Exhibit 1 ERP OPERATING LIMITED PARTNERSHIP (an Illinois limited partnership) $300,000,000 6.95% Notes due March 2, 2011 TERMS AGREEMENT Dated: February 27, 2001 To: ERP Operating Limited Partnership c/o Equity Residential Properties Trust Two North Riverside Plaza Chicago, Illinois 60606 Attention: David J. Neithercut Ladies and Gentlemen: We (the "Representatives") understand that ERP Operating Limited Partnership, an Illinois limited partnership ("ERP"), proposes to issue and sell $300,000,000 aggregate principal amount of 6.95% Notes due March 2, 2011 (the "Underwritten Securities"). Subject to the terms and conditions set forth or incorporated by reference herein, the Underwriters named below (the "Underwriters") severally, and not jointly, agree to purchase the respective amounts of the Underwritten Securities set forth below opposite their respective names, at the purchase price set forth below. Principal Amount of Underwriter Underwritten Securities ----------- ----------------------- Merrill Lynch, Pierce, Fenner & Smith Incorporated...................... $ 112,500,000 Chase Securities Inc...................... 112,500,000 Banc of America Securities LLC............ 37,500,000 Salomon Smith Barney Inc. ................ 37,500,000 ------------- Total............................ $ 300,000,000 ============= The Underwritten Securities shall have the following terms: TITLE: 6.95% Notes due March 2, 2011 PRINCIPAL AMOUNT TO BE ISSUED: $300,000,000 CURRENCY: U.S. Dollars CURRENT RATINGS: A3 by Moody's Investors Services, Inc. BBB+ by Standard & Poor's Ratings Services FORM: Registered book-entry form INITIAL PRICE TO PUBLIC: 99.772% of the principal amount of the Underwritten Securities plus accrued interest, if any, from March 2, 2001 PURCHASE PRICE: 99.122% of the principal amount of the Underwritten Securities SETTLEMENT DATE, TIME March 2, 2001, at 9:00 a.m. New York City AND PLACE: time at the offices of Piper Marbury Rudnick & Wolfe, 203 North LaSalle Street, Suite 1800, Chicago, Illinois 60601 for the delivery of documents; delivery of funds on March 2, 2001, in accordance with DTC procedures for the Underwritten Securities STATED MATURITY DATE: March 2, 2011 INTEREST RATE: 6.95% INTEREST PAYMENT DATES: Interest on the Notes will be payable semi- annually in arrears, on March 2 and September 2 of each year, beginning September 2, 2001 ADDITIONAL CO-MANAGERS, Chase Securities Inc., Banc of America IF ANY: Securities LLC and Salomon Smith Barney Inc. REDEMPTION: ERP may redeem the Underwritten Securities, at any time, in whole or, from time to time, in part, at the election of ERP, at a redemption price equal to the sum of (i) the principal amount of the Underwritten Securities being redeemed plus accrued interest thereon to the redemption date and (ii) the Make-Whole Amount (as defined in the Prospectus), if any, with respect to such Underwritten Securities (collectively, the "Redemption Price"). Notice of any optional redemption of any Underwritten Securities will be given to holders at their addresses, as shown in the Security Register, not more than 60 nor less than 30 days prior to the date fixed for redemption. The notice of redemption will specify, among other items, the Redemption Price and the principal amount of the Underwritten Securities held by such persons to be redeemed. DELAYED CONTRACTS: Not authorized OTHER: ERP is required to maintain Total Unencumbered Assets (as defined in the Prospectus) of not less than 150% of the aggregate outstanding principal amount of the Unsecured Debt (as defined in the Prospectus) of ERP. All the provisions contained in the document attached as ANNEX A hereto entitled "ERP Operating Limited Partnership--Debt Securities--Standard Underwriting Provisions" are hereby incorporated by reference in their entirety herein and shall be deemed to be a part of this Terms Agreement to the same extent as if such provisions had been set forth in full herein. Terms defined in such document are used herein as therein defined. -2- Please accept this offer no later than 6:00 P.M. (New York City time) on February 27, 2001, by signing a copy of this Terms Agreement in the space set forth below and returning the signed copy to us. Very truly yours MERRILL LYNCH & CO. MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED By: /s/ John C. Brady ------------------ Name: John C. Brady Title: Managing Director Acting on behalf of itself and the other named Underwriters. Accepted: ERP OPERATING LIMITED PARTNERSHIP By: EQUITY RESIDENTIAL PROPERTIES TRUST, not individually but as General Partner By: /s/ David J. Neithercut ------------------------ Name: David J. Neithercut Title: Executive Vice-President Chief Financial Officer