EXHIBIT 32.1 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 In connection with the accompanying Annual Report on Form 10-K of Manufactured Home Communities, Inc. for the year ended December 31, 2003 (the "Annual Report"), I, Michael B. Berman, Vice President, Treasurer and Chief Financial Officer of Manufactured Home Communities, Inc., hereby certify pursuant to 18 U.S.C. Section 1350, as adopted by Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge: 1. the Annual 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 Annual Report fairly presents, in all material respects, the financial condition and results of operations of Manufactured Home Communities, Inc. Date: March 10, 2004 By: /s/ Michael B. Berman --------------- -------------------------------- Michael B. Berman Vice President, Treasurer and Chief Financial Officer A SIGNED ORIGINAL OF THIS WRITTEN STATEMENT REQUIRED BY SECTION 906 HAS BEEN PROVIDED TO MANUFACTURED HOME COMMUNITIES, INC. AND WILL BE RETAINED BY MANUFACTURED HOME COMMUNITIES, INC. AND FURNISHED TO THE SECURITIES AND EXCHANGE COMMISSION OR ITS STAFF UPON REQUEST.