Exhibit 23 Consent of Independent Accountants We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-22553, 33-27417, 33-32224 and 33-17829) of our report dated March 14, 2002 relating to the financial statements of AmBase Corporation, which appears in this Form 10-K. PricewaterhouseCoopers LLP New York, New York March 27, 2002