or decrease in our gain on loan sales during the
                      current accounting period. The amount of the secondary
                      market reserve equaled $17.6 million and $19.0 million at
                      December 31, 2005 and 2004, respectively.

                  Please also see our responses to Comment No. 5 and Comment No.
                  7, each of which refers to this proposed disclosure language.

COMMENT NO. 2:    Please revise your disclosure regarding Flagstar Credit
                  Corporation to quantify the exposure to losses for reinsurance
                  assumed as of each balance sheet date. Separately disclose the
                  amount of such reinsurance assumed related to loans you have
                  sold from reinsurance assumed related to loans held in your
                  portfolio. If you believe the amount of such exposure is not
                  material to your results of operations or cash flows, please
                  tell us the amounts.

Mr. Kevin Vaughn
Securities and Exchange Commission
February 13, 2006
Page 3


RESPONSE NO. 2:   As discussed with the Staff, Flagstar Credit Corporation
                  ("FCC") provides credit enhancement with respect to certain
                  pools of mortgage loans underwritten and originated by us
                  during each calendar year. However, most of the risk
                  associated with these pools is ceded to unaffiliated private
                  mortgage insurance companies. The private mortgage insurance
                  companies provide loss coverage for foreclosure losses on up
                  to 5% of the "insured risk" with respect to each pool of loans
                  and for any loss greater than 10% of the insured risk with
                  respect to each pool. The insured risk for any pool of loans
                  is only 20% or less of the principal balance of the loans in
                  the pool. FCC's share of the total amount of this insured risk
                  is an intermediate tranche of credit enhancement risk, which
                  covers the 5.01% to 10% range.1 Therefore, until credit losses
                  on the entire pool of insured loans exceed 5% of the insured
                  risk, FCC will have no liability on its credit enhancement
                  obligation. At December 31, 2004, FCC's maximum exposure
                  amounted to $100.8 million. However, given that the credit
                  enhancement is provided on an aggregated pool basis (rather
                  than on an individual loan basis), that FCC's obligation is
                  subordinated to the primary insurers, and that the insured
                  mortgage loans are fully collateralized, we believe FCC's
                  actual risk exposure is immaterial. To date, no claim has been
                  made against FCC on the mortgage loan credit enhancement it
                  provides. Accordingly, we believe that disclosing FCC's loss
                  exposure would suggest a potential for loss that is actually
                  remote and therefore would not provide any meaningful guidance
                  to investors.

COMMENT NO. 3:    Tell us whether Flagstar Credit Corporation assumed PMI risk
                  on any of the loans you repurchased and subsequently recorded
                  losses on through the Secondary Marketing Reserve. Tell us
                  whether the third-party PMI insurer has paid any claims on
                  loans where they ceded reinsurance to Flagstar Credit. If so,
                  tell us the amounts involved and why reinsurance claims were
                  not triggered.

RESPONSE NO. 3:   We may repurchase loans as to which FCC had provided its
                  secondary tranche of credit enhancement. As set forth in our
                  response to Comment No. 2 above, FCC would be liable for
                  losses in excess of 5% of the original "insured risk" of the
                  pool of loans, which would continue to include any repurchased
                  loans. In some cases, third party mortgage insurance companies
                  that provided the primary level of mortgage insurance on these
                  repurchased loans have paid claims to us for credit losses on
                  loans we have repurchased. However, as noted in our response
                  to Comment No. 2, we have not yet had a circumstance in which
                  the credit losses suffered by a pool of loans for which FCC
                  provided credit enhancement have risen to a level that would
                  affect FCC's risk layer. Accordingly, FCC has never made a
                  payment with respect to any loan repurchased by us.

- --------
1    Accordingly, FCC's maximum exposure at any time equals 5% of the insured
     risk of the insured pools, or approximately 1% (i.e., 5% times the 20%
     insured risk) of the total principal balance of the loans in the pool.

Mr. Kevin Vaughn
Securities and Exchange Commission
February 13, 2006
Page 4


COMMENT NO. 4:    We note your response to comment 2 of our letter dated July 7,
                  2005. We disagree with your assertions that you do not hold
                  any retained interests in the loans sold to the FHLBI and that
                  you do not maintain any recourse on these loans. It is our
                  position that you do hold a beneficial interest in the loans
                  sold to the FHLBI as you maintain a right to receive all or a
                  portion of specified cash inflows from the loans via the
                  Lender Risk Account (LRA). It is also our position that you
                  have a recourse obligation related to these loans as you are
                  exposed to credit losses up to the amount of the LRA.

                  -   As a result, the cash basis accounting you have employed
                      to date would not be an acceptable method of accounting
                      for the LRA. Please revise your financial statements
                      accordingly.

                  -   Please revise to disclose how you account for all assets
                      obtained and liabilities incurred in the sale of loans to
                      the FHLBI. Refer to Questions 67 and 68 of the Q&A on SFAS
                      140 for additional guidance.

                  -   Please provide us with an analysis of your history of
                      collections on the LRA that supports your estimates of the
                      LRA used in your revised methodology for these amounts.

RESPONSE NO. 4:   We sold FHLBI approximately $335 million in loans from 2002
                  through 2005. At December 31, 2004, of those loans still
                  outstanding, the unpaid principal balance was $231 million. As
                  of that date, FHLBI maintained a corresponding Loss Reserve
                  Account (LRA) balance of approximately $120,000 or 0.05% of
                  the unpaid principal balance of those loans. Under the terms
                  of the FHLB loan purchase agreement we would be entitled to
                  the excess of the LRA over an FHLB-established 30 bps estimate
                  of expected losses in the loans we sold to the FHLB. We would
                  not, however, be responsible for any losses over and above
                  those that were reimbursed by the LRA.

                  Consistent with FAS 140, paragraphs 68 through 70, we
                  understand that generally an amount equal to the fair value of
                  the LRA would be recorded as a deferred income item and
                  accreted into income net of any expected losses arising from
                  the related loan pool. However, in our case, the current
                  amount of the LRA at issue is below our estimate of expected
                  losses on these loans. That is, in our judgment, our right to
                  receive any cash from the LRA is completely offset by the
                  expected losses inherent in the loan portfolios that we sold
                  to the FHLBI. Thus, the LRA effectively has no value to us.

                  Thus, although the FHLB's loan purchase program provides that
                  Flagstar has a right to receive any portion of the LRA not
                  applied against credit losses on the loan portfolio at a
                  future date, in our judgment there is no possibility of



Mr. Kevin Vaughn
Securities and Exchange Commission
February 13, 2006
Page 5


                  Flagstar ever receiving any material amount of these funds in
                  light of the rather insignificant size of the LRA as compared
                  to the related loan portfolio.

                  In the absence of any value being assigned to the LRA, we do
                  not believe it would be meaningful to investors from the
                  standpoint of accounting clarity to record the LRA as an asset
                  and to create a corresponding valuation allowance in an equal
                  amount to represent our estimate of expected losses on the
                  loans sold to the FHLBI. This is especially true given the
                  immaterial dollar amount of the LRA itself. Furthermore,
                  describing these loans as recourse obligations will, in our
                  opinion, create unnecessary confusion as to the true nature of
                  these loan sales. The fact of the matter is that FHLBI cannot
                  require us to "write a check" to reimburse it for any credit
                  losses above the LRA amount. In light of these facts, we
                  believe that our approach is not only reasonable, but is a
                  clear and accurate accounting for these transactions.

COMMENT NO. 5:    We note your response to comment 4 of our letter dated July 7,
                  2005. We are still unclear as to the purpose of and accounting
                  for your secondary market reserve. You disclose that the
                  secondary marketing reserve is "a reserve against probable
                  losses that will be incurred due to the repurchase of mortgage
                  loans sold in the secondary market." Please advise us as
                  follows with respect to this reserve:

                  -   Please revise to disclose whether you are recording an
                      obligation for the actual repurchase of these loans or
                      whether you are recording an allowance for potential
                      credit losses that you may realize once these loans are
                      repurchased.

                  -   If the purpose of this reserve is to record an obligation
                      for the repurchase of these loans due to breaches in
                      representations and warranties, please tell us how your
                      accounting complies with the guidance set forth in FIN 45
                      related to guarantees. In addition, please revise future
                      filings to provide the disclosures required by paragraph
                      13 of FIN 45.

                  -   If the purpose of this reserve is to record an allowance
                      for potential credit losses expected to be realized once
                      these loans are repurchased, please tell us the
                      authoritative literature upon which you relied in
                      determining this accounting to be appropriate and how you
                      determined that it was appropriate to net the Provision
                      for such losses against your Gain on sale.

RESPONSE NO. 5:   As discussed in our response to Comment No. 1, the secondary
                  market reserve reflects our estimate of expected losses on
                  loans once they have been repurchased by Flagstar. It is not
                  the purpose of the reserve to record an obligation to actually
                  repurchase these loans. As noted in our response to Comment
                  No. 1, we propose to clarify the purpose of our secondary
                  market reserve in our future SEC filings.

Mr. Kevin Vaughn
Securities and Exchange Commission
February 13, 2006
Page 6


                  We believe that recording the provision for such expected
                  losses on loan sales (whether as a result of loan sales during
                  the current accounting period or to take into consideration
                  adjustments to our estimate of expected losses from loans sold
                  in previous periods) as an adjustment against our gain on loan
                  sales in the current period is consistent with paragraph 11 of
                  SFAS No. 140 and with industry practice.


COMMENT NO. 6:    Please revise to provide a rollforward of this account balance
                  for the last three years.

RESPONSE NO. 6:   The rollforward of the secondary market reserve for the
                  previous three years, as well as 2005, together with the
                  allocation of the provision between the amount provided for
                  the current year and the amount of the provision that relates
                  to changes in prior year estimates is as follows:



                                              2005           2004           2003           2002
                                            --------       --------       --------       --------

                                                                             
                  Beginning balance         $ 19,002       $ 10,254       $  9,084       $ 12,972

                  Provision charged to
                    Gain on sale --
                     Current                   5,328          5,932         10,696          7,626
                     Prior                     7,156         18,105          3,464         (2,785)
                                            --------       --------       --------       --------
                     Total                    12,484         24,037         14,160          4,841
                                            --------       --------       --------       --------

                  Charge offs, net           (13,936)       (15,289)       (12,990)        (8,729)
                                            --------       --------       --------       --------


                  Ending balance            $ 17,550       $ 19,002       $ 10,254       $  9,084
                                            --------       --------       --------       --------


COMMENT NO. 7:    Please revise to clearly identify the timing of the provision
                  for the secondary market reserve. Separately quantify the
                  amounts that were recorded at the time of the sale versus the
                  amounts that were recorded subsequent to the sale.

RESPONSE NO. 7:   As noted in our response to Comment No. 1, the adjustment to
                  gain on loan sales in any accounting period for our provision
                  to the secondary market reserve results from (i) our estimate
                  of expected losses that we might incur on loans sold during
                  the accounting period and (ii) adjustments to our earlier
                  estimates of expected losses on loans sold during the
                  preceding five years. The entries for each are made based on
                  our internal methodology that we established effective in 2002
                  and continue to refine based on our ongoing analysis of credit
                  losses we incur on loans we repurchased.

                  Because of the inherent imprecision of our estimation process,
                  we believe that disclosure of these components of the
                  provision on the face of the statement of consolidated
                  earnings or elsewhere would improperly suggest a higher degree


Mr. Kevin Vaughn
Securities and Exchange Commission
February 13, 2006
Page 7


                  of certainty than is actually present. Indeed, this type of
                  disclosure could prove to be more confusing to financial
                  statement readers than helpful.

                  Accordingly, we propose to utilize the disclosure of our
                  secondary market reserve, as set forth in our response to
                  Comment 1, in future filings. Additionally, we will provide a
                  rollforward of our secondary market reserve for the periods
                  presented, but without the level of detail regarding the
                  provision as presented in Response No. 6.

COMMENT NO. 8:    As requested in comment 6 of our previous letter, please
                  revise to provide the disclosures required by Item 307 of
                  Regulation S-K with respect to your disclosure controls and
                  procedures.


RESPONSE NO. 8:   The disclosure required by Item 307 of Regulations S-K
                  regarding our disclosure controls and procedures was
                  inadvertently not included in our Annual Report on Form 10-K
                  for the year ended December 31, 2004. However, this disclosure
                  has been included in subsequent filings on Form 10-Q and,
                  accordingly, the current assessment of management of our
                  disclosure controls and procedures has been disclosed. As a
                  result, it does not seem worthwhile to amend our 10-K at this
                  time to include disclosure that has been superseded by
                  subsequent filings.

                  However, if the staff continues to be of the view that we
                  should amend our Annual Report on Form 10-K for the year ended
                  December 31, 2004, we will make the following disclosure:

                      Evaluation of Disclosure Controls and Procedures. A review
                      and evaluation was performed by our principal executive
                      and financial officers regarding the effectiveness of our
                      disclosure controls and procedures as of December 31,
                      2004, pursuant to Rule 13a-15(b) of the Securities Act of
                      1934. Based on that review and evaluation, the principal
                      executive and financial officers have concluded that our
                      current disclosure controls and procedures, as designed
                      and implemented, were not operating effectively as a
                      result of the material weaknesses reported in
                      "Management's annual report on internal control over
                      financial reporting" below."

         Flagstar Bancorp hereby acknowledges that:

         -        it is responsible for the adequacy and accuracy of the
                  disclosure in the filings;

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

Mr. Kevin Vaughn
Securities and Exchange Commission
February 13, 2006
Page 8


         -        it 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 forgoing is responsive to your comments. If you have
any questions regarding the foregoing 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
                                    ----------------------------------------
                                    By:   Paul D. Borja
                                    Its:  Executive Vice President and Chief
                                          Financial Officer