ERP OPERATING LTD PARTNERSHIP
8-K, 1998-09-28
REAL ESTATE INVESTMENT TRUSTS
Previous: ERP OPERATING LTD PARTNERSHIP, 424B5, 1998-09-28
Next: DEAN WITTER GLOBAL ASSET ALLOCATION FUND, NSAR-A, 1998-09-28



<PAGE>

     As filed with the Securities and Exchange Commission on September 28, 1998

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------

                         SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, D.C.  20549



                                      FORM 8-K

                 CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                        THE SECURITIES EXCHANGE ACT OF 1934


        Date of report (Date of earliest event reported): SEPTEMBER 23, 1998


                         ERP OPERATING LIMITED PARTNERSHIP
                 (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)



              ILLINOIS                   0-24920               36-3894853
  (STATE OR OTHER JURISDICTION       (COMMISSION FILE       (I.R.S. EMPLOYER
OF INCORPORATION OR ORGANIZATION)        NUMBER)           IDENTIFICATION NO.)



    TWO NORTH RIVERSIDE PLAZA, SUITE 400
             CHICAGO, ILLINOIS                                   60606
  (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                     (ZIP CODE)


        Registrant's telephone number, including area code:  (312) 474-1300

                                   NOT APPLICABLE
           (FORMER NAME OR FORMER ADDRESS, IF CHANGED SINCE LAST REPORT)

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------

<PAGE>

ITEM 7.  Financial Statements, PRO FORMA Financial Information and Exhibits

<TABLE>
<CAPTION>
Exhibit Number       Exhibit
- --------------       -------
<S>                  <C>

1.1                  Form of Terms Agreement dated September 23, 1998 between
                     ERP Operating Limited Partnership and J.P. Morgan
                     Securities Inc., which is being filed pursuant to
                     Regulation S-K, Item 601(b)(1) as an exhibit to the
                     Registrant's registration statement on Form S-3, file no.
                     333-45557, under the Securities Act of 1933, as amended,
                     and which, as this Form 8-K filing is incorporated by
                     reference in such registration statement, is set forth in
                     full in such registration statement; the Form of Terms
                     Agreement incorporates the terms and provisions of the
                     Purchase Agreement filed herewith as Exhibit 1.3.

1.2                  Form of Terms Agreement dated September 25, 1998 between
                     ERP Operating Limited Partnership and J.P. Morgan
                     Securities Inc., which is being filed pursuant to
                     Regulation S-K, Item 601(b)(1) as an exhibit to the
                     Registrant's registration statement on Form S-3, file no.
                     333-45557, under the Securities Act of 1933, as amended,
                     and which, as this Form 8-K filing is incorporated by
                     reference in such registration statement, is set forth in
                     full in such registration statement; the Form of Terms
                     Agreement incorporates the terms and provisions of the
                     Purchase Agreement filed herewith as Exhibit 1.3.

1.3                  Purchase Agreement dated September 23, 1998 between ERP
                     Operating Limited Partnership and J.P. Morgan Securities
                     Inc., which is being filed pursuant to Regulation S-K,
                     Item 601(b)(1) as an exhibit to the Registrant's
                     registration statement on Form S-3, file no. 333-45557,
                     under the Securities Act of 1933, as amended, and which,
                     as this Form 8-K filing is incorporated by reference in
                     such registration statement, is set forth in full in such
                     registration statement.

5                    Opinion of Rosenberg & Liebentritt, P.C., which is being
                     filed pursuant to Regulation 601(b)(5) as an exhibit to
                     the Registrant's registration statement on Form S-3, file
                     no. 333-45557, under the Securities Act of 1933, as
                     amended, and which, as this Form 8-K filing is
                     incorporated by reference in such registration statement,
                     is set forth in full in such registration statement.
</TABLE>


                                       2

<PAGE>

                                  SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                ERP OPERATING LIMITED PARTNERSHIP

                                By:  EQUITY RESIDENTIAL PROPERTIES TRUST,
                                     its general partner

Date:  September 28, 1998       By:  /s/ Bruce C. Strohm
                                     -----------------------------------------
                                     Bruce C. Strohm
                                     Executive Vice President, General Counsel
                                     and Secretary








                                       3


<PAGE>
                          ERP OPERATING LIMITED PARTNERSHIP
                         (an Illinois limited partnership)
                                          
                  $100,000,000 6.15% Notes due September 15, 2000
                                          
                                  TERMS AGREEMENT
                                          

                                                     Dated:  September 23, 1998

To:  ERP Operating Limited Partnership
     c/o Equity Residential Properties Trust
     Two North Riverside Plaza
     Chicago, Illinois 60606



Ladies and Gentlemen:

     We understand that ERP Operating Limited Partnership, an Illinois limited
partnership ("ERP"), proposes to issue and sell $100,000,000 aggregate principal
amount of 6.15% Notes due September 15, 2000 (the "Notes") (such Notes being
hereinafter also referred to as the "Underwritten Securities").  Subject to the
terms and conditions set forth or incorporated by reference herein, J.P. Morgan
Securities Inc. (the "Underwriter") agrees to purchase the Underwritten
Securities at 99.594% of the principal amount thereof.  

                                          
     The Underwritten Securities shall have the following terms (capitalized
terms used but not defined herein shall have the meanings given to them in the
attached Purchase Agreement):
                                          

 TITLE:                       6.15% Notes due September 15, 2000

 PRINCIPAL AMOUNT TO BE
 ISSUED:                      $100,000,000

 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:     At varying prices related to the prevailing
                              market prices at the time of the sale

 PURCHASE PRICE:              99.594% of the principal amount of the
                              Underwritten Securities

<PAGE>

 SETTLEMENT DATE, TIME AND    September 28, 1998, at 9:00 a.m. New York City
 PLACE:                       time at the offices of Rosenberg & Liebentritt,
                              P.C., Two North Riverside Plaza, Suite 1600,
                              Chicago, Illinois 60606 for the delivery of
                              documents; delivery of funds on September 28,
                              1998 in accordance with DTC procedures for the
                              Underwritten Securities

 STATED MATURITY DATE:        September 15, 2000

 INTEREST RATE:               6.15%

 INTEREST PAYMENT DATES:      Interest on the Notes will be payable semi-
                              annually in arrears, on March 15 and September 15
                              of each year, beginning March 15, 1999.

 REDEMPTION:                  The Notes may not be redeemed by ERP prior to
                              their stated maturity date of September 15, 2000.

 OTHER:                       The Notes are not repayable at the option of any
                              holder prior to their stated maturity date of
                              September 15, 2000.  


     All the provisions contained in the document attached as ANNEX A hereto
entitled "ERP Operating Limited Partnership--Debt Securities--Purchase
Agreement" (the "Purchase Agreement"), dated September 23, 1998 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.  Defined terms used herein have the same meaning as
defined in the Purchase Agreement and the prospectus supplement, dated September
23, 1998 (the "Prospectus Supplement"), to the prospectus dated April 6, 1998
(together with the Prospectus Supplement, the "Prospectus").  


                                       - 2 -

<PAGE>

 Please accept this offer by signing a copy of this Terms Agreement in the space
set forth below and returning the signed copy to us no later than 6:00 p.m. (New
York City time) on September 23, 1998 by signing a copy of this Terms Agreement
in the space set forth below and returning the signed copy to us.

     
                                           Very truly yours
     
     
                                          J.P. MORGAN SECURITIES INC.
          
          
          
                                          By:  ____________________________
                                               Name:  
                                               Title: 
          
          


Accepted:

ERP OPERATING LIMITED PARTNERSHIP

By:  EQUITY RESIDENTIAL PROPERTIES TRUST,
     not individually but as General Partner

     By:  __________________________________
          Name:  
          Title:  


<PAGE>
                          ERP OPERATING LIMITED PARTNERSHIP
                         (an Illinois limited partnership)
                                          
                   $45,000,000 6.15% Notes due September 15, 2000
                                          
                                  TERMS AGREEMENT
                                          

                                                    Dated:  September 25, 1998

To:  ERP Operating Limited Partnership
     c/o Equity Residential Properties Trust
     Two North Riverside Plaza
     Chicago, Illinois 60606



Ladies and Gentlemen:

     We understand that ERP Operating Limited Partnership, an Illinois limited
partnership ("ERP"), proposes to issue and sell $45,000,000 aggregate principal
amount of 6.15% Notes due September 15, 2000 (the "Notes") (such Notes being
hereinafter also referred to as the "Underwritten Securities").  Subject to the
terms and conditions set forth or incorporated by reference herein, J.P. Morgan
Securities Inc. (the "Underwriter") agrees to purchase the Underwritten
Securities at 99.685% of the principal amount thereof.  

                                          
     The Underwritten Securities shall have the following terms (capitalized
terms used but not defined herein shall have the meanings given to them in the
attached Purchase Agreement):
                                          


 TITLE:                       6.15% Notes due September 15, 2000

 PRINCIPAL AMOUNT TO BE
 ISSUED:                      $45,000,000

 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:     At varying prices related to the prevailing
                              market prices at the time of the sale

 PURCHASE PRICE:              99.685% of the principal amount of the
                              Underwritten Securities

<PAGE>

 SETTLEMENT DATE, TIME AND    September 28, 1998, at 9:00 a.m. New York City
 PLACE:                       time at the offices of Rosenberg & Liebentritt,
                              P.C., Two North Riverside Plaza, Suite 1600,
                              Chicago, Illinois 60606 for the delivery of
                              documents; delivery of funds on September 28,
                              1998 in accordance with DTC procedures for the
                              Underwritten Securities

 STATED MATURITY DATE:        September 15, 2000

 INTEREST RATE:               6.15%

 INTEREST PAYMENT DATES:      Interest on the Notes will be payable semi-
                              annually in arrears, on March 15 and September 15
                              of each year, beginning March 15, 1999.

 REDEMPTION:                  The Notes may not be redeemed by ERP prior to
                              their stated maturity date of September 15, 2000.

 OTHER:                       The Notes are not repayable at the option of any
                              holder prior to their stated maturity date of
                              September 15, 2000.  

     All the provisions contained in the document attached as ANNEX A hereto
entitled "ERP Operating Limited Partnership--Debt Securities--Purchase
Agreement" (the "Purchase Agreement"), dated September 23, 1998 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.  Defined terms used herein have the same meaning as
defined in the Purchase Agreement and the prospectus supplement, dated September
25, 1998 (the "Prospectus Supplement"), to the prospectus dated April 6, 1998
(together with the Prospectus Supplement, the "Prospectus").  




                                       - 2 -

<PAGE>

 Please accept this offer by signing a copy of this Terms Agreement in the space
set forth below and returning the signed copy to us no later than 6:00 p.m. (New
York City time) on September 25, 1998 by signing a copy of this Terms Agreement
in the space set forth below and returning the signed copy to us.

     
     
                                           Very truly yours
     
     
                                          J.P. MORGAN SECURITIES INC.
          
          
          
                                          By:  ____________________________
                                               Name:  
                                               Title: 
          

Accepted:

ERP OPERATING LIMITED PARTNERSHIP

By:  EQUITY RESIDENTIAL PROPERTIES TRUST,
     not individually but as General Partner

     By:  __________________________________
          Name:  
          Title:  


<PAGE>


                                   $1,275,000,000
                                          
                         ERP OPERATING LIMITED PARTNERSHIP
                         (an Illinois limited partnership)
                                          
                                  Debt Securities

                                 PURCHASE AGREEMENT

                                                      September 23, 1998

J.P. MORGAN SECURITIES INC.
60 Wall Street
New York, New York 10260

Ladies and Gentlemen:

          ERP Operating Limited Partnership, a limited partnership organized 
under the laws of the State of Illinois ("ERP"), proposes to issue and sell 
up to $1,275,000,000 aggregate principal amount of its senior debt securities 
(the "Securities"), from time to time, in one or more offerings on terms to 
be determined at the time of sale.  The Securities will be issued under an 
indenture dated as of October 1, 1994 (the "Indenture") between ERP and The 
First National Bank of Chicago, as trustee (the "Trustee").  Each series of 
Securities may vary, as applicable, as to aggregate principal amount, 
maturity date, interest rate or formula and timing of payments thereof, 
redemption or repayment provisions, and any other variable terms which the 
Indenture contemplates may be set forth in the Securities as issued from time 
to time.  As used herein, "you" and "your," unless the context otherwise 
require, shall mean the parties to whom this Agreement is addressed together 
with the other parties, if any, identified in the applicable Terms Agreement 
(as hereinafter defined) as additional co-managers with respect to 
Underwritten Securities (as hereinafter defined) purchased pursuant thereto.

          Whenever ERP determines to make an offering of Securities through 
you or through an underwriting syndicate managed by you, ERP will enter into 
an agreement (the "Terms Agreement") providing for the sale of such 
Securities (the "Underwritten Securities") to, and the purchase and offering 
thereof by, you and such other underwriters, if any, selected by you as have 
authorized you to enter into such Terms Agreement on their behalf (the 
"Underwriters," which term shall include you whether acting alone in the sale 
of the Underwritten Securities or as a member of an underwriting syndicate 
and any Underwriter substituted pursuant to Section 10 hereof).  The Terms 
Agreement relating to the offering of Underwritten Securities shall specify 
the initial principal amount of Underwritten Securities to be initially 
issued the ("Initial Underwritten Securities"), the names of the 

<PAGE>

Underwriters participating in such offering (subject to substitution as 
provided in Section 10 hereof), the principal amount of Initial Underwritten 
Securities which each such Underwriter severally agrees to purchase, the 
names of such of you or such other Underwriters acting as co-managers, if 
any, in connection with such offering, the price at which the Initial 
Underwritten Securities are to be purchased by the Underwriters from ERP, the 
initial public offering price, if any, of the Initial Underwritten 
Securities, the time and place of delivery and payment, any delayed delivery 
arrangements and any other variable terms of the Initial Underwritten 
Securities (including, but not limited to, current ratings, designations, 
denominations, interest rates or formulas, interest payment dates, maturity 
dates and redemption or repayment provisions applicable to the Initial 
Underwritten Securities).  In addition, each Terms Agreement shall specify 
whether ERP has agreed to grant to the Underwriters an option to purchase 
additional Underwritten Securities to cover over-allotments, if any, and the 
aggregate principal amount of Underwritten Securities subject to such option 
(the "Option Securities").  As used herein, the term "Underwritten 
Securities" shall include the Initial Underwritten Securities and all or any 
portion of the Option Securities agreed to be purchased by the Underwriters 
as provided herein, if any.  The Terms Agreement, which shall be 
substantially in the form of Exhibit A hereto, may take the form of an 
exchange of any standard form of written telecommunications between you and 
ERP.  Each offering of Underwritten Securities through you or through an 
underwriting syndicate managed by you will be governed by this Agreement, as 
supplemented by the applicable Terms Agreement.

          ERP has filed with the Securities and Exchange Commission (the 
"Commission") a registration statement on Form S-3 (No. 333-45557) for the 
registration of the Securities under the Securities Act of 1933, as amended 
(the "1933 Act"), and the offering thereof from time to time in accordance 
with Rule 430A or Rule 415 of the rules and regulations of the Commission 
under the 1933 Act (the "1933 Act Regulations"), and ERP has filed such 
amendments thereto as may have been required prior to the execution of the 
applicable Terms Agreement. Such registration statement (as amended, if 
applicable) has been declared effective by the Commission and the Indenture 
has been qualified under the Trust Indenture Act of 1939, as amended (the 
"1939 Act").  Such registration statement and the prospectus constituting a 
part thereof (including in each case the information, if any, deemed to be 
part thereof pursuant to Rule 430A(b) of the 1933 Act Regulations), and each 
prospectus supplement relating to the offering of Underwritten Securities 
pursuant to Rule 415 of the 1933 Act Regulations (the "Prospectus 
Supplement"), including all documents incorporated therein by reference, as 
from time to time amended or supplemented pursuant to the 1933 Act, the 
Securities Exchange Act of 1934, as amended (the "1934 Act") or otherwise, 
are collectively referred to herein as the "Registration Statement" and the 
"Prospectus," respectively; provided, that if any revised prospectus shall be 
provided to you by ERP for use in connection with the offering of 
Underwritten Securities which differs from the Prospectus on file at the 
Commission at the time the Registration 

                                      -2-

<PAGE>

Statement becomes effective (whether or not such revised prospectus is 
required to be filed by ERP pursuant to Rule 424(b) of the 1933 Act 
Regulations), the term "Prospectus" shall refer to each such revised 
prospectus from and after the time it is first provided to you for such use; 
provided, further, that a Prospectus Supplement shall be deemed to have 
supplemented the Prospectus only with respect to the offering of Underwritten 
Securities to which it relates.  All references in this Agreement to 
financial statements and schedules and other information which is 
"contained," "included" or "stated" in the Registration Statement or the 
Prospectus (and all other references of like import) shall be deemed to mean 
and include all such financial statements and schedules and other information 
which is or is deemed to be incorporated by reference in the Registration 
Statement or the Prospectus, as the case may be; and all references in this 
Agreement to amendments or supplements to the Registration Statement or the 
Prospectus shall be deemed to mean and include the filing of any document 
under the 1934 Act which is or is deemed to be incorporated by reference in 
the Registration Statement or the Prospectus, as the case may be.

          ERP owns all of the issued and outstanding shares of preferred 
stock of Equity Residential Properties Management Corp., a Delaware 
corporation, Equity Residential Properties Management Corp. II, a Delaware 
corporation, and Equity Residential Properties Management Corp. III, a 
Delaware corporation (collectively, the "Management Corporations").  The term 
"subsidiaries," even used with respect to ERP, shall include (i) the 
Management Corporations, (ii) each consolidated subsidiary of ERP, (iii) any 
entity the operations of which are included in the consolidated financial 
statements for ERP for the most recent fiscal period included in the 
Prospectus and (iv) any subsidiary (other than ERP) of Equity Residential 
Properties Trust, a Maryland real estate investment trust and ERP's general 
partner ("EQR"), which owns an interest in any entity described in clause 
(ii) above.

          Section 1.  REPRESENTATIONS AND WARRANTIES.

          (a)  ERP represents and warrants to you, as of the date hereof, 
and to you and each other Underwriter named in the applicable Terms 
Agreement, as of the date thereof (in each case, a "Representation Date"), as 
follows:

               (i)    The Registration Statement and the Prospectus, at the 
          time the Registration Statement became effective, complied, and as of 
          each Representation Date will comply, in all material respects with 
          the requirements of the 1933 Act, 1933 Act Regulations and the 
          1939 Act and the rules and regulations thereunder (the "1939 Act 
          Regulations"); the Registration Statement, at the time the 
          Registration Statement became effective, did not, and as of each 
          Representation Date, will not, contain an untrue statement of a 
          material fact or omit to state a material fact required to be stated 
          therein or necessary to make the statements therein not misleading; 
          the Prospectus, as of the date 

                                      -3-

<PAGE>

          hereof does not, and as of each Representation Date (unless the term 
          "Prospectus" refers to a prospectus which has been provided to you 
          by ERP for use in connection with an offering of Underwritten 
          Securities which differs from the Prospectus on file at the 
          Commission at the time the Registration Statement becomes effective, 
          in which case at the time it is first provided to you for such use) 
          and Closing Time (as hereinafter defined) will not, include an untrue 
          statement of a material fact or omit to state a material fact 
          necessary in order to make the statements therein, in the light of 
          the circumstances under which they were made, not misleading; 
          provided, however, that the representations and warranties in this 
          subsection shall not apply to statements in or omissions from the 
          Registration Statement or Prospectus made in reliance upon and in 
          conformity with information furnished to ERP in writing by any 
          Underwriter through you expressly for use in the Registration 
          Statement or Prospectus or to that part of the Registration Statement 
          which shall constitute the Statement of Eligibility and Qualification 
          on Form T-1 under the 1939 Act (the "Statement of Eligibility") of 
          the Trustee under the Indenture.

                    
               (ii)   Each preliminary prospectus, preliminary prospectus 
          supplement and Prospectus Supplement filed as part of the 
          Registration Statement as originally filed or as part of any 
          amendment thereto, or filed pursuant to Rule 424 under the 1933 Act, 
          complied or will comply when so filed in all material respects with 
          the 1933 Act and the 1933 Act Regulations thereunder.

               (iii)  No stop order suspending the effectiveness of the
          Registration Statement or any part thereof has been issued and no
          proceeding for that purpose has been instituted or, to the knowledge
          of ERP, threatened by the Commission or by the state securities
          authority of any jurisdiction.  No order preventing or suspending the
          use of the Prospectus has been issued and no proceeding for that
          purpose has been instituted or, to the knowledge of ERP, threatened by
          the Commission or by the state securities authority of any
          jurisdiction.

               (iv)   ERP's independent public accountants who certified the
          financial statements and supporting schedules included or incorporated
          by reference in the Registration Statement and the Prospectus, are
          independent public accountants as required by the 1933 Act and the
          1933 Act Regulations.

               (v)    The consolidated financial statements and related notes
          included in the Registration Statement and the Prospectus present
          fairly the financial position of ERP and its consolidated subsidiaries
          as at the dates indicated and the results of their operations
          specified, and 

                                      -4-

<PAGE>

          except as may otherwise be stated in the Registration Statement and 
          Prospectus, have been prepared in accordance with generally accepted 
          accounting principles applied on a consistent basis throughout 
          such periods.  The supporting schedules included in the Registration 
          Statement present fairly the information required to be stated 
          therein.  The financial information and statistical data included 
          in the Registration Statement and the Prospectus present fairly 
          the information included therein and have been prepared on a
          basis consistent with that of the financial statements included in the
          Registration Statement and the Prospectus.  The pro forma financial
          statements included in the Registration Statement and Prospectus
          comply in all material respects with the applicable requirements of
          Rule 11-02 of Regulation S-X of the Commission and the pro forma
          adjustments have been properly applied to the historical amounts in
          the compilation of such statements and the assumptions used in the
          preparation thereof are, in the opinion of ERP, reasonable.

               (vi)   Since the respective dates as of which information is
          given in the Registration Statement and the Prospectus, except as
          otherwise stated or contemplated therein, (A) there has been no
          material adverse change in the condition, financial or otherwise, or
          in the earnings, assets, business affairs or business prospects of ERP
          and its subsidiaries, considered as a single enterprise, whether or
          not arising in the ordinary course of business, (B) there have been no
          material transactions entered into by ERP or any of its subsidiaries,
          other than transactions in the ordinary course of business, which are
          material with respect to ERP and its subsidiaries considered as a
          single enterprise, (C) neither ERP nor any of its subsidiaries has
          incurred any material obligation or liability, direct, contingent or
          otherwise and (D) there has been no material change in the short-term
          debt or long-term debt of ERP.

               (vii)  ERP and each of its subsidiaries has been duly formed, 
          and is validly existing and in good standing as a partnership, limited
          liability company or corporation under the laws of its jurisdiction of
          organization, with partnership, limited liability company or
          corporation power and authority to carry on its business and to own or
          lease its properties as described in the Prospectus.

               (viii) ERP and each of its subsidiaries is duly qualified or
          registered as a foreign partnership, limited liability company or
          corporation in good standing and authorized to do business in each
          jurisdiction in which such qualification is required whether by the
          nature of its business or its ownership or leasing of property, except
          where the failure to so qualified would not have a material adverse

                                      -5-

<PAGE>

          effect on the condition, financial or otherwise, or the earnings,
          assets, business affairs or business prospects of ERP and its
          subsidiaries considered as a single enterprise.

               (ix)   All of the issued and outstanding shares of capital 
          stock, limited liability company interests and partnership interests, 
          as the case may be, of each subsidiary have been validly issued and 
          fully paid and are owned by ERP, EQR, another subsidiary, and/or 
          certain affiliated entities as described in the Registration 
          Statement, in each case free and clear of any security interest, 
          mortgage, pledge, lien, encumbrance, claim or equity.  ERP owns no 
          direct or indirect equity interest in any entity other than its 
          subsidiaries, except for such interests as, in the aggregate, are 
          not material to the condition, financial or otherwise, or the 
          earnings, assets, business affairs or business prospects of ERP 
          and its subsidiaries considered as a single enterprise.

               (x)    Except for transactions described in the Prospectus, 
          there are no outstanding rights, warrants or options to acquire, or
          instruments convertible into or exchangeable for, or agreements or
          understandings with respect to the sale or issuance of, any shares of
          capital stock of or partnership or other equity interest in ERP or any
          subsidiary of ERP except for multifamily property acquisition
          agreements with respect to the sale or issuance of OP Units which are
          not material in amount.

               (xi)   The capitalization of ERP is as set forth in the
          Prospectus and all of the outstanding partnership interests in ERP
          have been duly authorized and validly issued and the capital
          contributions with respect thereto have been made in full; the
          partnership interests owned by EQR are owned in the percentage amount
          set forth in the Prospectus free and clear of any security interest,
          mortgage, pledge, lien, encumbrance, claim or equity.

               (xii)  ERP has full partnership power and authority to enter into
          and to perform its obligations under the Indenture, this Agreement,
          the applicable Terms Agreement and the Delayed Delivery Contracts (as
          defined in Section 2 hereof), if any, and this Agreement has been, and
          as of each Representation Date, the applicable Terms Agreement and the
          Delayed Delivery Contracts, if any, will have been, duly authorized,
          executed and delivered by ERP, and each is or will be a valid and
          binding obligation of ERP, enforceable against ERP in accordance with
          its terms, except as (A) the enforceability thereof may be limited by
          bankruptcy, insolvency, reorganization, moratorium or similar laws
          affecting creditors' rights generally, (B) rights of 

                                      -6-

<PAGE>

          acceleration and  the availability of equitable remedies may be 
          limited by equitable principles of general applicability and (C) 
          rights to indemnity and contribution hereunder may be limited by 
          state or federal securities laws or the public policy underlying 
          such laws.

               (xiii) The Indenture (A) has been duly and validly 
          authorized, executed and delivered by ERP, and when executed and 
          delivered by the Trustee, will constitute a valid and binding 
          obligation of ERP, enforceable against ERP in accordance with its 
          terms, except as (i) the enforceability thereof may be limited by 
          bankruptcy, insolvency, reorganization, moratorium or similar laws 
          affecting creditors' rights generally and (ii) rights of acceleration 
          and the availability of equitable remedies may be limited by equitable
          principles of general applicability; and (B) conforms in all material
          respects to the description thereof in the Prospectus.

               (xiv)  The Underwritten Securities (A) have been duly 
          authorized by ERP and, when executed, authenticated, issued and 
          delivered in the manner provided for in the Indenture, against payment
          of the consideration therefor specified in the applicable Terms 
          Agreement or any Delayed Delivery Contract (as defined in Section 2 
          hereof), the Underwritten Securities will constitute valid and legally
          binding obligations of ERP entitled to the benefits of the Indenture 
          and enforceable against ERP in accordance with their terms, except as 
          (i) the enforceability thereof may be limited by bankruptcy, 
          insolvency, reorganization, moratorium or similar laws affecting 
          creditors' rights generally and (ii) rights of acceleration and the 
          availability of equitable remedies may be limited by equitable 
          principles of general applicability; and (13) conform in all material 
          respects to the descriptions thereof in the Prospectus.

               (xv)   There is no action, suit or proceeding before or by 
          any court or governmental agency or body, domestic or foreign, now
          pending, or, to the knowledge of ERP, threatened, against or affecting
          ERP or any of its subsidiaries which is required to be disclosed in
          the Prospectus (other than as disclosed therein) or which might result
          in any material adverse change in the condition, financial or
          otherwise, or in the earnings, assets, business affairs or business
          prospects of ERP and its subsidiaries considered as a single
          enterprise, or which might materially and adversely affect the
          properties or assets thereof or which might materially and adversely
          affect the consummation of this Agreement, the applicable Terms
          Agreement or the Indenture or the transactions contemplated herein and
          therein; all pending legal or governmental proceedings to which ERP or
          any of its subsidiaries is a party or of which any of their properties
          or assets is the subject which 

                                      -7-

<PAGE>

          are not described in the Prospectus, including ordinary routine 
          litigation incidental to the business, are, considered in the 
          aggregate, not material; and there are no contracts or documents 
          of ERP or any of its subsidiaries which would be required to be 
          filed as exhibits to the Registration Statement by the 1933 Act
          or the 1933 Act Regulations which have not been filed as exhibits to
          the Registration Statement.

               (xvi)  None of ERP or any of its subsidiaries is required to 
          own or possess any trademarks, service marks, trade names or 
          copyrights to conduct the business now operated by it, other than 
          those the failure to possess or own would not have a material adverse 
          effect on the condition, financial or otherwise, or the earnings, 
          assets, business affairs or business prospects of ERP and its 
          subsidiaries considered as a single enterprise.

               (xvii) No authorization, approval or consent of any court or
          governmental authority or agency is required that has not been
          obtained in connection with the consummation by ERP of the
          transactions contemplated by this Agreement, the applicable Terms
          Agreement or the Indenture, except such as may be required under the
          1933 Act, the 1939 Act or the 1933 Act Regulations or state securities
          law.

               (xviii) Each of ERP and its subsidiaries has all consents,
          authorizations, approvals, orders, certificates and permits of and
          from, and has made all declarations and filings with, all federal,
          state, local and other governmental authorities, all self-regulatory
          organizations and all courts and other tribunals required for it to
          own, lease, license and use its properties and assets and to conduct
          its business in the manner described in the Registration Statement and
          the Prospectus, except to the extent that the failure to obtain or
          file would not nave a material adverse effect on the condition,
          financial or otherwise, or the earnings, assets, business affairs or
          business prospects of ERP and its subsidiaries, considered as a single
          enterprise, and none of ERP or any of its subsidiaries has received
          any written notice of proceedings relating to the revocation or
          modification of any such consent, authorization, approval, order,
          certificate or permit which, singly or in the aggregate, if the
          subject of an unfavorable decision, ruling or finding, would
          materially and adversely affect the condition, financial or otherwise,
          or the earnings, assets, business affairs or business prospects of ERP
          and its subsidiaries, considered as a single enterprise.

               (xix)  The documents incorporated or deemed to be incorporated 
          by reference in the Prospectus, at the time they were or hereafter are

                                      -8-

<PAGE>

          filed with the Commission, complied and will comply in all material
          respects with the requirements of the 1934 Act and the rules and
          regulations of the Commission under the 1934 Act (the "1934 Act
          Regulations"), and, when read together with the other information in
          the Prospectus, at the time the Registration Statement became
          effective and as of each Representation Date or during the period
          specified in Section 3(f), did not and will not include an untrue
          statement of a material fact or omit to state a material fact required
          to be stated therein or necessary to make the statements therein, in
          the light of the circumstances under which they were made, not
          misleading.

               (xx)   Each of ERP and its subsidiaries is insured by 
          insurers of recognized financial responsibility against such losses 
          and risks and in such amounts as are prudent and customary in the 
          businesses in which they are engaged; and ERP has no reason to 
          believe that it or any of its subsidiaries will not be able to renew 
          its existing insurance coverage as and when such coverage expires or 
          to obtain similar coverage from similar insurers as may be necessary 
          to continue its businesses at a cost that would not materially and 
          adversely affect the condition, financial or otherwise, or the 
          earnings, assets, business affairs or business prospects of ERP and 
          its subsidiaries, considered as a single enterprise, except as 
          described in or contemplated by the Registration Statement and the 
          Prospectus.

               (xxi)  None of ERP or any of its subsidiaries is in violation 
          of its partnership agreement, limited liability company agreement,
          charter documents or bylaws or in default in the performance of any
          material obligation, agreement or condition contained in any contract,
          indenture, mortgage, loan agreement, note, lease or other instrument
          to which it or any of them is a party or by which it or any of them
          may be bound, or to which any of their properties or assets is
          subject, which default in performance would materially and adversely
          affect the condition, financial or otherwise, or the earnings, assets,
          business affairs or business prospects of ERP and its subsidiaries,
          considered as a single enterprise; and the execution, delivery and
          performance of this Agreement, the applicable Terms Agreement or the
          Indenture and the consummation of the transactions contemplated herein
          and therein, including the issuance, sale and delivery of the
          Underwritten Securities, will not conflict with or constitute a breach
          of, or default under, or result in the creation or imposition of any
          lien, charge or encumbrance upon any property or assets of ERP or any
          of its subsidiaries, pursuant to any contract, indenture, mortgage,
          loan agreement, note, lease or other instrument to which ERP or any of
          its subsidiaries is a party or by which it or any of them may be bound
          or 

                                      -9-

<PAGE>

          affected, or to which any of their properties or assets is subject,
          nor will such action result in any violation of the provisions of the
          partnership agreement or charter of bylaws of ERP or any of its
          subsidiaries, or any applicable law, regulation, ruling, order,
          judgment, administrative regulation or administrative or court decree.

               (xxii) ERP has not taken and will not take, directly or
          indirectly, any action prohibited by Rule 10b-6 under the 1934 Act.

               (xxiii)     The assets of ERP do not constitute "plan assets"
          under the Employee Retirement Income Security Act of 1974, as amended.

               (xxiv) Except as otherwise described in the Prospectus, each of
          ERP and its subsidiaries has good and marketable title in fee simple
          to all real property and good and marketable title to all personal
          property owned by it which is material to the business of ERP and its
          subsidiaries, considered as a single enterprise, in each case free and
          clear of all liens, claims, encumbrances and defects except such as
          are described in general in the Prospectus or such as do not
          materially serially affect the value of such property and do not
          interfere with the use made and proposed to be made of such property
          by ERP or any of its subsidiaries; and any real property and buildings
          held under lease by ERP and any of its subsidiaries are held by them
          under valid, subsisting and enforceable leases with such exceptions as
          are not material and do not interfere with the use made and proposed
          to be made of such property and buildings by ERP or such subsidiaries,
          in each case except as described in or contemplated by the
          Registration Statement and the Prospectus.

               (xxv)    Each of ERP and its subsidiaries has obtained title
          insurance on all of the properties owned by each of them in an amount
          at least equal to (A) the cost of acquisition of such property or (B)
          the cost of construction of such property, and in each case such title
          insurance is in full force and effect.

               (xxvi)   The mortgages and deeds of trust encumbering the
          properties and assets described in general in the Prospectus are not
          convertible and none of ERP or any of its subsidiaries holds
          participating interests therein and such mortgages and deeds of trust
          are not cross-defaulted or cross-collateralized to any property not
          owned by ERP or any of its subsidiaries.

               (xxvii)  Each of the partnership agreements and limited liability
          company agreements to which any of ERP or its subsidiaries is a party
          has been duly authorized, executed and delivered by such party and

                                      -10-

<PAGE>

          constitutes the valid agreement thereof, enforceable in accordance 
          with its terms, except as (A) the enforceability thereof may be 
          limited by bankruptcy, insolvency, reorganization, moratorium or 
          similar laws affecting creditors' rights generally and (B) the 
          availability of equitable remedies may be limited by equitable 
          principles of general applicability; and the execution, delivery 
          and performance of any of such agreements did not, at the time of 
          execution and delivery, and does not constitute a breach of, or 
          default under, the partnership agreement, charter, bylaws or other 
          governing documents of such party or any material contract, lease 
          or other instrument to which such party is a party or by which its 
          properties may be bound or any law, administrative regulation or 
          administrative or court decree.

               (xxviii) (a)  Except as disclosed in the Prospectus, each of 
          ERP and its subsidiaries has complied and is in compliance in all 
          material respects with all Environmental Statutes (as hereinafter 
          defined).

                        (b) None of ERP or any of its subsidiaries intends to 
          use the properties or assets described in the Prospectus or any 
          other real property for the purpose of handling, burying, storing, 
          retaining, refining, transporting, processing, manufacturing, 
          generating, producing, spilling, seeping, leaking, escaping, 
          leaching, pumping, pouring, emitting, emptying, discharging, 
          injecting, dumping, transferring or otherwise disposing of or 
          dealing with Hazardous Materials, except for materials utilized in 
          the ordinary course of business of the properties, provided such 
          use would not, in the ordinary course of business, give rise to 
          liability under any Environmental Statute.

                        (c) Except as disclosed in the Prospectus, none of 
          ERP or any of its subsidiaries knows (after due inquiry) of any 
          release, seepage, leak, escape, leach, discharge, injection, 
          release, emission, spill, pumping, pouring, emptying or dumping 
          ("Release") of Hazardous Materials (i) into waters on, under or 
          adjacent to the properties described in the Prospectus or (ii) on 
          any other real property owned or occupied by any such party, or 
          (iii) onto lands from which Hazardous Materials are likely to seep, 
          flow or drain into such waters, except for such Releases as would 
          not, individually or in the aggregate, have a material adverse 
          effect on the condition, financial or otherwise, earnings, business 
          affairs or business prospects of any of such properties.

                        (d) Except as disclosed in the Prospectus, none of 
          ERP or any of its subsidiaries has received any notice of, or has 
          any knowledge (after due inquiry) of any occurrence or circumstance 
          which,

                                      -11-
<PAGE>

          with notice or passage of time or both, would give rise to a claim 
          under or pursuant to any Environmental Statute or under common law, 
          pertaining to Hazardous Materials on or originating from any 
          properties or assets described in the Prospectus or any other real 
          property owned or occupied by any such party or arising out of the 
          conduct of any such party, except such occurrence or circumstance 
          as would not, individually or in the aggregate, have a material 
          adverse effect on the condition, financial or otherwise, earnings, 
          assets, business affairs or business prospects of any of such 
          properties.

                        (e) Neither the properties described in the Prospectus
          nor any other land owned by ERP or any of its subsidiaries is included
          or, to ERP's knowledge (after due inquiry), proposed for inclusion on
          the National Priorities List issued pursuant to CERCLA (as hereinafter
          defined) by the United States Environmental Protection Agency (the
          "EPA") or on the inventory of other potential "Problem" sites issued
          by the EPA and has not otherwise been publicly identified by the EPA
          as a potential CERCLA site or included or, to ERP's knowledge,
          proposed for inclusion on any list or inventory issued or maintained
          pursuant to any other Environmental Statute or issued or maintained by
          any other Governmental Authority (as hereinafter defined).

                        As used herein, "Hazardous Material" shall include 
          without limitation any flammable explosives, radioactive materials, 
          hazardous materials, hazardous wastes, toxic substances, asbestos, 
          medical waste or any hazardous material as defined by any 
          Environmental Statute.  As used herein, "Environmental Statute" 
          shall include any federal, state or local environmental law, 
          ordinance, rule or regulation including without limitation the 
          Comprehensive Environmental Response, Compensation, and Liability 
          Act of 1980, as amended, 42 U.S.C. Sections 9601 ET SEQ. 
          ("CERCLA"), the Hazardous Materials Transportation Act, as amended, 
          49 U.S.C. Sections 1801 ET SEQ., the Resource Conservation and 
          Recovery Act, as amended, 42 U.S.C. Sections  9601 ET SEQ., the 
          Emergency Planning and Community Right-to-Know Act of 1986, 42 
          U.S.C. Sections 11001 ET SEQ., the Toxic Substances Control Act, 15 
          U.S.C. Sections 2601 ET SEQ., the Federal Insecticide, Fungicide 
          and Rodenticide Act, 7 U.S.C. Sections 136 ET SEQ., the Clean Air 
          Act, 42 U.S.C. Sections 7401 ET SEQ., the Clean Water Act (Federal 
          Water Pollution Control Act), 33 U.S.C. Sections 1251 ET SEQ., the 
          Safe Drinking Water Act, 42 U.S.C. Sections 300f - 300j-11, and the 
          Occupational Safety and Health Act, 29 U.S.C. Sections 651 ET SEQ., 
          as any of the above statutes may be amended from time to time, and 
          the state analogues to those statutes, and in the regulations 
          adopted and publications promulgated pursuant to any of the 
          foregoing or by any federal, state or local 

                                      -12-
<PAGE>

          governmental authority having jurisdiction over the properties and 
          assets described in the Prospectus (a "Governmental Authority").

               (xxix)   Neither ERP nor any subsidiary is, or as a result of 
          the transactions contemplated by the Prospectus would be, required 
          to make any filing or to register under the Investment Company Act 
          of 1940, as amended, or is or will become a "holding company" or a 
          "subsidiary company" of a "registered holding company," as defined 
          in the Public Utility Holding Company Act of 1930, as amended.

               (xxx)    No labor dispute with the employees of ERP, or any of 
          ERP's subsidiaries exists, or to the knowledge of ERP, is imminent.

          (b)  Any certificate signed by any officer of ERP (or any officer 
of EQR) or of any subsidiary and delivered to you or to counsel for the 
Underwriters shall be deemed a representation and warranty by ERP or such 
subsidiary to each Underwriter participating in such offering as to the 
matters covered thereby on the date of such certificate and, unless 
subsequently amended or supplemented, at each Representation Date subsequent 
thereto.

          Section 2.       PURCHASE AND SALE.

          (a)  The several commitments of the Underwriters to purchase the 
Underwritten Securities pursuant to the applicable Terms Agreement shall be 
deemed to have been made on the basis of the representations and warranties 
herein contained and shall be subject to the terms and conditions set forth 
herein or in the applicable Terms Agreement.

          (b)  In addition, on the basis of the representations and 
warranties herein contained and subject to the terms and conditions herein 
set forth, ERP may grant, if so provided in the applicable Terms Agreement 
relating to the Initial Underwritten Securities, an option to the 
Underwriters named in such Terms Agreement, severally and not jointly, to 
purchase up to the aggregate principal amount of Option Securities set forth 
therein at the same price per Option Security as is applicable to the Initial 
Underwritten Securities.  Such option, if granted, will expire 30 days or 
such lesser number of days as may be specified in the applicable Terms 
Agreement after the Representation Date relating to the Initial Underwritten 
Securities, and may be exercised in whole or in part from time to time only 
for the purpose of covering over-allotments which may be made in connection 
with the offering and distribution of the Initial Underwritten Securities 
upon notice by you to ERP setting forth the aggregate principal amount of 
Option Securities as to which the several Underwriters are then exercising 
the option and the time and date of payment and delivery for such Option 
Securities.  Any such time and date of payment and delivery (a "Date of 
Delivery") shall be determined by you, but shall not be later than seven full 
business days and not be earlier than two full business 

                                      -13-
<PAGE>


days after the exercise of said option, unless otherwise agreed upon by you 
and ERP.  If the option is exercised as to all or nay portion of the Option 
Securities, each of the Underwriters, acting severally and not jointly, will 
purchase that proportion of the total aggregate principal amount of Option 
Securities then being purchased which the aggregate principal amount of 
Initial Underwritten Securities each such Underwriter has agreed to purchase 
as set forth in the applicable Terms Agreement bears to the total aggregate 
principal amount of Initial Underwritten Securities, subject to such 
adjustments as you in your discretion shall make to eliminate any sales or 
purchases of fractional Underwritten Securities.

          (c)  Payment of the purchase price for, and delivery of, the 
Underwritten Securities to be purchased by the Underwriters shall be made at 
the office of J.P. Morgan Securities Inc. ("J.P. Morgan"), at J.P. Morgan 
Securities Inc., 60 Wall Street, New York, New York  10260, or at such other 
place as shall be agreed upon by you and ERP, at 10:00 A M., New York City 
time, on the fifth business day (unless postponed in accordance with the 
provisions of Section 10) following the date of the applicable Terms 
Agreement or at such other time as shall be agreed upon by you and ERP (each 
such time and date being referred to as a "Closing Time").  In addition, if 
any or all of the Option Securities are purchased by the Underwriters, 
payment of the purchase price for, and delivery of certificates representing, 
such Option Securities, shall be made at the above-mentioned offices of J.P. 
Morgan, or at such other place as shall be agreed upon by you and ERP on each 
Date of Delivery as specified in the notice from you to ERP.  Unless 
otherwise specified in the applicable Terms Agreement, payment shall be made 
to ERP by certified or official bank check or checks in Federal or similar 
same-day funds payable to the order of ERP against delivery to you for the 
respective accounts of the Underwriters of the Underwritten Securities to be 
purchased by them.  The Underwritten Securities shall be in such authorized 
denominations and registered in such names as you may request in writing at 
least two business days prior to the applicable Closing Time or Date of 
Delivery, as the case may be.  The Underwritten Securities, which may be in 
temporary form, will be made available for examination and packaging by you 
on or before the first business day prior to the applicable Closing Time or 
Date of Delivery, as the case may be.

          If authorized by the applicable Terms Agreement, the Underwriters 
named therein may solicit offers to purchase Underwritten Securities from ERP 
pursuant to delayed delivery contracts ("Delayed Delivery Contracts") 
substantially in the form of Exhibit B hereto with such changes therein as 
ERP may approve.  As compensation for arranging Delayed Delivery Contracts, 
ERP will pay to you at Closing Time, for the respective accounts of the 
Underwriters, a fee equal to that percentage of the principal amount of 
Underwritten Securities for which Delayed Delivery contracts are made at the 
applicable Closing Time as is specified in the applicable Terms Agreement.  
Any Delayed Delivery Contracts are to be with institutional investors of the 
types described in the Prospectus. At the applicable Closing Time, ERP will 
enter into Delayed Delivery Contracts (for not less than the 

                                      -14-
<PAGE>

minimum principal amount of Underwritten Securities per Delayed Delivery 
Contract specified in the applicable Terms Agreement) with all purchasers 
proposed by the Underwriters and previously approved by ERP as provided 
below, but not for an aggregate principal amount of Underwritten Securities 
in excess of that specified in the applicable Terms Agreement.  The 
Underwriters will not have any responsibility for the validity or performance 
of Delayed Delivery Contracts.

          You shall submit to ERP, at least three business days prior to the 
applicable Closing Time, the names of any institutional investors with which 
it is proposed that ERP will enter into Delayed Delivery Contracts and the 
principal amount of Underwritten Securities to be purchased by each of them, 
and ERP will advise you, at least two business days prior to the applicable 
Closing Time, of the names of the institutions with which the making of 
Delayed Delivery Contracts is approved by ERP and the principal amount of 
Underwritten Securities to be covered by each such Delayed Delivery Contract.

          The principal amount of Underwritten Securities agreed to be 
purchased by the several Underwriters pursuant to the applicable Terms 
Agreement shall be reduced by the principal amount of Underwritten Securities 
covered by Delayed Delivery Contracts, as to each Underwriter as set forth in 
a written notice delivered by you to ERP; provided, however, that the total 
principal amount of Underwritten Securities to be purchased by all 
Underwriters shall be the total amount of Underwritten Securities covered by 
the applicable Terms Agreement, less the principal amount of Underwritten 
Securities covered by Delayed Delivery contracts.

          Section 3.  COVENANTS.

     
          ERP covenants with you, and with each Underwriter participating in 
the offering of Underwritten Securities, as follows.

          (a)  Immediately following the execution of the applicable Terms 
Agreement, ERP will prepare a Prospectus Supplement setting forth the 
principal amount of Underwritten Securities covered thereby and their terms 
not otherwise specified in the Prospectus or the Indenture pursuant to which 
the Underwritten Securities are being issued, the names of the Underwriters 
participating in the offering and the principal amount of Underwritten 
Securities which each severally has agreed to purchase, the names of the 
Underwriters acting as co-managers in connection with the offering, the price 
at which the Underwritten Securities are to be purchased by the Underwriters 
from ERP, the initial public offering price, if any, the selling concession 
and reallowance, if any, any delayed delivery arrangements, and such other 
information as you and ERP deem appropriate in connection with the offering 
of the Underwritten Securities; and ERP will promptly transmit copies of the 
Prospectus Supplement to the Commission for filing pursuant to Rule 424(b) of 
the 1933 Act Regulations within the time period required by such Rule and 
will 

                                      -15-
<PAGE>

furnish to the Underwriters named therein as many copies of the Prospectus 
and such Prospectus Supplement as you shall reasonably request.  If, at the 
time that the Registration Statement becomes effective, any information shall 
have been omitted therefrom in reliance upon Rule 430A of the 1933 Act 
Regulations, then immediately following execution of the applicable Terms 
Agreement, ERP will prepare, and file or transmit for filing with the 
Commission in accordance with such Rule 430A and Rule 424(b) of the 1933 Act 
Regulations, copies of an amended Prospectus or, if required by such Rule 
430A, a post-effective amendment to the Registration Statement (including an 
amended Prospectus), including all information so omitted.

          (b)  ERP will notify you immediately, and confirm such notice in 
writing, of (i) the effectiveness of the Registration Statement and any 
amendment thereto, (ii) the transmittal to the Commission for filing of any 
Prospectus Supplement or other supplement or amendment to the Prospectus or 
any document to be filed pursuant to the 1934 Act, (iii) the receipt of any 
comments from the Commission, (iv) any request by the Commission for any 
amendment to the Registration Statement or any amendment or supplement to the 
Prospectus or for additional information, and (v) the issuance by the 
Commission of any stop order suspending the effectiveness of the Registration 
Statement or the initiation of any proceedings for that purpose; and ERP will 
make every reasonable effort to prevent the issuance of any such stop order 
and, if any stop order is issued, to obtain the lifting thereof at the 
earliest possible moment.

          (c)  At any time when the Prospectus is required to be delivered 
under the 1933 Act or the 1934 Act in connection with sales of the 
Underwritten Securities, ERP will give you notice of its intention to file or 
prepare any amendment to the Registration Statement or any amendment or 
supplement to the Prospectus (including any revised prospectus which ERP 
proposes for use by you in connection with the offering of Underwritten 
Securities which differs from the Prospectus on file at the Commission at the 
time the Registration Statement becomes effective, whether or not such 
revised prospectus is required to be filed pursuant to Rule 424(b) of the 
1933 Act Regulations), whether pursuant to the 1933 Act, 1934 Act or 
otherwise, and will furnish you with copies of any such amendment or 
supplement a reasonable amount of time prior to such proposed filing or 
preparation, as the case may be, and will not file or prepare any such 
amendment or supplement or other documents in a form to which you or counsel 
for the Underwriters shall reasonably object.

          (d)  ERP will deliver to you as many signed and conformed copies of 
the Registration Statement as originally filed and of each amendment thereto 
(including exhibits filed therewith or incorporated by reference therein and 
documents incorporated or deemed to be incorporated by reference therein) as 
you reasonably request.

                                      -16-
<PAGE>


          (e)  ERP will furnish to each Underwriter, from time to time during 
the period when the Prospectus is required to be delivered under the 1933 Act 
or the 1934 Act in connection with sales of the Underwritten Securities, such 
number of copies of the Prospectus (as amended or supplemented) as such 
Underwriter may reasonably request for the purposes contemplated by the 1933 
Act, the 1933 Act Regulations, the 1934 Act or the 1934 Act Regulations.

          (f)  If at any time when the Prospectus is required to be delivered 
under the 1933 Act or the 1934 Act in connection with sales of the 
Underwritten Securities any event shall occur or condition exist as a result 
of which it is necessary, in the opinion of counsel for the Underwriters or 
counsel for ERP, to amend or supplement the Prospectus in order that the 
Prospectus will not include an untrue statement of a material fact or omit to 
state any material fact necessary in order to make the statements therein not 
misleading in the light of the circumstances existing at the time it is 
delivered to a purchaser, or if it shall be necessary, in the opinion of 
either such counsel, at any such time to amend or supplement the Registration 
Statement or the Prospectus in order to comply with the requirements of the 
1933 Act or the 1933 Act Regulations, then ERP will promptly prepare and file 
with the Commission such amendment or supplement in form and substance 
reasonably satisfactory to counsel for the Underwriters, whether by filing 
documents pursuant to the 1933 Act, the 1934 Act or otherwise, as may be 
necessary to correct such untrue statement or omission or to make the 
Registration Statement and Prospectus comply with such requirements.

          (g)  ERP will endeavor, in cooperation with the Underwriters, to 
qualify the Underwritten Securities for offering and sale under the 
applicable securities laws and real estate syndication laws of such states 
and other jurisdictions of the United States as you may designate; provided, 
however, that ERP shall not be obligated to (i) qualify as a foreign limited 
partnership in any jurisdiction where it is not so qualified, (ii) file any 
general consent to service of process or (iii) take any action that would 
subject it to income taxation in any such jurisdiction.  In each jurisdiction 
in which the Underwritten Securities have been so qualified, ERP will file 
such statements and reports as may be required by the laws of such 
jurisdiction to continue such qualification in effect for so long as may be 
required for the distribution of the Underwritten Securities.

          (h)  With respect to each sale of Underwritten Securities, ERP will 
make generally available to its security holders as soon as practicable, but 
not later than 90 days after the close of the period covered thereby, an 
earning statement (in form complying with the provisions of Rule 158 of the 
1933 Act Regulations) covering a 12-month period beginning not later than the 
first day of ERP's fiscal quarter next following the "effective date" (as 
defined in such Rule 158) of the Registration Statement.

                                      -17-
<PAGE>

          (i)  ERP, during the period when the Prospectus is required to be 
delivered under the 1933 Act or the 1934 Act in connection with sales of the 
Underwritten Securities, will file all documents required to be filed with 
the Commission pursuant to Section 13, 14 or 15 of the 1934 Act within the 
time periods prescribed by the 1934 Act and the 1934 Act Regulations.

          (j)  ERP will not, between the date of the applicable Terms 
Agreement and the termination of any trading restrictions or the applicable 
Closing Time, whichever is later, with respect to the Underwritten Securities 
covered thereby, without your prior written consent, offer or sell, grant any 
option for the sale of, or enter into any agreement to sell, any debt 
securities of ERP with a maturity of more than one year (other than the 
Underwritten Securities which are to be sold pursuant to such Terms 
Agreement), except as may otherwise be provided in the applicable Terms 
Agreement.

          (k)  ERP will take all reasonable action necessary to enable 
Standard & Poor's Corporation ("S&P") and Moody's Investors Service, Inc. 
("Moody's") to provide their respective credit ratings of any Underwritten 
Securities, if applicable.

          Section 4.  PAYMENT OF EXPENSES.

          ERP will pay all expenses incident to the performance of its 
obligations under this Agreement or the applicable Terms Agreement, including 
(i) the printing and filing of the Registration Statement as originally filed 
and of each amendment thereto, (ii) the printing and filing of this Agreement 
and the applicable Terms Agreement, (iii) the preparation, issuance and 
delivery of the Underwritten Securities to the Underwriters, (iv) the fees 
and disbursements of ERP's counsel and accountants, (v) the qualification of 
the Underwritten Securities under securities laws and real estate syndication 
laws in accordance with the provisions of Section 3(g), including filing fees 
and the fees and disbursements of counsel for the Underwriters in connection 
therewith and in connection with the preparation of the Blue Sky Survey, (vi) 
the printing and delivery to the Underwriters of copies of the Registration 
Statement as originally filed and of each amendment thereto, and of the 
Prospectus and any amendments or supplements thereto, (vii) the printing and 
delivery to the Underwriters of copies of the Indenture, (viii) any fees 
charged by nationally recognized statistical rating organizations for the 
rating of the Underwritten Securities, (ix) the fees and expenses, if any, 
incurred with respect to the listing of the Underwritten Securities on any 
national securities exchange or quotation system, (x) the fees and expenses, 
if any, incurred with respect to any filing with the National Association of 
Securities Dealers, Inc., (xi) the fees and expenses of the Trustee, and (xi) 
the preparation, issuance and delivery to the Depository Trust Company for 
credit to your account of any global note registered in the name of Cede & 
Co., as nominee for the Depository Trust Company.

                                      -18-
<PAGE>

          If the applicable Terms Agreement is terminated by you in 
accordance with the provisions of Section 5 or Section 9(b)(i) or 9(b)(iv), 
ERP shall reimburse the Underwriters named in such Terms Agreement for all of 
their out-of-pocket expenses, including the reasonable fees and disbursements 
of counsel for the Underwriters.

          Section 5.  CONDITIONS OF UNDERWRITERS' OBLIGATIONS.

     
          The several obligations of the Underwriters to purchase 
Underwritten Securities pursuant to the applicable Terms Agreement are 
subject to the accuracy of the representations and warranties of ERP herein 
contained, to the accuracy of the statements of officers of ERP and EQR made 
in any certificate pursuant to the provisions hereof, to the performance by 
ERP of all of its covenants and other obligations hereunder, and to the 
following further conditions:

          (a)  At the applicable Closing Time, (i) no stop order suspending 
the effectiveness of the Registration Statement shall have been issued under 
the 1933 Act or proceedings therefor initiated or threatened by the 
Commission, (ii) if ERP has elected to rely upon Rule 430A of the 1933 Act 
Regulations, the public offering price of the Underwritten Securities and any 
price-related information previously omitted from the effective Registration 
Statement pursuant to such Rule 430A shall have been transmitted to the 
Commission for filing pursuant to Rule 424(b) of the 1933 Act Regulations 
within the prescribed time period, and prior to the applicable Closing Time, 
ERP shall have provided evidence satisfactory to you of such timely filing, 
or a post-effective amendment providing such information shall have been 
promptly filed and declared effective in accordance with the requirements of 
Rule 430A of the 1933 Act Regulations, (iii) the rating assigned by any 
nationally recognized statistical rating organization to any long-term debt 
securities of ERP as of the date of the applicable Terms Agreement shall not 
have been lowered since such date nor shall any such rating organization have 
publicly announced that it has placed any long-term debt securities of ERP on 
what is commonly termed a "watch list" for possible downgrading, and (iv) 
there shall not have come to your attention any facts that would cause you to 
believe that the Prospectus, together with the applicable Prospectus 
Supplement, at the time it was required to be delivered to purchasers of the 
Underwritten Securities, included an untrue statement of a material fact or 
omitted to state a material fact necessary in order to make the statements 
therein, in light of the circumstances existing at such time, not misleading.

          (b)  At the applicable Closing Time, you shall have received:

               (1)    The favorable opinion, dated as of the applicable 
Closing Time, of Rosenberg & Liebentritt, P.C., counsel for ERP, in form and 
substance satisfactory to counsel for the Underwriters, to the effect that:

                                      -19-
<PAGE>

          (i)    ERP has been duly formed and is validly existing and in good 
     standing under the Illinois Revised Uniform Limited Partnership Act, and 
     has the power and authority to own, lease and operate its properties and 
     conduct its business as described in the Prospectus, and, to counsel's 
     knowledge, is duly qualified and in good standing and authorized to 
     transact business in any jurisdiction in which the conduct of its 
     business or its ownership or leasing of property requires such 
     qualification, except where the failure to be so qualified or in good 
     standing will not have a material adverse effect on ERP's condition, 
     financial or otherwise, earnings, assets, business affairs or business 
     prospects.
          
          (ii)   Each of ERP's subsidiaries has been duly formed and is 
     validly existing and in good standing under the laws of the jurisdiction 
     of its formation, has the power and authority to own, lease and operate 
     its properties and to conduct its business as described in the 
     Prospectus, and, to counsel's knowledge, is duly qualified and in good 
     standing and authorized to transact business in any jurisdiction in 
     which the conduct of its business or its ownership or leasing of 
     property requires such qualification, except where the failure to be so 
     qualified or in good standing will not have a material adverse effect on 
     such subsidiary's condition, financial or otherwise, earnings, assets, 
     business affairs or business prospects; all of the issued and 
     outstanding shares of capital stock, limited liability company interests 
     and partnership interests of each subsidiary have been duly authorized 
     and validly issued, are fully paid and, with respect to the shares of 
     capital stock, limited liability company interests and partnership 
     interests owned by ERP, to such counsel's knowledge, are owned, 
     directly, free and clear of any security interest, mortgage, pledge, 
     lien, encumbrance, claim or equity.
          
          (iii)  The Indenture has been duly qualified under the 1939 Act and 
     has been duly authorized, executed and delivered by ERP and (assuming 
     due authorization, execution and delivery by the Trustee) constitutes 
     the valid and binding obligation of ERP enforceable against ERP in 
     accordance with its terms, subject to applicable bankruptcy, insolvency, 
     reorganization, moratorium, fraudulent transfer, or similar laws 
     affecting creditors' rights generally from time to time in effect and 
     general principles of equity (regardless of whether such enforceability 
     is considered in a proceeding at law or in equity) and except that a 
     waiver of rights under any usury law may be unenforceable.
          
          (iv)   The Underwritten Securities have been duly and validly 
     authorized by all necessary action and, when executed, authenticated and 
     delivered in accordance with the Indenture and against payment 

                                       -20-
<PAGE>

     therefor specified in the applicable Terms Agreement or the Delayed 
     Delivery Contracts, if any, will be entitled to the benefits of the 
     Indenture and will be valid and legally binding obligations of ERP 
     enforceable against ERP in accordance with their terms, subject to 
     applicable bankruptcy, insolvency, reorganization, moratorium, 
     fraudulent transfer, or similar laws affecting creditors' rights 
     generally from time to time in effect and general principles of equity 
     (regardless of whether such enforceability is considered in a proceeding 
     at law or in equity) and except that a waiver of rights under any usury 
     law may be unenforceable.
          
          (v)    Each of this Agreement, the applicable Terms Agreement and 
     the Delayed Delivery Contracts, if any, has been duly and validly 
     authorized, executed and delivered by ERP, and ERP has the power and 
     authority to perform its obligations hereunder and thereunder.
          
          (vi)   The execution and delivery by ERP of, and the performance by 
     ERP of its obligations under, this Agreement, the applicable Terms 
     Agreement, the Indenture and the Underwritten Securities and the 
     consummation of the transactions contemplated hereunder and thereunder 
     will not contravene any provision of applicable law, administrative 
     regulation or administrative or court decree, or the partnership 
     agreement, limited liability company agreement or charter or bylaws of 
     ERP or any subsidiary and will not, to such counsel's knowledge, 
     conflict with or constitute a breach of, or default under, or result in 
     the creation or imposition of any lien, charge or encumbrance upon any 
     property or assets of ERP or any of its subsidiaries pursuant to any 
     agreement or other instrument that is binding upon ERP or any 
     subsidiary, or to which any of their properties or assets is subject.
          
          (vii)  The Registration Statement is effective under the 1933 Act 
     and, to such counsel's knowledge and information, no stop order 
     suspending the effectiveness of the Registration Statement has been 
     issued under the 1933 Act or proceedings therefor initiated or 
     threatened by the Commission.
          
          (viii) The Underwritten Securities and the Indenture conform in all 
     material respects to the descriptions thereof contained in the 
     Prospectus.
          
          (ix)   No consent, approval, authorization, or order of, or 
     qualification with, any governmental body or agency and no consent, 
     approval, or authorization of any person other than ERP is required for 

                                       -21-
<PAGE>

     the performance by ERP of its obligations under this Agreement, the 
     applicable Terms Agreement, the Indenture or the Underwritten 
     Securities, except such as may be required under the 1933 Act, the 1939 
     Act, and the securities or Blue Sky laws of various states in connection 
     with the offer and sale of the Underwritten Securities.
          
          (x)    There are no (A) legal or governmental proceedings pending 
     or, to the knowledge of such counsel, threatened which are required to 
     be disclosed in the Registration Statement, other than those disclosed 
     therein, and all pending legal or governmental proceedings to which ERP 
     or any of its subsidiaries is a party or to which any of their property 
     is subject which are not described in the Registration Statement, 
     including ordinary routine litigation incidental to the business, are, 
     considered in the aggregate, not material or (B) to counsel's knowledge, 
     statutes, regulations, contracts, indentures, mortgages, loan 
     agreements, notes, leases, instruments or other documents that are 
     required to be described in the Prospectus or to be filed as exhibits to 
     the Registration Statement that are not described or filed as required.
          
          (xi)   None of ERP, EQR or any of their subsidiaries is required to 
     be registered under the 1940 Act.
          
          (xii)  The information (A) in the Prospectus and applicable 
     Prospectus Supplement under the headings "Description of Debt 
     Securities," and "Underwriting" and (B) in ERP's most recent report on 
     Form 10-K or Form 10-Q, as the case may be, under the caption "Legal 
     Proceedings" to the extent that it constitutes matters of law, summaries 
     of legal matters, documents or proceedings, or legal conclusions, has 
     been reviewed by such counsel and is correct in all material respects.
          
          (xiii) The Registration Statement and Prospectus (except for 
     financial statements and schedules included therein, or the Statement of 
     Eligibility, as to which such counsel need not express any opinion), 
     excluding the documents incorporated by reference therein, as of their 
     respective effective or issue dates comply as to form in all material 
     respects with the requirements for registration statements on Form S-3 
     under the 1933 Act, the 1939 Act and the 1933 Act Regulations.

          (xiv)  To their knowledge, ERP and each of its subsidiaries has 
     consents, authorizations, approvals, orders, certificates and permits of 
     and from, and has made all declarations and filings with, all federal, 
     state, local, and other governmental authorities, all self-regulatory 
     organizations, and all courts and other tribunals, necessary to own, 

                                       -22-
<PAGE>

     lease, license and use its properties and assets and to conduct its 
     business in the manner described in the Registration Statement and the 
     Prospectus, except to the extent that the failure to obtain or file 
     would not have a material adverse effect on the condition, financial or 
     otherwise, or the earnings, assets, business affairs or business 
     prospects of ERP and its subsidiaries considered as a single enterprise.

          (xv)   To their knowledge, except as described in the Prospectus, 
     there are no outstanding rights, warrants or options to acquire, or 
     instruments convertible into or exchangeable for, or agreements or 
     understandings with respect to the sale or issuance of any shares of 
     capital stock of or other equity interest in ERP or any subsidiary of 
     ERP except for multifamily property acquisition agreements with respect 
     to the sale or issuance of OP Units which are not material in amount.

          (xvi)  Each document filed pursuant to the 1934 Act (other than the 
     financial statements, schedules and other financial and statistical 
     data, as to which no opinion need be rendered) and incorporated or 
     deemed to be incorporated by reference in the Prospectus complied when 
     so filed as to form in all material respects with the 1934 Act and the 
     1934 Act Regulations.

               (2)    The favorable opinion, dated as of the applicable 
Closing Time of Hogan & Hartson L.L.P., counsel for the Underwriters, 
substantially to the effect specified in subparagraphs (i) first clause only, 
(iii) excluding the first clause, (iv), (v) first clause only, (vii), 
(xii)(A) and (xiii) of Section 5(b)(1), and to the effect that ERP will be 
treated as a partnership for federal income tax purposes and not as an 
association taxable as a corporation whether or not treated as a publicly 
traded partnership within the meaning of Section 7704 of the Internal Revenue 
Code of 1986, as amended.

               (3)    In rendering their opinions required by subsections 
(b)(1) and (b)(2), respectively, of this Section 5, Rosenberg & Liebentritt, 
P.C. and Hogan & Hartson, L.L.P. shall each additionally state (which shall 
not constitute an opinion) that no facts have come to the attention of such 
counsel which cause them to believe that the Registration Statement or any 
amendment thereto (except for financial statements and supporting schedules 
and other financial and statistical information and data included therein or 
omitted therefrom, or the Statement of Eligibility, as to which such counsel 
need not express any view), as of the time it became effective under the 1933 
Act or at the time an Annual Report on Form 10-K was filed by ERP with the 
Commission (whichever is later), or at the date of the applicable Terms 
Agreement, contained an untrue statement of a material fact or omitted to 
state a material fact required to be stated therein or necessary to make the 
statements therein not misleading, or that the Prospectus or any amendment or 

                                       -23-
<PAGE>

supplement thereto (except as aforesaid) as of the date of the applicable 
Terms Agreement or at the applicable Closing Time, contained an untrue 
statement of a material fact or omitted to state a material fact required to 
be stated therein or necessary in order to make the statements therein, in 
light of the circumstances under which they were made, not misleading.  In 
giving their opinions required by this Section 5(b), such counsel, (A) may 
rely as to all matters of fact, upon certificates and written statements of 
officers and employees of and accountants for ERP, (B) may rely as to the 
qualification and good standing of each of ERP or any of its subsidiaries to 
do business in any state or jurisdiction, upon certificates of appropriate 
government officials or opinions of counsel in such jurisdictions, which 
opinions shall be in form and substance satisfactory to counsel for the 
Underwriters, and (C) may state that their opinion and belief are based upon 
their participation in the preparation of the Registration Statement and 
Prospectus and any amendments and supplements thereto and review and 
discussion of the contents thereof, but are without independent check or 
verification except as specified.

          (c)  At the applicable Closing Time, there shall not have been, 
since the date of the applicable Terms Agreement or since the respective 
dates as of which information is given in the Prospectus, any material 
adverse change in the condition, financial or otherwise, or in the earnings, 
assets, business affairs or business prospects of ERP and its subsidiaries 
considered as a single enterprise, whether or not arising in the ordinary 
course of business; and you shall have received a certificate of the Chief 
Executive Officer, the President or the chief financial or chief accounting 
officer of the general partner of ERP, dated as of such Closing Time, to the 
effect that (i) there has been no such material adverse change, (ii) the 
representations and warranties in Section 1 are true and correct with the 
same force and effect as though such Closing Time were a Representation Date 
and (iii) ERP has complied with all agreements and satisfied all conditions 
on its part to be performed or satisfied at or prior to Closing Time.  As 
used in this SECTION 5(c), the term "Prospectus" means the Prospectus in the 
form first used to confirm sales of the Underwritten Securities.

          (d)  At the time of execution of the applicable Terms Agreement, 
you shall have received from ERP's independent public accountants a letter 
dated such date, in form and substance satisfactory to you, to the effect 
that (i) they are independent accountants with respect to ERP and its 
subsidiaries within the meaning of the 1933 Act and the 1933 Act Regulations; 
(ii) it is their opinion that the consolidated financial statements and 
supporting schedules included or incorporated by reference in the 
Registration Statement and the Prospectus and covered by their opinions 
therein comply in form in all material respects with the applicable 
accounting requirements of the 1933 Act and the 1933 Act Regulations; (iii) 
based upon limited procedures set forth in detail in such letter, and except 
as otherwise set forth in such letter, nothing has come to their attention 
which causes them to believe that at a specified date not more than five days 
prior to the date of 

                                       -24-
<PAGE>

the applicable Terms Agreement, there has been any change in the partners' 
capital of ERP or in the consolidated long-term debt of ERP or any decrease 
in the net assets of ERP, as compared with the amounts shown in the most 
recent consolidated balance sheet included or incorporated by reference in 
the Registration Statement and the Prospectus or, during the period from the 
date of the most recent consolidated statement of operations included or 
incorporated by reference in the Registration Statement and the Prospectus to 
a specified date not more than five days prior to the date of the applicable 
Terms Agreement, there were any decreases, as compared with the corresponding 
period in the preceding year, in consolidated revenues, or decrease in net 
income or net income per weighted average OP Units outstanding of ERP, except 
in all instances for changes, increases or decreases which the Registration 
Statement and the Prospectus disclose have occurred or may occur; and (iv) in 
addition to the audit referred to in their opinions and the limited 
procedures referred to in clause (iii) above, they have carried out certain 
specified amounts, percentages and financial information which are included 
in the Registration Statement and the Prospectus and which are specified by 
you, and have found such amounts, percentages and financial information to be 
in agreement with relevant accounting, financial and other records of ERP and 
its subsidiaries identified in such letter.

          (e)  At the applicable Closing Time, you shall have received from 
ERP's independent public accountants a letter dated as of the applicable 
Closing Time to the effect that they reaffirm the statements made in the 
letter furnished pursuant to subsection (d) of this Section, except that the 
"specified date" referred to shall be a date not more than five days prior to 
the applicable Closing Time and, if ERP has elected to rely on Rule 430A of 
the 1933 Act Regulations, to the further effect that they have carried out 
procedures as specified in clause (iv) of subsection (d) of this Section with 
respect to certain amounts, percentages and financial information specified 
by you and deemed to be part of the Registration Statement pursuant to Rule 
430A(b) and have found such amounts, percentages and financial information to 
be in agreement with the records specified in such clause (iv).

          (f)  At the applicable Closing Time, counsel for the Underwriters 
shall have been furnished with such documents and opinions as they may 
reasonably require for the purpose of enabling them to pass upon the issuance 
and sale of the Underwritten Securities as herein contemplated and related 
proceedings, or in order to evidence the accuracy of any of the 
representations or warranties, or the fulfillment of any of the conditions, 
herein contained; and all proceedings taken by ERP in connection with the 
issuance and sale of the Underwritten Securities as herein contemplated shall 
be reasonably satisfactory in form and substance to you and counsel for the 
Underwriters.

          (g)  If the Underwriters exercise their option provided in a Terms 
Agreement as set forth in Section 2(b) hereof to purchase all or any portion 
of the Option Securities, the representations and warranties of ERP contained 
herein and 

                                       -25-
<PAGE>

the statements in any certificates furnished by ERP hereunder shall be true 
and correct as of each Date of Delivery, and you shall have received:

               (1)    A certificate, dated such Date of Delivery, of the 
Chief Executive Officer, the President or the chief financial or chief 
accounting officer of the general partner of ERP, in their capacities as 
such, confirming that the certificate delivered at Closing Time pursuant to 
Section 5(c) hereof remains true and correct as of such Date of Delivery.

               (2)    The favorable opinion of Rosenberg & Liebentritt, P.C., 
counsel for ERP, in form and substance satisfactory to counsel for the 
Underwriters, dated such Date of Delivery, relating to the Option Securities 
and otherwise substantially to the same effect as the opinions required by 
Section 5(b)(1) the belief required by Section 5(b)(3) hereof.

               (3)    The favorable opinion of Hogan & Hartson, L.L.P., 
counsel for the Underwriters, dated such Date of Delivery, relating to the 
Option Securities and otherwise to the same effect as the opinion required by 
Section 5(b)(2) and the belief required by Section 5(b)(3) hereof.

               (4)    A letter from the ERP's independent public accountants, 
in form and substance satisfactory to you and dated such Date of Delivery, 
substantially the same in scope and substance as the letter furnished to you 
pursuant to Section 5(d) hereof, except that the "specified date" in the 
letter furnished pursuant to this Section 5(g)(4) shall be a date not more 
than five days prior to such Date of Delivery.

          If any condition specified in this Section shall not have been 
fulfilled when and as required to be fulfilled, the applicable Terms 
Agreement may be terminated by you by notice to ERP at any time at or prior 
to the applicable Closing Time, and such termination shall be without 
liability of any party to any other party except as provided in Section 4 
hereof.

          Section 6.  INDEMNIFICATION.

          (a)  ERP hereby agrees to indemnify and hold harmless each 
Underwriter and each person, if any, who controls any Underwriter within the 
meaning of Section 15 of the 1933 Act, and any director, officer, employee or 
affiliate thereof, as follows:

               (i)    against any and all loss, liability, claim, damage and 
          expense whatsoever, as incurred, arising out of any untrue 
          statement or alleged untrue statement of a material fact contained 
          in the Registration Statement (or any amendment thereto), including 
          the information deemed to be part of the Registration Statement 
          pursuant to Rule 430A(b) of the 1933 Act Regulations, if 
          applicable, or the

                                       -26-
<PAGE>



          omission or alleged omission therefrom of a material fact required 
          to be stated therein or necessary to make the statements therein 
          not misleading or arising out of any untrue statement or alleged 
          untrue statement of a material fact contained in the Prospectus (or 
          any amendment or supplement thereto), or the omission, or alleged 
          omission therefrom of a material fact necessary in order to make 
          the statements therein, in the light of the circumstances under 
          which they never made, not misleading; provided, however, that ERP 
          shall not be required under this subsection (i) to indemnify the 
          Underwriter with respect to any loss, liability, claim, damage or 
          expense to the extent such loss, liability, claim, damage or 
          expense arises out of any untrue statement or omission or alleged 
          untrue statement or omission made in reliance upon and in 
          conformity with written information furnished to ERP by any 
          Underwriter through you expressly for use in the Registration 
          Statement (or any amendment thereto) and the Prospectus (or any 
          amendment or supplement thereto).

               (ii)   against any and all loss, liability, claim, damage and 
          expense whatsoever, as incurred, to the extent of the aggregate 
          amount paid in settlement of any litigation or of any investigation 
          or proceeding by any governmental agency or body, commenced or 
          threatened, or of any claim whatsoever for which indemnification is 
          provided under subsection (i) above, if such settlement is effected 
          with the written consent of ERP; and

               (iii)  against any and all expense whatsoever (including, 
          without limitation, the fees and other charges of counsel chosen by 
          you) reasonably incurred in investigating, preparing or defending 
          against any litigation, or any investigation or proceedings by any 
          governmental agency or body, commenced or threatened, or any claim 
          whatsoever for which indemnification is provided under subsection 
          (i) above, to the extent that any such expense is not paid under 
          (i) or (ii) above.

          (b)  Each Underwriter severally agrees to indemnify and hold 
harmless ERP, and each person, if any, who controls ERP within the meaning of 
Section 15 of the 1933 Act, and any director, officer, employee or affiliate 
thereof, against any and all loss, liability, claim, damage and expense 
described in the indemnity contained in subsection (a) of this Section 6, as 
incurred, but only with respect to untrue statements or omissions, or alleged 
untrue statements or omissions, made in the Registration Statement (or any 
amendment thereto) or the Prospectus (or any amendment or supplement thereto) 
in reliance upon and in conformity with written information furnished to ERP 
by any Underwriter through you expressly for use in the Registration 
Statement (or any amendment thereto) and the Prospectus (or any amendment or 
supplement thereto).

                                       -27-
<PAGE>

          (c)  Each indemnified party shall give notice as promptly as 
reasonably practicable to each indemnifying party of any action commenced 
against it in respect of which indemnity may be sought hereunder, but failure 
to so notify an indemnifying party shall not relieve such indemnifying party 
from any liability which it may have otherwise than on account of this 
indemnity agreement to the extent such indemnifying party was not materially 
prejudiced by such failure or otherwise than on account of this indemnity 
agreement.  An indemnifying party may participate at its own expense in the 
defense of such action.  If it so elects within a reasonable time after 
receipt of such notice, an indemnifying party, jointly with any other 
indemnifying parties receiving such notice, may assume the defense of such 
action with counsel chosen by it and approved by the indemnified parties 
defendant in such action, unless such indemnified parties reasonably object 
to such assumption on the ground that the named parties to any such action 
(including any impleaded parties) include both such indemnified parties and 
an indemnifying party, and such indemnified parties reasonably believe that 
there may be legal defenses available to them which are different from or in 
addition to those available to such indemnifying party.  If an indemnifying 
party assumes the defense of such action, the indemnifying parties shall not 
be liable for any fees and expenses of counsel for the indemnified parties 
incurred thereafter in connection with such action.  In no event shall the 
indemnifying parties be liable for fees and expenses of more than one counsel 
(in addition to any local counsel) separate from their own counsel for all 
indemnified parties in connection with any one action or separate but similar 
or related actions in the same jurisdiction arising out of the same general 
allegations or circumstances.

          Section 7.  CONTRIBUTION.

          In order to provide for just and equitable contribution in 
circumstances in which the indemnity agreement provided for in Section 6 
hereof is for any reason held to be unenforceable by the indemnified parties 
although applicable in accordance with its terms, ERP and the Underwriters 
with respect to the offering of the Underwritten Securities shall contribute 
to the aggregate losses, liabilities, claims, damages and expenses of the 
nature contemplated by said indemnity agreement incurred by ERP and one or 
more of the Underwriters in respect of such offering, as incurred, in such 
proportions that the Underwriters are responsible for that portion 
represented by the percentage that the underwriting discount appearing on the 
cover page of the applicable Prospectus Supplement in respect of such 
offering bears to the initial public offering price appearing thereon and ERP 
is responsible for the balance; provided, however, that no person guilty of 
fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933 
Act) shall be entitled to contribution from any person who was not guilty of 
such fraudulent misrepresentation. Notwithstanding the provisions of this 
Section 7, no Underwriter shall be required to contribute any amount in 
excess of the amount by which the total price at which the Underwritten 
Securities purchased by it pursuant to the applicable Terms Agreement and 
distributed to the public exceeds 

                                       -28-
<PAGE>

the amount of any damages such Underwriter has otherwise been required to pay 
in respect of such losses, liabilities, claims, damages and expenses.  For 
purposes of this Section 7, each person, if any, who controls an Underwriter 
within the meaning of Section 15 of the 1933 Act shall have the same rights 
to contribution as such Underwriter, and each director and each officer of 
ERP or EQR who signed the Registration Statement, and each person, if any, 
who controls ERP within the meaning of Section 15 of the 1933 Act and each 
director, officer, employee or affiliate thereof shall have the same rights 
to contribution as ERP.

          Section 8.  REPRESENTATIONS, WARRANTIES AND AGREEMENTS TO SURVIVE
                      DELIVERY.

          All representations, warranties and agreements included in this 
Agreement or the applicable Terms Agreement, or included in certificates of 
officers of ERP or EQR submitted pursuant hereto, shall remain operative and 
in full force and effect, regardless of any termination of this Agreement or 
the applicable Terms Agreement or investigation made by or on behalf of any 
Underwriter or any controlling person, or by or on behalf of ERP, and shall 
survive delivery of and payment for the Underwritten Securities until the 
obligations relating to all Underwritten Securities have been fully satisfied 
in accordance with their terms.

          Section 9.  TERMINATION OF AGREEMENT.

          (a)  This Agreement (excluding the applicable Terms Agreement) may 
be terminated for any reason at any time by ERP or by you upon the giving of 
30 days' written notice of such termination to the other party hereto.

          (b)  You may also terminate the applicable Terms Agreement, by 
notice to ERP, at any time at or prior to the applicable Closing Time (i) if 
there has been, since the date of such Terms Agreement or since the 
respective dates as of which information is given in the Prospectus, any 
material adverse change in the condition, financial or otherwise, or in the 
earnings, assets, business affairs or business prospects of ERP and its 
subsidiaries considered as a single enterprise, whether or not arising in the 
ordinary course of business, or (ii) if there has occurred any material 
adverse change in the financial markets in the United States or any outbreak 
of hostilities or other calamity or crisis or escalation of any existing 
hostilities, the effect of which is such as to make it, in your judgment, 
impracticable to market the Underwritten Securities or enforce contracts for 
the sale of the Underwritten Securities, or (iii) if trading in any of the 
securities of ERP or EQR has been suspended by the Commission on any exchange 
or any over-the-counter market, or if trading generally on either the New 
York Stock Exchange or the American Stock Exchange has been suspended, or 
minimum or maximum prices for trading have been fixed, or maximum ranges for 
prices for securities have been required, by either of said exchanges or by 
order of the Commission or any other governmental authority, or if a banking 
moratorium has been declared by Federal, 

                                       -29-
<PAGE>

Illinois or New York authorities, or (iv) if the rating assigned by any 
nationally recognized statistical rating organization to any long-term debt 
securities of ERP as of the date of the applicable Terms Agreement shall have 
been lowered since such date or if any such rating organization shall have 
publicly announced that it has placed any long-term debt securities of ERP on 
what is commonly termed a "watch list" for possible downgrading.  As used in 
this Section 9(b), the term "Prospectus" means the Prospectus in the form 
first used to confirm sales of the Underwritten Securities.

          (c)  In the event of any such termination, (x) the covenants set 
forth in Section 3 with respect to any offering of Underwritten Securities 
shall remain in effect so long as any Underwriter owns any such Underwritten 
Securities purchased from ERP pursuant to the applicable Terms Agreement and 
(y) the covenant set forth in Section 3(h) hereof, the provisions of Section 
4 hereof, the indemnity and contribution agreements set forth in Section G 
and 7 hereof, and the provisions of Sections 8 and 13 hereof shall remain in 
effect.

          Section 10. DEFAULT BY ONE OR MORE OF THE UNDERWRITERS.

          If one or more of the Underwriters shall fail at the applicable 
Closing Time to purchase the Underwritten Securities which it or they are 
obligated to purchase under the applicable Terms Agreement (the "Defaulted 
Securities"), then you shall have the right, within 24 hours thereafter, to 
make arrangements for one or more of the non-defaulting Underwriters, or any 
other underwriters, to purchase all, but not less than all, of the Defaulted 
Securities in such amounts as may be agreed upon and upon the terms herein 
set forth; if, however, you shall not have completed such arrangements within 
such 24-hour period, then:

          (a)  If the aggregate principal amount of Defaulted Securities does 
not exceed 10% of the aggregate principal amount of Underwritten Securities 
to be purchased pursuant to such Terms Agreement, the non-defaulting 
Underwriters named in such Terms Agreement shall be obligated to purchase the 
full amount thereof in the proportions that their respective underwriting 
obligations hereunder bear to the underwriting obligations of all 
non-defaulting Underwriters, or

          (b)  If the aggregate principal amount of Defaulted Securities 
exceeds 10% of the aggregate principal amount of Underwritten Securities to 
be purchased pursuant to such Terms Agreement, the applicable Terms Agreement 
shall terminate without liability on the part of any non-defaulting 
Underwriter.

          No action taken pursuant to this Section shall relieve any 
defaulting Underwriter from liability in respect of its default under this 
Agreement and the applicable Terms Agreement.

          In the event of any such default which does not result in a 
termination of the applicable Terms Agreement, either you or ERP shall have 
the right to 

                                       -30-
<PAGE>

postpone the applicable Closing Time for a period not exceeding seven days in 
order to effect any required changes in the Registration Statement or the 
Prospectus or in any other documents or arrangements.

          Section 11. NOTICES.

          All notices and other communications hereunder shall be in writing 
and shall be deemed to have been duly given if mailed or transmitted by any 
standard form of telecommunication.  Notices to the Underwriters shall be 
directed c/o J.P. Morgan Securities Inc., 60 Wall Street, New York, New York  
10260, attention: John Perkins; notices to ERP shall be directed to it at Two 
North Riverside Plaza, Chicago, Illinois 60606, attention of Douglas Crocker 
II, with a copy to Ruth Pinkham Haring, Esq., Rosenberg & Liebentritt, P.C., 
Two North Riverside Plaza, Suite 1600, Chicago, Illinois 60606.

          Section 12. PARTIES.

          This Agreement and the applicable Terms Agreement shall inure to 
the benefit of and be binding upon you and ERP and any Underwriter who 
becomes a party to such Terms Agreement, and their respective successors.  
Nothing expressed or mentioned in this Agreement or the applicable Terms 
Agreement is intended or shall be construed to give any person, firm or 
corporation, other than those referred to in Sections 6 and 7 and their heirs 
and legal representatives, any legal or equitable right, remedy or claim 
under or in respect of this Agreement or such Terms Agreement or any 
provision herein or therein contained.  This Agreement and the applicable 
Terms Agreement and all conditions and provisions hereof and thereof are 
intended to be for the sole and exclusive benefit of the parties hereto and 
thereto and their respective successors and said controlling persons and 
officers and directors and their heirs and legal representatives, and for the 
benefit of no other person, firm or corporation.  No purchaser of 
Underwritten Securities from any Underwriter shall be deemed to be a 
successor by reason merely of such purchase.'

          Section 13. GOVERNING LAW AND TIME.

          This Agreement and the applicable Terms Agreement shall be governed 
by and construed in accordance with the laws of the State of New York 
applicable to agreements made and to be performed in said State.  Specified 
times of day refer to New York City time.

          Section 14. COUNTERPARTS.

          This Agreement and the applicable Terms Agreement may be executed 
in one or more counterparts, and if executed in more than one counterpart the 
executed counterparts shall constitute a single instrument. 

                                       -31-
<PAGE>


          If the foregoing is in accordance with your understanding of our 
agreement, please sign and return to us a counterpart hereof, whereupon this 
instrument along with all counterparts, will become a binding agreement 
between you and ERP in accordance with its terms.


                                       Very truly yours,

                                       ERP OPERATING LIMITED PARTNERSHIP

                                       By:  Equity Residential Properties Trust,
                                            General Partner

                                            By: /s/ David J. Neithercut
                                                --------------------------
                                                Name: DAVID J. NEITHERCUT
                                                Title: EXECUTIVE VICE-PRESIDENT
                                                       CHIEF FINANCIAL OFFICER

CONFIRMED AND ACCEPTED,
  as of the date first above written:

J.P. MORGAN SECURITIES INC.

By: /s/ Geoffrey Fitzgerald
    ------------------------------
    Name:  Geoffrey Fitzgerald
    Title: Vice President



                                       -32-
<PAGE>

                                                                      Exhibit A


                         ERP OPERATING LIMITED PARTNERSHIP
                         (an Illinois limited partnership)
                                          
                               [Title of Securities]
                                          
                                  TERMS AGREEMENT

                                                     Dated: __________ __, 1994

To:   ERP Operating Limited Partnership
      Two North Riverside Plaza
      Chicago, Illinois 60606

Attention:

Ladies and Gentlemen:

           We (the "Representative") understand that ERP Operating Limited 
Partnership, an Illinois limited partnership ("ERP"), proposes to issue and 
sell $__________ aggregate principal amount of its [Title of Debt Securities]
(the "Underwritten Securities").  Subject to the terms and conditions set 
forth or incorporated by reference herein, the underwriters named below (the 
"Underwriters") offer to purchase, severally and not jointly, the respective 
amounts of Underwritten Securities set forth below opposite their respective 
names, and a proportionate share of Option Securities (as defined in the 
Underwriting Agreement referred to below) to the extent any are purchased, at 
the purchase price set forth below.

                                PRINCIPAL AMOUNT OF
               UNDERWRITER    UNDERWRITTEN SECURITIES
               -----------    -----------------------


                                 ------------
               Total           $ 
                                 ------------
                                 ------------

<PAGE>
                                        
             The Underwritten Securities shall have the following terms:

Title of Securities:
Currency:
Principal amount to be issued:
Current ratings: Moody's Investors Service, Inc. ________; Standard & Poor's
Corporation _____________________
Interest rate or formula:
Interest payment dates:
Stated maturity date:
Redemption or repayment provisions:
Number of Option Securities, if any, that may be purchased by the Underwriters:
Delayed Delivery Contracts: [authorized] [not authorized]
               [Date of Delivery:
               Minimum contract:
               Maximum aggregate principal amount:
               Fee: ___%]
[Initial public offering price: ___%, plus accrued interest, if any, or
amortized original issue discount, if any, from 19__.]
Purchase price: ___%, plus accrued interest, if any, or amortized original issue
discount, if any, from _____________, 19__ (payable in [same] [next] day funds).
Other terms:
Closing date and location:

          All the provisions contained in the document attached as Annex A 
hereto entitled "ERP Operating Limited Partnership--Senior Debt 
Securities--Underwriting Agreement" 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-
<PAGE>

          Please accept this offer no later than _________ o'clock P.M. (New 
York City time) on _____________ by signing a copy of this Terms Agreement in 
the space set forth below and returning the signed copy to us.

                                   Very truly yours,
                                   
                                   J.P. MORGAN SECURITIES INC.
                                   
                                   By:                           
                                      ------------------------------
                                   Acting on behalf of itself and the other 
                                   named Underwriters.

Accepted:

ERP OPERATING LIMITED PARTNERSHIP

By:            Equity Residential Properties Trust,
               General Partner

               By:                           
                  --------------------------------
                    Name:
                    Title:


                                       -3-
<PAGE>

                                                                      Exhibit B

                         ERP OPERATING LIMITED PARTNERSHIP
                         (an Illinois limited partnership)
                                          
                               [Title of Securities]
                                          
                             DELAYED DELIVERY CONTRACT


                                                         _____________ __, 1994

ERP Operating Limited Partnership
Two North Riverside Plaza
Chicago, Illinois 60606

Attention:

Ladies and Gentlemen:

          The undersigned hereby agrees to purchase from ERP Operating 
Limited Partnership ("ERP"), and ERP agrees to sell to the undersigned on 
_________, 19__ (the "Delivery Date"),________ principal amount of ERP's 
[insert title of security] (the "Securities"), offered by ERP's Prospectus 
dated ________, 19_, as supplemented by its Prospectus Supplement dated 
___________, 19__, receipt of which is hereby acknowledged, at a purchase 
price of [____ % of the principal amount thereof, plus accrued interest 
from ________, 19_,]  to the Delivery Date, and on the further terms and 
conditions set forth in this contract.

          Payment for the Securities which the undersigned has agreed to 
purchase on the Delivery Date shall be made to ERP or its order by 
[certified or official bank check in New York Clearing House] [same day] 
funds at the office of ____________________________________, on the Delivery 
Date, upon delivery to the undersigned of the Securities to be purchased by 
the undersigned in definitive form and in such denominations and registered 
in such names as the undersigned may designate by written or telegraphic 
communication addressed to ERP not less than five full business days prior to 
the Delivery Date.

          The obligation of the undersigned to take delivery of and make 
payment for Securities on the Delivery Date shall be subject only to the 
conditions that (1) the purchase of Securities to be made by the undersigned 
shall not on the Delivery Date be prohibited under the laws of the 
jurisdiction to which the undersigned is subject and (2) ERP, on or before 
___________, 19__, shall have sold to the Underwriters of the Securities (the 
"Underwriters") such principal amount of 

                                        
<PAGE>

the Securities as is to be sold to them pursuant to the Terms Agreement dated 
______________, 19__ between ERP and the Underwriters. The obligation of the 
undersigned to take delivery of and make payment for Securities shall not be 
affected by the failure of any purchaser to take delivery of and make 
payments for Securities pursuant to other contracts similar to this contract. 
The undersigned represents and warrants to you that its investment in the 
Securities is not, as of the date hereof, prohibited under the laws of any 
jurisdiction to which the undersigned is subject and which govern such 
investment.

          Promptly after completion of the sale to the Underwriters, ERP will
mail or deliver to the undersigned at its address set forth below notice to such
effect, accompanied by a copy of the opinions of counsel for ERP delivered to
the Underwriters in connection therewith.

          By the execution hereof, the undersigned represents and warrants to 
ERP that all necessary corporate action for the due execution and delivery of 
this contract and the payment for and purchase of the Securities has been 
taken by it and no further authorization or approval of any governmental or 
other regulatory authority is required for such execution, delivery, payment 
or purchase, and that, upon acceptance hereof by ERP and mailing or delivery 
of a copy as provided below, this contract will constitute a valid and 
binding agreement of the undersigned in accordance with its terms.

          This contract will inure to the benefit of and be binding upon the 
parties hereto and their respective successors, but will not be assignable by 
either party hereto without the written consent of the other.

          It is understood that ERP will not accept Delayed Delivery 
Contracts for an aggregate principal amount of Securities in excess of 
$         and that the acceptance of any Delayed Delivery Contract is in ERP's 
sole discretion and, without limiting the foregoing, need not be on a 
first-come, first-served basis.  If this contract is acceptable to ERP, it is 
requested that ERP sign the form of acceptance on a copy hereof and mail or 
deliver a signed copy hereof to the undersigned at its address set forth below.
This will become a binding contract between ERP and the undersigned when such 
copy is so mailed or delivered. 

                                       -2-
<PAGE>


          This Agreement shall be governed by the laws of the State of New 
York.

                                   Yours very truly,
                                   
                                   -----------------------------------
                                            (Name of Purchaser)
                                   
                                   By:                           
                                      --------------------------------
                                             (Title)
                                   
                                   -----------------------------------
                                   -----------------------------------
                                             (Address)

Accepted as of the date first above written.

ERP OPERATING LIMITED PARTNERSHIP

By: Equity Residential Properties Trust,
    General Partner

By: 
    -----------------------------------
    Name:
    Title:



                   PURCHASER--PLEASE COMPLETE AT TIME OF SIGNING

          The name and telephone number of the representative of the 
Purchaser with whom details of delivery on the Delivery Date may be discussed 
are as follows:  (Please print.)

                                         TELEPHONE NO.
               NAME                  (INCLUDING AREA CODE)
               ----                   -------------------

                                       -3-

<PAGE>



                                                                EXHIBIT 5


                                          
                   [Letterhead of Rosenberg & Liebentritt, P.C.]


                          September 28, 1998


ERP Operating Limited Partnership
c/o Board of Trustees
Equity Residential Properties Trust
Two North Riverside Plaza
Suite 400
Chicago, Illinois  60606

Ladies and Gentlemen:

     We are acting as counsel to ERP Operating Limited Partnership, an 
Illinois limited partnership (the "Operating Partnership"), the general 
partner of which is Equity Residential Properties Trust, a Maryland real 
estate investment trust (the "Company") in connection with the Operating 
Partnership's registration statement on Form S-3 (the "Registration 
Statement") previously declared effective by the Securities and Exchange 
Commission relating to unsecured senior debt securities in a maximum 
aggregate offering price of $1,000,000,000 (the "Securities") (SEC File No. 
333-45557), all of which Securities may be offered and sold by the Operating 
Partnership from time to time as set forth in the prospectus which forms a 
part of the Registration Statement (the "Prospectus"), and as to be set forth 
in one or more supplements to the Prospectus (each, a "Prospectus 
Supplement").  This opinion letter is rendered in connection with the 
proposed public offering by the Operating Partnership of (i) $145,000,000 
principal amount of its 6.15% Notes due September 15, 2000 (the "Notes") as 
described in Prospectus Supplements dated September 23, 1998 and September 
25, 1998.  This opinion letter is furnished to you at your request to enable 
the Operating Partnership to continue to fulfill the requirements of Item 
601(b)(5) of Regulation S-K, 17 C.F.R. Section 229.601(b)(5), in connection 
with the Registration Statement.

     For purposes of this opinion letter, we have examined copies of the
following documents:

     1.   An executed copy of the Registration Statement.

     2.   The Second Amended and Restated Declaration of Trust of the Company
          (the "Declaration of Trust"), as certified by the Secretary of the
          Company on the date hereof as then being complete, accurate and in
          effect.

     3.   The Second Amended and Restated Bylaws of the Company, as certified by
          the Secretary of the Company on the date hereof as then being
          complete, accurate and in effect.

<PAGE>

ERP Operating Limited Partnership
Board of Trustees
Equity Residential Properties Trust
September 28, 1998
Page: 2


     4.   The Fifth Amended and Restated Agreement of Limited Partnership of the
          Operating Partnership, certified by the Secretary of the Company, as
          the general partner of the Operating Partnership, on the date hereof
          as then being complete, accurate and in effect.

     5.   Resolutions of the Board of Trustees of the Company, as the general
          partner of the Operating Partnership, adopted on September 13, 1996,
          November 14, 1997 and January 14, 1998 relating to the filing of the
          Registration Statement and related matters, and by the Pricing
          Committee of the Board of Trustees on September 23, 1998 and 
          September 25, 1998, relating to the offering of the Notes, each as
          certified by the Secretary of the Company on the date hereof as then
          being complete, accurate and in effect.

     6.   Executed copies of the Purchase Agreement dated September 23, 1998,
          between the Operating Partnership and J.P. Morgan Securities Inc.
          ("J.P. Morgan"), and the Terms Agreements dated September 23, 1998 
          and September 25, 1998, between the Operating Partnership and J.P.
          Morgan (the "Underwriting Agreement").

     In our examination of the aforesaid documents, we have assumed the
genuineness of all signatures, the legal capacity of natural persons, the
accuracy and completeness of all documents submitted to us, the authenticity of
all original documents, and the conformity to authentic original documents of
all documents submitted to us as certified, telecopied, photostatic, or
reproduced copies.  This opinion letter is given, and all statements herein are
made, in the context of the foregoing.

     We call your attention to the fact that our firm only requires lawyers to
be qualified to practice law in the State of Illinois and, in rendering the
foregoing opinions, we express no opinion with respect to any laws relevant to
this opinion other than the laws and regulations identified herein.

     Based upon, subject to and limited by the foregoing, we are of the opinion
that, as of the date hereof, following issuance of the Notes pursuant to the
terms of the Underwriting Agreement and receipt by the Operating Partnership of
the consideration for the Notes specified in the resolutions of the Company's
Board of Trustees and the Pricing Committee referred to above, the Notes will be
validly issued and legally binding obligations of the Operating Partnership
enforceable against the Operating Partnership in accordance with their terms,
subject to applicable bankruptcy, insolvency, reorganization, moratorium,
fraudulent transfer, or similar laws affecting creditors' rights generally from
time to time in effect and general principles of equity (regardless of whether
such enforceability is considered in a proceeding at law or in equity) and
except that a waiver of rights under any usury law may be unenforceable.

<PAGE>


ERP Operating Limited Partnership
Board of Trustees
Equity Residential Properties Trust
September 28, 1998
Page: 3


     We assume no obligation to advise you of any changes in the foregoing 
subsequent to the delivery of this opinion letter.  This opinion letter has 
been prepared solely for your use in connection with the filing by the 
Operating Partnership of a Current Report on Form 8-K on the date of this 
opinion letter, which Form 8-K will be incorporated by reference into the 
Registration Statement.  This opinion letter should not be quoted in whole or 
in part or otherwise be referred to, nor filed with or furnished to any 
governmental agency or other person or entity, without the prior written 
consent of this firm.

     We hereby consent (i) to be named in the Registration Statement, and in 
the Prospectus, as attorneys who will pass upon the legality of the 
Securities to be sold thereunder and (ii) to the filing of this opinion as an 
Exhibit to the Registration Statement.  In giving this consent, we do not 
thereby admit that we are an "expert" within the meaning of the Securities 
Act of 1933, as amended.

                              Very truly yours,

                              ROSENBERG & LIEBENTRITT, P.C.

                              /s/ Rosenberg & Liebentritt, P.C.



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission