ERP OPERATING LTD PARTNERSHIP
S-3, EX-1, 2000-08-25
REAL ESTATE INVESTMENT TRUSTS
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                        ERP OPERATING LIMITED PARTNERSHIP
                        (an Illinois limited partnership)

                                 Debt Securities

                        STANDARD UNDERWRITING PROVISIONS

                                                 August 25, 2000

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

                  Whenever ERP determines to make an offering of Securities
through you or through an underwriting syndicate managed by you, ERP will
enter into an agreement (the "Terms Agreement") providing for the sale of
such Securities (the "Underwritten Securities") to, and the purchase and
offering thereof by, you and such other underwriters, if any, selected by you
as having 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 Underwritten
Securities shall specify the initial principal amount of Underwritten
Securities to be initially issued (the "Initial Underwritten Securities"),
the names of the Underwriters participating in such offering (subject to
substitution as provided in Section 10 hereof), the principal amount of
Initial Underwritten Securities which each such Underwriter severally agrees
to purchase, the names of Underwriters acting as co-managers, if any, in
connection with such offering, the price at which the Initial Underwritten
Securities are to be purchased by the Underwriters from ERP, the initial
public offering price, if any, of the Initial Underwritten Securities,

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the time and place of delivery and payment, any delayed delivery arrangements
and any other variable terms of the Initial Underwritten Securities
(including, but not limited to, current ratings, designations, denominations,
interest rates or formulas, interest payment dates, maturity dates and
redemption or repayment provisions applicable to the Initial Underwritten
Securities). In addition, each Terms Agreement shall specify whether ERP has
agreed to grant to the Underwriters an option to purchase additional
Underwritten Securities to cover over-allotments, if any, and the aggregate
principal amount of Underwritten Securities subject to such option (the
"Option Securities"). As used herein, the term "Underwritten Securities"
shall include the Initial Underwritten Securities and all or any portion of
the Option Securities agreed to be purchased by the Underwriters as provided
herein, if any. The Terms Agreement, which shall be substantially in the form
of Exhibit A hereto, may take the form of an exchange of any standard form of
written telecommunication between you and ERP. 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 as 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.

                  ERP has filed with the Securities and Exchange Commission
(the "Commission") a registration statement on Form S-3 (No. 333-[_ _ _ _ _])
for the registration of the Securities under the Securities Act of 1933, as
amended (the "1933 Act"), and the offering thereof from time to time in
accordance with Rule 430A or Rule 415 of the rules and regulations of the
Commission under the 1933 Act (the "1933 Act Regulations") and ERP has filed
such amendments thereto as may have been required prior to the execution of
the applicable Terms Agreement. Such registration statement and any successor
registration statements (as amended, if applicable) have been declared
effective by the Commission and the Indenture has been qualified under the
Trust Indenture Act of 1939, as amended (the "1939 Act"). Such registration
statements and the prospectuses constituting parts thereof (including in each
case the information, if any, deemed to be part thereof pursuant to Rule
430A(b) of the 1933 Act Regulations), and each prospectus supplement relating
to the offering of Underwritten Securities pursuant to Rule 415 of the 1933
Act Regulations (the "Prospectus Supplement"), including all documents
incorporated therein by reference, as from time to time amended or
supplemented pursuant to the 1933 Act, the Securities Exchange Act of 1934,
as amended (the "1934 Act") or otherwise, are collectively referred to herein
as the "Registration Statement" and the "Prospectus," respectively; provided,
that if any revised prospectus shall be provided to you by ERP for use in
connection with the offering of Underwritten Securities which differs from
the Prospectus on file at the Commission at the time the Registration
Statement became effective (whether or not such revised prospectus is
required to be filed by ERP pursuant to Rule 424(b) of the 1933 Act
Regulations), the term "Prospectus" shall refer to each such revised

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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 ERP 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 ERP 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 ERP 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 pursuant to its Electronic Data Gathering,
Analysis and Retrieval system ("EDGAR").

                  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, Equity Residential Properties Management Corp. III, a Delaware
corporation, Wellsford Holly Management, Inc., a Washington corporation,
Evans Withycombe Management, Inc., an Arizona corporation, Equity Residential
Properties Management Limited Partnership, an Illinois limited partnership,
Equity Residential Properties Management Limited Partnership II, an Illinois
limited partnership and Lexford Properties Management, LLC, a Delaware
limited liability company (collectively, the "Management Corporations"). The
term "subsidiary" or "subsidiaries," when used with respect to ERP, shall
include (i) the Management Corporations, (ii) each consolidated subsidiary of
ERP, (iii) any entity the operations of which are included in the
consolidated financial statements for ERP for the most recent fiscal period
included in the Prospectus and (iv) any subsidiary (other than ERP) of Equity
Residential Properties Trust, a Maryland real estate investment trust and
ERP's

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sole general partner ("EQR"), which owns an interest in any entity described
in clause (ii) above.

                  SECTION 1.  REPRESENTATIONS AND WARRANTIES.

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

                           (i) The Registration Statement and the Prospectus, at
                  the time the Registration Statement and any post-effective
                  amendment thereto (including the filing of ERP'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, 1933 Act Regulations and the
                  1939 Act and the rules and regulations thereunder (the "1939
                  Act Regulations"); the Registration Statement, at the time the
                  Registration Statement became effective, did not, and as of
                  each Representation Date, will not, contain an untrue
                  statement of a material fact or omit to state a material fact
                  required to be stated therein or necessary to make the
                  statements therein not misleading; the Prospectus, as of 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 the Prospectus made in reliance
                  upon, and in conformity with, information furnished to ERP in
                  writing by any Underwriter through you expressly for use in
                  the Registration Statement or Prospectus or to that part of
                  the Registration Statement which shall constitute the
                  Statement of Eligibility and Qualification on Form T-1 under
                  the 1939 Act (the "Statement of Eligibility") of the Trustee
                  under the Indenture. If EQR elects to rely upon Rule 434 of
                  the 1933 Act Regulations, EQR will comply with the
                  requirements of Rule 434.

                           (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.

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

                           (vi) Since the respective dates as of which
                  information is given in the Registration Statement and the
                  Prospectus, except as otherwise stated or contemplated
                  therein, (A) there has been no material adverse change in the
                  financial condition or in the earnings, assets, business
                  affairs or business prospects of ERP and its subsidiaries,
                  considered as a single enterprise, whether or not arising

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                  in the ordinary course of business, (B) there have been no
                  material transactions entered into by ERP or any of its
                  subsidiaries, other than transactions in the ordinary
                  course of business, which are material with respect to ERP
                  and its subsidiaries considered as a single enterprise, (C)
                  neither ERP nor any of its subsidiaries has incurred any
                  material obligation or liability, direct, contingent or
                  otherwise and (D) there has been no material change in the
                  short-term debt or long-term debt of ERP.

                           (vii) ERP and each of its subsidiaries has been duly
                  formed and is validly existing and is in good standing as a
                  partnership, corporation or limited liability company ("LLC")
                  under the laws of its jurisdiction of organization, with
                  partnership, corporate or LLC power and authority to own,
                  lease and operate its properties and conduct its business as
                  described in the Prospectus and to enter into and perform its
                  obligations under the applicable Terms Agreement.

                           (viii) ERP and each of its subsidiaries is duly
                  qualified or registered as a foreign partnership, corporation
                  or LLC and is in good standing to transact business in each
                  jurisdiction in which such qualification is required whether
                  by the nature of its business or its ownership or leasing of
                  property, except where the failure to so qualify would not
                  have a material adverse effect on the financial condition or
                  the earnings, assets or business affairs of ERP and its
                  subsidiaries considered as a single enterprise (a "Material
                  Adverse Effect").

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

                           (x) Except for transactions described in the
                  Prospectus, there are no outstanding rights, warrants or
                  options to acquire, or instruments convertible into or
                  exchangeable for, or agreements or

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                  understandings with respect to the sale or issuance of, any
                  shares of capital stock of or partnership or other equity
                  interest in ERP, EQR or any subsidiary of ERP except for OP
                  Units which may be issued pursuant to multifamily property
                  acquisition agreements which are not material in amount.

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

                           (xii) ERP has full partnership power and authority to
                  enter into and to perform its obligations under the Indenture,
                  the applicable Terms Agreement and the Delayed Delivery
                  Contracts (as defined in Section 2 hereof), if any, and as of
                  each Representation Date, the applicable Terms Agreement and
                  the Delayed Delivery Contracts, if any, will have been duly
                  authorized, executed and delivered by ERP, and each is or will
                  be a valid and binding obligation of ERP, enforceable against
                  ERP in accordance with its terms, except as (A) the
                  enforceability thereof may be limited by bankruptcy,
                  insolvency, reorganization, moratorium or similar laws
                  affecting creditors' rights generally, (B) rights of
                  acceleration and the availability of equitable remedies may be
                  limited by equitable principles of general applicability and
                  (C) rights to indemnity and contribution hereunder may be
                  limited by state or federal securities laws or the public
                  policy underlying such laws.

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

                           (xiv) The Underwritten Securities (A) have been duly
                  authorized by ERP and, when executed, authenticated, issued
                  and

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

                           (xv) There is no action, suit or proceeding before or
                  by any court or governmental agency or body, now pending, or,
                  to the knowledge of ERP or EQR, threatened, against or
                  affecting ERP or any of its subsidiaries which is required to
                  be disclosed in the Prospectus (other than as disclosed
                  therein) or which might result in any material adverse change
                  in the financial condition, or in the earnings, assets or
                  business affairs of ERP and its subsidiaries considered as a
                  single enterprise (a "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, Delayed
                  Delivery Contracts or the Indenture or the transactions
                  contemplated therein; all pending legal or governmental
                  proceedings to which ERP or any of its subsidiaries is a party
                  or of which any of their properties or assets is the subject
                  which 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 ERP or any of its subsidiaries which would be
                  required to be filed as exhibits to the Registration Statement
                  by the 1933 Act or the 1933 Act Regulations which have not
                  been filed as exhibits to the Registration Statement.

                           (xvi) None of ERP or any of its subsidiaries is
                  required to own or possess any trademarks, service marks,
                  trade names or copyrights to conduct the business operated by
                  it as of any Representation Date, other than those whereby the
                  failure to possess or own would not have a Material Adverse
                  Effect; and none of ERP 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

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                  circumstances which would render any trademarks, service
                  marks, trade names or copyrights invalid or inadequate to
                  protect the interest of ERP 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.

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

                           (xviii) Each of ERP and its subsidiaries has all
                  consents, authorizations, approvals, orders, certificates and
                  permits (collectively, the "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 ERP or any of its subsidiaries has received any
                  written notice of proceedings relating to the revocation or
                  modification of any such consent, authorization, approval,
                  order, certificate or permit which, singly or in the
                  aggregate, if the subject of an unfavorable decision, ruling
                  or finding, would result in a Material Adverse Effect.

                           (xix) 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 1934 Act and the rules
                  and regulations of the Commission under the 1934 Act (the
                  "1934 Act Regulations"), and, when read together with the
                  other information in the Prospectus, at the time the
                  Registration Statement became effective, at the date of the
                  Prospectus, as of each Representation Date, 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

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                  be stated therein or necessary to make the statements
                  therein, in the light of the circumstances under which they
                  were made, not misleading.

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

                           (xxi) None of ERP nor any of its subsidiaries is in
                  violation of its partnership agreement, charter document,
                  bylaws or LLC agreement, 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 the Indenture and the consummation of the
                  transactions contemplated 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 actions 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 ERP or any of its
                  subsidiaries, pursuant to any contract, indenture, mortgage,
                  loan agreement, note, lease or other instrument to which ERP
                  or any of its subsidiaries is a party or by which it or any of
                  them may be bound or affected, or to which any of their
                  properties or assets is subject, nor will such action result
                  in any violation of the provisions of the partnership
                  agreement, charter, bylaws or LLC agreement of ERP or any of
                  its subsidiaries, or any applicable law, regulation, ruling,
                  order, judgment, administrative regulation or administrative
                  or court decree.

                           (xxii) ERP has not taken and will not take, directly
                  or indirectly, any action prohibited by Regulation M.

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

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

                           (xxv) Each of ERP and its subsidiaries has obtained
                  title insurance on all of the properties owned by each of them
                  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.

                           (xxvi) 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 ERP or any
                  of its subsidiaries; except as disclosed in the Prospectus,
                  none of ERP or any of its subsidiaries holds participating
                  interests in such mortgages and deeds of trust.

                           (xxvii) Each of the partnership agreements and LLC
                  agreements to which any of ERP or its subsidiaries is a party
                  has been duly authorized, executed and delivered by such party
                  and constitutes the valid agreement thereof, enforceable in
                  accordance with its terms, except as (A) the enforceability
                  thereof may be limited by bankruptcy, insolvency,
                  reorganization, moratorium or similar laws affecting
                  creditors' rights generally and (B) the availability of
                  equitable remedies may be limited by equitable principles of
                  general applicability; and the execution, delivery and
                  performance of any of


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                  such agreements did not, at the time of execution and
                  delivery, and does not constitute a breach of, or default
                  under, the partnership agreement, charter, bylaws or other
                  governing documents of such party or any material contract,
                  lease or other instrument to which such party is a party or
                  by which its properties may be bound or any law,
                  administrative regulation or administrative or court decree.

                           (xxviii) 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 ERP 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)
                  ERP 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 ERP 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 ERP or any of its subsidiaries
                  relating to Hazardous Materials or any Environmental Laws.

                           (xxix) EQR has operated and intends to continue to
                  operate in such a manner as to qualify to be taxed as a "real
                  estate investment trust" under the Internal Revenue Code of
                  1986, as amended (the "Code").

                           (xxx) Each of ERP and its subsidiaries has filed all
                  federal, state, local and foreign income tax returns which
                  have been required to


                                     -12-
<PAGE>

                  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 for
                  which an extension has been granted or 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.

                           (xxxi) Neither ERP nor any subsidiary is, or as a
                  result of the transactions contemplated by the Prospectus
                  would be, required to make any filing or to register under the
                  Investment Company Act of 1940, as amended, or is or will
                  become a "holding company" or a "subsidiary company" of a
                  "registered holding company," as defined in the Public Utility
                  Holding Company Act of 1935, as amended.

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

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

                  SECTION 2.        PURCHASE AND SALE.

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

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


                                     -13-
<PAGE>

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 may not be earlier than
two full business days after the exercise of said option, unless otherwise
agreed upon by you and ERP. 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 aggregate
principal amount of Option Securities then being purchased which the
aggregate principal amount of Initial Underwritten Securities each such
Underwriter has agreed to purchase as set forth in the applicable Terms
Agreement bears to the total aggregate principal amount of Initial
Underwritten Securities, subject to such adjustments as you in your
discretion shall make to eliminate any sales or purchases of fractional
Underwritten Securities.

                  (c) Payment of the purchase price for, and delivery of, the
Underwritten Securities to be purchased by the Underwriters shall be made at
such place as shall be agreed upon by you and ERP, 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 ERP (each such time and date being referred to as a "Closing Time"). In
addition, if any or all of the Option Securities are purchased by the
Underwriters, payment of the purchase price for, and delivery of certificates
representing, such Option Securities, shall be made at such place as shall be
agreed upon by you and ERP on each Date of Delivery as specified in the notice
from you to ERP. Unless otherwise specified in the applicable Terms Agreement,
payment shall be made to ERP by wire transfer to accounts designated by ERP of
immediately available funds payable to the order of ERP against delivery to you
for the respective accounts of the Underwriters of the Underwritten Securities
to be purchased by them. The Underwritten Securities shall be in such authorized
denominations and registered in such names as you may request in writing at
least two business days prior to the applicable Closing Time or Date of
Delivery, as the case may be. The Underwritten Securities, which may be in
temporary form, will be made available for examination and packaging by you on
or before the first business day prior to the applicable Closing Time or Date of
Delivery, as the case may be.

                  If authorized by the applicable Terms Agreement, the
Underwriters named therein may solicit offers to purchase Underwritten
Securities from ERP pursuant to delayed delivery contracts ("Delayed Delivery
Contracts") substantially in the form of Exhibit B hereto with such changes
therein as ERP may approve. As compensation for arranging Delayed Delivery
Contracts, ERP will pay to you at Closing Time, for the respective accounts of
the Underwriters, a fee specified in the applicable Terms Agreement for each of
the Underwritten Securities for which


                                     -14-
<PAGE>

Delayed Delivery Contracts are made at the applicable Closing Time as is
specified in the applicable Terms Agreement. Any Delayed Delivery Contracts
are to be with institutional investors of the types described in the
Prospectus. At the applicable Closing Time, ERP will enter into Delayed
Delivery Contracts (for not less than the minimum principal amount of
Underwritten Securities per Delayed Delivery Contract specified in the
applicable Terms Agreement) with all purchasers proposed by the Underwriters
and previously approved by ERP as provided below, but not for an aggregate
principal amount of Underwritten Securities in excess of that specified in
the applicable Terms Agreement. The Underwriters will not have any
responsibility for the validity or performance of Delayed Delivery Contracts.

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

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

                  SECTION 3.  COVENANTS.

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

                  (a) Immediately following the execution of the applicable
Terms Agreement, ERP will prepare a Prospectus Supplement setting forth the
principal amount of Underwritten Securities covered thereby and their terms not
otherwise specified in the Prospectus or the Indenture pursuant to which the
Underwritten Securities are being issued, the names of the Underwriters
participating in the offering and the principal amount of Underwritten
Securities which each severally has agreed to purchase, the names of the
Underwriters acting as co-managers in connection with the offering, the price at
which the Underwritten Securities are to be purchased by the Underwriters from
ERP, the initial public offering price, if any, the selling concession and
reallowance, if any, any delayed delivery arrangements,


                                     -15-
<PAGE>

and such other information as you and ERP deem appropriate in connection with
the offering of the Underwritten Securities; and ERP will promptly transmit
copies of the Prospectus Supplement to the Commission for filing pursuant to
Rule 424(b) of the 1933 Act Regulations within the time period required by
such Rule and will 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 contain the
same text as any electronically transmitted copies filed with the Commission
pursuant to EDGAR, except to the extent permitted by Regulation S-T.

                  (b) ERP will notify you immediately, and confirm such notice
in writing, of (i) the effectiveness 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 ERP will make every reasonable effort
to prevent the issuance of any such stop order and, if any stop order is issued,
to obtain the lifting thereof at the earliest possible moment.

                  (c) At any time when the Prospectus is required to be
delivered under the 1933 Act or the 1934 Act in connection with sales of the
Underwritten Securities, ERP will give you notice of its intention to file or
prepare any amendment to the Registration Statement (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 ERP
proposes for use by you in connection with the offering of Underwritten
Securities which differs from the prospectus on file at the Commission at the
time the Registration Statement 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) ERP 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


                                     -16-
<PAGE>

documents incorporated or deemed to be incorporated by reference therein) as you
reasonably request.

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

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

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


                                     -17-
<PAGE>

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

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

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

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

                  SECTION 4.  PAYMENT OF EXPENSES.

                  ERP will pay all expenses incident to the performance of its
obligations under the applicable Terms Agreement, including (i) the printing and
filing of the Registration Statement as originally filed and of each amendment
thereto, (ii) the printing and filing of 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 ERP's counsel and accountants, (v) the
qualification of the Underwritten Securities under securities laws and real
estate syndication laws in accordance with the provisions of Section 3(g),
including filing fees and the fees and disbursements of counsel for the
Underwriters in connection therewith and in connection with the preparation of
the Blue Sky Survey, (vi) the printing and delivery to the Underwriters of
copies of the Registration Statement as originally filed and of each amendment
thereto, and of the Prospectus and any amendments or supplements thereto, (vii)
the printing and delivery to the Underwriters of copies of the Indenture, (viii)
any fees charged by nationally recognized statistical rating


                                     -18-
<PAGE>

organizations for the rating of the Underwritten Securities, (ix) the fees
and expenses, if any, incurred with respect to the listing of the
Underwritten Securities on any national securities exchange or quotation
system, (x) the fees and expenses, if any, incurred with respect to any
filing with the National Association of Securities Dealers, Inc. (including
fees and disbursements of counsel for the Underwriters in connection
therewith), (xi) the fees and expenses of the Trustee, and (xii) the
preparation, issuance and delivery to the Depository Trust Company for credit
to your account of any global note registered in the name of Cede & Co., as
nominee for the Depository Trust Company.

                  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)(v), ERP
shall reimburse the Underwriters named in such Terms Agreement for all of their
out-of-pocket expenses, including the reasonable fees and disbursements of
counsel for the Underwriters.

                  SECTION 5.  CONDITIONS OF UNDERWRITERS' OBLIGATIONS.

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

                  (a) At the applicable Closing Time, (i) no stop order
suspending the effectiveness of the Registration Statement shall have been
issued under the 1933 Act or proceedings therefor initiated or threatened by the
Commission, (ii) 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 long-term debt securities of
ERP as of the date of the applicable Terms Agreement shall not have been lowered
since such date nor shall any such rating organization have publicly announced
that it has placed any long-term debt securities of ERP on what is commonly
termed a "watch list" for possible downgrading, and (iv) there shall not have
come to your attention any facts that would cause you to believe that the
Prospectus, together with the applicable Prospectus Supplement, at the time it
was required to be delivered to purchasers of the Underwritten Securities,
included an untrue statement of a material fact or omitted to state a material
fact necessary in order to make the statements therein, in light of the
circumstances existing at such time, not misleading. A prospectus containing
information relating to the description of the Underwritten Securities, 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


                                     -19-
<PAGE>


amendment providing such information shall have been filed and declared
effective in accordance with the requirements of Rule 430A), or, if ERP 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).

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

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

                                    (i) ERP is authorized and exists as an
                  Illinois limited partnership under the Illinois Revised
                  Uniform Limited Partnership Act, and has the power and
                  authority to own, lease and operate its properties and conduct
                  its business as described in the Prospectus; and, to counsel's
                  knowledge, is duly qualified and in good standing and
                  authorized to transact business in any jurisdiction in which
                  the conduct of its business or its ownership or leasing of
                  property requires such qualification, except where the failure
                  to be so qualified or in good standing would not have a
                  Material Adverse Effect.

                                    (ii) Each of ERP's subsidiaries has been
                  duly formed and is validly existing and in good standing under
                  the laws of the jurisdiction of its formation, has the power
                  and authority to own, lease and operate its properties and to
                  conduct its business as described in the Prospectus, and, to
                  counsel's knowledge, is duly qualified and in good standing
                  and authorized to transact business in any jurisdiction in
                  which the conduct of its business or its ownership or leasing
                  of property requires such qualification, except where the
                  failure to be validly existing, so qualified or in good
                  standing would not have a Material Adverse Effect; all of the
                  issued and outstanding shares of 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 ERP, EQR or another subsidiary, are owned
                  by ERP or another subsidiary, to such counsel's knowledge,
                  directly, free and clear of any security interest, mortgage,
                  pledge, lien, encumbrance, claim or equity, except where
                  any such failure would not have a Material Adverse Effect.
                  None of the outstanding shares of capital stock, LLC
                  interests or partnership interests of any subsidiary were
                  issued in violation of statutory preemptive rights or to
                  counsel's knowledge, contractual rights of any security holder
                  of such subsidiary to subscribe for more shares, LLC interests
                  or partnership interests, except where such violation would
                  not have a Material Adverse Effect.


                                       -20-
<PAGE>


                                    (iii) The Indenture has been duly qualified
                  under the 1939 Act and has been duly authorized, executed and
                  delivered by ERP and (assuming due authorization, execution
                  and delivery by the Trustee) constitutes a valid and binding
                  obligation of ERP enforceable against ERP in accordance with
                  its terms except as (A) the enforceability thereof may be
                  limited by bankruptcy, insolvency, reorganization, moratorium,
                  fraudulent transfer or similar laws affecting creditors'
                  rights generally, and (B) the availability of equitable
                  remedies may be limited by equitable principles of general
                  applicability, and except that a waiver of rights under any
                  usury law may be unenforceable.

                                    (iv) The Underwritten Securities have been
                  duly and validly authorized by all necessary action and, when
                  executed, authenticated and delivered in accordance with the
                  Indenture and against payment therefor specified in the
                  applicable Terms Agreement or the Delayed Delivery Contracts,
                  if any, will be entitled to the benefits of the Indenture and
                  will be valid and legally binding obligations of ERP
                  enforceable against ERP in accordance with their terms, except
                  as (A) the enforceability thereof may be limited by
                  bankruptcy, insolvency, reorganization, moratorium, fraudulent
                  transfer, or similar laws affecting creditors' rights
                  generally, and (B) the availability of equitable remedies may
                  be limited by equitable principles of general applicability,
                  and except that a waiver of rights under any usury law may be
                  unenforceable.

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

                                    (vi) The execution and delivery of the
                  applicable Terms Agreement, the Indenture and the Underwritten
                  Securities by ERP, and the performance by ERP of its
                  obligations thereunder, and the consummation of the
                  transactions contemplated thereby, do not result in a
                  violation of any provision of the partnership agreement of ERP
                  or, to counsel's knowledge, any other applicable law,
                  administrative regulation or administrative or court decree,
                  and will not, to such counsel's knowledge, conflict with or
                  constitute a breach of, or default under, or result in the
                  creation or imposition of any lien, charge or encumbrance upon
                  any property or assets of ERP or any of its subsidiaries
                  pursuant to any agreement or other instrument that is binding
                  upon ERP or any subsidiary, or to which any of their
                  properties or assets is subject.


                                       -21-
<PAGE>


                                    (vii) 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.

                                    (viii) The Underwritten Securities and the
                  Indenture conform in all material respects to the descriptions
                  thereof contained in the Prospectus.

                                    (ix) No consent, approval, authorization, or
                  order of, or qualification with, any governmental body or
                  agency and no consent, approval, or authorization of any
                  person other than ERP is required for the performance by ERP
                  of its obligations under the applicable Terms Agreement, the
                  Indenture or the Underwritten Securities, 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.

                                    (x) To the knowledge of counsel, there are
                  no (A) legal or governmental proceedings pending or
                  threatened which are required to be disclosed in the
                  Registration Statement, other than those disclosed therein,
                  and all pending legal or governmental proceedings to which ERP
                  or any of its subsidiaries is a party or to which any of their
                  property is subject which are not described in the
                  Registration Statement, including ordinary routine litigation
                  incidental to the business, are, considered in the aggregate,
                  not material or (B) statutes, regulations, contracts,
                  indentures, mortgages, loan agreements, notes, leases,
                  instruments or other documents that are required to be
                  described in the Prospectus or to be filed as exhibits to the
                  Registration Statement that are not described or filed as
                  required.

                                    (xi) None of ERP, EQR or any of their
                  subsidiaries is required to be registered under the 1940 Act.

                                    (xii) The information (A) in the Prospectus
                  and applicable Prospectus Supplement under the headings
                  "Description of Debt Securities," "Underwriting" and, if
                  applicable, "Federal Income Tax Consequences" and (B) in ERP's
                  most recent Annual Report on Form 10-K, and ERP's most recent
                  Quarterly Report on Form 10-Q if applicable, under the heading
                  "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,
                  to such counsel's knowledge with respect to paragraph (B)
                  above, is correct in all material respects.


                                       -22-
<PAGE>


                                    (xiii) The Registration Statement and
                  Prospectus (except for financial statements and schedules
                  and other financial and statistical data included therein,
                  or the Statement of Eligibility, as to which such counsel
                  need not express any opinion), excluding the documents
                  incorporated by reference therein, as of their respective
                  effective or issue dates comply as to form in all material
                  respects with the requirements for registration statements
                  on Form S-3 under the 1933 Act, the 1939 Act, the 1933 Act
                  Regulations and the 1939 Act Regulations.

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

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

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

                                    (xvii) ERP has qualified and, based upon its
                  organization and its proposed method of operation, ERP will
                  continue to qualify to be treated as a partnership for federal
                  income tax purposes and not as an association taxable as a
                  corporation.

                  (2) The favorable opinion, dated as of the applicable Closing
Time, of counsel for the Underwriters, substantially to the effect specified in
subparagraphs (i) first clause only, (iii) excluding the first clause, (iv), (v)
first clause only, (vii), (xii)(A) and (xiii) of Section 5(b)(1).


                                       -23-
<PAGE>


                  (3) In rendering their opinions required by subsections
(b)(1) and (b)(2) of this Section 5, counsel 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 and statistical
information and data included therein or omitted therefrom, or the Statement
of Eligibility, as to which such counsel need not express any view), at the
time the Registration Statement or any post-effective amendment thereto
(including the filing of ERP'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.

                  In giving their opinions required by this Section 5(b), such
counsel, (A) may rely as to all matters of fact, upon certificates and written
statements of officers and employees of and accountants for ERP and (B) may rely
as to the qualification and good standing of each of ERP or any of its
subsidiaries to do business in any state or jurisdiction, upon certificates of
appropriate government officials or opinions of counsel in such jurisdictions,
which opinions shall be in form and substance satisfactory to counsel for the
Underwriters. 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 financial condition or in the earnings, assets, business affairs or
business prospects of ERP and its subsidiaries considered as a single
enterprise, whether or not arising in the ordinary course of business; and you
shall have received a certificate of the Chief Executive Officer, the President
or the chief financial or chief accounting officer of EQR, as the general
partner of ERP, dated as of such Closing Time, on behalf of 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)
ERP 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


                                       -24-
<PAGE>


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 ERP's independent public accountants, a
letter dated such date, in form and substance satisfactory to you, to the effect
that (i) they are independent accountants with respect to ERP and its
subsidiaries within the meaning of the 1933 Act and the 1933 Act Regulations;
(ii) it is their opinion that the consolidated financial statements and
supporting schedules included or incorporated by reference in the Registration
Statement and the Prospectus and covered by their opinions therein comply in
form in all material respects with the applicable accounting requirements of the
1933 Act and the 1933 Act Regulations; (iii) based upon limited procedures set
forth in detail in such letter, and except as otherwise set forth in such
letter, nothing has come to their attention which causes them to believe that at
a specified date not more than five days prior to the date of the applicable
Terms Agreement, there has been any change in the partners' capital of ERP or in
the consolidated long term debt of ERP or any decrease in the net assets of ERP,
as compared with the amounts shown in the most recent consolidated balance sheet
included or incorporated by reference in the Registration Statement and the
Prospectus or, during the period from the date of the most recent consolidated
statement of operations included or incorporated by reference in the
Registration Statement and the Prospectus to a specified date not more than five
days prior to the date of the applicable Terms Agreement, there were any
decreases, as compared with the corresponding period in the preceding year, in
consolidated revenues, or decrease in net income or net income per weighted
average OP Units outstanding of ERP, except in all instances for changes,
increases or decreases which the Registration Statement and the Prospectus
disclose have occurred or may occur; and (iv) in addition to the audit referred
to in their opinions and the limited procedures referred to in clause (iii)
above, they have carried out certain specified 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 ERP and its
subsidiaries identified in such letter.

                  (e) At the applicable Closing Time, you shall have received
from ERP's independent public accountants a letter dated as of the applicable
Closing Time to the effect that they reaffirm the statements made in the letter
furnished pursuant to subsection (d) of this Section, except that the "specified
date" referred to shall be a date not more than five days prior to the
applicable Closing Time.


                                       -25-
<PAGE>


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

                  (g) 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 ERP 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 ERP'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 ERP's
other securities.

                  (h) If the Underwriters exercise their option provided in a
Terms Agreement as set forth in Section 2(b) hereof to purchase all or any
portion of the Option Securities, the representations and warranties of ERP
contained herein and the statements in any certificates furnished by ERP
hereunder shall be true and correct as of each Date of Delivery, and you shall
have received:

                           (1) A certificate, dated such Date of Delivery,
of the Chief Executive Officer, the President or the chief financial or chief
accounting officer of EQR, as the general partner of ERP, in their capacities as
such, on behalf of 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 counsel for ERP, in
form and substance satisfactory to counsel for the Underwriters, dated such Date
of Delivery, relating to the Option Securities and otherwise substantially to
the same effect as the opinions required of them by Section 5(b)(1) and the
belief required by Section 5(b)(3) hereof.

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


                                       -26-
<PAGE>


                           (4) A letter from ERP's independent public accounts,
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(h)(4) shall be a date not more than five
days prior to such Date of Delivery.

                                    If any condition specified in this Section
shall not have been fulfilled when and as required to be fulfilled, the
applicable Terms Agreement may be terminated by you by notice to ERP at any time
at or prior to the applicable Closing Time, and such termination shall be
without liability of any party to any other party except as provided in Section
4 hereof 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) ERP hereby agrees to indemnify and hold harmless each
Underwriter and each person, if any, who controls any Underwriter within the
meaning of Section 15 of the 1933 Act 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 ERP; and

                           (iii) against any and all expense whatsoever as
                  incurred (including, without limitation, the fees and other
                  charges of counsel


                                       -27-
<PAGE>

                  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 information furnished to ERP by any Underwriter through you expressly
for use in the Registration Statement (or any amendment thereto) and the
Prospectus (or any amendment or supplement thereto).

                  (b) Each Underwriter severally agrees to indemnify and hold
harmless ERP, and each person, if any, who controls ERP within the meaning of
Section 15 of the 1933 Act or Section 20 of the 1934 Act, and any trustee,
director, officer, employee or affiliate thereof, against any and all loss,
liability, claim, damage and expense described in the indemnity contained in
subsection (a) of this Section 6, as incurred; but only with respect to untrue
statements or omissions, or alleged untrue statements or omissions, made in the
Registration Statement (or any amendment thereto) or the Prospectus (or any
amendment or supplement thereto) in reliance upon, and in conformity with,
written information furnished to ERP by any Underwriter through you expressly
for use in the Registration Statement (or any amendment thereto) and the
Prospectus (or any amendment or supplement thereto).

                  (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 ERP. 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


                                    - 28 -
<PAGE>

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.

                  (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 ERP, 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 ERP, 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 ERP, 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


                                    - 29 -
<PAGE>

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 ERP 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 ERP, 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 ERP or by the Underwriters and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission.

                  ERP 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, each officer of ERP who signed the Registration
Statement, and each person, if any, who controls ERP 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.


                                    - 30 -
<PAGE>

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 the
applicable Terms Agreement, or included in certificates of officers of ERP or
EQR 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 ERP, and shall survive delivery of and payment for the
Underwritten Securities until the obligations relating to all Underwritten
Securities have been fully satisfied in accordance with their terms.

                  SECTION 9.  TERMINATION OF TERMS AGREEMENT.

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


                                    - 31 -
<PAGE>

                  (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 ERP pursuant to the applicable Terms Agreement and (y)
the covenant set forth in Section 3(h) hereof, the provisions of Section 4
hereof, the indemnity and contribution agreements set forth in Section 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 right, within 24 hours thereafter, to make arrangements for one
or more of the non-defaulting Underwriters, or any other underwriters, to
purchase all, but not less than all, of the Defaulted Securities in such amounts
as may be agreed upon and upon the terms herein set forth; if, however, you
shall not have completed such arrangements within such 24-hour period, then:

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

                  (b) If the aggregate principal amount of Defaulted Securities
exceeds 10% of the aggregate principal amount of Underwritten Securities to be
purchased pursuant to such Terms Agreement, the applicable Terms Agreement (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 ERP 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 ERP 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.


                                    - 32 -
<PAGE>

                  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 ERP shall be
directed to it at Two North Riverside Plaza, Chicago, Illinois 60606, attention
of Douglas Crocker II.

                  SECTION 12.  PARTIES.

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

                                  *     *    *    *    *


                                    - 33 -
<PAGE>

                                                                       Exhibit A

                        ERP OPERATING LIMITED PARTNERSHIP
                        (an Illinois limited partnership)

                              [Title of Securities]

                             FORM OF TERMS AGREEMENT

                                                   Dated:  __________ ___, 20__

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

Attention:

Ladies and Gentlemen:

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

<TABLE>
<CAPTION>
                                               Principal Amount of
      Underwriter                            Underwritten Securities
      -----------                            -----------------------
<S>                                          <C>
                           Total
                                                   ----------
                                                   $
                                                   ==========
</TABLE>

<PAGE>


                  The Underwritten Securities shall have the following terms:

Title of Securities:
Currency:
Principal amount to be issued:
Current ratings:  Moody's Investors Service, Inc. ________; Standard & Poor's
Corporation __________.
Interest rate or formula:
Interest payments dates:
Stated maturity date:
Redemption or repayment provisions:
Number of Option Securities, if any, that may be purchased by the Underwriters:
Delayed Delivery Contracts:  [authorized][not authorized]
         [Date of Delivery:
         Minimum contract:
         Maximum aggregate principal amount:
         Fee:  ____%]
[Initial public offering price: ____%, plus accrued interest, if any, or
amortized original issue discount, if any, from 20__.] Purchase price: ____%,
plus accrued interest, if any, or amortized original issue discount, if any,
from __________, 20__ (payable in [same] [next] day funds).
Other terms:
Closing date and location:

                  All the provisions contained in the document attached as Annex
A hereto entitled "ERP Operating Limited Partnership--Debt Securities--Standard
Underwriting Provisions" are hereby incorporated by reference in their entirety
herein and shall be deemed to be a part of this Terms Agreements 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.


<PAGE>

                  Please accept this offer no later than ________ o'clock P.M.
(New York City time) on ___________ ___, 20__ by signing a copy of this Terms
Agreement in the space set forth below and returning the signed copy to us.

                                                     Very truly yours

                                                     [NAME OF REPRESENTATIVE]

                                                     By:
                                                        -----------------------
                                                     Acting on behalf of itself
                                                     and the other named
                                                     Underwriters.

Accepted:

ERP OPERATING LIMITED PARTNERSHIP

By:    Equity Residential Properties Trust,
       General Partner

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


<PAGE>


                                                                       Exhibit B

                        ERP OPERATING LIMITED PARTNERSHIP
                        (an Illinois limited partnership)

                              [Title of Securities]

                            DELAYED DELIVERY CONTRACT

                                                      _______________ ___, 20__

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

Attention:

Ladies and Gentlemen:

                  The undersigned hereby agrees to purchase from ERP Operating
Limited Partnership ("ERP"), and ERP agrees to sell to the undersigned on
_______________, 20__ (the "Delivery Date"), ___________________ principal
amount of ERP's [insert title of security] (the "Securities"), offered by ERP's
Prospectus dated ______________, 20__, as supplemented by its Prospectus
Supplement dated ________________, 20__, receipt of which is hereby
acknowledged, at a purchase price [____% of the principal amount thereof, plus
accrued interest from ______________, 20__,] to the Delivery Date, and on the
further terms and conditions set forth in this contract.

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

         The obligation of the undersigned to take delivery of and make payment
for Securities on the Delivery Date shall be subject only to the conditions that
(1) the purchase of Securities to be made by the undersigned shall not on the
Delivery Date be prohibited under the laws of the jurisdiction to which the
undersigned is subject and (2) ERP, on or before __________, 20__, shall have
sold to the Underwriters of the Securities (the "Underwriters") such principal
amount of the Securities as is to

<PAGE>

be sold to them pursuant to the Terms Agreement dated _____________, 20__
between ERP and the Underwriters. The obligation of the undersigned to take
delivery of and make payment for Securities shall not be affected by the
failure of any purchaser to take delivery of and make payments for Securities
pursuant to other contracts similar to this contract. The undersigned
represents and warrants to you that its investment in the Securities is not,
as of the date hereof, prohibited under the laws of any jurisdiction to which
the undersigned is subject and which govern such investment.

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

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

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

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


<PAGE>



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

                                                    Yours very truly,

                                                    ----------------------------
                                                          (Name of Purchaser)

                                                     By:
                                                       -------------------------
                                                                (Title)

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

                                                       -------------------------
                                                               (Address)

Accepted as of the date first above written.

ERP OPERATING LIMITED PARTNERSHIP

By:    Equity Residential Properties Trust,
       General Partner

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

PURCHASER-PLEASE COMPLETE AT TIME OF SIGNING

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

<TABLE>
<CAPTION>
                                                             Telephone No.
                Name                                     (including Area Code)
                ----                                     ---------------------
<S>                                                      <C>



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