1 EXHIBIT 3.1 TWELFTH AMENDMENT TO AGREEMENT OF LIMITED PARTNERSHIP OF SUMMIT PROPERTIES PARTNERSHIP, L.P. This TWELFTH AMENDMENT TO AGREEMENT OF LIMITED PARTNERSHIP OF SUMMIT PROPERTIES PARTNERSHIP, L.P. (this "Amendment") dated as of May 22, 1998, is entered into by and among Summit Properties Inc. (the "Company") and the Persons whose names are set forth on Exhibit A or Exhibit B as attached hereto. All capitalized terms contained herein and not otherwise defined herein shall have the meaning attributed to them in the Agreement. WHEREAS, the Company and the Persons whose names are set forth on Exhibit A, other than certain of the New Partners (the "Existing Partners") are partners of Summit Properties Partnership, L.P. (the "Partnership") pursuant to an Agreement of Limited Partnership dated as of January 29, 1994, as previously amended (as amended, the "Agreement"); and WHEREAS, Summit is to receive a contribution of an undivided interest in Legacy Square Apartments now held by TCR Legacy Square Limited Partnership ("Crow") in exchange for each of the Persons whose names are set forth on Exhibit B (the "New Partners"), all of whom are partners in Crow, being admitted to the Partnership as an Additional Limited Partner pursuant to Section 12.2 of the Agreement (unless such person already is a partner of the Partnership) and receiving the Partnership Units set forth opposite their names on Exhibit B attached hereto; and WHEREAS, the Company, the Existing Partners and the New Partners desire to cause the Agreement to be amended to reflect the admission of the New Partners and the issuance of the Partnership Units to the New Partners. NOW, THEREFORE, in accordance with the provisions of Section 4.2, Section 12.2 and Section 12.3 of the Agreement, the Agreement is hereby amended (a) to admit as an Additional Limited Partner each of the New Partners who is not currently a partner of the Partnership and (b) to substitute the Exhibit A attached hereto for the Exhibit A attached to the Agreement. Except as expressly amended by the provisions hereof or as may be necessary to effect the intent of the parties as evidenced by this Amendment, all other terms and provisions of the Agreement are hereby ratified and confirmed and remain in full force and effect. 2 IN WITNESS WHEROF, the parties hereto have executed this Amendment as of the date first above written. GENERAL PARTNER: SUMMIT PROPERTIES INC. By: /s/ Doug Brout --------------------- Name: Doug Brout --------------------- Title: Vice President --------------------- EXISTING PARTNERS: Those persons listed on Exhibit A attached hereto other than persons signing below as New Partners By: Summit Properties Inc., their attorney-in-fact By: /s/ Doug Brout --------------------- Name: Doug Brout --------------------- Title: Vice President --------------------- 3 SUMMIT PROPERTIES PARTNERSHIP, L.P. SIGNATURE PAGE TO BE EXECUTED BY EACH ADDITIONAL LIMITED PARTNER The undersigned hereby executes this Signature Page to the Agreement of Limited Partnerships dated as of January 29, 1994, as subsequently amended (the "Agreement") of Summit Properties Partnership, L.P., a Delaware limited partnership, for the purpose of being admitted to said Limited Partnership, as a Limited Partner, and the undersigned does further hereby adopt, accept, ratify, confirm and agree to be bound by all of the terms and conditions of said Agreement applicable to it as a Limited Partner, including, without limitation, the provisions of Section 2.4 and any other provision of the Agreement appointing the General Partner or the Liquidator (as those terms are defined in the Agreement) as attorney-in-fact for the undersigned. TCR LEGACY SQUARE LIMITED PARTNERSHIP By: TCR Atlanta 1996, Inc., its general partner By: /s/ Thomas J. Patterson ------------------------------- Name: Thomas J. Patterson ------------------------------- Title: Vice President ------------------------------- 4 SUMMIT PROPERTIES PARTNERSHIP, L.P. SIGNATURE PAGE TO BE EXECUTED BY EACH ADDITIONAL LIMITED PARTNER The undersigned hereby executes this Signature Page to the Agreement of Limited Partnerships dated as of January 29, 1994, as subsequently amended (the "Agreement") of Summit Properties Partnership, L.P., a Delaware limited partnership, for the purpose of being admitted to said Limited Partnership, as a Limited Partner, and the undersigned does further hereby adopt, accept, ratify, confirm and agree to be bound by all of the terms and conditions of said Agreement applicable to it as a Limited Partner, including, without limitation, the provisions of Section 2.4 and any other provision of the Agreement appointing the General Partner or the Liquidator (as those terms are defined in the Agreement) as attorney-in-fact for the undersigned. /s/ J. Ronald Terwilliger ------------------------------- J. Ronald Terwilliger 5 SUMMIT PROPERTIES PARTNERSHIP, L.P. SIGNATURE PAGE TO BE EXECUTED BY EACH ADDITIONAL LIMITED PARTNER The undersigned hereby executes this Signature Page to the Agreement of Limited Partnerships dated as of January 29, 1994, as subsequently amended (the "Agreement") of Summit Properties Partnership, L.P., a Delaware limited partnership, for the purpose of being admitted to said Limited Partnership, as a Limited Partner, and the undersigned does further hereby adopt, accept, ratify, confirm and agree to be bound by all of the terms and conditions of said Agreement applicable to it as a Limited Partner, including, without limitation, the provisions of Section 2.4 and any other provision of the Agreement appointing the General Partner or the Liquidator (as those terms are defined in the Agreement) as attorney-in-fact for the undersigned. /s/ Randy J. Pace ------------------------------- Randy J. Pace 6 SUMMIT PROPERTIES PARTNERSHIP, L.P. SIGNATURE PAGE TO BE EXECUTED BY EACH ADDITIONAL LIMITED PARTNER The undersigned hereby executes this Signature Page to the Agreement of Limited Partnerships dated as of January 29, 1994, as subsequently amended (the "Agreement") of Summit Properties Partnership, L.P., a Delaware limited partnership, for the purpose of being admitted to said Limited Partnership, as a Limited Partner, and the undersigned does further hereby adopt, accept, ratify, confirm and agree to be bound by all of the terms and conditions of said Agreement applicable to it as a Limited Partner, including, without limitation, the provisions of Section 2.4 and any other provision of the Agreement appointing the General Partner or the Liquidator (as those terms are defined in the Agreement) as attorney-in-fact for the undersigned. /s/ David J. Elwell ------------------------------- David J. Elwell 7 SUMMIT PROPERTIES PARTNERSHIP, L.P. SIGNATURE PAGE TO BE EXECUTED BY EACH ADDITIONAL LIMITED PARTNER The undersigned hereby executes this Signature Page to the Agreement of Limited Partnerships dated as of January 29, 1994, as subsequently amended (the "Agreement") of Summit Properties Partnership, L.P., a Delaware limited partnership, for the purpose of being admitted to said Limited Partnership, as a Limited Partner, and the undersigned does further hereby adopt, accept, ratify, confirm and agree to be bound by all of the terms and conditions of said Agreement applicable to it as a Limited Partner, including, without limitation, the provisions of Section 2.4 and any other provision of the Agreement appointing the General Partner or the Liquidator (as those terms are defined in the Agreement) as attorney-in-fact for the undersigned. /s/ Leonard W. Wood ------------------------------- Leonard W. Wood 8 SUMMIT PROPERTIES PARTNERSHIP, L.P. SIGNATURE PAGE TO BE EXECUTED BY EACH ADDITIONAL LIMITED PARTNER The undersigned hereby executes this Signature Page to the Agreement of Limited Partnerships dated as of January 29, 1994, as subsequently amended (the "Agreement") of Summit Properties Partnership, L.P., a Delaware limited partnership, for the purpose of being admitted to said Limited Partnership, as a Limited Partner, and the undersigned does further hereby adopt, accept, ratify, confirm and agree to be bound by all of the terms and conditions of said Agreement applicable to it as a Limited Partner, including, without limitation, the provisions of Section 2.4 and any other provision of the Agreement appointing the General Partner or the Liquidator (as those terms are defined in the Agreement) as attorney-in-fact for the undersigned. /s/ Harlan R. Crow ------------------------------- Harlan R. Crow 9 SUMMIT PROPERTIES PARTNERSHIP, L.P. SIGNATURE PAGE TO BE EXECUTED BY EACH ADDITIONAL LIMITED PARTNER The undersigned hereby executes this Signature Page to the Agreement of Limited Partnerships dated as of January 29, 1994, as subsequently amended (the "Agreement") of Summit Properties Partnership, L.P., a Delaware limited partnership, for the purpose of being admitted to said Limited Partnership, as a Limited Partner, and the undersigned does further hereby adopt, accept, ratify, confirm and agree to be bound by all of the terms and conditions of said Agreement applicable to it as a Limited Partner, including, without limitation, the provisions of Section 2.4 and any other provision of the Agreement appointing the General Partner or the Liquidator (as those terms are defined in the Agreement) as attorney-in-fact for the undersigned. LEONARD W. WOOD FAMILY LIMITED PARTNERSHIP By: /s/ Leonard W. Wood ------------------------------- Leonard W. Wood, General Partner 10 SUMMIT PROPERTIES PARTNERSHIP, L.P. SIGNATURE PAGE TO BE EXECUTED BY EACH ADDITIONAL LIMITED PARTNER The undersigned hereby executes this Signature Page to the Agreement of Limited Partnerships dated as of January 29, 1994, as subsequently amended (the "Agreement") of Summit Properties Partnership, L.P., a Delaware limited partnership, for the purpose of being admitted to said Limited Partnership, as a Limited Partner, and the undersigned does further hereby adopt, accept, ratify, confirm and agree to be bound by all of the terms and conditions of said Agreement applicable to it as a Limited Partner, including, without limitation, the provisions of Section 2.4 and any other provision of the Agreement appointing the General Partner or the Liquidator (as those terms are defined in the Agreement) as attorney-in-fact for the undersigned. CFP RESIDENTIAL By: Crow Family, Inc., its general partner By: /s/ Sarah Puckett ------------------------------- Name: Sarah Puckett ------------------------------- Title: Vice President -------------------------------