EQUITY RESIDENTIAL PROPERTIES TRUST
8-K, 1997-05-21
REAL ESTATE INVESTMENT TRUSTS
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<PAGE>
 
     As filed with the Securities and Exchange Commission on May 21, 1997

=============================================================================== 

                      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): May 16, 1997


                      EQUITY RESIDENTIAL PROPERTIES TRUST
              (Exact Name of Registrant as Specified in Charter)
 
 
           Maryland                    1-12252            36-3877868
 (State or other jurisdiction        (Commission       (I.R.S. Employer
of incorporation or organization)    File 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
- -------       ------- 
<C>           <S>
 
   1          Terms Agreement dated May 16, 1997, which incorporates by
              reference the terms of the Registrant's Standard Underwriting
              Provisions, dated May 16, 1997, each of 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-
              12211, under the Securities Act of 1933, as amended, and each of
              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. 333-12211, 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.
 
   8          Opinion of Hogan & Hartson L.L.P., which is being filed pursuant
              to Regulation 601(b)(8) as an exhibit to the Registrant's
              registration statement on Form S-3, file no. 333-12211, 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>


                                  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.


                              EQUITY RESIDENTIAL PROPERTIES TRUST


Date:  May 21, 1997           By:     /s/  Bruce C. Strohm
                                     -----------------------------------------
                                     Bruce C. Strohm, Secretary, Executive
                                     Vice President and General Counsel

<PAGE>
 
                      EQUITY RESIDENTIAL PROPERTIES TRUST
                   (a Maryland real estate investment trust)

     Depositary Shares Each Representing 1/10 of a 8.60% Series D Cumulative
Redeemable Preferred Share of Beneficial Interest (Par Value $.01 Per Share)
      (Liquidation Preference Equivalent to $25.00 Per Depositary Share)

                                TERMS AGREEMENT
                                ---------------


                                                            Dated:  May 16, 1997

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

Ladies and Gentlemen:

     We (the "Representatives") understand that Equity Residential Properties
Trust ("EQR" or the "Company") proposes to issue and sell interests in 8.60%
Series D Cumulative Redeemable Preferred Shares of Beneficial Interest ("Series
D Preferred Shares") in the form of depositary shares (the "Depositary Shares")
represented by depositary receipts (the "Depositary Receipts") (the Depositary
Shares and Depositary Receipts collectively hereinafter referred to as 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
numbers of Initial Underwritten Securities (as defined in the Underwriting
Agreement referred to below) 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 per Depositary Share set forth below.

<TABLE>
<CAPTION>
 
                                          Number of Shares of Initial
            Underwriter                   Underwritten Securities
            -----------                   ---------------------------
<S>                                       <C>
Merrill Lynch, Pierce, Fenner & Smith
            Incorporated                             1,610,000
Smith Barney Inc.                                    1,610,000
PaineWebber Incorporated                             1,610,000
Prudential Securities Incorporated                   1,610,000
Dillon, Read & Co. Inc.                                 70,000
A.G. Edwards & Sons, Inc.                               70,000
EVEREN Securities, Inc.                                 70,000
Oppenheimer & Co., Inc.                                 70,000
Piper Jaffray Inc.                                      70,000
Raymond James & Associates, Inc.                        70,000
The Robinson-Humphrey Company, Inc.                     70,000
US Clearing Corp.                                       70,000
                                                     ---------
                    Total                            7,000,000
                                                     =========
</TABLE>
<PAGE>
 
          The Underwritten Securities shall have the following terms:

                               Depositary Shares

Title of Securities:  Depositary Shares

Number of Shares:  7,000,000

Fractional amount of Preferred Shares represented by each Depositary Share:
1/10 of a Series D Preferred Share deposited with The First National Bank of
Boston, as Depositary, entitling the holder to all proportional rights and
preferences of the Series D Preferred Shares (including distribution, voting,
redemption and liquidation rights and preferences).

Current Ratings:  Moody's "Baa3," S&P "BBB-," and Duff & Phelps "BBB."

Distribution Rate: $2.15 per annum, (representing 8.60% of the public offering
price per Depositary Share) payable quarterly on or about the 15th day of
January, April, July and October of each year, commencing on July 15, 1997.

Par Value:  $.01 per Series D Preferred Share.

Liquidation Preference:  $250 per Series D Preferred Share (equivalent to $25
per Depositary Share), plus accrued and unpaid distributions.

Ranking:  With respect to the payment of distributions and amounts upon
liquidation, the Series D Preferred Shares will rank pari passu with any other
preferred shares and will rank senior to the Common Shares and any other shares
of beneficial interest of the Company ranking junior to the Series D Preferred
Shares.

Public offering price per Depositary Share:  $25, plus accumulated
distributions, if any, from May 21, 1997.

Purchase price per Depositary Share:  $24.2125, plus accumulated distributions,
if any, from May 21, 1997.

Conversion provisions:  Not convertible into or exchangeable for any other
property or securities of the Company.

Redemption provisions:  The Series D Preferred Shares are not redeemable prior
to July 15, 2007; on or after July 15, 2007, they are redeemable for cash at the
option of the Company, in whole or in part, at $250.00 per share, plus
distributions accrued and unpaid to the redemption date.  The redemption price
(other than the portion thereof consisting of accrued and unpaid distributions)
is payable solely out of the sale proceeds of other shares of beneficial
interest of the Company which may include series of preferred shares, and from
no other source.  However, the Company may redeem Series D Preferred Shares in
certain circumstances relating to the maintenance of its ability to qualify as a
REIT for Federal income tax purposes.

Number of Option Securities, if any, that may be purchased by the Underwriters:
1,050,000.

Delayed Delivery Contracts:  not authorized

Additional co-managers, if any:  Smith Barney Inc., PaineWebber Incorporated and
Prudential Securities Incorporated.

Other terms:  Voting Rights:  If distributions on the Series D Preferred Shares
are in arrears for six or more quarterly periods, holders of the Depositary
Shares, voting separately as a class with all other series of preferred shares
upon which like voting rights have been conferred and are exercisable, will be
entitled to vote for the election of two additional Trustees to serve on the
Board of Trustees of the Company until all distribution arrearages are
eliminated.

Closing date and location:   May 21, 1997, Rosenberg & Liebentritt, P.C., Two
North Riverside Plaza, Suite 1515, Chicago, Illinois  60606.

                                      -2-
<PAGE>
 
     All the provisions contained in the document attached as Annex A hereto
entitled "Equity Residential Properties Trust (a Maryland real estate investment
trust) -- Common Shares of Beneficial Interest, Preferred Shares of Beneficial
Interest and Depositary Shares -- Standard Underwriting Provisions" (the
"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.

                                      -3-
<PAGE>
 
     Please accept this offer no later than 4:30 P.M. (New York City time) on
May 16, 1997 by signing a copy of this Terms Agreement in the space set forth
below and returning the signed copy to us.

                              Very truly yours,


                              MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
                              SMITH BARNEY INC.
                              PAINEWEBBER INCORPORATED
                              PRUDENTIAL SECURITIES INCORPORATED

                              For themselves and as Representatives of the
                              several Underwriters named above

                              By:  MERRILL LYNCH, PIERCE, FENNER & SMITH
                                   INCORPORATED

                                    By:    /s/ Michael Berman
                                           ----------------------
                                           Name:  Michael Berman
                                           Title:  Director


Accepted:

By:  EQUITY RESIDENTIAL PROPERTIES TRUST,
     for itself and as the general partner of ERP Operating
     Limited Partnership

    By:  /s/ David J. Neithercut
        -----------------------------
        Name:  David J. Neithercut
        Title: Executive Vice President and
               Chief Financial Officer

                                      -4-
<PAGE>
 
                      EQUITY RESIDENTIAL PROPERTIES TRUST
                   (a Maryland real estate investment trust)
                     Common Shares of Beneficial Interest,
         Preferred Shares of Beneficial Interest and Depositary Shares

                       STANDARD UNDERWRITING PROVISIONS
                       --------------------------------


                                           May 16, 1997


          Equity Residential Properties Trust, a Maryland real estate investment
trust ("EQR") may from time to time issue and sell Common Shares of Beneficial
Interest, $.01 par value (the "Common Shares"), or one or more series of its
Preferred Shares of Beneficial Interest, $.01 par value (the "Preferred
Shares"), or Preferred Shares represented by depositary shares (the "Depositary
Shares") represented by depositary receipts (the "Depositary Receipts"), in one
or more offerings on terms to be determined at the time of sale (the Common
Shares, the Preferred Shares, the Depositary Shares and the Depositary Receipts
are collectively referred to herein as the "Securities").  Each series of
Preferred Shares may vary, as to the specific number of shares, title, stated
value, liquidation preference, issuance price, ranking, dividend rate or rates
(or method of calculation), dividend payment dates, any redemption or sinking
fund requirements, any conversion provisions and any other variable terms as set
forth in the applicable articles supplementary to EQR's Declaration of Trust
(the "Articles Supplementary") relating to such Preferred Shares and filed with
the State Department of Assessments and Taxation of Maryland ("SDAT") pursuant
to Title 8 of the Corporations and Associations Article of the Annotated Code of
Maryland (the "Maryland REIT Statute").  As used herein, "you" and "your,"
unless the context otherwise requires, shall mean the parties to whom the
applicable Terms Agreement (as hereinafter defined) is addressed as co-managers
with respect to Underwritten Securities (as hereinafter defined) purchased
pursuant thereto.

          Whenever EQR determines to make an offering of Securities through you
or through an underwriting syndicate managed by you, EQR 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 or members of an underwriting syndicate and any Underwriter
substituted pursuant to Section 10 hereof).  The Terms Agreement relating to the
offering of 


<PAGE>
 
Underwritten Securities shall specify the number of Underwritten
Securities of each class or series to be initially issued (the "Initial
Underwritten Securities"), whether the Initial Underwritten Securities shall be
in the form of Depositary Shares and if so the fractional amount of Preferred
Shares represented by each such Depositary Share, the names of the Underwriters
participating in such offering (subject to substitution as provided in Section
10 hereof), the number of Initial Underwritten Securities which each such
Underwriter severally agrees to purchase, the names of 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
EQR, 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 (in the case of Preferred Shares
and Depositary Shares only), designations, liquidation preferences, conversion
provisions, redemption provisions, and sinking fund requirements applicable to
the Initial Underwritten Securities).  In addition, each Terms Agreement shall
specify whether EQR has agreed to grant to the Underwriters an option to
purchase additional Underwritten Securities to cover over-allotments, if any,
and the number 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
telecommunication between you and EQR.  Each offering of Underwritten Securities
through you or through an underwriting syndicate managed by you will be governed
by these Standard Underwriting Provisions as incorporated by reference into, and
supplemented by, the applicable Terms Agreement, and such Terms Agreement shall
inure to the benefit of and be binding upon each Underwriter participating in
the offering of such Underwritten Securities.

          If the applicable Terms Agreement so provides, the Preferred Shares
will be deposited by EQR against delivery of Depositary Receipts to be issued by
the depositary (the "Depositary") named in a deposit agreement (the "Deposit
Agreement"), to be entered into by and among EQR, the Depositary and the holders
from time to time of the Depositary Receipts issued thereunder and evidencing
Depositary Shares.  If the Preferred Shares are not represented by Depositary
Receipts, then all references herein to Depositary Receipts and Depositary
Shares of any kind, to the Deposit Agreement or the Depositary, and to any
agreements, instruments or persons related thereto shall be disregarded and all
representations, conditions, opinions and other documents relating to the
foregoing shall not apply to this Agreement for purposes of the applicable Terms
Agreement.

          EQR has filed with the Securities and Exchange Commission (the
"Commission") a registration statement on Form S-3 (No. 333-

                                      -2-
<PAGE>

12211) 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 415 of the rules and regulations of the Commission under
the 1933 Act (the "1933 Act Regulations"), and EQR has filed such amendments
thereto as may have been required prior to the execution of the applicable Terms
Agreement.  Such registration statements (as amended, if applicable) have been
declared effective by the Commission.  Such registration statements and the
prospectuses constituting parts thereof (including 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 referred to herein as the "Registration
Statement" and the "Prospectus," respectively; provided, that if any revised
prospectus shall be provided to you by EQR 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 Statement became effective (whether
or not such revised prospectus is required to be filed by EQR 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.  If EQR files a registration
statement with the Commission pursuant to Rule 462(b) of the 1933 Act
Regulations (the "Rule 462 Registration Statement"), then, after such filing,
all references to "Registration Statement" shall also be deemed to include the
Rule 462 Registration Statement.  If EQR elects to rely upon Rule 434 of the
1933 Act Regulations, then all references to "Prospectus" shall also be deemed
to include the preliminary or final prospectus and the applicable term sheet or
abbreviated term sheet (the "Term Sheet"), as the case may be, in the form first
furnished to you by EQR in reliance upon Rule 434 of the 1933 Act Regulations,
and all references to the date of the Prospectus shall mean the date of the Term
Sheet.  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.

          For purposes hereof, all references to the Registration Statement,
Prospectus, Term Sheet or preliminary prospectus or to any amendment or
supplement to any of the foregoing shall be deemed to include any copy filed
with the Commission 

                                      -3-
<PAGE>
 
pursuant to its Electronic Data Gathering, Analysis and Retrieval system
("EDGAR").

          EQR is the sole general partner of ERP Operating Limited Partnership,
a limited partnership organized under the laws of the State of Illinois ("ERP"),
and owns the percentage of ERP's partnership interests specified in the most
recent Prospectus.  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
"subsidiary" or "subsidiaries," when used with respect to EQR, shall include (i)
ERP, (ii) the Management Corporations, and (iii) any entity the operations of
which are included in the consolidated financial statements for EQR for the most
recent fiscal period included in the Prospectus.

          Section 1.  Representations and Warranties.
                      -------------------------------

          (a) EQR and ERP, jointly and severally, represent and warrant to you
and each other Underwriter named in the applicable Terms Agreement, as of the
date thereof ("Representation Date"), as follows:

               (i) The Registration Statement and the Prospectus, at the time
          the Registration Statement and any post-effective amendment thereto
          (including the filing of EQR's most recent Annual Report on Form 10-K
          with the Commission (the "Form 10-K)) became effective, complied, and
          as of each Representation Date will comply, in all material respects
          with the requirements of the 1933 Act and 1933 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 each
          Representation Date 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 EQR in writing by any
          Underwriter concerning such Underwriter through you expressly for use
          in the Registration Statement or Prospectus.  If EQR elects to rely
          upon Rule 434 of the 1933 Act Regulations, EQR will comply with the
          requirements of Rule 434.

                                      -4-
<PAGE>
 
               (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.

               (iii)  No stop order suspending the effectiveness of the
          Registration Statement or any part thereof has been issued and no
          proceedings for that purpose have been instituted or, to the knowledge
          of EQR, 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 proceedings for that
          purpose have been instituted or, to the knowledge of EQR or ERP,
          threatened by the Commission or by the state securities authority of
          any jurisdiction.  Any request on the part of the Commission for
          additional information has been complied with.

               (iv) The 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 or incorporated by reference in the Registration Statement
          and the Prospectus present fairly the financial position of EQR and
          its consolidated subsidiaries as at the dates indicated and the
          results of their operations specified, and 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 or incorporated by reference in the Registration
          Statement present fairly in accordance with GAAP 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
          EQR, reasonable.

                                      -5-
<PAGE>
 
               (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 or business affairs of EQR and its subsidiaries, considered as
          a single enterprise, whether or not arising in the ordinary course of
          business (a "Material Adverse Change"), (B) there have been no
          material transactions entered into by EQR or any of its subsidiaries,
          other than transactions in the ordinary course of business, which are
          material with respect to EQR and its subsidiaries considered as a
          single enterprise, (C) neither EQR nor any of its subsidiaries has
          incurred any material obligation or liability, direct, contingent or
          otherwise and (D) except for (i) regular quarterly distributions on
          EQR's common shares of beneficial interest, $.01 par value, and
          preferred shares of beneficial interest, $.01 par value and (ii) as
          disclosed in the Prospectus, there has been no dividend or
          distribution of any kind declared, paid or made by EQR on any class of
          its shares of beneficial interest.

               (vii) EQR has been duly formed and is validly existing as a real
          estate investment trust in good standing under the laws of the State
          of Maryland with power and authority to own, lease and operate its
          properties and to conduct its business as described in the Prospectus
          and to enter into and perform its obligations under the applicable
          Terms Agreement.

              (viii) EQR is duly qualified or registered as a foreign
          organization to transact business and is in good standing 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 qualify would not have a material adverse
          effect on the condition, financial or otherwise, or the earnings,
          assets or business affairs of EQR and its subsidiaries considered as a
          single enterprise (a "Material Adverse Effect").

               (ix)  Each subsidiary of EQR has been duly formed and is validly
          existing and in good standing as a partnership, corporation or limited
          liability company ("LLC") under the laws of its jurisdiction of
          organization, with partnership, corporation or LLC power and authority
          to carry on its business and to own or lease its properties as
          described in the Prospectus and is duly qualified or registered as a
          foreign partnership, corporation or LLC 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


                                      -6-
<PAGE>
 
          ownership or leasing of property, except where the failure to so
          qualify would not have a Material Adverse Effect.

               (x)  The Common Shares have been duly authorized for issuance and
          sale to the Underwriters pursuant hereto and, when issued and
          delivered as provided herein and in the applicable Terms Agreement,
          the Common Shares will be validly issued, fully paid and non-
          assessable; the Preferred Shares have been duly authorized and
          classified for issuance and sale to the Underwriters pursuant hereto
          and when Articles Supplementary setting the terms of the Preferred
          Shares are duly executed and filed for record with the SDAT and the
          Preferred Shares are duly paid for, sold and issued, and certificates
          therefor are duly executed, countersigned and delivered as provided
          herein and in the applicable Terms Agreement or any Delayed Delivery
          Contract, the Preferred Shares will be validly issued, fully paid and
          non-assessable; when Depositary Receipts evidencing any Depositary
          Shares are issued and delivered against deposit of Preferred Shares
          and against payment for the Depositary Shares pursuant hereto, the
          Terms Agreement relating to the Depositary Shares and the Deposit
          Agreement, the Preferred Shares will be validly issued, fully paid and
          non-assessable, and the Depositary Receipts will be legally issued and
          will entitle the holders thereof to the rights specified in the
          Depositary Receipts and the Deposit Agreement; the Preferred Shares,
          if applicable, conform to the Articles Supplementary; the Underwritten
          Securities being sold pursuant to the applicable Terms Agreement
          conform, in all material respects, to the descriptions thereof
          contained in the Prospectus; and the issuance of the Underwritten
          Securities is not subject to preemptive or similar rights.

               (xi)  If applicable, the Deposit Agreement conforms in all
          material respects to all statements relating thereto contained in the
          Prospectus.  Before the Closing Time for any Depositary Shares, the
          Deposit Agreement will be duly authorized and executed by EQR, and
          assuming due authorization, execution and delivery by the Depositary,
          the Deposit Agreement will constitute a valid and legally binding
          instrument of EQR enforceable against EQR 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) the availability of
          equitable remedies may be limited by equitable principles of general
          applicability, and (C) rights to indemnity and contribution thereunder
          may be limited by state or federal securities laws or the public
          policy underlying such laws.

                                      -7-
<PAGE>
 
               (xii)  If applicable, the Common Shares issuable upon conversion
          of any of the Preferred Shares or the Depositary Shares have been duly
          and validly authorized and reserved for issuance upon such conversion
          by all necessary action and such shares, when issued upon such
          conversion, will be duly and validly issued and will be fully paid and
          non-assessable, and the issuance of such shares upon such conversion
          will not be subject to preemptive or other similar rights; the Common
          Shares issuable upon conversion of any of the Preferred Shares or the
          Depositary Shares will conform in all material respects to the
          descriptions thereof in the Prospectus.

               (xiii)  The authorized, issued and outstanding shares of
          beneficial interest of EQR are as set forth in the Prospectus (except
          for subsequent issuances, if any, pursuant to reservations,
          agreements, employee benefit plans, dividend reinvestment plans,
          employee and trustee share option plans or the exercise of convertible
          securities referred to in the Registration Statement); the issued and
          outstanding Common Shares and the Preferred Shares have been duly
          authorized and validly issued and are fully paid and non-assessable;
          and none of such shares of beneficial interest were issued in
          violation of preemptive or other similar rights of any securityholder
          of EQR.

               (xiv)  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 (except for
          subsequent issuances, if any, pursuant to reservations, agreements,
          employee benefit plans, dividend reinvestment plans, employee and
          trustee share option plans or the exercise of convertible securities
          referred to in the Registration Statement) or registration under the
          1933 Act of, any shares of beneficial interest or capital stock of, or
          partnership or other equity interest in, EQR or any subsidiary of EQR
          except for multifamily property acquisition agreements with respect to
          the sale or issuance of Common Shares or OP Units or registration of
          Common Shares or Common Shares underlying OP Units which are not
          material in amount.

               (xv)  All of the issued and outstanding shares of beneficial
          interest or capital stock and partnership interests, as the case may
          be, of each subsidiary have been validly issued and fully paid and are
          owned by EQR, and/or a subsidiary as described in the Registration
          Statement, and/or certain affiliated entities, in each case free and
          clear of any security interest, mortgage, pledge, lien, encumbrance,
          claim or equity.  EQR owns no direct or indirect equity interest in
          any entity other than its subsidiaries, except for such interests as,
          in the 

                                      -8-
<PAGE>
 
          aggregate, are not material to the condition, financial or otherwise,
          or the earnings, assets or business affairs of EQR and its
          subsidiaries considered as a single enterprise.

               (xvi)  Each of EQR and ERP has full power and authority to enter
          into and to perform its obligations under the applicable Terms
          Agreement, the Deposit Agreement, if applicable, and the Delayed
          Delivery Contracts (as defined in Section 2 hereof), if any, and as of
          each Representation Date, the applicable Terms Agreement, Deposit
          Agreement, if applicable, and the Delayed Delivery Contracts, if any,
          will have been, duly authorized, executed and delivered by each of EQR
          and ERP, and each is or will be a valid and binding obligation of EQR
          and ERP, enforceable against EQR and 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) 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.

               (xvii)  There is no action, suit or proceeding before or by any
          court or governmental agency or body now pending, or, to the knowledge
          of EQR or ERP, threatened, against or affecting EQR 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 or which might materially and adversely affect
          the properties or assets thereof or which might materially and
          adversely affect the consummation of the applicable Terms Agreement or
          any Deposit Agreement or the Delayed Delivery Contracts or the
          transactions contemplated herein or therein; all pending legal or
          governmental proceedings to which EQR or any of its subsidiaries is a
          party or of which any of their properties or assets is the subject
          which are not described in the Prospectus, including ordinary routine
          litigation incidental to the business, could not, considered in the
          aggregate, reasonably be expected to result in a Material Adverse
          Effect; and there are no contracts or documents of EQR 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,
          except for Articles Supplementary, as applicable, which will be filed
          on Form 8-K as soon as practicable after the applicable Representation
          Date.

                                      -9-
<PAGE>
 
               (xviii)  None of EQR or any of its subsidiaries is required to
          own or possess any trademarks, service marks, trade names or
          copyrights to conduct the business operated by it as of any
          Representation Date, other than those the failure to possess or own
          would not have a Material Adverse Effect; and none of EQR or any of
          its subsidiaries has received any notice or is otherwise aware of any
          infringement of or conflict with asserted rights of others with
          respect to any trademarks, service marks, trade names or copyrights or
          of any facts or circumstances which would render any trademarks,
          service marks, trade names or copyrights invalid or inadequate to
          protect the interest of EQR or any of its subsidiaries therein, and
          which infringement or conflict (if the subject of any unfavorable
          decision, ruling or finding) or invalidity or inadequacy, singly or in
          the aggregate, would result in a Material Adverse Effect.

               (xix)  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 EQR of the
          transactions contemplated hereby, the applicable Terms Agreement or
          any Deposit Agreement, except such as may be required under the 1933
          Act, the 1933 Act Regulations or state securities law.

               (xx)  Each of EQR and its subsidiaries has all consents,
          authorizations, approvals, orders, certificates and permits
          (collectively, "Governmental Licenses") 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 have
          a Material Adverse Effect; and all of the Governmental Licenses are
          valid and in full force and effect, except where the invalidity of
          such Governmental Licenses or the failure of such Governmental
          Licenses to be in full force and effect would not result in a Material
          Adverse Effect; and none of EQR 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 result in
          a Material Adverse Effect.

               (xxi)  The documents incorporated or deemed to be incorporated by
          reference in the Prospectus, when they became effective or at the time
          they were or hereafter are filed with the Commission, complied and
          will comply in all material respects with the requirements of the 

                                     -10-
<PAGE>
 
          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 date of the
          Prospectus, as of each Representation Date, at the time the
          Registration Statement became effective, and at the Closing Time 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.

               (xxii)  Each of EQR 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 neither EQR nor ERP has any reason to
          believe that EQR 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 have a Material
          Adverse Effect, except as described in or contemplated by the
          Registration Statement and the Prospectus.

               (xxiii)  None of EQR or any of its subsidiaries is in violation
          of its charter documents, bylaws, LLC agreements or partnership
          agreements, 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 result in a Material
          Adverse Effect; and the execution, delivery and performance of the
          applicable Terms Agreement or any Deposit Agreement and any other
          agreement or instrument entered into or issued or to be entered into
          or issued by EQR in connection with the transactions contemplated
          herein or therein and the consummation of the transactions
          contemplated hereby or thereby, including the issuance, sale and
          delivery of the Underwritten Securities and the use of proceeds
          described in the Prospectus, have been duly authorized by all
          necessary action and do not and 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 EQR
          or any of its subsidiaries, pursuant to any contract, indenture,
          mortgage, loan agreement, note, lease or other instrument to which EQR
          or any of its subsidiaries is a party or by which it or any of them
          may be bound or affected, or to which any of their properties or
          assets is subject, nor will

                                     -11-
<PAGE>
 
          such action result in any violation of the provisions of the
          partnership agreement, LLC agreement or charter or bylaws of EQR or
          any of its subsidiaries, or any applicable law, regulation, ruling,
          order, judgment, administrative regulation or administrative or court
          decree.

               (xxiv)   Neither EQR nor ERP has taken or will take, directly or
          indirectly, any action prohibited by Regulation M.

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

               (xxvi)   Except as otherwise described in the Prospectus, each of
          EQR and its subsidiaries has good and marketable title in fee simple
          to all real property and good title to all personal property
          (including mortgage investments) owned by it which is material to the
          business of EQR 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 affect the value of such
          property and do not interfere with the use made and proposed to be
          made of such property by EQR or any of its subsidiaries; and any real
          property and buildings held under lease by EQR or any of its
          subsidiaries are held by it 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 EQR or such subsidiaries, in each case except as
          described in or contemplated by the Registration Statement and the
          Prospectus.

              (xxvii)   Each of EQR and its subsidiaries has obtained title
          insurance on all of the properties owned by each of them covering
          risks and in amounts that are commercially reasonable for the assets
          owned by them and that are consistent with the types and amounts of
          insurance typically maintained by current owners of similar
          properties, and in each case such title insurance is in full force and
          effect.

               (xxviii) The mortgages and deeds of trust encumbering the
          properties and assets described in general in the Prospectus are not
          convertible and are not cross-defaulted or cross-collateralized to any
          property not owned by EQR or any of its subsidiaries; except as
          disclosed in the Prospectus, none of EQR or any of its subsidiaries
          holds participating interests in such mortgages and deeds of trust.

               (xxix)   Each of the partnership agreements and LLC agreements to
          which EQR or any of its subsidiaries is a party has been duly
          authorized, executed and delivered by such party and constitutes the

                                     -12-
<PAGE>
 
          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.

               (xxx)   Except as otherwise stated in the Registration Statement
          and the Prospectus or as would not, singly or in the aggregate, result
          in a Material Adverse Effect, (A) neither EQR nor any of its
          subsidiaries is in violation of any federal, state, local or foreign
          statute, law, rule, regulation, ordinance, code, policy or rule of
          common law or any judicial or administrative interpretation thereof
          including any judicial or administrative order, consent, decree or
          judgment, relating to pollution or protection of human health, the
          environment (including, without limitation, ambient air, surface
          water, groundwater, land surface or subsurface strata) or wildlife,
          including, without limitation, laws and regulations relating to the
          release or threatened release of chemicals, pollutants, contaminants,
          wastes, toxic substances, hazardous substances, petroleum or petroleum
          products (collectively, "Hazardous Materials") or to the manufacture,
          processing, distribution, use, treatment, storage, disposal, transport
          or handling of Hazardous Materials (collectively, "Environmental
          Laws"), (B) EQR and its subsidiaries have all permits, authorizations
          and approvals required under any applicable Environmental Laws and are
          each in compliance with their requirements, (C) there are no pending
          or threatened administrative, regulatory or judicial actions, suits,
          demands, demand letters, claims, liens, notices of noncompliance or
          violation, investigation or proceedings relating to any Environmental
          Law against EQR or any of its subsidiaries and (D) there are no events
          or circumstances that might reasonably be expected to form the basis
          of an order for clean-up or remediation, or an action, suit or
          proceeding by any private party or governmental body or agency,
          against or affecting EQR or any of its subsidiaries relating to
          Hazardous Materials or any Environmental Laws.

               (xxxi)  EQR has operated and intends to continue to operate in
          such a manner as to qualify to be taxed as a "real estate investment

                                      -13-
<PAGE>
 
          trust" under the Internal Revenue Code of 1986, as amended (the
          "Code").

               (xxxii)   Each of EQR and its subsidiaries has filed all federal,
          state, local and foreign income tax returns which have been required
          to be filed and has paid all taxes required to be paid and any other
          assessment, fine or penalty levied against it, to the extent that any
          of the foregoing is due and payable, except in all cases for any such
          tax, assessment, fine or penalty that is being contested in good faith
          and except in any case in which the failure to file or pay such taxes
          would not have a Material Adverse Effect.

               (xxxiii)  Neither EQR 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 1935, as amended.

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

          (b) Any certificate signed by 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 EQR or such subsidiary to each Underwriter
participating in such offering as to the matters covered thereby on the date of
such certificate.

          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, EQR
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 number 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 

                                     -14-
<PAGE>
 
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
EQR setting forth the number 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 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 days after the exercise
of said option, unless otherwise agreed upon by you and EQR. If the option is
exercised as to all or any portion of the Option Securities, each of the
Underwriters, acting severally and not jointly, will purchase that proportion of
the total number of Option Securities then being purchased which the number of
Initial Underwritten Securities each such Underwriter has agreed to purchase as
set forth in the applicable Terms Agreement bears to the total number of Initial
Underwritten Securities, subject to such adjustments as you in your discretion
shall make to eliminate any sales or purchases of fractional Option Securities.

          (c) Payment of the purchase price for, and delivery of, the
Underwritten Securities to be purchased by the Underwriters shall be made at
such place as shall be agreed upon by you and EQR, at 10:00 A.M., New York City
time, no later than the third (fourth, if the pricing occurs after 4:30 p.m.
(New York City time) on any given business day) business day (unless postponed
in accordance with the provisions of Section 10 hereof) following the date of
the applicable Terms Agreement or at such other time as shall be agreed upon by
you and EQR (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 such place as shall be
agreed upon by you and EQR on each Date of Delivery as specified in the notice
from you to EQR.  Unless otherwise specified in the applicable Terms Agreement,
payment shall be made to EQR by wire transfer to accounts designated by EQR of
immediately available funds payable to the order of EQR or ERP against delivery
to you for the respective accounts of the Underwriters of the Underwritten
Securities to be purchased by them.  The Underwritten Securities or, if
applicable, Depositary Receipts evidencing the Depositary Shares, 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 EQR
pursuant to delayed delivery contracts ("Delayed Delivery Contracts")
substantially 

                                     -15-
<PAGE>
 
in the form of Exhibit B hereto with such changes therein as EQR
may approve.  As compensation for arranging Delayed Delivery Contracts, EQR will
pay to you at Closing Time, for the respective accounts of the Underwriters, a
fee specified in the applicable Terms Agreement for each of the 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, EQR will enter into Delayed
Delivery Contracts (for not less than the minimum number of Underwritten
Securities per Delayed Delivery Contract specified in the applicable Terms
Agreement) with all purchasers proposed by the Underwriters and previously
approved by EQR as provided below, but not for an aggregate number 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 EQR, at least three business days prior to the
applicable Closing Time, the names of any institutional investors with which it
is proposed that EQR will enter into Delayed Delivery Contracts and the number
of Underwritten Securities to be purchased by each of them, and EQR 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 EQR and the number of Underwritten Securities to be covered by each
such Delayed Delivery Contract.

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

          Section 3.  Covenants.
                      ----------

          Each of EQR and 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, EQR will prepare a Prospectus Supplement setting forth the number of
Underwritten Securities covered thereby and their terms not otherwise specified
in the Prospectus pursuant to which the Underwritten Securities are being
issued, the names of the Underwriters participating in the offering and the
number 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 
               
                                     -16-
<PAGE>
 
which the Underwritten Securities are to be purchased by the Underwriters from
EQR, 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 EQR deem appropriate in connection with the offering of
the Underwritten Securities; and EQR 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
furnish to the Underwriters named therein as many copies of the Prospectus and
such Prospectus Supplement as you shall reasonably request and the Prospectus
and any Prospectus Supplement shall be identical to any electronically
transmitted copies thereof filed with the Commission pursuant to EDGAR, except
to the extent permitted by Regulation S-T.

          (b) EQR will notify you immediately, and confirm such notice in
writing, of (i) the effectiveness of any amendment to the Registration
Statement, (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 of any order
preventing or suspending the use of the Prospectus or the initiation of any
proceedings for any of such purposes; and EQR 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, EQR will give you notice of its intention to file or prepare any
amendment to the Registration Statement (including any filing under Rule 462(b)
of the 1933 Act Regulations), any Term Sheet or any amendment or supplement to
the Prospectus (including any revised prospectus which EQR 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 became 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) EQR will deliver to you as many conformed copies of the
Registration Statement as originally filed and of each amendment thereto
(including exhibits filed therewith or incorporated by reference therein and

                                     -17-
<PAGE>
 
documents incorporated or deemed to be incorporated by reference therein) as you
reasonably request.

          (e) EQR 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) EQR will comply with the 1933 Act and the 1933 Act Regulations and
the 1934 Act and the 1934 Act Regulations so as to permit the completion of the
distribution of the Underwritten Securities as contemplated in the applicable
Terms Agreement and in the Registration Statement and the Prospectus.  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 EQR, 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 EQR 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) EQR will endeavor, in cooperation with the Underwriters, to
qualify the Underwritten Securities and the Common Shares issuable upon
conversion of the Preferred Shares or the Depositary Shares, if any, 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 EQR shall not be obligated to (i)
qualify as a foreign corporation 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 or the Common Shares
issuable upon conversion of the Preferred Shares or the Depositary Shares, if
any, have been so qualified, EQR 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.

                                     -18-
<PAGE>
 
          (h) With respect to each sale of Underwritten Securities, EQR 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 EQR's fiscal quarter next following the "effective date" (as defined in such
Rule 158) of the Registration Statement.

          (i) EQR, 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) EQR 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 securities of the same class or
series or ranking on a parity with such Underwritten Securities (other than the
Underwritten Securities which are to be sold pursuant to such Terms Agreement)
or, if such Terms Agreement relates to Underwritten Securities that are
convertible into Common Shares, any Common Shares or any security convertible
into Common Shares (except for Common Shares issued pursuant to reservations,
multifamily property acquisition agreements, employee benefit plans, dividend
reinvestment plans, or employee and trustee share options plans), except as may
otherwise be provided in the applicable Terms Agreement.

          (k) EQR will reserve and keep available at all times, free of
preemptive rights, Common Shares for the purpose of enabling EQR to satisfy any
obligations to issue such shares upon conversion of the Preferred Shares or the
Depositary Shares, as the case may be.

          (l) If requested by you, EQR will use its reasonable best efforts to
list the Underwritten Securities and the Common Shares issuable upon conversion
of the Underwritten Securities, if any, on the New York Stock Exchange or such
other national exchange on which the Underwritten Securities or Common Shares,
as the case may be, are then listed.

          (m) On or prior to the Closing Time, EQR will cause Articles
Supplementary relating to the Preferred Shares or Preferred Shares represented
by Depositary Shares, if any, to be filed for record with the SDAT in accordance
with the Maryland REIT Statute.

                                     -19-                 
<PAGE>
 
          (n) EQR will use its reasonable best efforts to meet the requirements
to qualify as a "real estate investment trust" under the Code.

          (o) If requested by you, EQR will cause, or have caused, the officers
of EQR to enter into lock-up agreements in form and substance satisfactory to
the Underwriters.

          (p) Except for the authorization of actions permitted to be taken by
the Underwriters as contemplated herein or in the Prospectus, EQR will not (i)
take, directly or indirectly, any action designed to cause or to result in, or
that might reasonably be expected to constitute, the stabilization or
manipulation of the price of any security of EQR to facilitate the sale or
resale of the Underwritten Securities, (ii) sell, bid for or purchase the
Underwritten Securities or pay any person any compensation for soliciting
purchases of the Underwritten Securities or (iii) pay or agree to pay to any
person any compensation for soliciting another to purchase any other securities
of EQR.

          Section 4.  Payment of Expenses.
                      --------------------

          EQR will pay all expenses incident to the performance of its
obligations under the applicable Terms Agreement or any Deposit Agreement,
including (i) the printing and filing of the Registration Statement as
originally filed and of each amendment thereto, (ii) the filing of these
Standard Underwriting Provisions and the applicable Terms Agreement, (iii) the
preparation, issuance and delivery of the Underwritten Securities to the
Underwriters, (iv) to the extent applicable, the fees and disbursements of EQR's
counsel and accountants, (v) the qualification of the Underwritten Securities
and the Common Shares issuable upon conversion of the Preferred Shares or the
Depositary Shares, if any, 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 applicable Deposit Agreement, if
any, (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 and the Common Shares issuable upon conversion of the Preferred
Shares or the Depositary Shares, if any, 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. ( including
fees and disbursements of counsel for the Underwriters in connection therewith),
(xi) the costs and expenses of the deposit of Preferred Shares under any Deposit
Agreement in exchange for Depositary Receipts, including the charges of the
Depositary in connection therewith; (xii) the 

                                     -20-
<PAGE>
 
fees and expenses of the Depositary, including the fees and disbursements of
counsel for the Depositary, and (xiii) the costs and charges of any transfer
agent or registrar.

          If the applicable Terms Agreement is terminated by you in accordance
with the provisions of Section 5 or Section 9(a)(i) or 9(a)(iv), EQR 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 EQR and ERP herein contained,
to the accuracy of the statements of officers of EQR and ERP made in any
certificate pursuant to the provisions hereof, to the performance by EQR and 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)
any request on the part of the Commission for additional information shall have
been complied with to the reasonable satisfaction of counsel for the
Underwriters, (iii) the rating assigned by any nationally recognized statistical
rating organization to any Preferred Shares of EQR or 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 Preferred Shares of EQR or 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.  A prospectus containing
information relating to the description of the Underwritten Securities and the
Common Shares issuable upon conversion of the Preferred Shares or the Depositary
Shares, if any, the specific method of distribution and similar matters shall
have been filed with the Commission in accordance with Rule 424 (or any required
post-effective amendment providing such information shall have been filed and
declared effective in accordance with the requirements of Rule 430A), or, if EQR
has elected to rely upon Rule 434 of the 1933 Act Regulations, a Term Sheet
shall have been filed with the Commission in accordance with Rule 424(b)(7).

                                    - 21 -
<PAGE>
 
          (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 EQR and its subsidiaries, in
form and substance satisfactory to counsel for the Underwriters, to the effect
that:

                    (i) EQR is a real estate investment trust duly formed and
          existing under and by virtue of the laws of the State of Maryland and
          is in good standing with the SDAT; EQR 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.

                    (ii) Each of EQR'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 beneficial interest,
          capital stock, LLC 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, LLC interests
          and partnership interests owned by EQR, are owned by EQR or another
          subsidiary, to such counsel's knowledge, directly, free and clear of
          any security interest, mortgage, pledge, lien, encumbrance, claim or
          equity.

                                     -22-
<PAGE>
 
                    (iii)  The authorized, issued and outstanding shares of 
          beneficial interest of EQR are as set forth in the Prospectus (except
          for subsequent issuances, if any, pursuant to reservations,
          agreements, employee benefit plans, dividend reinvestment plans,
          employee and trustee share option plans or the exercise of convertible
          securities referred to in the Registration Statement) and such shares
          of beneficial interest are duly authorized validly issued, fully paid
          and non-assessable.

                    (iv)  The Underwritten Securities and, if applicable, the 
          deposit of the Preferred Shares in accordance with the provisions of a
          Deposit Agreement, have been duly authorized for issuance and sale
          pursuant to the applicable Terms Agreement and such Underwritten
          Securities, when issued and delivered by EQR pursuant to this
          Agreement against payment of the consideration set forth in the
          applicable Terms Agreement or the Delayed Delivery Contracts, if any,
          will be validly issued, fully paid and non-assessable; the terms of
          the Underwritten Securities being sold pursuant to the applicable
          Terms Agreement conform in all material respects to the description of
          the Underwritten Securities set forth under "Description of Shares of
          Beneficial Interest" in the Prospectus and under "Description of
          Common Shares of Beneficial Interest," "Description of Preferred
          Shares of Beneficial Interest" or "Description of Depositary Shares,"
          or other similar caption, as the case may be, in the Prospectus
          Supplement; and the issuance of the Underwritten Securities is not
          subject to any statutory preemptive rights or, to counsel's knowledge,
          any contractual rights to subscribe for more shares. If applicable,
          the form of certificate used to evidence the Underwritten Securities
          complies with all applicable statutory requirements.

                                     -23-
<PAGE>
 
                    (v)  If applicable, the Common Shares issuable upon
          conversion of any of the Preferred Shares or Depositary Shares
          have been duly authorized and reserved for issuance upon such
          conversion by all necessary action and such shares, when issued upon
          such conversion will be validly issued and will be fully paid and non-
          assessable, and the issuance of such shares upon such conversion will
          not be subject to any statutory preemptive rights or, to counsel's
          knowledge, any contractual rights to subscribe for more shares; and
          the Common Shares issuable upon conversion of the Preferred Shares or
          the Depositary Shares conform in all material respects to the
          descriptions thereof in the Prospectus.

                    (vi)  The applicable Deposit Agreement, if any, has been
          duly authorized, executed and delivered by EQR and (assuming due
          authorization, execution and delivery of the Deposit Agreement by the
          Depositary) constitutes a valid and binding obligation of EQR
          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, (B) the availability of equitable remedies may be limited
          by equitable principles of general applicability, and (C) rights to
          indemnity and contribution thereunder may be limited by state or
          federal securities laws or the public policy underlying such laws; and
          the Deposit Agreement, if any, conforms in all material respects to
          all statements relating thereto contained in the Prospectus.

          
                    (vii)  Each of the applicable Terms Agreement and the
          Delayed Delivery Contracts, if any, has been duly authorized, executed
          and delivered by EQR and ERP, and each of EQR and ERP has the power
          and authority to perform its obligations hereunder and thereunder.



                    (viii)  The execution and delivery of the applicable Terms
          Agreement by each of EQR and ERP, and the performance by each of EQR
          and ERP of its obligations thereunder and the consummation of the
          transactions contemplated hereby and thereby, do not result in a
          violation of any provision of the Declaration of Trust, bylaws or
          partnership agreement of EQR or ERP or of the Maryland REIT statute 
          or, to counsel's knowledge, any other applicable law, administrative
          regulation or administrative or court decree, and will not, to
          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 EQR or any of its
          subsidiaries pursuant to any agreement or other instrument that is
          binding upon EQR or any subsidiary, or to which any of their
          properties or assets is subject.

                                     -24-
<PAGE>
 
                    (ix)  The Registration Statement is effective under the 1933
          Act and, to counsel's knowledge, no stop order suspending the
          effectiveness of the Registration Statement has been issued under the
          1933 Act and no proceedings for that purpose have been initiated or
          threatened by the Commission.

                    (x)  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 EQR and ERP is
          required for the performance by each of EQR and ERP of its obligations
          under the applicable Terms Agreement, except such as may be required
          under the federal securities laws and the securities or Blue Sky laws
          of various states in connection with the offer and sale of the
          Underwritten Securities.

                    (xi)  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 EQR 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, except for the
          Articles Supplementary which will be filed on Form 8-K as soon as
          practicable after the applicable Representation Date.
 
                    (xii)  None of EQR or any of its subsidiaries is required to
          be registered under the 1940 Act.

                                     -25-
<PAGE>
 
                    (xiii)  The information (A) in the Prospectus under the
          heading "Description of Shares of Beneficial Interest" and (B) in
          EQR's Annual Report on Form 10-K for the most recent fiscal year then
          ended 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.

                    (xiv)  The Registration Statement and Prospectus (except for
          financial statements and schedules included therein, 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 and the 1933 Act Regulations.

                    (xv)  To their knowledge, EQR 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, 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.
 
                                     -26-
<PAGE>
 
                    (xvi)  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 beneficial interest or capital stock of or other equity
          interest in EQR or any subsidiary of EQR except for multifamily
          property acquisition agreements with respect to the sale or issuance
          of Common Shares or OP Units which are not material in amount.

                    (xvii)  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.

                    (xviii)  The Articles Supplementary relating to the
          Preferred Shares and the Depositary Shares, if any, have been filed
          for record with the SDAT pursuant to the Maryland REIT Statute and the
          number of Preferred Shares and the title, par value, liquidation
          preference, ranking, dividend rate or rates (or method of
          calculation), dividend payment dates, redemption or sinking fund
          requirements, conversion provisions and other terms of the Preferred
          Shares have been set forth therein.

                                     -27-
<PAGE>
 
               (2)  The favorable opinion, dated as of the applicable Closing 
Time, of Hogan & Hartson L.L.P., counsel for the Underwriters and Maryland and 
special tax counsel to EQR, substantially to the effect specified in 
subparagraphs (i) first two clauses only, as to applicable Maryland law, (iv), 
(v), (vi), (vii), (viii), as to applicable Maryland law and administrative 
regulations (other than Maryland securities laws and regulations), (ix), (x) as 
to any Maryland governmental body or agency, (xiv), and (xviii) of Section 
5(b)(1), and to the effect that (A) EQR was organized and has operated in 
conformity with the requirements for qualification and taxation as a real estate
investment trust under the Internal Revenue Code of 1986, as amended, for each 
of its taxable years ended since December 31, 1993, and EQR's current 
organization and method of operations should enable it to continue to meet the 
requirements for qualification and taxation as a real estate investment trust 
and (B) the discussion in the Prospectus under the heading "Federal Income Tax 
Considerations" and in the Prospectus Supplement under the heading "Taxation of 
Holders of Common Shares of Beneficial Interest," or "Taxation of Holders of 
Preferred Shares of Beneficial Interest," or "Taxation of Holders of Depositary 
Shares," or other similar caption, as the case may be, to the extent that it 
constitutes matters of federal income tax law or legal conclusions related 
thereto, is correct in all material respects.

               (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 post-effective amendment
thereto (except for financial statements and supporting schedules and other
financial information and data included therein or omitted therefrom, as to
which such counsel need not express any view), at the time the Registration
Statement or any post-effective amendment thereto (including the filing of EQR's
Annual Report on Form 10-K with the Commission) became effective 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 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.

                                     -28-
<PAGE>
 
          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 EQR and (B) may rely as to the
qualification and good standing of each of EQR 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.  In giving their belief required in Section 5(b)(3), such counsel
may state that their belief is 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 EQR 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 Officer of EQR, dated as of such Closing Time, on behalf
of EQR and ERP, 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, (iii) EQR has complied with all agreements and satisfied
all conditions on its part to be performed or satisfied at or prior to Closing
Time and (iv) no stop order suspending the effectiveness of the Registration
Statement has been issued and no proceedings for that purpose have been
initiated or threatened by the Commission.  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 EQR'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 EQR 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 the applicable Terms Agreement, there
has been any change in the shares of beneficial interest of EQR or in the
consolidated long term debt of EQR or any decrease in the net assets of EQR, as
compared with the amounts shown in the most recent consolidated balance sheet
included or incorporated by reference in the 

                                     -29-
<PAGE>
 
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 share of beneficial interest of EQR, 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 procedures with
respect to certain 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 EQR and its subsidiaries identified in such letter.

          (e) At the applicable Closing Time, you shall have received from EQR'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.

          (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 EQR 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) At Closing Time and at any relevant Date of Delivery, the
Underwritten Securities shall have the ratings accorded by any "nationally
recognized statistical rating organization", as defined by the Commission for
purposes of Rule 436(g)(2) of the 1933 Act Regulations, if and as specified in
the applicable Terms Agreement, and EQR shall have delivered to you a letter,
dated as of such date, from each such rating organization, or other evidence
satisfactory to you, confirming that the Underwritten Securities have such
ratings.  Since the time of execution of such Terms Agreement, there shall not
have occurred a downgrading in the rating assigned to the Underwritten
Securities or any of EQR's other securities by any such rating organization, and
no such rating organization shall have publicly announced that it has under
surveillance or review its rating of the Underwritten Securities or any of EQR's
other securities.

                                     -30-
<PAGE>
 
          (h) At Closing Time, the Underwritten Securities shall have been
approved for listing, subject only to official notice of issuance, if and as
specified in the applicable Terms Agreement.

          (i) On the date of the applicable Terms Agreement, you shall have
received, in form and substance satisfactory to it, each lock-up agreement, if
any, specified in such Terms Agreement as being required to be delivered by the
persons listed therein.

          (j) 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 EQR and ERP
contained herein and the statements in any certificates furnished by EQR or 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 Officer of EQR, in their
capacities as such, on behalf of EQR and ERP, 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 EQR, 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 of them by
Section 5(b)(1) and the belief required by Section 5(b)(3) hereof.

                (3) The favorable opinion of Hogan & Hartson L.L.P., counsel for
the Underwriters and Maryland and special tax counsel for EQR, 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 EQR'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(j)(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 EQR at any time at or prior to the
applicable Closing Time, and such termination shall be without liability of any
party to any

                                     -31-
<PAGE>
 
other party except as provided in Section 4 hereof and except that
Sections 1, 6, 7 and 8 shall survive any such termination and remain in full
force and effect.

          Section 6.  Indemnification.
                      ----------------

          (a) Each of EQR and ERP hereby agrees, jointly and severally, 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 or
Section 20 of the 1934 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), or the 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 were made, not
          misleading;

               (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 based upon any such untrue
          statement or omission, or any such alleged untrue statement or
          omission, provided that (subject to Section 6(d) below), any such
          settlement is effected with the written consent of EQR and ERP; and

               (iii) against any and all expense whatsoever as incurred
          (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 proceeding
          by any governmental agency or body, commenced or threatened, or any
          claim whatsoever based upon any such untrue statement or omission, or
          any such alleged untrue statement or omission, to the extent that any
          such expense is not paid under (i) or (ii) above;
                                                        
provided, however, that this indemnity agreement shall not apply 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 

                                     -32-
<PAGE>
 
information furnished to EQR by any Underwriter concerning such Underwriter
through you expressly for use in the Registration Statement (or any amendment
thereto) and the Prospectus (or any amendment or supplement thereto).

          (b) Each Underwriter severally agrees to indemnify and hold harmless
EQR and ERP, and each person, if any, who controls EQR or ERP within the meaning
of Section 15 of the 1933 Act or Section 20 of the 1934 Act, and any trustee,
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 EQR by any Underwriter concerning such Underwriter through you
expressly for use in the Registration Statement (or any amendment thereto) and
the Prospectus (or any amendment or supplement thereto).

          (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
hereunder to the extent it is not materially prejudiced as a result thereof and
in any event shall not relieve it from any liability which it may have otherwise
than on account of this indemnity agreement.  In the case of parties indemnified
pursuant to Section 6(a) above, counsel to the indemnified parties shall be
selected by you, and, in the case of parties indemnified pursuant to Section
6(b) above, counsel to the indemnified parties shall be selected by EQR.  An
indemnifying party may participate at its own expense in the defense of any such
action; provided, however, that counsel to the indemnifying party shall not
(except with the consent of the indemnified party) also be counsel to the
indemnified party.  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.  No
indemnifying party shall, without the prior written consent of the indemnified
parties, settle or compromise or consent to the entry of any judgment with
respect to any litigation, or any investigation or proceeding by any
governmental agency or body, commenced or threatened, or any claim whatsoever in
respect of which indemnification or contribution could be sought under this
Section 6 or Section 7 hereof (whether or not the indemnified parties are actual
or potential parties thereto), unless such settlement, compromise or consent (i)
includes an unconditional release of each indemnified party from all liability
arising out of such litigation, investigation, proceeding or claim and (ii) does
not include a statement as to or an admission of fault, culpability or a failure
to act by or on behalf of any indemnified party.

                                     -33-
<PAGE>
 
          (d) If at any time an indemnified party shall have requested an
indemnifying party to reimburse the indemnified party for fees and expenses of
counsel, such indemnifying party agrees that it shall be liable for any
settlement of the nature contemplated by Section 6(a)(ii) effected without its
written consent if (i) such settlement is entered into more than 45 days after
receipt by such indemnifying party of the aforesaid request, (ii) such
indemnifying party shall have received notice of the terms of such settlement at
least 30 days prior to such settlement being entered into and (iii) such
indemnifying party shall not have reimbursed such indemnified party in
accordance with such request prior to the date of such settlement.

          Section 7.  Contribution.
                      -------------
                                                      
          If the indemnification provided for in Section 6 hereof is for any
reason unavailable to or insufficient to hold harmless an indemnified party in
respect of any losses, liabilities, claims, damages or expenses referred to
therein, then each indemnifying party shall contribute to the aggregate amount
of such losses, liabilities, claims, damages and expenses incurred by such
indemnified party, as incurred, (i) in such proportion as is appropriate to
reflect benefits received by EQR, on the one hand, and the Underwriters, on the
other hand, from the offering of the Underwritten Securities pursuant to the
applicable Terms Agreement or (ii) if the allocation provided by clause (i) is
not permitted by applicable law, in such proportion as is appropriate to reflect
not only the relative benefits referred to in clause (i) above but also the
relative fault of EQR, on the one hand, and of the Underwriters, on the other
hand, in connection with the statements or omissions which resulted in such
losses, liabilities, claims, damages or expenses, as well as any other relevant
equitable considerations.

          The relative benefits received by EQR, on the one hand, and the
Underwriters, on the other hand, in connection with the offering of the
Underwritten Securities pursuant to the applicable Terms Agreement shall be
deemed to be in the same respective proportions as the total net proceeds from
the offering of such Underwritten Securities (before deducting expenses)
received by EQR and the total underwriting discount received by the
Underwriters, in each case as set forth on the cover of the Prospectus, or, if
Rule 434 is used, the corresponding location on the Term Sheet, bear to the
aggregate initial public offering price of such Underwritten Securities as set
forth on such cover.

          The relative fault of EQR, on the one hand, and the Underwriters, on
the other hand, shall be determined by reference to, among other things, whether
any such untrue or alleged untrue statement of a material fact or omission or
alleged omission to state a material fact relates to information supplied by EQR
or by the Underwriters and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such statement or omission.

                                     -34-
<PAGE>
 
          EQR and the Underwriters agree that it would not be just and equitable
if contribution pursuant to this Section 7 were determined by pro rata
allocation (even if the Underwriters were treated as one entity for such
purpose) or by any other method of allocation which does not take account of the
equitable considerations referred to above in this Section 7. The aggregate
amount of losses, liabilities, claims, damages and expenses incurred by an
indemnified party and referred to above in this Section 7 shall be deemed to
include any legal or other expenses reasonably incurred by such indemnified
party in investigating, preparing or defending against any litigation, or any
investigation or proceeding by any governmental agency or body, commenced or
threatened, or any claim whatsoever based upon any such untrue or alleged untrue
statement or omission or alleged omission.

          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 underwritten by it and distributed to
the public were offered to the public exceeds the amount of any damages which
such Underwriter has otherwise been required to pay by reason of any such untrue
or alleged untrue statement or omission or alleged omission.

          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.

          For purposes of this Section 7, each person, if any, who controls an
Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of
the 1934 Act shall have the same rights to contribution as such Underwriter, and
each trustee of EQR, each officer of EQR who signed the Registration Statement,
and each person, if any, who controls EQR within the meaning of Section 15 of
the 1933 Act or Section 20 of the 1934 Act shall have the same rights to
contribution as EQR. The Underwriters' respective obligations to contribute
pursuant to this Section 7 are several in proportion to the number of Initial
Underwritten Securities set forth opposite their respective names in the
applicable Terms Agreement, and not joint.

          Section 8. Representations, Warranties and Agreements to Survive
                     -----------------------------------------------------
Delivery.
- --------
        
          All representations, warranties and agreements included in the
applicable Terms Agreement, or included in certificates of officers of EQR or
ERP submitted pursuant thereto, shall remain operative and in full force and
effect, regardless of any termination of the applicable Terms Agreement or
investigation made by or on behalf of any Underwriter or any controlling person,
or by or on behalf of EQR or ERP, and shall survive delivery of and payment for
the
                                       -35-
<PAGE>
 
Underwritten Securities until the obligations relating to all Underwritten
Securities have been fully satisfied in accordance with their terms.

          Section 9.  Termination of Terms Agreement.
                      -------------------------------

          (a) You may terminate the applicable Terms Agreement, by notice to
EQR, at any time at or prior to the applicable Closing Time if (i) 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, or
(ii) 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 or any change or development involving a
prospective change in national political, financial or economic conditions, in
each case, 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) trading in any of the securities
of EQR has been suspended by the Commission or any exchange or any over-the-
counter market, or if trading generally on either the New York Stock Exchange,
the American Stock Exchange or in the Nasdaq National Market has been suspended
or limited, 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 such system or by order of the Commission, the NASD, or any other
governmental authority, or (iv) if a banking moratorium has been declared by
Federal or New York authorities, or (v) the rating assigned by any nationally
recognized statistical rating organization to any Preferred Shares of EQR 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 Preferred Shares of EQR on what is commonly termed a "watch list"
for possible downgrading.  As used in this Section 9(a), the term "Prospectus"
means the Prospectus in the form first used to confirm sales of the Underwritten
Securities.

          (b) 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 EQR 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 6 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 or the relevant Date of Delivery, as the case may be, 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

                                       -36-
<PAGE>
 
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 total number of Defaulted Securities does not exceed 10% of
the total number 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 total number of Defaulted Securities exceeds 10% of the
total number of Underwritten Securities to be purchased pursuant to such Terms
Agreement, the applicable Terms Agreement (or, with respect to the Underwriters'
exercise of any applicable over-allotment option for the purchase of Option
Securities on a Date of Delivery after the Closing Time, the obligations of the
Underwriters to purchase, and EQR to sell, such Option Securities on such Date
of Delivery) 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 EQR shall have the
right to 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 as set
forth in the applicable Terms Agreement; notices to EQR and ERP shall be
directed to them at Two North Riverside Plaza, Suite 400, 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.

                                       -37-
<PAGE>
 
          Section 12.  Parties.
                       -------

          The applicable Terms Agreement shall inure to the benefit of and be
binding upon you and EQR and ERP and any Underwriter who becomes a party to such
Terms Agreement, and their respective successors.  Nothing expressed or
mentioned in 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 such Terms Agreement or any provision
therein contained.  The applicable Terms Agreement and all conditions and
provisions 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.
                       ----------------------

          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.
                       ------------

          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.

                                     -38-
<PAGE>
 
                                                                       Exhibit A


                      EQUITY RESIDENTIAL PROPERTIES TRUST
                   (a Maryland real estate investment trust)

 Common Shares of Beneficial Interest, Preferred Shares of Beneficial Interest
                             and Depositary Shares

                                TERMS AGREEMENT


To:  Equity Residential Properties Trust
     Two North Riverside Plaza
     Chicago, Illinois  60606

Ladies and Gentlemen:

          We understand that Equity Residential Properties Trust, a Maryland
real estate investment trust (the "Company"), proposes to issue and sell [_____
Common Shares of Beneficial Interest, par value $.01 per share (the "Common
Shares")] [_____ Preferred Shares of Beneficial Interest, par value $.01 per
share (the "Preferred Shares")] [in the form of _____ depositary shares (the
"Depositary Shares") each representing ____ of a Preferred Share] (such
securities also being hereinafter referred to as the "Initial Underwritten
Securities"). Subject to the terms and conditions set forth or incorporated by
reference herein, we [the underwriters named below (the "Underwriters")] offer
to purchase, severally and not jointly, the number of Underwritten Securities
[opposite their names set forth below at the purchase price set forth below, and
a proportionate share of Option Underwritten Securities set forth below, to the
extent any are purchased.

                                  Number
Underwriter                       of Initial Underwritten Securities

Total                             [$]
<PAGE>
 
          The Underwritten Securities shall have the following terms:

                                [Common Shares]

Title:
Number of shares:
Number of Option Underwritten Securities:
Initial public offering price per share: $
Purchase price per share: $
Listing requirements:
Black-out provisions:
Lock-up provisions:
Other terms and conditions:
Closing date and location:

                              [Preferred Shares]

Title:
Rank:
Ratings:
Number of shares:
Number of Option Underwritten Securities:
Dividend rate (or formula) per share: $
Dividend payment dates:
Stated value: $
Liquidation preference per share: $
Redemption provisions:
Sinking fund requirements:
Conversion provisions:
Listing requirements:
Black-out provisions:
Initial public offering price per share: $____ plus accumulated dividends, if
     any, from _____
Purchase price per share: $____ plus accumulated dividends, if any, from _____
Other terms and conditions:
Closing date and location:

                              [Depositary Shares]

Title:
Fractional Amount of Preferred Shares represented by each Depositary Share:
Ratings:
Rank:
Number of shares:
Number of Option Underwritten Securities:
<PAGE>
 
Dividend rate (or formula) per share:
Dividend payment dates:
Liquidation preference per share:
Redemption provisions:
Sinking fund requirements:
Conversion provisions:
Listing requirements:
Black-out provisions:
Initial public offering price per share: $____ plus accumulated dividends, if
     any, from _____
Purchase price per share: $____ plus accumulated dividends, if any, from _____
Other terms and conditions:
Closing date and location:

          All of the provisions contained in the document attached as Annex I
entitled "EQUITY RESIDENTIAL PROPERTIES TRUST -- Common Shares of Beneficial
Interest, Preferred Shares of Beneficial Interest and Depositary Shares--
Standard Underwriting Provisions" are hereby incorporated by reference in their
entirety herein and shall be deemed to be a part of this Terms Agreement to the
same extent as if such provisions had been set forth in full herein.  Terms
defined in such document are used herein as therein defined.

          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,

 


                               By:
                                  ----------------------------------  
                                  Authorized Signatory

                               [Acting on behalf of itself and the other named
                                     Underwriters.]

Accepted:

EQUITY RESIDENTIAL PROPERTIES TRUST


By:
   --------------------------------
   Name:
   Title:
<PAGE>
 
                                                                       Exhibit B



                      EQUITY RESIDENTIAL PROPERTIES TRUST
                   (a Maryland real estate investment trust)

                             [Title of Securities]


                           DELAYED DELIVERY CONTRACT


                                               _______________ __, 1997


Equity Residential Properties Trust
Two North Riverside Plaza
Chicago, Illinois  60606

Attention:

Ladies and Gentlemen:

          The undersigned hereby agrees to purchase from Equity Residential
Properties Trust. (the "Company"), and the Company agrees to sell to the
undersigned on ______________ __, 19__ (the "Delivery Date"),
________________________ [principal amount] shares of the Company's [insert
title of security] (the "Securities"), offered by the Company's Prospectus dated
________________ __, 19__, as supplemented by its Prospectus Supplement dated
______________ __, 19__, receipt of which is hereby acknowledged, at a purchase
price of [$_____ per share] [__% of the principal amount thereof, plus accrued
interest from ____________ __, 19__,] to the Delivery Date, and on 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 the Company 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 in written or telegraphic communication
addressed to the Company not less than five full business days prior to the
Delivery Date.


<PAGE>
 
          The obligation of the undersigned to take delivery of and make payment
for the Securities on the Delivery Date shall be subject only to the conditions
that (1) the purchase of the 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) the Company, on or before _________________
__, 19__, shall have sold to the Underwriters of the Securities (the
"Underwriters") such principal amount of the Securities as is sold to them
pursuant to the Terms Agreement dated _______________ __, 19__ between the
Company and the Underwriters.  The obligation of the undersigned to take
delivery of and make payment for the Securities shall not be affected by the
failure of any purchaser to take delivery of and make payments for the
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, the Company
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 the Company
delivered to the Underwriters in connection therewith.

          By the execution hereof, the undersigned represents and warrants to
the Company 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 the Company 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 the Company 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 the Company's
sole discretion and, without limiting the foregoing, need not be on a first-
come, first-served basis.  If this contract is acceptable to the Company, it is
requested that the Company 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 the Company and the
undersigned when such copy is so mailed or delivered.


<PAGE>
 
          This Delayed Delivery Contract 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.


EQUITY RESIDENTIAL PROPERTIES TRUST

By:________________________________
   Name:
   Title:
                  

<PAGE>
 
                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)
               ----                            ---------------------


<PAGE>
 
                  [ROSENBERG & LIEBENTRITT, P.C. LETTERHEAD]



                                 May 21, 1997



Equity Residential Properties Trust
Board of Trustees
Two North Riverside Plaza
Suite 400
Chicago, Illinois  60606

Ladies and Gentlemen:

     We are acting as counsel to Equity Residential Properties Trust, a Maryland
real estate investment trust (the "Company"), in connection with its
registration statement on Form S-3, as amended (the "Registration Statement"),
filed with the Securities and Exchange Commission relating to the proposed
public offering of up to $500,000,000 in aggregate amount of its common shares
of beneficial interest, $0.01 par value ("Common Shares"), and one or more
series of its (i) preferred shares of beneficial interest, $0.01 par value (the
"Preferred Shares"), and (ii) depositary shares representing fractional
interests in Preferred Shares (the "Depositary Shares" and, together with the
Preferred Shares and the Common Shares, the "Securities"), including the
proposed public offering of up to 8,050,000 of the Company's Depositary Shares,
each representing a 1/10 fractional interest in a share of the Company's 8.60%
Series D Cumulative Redeemable Preferred Shares of Beneficial Interest, par
value $0.01 per share (liquidation preference $250.00 per share) (liquidation
preference equivalent to $25.00 per Depositary Share) (the "Series D Preferred
Shares"), all of which Depositary Shares are to be sold by the Company as set
forth in the prospectus, dated May 12, 1997, which forms a part of the
Registration Statement (the "Prospectus"), and as set forth in the Prospectus
Supplement, dated May 16, 1997, relating to the Depositary Shares representing
the Series D Preferred Shares (the "Prospectus Supplement"). This opinion letter
is furnished to you at your request to enable the Company to fulfill the
requirements of Item 601(b)(5) of Regulation S-K, 17 C.F.R. (S) 229.601(b)(b),
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 Amended and Restated Declaration of Trust, as amended and
          supplemented, 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.
<PAGE>
 
Equity Residential Properties Trust
Board of Trustees
May 21, 1997
Page 2


     3.   The Articles Supplementary to the Declaration of Trust relating to the
          Series D Preferred Shares as filed with the Maryland State Department
          of Assessments and Taxation ( the "SDAT") on May 20, 1997 ("Articles
          Supplementary").

     4.   The 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.

     5.   Executed copies of the Terms Agreement dated May 16, 1997 among the
          Company, ERP Operating Limited Partnership, Merrill Lynch, Pierce,
          Fenner and Smith Incorporated, Smith Barney Inc., Painewebber
          Incorporated and Prudential Securities Incorporated, including the
          Standard Underwriting Provisions which are incorporated therein
          (collectively, the "Underwriting Agreement").

     6.   The Deposit Agreement dated May 21, 1997 (the "Deposit Agreement")
          between the Company and The First National Bank of Boston (the
          "Depositary").

     7.   Resolutions of the Board of Trustees of the Company adopted on
          September 8, 1995 and September 13, 1996, relating to the filing of
          the Registration Statement and on March 26, 1997 relating to the
          issuance of the Series D Preferred Shares and resolutions adopted by
          the Pricing Committee of the Board of Trustees of the Company on May
          16, 1997 relating to the designation and issuance of the Series D
          Preferred Shares and the issuance and sale of the Depositary Shares
          underlying the Series D Preferred Shares and arrangements in
          connection therewith, as certified by the Secretary of the Company on
          the date hereof as then being complete, accurate and in effect.

     We have not, except as specifically identified above, made any independent
review or investigation of factual or other matters, including the organization,
existence, good standing, assets, business or affairs of the Company. In our
examination of the aforesaid documents, we have assumed the genuiness 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 copies (including telecopies). We also have assumed the accuracy,
completeness and authenticity of the foregoing certifications of trust officers
and statements of fact, on which we are relying, and have made no independent
investigations thereof. This opinion letter is given, and all statements herein
are made, in the context of the foregoing.
<PAGE>
 
Equity Residential Properties Trust
Board of Trustees
May 21, 1997
Page 3


     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.  With
respect to the opinions below that relate to the laws of the State of Maryland,
with your consent, we rely solely on the opinion of Hogan & Hartson L.L.P., a
copy of which is attached hereto as Exhibit A.

     Based upon, subject to and limited by the foregoing, we are of the opinion
that following (i) execution and delivery of the depositary receipts
representing the Depositary Shares in the form contemplated and authorized by
the Deposit Agreement, (ii) issuance of the Series D Preferred Shares pursuant
to the terms of the Deposit Agreement and the Underwriting Agreement, (iii)
receipt by the Company of the consideration for the Depositary Shares specified
in the resolutions of the Board of Trustees and the Pricing Committee referred
to above and the Underwriting Agreement, and (iv) due execution and filing of
the Articles Supplementary with the Maryland State Department of Assessments and
Taxation, the Series D Preferred Shares will be validly issued, fully paid and
nonassessable under the Maryland REIT Statute, and the Depositary Shares will
represent valid interests therein.

     To the extent that the obligations of the Company and the rights of any
holder of the Depositary Shares under the Deposit Agreement may be dependent
upon such matters, we assume for purposes of this opinion that the applicable
Depositary is duly organized, validly existing and in good standing under the
laws of its jurisdiction of organization; that the Depositary is duly qualified
to engage in the activities contemplated by the Deposit Agreement; that the
Deposit Agreement has been duly authorized, executed and delivered by the
Depositary and constitutes a valid and binding obligation of the Depositary
enforceable against the Depositary in accordance with its terms; that the
Depositary is in compliance, with respect to acting as a Depositary under the
Deposit Agreement, with all applicable laws and regulations; and that the
Depositary has the requisite organizational and legal power and authority to
perform its obligations under the Deposit Agreement.

     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 in connection with the filing by the Company of a Current Report
on Form 8-K (the "Form 8-K") on the date of this opinion letter, which Form 8-K
will be incorporated by reference into the Registration Statement.  We hereby
consent to the filing of this opinion letter with the Form 8-K.  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.

 
<PAGE>
 
Equity Residential Properties Trust
Board of Trustees
May 21, 1997
Page 4


     We hereby consent 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. 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.


                              By: /s/ Ruth Pinkham Haring
                                -------------------------
                                  Vice President
<PAGE>

                                                                       Exhibit A
 
                      [HOGAN & HARTSON L.L.P. LETTERHEAD]



                                  May 21, 1997



Rosenberg & Liebentritt, P.C.
Two North Riverside Plaza
Suite 1515
Chicago, Illinois 60606


Ladies and Gentlemen:

          We are acting as special Maryland counsel to Equity Residential
Properties Trust, a Maryland real estate investment trust (the "Company"), in
connection with its registration statement on Form S-3, as amended (the
"Registration Statement"), previously declared effective by the Securities and
Exchange Commission relating to the proposed public offering of up to
$500,000,000 in aggregate amount of its common shares of beneficial interest,
$.01 par value ("Common Shares") and one or more series of its (i) preferred
shares of beneficial interest, $.01 par value (the "Preferred Shares"), and (ii)
depositary shares representing fractional interests in Preferred Shares (the
"Depositary Shares" and, together with the Preferred Shares and Common Shares,
the "Securities"), all of which Securities may be offered and sold by the
Company 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 of up
to 7,000,000 of the Company's Depositary Shares (the "Depositary Shares"), each
representing a 1/10 fractional interest in a share of the Company's Series D
Cumulative Redeemable Preferred Shares of Beneficial Interest, par value $.01
per share (liquidation preference $250.00 per share) (the "Series D Preferred
Shares"), all of which Depositary Shares are to be sold by the Company. This
opinion letter is furnished to you at the Company's request to enable the
Company to fulfill the requirements of Item 601(b)(5) of Regulation S-K, 17
C.F.R. (S) 229.601(b)(5), in connection with the Registration Statement.
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Rosenberg & Liebentritt, P.C.
May 21, 1997
Page 2


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

          1.   An executed copy of the Registration Statement.

          2.   The Amended and Restated Declaration of Trust, as amended, of the
               Company (the "Declaration of Trust"), as certified by the
               Maryland State Department of Assessments and Taxation (the
               "SDAT") on May 20, 1997 and the Secretary of the Company on the
               date hereof as then being complete, accurate and in effect.

          3.   The Articles Supplementary to the Amended and Restated
               Declaration of Trust relating to the Series D Preferred Shares as
               filed with the SDAT on May 20, 1997 ("Articles Supplementary").

          4.   The 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.

          5.   Copy of the Standard Underwriting Provisions dated May 16, 1997
               of the Company and executed copies of the Terms Agreement dated
               May 16, 1997 among the Company, Merrill Lynch & Co., Merrill
               Lynch, Pierce, Fenner and Smith Incorporated, Smith Barney Inc.,
               PaineWebber Incorporated and Prudential Securities Incorporated
               (collectively, the "Underwriting Agreement").

          6.   The Deposit Agreement dated May 21, 1997 between the Company and
               The First National Bank of Boston (the "Deposit Agreement").

          7.   Resolutions of the Board of Trustees of the Company adopted on
               September 8, 1995 and September 13, 1996, relating to the filing
               of the Registration Statement and on March 26, 1997 relating to
               the issuance of the Series D Preferred Shares and resolutions
               adopted by the Pricing Committee of the Board of Trustees on May
               16, 1997 relating to the designation and issuance of the Series D
               Preferred Shares and the issuance and sale of the Depositary
               Shares underlying the Series D Preferred 
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Rosenberg & Liebentritt, P.C.
May 21, 1997
Page 3



               Shares and arrangements in connection therewith, as certified by
               the Secretary of the Company on the date hereof as then being
               complete, accurate and in effect.

          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 copies (including telecopies). We also have assumed
the accuracy, completeness and authenticity of the foregoing certifications of
trust officers and statements of fact, on which we are relying, and have made no
independent investigatons thereof. This opinion letter is given, and all
statements herein are made, in the context of the foregoing.

          This opinion letter is based as to matters of law solely on Title 8 of
the Corporation and Associations Article of the Annotated Code of Maryland (the
"Maryland REIT Statute").  We express no opinion herein as to any other laws,
statutes, regulations, or ordinances.

          Based upon, subject to and limited by the foregoing, we are of the
opinion that following issuance of the Series D Preferred Shares underlying the
Depositary Shares pursuant to the terms of the Underwriting Agreement and
receipt by the Company of the consideration for the Series D Preferred Shares
specified in the resolutions of the Board of Trustees and the Pricing Committee
referred to above, the Series D Preferred Shares will be validly issued, fully
paid and nonassessable under the Maryland REIT Statute.

          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 Company of a
Current Report on Form 8-K (the "Form 8-K") on the date of this opinion letter,
which Form 8-K will be incorporated by reference into the Registration
Statement.  We hereby consent to the filing of this opinion letter with the Form
8-K.  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 to the reference to this firm under the caption
"Legal Matters" in the prospectus constituting a part of the Registration
Statement.  
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Rosenberg & Liebentritt, P.C.
May 21, 1997
Page 4



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,



                                    /s/ Hogan & Hartson L.L.P.
                                    HOGAN & HARTSON L.L.P.

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                                 May 21, 1997

Board of Trustees
Equity Residential Properties Trust
Two North Riverside Plaza, Suite 400
Chicago, Illinois 60606

Ladies and Gentlemen:

          We have acted as special tax counsel to Equity Residential Properties 
Trust, a Maryland real estate investment trust (the "Company"), in connection 
with certain aspects related to its registration statement on Form S-3 (the 
"Registration Statement") (No. 333-12211) previously declared effective by the 
Securities and Exchange Commission relating to the proposed public offering of 
up to $500,000,000 in aggregate amount of its common shares of beneficial 
interest, $.01 par value ("Common Shares") and one or more series of its (i) 
preferred shares of beneficial interest, $.01 par value (the "Preferred
Shares"), and (ii) depositary shares representing fractional interests in
Preferred Shares (the "Depositary Shares" and, together with the Preferred
Shares and Common Shares, the "Securities"), all of which Securities may be
offered and sold by the Company 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 of up to 7,000,000 of the Company's Depositary Shares (the
"Depositary Shares"), each representing a 1/10 fractional interest in a share of
the Company's Series D Cumulative Redeemable Preferred Shares of Beneficial
Interest, par value $.01 per share (liquidation preference $250.00 per share)
(the "Series D Preferred Shares"), all of which Depositary Shares are to be sold
by the Company. This opinion letter is furnished to enable the Company to
fulfill the requirements of Item 601(b)(8) of Regulation S-K, 17 C.F.R. (S)
229.601(b)(8), in connection with the Registration Statement.

          The opinion set forth in this letter is based on relevant provisions 
of the Internal Revenue Code of 1986, as amended (the "Code"), Treasury 
Regulations thereunder (including proposed and temporary Regulations), and 
interpretations of
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Equity Residential Properties Trust
May 21, 1997
Page 2

the foregoing as expressed in court decisions, the legislative history, and
existing administrative rulings and practices of the Internal Revenue Service
(including its practices and policies in issuing private letter rulings, which
are not binding on the Internal Revenue Service except with respect to a
taxpayer that receives such a ruling), all as of the date hereof. These
provisions and interpretations are subject to change, which may or may not be
retroactive in effect, that might result in modifications of our opinion. Our
opinion does not foreclose the possibility of a contrary determination by the
Internal Revenue Service or a court of competent jurisdiction, or of a contrary
position by the Internal Revenue Service or the Treasury Department in
regulations or rulings issued in the future.

          In rendering our opinion, we have examined such statutes, regulations,
records, certificates and other documents as we have considered necessary or
appropriate as a basis for such opinion, including the Prospectus dated May 12,
1997, and the Prospectus Supplement dated May 16, 1997 relating to the
Depositary Shares.

          In our review, we have assumed, with your consent, that all of the
representations and statements set forth in the documents we reviewed are true
and correct, and all of the obligations imposed by any such documents on the
parties thereto have been and will be performed or satisfied in accordance with
their terms. We also have assumed the genuineness of all signatures, the proper
execution of all documents, the authenticity of all documents submitted to us as
originals, the conformity to originals of documents submitted to us as copies,
and the authenticity of the originals from which any copies were made.

          For the purposes of our opinion, we have not made an independent
investigation of the facts set forth in the documents we reviewed. We
consequently have assumed that the information presented in such documents or
otherwise furnished to us accurately and completely describes all material facts
relevant to our opinion. No facts have come to our attention, however, that
would cause us to question the accuracy and completeness of such facts or
documents in a material way.

          We assume for the purposes of this opinion that the Company is a
validly organized and duly incorporated real estate investment trust under the
laws of the State of Maryland.
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Equity Residential Properties Trust
May 21, 1997
Page 3



          Based upon, and subject to, the foregoing, we are of the opinion that
the discussion in the Prospectus Supplement under the heading "Certain Federal
Income Tax Considerations," to the extent that it constitutes matters of law or
legal conclusions, is correct in all material respects.

          We note that we heretofore have rendered an opinion to the Company,
included as an exhibit to the Registration Statement, to the effect that the
Company qualifies as a REIT. We reaffirm that opinion to you as of the date
hereof. The Company shareholders, however, will vote on or about May 28, 1997,
on a merger transaction in which the Company will merge into Wellsford
Residential Property Trust ("Wellsford"), with Wellsford being the surviving
entity in the merger (the "Surviving Trust") and the Company's shareholders
(including purchasers of the Depositary Shares) becoming, by operation of law,
shareholders of the Surviving Trust. The qualification of the Surviving Trust as
a REIT will depend, inter alia, upon the qualification of Wellsford as a REIT
prior to the Merger and the impact of Wellsford's assets and operations
following the Merger on the ability of the Surviving Trust to continue to meet
the requirements for qualification as a REIT following the Merger. Our prior
opinion, referenced above and reconfirmed as of the date hereof, does not
address the impact of the Merger on the continued qualification of the Company
as a REIT. Rudnick & Wolfe, however, has served as special tax counsel to the
Company with respect to the Merger and is expected, as a condition to the
Merger, to provide an opinion to the Company to the effect that the Surviving
Trust will qualify as a REIT following the Merger.

          We assume no obligation to advise you of any changes in the foregoing
subsequent to the date of this opinion letter, and we are not undertaking to
update the opinion letter from time to time. This opinion letter has been
prepared solely for your use in connection with the filing by the Company of a
Current Report on Form 8-K (the "Form 8-K") on the date of this opinion letter,
which Form 8-K will be incorporated by reference into the Registration
Statement. We hereby consent to the filing of this opinion letter with the Form
8-K. 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.

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Equity Residential Properties Trust
May 21, 1997
Page 4



          We hereby consent to the reference to this firm under the caption
"Legal Matters" in the Prospectus constituting a part of the Registration
Statement. In giving this consent, we do not admit that we are an "expert"
within the meaning of the Securities Act of 1933, as amended.


                                        Very truly yours,


                                        /s/ Hogan & Hartson L.L.P.

                                        Hogan & Hartson L.L.P.


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