Exhibit 32.1

                            CERTIFICATION 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  quarterly  report  of  AmBase  Corporation  (the
"Company")  on Form 10-K for the period  ending  December 31, 2006 as filed with
the Securities  and Exchange  Commission on the date hereof (the  "Report"),  I,
Richard A. Bianco, Chief Executive 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 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 result of  operations of the
Company.


Date:  March 29, 2007                           /s/ Richard A. Bianco
                                                ---------------------
                                                Richard A. Bianco
                                                Chairman, President and Chief
                                                Executive Officer
                                                AmBase Corporation