EXHIBIT 99.1 - ------------ WRITTEN CERTIFICATION OF CO-CHIEF EXECUTIVE OFFICERS AND CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 The undersigned, the Co-Chief Executive Officers and the Chief Financial Officer of AMLI Residential Properties Trust ("the "Company"), each hereby certifies that, to the best of each of their knowledge: (a) the Company's Report on Form 10-Q for the quarterly period ending June 30, 2003 filed with the Securities and Exchange Commission (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (b) information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Date: August 12, 2003 By: /s/ Allan J. Sweet ------------------------------ Allan J. Sweet Co-Chief Executive Officer Date: August 12, 2003 By: /s/ Philip N. Tague ------------------------------ Philip N. Tague Co-Chief Executive Officer Date: August 12, 2003 By: /s/ Robert J. Chapman ------------------------------ Robert J. Chapman Chief Financial Officer The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate disclosure document.