EXHIBIT 32.2

                    CERTIFICATION OF CHIEF FINANCIAL OFFICER
                       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 on Form 10-K of American Home
Mortgage Investment Corp. (the "Company") for the fiscal year ended December 31,
2004, as filed with the Securities and Exchange Commission on the date hereof
(the "Report"), I, Stephen A. Hozie, Executive Vice President and Chief
Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350,
as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to
the best of my knowledge:

      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.

Date: March 16, 2005


/s/ Stephen A. Hozie
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Stephen A. Hozie
Executive Vice President and
Chief Financial Officer