EXHIBIT 23.4 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS We hereby consent to the incorporation by reference in the Prospectus constituting part of the Registration Statement on Form S-3 (No. 333-11031) of HFS Incorporated of our report dated February 2, 1996, relating to the consolidated financial statements of Ideon Group, Inc., which appears in the Annual Report on Form 10-K of CUC International Inc. for the year ended January 31, 1997. /s/ PRICE WATERHOUSE LLP Tampa, Florida October 31, 1997