GROVE PROPERTY TRUST
DEFM14A, 2000-09-28
REAL ESTATE INVESTMENT TRUSTS
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                            SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Filed by the Registrant [X]
Filed by a Party other than the Registrant [ ]
Check the appropriate box:


     [ ]  Preliminary Proxy Statement
     [ ]  Confidential, for  Use of the  Commission Only (as  permitted  by Rule
          14a-6(e)(2))
     [X]  Definitive Proxy Statement
     [ ]  Definitive Additional Materials
     [ ]  Soliciting Material Pursuant toss.240.14a-11(c) orss.240.14a-12


                              GROVE PROPERTY TRUST

                (Name of Registrant as Specified in its Charter)

--------------------------------------------------------------------------------
     (Name of Person(s) Filing proxy Statement if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[  ]   No fee required.

[  ]   Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11

       1)     Title of each class of securities to which transaction applies:

       2)     Aggregate number of securities to which transaction applies:

       3)     Per unit price or other underlying  value of transaction  computed
              pursuant to Exchange  Act Rule 0-11 (Set forth the amount on which
              the filing fee is calculated and state how it was determined):

       4)     Proposed maximum aggregate value of transaction:

       5)     Total fee paid:

<PAGE>





[X] Fee paid previously with preliminary materials.


[ ] Check box if any  part of the  fee is offset as  provided  by  Exchange  Act
    Rule  0-11(a)(2)  and identify the filing for which the  offsetting  fee was
    paid  previously.  Identify the previous  filing by  registration  statement
    number, or the Form or Schedule and the date of its filing.

       1)      Amount Previously Paid:

               -----------------------------------------------------------
       2)      Form, Schedule or Registration Statement No.:

               -----------------------------------------------------------
       3)      Filing Party:

               -----------------------------------------------------------
       4)      Date Filed:

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
























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<PAGE>



                              Grove Property Trust
                                598 Asylum Avenue
                               Hartford, CT 06105
                             Telephone: 860-246-1126


                               September 28, 2000


Dear Shareholders:


         You are cordially  invited to attend a special  meeting of shareholders
of Grove  Property  Trust  ("Grove") to be held at 9:00 a.m.,  Eastern  time, on
Tuesday,  October 31, 2000 at The Hartford Club, 46 Prospect  Street,  Hartford,
Connecticut.

         At the  special  meeting,  you will be asked to  approve  the merger of
Grove with and into a subsidiary of ERP Operating Limited  Partnership  ("ERP").
If the  proposed  merger  takes  place,  each  outstanding  share of  beneficial
interest,  $0.01 par value per share,  of Grove will be converted into the right
to  receive  cash in the  amount of $17.00  per share  (subject  to a  potential
reduction  in an amount not to exceed  $0.29 per  share),  as  described  in the
attached proxy statement.


         Please review the attached  proxy  statement  carefully.  This document
contains a detailed description of the agreement and plan of merger among Grove,
Grove Operating, L.P. and ERP, and related transactions,  including the transfer
of Grove's  retail  properties to a company  owned by four of Grove's  executive
officers,   including  me,  in  exchange  for  partnership  interests  of  Grove
Operating, L.P.


         Your Board of Trust  Managers  believes that the proposed  merger is in
the best interests of Grove and the  shareholders  of Grove and has approved the
merger by the  unanimous  vote of the trust  managers  present.  The Board  also
recommends  that you vote FOR the  approval  of the merger and the  transactions
contemplated by the merger  agreement.  You should be aware that, in determining
to  sell  Grove,  several  trust  managers  of  Grove  had  certain  potentially
conflicting  interests.  Some of these potentially  conflicting  interests could
have  influenced the Board of Trust Managers'  approval of the merger  agreement
and its  recommendation  that the Grove  shareholders vote to approve the merger
and the  transactions  contemplated by the merger  agreement.  See "Interests of
Certain Persons in the Transactions" in the Proxy Statement.

         In arriving at its decision,  your Board considered a number of factors
including  the opinion of Grove's  financial  advisor,  Houlihan  Lokey Howard &
Zukin Financial  Advisors,  Inc., as to the fairness,  from a financial point of
view, of the consideration to be paid to Grove's shareholders and to the limited
partners of Grove  Operating,  L.P. in connection with the mergers and as to the
fairness,  from a financial point of view, to Grove of the  consideration  to be
received by it in connection with the transfer of the retail properties.

         I  appreciate  the loyalty and  support  our  shareholders  and limited
partners have demonstrated over the years. I hope you will continue this support
by voting FOR the proposed  merger of Grove and the ERP  subsidiary.  With other
members of the Board of Trust  Managers,  I intend to vote FOR the  merger,  and
recommend that all shareholders and limited partners do the same.


         Regardless  of the number of shares you may own, it is  important  that
your shares be represented at the special meeting. Accordingly,  please promptly
mark,  sign,  date and  return  your proxy  card in the  pre-addressed  envelope
whether or not you plan to attend the special meeting. If you attend the special
meeting, you may vote in person whether or not you have previously returned your
proxy.  Under Maryland law, approval of the merger requires the affirmative vote
of two-thirds of the shares  entitled to be voted.  As a result,  the failure to
vote or an abstention is the equivalent of a vote against the merger.


<PAGE>



         On  behalf  of your  Board  of  Trust  Managers,  I thank  you for your
continued  support and again urge you to vote FOR the approval of the merger and
the transactions contemplated by the merger agreement.


                                                 Sincerely,



                                                 Damon D. Navarro
                                                 Chairman, President and Chief
                                                 Executive Officer





















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<PAGE>



                              GROVE PROPERTY TRUST

                    Notice of Special Meeting of Shareholders


                           To Be Held October 31, 2000


Dear Shareholder:


         The Board of Trust  Managers  of Grove  Property  Trust  ("Grove")  has
scheduled a special  meeting of  shareholders  for 9:00 a.m.,  Eastern  time, on
Tuesday,  October 31, 2000 at The Hartford Club, 46 Prospect  Street,  Hartford,
Connecticut.  The sole  purpose of the meeting is for  shareholders  to consider
approval  of the  merger of Grove into a  subsidiary  of ERP  Operating  Limited
Partnership  ("ERP")  pursuant to an  Agreement  and Plan of Merger among Grove,
Grove Operating, L.P. and ERP, along with the other transactions contemplated by
the merger agreement,  including an agreement for the transfer of Grove's retail
properties to a company owned by four of Grove's executive  officers in exchange
for partnership interests of Grove Operating, L.P. If the merger is approved and
becomes effective, shareholders will receive $17.00 cash for each share of Grove
(subject to a potential  reduction  in an amount not to exceed $0.29 per share).
Under Maryland law, the shareholders of Grove will not have  dissenters'  rights
in connection  with the merger of Grove. No other business will be transacted at
the special meeting.

         The Board of Trust Managers has received an opinion from Houlihan Lokey
Howard & Zukin Financial Advisors, Inc., dated July 14, 2000, to the effect that
the  consideration  to be received in the merger by the shareholders of Grove is
fair, from a financial point of view, to them. Houlihan Lokey also opined to the
effect that the  consideration  to be received by Grove in  connection  with the
transfer of the retail  properties is fair,  from a financial  point of view, to
Grove.

         After careful study and evaluation, the Board of Trust Managers has, by
unanimous vote of the Trust Managers present, determined that the merger is fair
and in the best interests of Grove and its  shareholders and recommends that the
shareholders  vote  FOR  approval  of the  merger  and  the  other  transactions
contemplated by the merger  agreement.  You should be aware that, in determining
to  sell  Grove,  several  trust  managers  of  Grove  had  certain  potentially
conflicting  interests.  Some of these potentially  conflicting  interests could
have  influenced the Board of Trust Managers'  approval of the merger  agreement
and its  recommendation  that the Grove  shareholders vote to approve the merger
and the  transactions  contemplated by the merger  agreement.  See "Interests of
Certain Persons in the Transactions" in the Proxy Statement.

         The record date for  shareholders  entitled to notice of and to vote at
the special  meeting has been  established as the close of business on September
22, 2000.



<PAGE>


         Please review the materials  contained in the attached proxy  statement
carefully  and then mark,  sign,  date and  return  your proxy card so that your
shares  may be  represented  at the  meeting.  You may also  attend  and vote in
person.

                                              Sincerely,



                                              Joseph R. LaBrosse

                                              Chief Financial Officer, Secretary
                                              and Treasurer


September 28, 2000


















Shareholders  are urged to mark,  sign,  date and return  promptly  the enclosed
proxy in the accompanying  envelope,  which requires no postage if mailed in the
United  States.  If a  shareholder  receives more than one proxy for any reason,
each  proxy  should  be  completed  and  returned.   Your  cooperation  will  be
appreciated.  Your proxy will be voted with  respect to the  proposal to approve
the  merger  and  the  transactions  contemplated  by the  merger  agreement  in
accordance with any  specifications  on the proxy. A failure to vote,  either by
not returning the enclosed proxy or by checking the "abstain" box thereon,  will
have the same effect as a vote AGAINST approval of the merger.



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<PAGE>




                                TABLE OF CONTENTS


GROVE PROPERTY TRUST...........................................................1
NOTICE OF SPECIAL MEETING OF SHAREHOLDERS......................................1
SUMMARY TERM SHEET.............................................................1
QUESTIONS AND ANSWERS ABOUT THE MERGERS........................................2
WHO CAN HELP ANSWER YOUR QUESTIONS.............................................4
SUMMARY........................................................................5
   Parties to the Mergers......................................................5
   The Transactions............................................................6
   The Retail Agreement........................................................6
   Possible Dividend Reduction.................................................6
   Closing Agreement...........................................................7
   Possible Reduction of Company Merger Consideration..........................7
   The Merger Agreement........................................................7
   Interests of Certain Persons in the Transactions............................7
   Voting Positions Held by Control Persons and Vote Required for
     Approval of the Mergers...................................................8
   Federal or State Regulatory Approvals Needed and Filings Made...............8
   Dissenters' Rights..........................................................8
   Tax Consequences............................................................8
   Conflicts of Interest.......................................................9
   Break-Up Fee................................................................9
THE SPECIAL MEETING...........................................................10
   Proxies and Voting.........................................................10
THE TRANSACTIONS..............................................................10
   Terms of the Transactions..................................................10
BACKGROUND OF THE TRANSACTION.................................................12
   Description of Grove and Grove L.P.'s Business.............................12
   Reasons for the Mergers....................................................13
   Reasons for the Retail Agreement...........................................18
   Recommendation of the Board of Trust Managers..............................19
   Opinion of Financial Advisor-Grove.........................................19
   Summary of Analyses Performed by Houlihan Lokey............................20
   Summary of Appraisals of Retail Properties by Italia & Lemp, Inc...........23
   Effective Time of the Transactions.........................................25
THE MERGER AGREEMENT..........................................................25
   Representation and Warranties..............................................25
   Conditions to the Transactions.............................................26
   Dividends..................................................................27
   Termination Provisions.....................................................27
   Termination Fee and Expenses...............................................28
   No Solicitation of Other Transactions......................................29
   Conduct of Business Pending the Transactions...............................29
   Waiver and Amendment.......................................................31
RETAIL AGREEMENT..............................................................31
   Parties....................................................................31
   Overview...................................................................31
   Redemption Payment.........................................................31
   Expenses of Transfer.......................................................32
   Relationship to Mergers....................................................32
NO APPRAISAL RIGHTS...........................................................32


<PAGE>


CONVERSION OF UNITS/SHARES....................................................32
   Conversion of the Grove Shares.............................................32
   Conversion of the Grove L.P. Units.........................................32
EXPECTED FEDERAL INCOME TAX CONSEQUENCES TO THE HOLDERS OF GROVE
  COMMON SHARES...............................................................33
   Consequences to Grove......................................................33
   Consequences to the Shareholders...........................................33
   Taxation of Non-United States Shareholders.................................33
MATTERS FOLLOWING THE EFFECTIVENESS OF THE MERGERS............................34
   Surrender of and Payment for Shares........................................34
   Certain Effects of the Merger..............................................34
INTERESTS OF CERTAIN PERSONS IN THE TRANSACTIONS..............................35
MARKET PRICE OF AND DIVIDENDS ON GROVE COMMON SHARES..........................36
PRINCIPAL SHAREHOLDERS OF GROVE...............................................36
   Security Ownership of Trust Managers and Executive Officers................36
   Security Ownership of Certain Beneficial Owners............................38
LITIGATION....................................................................40
FORWARD LOOKING STATEMENTS....................................................40
OTHER MATTERS.................................................................41
FUTURE SHAREHOLDER PROPOSALS..................................................41


APPENDIX A:     AGREEMENT AND PLAN OF MERGER
APPENDIX B:     HOULIHAN LOKEY OPINION
APPENDIX C:     REDEMPTION AND DISTRIBUTION AGREEMENT




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<PAGE>



Proxy Statement

                              GROVE PROPERTY TRUST
                                598 Asylum Avenue
                               Hartford, CT 06105

                                 (860) 246-1126

                   Special Meeting of Shareholders to be Held

                               on October 31, 2000

         The  Board of Trust  Managers  of Grove  Property  Trust  ("Grove")  is
furnishing  this proxy  statement  to the  holders of Grove's  common  shares of
beneficial  interest in connection with the solicitation of proxies by the Board
for use at a special  meeting of  shareholders of Grove to be held at 9:00 a.m.,
Eastern  time,  on Tuesday,  October 31, 2000 at The Hartford  Club, 45 Prospect
Street,  Hartford,  Connecticut,  and at any adjournments thereof. The Board has
fixed the  close of  business  on  September  22,  2000 as the  record  date for
determining  shareholders  entitled  to notice of,  and to vote at, the  special
meeting.

         This proxy statement,  the  accompanying  notice of special meeting and
form of proxy  are  first  being  mailed  to  Grove's  shareholders  on or about
September 28, 2000.

         Grove has entered into the  Agreement  and Plan of Merger,  dated as of
July 17,  2000,  among  Grove,  Grove  Operating,  L.P.  ("Grove  L.P.") and ERP
Operating Limited Partnership ("ERP") pursuant to which Grove would merge into a
wholly owned subsidiary of ERP. Immediately prior to this merger and pursuant to
the merger  agreement,  Grove L.P.  would  merge with a different  wholly  owned
subsidiary  of ERP. The terms of the merger  agreement  and the mergers are more
fully described in this proxy statement,  including the attachments  hereto. The
purpose of the special  meeting is to consider and vote on a proposal to approve
the merger of Grove and the transactions contemplated by the merger agreement.

         Upon consummation of the merger of Grove, each Grove common share would
be converted  into the right to receive  $17.00 in cash  (subject to a potential
reduction in an amount not to exceed $0.29 per share).  Upon consummation of the
merger of Grove L.P.,  each Grove L.P. common unit would, at the election of the
holder  thereof,  be converted into the right to receive $17.00 in cash (subject
to a  potential  reduction  in an amount  not to exceed  $0.29 per unit) or into
0.3696 of a common unit of ERP  (subject to a potential  reduction  in an amount
not to exceed 0.0063 per unit received, resulting in a reduced exchange ratio of
not less than 0.3633). Completion of the mergers is subject to satisfaction of a
number of conditions which are outlined in this proxy statement.

         The Board of Trust Managers of Grove  recommends that the  shareholders
of  Grove  and  the  unitholders  of  Grove  L.P.  approve  the  merger  and the
transactions  contemplated by the merger  agreement.  A separate  meeting of the
holders of Grove L.P.'s common units will be held on the same day as the special
meeting of Grove for the purpose of considering and voting on a proposal for the
common  unitholders  to  approve  the  merger  agreement  and  the  transactions
contemplated by the merger agreement.


         Grove's  common  shares are listed  and  traded on the  American  Stock
Exchange  under the symbol "GVE." On July 14, 2000,  the last business day prior
to public  announcement of the execution of the merger  agreement,  the high and
low  sale  prices  of  a  Grove  common  share  were   $16.3125  and   $16.0625,
respectively.


<PAGE>




                               SUMMARY TERM SHEET

         The following are the more important terms of the proposed mergers:

         o  Grove would merge into a subsidiary  of ERP in a merger  transaction
            and the  subsidiary of ERP would be the surviving  entity.  See "The
            Transactions-Terms of the Transactions."

         o  A  subsidiary  of ERP  would  merge  into  Grove  L.P.  in a  merger
            transaction and Grove L.P. would be the surviving  entity.  See "The
            Transactions-Terms of the Transactions."

         o  ERP is an  Illinois  limited  partnership  which  owns and  operates
            apartment  complexes  and had a partners'  capital of  approximately
            $6.1  billion as of June 30,  2000.  ERP is a  subsidiary  of Equity
            Residential  Properties Trust, the largest publicly traded apartment
            company in the United States. See "Summary-Parties to the Mergers."


         o  Holders of Grove  common  shares  would  receive  $17.00 in cash per
            Grove  Common Share  (subject to a potential  reduction in an amount
            not to exceed $0.29 per share). See "The  Transactions-Terms  of the
            Transactions."

         o  The  receipt  of cash in the  merger by Grove  shareholders  will be
            subject to federal and state tax. See "Expected  Federal  Income Tax
            Consequences to the Holders of Grove Common Shares."

         o  The  Board  of Trust  Managers  of Grove  believes  that the  merger
            transactions are fair and in the best interest of Grove,  Grove L.P.
            and their respective  shareholders and unitholders and recommends by
            the unanimous  vote of the trust  managers  present that you approve
            and adopt the merger and the transactions contemplated by the merger
            agreement. See "Background of the Transaction."


         o  Houlihan Lokey Howard & Zukin Financial  Advisors,  Inc. delivered a
            fairness  opinion  to Grove  stating  that the  consideration  to be
            received by the Grove shareholders and the Grove L.P. unitholders in
            the merger  transactions  is fair from a financial point of view and
            that the  consideration to be received by Grove upon the transfer of
            its retail  properties is fair from a financial  point of view.  See
            "Background   of   the    Transaction   -   Opinion   of   Financial
            Advisor-Grove/Grove L.P."


         o  Immediately  prior  to  the  partnership  merger,   Messrs.   Joseph
            LaBrosse,  Brian Navarro,  Damon Navarro and Edmund Navarro,  each a
            Grove executive officer, will acquire Grove's four retail properties
            for  approximately   $21.7  million  (including  the  assumption  of
            mortgage    debt).    See    "The    Transactions-Terms    of    the
            Transactions--Retail Agreement."


         o  The employee trust managers and the executive officers of Grove will
            receive cash payments based upon the termination of their employment
            and the stock  options  they hold.  Non-employee  trust  managers of
            Grove will receive a one-time cash payment in  recognition  of their
            service to Grove.


         o  Grove  shareholders  owning at least  two-thirds of the  outstanding
            Grove  shares must vote to approve  the merger and the  transactions
            contemplated by the merger  agreement.  Certain  executives of Grove
            and Morgan  Stanley  Dean Witter  Investment  Management,  Inc.,  an
            affiliate of the successor to Morgan Stanley Group,  Inc.,  with the
            power to vote an aggregate of




<PAGE>



            31.6% of the  outstanding  Grove common shares,  have agreed to vote
            those Grove common shares to approve the merger and the transactions
            contemplated by the merger agreement.

         o  Grove L.P. unitholders owning at least two-thirds of the outstanding
            Grove L.P.  units must vote to approve the merger  agreement and the
            transactions contemplated by the merger agreement. Grove, as general
            partner  of Grove  L.P.,  has agreed to vote its 68.5%  interest  in
            Grove L.P. and certain executives of Grove have agreed to vote their
            8.6%  limited  partnership  interest  in Grove L.P.  to approve  the
            merger  agreement and the  transactions  contemplated  by the merger
            agreement. See "The Transactions-Terms of the Transactions."


         o  You do not  have  dissenters'  rights  or  rights  of  appraisal  in
            connection with the merger and the transactions  contemplated by the
            merger agreement. See "No Appraisal Rights."

         o  After the partnership merger becomes  effective,  the amount of cash
            consideration  payable to the holders of Grove common shares will be
            deposited  in  trust.   Promptly  after  the  Grove  merger  becomes
            effective,   each  Grove   shareholder  will  receive  a  letter  of
            transmittal  to be completed  and sent to the paying agent  together
            with the certificate(s)  which represented such shareholder's  Grove
            shares.  Promptly after a shareholder  submits a properly  completed
            and  signed   letter  of   transmittal   together   with  the  stock
            certificate(s),  such  shareholder  will  receive the cash that such
            shareholder is entitled to receive.


                     QUESTIONS AND ANSWERS ABOUT THE MERGERS


Q: Why is the meeting being called?

A: The meeting is being called so that the shareholders of Grove can approve the
merger  agreement  among  Grove,   Grove  L.P.  and  ERP  and  the  transactions
contemplated thereby, including the merger of Grove into a subsidiary of ERP.

Q: What will the Grove shareholders receive in the merger?


A: Grove  shareholders  will receive $17.00 per Grove Common Share (subject to a
potential reduction in an amount not to exceed $0.29 per share).

Q: Why is the merger consideration subject to reduction?

A: The  consideration  to be paid in the mergers is subject to  reduction  in an
amount not to exceed $3.5 million in the  aggregate  (a maximum  amount of $0.29
per Grove  common  share),  which  amount may be  expended  to  resolve  certain
existing  potential  liabilities.  If Grove's  potential  liabilities  cannot be
resolved  for less than $3.5  million,  EQR has the  option of not  closing  the
merger transactions.


Q: What is the difference between the company merger and the partnership merger?


A: There are two different  mergers  taking place in this  transaction:  (1) the
company  merger  between a subsidiary  of ERP and Grove and (2) the  partnership
merger between a subsidiary of ERP and Grove L.P.


Q: Which merger am I voting to approve?


A: Because you are a holder of Grove common shares, you will vote to approve the
company merger and the transactions contemplated by the merger agreement.


Q: Why are the companies proposing to merge? How will I benefit?


A:  After  careful  study  and  evaluation,  Grove's  Board  of  Trust  Managers
determined,  by unanimous vote of the trust managers  present,  that the company
merger and the  partnership  merger are fair and in the best  interests of Grove
and its shareholders and of Grove L.P. and its unitholders. Each holder of Grove
common shares will receive $17.00 per share (subject to a potential reduction in
an amount not to exceed



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<PAGE>



$0.29  per  share).  On  July  14,  2000,  the  last  business  day  before  the
announcement  that the merger agreement had been entered into, the closing price
reported on the American Stock Exchange per Grove common share was $16.3125.


Q: When will I receive my cash?

A: If the merger transactions are approved,  you will receive your cash promptly
after the company  merger  becomes  effective and you have  submitted a properly
completed and executed  letter of  transmittal to the paying agent together with
the certificate(s)  which represented your Grove common shares. The paying agent
will send you the form of letter of transmittal after the company merger becomes
effective.

Q: Do I have dissenters' rights?


A: No. Grove  shareholders do not have dissenters' rights or rights of appraisal
in connection with the merger transactions.


Q:  What  are  the  federal  tax  consequences  of  the  company  merger  to the
shareholders?


A: The receipt of cash in the company merger will be a taxable  transaction  for
federal and most state income tax purposes. Please be aware that tax matters are
very  complicated  and the tax  consequences  of the company  merger to you will
depend on the particular facts of your own situation.


Q: When do you expect the mergers to be completed?


A:  We hope  to  complete  the  mergers  on  October  31,  2000,  the day of the
shareholder and partnership  meetings,  assuming the Grove  shareholders and the
Grove L.P. unitholders approve the mergers and the transactions  contemplated by
the merger agreement. However, there are also other conditions to completing the
mergers that must also be satisfied,  including  specifically  the resolution of
certain potential Grove liabilities.


Q: What vote is required to approve the mergers?


A:  The  company  merger  must be  approved  by the  affirmative  votes of Grove
shareholders  owning  at least  two-thirds  of the  outstanding  shares of Grove
common stock. Certain executives of Grove and Morgan Stanley have agreed to vote
31.6% of the  outstanding  Grove  common  shares to  approve  the merger and the
transactions  contemplated by the merger agreement.  The partnership merger must
be approved by the affirmative votes of Grove L.P.  unitholders  owning at least
two-thirds of the  outstanding  Grove L.P.  units.  Grove, as general partner of
Grove L.P.,  has agreed to vote its 68.5%  interest  in Grove L.P.,  and certain
executives of Grove have agreed to vote their 8.6% limited partnership  interest
in Grove L.P. to approve the merger agreement and the transactions  contemplated
by the merger agreement.


Q: How do I vote?


A: Your vote is  important.  If you are a  registered  holder (that is, you hold
your shares in your own name and not through a broker or other nominee), you can
vote in person at the  meeting  or by proxy.  You can vote by proxy by  marking,
signing,  dating and mailing the enclosed  proxy card in the envelope  provided.
You may also attend the meeting and vote your Grove common shares in person.  If
you hold your shares in "street name" with a broker,  your broker will vote your
shares only if you provide  your broker with  instructions  on how to vote.  You
should follow the directions  provided by your broker  regarding how to instruct
your broker to vote your shares.  Without instructions,  your shares will not be
voted,  which  will have the same  effect as voting  against  the merger and the
transactions contemplated by the merger agreement.


Q: Can I revoke or change my proxy?

A: Yes,  you can change or revoke  your proxy at any time before the vote at the
meeting. To do so, you must:

o  advise the Secretary of Grove in writing  before your common shares are voted
   by the proxy holders at the meeting;

o  deliver later-dated proxy instructions; or

o  vote in person.

Q: Should I send in my stock certificate now?

A: No. After the mergers are  completed,  we will send you written  instructions
regarding the surrender of your certificates in exchange for cash.


                                       3
<PAGE>



                       WHO CAN HELP ANSWER YOUR QUESTIONS

If you have any additional questions about the merger  transactions,  you should
contact:

                              Grove Property Trust
                              Grove Operating, L.P.
                                598 Asylum Avenue
                           Hartford, Connecticut 06105
                                  Sheila Daley
                                       or
                                  Michele Hull
                            Telephone: (877) 547-1118
                                   (Toll Free)


















                                       4
<PAGE>



                                     SUMMARY

         The  following  summary  highlights  selected   information   contained
elsewhere in this proxy statement and does not contain all the information  that
is important to you. To  understand  the mergers  fully and for a more  complete
description  of the legal  terms of the  mergers,  please see the more  detailed
information contained in this proxy statement,  the Appendices and the documents
to which we refer you.

PARTIES TO THE MERGERS

Equity Residential Properties Trust (EQR)
Two North Riverside Plaza
Chicago, Illinois 60606
(312) 474-1300

         EQR is a real estate  investment  trust and one of the largest publicly
traded real estate  companies in the United  States.  EQR was organized in March
1993 and commenced  operations as a publicly  traded company on August 15, 1993,
upon the completion of its initial public  offering.  EQR was formed to continue
the  multifamily  property  business  objectives and  acquisition  strategies of
affiliated  entities  controlled  by Mr.  Samuel Zell,  Chairman of the Board of
Trustees of EQR. These entities had been engaged in the  acquisition,  ownership
and operation of  multifamily  properties  since 1969.  EQR's senior  executives
average over 25 years of experience in the multifamily property business. EQR is
the largest publicly traded owner of multifamily properties, based on the number
of apartment units  wholly-owned and total revenues earned. As of June 30, 2000,
EQR  owned or had  interests  in a  portfolio  of 1,053  multifamily  properties
containing  224,383  apartment units and managed 4,835 additional units owned by
affiliated and non-affiliated  entities. As of June 30, 2000, the properties EQR
owned or had interests in had an average  occupancy rate of  approximately  95%.
These properties are located in 35 states.

ERP Operating Limited Partnership (ERP)
Two North Riverside Plaza
Chicago, Illinois 60606
(312) 474-1300

         ERP is a  subsidiary  of EQR.  EQR  controls  ERP as its  sole  general
partner and as of June 30, 2000,  owned  approximately  91% of  outstanding  ERP
units,  excluding ERP preferred units of limited  partnership.  ERP units may be
exchanged  for  either  EQR common  shares on a  one-for-one  basis or, at EQR's
option,  the cash equivalent of the applicable number of EQR common shares.  All
of EQR's  interests in its  properties  are held directly or indirectly  by, and
substantially  all of its  operations are conducted  through,  ERP. ERP owns and
operates apartment complexes  throughout the United States. At June 30, 2000, it
had total  assets of  approximately  $11.7  billion  and  partners'  capital  of
approximately $6.1 billion.

Grove Property Trust (Grove)
598 Asylum Avenue
Hartford, Connecticut 06105
(860) 246-1126


         Grove owns and manages apartment complexes in New England and it or its
predecessors  have been  purchasing  and managing real estate in that area since
1980.  As of June 30, 2000,  Grove's  portfolio of 58  apartment  communities  ,
consisting  of 7,075  apartment  units,  is focused  primarily in the suburbs of
Boston,  Massachusetts,  Hartford,  Connecticut and Providence, Rhode Island. At
June 30, 2000, Grove had total assets of $361.5 million.



                                       5
<PAGE>


Grove Operating, L.P. (Grove L.P.)
598 Asylum Avenue
Hartford, Connecticut 06191
(860) 246-1126


         Grove L.P. was formed by Grove to act as a vehicle for the  acquisition
of its properties.  Grove controls Grove L.P. as its sole general  partner.  The
Grove L.P.  units are  redeemable one year after issuance for cash (based on the
fair market value of an equivalent  number of Grove common shares at the time of
such redemption) or, at Grove's option, for Grove common shares on a one-for-one
basis, subject to specific anti-dilution adjustments and exceptions.  Grove L.P.
owns and operates  Grove's  property  portfolio.  At June 30, 2000,  Grove owned
approximately 68.5% of the total partnership  interests in Grove L.P., including
the sole general partner interest. At June 30, 2000, Grove L.P. had total assets
of approximately  $361.5 million and partners'  capital of approximately  $101.9
million.


THE TRANSACTIONS

         THE COMPANY MERGER


         Grove will be merged into a subsidiary of ERP. The subsidiary of ERP, a
single member limited  liability  company,  will be the surviving  entity.  As a
result of the merger,  the  shareholders  of Grove will receive $17.00 per Grove
common share owned (subject to a potential  reduction in an amount not to exceed
$0.29 per share).  Grove's  general  partnership  interest in Grove L.P. will be
transferred  pursuant to the company merger to the surviving  limited  liability
company,  making the limited liability company the sole general partner of Grove
L.P.


         THE PARTNERSHIP MERGER


         A subsidiary  of ERP will be merged into Grove L.P. and Grove L.P. will
be the surviving entity. As a result of the partnership  merger, the unitholders
of Grove L.P. may elect to receive  either (i) $17.00 per Grove L.P.  unit owned
(subject to a potential reduction in an amount not to exceed $0.29 per unit), or
(ii)  0.3696 of an ERP unit per Grove L.P.  unit owned  (subject  to a potential
reduction in an amount not to exceed  0.0063 per unit  received,  resulting in a
reduced exchange ratio of not less than 0.3633).  This conversion ratio is based
upon the equivalent of $17.00 per Grove L.P. unit divided by an assumed value of
$46.00 per ERP unit. This conversion ratio is fixed (subject to the reduction of
up to 0.0063 per unit),  and the value of an ERP unit  received  can increase or
decrease based upon the then value of an ERP unit.


THE RETAIL AGREEMENT


         Grove currently owns and operates four retail  properties.  Immediately
prior to the  partnership  merger,  an entity  owned by Joseph  LaBrosse,  Brian
Navarro,  Damon Navarro and Edward  Navarro,  executives of Grove,  will acquire
these  properties  from Grove for  approximately  $21.7 million  (including  the
assumption of mortgage debt and the surrender of Grove L.P. units).


POSSIBLE DIVIDEND REDUCTION


         Grove will continue to pay dividends to its shareholders and Grove L.P.
will continue to pay partnership  distributions to its unitholders,  declared up
to the time  the  mergers  become  effective.  However,  the  transaction  costs
incurred by Grove and Grove L.P. in connection with the merger  transactions are
not to exceed a set amount.  If the sum of certain Grove and Grove L.P. costs in
the transaction  exceed a set amount,  dividends and  partnership  distributions
that would have been paid to the Grove  shareholders and Grove L.P.  unitholders
respectively will be reduced by the aggregate amount of this excess.



                                       6
<PAGE>



CLOSING AGREEMENT

         In  connection  with its due  diligence  with  respect  to  Grove,  EQR
determined that Grove may have certain potential  tax-related  liabilities which
EQR was not willing to assume  pursuant to the mergers.  EQR indicated  that the
price it would be  willing  to pay for Grove  would  need to be  reduced  by the
amount,  if any, paid and costs  incurred by Grove in connection  with resolving
such potential  liabilities  by obtaining a closing  agreement from the IRS. The
receipt of the closing  agreement and the absence of any associated  liabilities
and costs in excess of $3.5  million is a  condition  to both  Grove's and ERP's
obligation  to complete  the  mergers.  Any amounts paid by Grove to settle such
potential  liabilities and the costs of obtaining the settlement  would be borne
by the  holders  of  Grove's  common  shares and Grove  L.P.'s  units  through a
reduction in the purchase price,  not to exceed $0.29 per Grove common share and
Grove L.P. unit  (equivalent to a reduction of the unit  consideration by 0.0063
ERP unit received).

POSSIBLE REDUCTION OF COMPANY MERGER CONSIDERATION

         The Grove shareholders and the Grove L.P.  unitholders will receive the
merger  consideration,  less an amount  that may be expended by Grove to resolve
certain existing  potential  liabilities.  The maximum amount the purchase price
may be  reduced is $3.5  million.  If Grove's  potential  liabilities  cannot be
resolved for less than $3.5 million,  ERP has the option of not proceeding  with
the merger transactions. This potential reduction would reduce the cash received
by Grove shareholders by a maximum of $0.29 per Grove share.

         The meeting of Grove  shareholders  will be held on October  31,  2000,
irrespective of whether Grove has resolved certain potential liabilities through
Grove's receipt of a closing  agreement from the Internal  Revenue  Service,  as
described  herein.  Thus, at the meeting of shareholders,  Grove's  shareholders
will be asked to approve  the merger and the  transactions  contemplated  by the
merger  agreement  whether or not Grove has resolved certain  liabilities  which
could reduce the company merger consideration, as described herein. In addition,
neither  ERP nor Grove and Grove L.P.  are  obligated  to  complete  the mergers
unless such liabilities are resolved for less than $3.5 million.  Therefore, the
Grove  shareholders  may be asked to approve the company merger without  knowing
the actual cash consideration or whether the mergers will actually be completed.


THE MERGER AGREEMENT

         The merger  agreement is the legal  document which governs the mergers.
The merger agreement is attached hereto as Appendix A.

INTERESTS OF CERTAIN PERSONS IN THE TRANSACTIONS


         Upon consummation of the Grove merger,  the executive officers of Grove
will receive cash payments based upon the  termination  of their  employment and
the number of stock  options  which they hold at that time.  Non-employee  trust
managers of Grove will receive a one-time cash payment in  recognition  of their
substantial contributions to Grove and for their service on the Merger Oversight
Committee,  as well as cash  payments  based on the number of stock options they
hold  (except  for  grants  made  in  2000,  which  will  be  cancelled  for  no
consideration).  Moreover, ERP will indemnify the officers and trust managers of
Grove or any Grove  subsidiary  for  their  actions  on or prior to the  merger,
including all transactions arising from the merger agreement.



                                       7
<PAGE>



VOTING  POSITIONS HELD BY CONTROL  PERSONS AND VOTE REQUIRED FOR APPROVAL OF THE
MERGERS


         VOTING POSITIONS HELD BY CONTROL PERSONS


         THE PARTNERSHIP AND COMPANY MERGERS: Messrs. Cheema, Garrahy, LaBrosse,
McNamara,  Munsell, B. Navarro, D. Navarro, E. Navarro and Twaddell,  and Morgan
Stanley  have signed  shareholder/partner  voting  agreements  whereby they have
agreed to vote the shares or units they hold  affirmatively  for the  respective
mergers.  Together, they hold 31.6 % of the outstanding shares of Grove and 8.6%
of the outstanding limited  partnership units of Grove L.P. In addition,  Grove,
as general partner of Grove L.P., has agreed to vote its 68.5% interest in Grove
L.P. to approve the partnership merger.


         VOTE REQUIRED FOR APPROVAL OF THE MERGERS

         The Company Merger:
         ------------------

         In order for the company merger to be approved,  at least two-thirds of
outstanding  common  shares  of  Grove  that  are  entitled  to vote  must  vote
affirmatively for the company merger.

         The Partnership Merger:
         ----------------------


         In order for the partnership merger to be approved,  unitholders owning
at least  two-thirds  of the Grove L.P.  units must vote  affirmatively  for the
partnership merger.


FEDERAL OR STATE REGULATORY APPROVALS NEEDED AND FILINGS MADE

         ERP was required to file a  registration  statement  and other  related
documents with the SEC in connection  with the  partnership  merger.  The merger
transactions do not require a filing under the  Hart-Scott-Rodino  Act. Prior to
the partnership  merger, ERP will have received all state security or "blue sky"
permits and other  authorizations  necessary to issue the ERP units to the Grove
L.P.  limited  partners  that elect to receive  ERP units.  Grove has filed this
proxy statement with the SEC.

DISSENTERS' RIGHTS


         Grove  shareholders  are not  entitled to  dissenters'  rights or other
rights of appraisal in connection  with the company  merger under  Maryland law.
Grove L.P. unitholders are not entitled to dissenters' rights or other rights of
appraisal in connection  with the  partnership  merger under Delaware law or the
agreement of limited partnership of Grove L.P.


TAX CONSEQUENCES


         Based  on the  current  provisions  of the  Internal  Revenue  Code and
applicable  Treasury  Regulations,  the  receipt  of  cash  by  the  Grove  L.P.
unitholders in the partnership  merger and by Grove  shareholders in the company
merger will be a taxable  transaction  for federal  income tax  purposes  and is
likely to be a taxable  transaction  under  state,  local or foreign  income tax
laws. Subject to specific  exceptions,  the receipt of ERP units in exchange for
Grove L.P.  units is treated as a  contribution  and such limited  partners will
generally  not  have to pay any  state  or  federal  income  taxes.  The  merger
transactions are not expected to have any tax consequences to Grove,  Grove L.P.
or ERP.



                                       8
<PAGE>


CONFLICTS OF INTEREST

         Possible  conflicts  of  interest  exist due to the fact  that  certain
members of management of Grove,  pursuant to existing  agreements and the retail
agreement,  have  certain  interests  that are in addition to the  interests  of
shareholders of Grove generally. Such interests include severance and transition
payments,  acceleration of vesting of restricted  Grove shares,  acceleration of
vesting of stock options and tax recognition  payments and the retail agreement.
Therefore,  a  conflict  between  the  interests  of these  individuals  and the
interests of the Grove  shareholders  and limited  partners  could exist.  These
interests are described in the section entitled "Interests of Certain Persons in
the Transactions."

BREAK-UP FEE


         The merger agreement provides for a "break-up fee" of $8.5 million plus
break-up  expenses  of up to $2  million  payable  by Grove to ERP if the merger
agreement is  terminated  by either ERP or Grove under  specified  circumstances
and, if, within one year thereafter, Grove enters into an agreement regarding an
acquisition proposal which is consummated. If the merger agreement is terminated
by either ERP or Grove  under  other  circumstances,  either ERP or Grove may be
required to pay the other  party's  break-up  expenses of up to $2 million.  See
"The  Merger  Agreement-Termination  Provisions."  The  obligation  to  pay  the
break-up  fee or the  expense  fee or both may  adversely  affect the ability of
Grove to engage in another  transaction  in the event the company  merger is not
consummated.


















                                       9
<PAGE>


                               THE SPECIAL MEETING

PROXIES AND VOTING.

         It is important  that all  shareholders'  votes be  represented  at the
special  meeting  either  in person or by  proxy.  Each  proxy  will be voted as
directed by the shareholder. Signed proxies that are returned and do not contain
contrary  instructions  will be voted in favor of the approval of the merger and
the  transactions  contemplated  by the merger  agreement.  Pursuant  to Grove's
by-laws, no other business is permitted to be transacted at the special meeting.

         A proxy may be revoked by delivering a written  notice of revocation to
the Secretary of Grove,  by delivering an executed proxy bearing a later date to
the  Secretary  of Grove or by  appearing  at the special  meeting and voting in
person.


         Each Grove common share  entitles the holder thereof to one vote on the
proposal to approve the merger and the  transactions  contemplated by the merger
agreement.  At the close of business on the record  date,  there were  8,364,947
common  shares of Grove issued and  outstanding.  Approval of the merger and the
transactions  contemplated by the merger agreement requires the affirmative vote
of  two-thirds  of the  Grove  common  shares  entitled  to vote at the  special
meeting.


         The vote  required to approve  the merger is based on the total  voting
power entitled to be cast on the proposal.  Broker  nonvotes occur when a broker
nominee  does not vote on a matter  at a  meeting  because  it has not  received
instructions  from the beneficial owner to vote and does not have  discretionary
authority  to vote on such  matter.  Failures  to vote,  abstentions  and broker
nonvotes with respect to the proposal to approve the merger and the transactions
contemplated by the merger agreement will have the same effect as a vote AGAINST
the  proposal.  Returned  proxies  will be  processed  and  tabulated  under the
supervision of independent inspectors of election.

         In addition to  solicitation  by mail,  trust  managers,  officers  and
certain   management   employees  of  Grove  may  solicit   proxies  from  Grove
shareholders,  either  personally  or by  telephone,  telegraph or other form of
communication.  Such persons will receive no  additional  compensation  for such
services. Grove has retained Corporate Investor  Communications,  Inc. to assist
in  soliciting  proxies at an  estimated  cost of  $10,000,  plus  out-of-pocket
expenses.  All expenses  associated with the solicitation of proxies in the form
enclosed will be borne by Grove.


         The Board of Trust Managers of Grove has approved the merger agreement,
believes that the merger is in the best interests of Grove and its  shareholders
and recommends approval by Grove shareholders of the merger and the transactions
contemplated by the merger agreement.  Grove shareholders  should be aware that,
in  determining  to sell  Grove,  several  trust  managers  of Grove had certain
potentially  conflicting  interests.   Some  of  these  potentially  conflicting
interests  could have  influenced the Board of Trust  Managers'  approval of the
merger  agreement and its  recommendation  that the Grove  shareholders  vote to
approve the merger and the  transactions  contemplated by the merger  agreement.
See "Interests of Certain Persons in the Transactions" in this proxy statement.


                                THE TRANSACTIONS

TERMS OF THE TRANSACTIONS

         OVERVIEW


         The  following is a brief  summary of the material  terms of the of the
merger agreement and the transactions  contemplated  thereby.  To understand the
merger transactions fully, and for a complete  description of the legal terms of
the mergers,  you should  carefully  read this entire  document,  including  the
merger  agreement,  which is  attached as  Appendix  A, and is  incorporated  by
reference.  This  summary is  qualified in its entirety by reference to the full
text of the merger agreement and the retail agreement.



                                       10
<PAGE>



         The merger  transactions  consist of two separate mergers:  the company
merger and the partnership merger. The merger transactions are designed to allow
ERP to acquire the 58 apartment  communities Grove and Grove L.P.  currently own
and manage in the Boston, Massachusetts,  Hartford,  Connecticut and Providence,
Rhode Island areas.  The acquisition of the Grove properties will increase ERP's
presence in the New England states.

         Through a series of steps and as a result of the  merger  transactions,
ERP or an entity wholly owned by ERP will be the single member of a newly formed
Delaware  limited  liability  company ("New  LLC1"),  which will become the sole
limited partner of Grove L.P. by forming another single member Delaware  limited
liability  company ("New LLC2") which will merge with and into Grove L.P. ERP or
an entity  wholly  owned by ERP will also be the sole  member of a  newly-formed
Maryland  limited  liability  company ("New  LLC3"),  which will become the sole
general partner of Grove L.P. by merging with Grove.


         THE COMPANY MERGER


         Following approval of the company merger by the Grove shareholders, the
satisfaction  or  waiver  of  other  conditions  and  the  consummation  of  the
partnership  merger,  Grove and New LLC3 will file  articles  of merger with the
State  Department  of  Assessments  and Taxation in Maryland to  effectuate  the
company merger. The company merger will be comprised of the following steps:


         o  ERP will form New LLC3.

         o  New LLC3 and Grove will merge.

         o  New LLC3 will be the surviving entity of the company merger.


         o  Grove  shareholders will receive $17.00 per Grove common share owned
            (subject to a potential  reduction  in an amount not to exceed $0.29
            per share).


         o  Grove's  general   partnership   interest  in  Grove  L.P.  will  be
            transferred pursuant to the company merger to New LLC3, and New LLC3
            will become the sole general partner of Grove L.P.


         o  ERP or an entity wholly owned by ERP will be: (i) the sole member of
            New LLC1,  which will be the sole limited partner of Grove L.P., and
            (ii) the sole  member of New LLC3,  which  will be the sole  general
            partner of Grove L.P.


         THE PARTNERSHIP MERGER


         Following approval of the partnership merger by the Grove L.P. partners
and the satisfaction or waiver of other conditions, Grove L.P. and New LLC2 will
file a  certificate  of  merger  with the  Secretary  of State  of  Delaware  to
effectuate the partnership  merger.  The partnership merger will be comprised of
the following steps:


         o  ERP will form New LLC1, which will in turn form New LLC2.

         o  New LLC2 will merge with Grove L.P. and Grove L.P.  will survive the
            partnership merger. New LLC1 will become the sole limited partner of
            Grove L.P. and Grove will continue to be the sole general partner of
            Grove L.P.


         o  The limited  partners of Grove L.P. may elect to receive  either (i)
            $17.00 (subject to a potential  reduction in an amount not to exceed
            $0.29 per share) or (ii)  0.3696 ERP units  (subject  to a potential
            reduction in an amount not to exceed 0.0063 per unit received,



                                       11
<PAGE>



            resulting in a reduced  exchange  ratio of not less than 0.3633) per
            Grove L.P. unit owned immediately prior to the partnership merger.


         Upon the effectiveness of the partnership merger,  Grove L.P.'s limited
partners  will no longer hold any interest in Grove L.P. The Grove L.P.  limited
partners who elect to receive ERP units will become limited partners of ERP.

         RETAIL AGREEMENT


         Grove currently owns and operates four retail  properties.  Immediately
prior to the merger  transactions,  an entity owned by Messrs.  J. LaBrosse,  B.
Navarro,  D. Navarro and E.  Navarro,  executives  of Grove,  will acquire these
properties  from  Grove  for  approximately  $21.7  million  consisting  of  the
redemption by Grove L.P. of 998,227 units  currently  owned by these  executives
valued at $17.00 per unit (subject to a potential  reduction not to exceed $0.29
per unit) and the assumption of approximately $7.5 million of debt by the entity
owned by the  executives.  Any excess value in the transfer  will be tendered in
cash to the entity acquiring the retail properties. The executives will bear all
costs of this transaction.


                          BACKGROUND OF THE TRANSACTION

DESCRIPTION OF GROVE AND GROVE L.P.'S BUSINESS

         GROVE

         Grove, a Maryland real estate  investment  trust, is a self-managed and
self-administered   real  estate   investment  trust  that  is  engaged  in  the
acquisition,   repositioning,   management   and  operation  of  mid-priced  and
subsidized   multifamily  and  specialty  retail   properties   located  in  the
Northeastern  part  of the  United  States.  Grove  has  in-house  expertise  in
acquisition,  repositioning  and  renovation,  marketing,  leasing and  property
management.

         Grove  owns  interests  in  and  operates   apartment   communities  in
Connecticut, Massachusetts and Rhode Island and four specialty retail properties
in  Massachusetts  and Maine.  The  apartment  communities  are  mid-prized  and
subsidized  apartment  properties  consisting  primarily of two and  three-story
buildings in landscaped  settings.  The apartment  communities  are well located
within their markets and appeal to middle income and moderate  income  residents
who are  generally  "renters  by  necessity"  with the  exception  of the Boston
suburbs where residents are renters by choice in many instances.

         Grove's  predecessors  started  operations in 1980, and Grove completed
its first  public  offering  in 1994  with the  acquisition  of three  apartment
properties.  In 1996,  management  began to  undertake  a  number  of  strategic
initiatives  intended  to  maximize  shareholder  value.  In March  1997,  Grove
completed  the  following:  (i) the  creation  of an umbrella  partnership  REIT
structure by forming Grove L.P. to facilitate  acquisition  transactions  and to
provide  potential  sellers with a mechanism to defer their tax liability;  (ii)
the acquisition  through Grove L.P. of 20 properties owned by Grove  affiliates;
(iii) the acquisition of the property  management assets and related liabilities
of Grove  Property  Services  Limited  Partnership,  the entity that managed the
Grove  properties and the 20 properties  owned by Grove  affiliates;  (iv) a $30
million  private  placement of equity  securities;  and (v) the closing of a $25
million credit facility and a $15 million term loan facility.

         In November 1997,  Grove completed a public offering  pursuant to which
it sold 4.5  million  shares  and sold  additional  shares  directly  to certain
investors.  During 1998,  Grove  purchased  3,605  apartment  units and a 23,325
square foot retail property for a total cost of approximately  $171 million with
cash, debt and the issuance of operating units. During 1999 and 2000, Grove sold
four apartment communities  containing 313 apartment units for $12.8 million. In
2000, Grove acquired three apartment communities containing 912 apartment units.

         Grove  operates in three  industry  segments:  residential,  subsidized
residential and retail.



                                       12
<PAGE>



         GROVE L.P.

         Grove  L.P.  was  formed  by  Grove  to  act  as the  vehicle  for  the
acquisition of properties.  Grove is the sole general  partner of Grove L.P. and
thereby controls it. Grove uses Grove L.P. to acquire properties in exchange for
common units,  which represent limited  partnership  interests in Grove L.P. The
recipients of units are restricted  from  transferring  the units for a one-year
period from the acquisition  date. The units are redeemable  after such time for
cash or for Grove common  shares,  at Grove's  option,  on a one-for-one  basis,
subject to certain anti-dilution adjustments and exceptions.  During 1998, Grove
L.P.  issued  approximately   391,000  common  units  in  conjunction  with  the
acquisition of 20 properties with approximately 2,200 apartments.

REASONS FOR THE MERGERS

         Over the recent several years,  Grove has had substantial growth in its
assets through a variety of acquisitions as well as in its revenues,  net income
and  funds  from  operations.   During  this  period,  Grove  has  also  enjoyed
above-average total shareholder returns,  compared to other REITs, based both on
the price of the Grove common shares (and,  indirectly,  the value of the common
units of Grove L.P.) and on the  dividends and  distributions  paid by Grove and
Grove L.P.

         Grove was approached periodically by representatives of other entities,
including EQR,  expressing  varying degrees of interest in acquiring Grove. None
of these approaches led to further  developments until an inquiry Grove received
from EQR in the Fall of 1999.  At that time, a senior  officer of EQR  contacted
the Chief Executive Officer of Grove to request a meeting. An initial meeting of
such  officers  occurred  in the  Fall  of  1999  at  which  time a  preliminary
indication of EQR's valuation of Grove was suggested.  The representative of EQR
also indicated that EQR had informally  contacted  certain of the  institutional
shareholders of Grove to determine  their  long-term  interests in Grove and its
securities.

         Although no further  contact  between  Grove and EQR took place  during
1999,  Grove's  management began to evaluate what would be in the best interests
of the Grove  shareholders and the Grove L.P.  unitholders.  That evaluation led
the Grove  management to the conclusion  that some type of acquisition  proposal
for Grove  might be made on either a  friendly  or a hostile  basis.  Because of
these developments,  Grove determined that the interests of its shareholders and
the Grove L.P.  unitholders  would be better served if Grove exercised a greater
degree of control over some process that might occur.


         In the first  quarter of 2000,  EQR  expressed  continuing  interest in
pursuing an acquisition transaction with Grove. EQR expressed a preference for a
cash  payment for Grove's  common  shares and a fixed  conversion  ratio for the
exchange of Grove L.P. common units for ERP units. In early March, Grove and EQR
entered  into a  confidentiality  agreement  pursuant to which  Grove  agreed to
provide  certain  confidential  information to EQR and EQR agreed to retain such
information  in confidence  and to use it only to evaluate the  desirability  of
pursuing  a  transaction   with  Grove.   Grove   thereafter   provided  certain
confidential information to EQR.


         After  entering  into the  confidentiality  agreement  with EQR,  Grove
contacted two of the other parties who had, over time,  expressed some degree of
interest in exploring a possible  transaction with Grove. The discussions led to
the execution of  confidentiality  agreements  with the other parties with terms
substantially  identical to the terms of the  confidentiality  agreement between
Grove and EQR.  Information  comparable to that  provided to EQR was  thereafter
provided to one of those parties and some confidential  information was provided
to the other.

         Beginning  in  approximately  mid-May,  2000,  Grove  had a  series  of
discussions with its counsel and other advisors concerning the substantive terms
of any  transaction  which might be presented to the Board of Trust  Managers of
Grove and the appropriate  process to follow in its continuing  discussions with
EQR and the other two parties.  Grove's management recognized that the structure
of any  transaction  might have  different  tax  consequences  to the holders of
Grove's  common shares than to the holders of Grove L.P.'s  common units.  Grove
believed that a  transaction  which was tax-free  would likely be  substantially
more



                                       13
<PAGE>



important  to the holders of Grove  L.P.'s  common units than it would be to the
holders of Grove's common shares.

         EQR  proposed  that it and Grove  enter into an  agreement  pursuant to
which  Grove  would  agree that it would  negotiate  exclusively  with EQR for a
30-day  period and which  would also  outline  the terms on which a  transaction
between Grove and EQR might be concluded. During that period, representatives of
EQR would be permitted to perform additional due diligence  concerning Grove and
its properties.  Grove's  management,  its counsel and other advisors  discussed
with EQR the terms of such an  exclusivity  agreement  which Grove's  management
believed  might be  acceptable  to the Board of Trust  Managers  of  Grove.  The
proposed  terms of such an  agreement  were the subject of  extended  discussion
among  Grove and its  advisors  and EQR.  Terms which were  discussed  included,
without limitation, the period of any exclusivity,  the general structure of any
potential transaction,  the obligations of each to pay certain fees and expenses
in  the  event  that  a  definitive   agreement  was  not  entered   into,   the
appropriateness  of the assumptions EQR used to make its preliminary  evaluation
of Grove and the price it might be willing to pay in any transaction with Grove.
During this time,  the management of Grove also kept the Trust Managers of Grove
advised of the progress of the discussions.

         A special  meeting of the Board of Trust  Managers of Grove was held on
May 25, 2000 for the purpose of reviewing the general  proposals  which had been
presented  to Grove  by EQR and  each of the  other  interested  parties  and to
determine  what course Grove should follow in the best  interests of the holders
of Grove's common shares and Grove L.P.'s common units.

         At this meeting,  counsel for Grove reviewed the duties of the Board in
considering  opportunities  for the  sale of the  company.  Management  reviewed
Grove's recent  operating  history and the impact on Grove and its operations of
external  conditions,  including  that  the  capital  markets  for  real  estate
investment  trusts had been  relatively  positive in 1997 when Grove  raised the
majority of its publicly held equity and that interest  rates had been generally
favorable.  A change in either of these would likely adversely affect the future
performance  of Grove.  The Board then  reviewed  the  relative  advantages  and
disadvantages  of  various  strategic  alternatives  available  to Grove.  These
alternatives included:

         o  Grove could remain independent and pursue its business strategy;

         o  Grove could pursue a management leveraged buyout;

         o  Grove could sell its portfolio of properties and liquidate;

         o  Grove could pursue a possible  transaction with an entity other than
            EQR; or

         o  Grove could pursue a possible transaction with EQR.

         The Board discussed  management's  expectations for Grove's results for
the next  18-month  period taking into account  increasing  borrowing and equity
costs.  The  Board  noted  that  there was  increasing  competition  to  acquire
available  apartment  communities  in Grove's  market,  thereby  increasing  the
potential  costs of future  acquisitions.  The Board also  recognized  that,  if
market  conditions in the real estate industry  declined,  it would be difficult
for Grove to continue its historic  pace of growth and that any need to increase
dividends  substantially in the near future to meet REIT tax requirements  might
also  restrict   Grove's  ability  to  grow.   Based  in  part  on  management's
evaluations,  the  Board  concluded  that,  on a total  return  basis,  the sale
transaction  would be better  for the  Grove  shareholders  and the  Grove  L.P.
unitholders than remaining independent.

         In analyzing a management  leveraged  buyout of Grove,  the Board noted
that,  following  such a  transaction,  Grove  common  shares would no longer be
publicly traded. The Board noted that this could adversely affect the ability of
the holders of Grove L.P.'s  common units to redeem such units.  Management  had
also indicated that the price in such a buyout would be lower than the indicated
price suggested by EQR



                                       14
<PAGE>



because of the maximum amount which could be borrowed in such a transaction. The
Board noted that such a  transaction  would also present a number of conflict of
interest issues.


         In connection with a possible sale of Grove's  portfolio of properties,
Grove's Chief Executive Officer noted that there are contractual restrictions on
the  ability of Grove to sell  certain  of its  properties  for cash  without an
adverse  impact on Grove.  He also noted that any such strategy  would require a
significant  amount of time to complete,  introducing a degree of uncertainty as
to its success.  He indicated that the sale of all of Grove's  properties  would
likely take as long as two years to complete and that, during the process, Grove
would bear the risk of a downturn in the real estate market.


         The Board then discussed the  possibility  of Grove's  seeking to enter
into a  transaction  with a party  other than EQR.  Based on  Grove's  extensive
knowledge of the apartment REIT industry, the Board discussed logical candidates
to  acquire  Grove  other  than  EQR,   including  the  two  entities  that  had
specifically  indicated  an interest in  acquiring  Grove.  In respect of one of
these entities, the Board noted that the party did not have available the amount
of cash which  would be needed to  conclude a cash  transaction  with Grove on a
timely basis, thereby decreasing the certainty of completing such a transaction.
In the case of the other entity,  the Board noted that its  corporate  structure
would make it difficult to accomplish a transaction which would be acceptable to
the holders of Grove L.P.'s common units and that this party had never completed
a  merger-type  transaction  with an  unaffiliated  entity.  The Board noted the
experience  of EQR in  completing  acquisition  transactions  in an  expeditious
manner.

         At the conclusion of the May 25, 2000 Board meeting, the Board of Trust
Managers authorized the management of Grove to continue negotiations with EQR to
determine  if  there  were  terms  of an  exclusivity  agreement  that  might be
acceptable  to the  Board.  In making  its  determination,  the  Board  noted in
particular the indicated  terms of a transaction  with EQR, the liquidity of EQR
and its ability to fund the  transaction  and the  flexibility  in structuring a
transaction  based on the  similar  corporate  structures  of EQR and Grove.  An
information  meeting  of the  Board  was  scheduled  for  May  31,  2000 so that
management could report to the Trust Managers the status of discussions with EQR
concerning the terms of the proposed exclusivity letter.

         Thereafter,   management,  with  the  assistance  of  its  counsel  and
advisors,  continued  discussions  with EQR concerning the terms of the proposed
exclusivity agreement.  Such discussions covered a variety of topics,  including
the  reasonableness  of the  assumptions  being  used  by EQR  in  evaluating  a
transaction with Grove, the  circumstances  under which Grove would be obligated
to pay a  "break-up"  fee and the  circumstances  under which both Grove and EQR
would be  obligated  to  reimburse  the other  for  certain  expenses.  EQR also
proposed that any agreement between EQR and Grove would contain representations,
warranties  and  certain  other  terms  substantially  similar  to  those  of an
agreement  entered  into by EQR  relating to a recent  acquisition  made by EQR.
Management  of Grove and its counsel  reviewed the terms of such  agreement  for
their general acceptability.


         At the  information  meeting of the Board on May 31,  2000,  management
reviewed the status of  discussions  with EQR and  solicited the comments of the
Trust Managers.  Based on a request of the Board at its May 25 meeting,  Grove's
Chief  Executive  Officer,  with  the  assistance  of an  outside  advisor,  had
contacted a number of investment banking firms,  including Houlihan Lokey Howard
& Zukin Financial Advisors,  Inc.,  soliciting proposals to be retained by Grove
for the purpose of  rendering  an opinion as to the  fairness,  from a financial
point of view, of the consideration to be paid in any transaction  between Grove
and EQR.

         On June 9, 2000,  the Board of Trust  Managers  of Grove held a special
meeting.  Present in person or by  telephone  were all of the Trust  Managers of
Grove  together with Grove's Chief  Investment  Officer and  representatives  of
Grove's  counsel  and  its  advisor,  Jennings  Securities  LLC.  Grove's  Chief
Investment  Officer  reviewed  with the  Board the  terms of the  revised  draft
exclusivity  agreement  emphasizing  those terms that had changed since the last
draft  circulated  to the  Board.  After a full  discussion  of the terms of the
revised  draft  exclusivity  agreement,  the Board  approved the  agreement  and
authorized  its execution on behalf of Grove.  At the June 9, 2000 meeting,  the
Board also created a special committee, the Merger Oversight Committee, composed
of all of Grove's outside trust managers,  to review  independently the fairness
and




                                       15
<PAGE>



reasonableness  of the  transactions  contemplated by the exclusivity  agreement
(including the terms of the transfer of the retail properties) to the holders of
Grove's common shares and Grove L.P.'s common units.

         Prior to the June 9, 2000  meeting  and at the  request  of the  Board,
Grove's Chief Executive Officer  contacted a number of investment  banking firms
to  discuss  the  retention  of one of  them to  provide  an  opinion  as to the
fairness, from a financial point of view, with respect to both the consideration
to be received by the holders of Grove's  common  shares and Grove L.P.'s common
units in the merger  transactions  and the fairness,  from a financial  point of
view, to Grove of the  consideration  to be received by Grove in connection with
the  proposed   transfer  of  the  retail   properties.   After  discussing  the
qualifications of each of the candidates,  the Board authorized the retention of
Houlihan Lokey to provide an opinion. The Board also authorized the retention of
Jennings Securities LLC and Albrizzi-Williams,  Inc. (collectively,  "Jennings")
to provide  additional  advisory  services.  For  services  rendered to Grove in
connection with the  transactions  contemplated by the merger  agreement and the
retail  agreement,  Houlihan Lokey and Jennings would receive fees in the amount
of  $275,000  and  $150,000,  respectively,  plus the  reimbursement  of certain
expenses.

         At the June 9, 2000  meeting,  the Board  also took  action so that the
Maryland "business  combination" statute would not apply to transactions between
Grove and EQR or any of its affiliates.

         On June 12, 2000, Grove and EQR entered into the exclusivity agreement.
Thereafter,  representatives  of Grove and EQR  negotiated  toward a  definitive
merger  agreement.  At the same time,  EQR began  additional  due diligence with
respect  to Grove  and its  properties,  including  on-site  inspections.  These
activities  continued through the month of June and into July. On July 12, Grove
agreed to extend the exclusivity period to July 17, 2000.


         On July 10,  2000,  the Merger  Oversight  Committee  held a telephonic
meeting.  All of the  members of the Merger  Oversight  Committee  attended  the
meeting along with  representatives  of Grove's  counsel and Houlihan  Lokey and
Jennings.  Grove's Chief Executive Officer, its Executive Vice President and its
Chief Investment  Officer also attended the meeting for the purpose of providing
information and answering questions which members of the Committee might have.


         At the  request  of the  Chairman  of the Merger  Oversight  Committee,
Grove's counsel  reviewed the terms of the principal  agreements  which would be
entered into, including the merger agreement,  the retail agreement,  amendments
to  existing  employment  agreements,  the  schedule  of  payments to be made to
executive  officers and other employees if the  transactions are consummated and
the voting  agreements  pursuant to which  certain  persons  would agree to vote
Grove common shares and Grove L.P.  common units in favor of the mergers and the
transactions  contemplated  by the merger  agreement.  Grove's  Chief  Executive
Officer also  reviewed  the  preliminary  appraisals  provided by Italia & Lemp,
Inc.,  independent  real estate  appraisers,  addressed to the Merger  Oversight
Committee as to the value of the retail  properties.  After answering  questions
from members of the Merger  Oversight  Committee,  Grove's officers were excused
from the meeting.


         The representatives of Houlihan Lokey made a presentation to the Merger
Oversight  Committee  describing  the  methods  used by them  in  analyzing  the
fairness, from a financial point of view, of the consideration to be paid to the
holders of Grove's  common shares and Grove L.P.'s common units.  Based on these
analyses,  Houlihan  Lokey had  determined  preliminarily  that the value of the
Grove  common  shares and the Grove L.P.  common  units was below the  indicated
price  that  EQR  would  be  willing  to pay.  Houlihan  Lokey  determined  on a
preliminary basis that the  consideration to be paid in the merger  transactions
to the holders of Grove's  common  shares and Grove L.P.'s common units would be
fair,  from a financial  point of view, to them.  Houlihan  Lokey  presented its
preliminary oral opinion to that effect.


         Houlihan  Lokey also  delivered  its  preliminary  oral  opinion to the
effect  that  the  consideration  to be paid to  Grove  in  connection  with the
transfer of the retail  properties  was fair to Grove from a financial  point of
view.

         The representatives of Jennings also commented on the payments proposed
to be  made  to  the  executive  officers  of  Grove  upon  consummation  of the
transactions contemplated by the merger agreement.



                                       16
<PAGE>




They noted that Grove had  historically  paid its  executive  officers much less
total compensation than paid to executive officers at other REITs.


         Following these  presentations and their discussion of the terms of the
draft agreements,  the Merger Oversight  Committee  determined that the terms of
the draft merger agreement, the draft retail agreement and the payments proposed
to be made to the executive  officers and other employees of Grove were fair and
reasonable to Grove and to the holders of Grove's common shares and Grove L.P.'s
common units. The Merger Oversight  Committee also recommended that the Board of
Grove approve  these  agreements  and payments.  The actions taken by the Merger
Oversight  Committee  at its meeting on July 10, 2000 were taken  subject to the
receipt  of a final  opinion  of  Houlihan  Lokey  substantially  similar to the
preliminary opinion delivered at the meeting.


         In connection  with its continuing due diligence with respect to Grove,
EQR determined that Grove had certain potential liabilities which EQR determined
it was not willing to assume.  EQR indicated  further that the price it would be
willing to pay for Grove would need to be reduced by the amount,  if any,  paid,
including  costs incurred,  by Grove in connection  with either  confirming that
such issues were not  problematic  or settling any associated  liability.  There
were extensive  discussions  between EQR, Grove and their respective advisors of
the issues these potential liabilities raised and the way to resolve them. While
Grove  indicated  its  willingness  to work to clarify and resolve the potential
liabilities,  it also  indicated that it would not be willing to resolve them if
the effect would be a reduction in the  aggregate  purchase  price to be paid by
EQR by more than $3.5  million (or $0.29 per Grove  common  share and Grove L.P.
common unit).  The parties agreed to resolve these issues by obligating Grove to
use its  reasonable  good faith efforts to obtain an agreement with the Internal
Revenue  Service  addressed to closing  such issues.  The receipt of the closing
agreement and the absence of any associated  liabilities  and costs in excess of
$3.5  million  was made a condition  to both  Grove's  and ERP's  obligation  to
complete  the  mergers.  Any  amounts  paid by Grove to  settle  such  potential
liabilities  and the costs of  obtaining  the  settlement  would be borne by the
holders of  Grove's  common  shares  and Grove  L.P.'s  common  units  through a
reduction in the purchase price.


         A special  meeting of the Board of Trust  Managers was held on July 14,
2000 for the purpose of reviewing  these  developments  and of  considering  the
approval  of  a  definitive   merger   agreement  and  related   agreements.   A
representative  Grove's  independent  auditors  discussed  its  views  as to the
likelihood of a  satisfactory  resolution of the potential  liabilities  and the
timeframe for achieving that settlement.


         A  representative  of Houlihan  Lokey then  reviewed with the Board the
methodologies  employed by Houlihan  Lokey in evaluating  the  fairness,  from a
financial point of view, of the consideration to be paid to the shareholders and
unitholders in the transactions  contemplated by the merger  agreement,  and the
consideration  to be received by Grove in  connection  with the  transfer of the
retail properties.  The representative noted, in particular,  that the change to
the price to be paid to the holders of Grove's  common  shares and Grove  L.P.'s
common units based on the settlement of the potential liabilities did not affect
Houlihan  Lokey's  opinion  as to  the  fairness  of the  consideration,  from a
financial  point of view,  to the  holders  of Grove's  common  shares and Grove
L.P.'s common units.  The  representative  of Houlihan  Lokey then delivered the
opinion of Houlihan  Lokey that the  consideration  to be paid to the holders of
Grove's  common shares and Grove L.P.'s common units in the merger  transactions
was fair from a financial  point of view to the holders of Grove's common shares
and Grove L.P.'s common units and that the consideration to be received by Grove
in connection with the transfer of the retail  properties was fair to Grove from
a financial point of view.


         Following  the  presentation  by  Houlihan  Lokey,  the  Board  meeting
recessed so that the Merger Oversight Committee could meet separately.

         The Merger  Oversight  Committee  then met and reviewed the  additional
information presented to the Board. The Merger Oversight Committee also reviewed
all of the factors relating to the proposed transaction that had been considered
at its  meeting  on July 10,  2000.  Following  a full  discussion,  the  Merger
Oversight  Committee  confirmed the preliminary  conclusions and recommendations
which it had reached at its July 10 meeting.



                                       17
<PAGE>




         Following  conclusion of the meeting of the Merger Oversight Committee,
the meeting of the full Board resumed.  Following further discussion, the Board,
by unanimous vote of the Trust Managers present,  approved the merger agreement,
the retail  agreement  and the  transactions  contemplated  by them. On July 14,
2000, Houlihan Lokey delivered its written fairness opinion.


REASONS FOR THE RETAIL AGREEMENT

         The  initial   discussions   between   representatives   of  Grove  and
representatives  of EQR  focused  solely on  whether  there  might be a mutually
acceptable  basis on which EQR would  acquire  all of Grove,  including  Grove's
retail  properties.  It was not until after EQR had placed an indicated value of
$17.00 per Grove common share and Grove L.P.  common unit that EQR advised Grove
that it did not  expect to retain  Grove's  retail  properties.  EQR and four of
Grove's  executive  officers  initiated  discussions   concerning  the  possible
transfer  of the  retail  properties  to an  entity  owned  by  those  executive
officers.

         EQR's business is limited to the ownership and operation of multifamily
residential  properties.  EQR indicated that, in the event of its acquisition of
Grove,  it was not  likely  that EQR would  retain its  ownership  of the retail
properties over the long-term.  Messrs. D. Navarro, J. LaBrosse,  E. Navarro and
B. Navarro and EQR then began preliminary  discussions as to whether there was a
basis on which the four  officers  would be able to  acquire  the  ownership  of
Grove's four retail  properties.  The four officers  determined that, while they
had an interest in acquiring  ownership of the retail properties,  they would do
so only on a basis where they acquired complete ownership of the properties.

         During the course of negotiation of the  exclusivity  letter,  the four
officers  and  EQR  continued  discussions  concerning  the  possibility  of the
officers' acquiring the retail properties,  including an agreement that, if such
a transaction were to occur, the fair value of the retail properties  aggregated
$21,650,000.  This agreed  real  property  value was the result of arms'  length
negotiations between EQR and the four officers.


         In mid June,  when the  exclusivity  agreement was entered into between
EQR and  Grove,  the  agreement  contemplated  that EQR  would  permit  Grove to
transfer  the retail  properties  to the four  officers but did not require such
transfer  as a condition  to EQR's  acquisition  of Grove.  During the course of
negotiations,  EQR  required  that  this  transfer  be made a  condition  to the
mergers.  Accordingly,  in the final  merger  agreement,  transfer of the retail
properties is a condition to the obligation of ERP to consummate the mergers.


         In performing its functions,  the Merger Oversight  Committee (composed
exclusively of  non-employee  trust managers and  "independent  trust  managers"
within the meaning of Grove's Third Amended and Restated  Declaration  of Trust,
as  amended)  reviewed  fully and  carefully  the terms  upon  which the  retail
properties  would be transferred to assure that they were fair and reasonable to
Grove and Grove L.P. In its consideration of the fairness and  reasonableness of
these  transactions,  the Merger  Oversight  Committee  considered,  among other
things,  that the agreed real  property  value was  determined  by arms'  length
negotiation  between EQR and the four officers,  that the Committee received the
opinion of Houlihan Lokey to the effect that the consideration to be received by
Grove for the retail properties was fair from a financial point of view to Grove
and that the Committee received independent  appraisals from Italia & Lemp, Inc.
indicating that the fair market value of the retail properties was substantially
the same as the agreed real property value,  that such value did not reflect any
costs which  would be  incurred by Grove L.P.  had it decided to sell the retail
properties  to third  parties  and that  the  price to be paid by EQR per  Grove
common  share and Grove L.P.  common unit would be the same whether or not Grove
L.P. owned the retail properties.

         At the conclusion of its deliberations,  the Merger Oversight Committee
concluded that the  transactions  contemplated  by the agreement to transfer the
retail  properties  were fair and reasonable and  recommended  that the Board of
Trust Managers approve the agreement.



                                       18
<PAGE>



RECOMMENDATION OF THE BOARD OF TRUST MANAGERS


         The  Board  of  Trust  Managers  of Grove  recommends  that  the  Grove
shareholders  and the Grove,  L.P.  unitholders  vote in favor of approving  the
merger and the transactions contemplated by the merger agreement.


OPINION OF FINANCIAL ADVISOR-GROVE

         Grove  retained  Houlihan  Lokey to render an  opinion  as to:  (i) the
fairness,  from a financial  point of view,  to Grove's  shareholders  and Grove
L.P.'s  unitholders of the  consideration to be received by them pursuant to the
merger  agreement;  and (ii) the  fairness,  from a financial  point of view, to
Grove of the  consideration  to be  received  by Grove upon the  transfer of the
retail properties.

         Grove retained Houlihan Lokey based upon Houlihan Lokey's experience in
the  valuation  of   businesses   and  their   securities  in  connection   with
recapitalizations and similar transactions, especially with respect to REITs and
other  real  estate  companies.   Houlihan  Lokey  is  a  nationally  recognized
investment  banking  firm that is  continually  engaged in  providing  financial
advisory  services  in  connection  with  mergers  and  acquisitions,  leveraged
buyouts,  business valuations for a variety of regulatory and planning purposes,
recapitalizations,  financial restructurings, and private placements of debt and
equity securities.

         On July 14, 2000,  Houlihan Lokey  delivered its written opinion to the
Grove Board of Trust  Managers (the  "Houlihan  Lokey  Opinion"),  to the effect
that,  as of the date of such opinion,  on the basis of its analysis  summarized
below  and  subject  to  the  limitations   described   below,   that:  (i)  the
consideration  to be  received  by the Grove  shareholders  and the  Grove  L.P.
unitholders  pursuant to the merger  agreement  is fair to them from a financial
point of view;  and (ii) the  consideration  to be  received  by Grove  upon the
transfer of the retail  properties  is fair to Grove from a  financial  point of
view. The opinion does not address any other aspect of the mergers;  nor does it
constitute a  recommendation  to any  shareholder  or  unitholder as to how they
should vote at their  respective  meetings.  Houlihan Lokey has no obligation to
update the Houlihan Lokey Opinion.


         A copy of the Houlihan  Lokey  Opinion,  which  describes,  among other
things,  the  assumptions  made,  procedures  followed,  matters  considered and
limitations  on the review  undertaken,  is attached as Appendix B to this proxy
statement.  The summary of the Houlihan Lokey Opinion in this proxy statement is
qualified in its  entirety by  reference to the full text of the Houlihan  Lokey
opinion.  You are urged to, and should,  read the opinion  carefully  and in its
entirety.


         As  compensation  to Houlihan Lokey for its services in connection with
the  transactions,  Grove  agreed  to pay  Houlihan  Lokey an  aggregate  fee of
$275,000 in addition to Houlihan  Lokey's expenses in connection  therewith.  No
portion of Houlihan Lokey's fee is contingent upon the successful  completion of
the mergers or the transfer of the retail  properties.  Grove has also agreed to
indemnify  Houlihan  Lokey and  related  persons  against  certain  liabilities,
including  liabilities  under  federal  securities  laws,  arising  out  of  the
engagement  of  Houlihan  Lokey,  and to  reimburse  Houlihan  Lokey for certain
expenses.

         The Houlihan Lokey Opinion does not address Grove's underlying business
decision  to effect  the  mergers  or the  transfer  of the  retail  properties.
Houlihan  Lokey did not, and was not  requested by Grove or any other person to,
solicit  third party  indications  of interest in  acquiring  all or any part of
Grove or to make any  recommendations  as to the form or amount of consideration
to be received by Grove, the shareholders of Grove, the Grove L.P.  unitholders,
or any other person in connection with the transactions, which consideration was
determined  through  negotiations  between Grove and EQR. Houlihan Lokey was not
asked  to  opine  on and did not  express  any  opinion  as to (1) tax or  legal
consequences  of the  transactions,  including  but not  limited to tax or legal
consequences to Grove, the  shareholders of Grove or the Grove L.P.  unitholders
of  the  transactions;  (2)  the  fairness,   advisability  or  desirability  of
alternatives  to the  transactions;  (3) the fair  market  value of  Grove;  (4)
whether any unitholder  should elect to receive cash or EQR securities;  (5) the
public market values or realizable value of any EQR securities to be received as
consideration  in connection  with the  transactions or the prices at which such
EQR securities may trade in the future  following the  transactions;  or (6) the
fairness  of any  aspect of the  transactions  not  expressly  addressed  in the
Houlihan



                                       19
<PAGE>



Lokey Opinion.  Houlihan  Lokey did not perform an independent  appraisal of the
assets of Grove. Furthermore,  Houlihan Lokey did not negotiate the transactions
or advise Grove with respect to alternatives to it.

         In arriving at its opinion, Houlihan Lokey:

         o  met with Grove's senior  management and Grove's  advisors to discuss
            the  transactions,  the  operations,   financial  condition,  future
            prospects and performance of Grove;

         o  reviewed Grove's annual reports to shareholders and on Form 10-K for
            the fiscal year ended December 31, 1999 and quarterly report on Form
            10-Q for the quarter ended March 31, 2000;

         o  reviewed  forecasts and projections  prepared by Grove's  management
            with respect to Grove for the years ending December 31, 2000 through
            December 31, 2001;

         o  reviewed preliminary  appraisal  indications as prepared by Italia &
            Lemp, Inc. for the following retail properties:

            o  Cornerblock;
            o  Longmeadow Shops;
            o  The Wharf; and
            o  Freeport Shops;

         o  reviewed copies of the following agreements;

            o  a draft copy of the  exclusivity  agreement  dated June 12, 2000;
               and

            o  a Retail Transaction Structure memorandum as prepared by Cummings
               & Lockwood;

         o  conducted site visits to certain of the properties owned by Grove;

         o  reviewed  minutes  of the  meeting  on May 25,  2000 of the Board of
            Trust Managers of Grove;

         o  reviewed publicly available  information on companies Houlihan Lokey
            deemed comparable to Grove; and

         o  conducted  such  other  analyses,   studies  and  investigations  as
            Houlihan  Lokey  deemed  appropriate  under  the  circumstances  for
            rendering the opinion expressed in the Houlihan Lokey Opinion.

SUMMARY OF ANALYSES PERFORMED BY HOULIHAN LOKEY


         The following is a summary of the material  financial  analyses used by
Houlihan  Lokey in  connection  with  providing  its  opinion.  This  summary is
qualified in its entirety by reference to the full text of such  opinion,  which
is  attached as  Appendix B to this proxy  statement.  You are urged to read the
full text of the Houlihan Lokey Opinion carefully and in its entirety.

         GROVE ENTERPRISE VALUATION.  In order to determine the fairness, from a
financial point of view, to Grove's shareholders and Grove L.P.'s unitholders of
the  consideration  to be  received  by them in  connection  with  the  mergers,
Houlihan Lokey first  determined  the estimated  enterprise  value of Grove.  In
order to determine  the  estimated  enterprise  value of Grove,  Houlihan  Lokey
primarily  used the following  methodologies:  (i) a build-up  method,  based on
various capitalization rates; (ii) a portfolio approach; (iii) an



                                       20
<PAGE>



FFO approach;  and (iv) a yield approach.  The analyses  required studies of the
overall market, economic and industry conditions in which Grove operates and the
historical and projected operating results of Grove.

         BUILD-UP METHOD. Houlihan Lokey derived an indication of the enterprise
value for Grove by applying  capitalization  rates to the adjusted net operating
income of Grove's  properties as of December 31, 2000.  Houlihan  Lokey utilized
publicly  available  information  regarding  capitalization  rates  exhibited in
transactions   involving   assets  similar  in  type  and  location  to  Grove's
properties.


         By  applying  appropriate  capitalization  rates  to the  adjusted  net
operating  income of Grove's  properties,  as discussed  above,  Houlihan  Lokey
calculated  an enterprise  value of Grove,  which implied a price per share on a
fully  diluted basis of less than the per share price to be paid pursuant to the
merger agreement (i.e., $17.00 reduced by an amount not to exceed $0.29).


         PORTFOLIO  APPROACH.  Houlihan Lokey derived an indication of the range
of  enterprise  value for Grove by  applying  a  capitalization  rate to Grove's
adjusted net operating  income as of December 31, 2000.  Houlihan Lokey utilized
publicly  available  information  regarding  capitalization  rates  exhibited in
transactions   involving   assets  similar  in  type  and  location  to  Grove's
properties.


         By applying an  appropriate  capitalization  rate to the  adjusted  net
operating  income of Grove's  properties,  as discussed  above,  Houlihan  Lokey
calculated  an enterprise  value of Grove,  which implied a price per share on a
fully  diluted basis of less than the per share price to be paid pursuant to the
merger agreement.


         FFO APPROACH.  Houlihan Lokey reviewed certain financial information of
comparable  publicly  traded  companies in the apartment REIT industry  selected
solely by Houlihan Lokey.  The public  comparables  included the following eight
publicly traded companies:  Apartment and Investment and Management Company, BRE
Properties,  Inc.,  Camden Property Trust,  Essex Property Trust,  Inc.,  Gables
Residential  Trust, Mid America Apartment  Communities,  Inc., Smith Residential
Realty,  Inc.,  and Town & Country  Trust.  Houlihan  Lokey  calculated  certain
financial  ratios of the public  comparables  based on the most recent  publicly
available information.


         The  analysis  showed that the ratio of market value of equity to funds
from operations ("FFO") (i.e., the ratio of "P/FFO") selected for Grove to apply
to Grove's  next  fiscal  year end FFO  ranged  from a low of 10.0x to a high of
11.0x (the "FFO Multiples")  which compares to a P/FFO ratio of a low of 6.3x to
a high of 14.5x exhibited by the public comparables.


         Houlihan  Lokey  derived an  indication of the range of market value of
equity for Grove by applying the FFO Multiples to Grove's  representative FFO as
of December 31, 2000.


         Based upon the lowest and highest  multiples  of FFO  determined  under
this methodology, Houlihan Lokey calculated an indication of the market value of
equity  for Grove to be  reasonably  stated in the  range of $202.6  million  to
$222.9  million,  the  midpoint  of which  implies  a price per share on a fully
diluted basis of less than the per share price to be paid pursuant to the merger
agreement.

         YIELD APPROACH. Houlihan Lokey derived an indication for Grove's market
value of equity by applying the average of the  percentage of cash available for
distribution  for the public  comparables to derive an implied pay out per share
amount,  which was then applied to the average  yield of the stock price for the
public  comparables  to result in an implied  price per share on a fully diluted
basis  of less  than  the per  share  price to be paid  pursuant  to the  merger
agreement.

         RETAIL EXCHANGE  VALUATION.  Houlihan Lokey determined the value of the
four properties that include:  (a)  Cornerblock,  (b) Longmeadow  Shops, (c) The
Wharf, and (d) Freeport Shops (collectively, the "retail properties").




                                       21
<PAGE>




         In order to  determine  the  estimated  enterprise  value of the retail
properties, Houlihan Lokey primarily used the following methodologies: (1) a net
asset value approach based on various capitalization rates; and (2) an appraised
value approach.  The analyses  required studies of the overall market,  economic
and  industry  conditions  in  which  the  retail  properties  operate  and  the
historical and projected operating results of the retail properties.

         NET ASSET VALUE  APPROACH.  Houlihan  Lokey  derived an  indication  of
enterprise value for the retail properties by applying  capitalization  rates to
the net  operating  income of each of the retail  properties  as of December 31,
2000.   Houlihan  Lokey  utilized  publicly  available   information   regarding
capitalization rates exhibited in transactions  involving assets similar in type
and location to the retail properties.

         Based upon the selected capitalization rates, Houlihan Lokey calculated
an indication of enterprise value for the retail  properties to be $19.0 million
(the "Retail Exchange Value").


         APPRAISED  VALUE  APPROACH.  Houlihan  Lokey  reviewed the July 7, 2000
individual  appraisal  reports on each  Retail  Property as prepared by Italia &
Lemp, Inc.,  which concluded that, as of June 29, 2000, the aggregate  appraised
value of the Retail Properties ranged from $21.7 million to $21.9 million.

         MERGER FAIRNESS  ANALYSIS.  Based on the analyses and factors described
in the foregoing, Houlihan Lokey determined indications of equity which would be
available  to  be  allocated  to  the  shareholders  of  Grove  and  Grove  L.P.
unitholders,  prior to any costs associated with the transactions  (the "Derived
Value Per  Share").  These  indications  of equity  value were then  compared to
Grove's  common  stock  price as  exhibited  in  trading on the  American  Stock
Exchange;  and  utilized  to  determine  the value of Grove  L.P.'s  units to be
utilized as consideration in the Retail Exchange.


         Based upon the foregoing  analyses,  Houlihan Lokey  concluded that the
consideration to be received by Grove's  shareholders and Grove L.P. unitholders
in connection with the mergers is fair to them from a financial point of view.

         RETAIL EXCHANGE  ANALYSIS.  In order to determine the fairness,  from a
financial point of view, of the  consideration  to be received by Grove pursuant
to the retail agreement, Houlihan Lokey applied the average of the Derived Value
Per Share, as determined  above, to the number of units held by those Grove L.P.
unitholders  participating  in the Retail  Exchange  (the  "Unitholders'  Equity
Value").  The  Unitholders'  Equity  Value  was  then  compared  to  the  equity
transferred in connection with the retail agreement.

         Based upon the Retail  Exchange Value of $19.0 million,  Houlihan Lokey
determined  the equity  value to be  transferred  in the  transfer of the retail
properties.   From  the  Retail  Exchange  Value,   Houlihan  Lokey   subtracted
interest-bearing  debt of $7.2 million and added $2.5 million of cash, to result
in a  net  equity  value  to  be  transferred  to  the  Grove  L.P.  unitholders
participating  in the retail  agreement  of $14.3  million in  exchange  for the
unitholder's interest in Grove L.P. units.

         Based on the foregoing  analysis,  Houlihan  Lokey  concluded  that the
consideration  to be received by Grove pursuant to the retail  agreement is fair
to Grove from a financial point of view.


         In  arriving at its  fairness  opinion,  Houlihan  Lokey  reviewed  key
economic and market indicators,  including,  but not limited to, growth in Gross
Domestic  Product,  inflation rates,  interest rates,  consumer spending levels,
manufacturing  productivity levels,  unemployment rates and general stock market
performance. Houlihan Lokey's opinion is based on the business, economic, market
and other  conditions  as they existed as of July 14, 2000 and on the  projected
financial  information  provided to Houlihan Lokey as of such date. In rendering
its opinion,  Houlihan  Lokey has relied upon and assumed,  without  independent
verification,   the  accuracy  and  completeness  of  the  financial  and  other
information  provided to Houlihan  Lokey was  reasonably  prepared  and that the
financial and other information  reflected the best current available  estimates
of the financial  results and condition of Grove;  and that no material  changes
have occurred in the information  reviewed  between the date the information was
provided  and the date of the Houlihan  Lokey  Opinion.  Houlihan  Lokey did not
independently verify the accuracy or completeness of the



                                       22
<PAGE>



information   supplied  to  it  with  respect  to  Grove  and  does  not  assume
responsibility for it. Houlihan Lokey did not make any independent  appraisal of
the specific properties or assets of Grove.

         The summary  set forth  above  describes  the  material  points of more
detailed  analyses  performed  by Houlihan  Lokey in  arriving  at its  fairness
opinion.  The preparation of a fairness opinion is a complex  analytical process
involving various determinations as to the most appropriate and relevant methods
of  financial  analysis  and  application  of those  methods  to the  particular
circumstances and is therefore not readily  susceptible to summary  description.
In arriving at its opinion,  Houlihan Lokey made qualitative judgments as to the
significance  and relevance of each analysis and factor.  Accordingly,  Houlihan
Lokey believes that its analyses and summary set forth herein must be considered
as a whole and that selecting portions of its analyses,  without considering all
analyses and factors,  or portions of this  summary,  could create an incomplete
view of the  processes  underlying  the analyses  set forth in Houlihan  Lokey's
fairness  opinions.  In its analysis,  Houlihan Lokey made numerous  assumptions
with respect to Grove, industry performance,  general business, economic, market
and financial conditions and other matters, many of which are beyond the control
of the  respective  entities.  The estimates  contained in such analyses are not
necessarily  indicative  of actual  values or  predictive  of future  results or
values,  which may be more or less  favorable  than  suggested by such analyses.
However,  there were no specific factors reviewed by Houlihan Lokey that did not
support its opinion. Additionally,  analyses relating to the value of businesses
or securities are not appraisals.  Accordingly,  such analyses and estimates are
inherently subject to substantial uncertainty.

SUMMARY OF APPRAISALS OF RETAIL PROPERTIES BY ITALIA & LEMP, INC.

         The  Merger  Oversight  Committee  of Grove's  Board of Trust  Managers
retained Italia & Lemp, Inc. to perform  valuations of the retail properties and
to prepare written appraisal reports for these properties.  Italia & Lemp, Inc.,
located in Hartford,  Connecticut, is an outside party that is unaffiliated with
Grove and  Grove,  L.P.  Italia & Lemp,  Inc.  is  engaged  in the  business  of
providing professional real estate-related services on a regional basis.

         Grove paid $22,000 to Italia & Lemp, Inc. for the real estate appraisal
services which it rendered with respect to the retail properties.

         Italia & Lemp, Inc.  prepared  appraisal reports for each of the retail
properties. In its written appraisal reports, Italia & Lemp, Inc. concluded that
the aggregate market value of the retail properties was $21,750,000.

         The  appraisals of the retail  properties  are available for inspection
and copying at the  principal  executive  offices of Grove,  598 Asylum  Avenue,
Hartford,  Connecticut during regular business hours by any Grove shareholder or
Grove L.P.  unitholder or representative  who has been so designated in writing.
Grove will  provide a copy of the  appraisals  of the retail  properties  to any
Grove  shareholder or Grove L.P.  unitholder or  representative  who has been so
designated in writing upon written  request and at the expense of the requesting
shareholder or unitholder.

         PROCEDURES FOLLOWED

         In arriving at this valuation figure, Italia & Lemp, Inc. undertook the
following steps:

         o  performed a complete  appraisal  process,  as defined by the Uniform
            Standards of Professional  Appraisal  Practice (USPAP),  without any
            departures from Standard 1;

         o  inspected the retail properties;

         o  researched  and  reviewed  various  sources  of public  information,
            including,  but  not  limited  to,  demographic  statistics,  zoning
            records,  available  site  and  building  information,  and the land
            records of all comparable sales;



                                       23
<PAGE>



         o  researched  and  reviewed  sales of similar  parcels to estimate the
            value of the excess acreage, where noted;

         o  analyzed sales of improved  properties in the market area comparable
            to the retail  properties  to derive the market  value of the retail
            properties;

         o  researched  the  market  area  for  pertinent   rental  and  expense
            information  for  comparable  properties to estimate the market rent
            and pro forma operating expenses for the retail properties;

         o  obtained income and expense  information  for the retail  properties
            from Grove;

         o  prepared cash flow analyses via the Income  Capitalization  Approach
            by researching lender and investor  parameters  through  discussions
            with market participants;

         o  used  the  available   market   information  to  develop  the  Sales
            Comparison and Income Capitalization approaches; and

         o  prepared the appraisals in accordance with Title XI of the Financial
            Institutions  Reform,  Recovery and Enforcement Act of 1989 (FIRREA)
            and  the  Uniform  Standards  of  Professional   Appraisal  Practice
            (USPAP).

         BASES FOR AND METHODS OF ARRIVING AT FINDINGS

         Under an income  capitalization  approach,  anticipated future benefits
(periodic cash flows) and capital appreciation are discounted to a present value
estimate.

         Italia & Lemp,  Inc.  reviewed  market data pertaining to rental rates,
vacancy  and  collection  loss,  and  operating  expenses  to develop a reliable
estimate of net operating income for the retail properties. The method of income
capitalization  employed by Italia & Lemp,  Inc.  involved yield  capitalization
through a discounted  cash flow analysis that  forecasted  revenues and expenses
over a projected  holding period and discounted the future stream of income into
a present worth estimate of market value.

         Italia & Lemp,  Inc.  performed the income  capitalization  approach by
conducting the following steps:

         o  projecting market rent and terms for the subject property;

         o  analyzing encumbrances of the subject leases;

         o  estimating an absorption period for vacant space;

         o  estimating pro forma expense levels;

         o  extracting  lender  and  investor  parameters  from the  market  and
            incorporating them into the cash flow analysis;

         o  estimating  net operating  income and cash flow for each year of the
            holding period based upon pro forma income and expense statements;

         o  estimating a discount rate; and

         o  preparing a present  value  estimate by adding  together  discounted
            future  benefits  including  cash flow and  discounted  reversionary
            interest.



                                       24
<PAGE>



         The sales comparison  approach is based on the concept that an informed
purchaser  would  not pay more for a  property  than  the  cost of  acquiring  a
comparable property with similar utility.

         Italia & Lemp,  Inc.  conducted a search to locate sales of  properties
considered comparable to the retail properties. Adjustments to the sales data of
the  comparable  properties  were made to reflect  either  superior  or inferior
characteristics.  The adjusted sales prices revealed a range of values which was
then reconciled  into a final  indication of market value for each of the retail
properties.

         After reconciling the values for the retail properties arrived at using
the sales comparison approach and the income  capitalization  approach,  a final
value estimate was arrived at for each of the retail properties. The final value
estimates  for each of the retail  properties  considered  the current  economic
environment  and its  effect  on  real  property  values.  Italia  & Lemp,  Inc.
concluded that a sale of the retail properties at the final value estimate would
take  approximately  6  months  to 1 year  from the  date on  which  the  retail
properties were listed for sale on the open market.

         INSTRUCTIONS RECEIVED FROM GROVE

         Grove instructed  Italia & Lemp, Inc. to prepare an appraisal report to
estimate the market value of the retail properties which was to be used by Grove
to confirm the fairness and  reasonableness of such  transaction.  Neither Grove
nor the Merger Oversight  Committee  imposed any limitations upon Italia & Lemp,
Inc. with respect to the  investigations  made or  procedures  followed by it in
conducting its appraisals.

EFFECTIVE TIME OF THE TRANSACTIONS


         The closing of the merger  transactions  is  scheduled to take place on
the day of the special meeting if the merger  transactions are approved by Grove
shareholders and Grove L.P. unitholders and the other pre-closing conditions set
forth in the merger agreement are satisfied or waived.


                              THE MERGER AGREEMENT

REPRESENTATION AND WARRANTIES

         The merger agreement  contains  representations  and warranties of ERP,
Grove and Grove L.P. regarding, among other things:

         o  due organization and good standing;

         o  ownership and capitalization of subsidiaries;

         o  capitalization;

         o  other interests and sale obligations;

         o  authority to enter into the merger agreement;

         o  filings with the SEC;

         o  reliability of financial statements;

         o  compliance with applicable laws and regulations;

         o  ownership and condition of the properties;

         o  environmental matters;



                                       25
<PAGE>



         o  third party and related party transactions;

         o  employee benefits and other matters;

         o  taxation and qualification as a REIT;

         o  absence of certain legal proceedings and events;

         o  absence of payments  to  employees,  officers,  trust  managers  and
            directors;

         o  debt instruments and other obligations;

         o  insurance matters;

         o  fees and expenses incurred;

         o  undisclosed liabilities; and

         o  intellectual property.

         These representations and warranties will not survive the completion of
the mergers.

CONDITIONS TO THE TRANSACTIONS

         The  obligations  of ERP,  Grove and Grove L.P. to complete the mergers
are subject to the following conditions:


         o  approval of the merger agreement and the  transactions  contemplated
            thereby by Grove shareholders and Grove L.P. partners;


         o  effectiveness of the registration  statement  covering the ERP units
            to be issued in the  partnership  merger and the EQR  common  shares
            that might be issued upon conversion of the ERP units;

         o  absence of any  injunctions or restraints  preventing the completion
            of the mergers; and

         o  compliance with state securities laws.

         The respective obligations of ERP, Grove and Grove L.P. to complete the
mergers are subject to the following additional conditions:

         o  all  representations and warranties made by ERP in the case of Grove
            and Grove L.P.  or by Grove and Grove L.P.  in the case of ERP shall
            be true and correct as of the closing date. The  representations and
            warranties  shall be deemed  true and  correct  unless the breach of
            such  representations  and  warranties,  in  the  aggregate,   could
            reasonably  be  expected to have an adverse  effect with  respect to
            Grove, Grove L.P. or ERP respectively;

         o  ERP in the case of Grove and Grove L.P.  or Grove and Grove L.P.  in
            the case of ERP shall have  performed in all  material  respects its
            obligations under the merger agreement;

         o  as of the closing  date,  ERP in the case of Grove and Grove L.P. or
            Grove or Grove  L.P.  in the  case of ERP will not have  suffered  a
            material  adverse  change  in  its  business,   properties,  assets,
            financial condition or results of operation taken as a whole;



                                       26
<PAGE>



         o  ERP shall have  received an opinion  from  Grove's  counsel  stating
            that,  commencing  with its taxable  year ended  December  31, 1994,
            Grove  was  organized  and  has  operated  in  conformity  with  the
            requirements for  qualification as a REIT under the Internal Revenue
            Code;

         o  Grove shall have  received  an opinion  from ERP's  counsel  stating
            that,  commencing with its taxable year ended December 31, 1992, EQR
            was organized and has operated in conformity  with the  requirements
            for qualifications as a REIT under the Internal Revenue Code and ERP
            has been treated as a partnership since 1992.

         o  each of ERP and Grove shall have  received an opinion from  Maryland
            counsel  addressing   specified  issues  set  forth  in  the  merger
            agreement;

         o  ERP shall have received an opinion from Grove's  counsel  addressing
            specified issues set forth in the merger agreement;

         o  Grove shall have received an opinion from EQR's  counsel  addressing
            specified issues set forth in the merger agreement;


         o  the receipt of all consents and waivers from third parties necessary
            in connection with the completion of the  transactions  contemplated
            by the merger agreement;

         o  the  obligation of ERP to complete the company  merger is subject to
            (i)  certain  fees  relating  to the  company  merger not  exceeding
            specified amounts and (ii) the retail  agreement's being consummated
            in accordance with its terms; and

         o  Grove shall have obtained a closing agreement from the IRS, provided
            that under no circumstances is Grove obligated to obtain the closing
            agreement  if the  costs  associated  with it are in  excess of $3.5
            million,  unless ERP, in its sole  discretion,  approves such excess
            closing agreement costs.


DIVIDENDS


         Under the terms of the merger  agreement,  Grove and Grove  L.P.  would
continue to make regular  quarterly  dividends and  distributions  not to exceed
$0.18 per share/unit,  as well as a pro rated quarterly dividend for the quarter
in which the mergers become effective. However, each such dividend is subject to
a reduction to the extent that the then current  estimate of specified  fees and
expenses relating to the merger transactions exceeds  $13,002,586.  In the event
that this excess amount equals or exceeds the total amount of the dividend which
would  otherwise be permitted  under the merger  agreement,  no dividend will be
paid in that quarter and the remaining  excess  amount,  if any, will be carried
forward  and  will  reduce  the next  permitted  dividend.  For a more  detailed
description of this possible dividend reduction,  please refer to Section 5.9 of
the merger agreement, which is attached as Appendix A to this proxy statement.


TERMINATION PROVISIONS

         The  merger  agreement  may be  terminated  at any  time  prior  to the
acceptance of the  certificate  of merger by the Delaware  Secretary of State to
effectuate the partnership merger, whether the termination comes before or after
the approvals by the Grove shareholders or Grove L.P. unitholders:

         o  by the mutual consent of EQR and the Grove Board of Trust Managers;

         o  upon the breach by the non-terminating  party of any representation,
            warranty, covenant,  obligation or agreement set forth in the merger
            agreement,  such  that the  specified  conditions  set  forth in the
            merger  agreement would be incapable of being satisfied by March 31,
            2001 (or as otherwise extended);



                                       27
<PAGE>



         o  if an order, decree, judgement or other action preventing completion
            of the company merger has become final and non-appealable;

         o  if the  company  merger  has not been  completed  by March 31,  2001
            (subject to extension  to May 31, 2001 in specified  circumstances),
            provided that the terminating party has not materially  breached its
            obligations  under the merger agreement in a manner that proximately
            contributed to the merger not being completed by the relevant date;


         o  if the approval of the Grove shareholders has not been obtained upon
            a vote at the meeting of the  shareholders or if the approval of the
            Grove  L.P.  unitholders  has not been  obtained  upon a vote at the
            meeting of the partnership; or


         o  if the Grove  Board of Trust  Managers  withdraws  or  modifies  its
            approval or recommendation of the mergers or the merger agreement.

TERMINATION FEE AND EXPENSES

         The  merger   agreement   provides  for  the   payment,   in  specified
circumstances, of a break-up fee of $8.5 million and an expense fee equal to the
out-of-pocket expenses incurred in connection with the merger agreement of up to
$2 million.

         THE BREAK-UP FEE

         Grove is  required to pay the  break-up  fee to ERP if: (i) the company
merger is not consummated because the Grove Board of Trust Managers withdraws or
modifies its approval or  recommendation of the mergers or the merger agreement;
(ii) the Grove  Board of Trust  Managers  withdraws  or  modifies  in any manner
adverse  to ERP its  approval  or  recommendation  of the  mergers or the merger
agreement;  (iii) the Grove Board of Trust  Managers  approves or recommends any
superior  acquisition  proposal;  (iv) Grove enters into a definitive  agreement
with respect to any acquisition  proposal; or (v) at the time of the termination
of the merger agreement under certain circumstances, an acquisition proposal has
been  received  by Grove,  and  either  prior to the  termination  of the merger
agreement  or  within  12 months  thereafter,  Grove or any of its  subsidiaries
enters into any written acquisition proposal which is then consummated.


         Any break-up fee would be paid as compensation  and liquidated  damages
for the loss suffered by ERP as a result of the failure of the company merger to
be consummated  and to avoid the difficulty of determining the damages under the
circumstances.  Neither party shall have liability to the other after payment of
the break-up fee and expense fee.


         THE EXPENSE FEE

         Grove is obligated  to pay ERP the expense fee if the merger  agreement
is terminated due to:

         o  the breach of any representation,  warranty, covenant, obligation or
            agreement  on the part of Grove or Grove  L.P.  as set  forth in the
            merger agreement;


         o  if the Grove  shareholders do not approve the company merger and the
            transactions  contemplated  by the  merger  agreement  at the  Grove
            shareholders meeting;


         o  if the Grove L.P.  unitholders  do not approve the merger  agreement
            and the transactions contemplated thereby at the Grove L.P. partners
            meeting; or

         o  if the merger  agreement is terminated  because the mergers have not
            been consummated  before March 31, 2001 (subject to extension to May
            31, 2001) and Grove has not delivered



                                       28
<PAGE>



            to ERP either the closing agreement satisfactorily resolving certain
            potential liabilities or the required legal opinions.

         ERP is obligated  to pay Grove the expense fee if the merger  agreement
is terminated due to:

         o  the breach of any representation,  warranty, covenant, obligation or
            agreement on the part of ERP as set forth in the merger agreement.

NO SOLICITATION OF OTHER TRANSACTIONS

         Prior  to the  company  merger,  Grove  has  agreed  that it  will  not
initiate,  solicit,  or  encourage  any inquires or the making of any offer with
respect to a merger,  acquisition,  tender offer, exchange offer, consolidation,
sale of assets or similar  transaction  involving all or any significant portion
of the assets or any equity securities of it or any of its  subsidiaries,  other
than those pertaining to the merger agreement.

         Notwithstanding the above  restrictions,  the merger agreement does not
prohibit  Grove from entering into  discussions  with respect to an  unsolicited
proposal if the Grove Board of Trust Managers determines in good faith that this
action is required by the Board's legal duties to its shareholders.

CONDUCT OF BUSINESS PENDING THE TRANSACTIONS


         Except as  contemplated  by the merger  agreement  or  consented  to in
writing  by ERP,  Grove  and  Grove  L.P.  will  and  will  cause  each of their
subsidiaries  to conduct its  business  only in the usual,  regular and ordinary
course, and, among other things, to:

         o  preserve  its  business  organizations  and  goodwill  and  keep the
            services of its officers and directors available;


         o  confer  on  a  regular  basis  with  ERP  representatives  regarding
            operational  matters of  materiality  or any  proposals to engage in
            material transactions;

         o  notify ERP of any material  emergency or change in the  financial or
            operational condition of the business;


         o  provide ERP with reports,  statements,  and schedules filed with the
            SEC;


         o  consistently maintain books and records according to GAAP;

         o  timely file all reports;

         o  not make or rescind  any  express  or deemed  election  relative  to
            taxes;


         o  not  acquire  or enter  into any  option  or  agreement  to  acquire
            additional  real property,  incur  additional  indebtedness,  except
            working capital, or enter into any agreement to develop or construct
            other real estate projects, with limited exceptions;


         o  not   amend   the   Grove   declaration   of  trust  or   comparable
            organizational documents;

         o  unless  provided  for in the merger  agreement,  not issue shares of
            beneficial  interest  or  other  equity  interest,  except  upon the
            exercise of previously outstanding options;

         o  limit dividends to specified amounts;

         o  not sell,  lease,  mortgage or dispose of any  material  part of its
            assets;



                                       29
<PAGE>



         o  not make any loans, advances or capital contributions;

         o  not pay, discharge or satisfy any material claims,  liabilities,  or
            obligations other than in the ordinary course of business;

         o  not enter into any contractual obligations over an agreed amount;

         o  not guarantee the indebtedness of another person or entity;

         o  not  amend or enter  into any  commitment  with any  officer,  trust
            manager, director, or trustee;

         o  not increase  compensation  or amend any  employment  agreement with
            limited exceptions;

         o  not adopt any new employee benefit plan;

         o  not  settle  any  shareholder  or limited  partner  derivative  suit
            pertaining to the merger agreement;

         o  not reduce its ownership in any of its subsidiaries;

         o  not accept promissory notes;

         o  not  enter  into,  amend,  modify  or waive  any  rights  under  any
            agreement;

         o  continue to use its best  efforts to qualify as a REIT and not enter
            into any prohibited transactions; and


         o  with respect to the retail agreement, not amend any provision of the
            agreement or alter its normal operations of the retail properties.

         Except as  contemplated  by the merger  agreement  or  consented  to in
writing by Grove,  ERP will and will cause each of its  subsidiaries  to conduct
its business only in the usual,  regular and ordinary  course,  and, among other
things, to:


         o  preserve intact its business organizations and goodwill and keep the
            services of its officers and employees available;

         o  confer on a  regular  basis  with  Grove  representatives  regarding
            operational  matters of  materiality  or any  proposals to engage in
            material transactions;

         o  notify Grove of any material emergency or change in the financial or
            operational condition of the business;


         o  provide Grove with SEC reports, statements, and schedules filed with
            the SEC;


         o  consistently maintain books and records according to GAAP;

         o  timely file all reports;

         o  form New LLC1 and New  LLC3,  cause  New LLC1 to form New LLC2  and,
            cause  each of New  LLC1,  New LLC2 and New LLC3 to carry  out their
            obligations under the merger agreement.



                                       30
<PAGE>



WAIVER AND AMENDMENT

         At any time before the company merger, either party may:

         o  extend the time for  performance of any of the  obligations or other
            acts of the other party required by the merger agreement;

         o  waive  any  inaccuracies  in  the   representations  and  warranties
            contained  in the  merger  agreement  or in any  document  delivered
            pursuant to the merger agreement; and

         o  waive  compliance  with any of the  agreements or conditions for the
            benefit of the waiving party contained in the merger agreement.


         The merger agreement may be amended by ERP and the Grove Board of Trust
Managers at any time  before or after the  approval  by Grove  shareholders  and
Grove L.P.  unitholders but prior to the filing of the certificate of merger and
the  articles  of  merger.  After  approval  of the  merger  agreement  by Grove
shareholders and Grove L.P.  unitholders,  no amendment may be made which by law
requires the further approval of shareholders or unitholders  without  obtaining
this further approval.



                                RETAIL AGREEMENT

         The  following  is a brief  summary of the material  provisions  of the
retail agreement,  a copy of which is attached as Appendix C and is incorporated
by reference in this proxy  statement.  The summary is qualified in its entirety
by  reference  to the retail  agreement.  We urge all  shareholders  to read the
retail  agreement in its entirety for a more complete  description  of its terms
and conditions.

PARTIES

         The  parties to the retail  agreement  are Damon D.  Navarro,  Brian D.
Navarro,  Edmund F. Navarro,  Joseph R. LaBrosse,  each an executive  officer of
Grove, a limited liability company owned by these executive officers  ("Investor
LLC"), and Grove L.P.

OVERVIEW

         Immediately  prior  to  the  partnership  merger,  the  four  executive
officers will contribute to Investor LLC 998,227 partnership units of Grove L.P.
Investor  LLC will then  withdraw as a partner of Grove L.P. and  surrender  its
998,227 partnership units for redemption. As part of the redemption,  Grove L.P.
will  transfer its  ownership  interest in the  entities  owning its four retail
properties  to Investor  LLC.  This  transfer is a condition to the  partnership
merger.

REDEMPTION PAYMENT


         The redemption payment to Investor LLC will consist of (a) the transfer
on an  "as-is"  basis,  without  representation  or  warranty,  of Grove  L.P.'s
interest in the entities owning its retail  properties,  as described above, and
the name "Grove" and any trademark of which the name "Grove"  forms a part;  and
(b) a cash  redemption  payment of  approximately  $2.8  million,  calculated as
follows:

         1. Approximately  $16.97 million,  calculated by multiplying the number
of  partnership  units  surrendered  (998,227)  times the  $17.00  per unit cash
partnership merger consideration (subject to a potential reduction not to exceed
$0.29 per unit); plus

         2. The  approximately  $7.5  million  principal  amount of a loan to be
assumed by Investor LLC;

less



                                       31
<PAGE>



         3. The $21,650,000  "agreed real property value," subject to adjustment
as set forth below.

         The  agreed  real  property  value  is  $21,650,000  plus  all  capital
expenditures made with respect to the retail properties on a cash basis from and
after June 1, 2000  through the  redemption  date,  excluding  up to $135,000 of
specified capital expenditures.

         The cash redemption payment is subject to further adjustment to reflect
a proration or adjustment, calculated as of the redemption date, for real estate
and personal  property taxes and  assessments,  base rent for the month in which
the redemption  occurs,  water,  electric,  telephone and other utility charges,
contract and lease  payment  obligations,  assignable  permit fees,  interest on
assumed  debt and other  expenses of  operation  and similar  items  customarily
pro-rated in connection with real estate transactions.

EXPENSES OF TRANSFER



         Investor  LLC will pay all  transfer  taxes,  if any,  loan  assumption
charges and other costs and expenses of effecting the transactions  contemplated
by the retail agreement,  excluding legal,  accounting and other consulting fees
incurred by ERP or its affiliates.

RELATIONSHIP TO MERGERS

         It  is a  condition  to  Grove  L.P.'s  obligation  to  carry  out  the
transactions contemplated by the retail agreement that each of the conditions to
the closing of the partnership merger shall have been satisfied or waived.

                               NO APPRAISAL RIGHTS


         Grove  shareholders are not entitled to dissenters' or appraisal rights
under  Maryland law or the Grove  declaration  of trust in  connection  with the
merger or the transactions contemplated by the merger agreement.


                           CONVERSION OF UNITS/SHARES

CONVERSION OF THE GROVE SHARES


         Upon  completion  of  the  company  merger,  each  Grove  common  share
outstanding immediately prior to the completion of the company merger will cease
to be  outstanding  and will be converted  into the right to receive  $17.00 per
share payable to the shareholder in cash (subject to a potential reduction in an
amount not to exceed  $0.29 per share) upon the  surrender  of the  certificate,
less any  applicable  taxes.  Each  outstanding  option to purchase Grove shares
granted  under the  Grove  employee  stock  option  plan or any  other  employee
agreement  shall be  cancelled  and the holder shall be entitled to receive cash
equal to the value of each option based on $17.00 per share merger consideration
(subject to a potential  reduction  in an amount not to exceed $0.29 per share),
less any applicable  taxes (other than the options  granted to the  non-employee
trust managers upon their election at Grove's 2000 Annual Meeting, which will be
cancelled for no consideration).


CONVERSION OF THE GROVE L.P. UNITS


         Upon the  completion of the  partnership  merger,  each Grove L.P. unit
outstanding  immediately prior to the completion of the partnership  merger will
be canceled and converted into either 0.3696  (subject to a potential  reduction
in an amount not to exceed  0.0063  per unit  received,  resulting  in a reduced
exchange ratio of not less than 0.3633) of a limited partnership interest in ERP
or $17.00 per unit (subject to a potential  reduction in an amount not to exceed
$0.29 per unit), payable to the unitholder in cash less any applicable taxes, at
the election of the unitholder. Each unitholder of Grove L.P. will cease to have
any rights with respect thereto, other than the right to receive:




                                       32
<PAGE>




         o  $17.00 (subject to a potential  reduction in an amount not to exceed
            $0.29  per  unit)  per  Grove  L.P.  unit or  0.3696  (subject  to a
            potential  reduction  in an  amount  not to exceed  0.0063  per unit
            received,  resulting  in a reduced  exchange  ratio of not less than
            0.3633)  of an ERP  unit  (and  cash in lieu of any  fractional  ERP
            unit); and


         o  any distributions  with respect to the Grove L.P. unit held prior to
            the completion of the partnership merger.


                   EXPECTED FEDERAL INCOME TAX CONSEQUENCES TO
                       THE HOLDERS OF GROVE COMMON SHARES

         The merger will be treated as a sale of Grove's  assets,  followed by a
liquidation  of  Grove.  The  receipt  of cash by Grove  shareholders  will be a
taxable  transaction for such shareholders for federal income tax purposes under
the current  Internal  Revenue Code,  and is likely to be a taxable  transaction
under applicable state, local or foreign income tax laws.

CONSEQUENCES TO GROVE

         The deemed sale of assets  should not be taxable to Grove.  Such deemed
sale would be taxable  only if, in whole or part,  it  constituted  a prohibited
transaction,  or Grove failed to pay dividends  equal to Grove's  taxable income
for the year of the sale, including the gains recognized on the deemed sale. The
deemed sale should not be treated as a prohibited  transaction,  as the property
sold  should not be  treated  as held  primarily  for sale to  customers  in the
ordinary  course of Grove's  business,  given Grove's  operating  history.  This
result  should  obtain even  though the sale will not qualify for the  statutory
prohibited transaction exemption.

         If, for the taxable year during  which the  liquidation  occurs,  Grove
failed to distribute dividends at least equal to its taxable income for the year
of the sale,  and the capital gain  recognized  on the deemed sale,  it would be
subject to tax at the company level. As the deemed liquidating distribution will
qualify for the dividends paid  deduction,  it should be sufficient in amount to
eliminate any taxable income and capital gain recognized by Grove. Consequently,
Grove  should not be subject  to income tax on its other  taxable  income in the
year of the deemed sale or on the deemed sale of assets itself.

CONSEQUENCES TO THE SHAREHOLDERS

         While the deemed liquidating distribution by Grove will be eligible for
the  dividends  paid  deduction,   as  described  above,  such  distribution  in
liquidation  will not be  dividend  income when  received  by the  shareholders.
Distributions  in liquidation  should first reduce the basis in a  shareholder's
shares in Grove,  with any excess  amounts  constituting  a capital gain, if the
shares were held as a capital  asset.  Long-term  capital gain  recognized by an
individual shareholder will generally be subject to federal tax at a maximum tax
rate of 20%. If the liquidating  distribution is less than a shareholder's basis
in such shareholder's shares, the difference will constitute a capital loss. The
deductibility of capital losses is subject to certain limitations.  Such capital
gain or loss will be long or short term, depending upon whether such shares have
been held for more than one year.

TAXATION OF NON-UNITED STATES SHAREHOLDERS

         Because  the  liquidating  distributions  will  be  treated  as paid in
exchange for a  shareholder's  shares and not as dividends,  no  withholding  on
liquidating  distributions  will  generally  be required  because of the Foreign
Investment in Real Property Tax Act,  unless a shareholder  who was not a United
States citizen or resident owns, or has owned within the past five years,  5% or
more of Grove's outstanding shares.



                                       33
<PAGE>



         The foregoing  discussion may not be applicable  with respect to shares
received  pursuant to the  exercise of employee  stock  options or  otherwise as
compensation  or with  respect to holders of shares  that are subject to special
tax treatment under the Internal  Revenue Code, such as non-U.S.  persons,  life
insurance  companies,  dealers  in  securities,  tax-exempt  organizations,  and
financial institutions.  The discussion also may not apply to a holder of shares
in light of individual  circumstances,  including holders holding shares as part
of a straddle, a conversion transaction,  a hedging transaction or other similar
transaction.  Shareholders  are  urged to  consult  their  own tax  advisors  to
determine  the tax  consequences  of the  company  merger  particular  to  them,
including the effect of any state, local, foreign income and other tax laws.

         The  foregoing  discussion  is based  upon  current  provisions  of the
Internal Revenue Code and applicable Treasury  regulations.  Future legislative,
administrative or judicial changes or interpretations  could affect the accuracy
of the statements or conclusions  set forth herein.  Any such change could apply
retroactively and could affect the accuracy of such discussion.

         No  information  is provided  with respect to the  consequences  of the
company  merger  under  applicable  foreign,  state or local income tax or other
laws.

               MATTERS FOLLOWING THE EFFECTIVENESS OF THE MERGERS

SURRENDER OF AND PAYMENT FOR SHARES


         At the effective  time of the company  merger,  holders of Grove common
shares  will be  entitled  to receive  $17.00 in cash  (subject  to a  potential
reduction  in an amount not to exceed $0.29 per share).  As soon as  practicable
following the effectiveness of the company merger,  EquiServe,  as paying agent,
will send a letter of  transmittal  to each holder of Grove common  shares.  The
letter of transmittal will contain instructions with respect to the surrender of
certificates  representing  Grove common shares in exchange for cash. The paying
agent will accept  certificates  upon compliance with such reasonable  terms and
conditions  as the  paying  agent may impose to effect an  orderly  exchange  in
accordance with normal exchange practices.

         After the  effective  time,  there will be no further  transfer  on the
records of Grove or its transfer agent of certificates representing Grove common
shares that have been converted  pursuant to the merger agreement into the right
to receive cash. If such certificates are presented to Grove for transfer,  they
will be cancelled  against delivery of cash. Until  surrendered each certificate
representing  Grove  common  shares will be deemed after the  effective  time to
represent  only the right to  receive  upon  surrender  $17.00 per share in cash
(subject to a potential  reduction  in an amount not to exceed $0.29 per share).
No  interest  will be paid or will  accrue on any cash  payable  pursuant to the
merger agreement.


         We request that you not surrender your  certificates for exchange until
you receive a transmittal  letter and instructions.  Letters of transmittal will
be mailed promptly following the effective time of the company merger.

CERTAIN EFFECTS OF THE MERGER


         At the effective time of the company merger,  Grove will merge with and
into a wholly-owned subsidiary of ERP. The Grove common shares will no longer be
publicly  traded and will represent  only the right to receive cash.  Trading in
Grove  common  shares on the  American  Stock  Exchange  will cease at 5:00 p.m.
Eastern time on the closing date.  Grove common shares will then be deregistered
and Grove will no longer file periodic reports or proxy materials with the SEC.

         Public  shareholders will benefit by receiving cash of $17.00 per share
(subject to a potential  reduction  in an amount not to exceed $0.29 per share).
However,  public shareholders will no longer have any continuing interest in the
Grove  business and will not  participate  in any growth or earnings which Grove
might experience in the future.  To the extent cash is received by shareholders,
they will be required to consummate a taxable transaction at a time not of their
choosing. As holders of the stock of a public




                                       34
<PAGE>




corporation,  shareholders  can  choose  when  and how  much to sell in  taxable
transactions,  but this  transaction  will require the  recognition of a taxable
transaction  for all Grove  shareholders in the year in which the company merger
becomes effective (expected to be during the year 2000).


                INTERESTS OF CERTAIN PERSONS IN THE TRANSACTIONS


         The trust  managers and the executive  officers of Grove have interests
in the  transactions  contemplated  by the merger  agreement which are different
from  the  interests  of the  other  Grove  shareholders  and  the  Grove  L. P.
unitholders.  The amounts which the  executive  officers will receive upon their
termination  of employment  (which is expected to occur on the effective date of
the company merger) are substantially less than the amounts they would have been
entitled to receive under their  employment  agreements  and bonus  arrangements
which were in effect as of July 17, 2000. In addition,  the  executive  officers
and the trust managers will receive cash payments based on the number of options
they hold when the company  merger occurs  whether or not vested (other than the
options  granted to the  non-employee  trust  managers  upon their  election  at
Grove's 2000 Annual Meeting, which will be cancelled for no consideration).  The
payments to be made in respect of the stock options are based on the  difference
between the exercise  price per share under the option and $17.00  (subject to a
potential  reduction in an amount not to exceed  $0.29 per share).  In addition,
Messrs. D. Navarro, E. Navarro, B. Navarro, LaBrosse,  McNamara and Cheema, each
an executive officer of Grove, will receive the merger  consideration for shares
of Grove  which were  received  as  restricted  share  grants and are  currently
subject to forfeiture.  The following  table  indicates the amounts that will be
received  by each of  Grove's  executive  officers  upon  their  termination  of
employment and that will be received by each of Grove's  executive  officers and
trust  managers  with  respect to options for Grove  common  shares held by them
(without giving effect to potential reductions).

<TABLE>
<CAPTION>

                                                                             Maximum
                                                                           Payments in
     Name of Executive Officer or      Payments to be Received upon     Respect of Stock
            Trust Manager                Termination of Employment           Options


         <S>                                    <C>                        <C>
         Damon  D. Navarro                      $1,283,847                 $1,277,691
         Edmund F. Navarro                       1,304,987                  1,267,081
         Joseph R. LaBrosse                        924,161                  1,006,813
         Brian A. Navarro                        1,296,495                  1,267,081
         Gerald A. McNamara                        436,805                    451,389
         Munawar A. Cheema                         686,320                    490,000
         James F. Twaddell                                                    102,467
         Harold V. Gorman                                                     109,907
         J. Joseph Garrahy                                                    107,871
         J. Timothy Morris                                                     69,467
         Keith W. Munsell                                                      67,500
</TABLE>

         On July 14,  2000,  the Board of Trust  Managers  authorized a one-time
payment of $40,000  to each of the  Company's  non-employee  trust  managers  in
recognition  of their  substantial  contributions  to Grove  and its  management
during  their  tenure as trust  managers  and for their  service  on the  Merger
Oversight Committee.


         The merger  agreement  provides  that as of the  effective  date of the
company  merger,  ERP will  provide  indemnification  for the current and former
officers  and  trust  managers  of  Grove  or  any  subsidiary  of  Grove.   The
indemnification provided by ERP will be the same as the indemnification provided
by Grove to the  officers  and trust  managers of Grove or any Grove  subsidiary
immediately prior to the company merger. The  indemnification  covers actions on
or prior to the company merger,  including all transactions  contemplated by the
Merger Agreement.


         ERP has also agreed to use  commercially  reasonable  efforts to obtain
and, if obtained,  maintain in effect for a period of six years from the time of
the company merger  "run-off"  trust managers and officers  liability  insurance
with a coverage  amount and other  terms and  conditions  comparable  to Grove's
current



                                       35
<PAGE>



trust mangers and officers liability  insurance policy. The premium for the "run
off"  policy will be paid in full at the time of the  company  merger,  provided
that the premium shall not exceed $300,000.

         ERP has also agreed to pay all costs and expenses  (including  fees and
expenses of counsel) that may be incurred by any indemnified party or his or her
heirs   or   personal    representatives   in   successfully   enforcing   ERP's
indemnification obligations.

         In  the  event  of a  merger,  consolidation  or  transfer  of  all  or
substantially  all of the  properties  and assets of ERP,  ERP's  successors and
assigns would be obligated to assume these indemnification obligations.


         For a  description  of the  interest of D.  Navarro,  J.  LaBrosse,  E.
Navarro,  and B.  Navarro  in the  transfer  of the retail  properties  to occur
substantially  simultaneously  with the  partnership  merger,  see  "The  Retail
Agreement."


              MARKET PRICE OF AND DIVIDENDS ON GROVE COMMON SHARES


         Grove common  shares are listed on the  American  Stock  Exchange.  The
following  table sets forth the high and low sales prices per Grove common share
as reported by the American  Stock  Exchange and  dividends per common share for
the calendar periods shown.  Grove had  approximately 113 shareholders of record
as of the record date for the special meeting.


<TABLE>
<CAPTION>

                                                                          Dividends per
                                                                             Common
                                                    High         Low         Share
                                                    ----         ---      -------------

1998
----

<S>                                               <C>          <C>          <C>
First Quarter ................................    $ 10.938     $ 10.125     $ 0.17
Second Quarter ...............................      11.250       10.000       0.17
Third Quarter ................................      10.875        8.750       0.17
Fourth Quarter ...............................      11.750        9.250       0.17

1999
----

First Quarter ................................    $ 12.125     $ 10.438     $ 0.18
Second Quarter ...............................      13.500       10.500       0.18
Third Quarter ................................      14.000       12.125       0.18
Fourth Quarter ...............................      13.250       11.750       0.18

2000
----


First Quarter ................................    $ 13.313     $ 12.375$    $ 0.18
Second Quarter ...............................      16.500       12.750       0.18
Third Quarter (through September 20, 2000)....      16.500       16.375       0.18
                                                                            ------

</TABLE>


                         PRINCIPAL SHAREHOLDERS OF GROVE

SECURITY OWNERSHIP OF TRUST MANAGERS AND EXECUTIVE OFFICERS


         The following  table sets forth  information  as of the record date for
the special meeting regarding the beneficial ownership of Grove common shares by
each trust manager and each  executive  officer,  and by all trust  managers and
executive  officers  as a group.  Each  person  named in the  table has the sole
voting and  investment  power with respect to all shares  shown as  beneficially
owned by such person,  except as otherwise  set forth in the notes to the table.
For purposes of this table, a person is deemed to be the  beneficial  owner of a
security if that person has the option to acquire beneficial  ownership of Grove
common shares within sixty (60) days of the date of determination.  Accordingly,
the following table only reflects vested options to acquire Grove common shares,
as well as the  number  of Grove  L.P.  units  owned by such  person  which  are
redeemable with either cash or Grove common shares. For information  relating to
both  vested  and  unvested  options  held by  certain  persons  in  Grove,  see
"Interests of Certain Persons in the Transactions."




                                       36
<PAGE>


<TABLE>
<CAPTION>

                                           Number of Common        Percentage of Common

      Name of Beneficial Owner(1)               Shares                    Shares
      ------------------------             ----------------        --------------------
      <S>                                      <C>     <C>                  <C>
      Damon D. Navarro                         751,776 (2)                  8.5%
      Joseph R. LaBrosse                       332,856 (3)                  3.9%
      Edmund F. Navarro                        685,894 (4)                  7.8%
      J. Timothy Morris                      1,700,766 (5)                 20.3%
      James F. Twaddell                         48,273 (6)                     *
      Harold V. Gorman                          14,725 (7)                     *
      J. Joseph Garrahy                         19,724 (8)                     *
      Brian A. Navarro                         707,406 (9)                  8.0%
      Gerald A. McNamara                       134,766 (10)                 1.6%
      Munawar A. Cheema                        143,863 (11)                 1.7%
      Keith W. Munsell                          10,000 (12)                    *
      Trust Managers and Named
      Executive Officers as a Group
      (11 Persons)                           4,550,039 (13)                44.4%

</TABLE>

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

*  Less than 1%

(1)  Each person  listed has a business  address c/o Grove,  598 Asylum  Avenue,
     Hartford, Connecticut 06105.

(2)  Includes  331,337 common shares which might be acquired by Mr. Navarro upon
     redemption of an equal number of Grove L.P. units and 173,369 common shares
     which could be acquired within 60 days upon exercise of options.


(3)  Includes  76,833 common shares which might be acquired by Mr. LaBrosse upon
     redemption of an equal number of Grove L.P. units and 134,294 common shares
     which could be acquired within 60 days upon exercise of options.


(4)  Includes  280,357 common shares which might be acquired by Mr. Navarro upon
     redemption of an equal number of Grove L.P. units and 171,969 common shares
     which could be acquired within 60 days upon exercise of options.


(5)  Represents the common shares which are owned either by accounts  managed by
     Morgan Stanley Dean Witter Investment Management Inc. or which are owned by
     affiliates of Morgan  Stanley Dean Witter & Co., as to which Mr. Morris has
     shared voting and investment power.

(6)  Includes  15,000  common  shares  which could be  acquired by Mr.  Twaddell
     within 60 days upon exercise of options.

(7)  Represents  common  shares which could be acquired by Mr.  Gorman within 60
     days upon exercise of options.

(8)  Includes 14,862 common shares which could be acquired by Mr. Garrahy within
     60 days upon exercise of options.




                                       37
<PAGE>



(9)  Includes  323,784 common shares which might be acquired by Mr. Navarro upon
     redemption  of an equal  number of Common Units and 171,969  common  shares
     which could be acquired within 60 days upon exercise of options.

(10) Includes  40,750 common shares which might be acquired by Mr. McNamara upon
     redemption  of an equal  number of Common  Units and 54,344  Common  Shares
     which could be acquired within 60 days upon exercise of options.


(11) Includes  66,667 common shares which could be acquired by Mr. Cheema within
     60 days upon exercise of options.

(12) Represents  10,000  common  shares  which could be acquired by Mr.  Munsell
     within 60 days upon exercise of options.

(13) Includes 1,053,062 common shares which might be acquired upon redemption of
     an equal  number of Common Units and 837,199  common  shares which could be
     acquired within 60 days upon exercise of options.


SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS

         Set  forth  below is a table  indicating  those  persons  whom  Grove's
management  believes  to be  beneficial  owners  of more  than 5% of the  common
shares.  The following  information is based on reports filed with Grove and the
SEC or on other information that Grove believes is reliable.

<TABLE>
<CAPTION>

                                                                      Common Shares
                                                                       Beneficially        Percent of
         Name and Business Address of Beneficial Owner                    Owned          Common Shares
------------------------------------------------------------------------------------------------------

<S>                                                                    <C>                   <C>
Morgan Stanley Dean Witter & Co.                                       1,700,766 (1)         20.3%
1585 Broadway
New York, NY 10036

Oregon Public Employees' Retirement Fund and LaSalle Investment        1,012,729 (2)         12.1%
Management (Securities) L.P.
100 East Pratt Street, 20th Floor
Baltimore, MD 21202

Wellington Management Company, LLP                                       801,400 (3)          9.6%
75 State Street
Boston, MA 02109

Damon D. Navarro                                                         751,766 (4)          8.5%
c/o Grove Property Trust
598 Asylum Avenue
Hartford, CT 06105

Brian D. Navarro                                                         707,406 (5)          8.0%
c/o Grove Property Trust
598 Asylum Avenue
Hartford, CT 06105

Edmund F. Navarro                                                        685,894 (6)          7.8%



                                       38



<PAGE>

                                                                      Common Shares
                                                                       Beneficially        Percent of
         Name and Business Address of Beneficial Owner                    Owned          Common Shares
------------------------------------------------------------------------------------------------------

c/o Grove Property Trust
598 Asylum Avenue
Hartford, CT 06105

Cliffwood Partners, LLC                                                  426,000 (7)          5.1%
11726 San Vicente Boulevard
Suite 600
Los Angeles, CA 90049
</TABLE>

------------------------------------------
(1)  Morgan  Stanley  Dean Witter & Co. has advised  that it has sole voting and
     dispositive  power with respect to 101,799  shares and,  through its wholly
     owned  affiliate,  Morgan Stanley Dean Witter  Investment  Management Inc.,
     shares  voting and  dispositive  power with  respect to  1,578,967  shares.
     Includes 10,000 shares which could be acquired within 60 days upon exercise
     of options.

(2)  LaSalle  Investment  Management  (Securities)  L.P.  has advised  that with
     respect to such  shares it has (i) sole  voting and  dispositive  power for
     55,200  shares and (ii)  shared  voting and  dispositive  power for 957,529
     shares. It can be inferred from LaSalle Investment Management  (Securities)
     L.P.'s Schedule 13G filed with the Securities and Exchange  Commission that
     LaSalle and the State of Oregon,  Public  Employees'  Retirement Fund share
     voting and dispositive  power for shares held by LaSalle for the account of
     the State of Oregon,  Public  Employees'  Retirement Fund which exceed five
     percent of such class of securities of the Company.


(3)  Wellington  Management  Company,  LLP has advised that with respect to such
     shares it has (i) sole  voting and  dispositive  power for no shares,  (ii)
     shared voting power for 513,200 shares and (iii) shared  dispositive  power
     for 801,400 shares.


(4)  Common shares beneficially owned as of September 22, 2000. Includes 331,337
     common shares which might be acquired by Mr. Navarro upon  redemption of an
     equal  number of common  units and  173,369  common  shares  which could be
     acquired within 60 days upon exercise of options.

(5)  Common shares beneficially owned as of September 22, 2000. Includes 323,784
     common shares which might be acquired by Mr. Navarro upon  redemption of an
     equal  number of common  units and  171,969  common  shares  which could be
     acquired within 60 days upon exercise of options.

(6)  Common shares beneficially owned as of September 22, 2000. Includes 280,357
     common shares which might be acquired by Mr. Navarro upon  redemption of an
     equal  number of common  units and  171,969  common  shares  which could be
     acquired within 60 days upon exercise of options.


(7)  Cliffwood  Partners LLC has advised that with respect to such shares it has
     sole voting and dispositive power for all shares.



                                       39
<PAGE>



                                   LITIGATION

         Grove and each of its trust  managers  were named as  defendants  in an
action  commenced on July 18, 2000 by the filing of a class action  complaint by
The Taylor  Family  Trust.  The suit,  which was filed in the  Circuit  Court of
Maryland for Baltimore City, purports to be a class action.


         The complaint refers to the proposed mergers and the proposed  transfer
of Grove's four retail  properties to a limited  liability company owned by four
executive  officers of Grove.  The lawsuit  makes a number of claims,  including
that each of Grove's trust  managers  breached his fiduciary duty to the holders
of Grove's  common shares by approving  and entering into the retail  agreement,
pursuant to which the retail properties are proposed to be transferred.


         The lawsuit seeks a preliminary  and permanent  injunction  prohibiting
the merger  transactions  from proceeding,  an unwinding of the merger if it has
already been completed or the award of recissory damages, an accounting by Grove
and its trust managers for alleged damages,  and the award of plaintiff's costs,
including reasonable attorneys' fees and expenses.

         Grove  believes the suit is without merit and intends to defend against
the claims vigorously.

                           FORWARD LOOKING STATEMENTS

         This proxy statement  contains  forward-looking  statements  within the
meaning  of  The  Private  Securities  Litigation  Reform  Act  of  1995.  These
statements are based on  expectations at the time they were made and are subject
to a number of risks and uncertainties.  Statements relating to Grove's or Grove
L.P.'s   intentions,   hopes,   beliefs,   expectations   or   predictions   are
forward-looking  statements.  Grove  cautions  readers  that in  addition to the
important  factors  described  elsewhere  in this proxy  statement,  the factors
listed below,  among others,  sometimes have  affected,  and in the future could
affect,  Grove's  actual  results  and  could  cause  future  results  to differ
materially  from  those  contained  in  or  indicated  by  any   forward-looking
statements made by, or on behalf of, Grove.  There may be additional factors not
enumerated  which could have a similar  impact,  including  factors which affect
business generally, such as economic conditions.

         These factors include, but are not limited to, the following:

         o  population  shifts  which may  increase or  decrease  the demand for
            rental housing;

         o  the ability of Grove  effectively to integrate  acquired  properties
            into its  operations and to adopt its operations to the ownership of
            properties with varying characteristics;


         o  the value of commercial  and  residential  rental  properties in the
            Northeast,  where  all  of  Grove's  properties  are  located,  have
            fluctuated considerably in recent years;


         o  the effect on Grove's  properties of competition  from new apartment
            complexes  which may be completed  in  proximity to such  properties
            thereby increasing competition;

         o  the effect of weather and other conditions  which can  significantly
            affect property operating expenses;

         o  the availability of acquisition financing or refinancing; and

         o  compliance  with  applicable  laws and  regulations,  including  the
            regulations of HUD and MHFA.



                                       40
<PAGE>



         Although  Grove  believes  that  its  properties  will  continue  to be
attractive  to  tenants  and that it will be able to  control  expenses,  future
revenue and  operating  trends  cannot be reliably  predicted.  These trends may
cause Grove to adjust its operation in the future.  Because of the foregoing and
other  factors,  recent trends should not be considered  reliable  indicators of
future financial results or stock prices.

                                  OTHER MATTERS

         Pursuant  to Grove's  bylaws,  no other  business  is  permitted  to be
transacted at the special meeting.


         On any  motion to  adjourn  the  special  meeting,  only  those  shares
represented  by proxies  entitled to vote FOR  approval of the Merger  Agreement
will be voted by the named proxies FOR such adjournment.

                          FUTURE SHAREHOLDER PROPOSALS

         Due to the  contemplated  consummation  of the mergers,  Grove does not
currently  expect to hold a 2001 annual  meeting of  shareholders  because Grove
will be  merged  with and into a  subsidiary  of ERP and  will  cease to  exist.
However, if the mergers are not consummated,  Grove does intend to hold its 2001
annual meeting in the normal course of business.  In this case, the shareholders
of Grove would  continue to be entitled to attend and  participate in the annual
meeting.

         In the event the mergers are not  consummated  and the meeting is held,
because the date of Grove's  2001 annual  meeting may have to be changed by more
than 30 days from the date of the company's 2000 annual meeting, the regulations
of the  Securities  and Exchange  Commission  provide  that,  to be eligible for
inclusion in Grove's proxy  statement  and form of proxy  relating to the annual
meeting,  proposals of Grove shareholders intended to be presented at the annual
meeting  must be  received  by the  Secretary  of  Grove,  at  Grove's  place of
business,  within a  reasonable  time before  Grove begins to print and mail its
proxy statement to its  shareholders in connection with the meeting.  Grove will
inform its shareholders of the date by which the proposals must be received.

         If you wish to submit  proposals  for  consideration  at  Grove's  2001
annual  meeting  without  including  them in  Groves  proxy  statement  for that
meeting, you must notify Grove of your intentions a reasonable time before Grove
mails its proxy  materials  for that  meeting.  Should you fail to do this,  the
persons named as proxies in Grove's proxy  statement for its 2001 annual meeting
may exercise their discretionary authority to vote on your proposals.




                                       41








<PAGE>



                                                                      APPENDIX A






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








                          AGREEMENT AND PLAN OF MERGER

                                      among

                              GROVE PROPERTY TRUST

                              GROVE OPERATING, L.P.

                                       and

                        ERP OPERATING LIMITED PARTNERSHIP

                            Dated as of July 17, 2000








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



<PAGE>


<TABLE>
<CAPTION>

                                TABLE OF CONTENTS
                                -----------------
<S>                                                                                              <C>
Article                                                                                          Page
-------                                                                                          ----

ARTICLE 1 THE MERGERS...............................................................................1
     1.1      The Partnership Merger................................................................1
     1.2      The Company Merger....................................................................2
     1.3      Closing...............................................................................2
     1.4      Effective Times.......................................................................2
     1.5      Effect of Company Merger on Operating Agreement of New LLC3...........................2
     1.6      Effect of Partnership Merger on Agreement of Limited Partnership......................2
     1.7      Effect of Partnership Merger on Grove LP Units........................................2
     1.8      Effect of Company Merger on Shares....................................................3
     1.9      Receipt of Consideration..............................................................4
     1.10     Transfer Books........................................................................6
     1.11     No Further Ownership Rights in Shares.................................................6
     1.12     Adjustment to Merger Consideration....................................................6

ARTICLE 2 REPRESENTATIONS AND WARRANTIES OF GROVE AND GROVE OP......................................6
     2.1      Organization, Standing and Power of Grove and Grove OP................................6
     2.2      Grove Subsidiaries....................................................................7
     2.3      Capital Structure.....................................................................8
     2.4      Other Interests and Sale Obligations..................................................9
     2.5      Authority; Noncontravention; Consents.................................................9
     2.6      SEC Documents; Financial Statements; Undisclosed Liabilities.........................11
     2.7      Absence of Certain Changes or Events.................................................11
     2.8      Litigation...........................................................................12
     2.9      Properties...........................................................................12
     2.10     Consultants and Related Party Transactions...........................................15
     2.11     Employee Benefits....................................................................16
     2.12     Employee Matters.....................................................................17
     2.13     Taxes................................................................................18
     2.14     No Payments to Employees, Officers, Trust Managers or Directors......................18
     2.15     Brokers; Schedule of Fees and Expenses...............................................19
     2.16     Compliance with Laws.................................................................19
     2.17     Contracts; Debt Instruments..........................................................19
     2.18     Opinion of Financial Advisor.........................................................21
     2.19     State Takeover Statutes..............................................................21
     2.20     Registration Statement...............................................................21
     2.21     Development Properties...............................................................21
     2.22     Investment Company Act of 1940.......................................................21
     2.23     Trademarks, Patents and Copyrights...................................................21
     2.24     Insurance............................................................................22
     2.25     Definition of Knowledge of Grove.....................................................22
     2.26     Vote Required........................................................................22
     2.27     Secured Credit Facility..............................................................22
     2.28     Assumption of Secured Debt...........................................................22
     2.29     Certain Fees.........................................................................22

ARTICLE 3 REPRESENTATIONS AND WARRANTIES OF ERP....................................................22
     3.1      Organization, Standing and Power of ERP..............................................22
     3.2      Capital Structure of ERP.............................................................23
     3.3      Authority; Noncontravention; Consents................................................23






                                       i
<PAGE>






     3.4      SEC Documents; Financial Statements; Undisclosed Liabilities.........................23
     3.5      Absence of Certain Changes or Events.................................................24
     3.6      Litigation...........................................................................24
     3.7      Properties...........................................................................24
     3.8      Environmental Matters................................................................25
     3.9      Taxes................................................................................25
     3.10     Brokers..............................................................................26
     3.11     Compliance with Laws.................................................................26
     3.12     Contracts; Debt Instruments..........................................................26
     3.13     State Takeover Statutes..............................................................26
     3.14     Registration Statement...............................................................26
     3.15     Investment Company Act of 1940.......................................................26
     3.16     Definition of Knowledge of ERP.......................................................26
     3.17     Vote Required........................................................................26
     3.18     Employee Policies....................................................................27
     3.19     Financing............................................................................27
     3.20     Validity of Securities Issued........................................................27

ARTICLE 4 COVENANTS................................................................................27
     4.1      Acquisition Proposals................................................................27
     4.2      Conduct of Grove's Business Pending Merger...........................................28
     4.3      Conduct of ERP's Business Pending Merger.............................................30
     4.4      Other Actions........................................................................31
     4.5      Compliance with the Securities Act...................................................31

ARTICLE 5 ADDITIONAL COVENANTS.....................................................................31
     5.1      Preparation of the Registration Statement and the Proxy Statement; Grove
              Shareholders Meeting and Grove OP Partners Meeting...................................31
     5.2      Access to Information: Confidentiality...............................................33
     5.3      Best Efforts; Notification...........................................................33
     5.4      Costs of Transaction.................................................................33
     5.5      Public Announcements.................................................................33
     5.6      Taxes................................................................................34
     5.7      Benefit Plans and Other Employee Arrangements........................................34
     5.8      Indemnification......................................................................35
     5.9      Declaration of Dividends and Distributions...........................................36
     5.10     Notices..............................................................................36
     5.11     Resignations.........................................................................36
     5.12     Third Party Management Agreements and Outside Management Agreements..................36
     5.13     Modification of Rosenthal Transactions...............................................37
     5.14     Retail Sale Agreement................................................................37
     5.15     Election to Undertake Deficit Restoration Obligation Under ERP Agreement.............37
     5.16     Transfer of Grove LP Units...........................................................37
     5.17     Transfer of Grove Corp. Shares.......................................................37

ARTICLE 6 CONDITIONS...............................................................................37
     6.1      Conditions to Each Party's Obligation to Effect the Mergers..........................37
     6.2      Conditions to Obligations of ERP.....................................................38
     6.3      Conditions to Obligations of Grove...................................................39

ARTICLE 7 TERMINATION, AMENDMENT AND WAIVER........................................................40
     7.1      Termination..........................................................................40
     7.2      Certain Fees and Expenses............................................................41


                                       ii


<PAGE>

     7.3      Effect of Termination................................................................42
     7.4      Amendment............................................................................42
     7.5      Extension; Waiver....................................................................43

ARTICLE 8 GENERAL PROVISIONS.......................................................................43
     8.1      Nonsurvival of Representations and Warranties........................................43
     8.2      Notices..............................................................................43
     8.3      Interpretation.......................................................................44
     8.4      Counterparts.........................................................................44
     8.5      Entire Agreement; No Third-Party Beneficiaries.......................................44
     8.6      Governing Law........................................................................44
     8.7      Assignment...........................................................................44
     8.8      Enforcement..........................................................................44
     8.9      Severability.........................................................................44
     8.10     Non-Recourse to Trustees, Trust Managers and Officers................................45

</TABLE>


                                    EXHIBITS

Exhibit "A"       -        Agreement of Merger
Exhibit "B"       -        Company Articles of Merger
Exhibit "C"       -        Opinion of Maryland Counsel
Exhibit "D"       -        Opinion of Cummings & Lockwood
Exhibit "E"       -        Opinion of Piper Marbury Rudnick & Wolfe




                                       iii
<PAGE>



                          AGREEMENT AND PLAN OF MERGER
                          ----------------------------

         THIS  AGREEMENT  AND PLAN OF MERGER (this  "Agreement")  is dated as of
July 17,  2000 by and among  ERP  OPERATING  LIMITED  PARTNERSHIP,  an  Illinois
limited  partnership  ("ERP"),  GROVE  PROPERTY  TRUST,  a Maryland  real estate
investment  trust  ("Grove"),  and GROVE  OPERATING,  L.P.,  a Delaware  limited
partnership ("Grove OP").

                                R E C I T A L S:
                                ----------------

         WHEREAS,  the General Partner of ERP and the Board of Trust Managers of
Grove (the  "Grove  Board"),  the sole  general  partner of Grove OP,  have each
approved the  acquisition  of the business and assets of Grove by ERP, with such
acquisition  being effected by the  transactions  described  herein,  including,
without  limitation,  the Partnership Merger and Company Merger (each as defined
below and collectively referred to as the "Mergers");

         WHEREAS,  ERP shall form a single  member  Delaware  limited  liability
company ("New LLC"),  which in turn shall form a second  single member  Delaware
limited liability company ("New LLC2");

         WHEREAS,  the General  Partner of ERP and the Grove Board have approved
(i) the merger of New LLC2 with and into Grove OP (the "Partnership Merger") and
(ii)  immediately  following the  Partnership  Merger,  the merger (the "Company
Merger")  of Grove  with and into a single  member  Maryland  limited  liability
company to be formed by ERP ("New LLC3"),  all upon the terms and subject to the
conditions set forth herein;

         WHEREAS, Grove has received a fairness opinion relating to the Mergers,
as more fully described herein;

         WHEREAS,  the Grove Board has: (i) determined that the consideration to
be paid for each  outstanding unit of limited  partnership  interest in Grove OP
(each an "Grove LP Unit") in the  Partnership  Merger is fair to and in the best
interests of the limited  partners of Grove OP (the  "Limited  Partners");  (ii)
determined  that the  consideration  to be paid for each issued and  outstanding
share of beneficial interest, $.01 par value per share, of Grove (each a "Share"
or  "Grove  Common  Share")  in the  Company  Merger  is fair to and in the best
interests of the  shareholders  of Grove;  and (iii) approved this Agreement and
the transactions  contemplated hereby,  declared their advisability and resolved
to  recommend  approval and adoption of this  Agreement by the  shareholders  of
Grove and Limited Partners; and

         WHEREAS,   ERP,   Grove   and   Grove  OP   desire   to  make   certain
representations, warranties and agreements in connection with the Mergers.

         NOW,  THEREFORE,  in  consideration  of the  premises,  and the  mutual
representations,  warranties,  covenants and agreements  contained  herein,  the
parties hereto hereby agree as follows:

                                    ARTICLE 1
                                    ---------

                                   THE MERGERS
                                   -----------

         1.1 THE PARTNERSHIP  MERGER.  Prior to the Partnership Merger Effective
Time (as defined  below),  and subject to and upon the terms and  conditions  of
this Agreement, an Agreement of Merger in substantially the form attached hereto
as Exhibit "A" (the  "Agreement  of Merger")  shall be executed and delivered by
Grove OP and New LLC2.  Pursuant to the terms of the  Agreement of Merger,  upon
the terms and subject to the  conditions  of this  Agreement,  and in accordance
with Section  18-209 of the  Delaware  Limited  Liability  Company Act (the "LLC
Act") and Section 17-211 of the Delaware Revised Uniform Limited Partnership Act
(the  "DRULPA"),  New LLC2 shall be merged with and into Grove OP, with Grove OP
as the surviving entity (the "Surviving Partnership").




<PAGE>


         1.2 THE COMPANY MERGER. Upon the terms and subject to the conditions of
this  Agreement,  immediately  following the  effectiveness  of the  Partnership
Merger,  and in accordance  with Title 8 of the  Corporations  and  Associations
Article of the Annotated Code of Maryland,  as amended  ("Title 8") and Title 4A
of the Corporations and Associations  Article of the Annotated Code of Maryland,
as amended ("Title 4A"),  Grove shall be merged with and into New LLC3, with New
LLC3 as the surviving entity (the "Surviving Company").

         1.3 CLOSING.  The closing of the Mergers ("Closing") will take place at
8:00 a.m. local time on the date to be specified by the parties,  which (subject
to satisfaction or waiver of the other  conditions set forth in Article 6) shall
be no later  than the third  business  day after  satisfaction  or waiver of the
conditions set forth in Section 6.1(a) (the "Closing  Date"),  at the offices of
Piper Marbury  Rudnick & Wolfe,  203 North  LaSalle  Street,  Chicago,  Illinois
60601,  unless  another  date or place is agreed to in  writing  by the  parties
hereto.

         1.4 EFFECTIVE TIMES. As soon as practicable  following the satisfaction
or waiver of the  conditions set forth in Article 6 by the party entitled to the
benefit of the same:

              (a) Grove OP shall  execute  and file a  Certificate  of Merger in
substantially  the form  attached to the  Agreement of Merger (the  "Partnership
Certificate  of Merger"),  executed in  accordance  with the LLC Act and DRULPA,
with  the  Office  of  the  Secretary  of  State  of  Delaware  (the   "Delaware
Secretary"),  and shall make all other filings and recordings required under the
LLC  Act  and  DRULPA.  The  Partnership  Merger  shall  become  effective  (the
"Partnership Merger Effective Time") upon filing of the Partnership  Certificate
of Merger.  Unless  otherwise  agreed,  the parties shall cause the  Partnership
Merger Effective Time to occur on the Closing Date.

              (b) Immediately  following the Partnership  Merger Effective Time,
New LLC3 and Grove shall  execute and file  Articles of Merger in  substantially
the form  attached  hereto as Exhibit "B" (the  "Company  Articles of  Merger"),
executed in accordance  with Title 8 and Title 4A, with the State  Department of
Assessments and Taxation of Maryland (the "Maryland Department"), and shall make
all other  filings  and  recordings  required  under  Title 8 and Title 4A.  The
Company Merger shall become  effective (the "Company Merger  Effective Time") at
such time as shall be  specified  in the  Company  Articles  of  Merger.  Unless
otherwise  agreed,  the parties shall cause the Company Merger Effective Time to
occur on the Closing Date.

         1.5 EFFECT OF COMPANY  MERGER ON OPERATING  AGREEMENT OF NEW LLC3.  The
Operating  Agreement  of New LLC3 shall  continue in full force and effect after
the Company Merger Effective Time until amended in accordance with Delaware law.

         1.6 EFFECT OF PARTNERSHIP  MERGER ON AGREEMENT OF LIMITED  PARTNERSHIP.
The  Agreement  of Limited  Partnership  of Grove OP, as amended  (the "Grove OP
Agreement"),  shall  continue  in full  force and effect  after the  Partnership
Merger  Effective  Time until  further  amended in  accordance  with  applicable
Delaware law.

         1.7 EFFECT OF PARTNERSHIP  MERGER ON GROVE LP UNITS. At the Partnership
Merger  Effective  Time,  by virtue of the  Partnership  Merger and  without any
action  on the  part  of  ERP,  Grove,  Grove  OP or the  holders  of any of the
following securities:

              (a)  CONVERSION  OF GROVE LP UNITS.  Each Grove LP Unit issued and
outstanding   immediately  prior  to  the  Partnership   Merger  Effective  Time
(excluding any Grove LP Units to be canceled  pursuant to Section  1.7(b)) shall
be canceled and  converted  into the right to receive,  subject to the terms and
condition of this Agreement, at the election of the Limited Partner holding such
Grove LP Unit made  pursuant to Section  1.9(c),  either (i) $17.00 per Grove LP
Unit (the "Partnership Cash Merger Consideration") payable to the holder thereof
in cash,  without interest thereon,  less any required  withholding of taxes, or
(ii) 0.3696  units  ("ERP  Units") of limited  partnership  interest in ERP (the
"Partnership Unit Merger  Consideration" and, together with the Partnership Cash
Merger Consideration, the "Partnership Merger Consideration"). If, from the date
hereof until the Partnership  Merger  Effective Time, ERP (i) pays a dividend or
makes a distribution on ERP Units in ERP Units,  (ii) subdivides the outstanding
ERP Units into a greater number of ERP Units or (iii)  combines the  outstanding
ERP Units  into a smaller  number of ERP  Units,  the  Partnership  Unit  Merger
Consideration  shall be  adjusted  to reflect  the  proportionate  change in the
number of outstanding  ERP Units. It is the intention of the parties hereto that
the payment of the Partnership Cash Merger  Consideration  shall be treated as a
purchase by ERP of the Grove LP Units




                                       2
<PAGE>




of each  Limited  Partner  who elects to receive  the  Partnership  Cash  Merger
Consideration pursuant to Proposed Treasury Regulation ss.1.708-1(c)(3).

              (b)  CANCELLATION.  Each  Grove LP Unit  held by Grove OP and each
Grove LP Unit owned by ERP or any direct or indirect wholly-owned  subsidiary of
Grove or ERP immediately  prior to the Partnership  Merger Effective Time shall,
by virtue of the  Partnership  Merger and  without any action on the part of the
holder thereof, cease to be outstanding, be canceled and retired without payment
of any consideration therefor and cease to exist.

              (c) CONVERSION OF INTERESTS IN NEW LLC2. At the Partnership Merger
Effective Time, each interest in New LLC2 shall be automatically  converted into
one Grove LP Unit.

              (d) CONVERSION OF GENERAL PARTNER  INTEREST.  Each unit of general
partnership interest in Grove OP shall be unaffected by the Partnership Merger.

              (e) FUTURE CONTINGENT VALUE DISTRIBUTIONS. The right of any person
to receive  Grove LP Units at any time in the future with respect to  Contingent
Earnout Rights, as defined and contemplated in that certain Agreement,  dated as
of April 22, 1998, as amended by that certain Amendment to Conveyance Agreement,
dated as of August 31, 1998 (the "McNeil Conveyance  Agreement"),  involving the
acquisition  by Grove  Corporation  of  certain  properties  owned by 22 limited
partnerships  affiliated with Alexander H. McNeil,  shall convert into the right
to receive that number of ERP Units calculated in accordance with and subject to
all of the other  terms and  conditions  contemplated  in the McNeil  Conveyance
Agreement;  provided,  however,  that any reference in such  agreements to Grove
Shares  shall be deemed  to refer to  common  shares  ("EQR  Common")  of Equity
Residential  Properties  Trust, a Maryland real estate investment trust ("EQR"),
as traded on the New York Stock Exchange, Inc. (the "NYSE").

         1.8 EFFECT OF COMPANY MERGER ON SHARES. At the Company Merger Effective
Time, by virtue of the Company Merger and without any action on the part of ERP,
Grove, Grove OP or the holders of any of the following securities:

              (a)  CONVERSION  OF  SHARES.  Each Share  issued  and  outstanding
immediately  prior to the Company Merger Effective Time (excluding any Shares to
be canceled  pursuant to Section  1.8(b)) shall be cancelled and converted  into
the right to receive,  subject to the terms and  conditions  of this  Agreement,
$17.00  per Share (the  "Company  Merger  Consideration")  payable to the holder
thereof in cash, without interest thereon, upon the surrender of the certificate
formerly  representing such Share,  less any required  withholding of taxes. The
Company Merger  Consideration  shall be payable in cash without interest thereon
in accordance with Section 1.9 as soon as practicable after the Deposit Date, as
defined herein.

              (b)  CANCELLATION.  Each Share held in the  treasury  of Grove and
each Share owned by ERP or any direct or  indirect  wholly-owned  subsidiary  of
Grove,  Grove OP or ERP immediately  prior to the Company Merger  Effective Time
shall, by virtue of the Company Merger and without any action on the part of the
holder thereof, cease to be outstanding, be canceled and retired without payment
of any consideration therefor and cease to exist.

              (c) STOCK  OPTIONS.  Except as  specifically  set forth in Section
5.7(c), at the Company Merger Effective Time, each outstanding option (an "Grove
Option") to purchase  Shares  granted  under or pursuant to any  employee  stock
option plan or agreement entered into by Grove with any employee of Grove or any
subsidiary  thereof  or any other  person  listed on  Schedule  2.3 of the Grove
Disclosure  Letter (as defined  herein) or otherwise  existing (the "Grove Stock
Option  Plans"),  shall be cancelled and the holder thereof shall be entitled to
receive in cash (the "Total Option Amount") an amount,  if any, (less applicable
withholding  taxes) equal to the product of: (i) the number of Shares previously
subject to such Grove Option,  whether  vested or unvested,  multiplied by; (ii)
the excess, if any, of the amount of the Company Merger  Consideration  over the
exercise price per Share  previously  subject to such Grove Option,  payable not
later than the Trading Day  immediately  following the Company Merger  Effective
Time.



                                       3
<PAGE>



         1.9  RECEIPT OF CONSIDERATION.

              (a) PAYMENT AGENT. Prior to the Partnership Merger Effective Time,
a bank or trust  company  reasonably  acceptable to Grove shall be designated by
ERP to act as agent in connection with the Mergers to receive the funds to which
holders of Shares and Grove LP Units shall become entitled  pursuant to Sections
1.7 and 1.8 (the "Paying Agent").

              (b)  PROCEDURES  FOR  RECEIPT  OF  COMPANY  MERGER  CONSIDERATION.
Promptly after the Company Merger  Effective  Time, the Surviving  Company shall
cause to be mailed to each holder of record,  as of the Company Merger Effective
Time, of a certificate or certificates (the  "Certificates")  that, prior to the
Company  Merger  Effective  Time,  represented  Shares,  a  form  of  letter  of
transmittal  and  instructions  for  use  in  effecting  the  surrender  of  the
Certificates for payment of the Company Merger Consideration  therefor. Upon the
surrender of each such Certificate formerly  representing Shares,  together with
such letter of  transmittal,  duly completed and validly  executed in accordance
with the instructions  thereto,  the Paying Agent shall pay the holder of record
of such Certificate the Company Merger Consideration multiplied by the number of
Shares formerly represented by such Certificate,  in exchange therefor, and such
Certificate  shall  forthwith be canceled.  Until so surrendered  and exchanged,
each such Certificate  (other than Shares held by ERP or Grove, or any direct or
indirect  subsidiary  thereof) shall  represent  solely the right to receive the
Company Merger Consideration. No interest shall be paid or accrue on the Company
Merger Consideration.

              (c) PROCEDURES FOR RECEIPT OF PARTNERSHIP MERGER CONSIDERATION.

              (i) All elections by Limited  Partners to receive the  Partnership
Cash Merger Consideration or Partnership Unit Merger Consideration shall be made
on a form  furnished  by ERP  for  that  purpose  (a  "Form  of  Election")  and
reasonably satisfactory to Grove. Each Limited Partner may only make an election
to receive all Partnership Cash Merger  Consideration or Partnership Unit Merger
Consideration in exchange for all of its Grove LP Units.

              (ii) Together with the Prospectus (as defined herein),  ERP or the
Paying  Agent shall mail a Form of Election to record  holders of Grove LP Units
as of the record date for the Grove OP Partners  Meeting (as defined below) (the
"Record Date").  Elections  shall be made by Limited  Partners by delivering the
Form of Election to the Paying Agent,  as indicated in the Form of Election.  To
be  effective,  a Form  of  Election  must be  properly  completed,  signed  and
submitted  to the  Paying  Agent by 5:00 p.m.  (New York City  time) on the last
Trading  Day (as  defined  below)  prior  to the date of the  Grove OP  Partners
Meeting  or such other  time and date as ERP and Grove may  mutually  agree (the
"Election  Deadline").  ERP will have the  discretion,  which it may delegate in
whole or in part to the Paying  Agent,  to determine  whether  Forms of Election
have been properly  completed,  signed and submitted or revoked and to disregard
immaterial defects in Forms of Election.  The good faith decision of ERP (or the
Paying Agent) in such matters shall be conclusive  and binding.  Neither ERP nor
the Paying Agent will be under any obligation to notify any person of any defect
in a Form of Election submitted to the Paying Agent. The Paying Agent shall also
make all  computations  contemplated  by Section 1.7 and this Section 1.9(c) and
all such computations shall be conclusive and binding on the Limited Partners in
the absence of manifest  error.  Any Form of Election  may be changed or revoked
prior to the Election  Deadline.  For purposes hereof,  if a Limited Partner (i)
does not submit a Form of Election  which is received by the Paying  Agent prior
to the  Election  Deadline  (including  a Limited  Partner  who submits and then
revokes  his or her Form of  Election  and does not  resubmit a Form of Election
which is timely received by the Paying Agent) or (ii) submits a Form of Election
which is defective  in any manner such that the Paying  Agent cannot  reasonably
determine the election preference of the Limited Partner submitting such Form of
Election,  then such  Limited  Partner  shall be deemed for all purposes of this
Agreement  to have  validly  elected  to receive  the  Partnership  Cash  Merger
Consideration  with respect to the Grove LP Units held by such Limited  Partner.
Except as specifically provided in Section 5.13, any Persons (as defined herein)
acquiring Grove LP Units after the Record Date shall be entitled to receive only
that form of Partnership Merger Consideration  previously validly elected by the
transferor  of such Grove LP Units or, to the extent no such valid  election was
made by such  transferor  in accordance  with this Section 1.9, the  Partnership
Cash Merger Consideration.





                                       4
<PAGE>




              (iii) Following the Partnership  Merger  Effective Time, a Limited
Partner  shall be  entitled  to receive  the amount of  Partnership  Cash Merger
Consideration or Partnership Unit Merger  Consideration,  as the case may be, as
calculated in accordance  with Section 1.7. The Paying Agent shall  promptly pay
to each Limited Partner any Partnership Cash Merger  Consideration to which such
Limited  Partner is entitled  pursuant to this Section 1.9. No interest shall be
paid or accrue on the Partnership Cash Merger Consideration. With respect to any
Partnership Unit Merger  Consideration to which such Limited Partner is entitled
pursuant to this Section 1.9, ERP shall  promptly  mail to such Limited  Partner
the documentation  necessary to reflect such Limited Partner's ownership of that
number of ERP Units calculated  pursuant to this Section 1.9 including,  without
limitation,  a signature  page to the Fifth  Amended and  Restated  Agreement of
Limited  Partnership of ERP dated as of August 1, 1998 (the "ERP Agreement") for
execution by such Limited Partner,  which execution shall be a condition to such
Limited  Partner's  receipt of ERP Units.  Notwithstanding  any other  provision
hereof,  no  fractional  ERP  Units  shall  be  issued  in  connection  with the
Partnership Merger.  Instead,  each Limited Partner having a fractional interest
arising  upon the  conversion  of such  Limited  Partner's  Grove  LP Units  for
Partnership Unit Merger  Consideration  shall be paid an amount in cash equal to
the Closing Price (as hereinafter  defined) multiplied by the fraction of an ERP
Unit to which such Limited Partner would otherwise be entitled.  For purposes of
this Section 1.9,  "Closing  Price" shall mean the  unweighted  average  closing
price of a share of EQR Common (as reported in the NYSE Composite  Tape) for the
five (5) Trading Days  immediately  preceding the Partnership  Merger  Effective
Time,  and "Trading Day" shall mean any day on which EQR Common is traded on the
NYSE and reported on its Composite Tape.

              (d)  CONSIDERATION.  Within  three  (3)  Trading  Days  after  the
Partnership  Merger  Effective Time (the "Deposit  Date"),  ERP or the Surviving
Company shall deposit, or cause to be deposited, in trust with the Paying Agent,
(i) the amount of Company Merger  Consideration to which holders of Shares shall
be entitled at the Company  Merger  Effective  Time  pursuant to Section  1.8(a)
hereof and (ii) the amount of  Partnership  Cash Merger  Consideration  to which
holders of Grove LP Units shall be entitled at the Partnership  Merger Effective
Time pursuant to Section 1.7(a) hereof (the "Total Cash Consideration").

              (e)  INVESTMENT  OF  TOTAL  CASH  CONSIDERATION.  The  Total  Cash
Consideration  shall be  invested  by the  Paying  Agent,  as  directed  by ERP,
provided such investments  shall be limited to direct  obligations of the United
States of America, obligations for which the full faith and credit of the United
States of  America  is pledged to  provide  for the  payment  of  principal  and
interest,  commercial  paper rated of the highest  quality by Moody's  Investors
Service,  Inc. and Standard & Poor's  Corporation,  or  certificates  of deposit
issued by a commercial bank having at least $10,000,000,000 in assets; provided,
however, that the Total Cash Consideration shall be readily available to satisfy
all obligations to pay the Company Merger Consideration and the Partnership Cash
Merger Consideration in accordance with the terms of this Agreement.

              (f)  TERMINATION OF DUTIES.  Promptly  following the date which is
one (1) year after the Company Merger  Effective Time, ERP will cause the Paying
Agent  to  deliver  to the  Surviving  Company  all cash  and  documents  in its
possession relating to the funds deposited on the Deposit Date described in this
Agreement,  and the Paying  Agent's  duties  relating  thereto shall  terminate.
Thereafter,  each  holder of a  Certificate  formerly  representing  a Share may
surrender such Certificate to ERP and (subject to applicable abandoned property,
escheat  and  similar  laws)  receive in exchange  therefor  the Company  Merger
Consideration, as calculated in accordance with this Section 1.9.

              (g) NO LIABILITY.  None of ERP,  Grove or Grove OP shall be liable
to any holder of Shares or Grove LP Units for any Company  Merger  Consideration
or Partnership Merger  Consideration  delivered to a public official pursuant to
any applicable abandoned property, escheat or similar law.

              (h) WITHHOLDING  RIGHTS. ERP or the Paying Agent shall be entitled
to deduct and withhold  from the Company  Merger  Consideration  or  Partnership
Merger  Consideration  otherwise  payable pursuant to or in connection with this
Agreement,  or any other  payment or debt  cancellation  made  pursuant  to this
Agreement, to any holder of Shares or Grove LP Units, such amounts as ERP or the
Paying  Agent is required to deduct and  withhold  with respect to the making of
such payment  under the Internal  Revenue Code of 1986, as amended (the "Code"),
or any provision of state,  local or foreign tax law. To the extent that amounts
are so withheld  by ERP or the Paying  Agent,  such  withheld  amounts  shall be
treated for all purposes of this Agreement as having been paid to the holder


                                       5
<PAGE>




of the  Shares or Grove LP Units,  as the case may be, in  respect of which such
deduction and withholding was made by ERP or the Paying Agent.

         1.10 TRANSFER  BOOKS.  At the Company Merger  Effective Time, the stock
transfer  books of  Grove  shall  be  closed,  and  there  shall  be no  further
registration of transfers of Shares thereafter on the records of Grove.

         1.11  NO FURTHER OWNERSHIP RIGHTS IN SHARES.

              (a) The Company Merger Consideration  delivered upon the surrender
for  exchange of Shares in  accordance  with the terms hereof shall be deemed to
have been issued in full  satisfaction of all rights  pertaining to such Shares,
and there shall be no further  registration  of  transfers on the records of the
Surviving  Company of Shares  which were  outstanding  immediately  prior to the
Company Merger  Effective  Time. If, after the Company  Merger  Effective  Time,
Certificates are presented to the Surviving  Company for any reason,  they shall
be canceled and exchanged as provided in this Article 1.

              (b)  The  Partnership  Merger  Consideration  delivered  upon  the
conversion of Grove LP Units in accordance with the terms hereof shall be deemed
to have been issued in full  satisfaction of all rights pertaining to such Grove
LP Units and there shall be no further  registration of transfers on the records
of  the  Surviving   Partnership  of  Grove  LP  Units  which  were  outstanding
immediately prior to the Partnership Merger Effective Time.

         1.12 ADJUSTMENT TO MERGER CONSIDERATION. Notwithstanding Section 1.7 or
Section 1.8, the Partnership Cash Merger Consideration,  Partnership Unit Merger
Consideration and Company Merger  Consideration shall be subject to reduction as
a result of any Closing Agreement Costs (as defined in Section 6.2) as follows:

              (a) The  Partnership  Cash  Merger  Consideration  and the Company
Merger  Consideration  shall each be reduced by an amount  equal to the  Closing
Agreement  Costs,  if any, up to an  aggregate of $3.5  million,  divided by the
aggregate  number of Grove LP Units and Grove Shares  cancelled and converted in
the Mergers in exchange  for the  Partnership  Merger  Consideration  or Company
Merger  Consideration,  as the case may be (the "Reduction  Amount");  provided,
however,  that the Partnership Cash Merger  Consideration and the Company Merger
Consideration, when adjusted pursuant to this Section 1.12(a), shall be adjusted
to the nearest full cent,  with any fractional cent equal to .5 being rounded to
the next highest full cent.

              (b) If the Partnership Cash Merger Consideration shall be adjusted
pursuant to Section 1.12(a),  the Partnership Unit Merger Consideration shall be
equal that number of ERP Units  determined by dividing (i) the Partnership  Cash
Merger Consideration, as adjusted pursuant to (a) above, by (ii) $46.00.

                                   ARTICLE 2
                                   ---------

              REPRESENTATIONS AND WARRANTIES OF GROVE AND GROVE OP
              ----------------------------------------------------

         Except as set forth in the letter of even date  herewith  signed by the
Chief  Financial  Officer of Grove in his capacity as such and  delivered to ERP
prior to the execution hereof (the "Grove Disclosure  Letter"),  Grove and Grove
OP represent and warrant to ERP as follows:

         2.1  ORGANIZATION,  STANDING AND POWER OF GROVE AND GROVE OP. (a) Grove
is a real estate  investment trust duly organized and validly existing under the
laws of Maryland and has the requisite trust power and authority to carry on its
business  as now being  conducted.  Grove is duly  qualified  or  licensed to do
business  as a foreign  trust and is in good  standing in each  jurisdiction  in
which the nature of its business or the  ownership or leasing of its  properties
makes  such   qualification   or  licensing   necessary,   other  than  in  such
jurisdictions where the failure to be so qualified or licensed,  individually or
in the  aggregate,  would not have a material  adverse  effect on the  business,
properties,  assets,  financial  condition or results of operations of Grove and
the Grove  Subsidiaries  (as defined below) taken as a whole (a "Grove  Material
Adverse  Effect").  Schedule 2.1 to the Grove Disclosure  Letter sets forth each
jurisdiction in which Grove is qualified or licensed to do business,  as well as
all assumed names under which




                                       6
<PAGE>




Grove conducts business in such jurisdictions. Grove has previously delivered to
ERP complete and correct copies of its Third Amended and Restated Declaration of
Trust  (the  "Grove  Declaration")  and  Bylaws  and the  Agreement  of  Limited
Partnership of Grove OP (the "Grove OP Agreement"),  in each case, as amended or
supplemented to the date of this Agreement.

              (b)  Grove  OP  is a  limited  partnership  duly  formed,  validly
existing and in good standing  under the laws of the State of Delaware,  and has
the  requisite  partnership  power and authority to carry on its business as now
being  conducted.  Grove OP is duly  qualified  or  licensed to do business as a
foreign  limited  partnership  and is in good standing in each  jurisdiction  in
which the nature of its business or the  ownership or leasing of its  properties
makes  such   qualification   or  licensing   necessary,   other  than  in  such
jurisdictions where the failure to be so qualified or licensed,  individually or
in the aggregate,  would not have a Grove Material Adverse Effect.  Schedule 2.1
to the Grove Disclosure Letter sets forth each jurisdiction in which Grove OP is
qualified or licensed to do business,  as well as all assumed  names under which
Grove OP conducts business in such jurisdictions.

         2.2 GROVE  SUBSIDIARIES.  Except  as  otherwise  provided  in the Grove
Disclosure Letter:

              (a) Schedule 2.2 to the Grove Disclosure Letter sets forth:

              (i) each Subsidiary of Grove;

              (ii) the legal form of each Grove Subsidiary,  including the state
or country of formation;

              (iii) the  identity and  ownership  interest of each owner of such
Grove Subsidiary,  including but not limited to the amount,  class or series and
terms of securities of such Grove Subsidiary owned by such owner;

              (iv) each apartment  community and/or other real estate properties
owned or under contract to be purchased by each Grove Subsidiary, and separately
setting forth each apartment community currently under development, if any;

              (v) each  jurisdiction in which each Grove Subsidiary is qualified
or licensed to do business; and

              (vi) each assumed name under which each Grove Subsidiary  conducts
business in any jurisdiction.

As used in this  Agreement,  "Subsidiary"  of any Person means any  corporation,
partnership,  limited liability company,  joint venture or other legal entity of
which  such  Person  (either  directly  or  through  or  together  with  another
Subsidiary  of such  Person)  owns any of the  capital  stock  or  other  equity
interests of such corporation,  partnership,  limited liability  company,  joint
venture or other legal entity.  As used herein,  "Person"  means an  individual,
corporation, partnership, limited liability company, joint venture, association,
trust,  unincorporated  organization or any other legal entity. Without limiting
the foregoing, for all purposes of this Agreement,  Grove OP shall be considered
a Subsidiary of Grove.

              (b) All the  outstanding  shares of  capital  stock of each  Grove
Subsidiary that is a corporation have been validly issued and are (A) fully paid
and  nonassessable,  (B) owned by Grove or by another Grove Subsidiary,  and (C)
owned free and clear of all pledges,  claims, liens,  charges,  encumbrances and
security interests of any kind or nature whatsoever (collectively, "Liens"), and
all equity  interests  in each Grove  Subsidiary  that is a  partnership,  joint
venture, limited liability company or trust which are owned by Grove, by another
Grove  Subsidiary  or by Grove and another Grove  Subsidiary  are owned free and
clear  of all  Liens.  Each  Grove  Subsidiary  that  is a  corporation  is duly
incorporated  and  validly  existing  under  the  laws  of its  jurisdiction  of
incorporation  and has the requisite  corporate  power and authority to carry on
its  business  as now  being  conducted,  and each  Grove  Subsidiary  that is a
partnership,  limited  liability  company or trust is duly organized and validly
existing  under  the  laws  of its  jurisdiction  of  organization  and  has the
requisite power and authority to carry on its business as now


                                       7
<PAGE>


being  conducted.  Each Grove  Subsidiary  is duly  qualified  or licensed to do
business and, with respect to each Grove Subsidiary that is a corporation, is in
good  standing in each  jurisdiction  in which the nature of its business or the
ownership or leasing of its  properties  makes such  qualification  or licensing
necessary, other than in such jurisdictions where the failure to be so qualified
or licensed,  individually or in the aggregate,  would not have a Grove Material
Adverse  Effect.  True and  correct  copies of the  articles or  certificate  of
incorporation,  articles of organization,  bylaws, partnership agreements, joint
venture and  operating  agreements or similar  organizational  documents of each
Grove Subsidiary, as amended to the date of this Agreement, have been previously
delivered to ERP.

              (c) Grove Corporation, a Delaware corporation ("Grove Corp."), (i)
has no material  assets or liabilities,  (ii) carries on no material  operations
and  (iii)  is,  and has been  since  its  formation,  wholly  owned by  certain
executive  officers of Grove.  Schedule 2.2 to the Grove Disclosure  Letter sets
forth  each  Affiliate  (as  defined  herein)  of Grove or any Grove  Subsidiary
(excluding  individuals,  Grove Corporation and Grove  Subsidiaries),  the legal
form and ownership structure of such Affiliate.  As used in this Agreement,  the
term "Affiliate" shall have the same meaning as such term is defined in Rule 405
promulgated under the Securities Act of 1933, as amended (the "Securities Act").

              (d) The  process by which Grove  merged,  converted  or  otherwise
restructured certain Grove Subsidiaries in October 1999 and December 1999 which,
prior to such dates,  were not  wholly-owned  (directly or indirectly) by Grove,
into  single  member  limited  liability  companies  wholly-owned  (directly  or
indirectly) by Grove or Grove OP (the "Consolidation") conformed in all respects
with all applicable laws and  regulations.  Prior to the date hereof,  Grove has
delivered  to ERP true and correct  copies of all  documents  pertaining  to the
Consolidation.

              (e) Schedule 2.2 to the Grove Disclosure  Letter sets forth all of
the assets and liabilities as of June 30, 2000 of the Grove Subsidiaries subject
to the Retail Sale Agreement (as defined below).

         2.3 CAPITAL STRUCTURE.

              (a) As of the date hereof,  the  authorized  shares of  beneficial
interest  of Grove  consist of (i)  34,000,000  Grove  Common  Shares,  of which
8,301,604 were issued and outstanding  (including any Grove Common Shares issued
pursuant to Restricted  Share Grants (as defined  below) but excluding any Grove
Common Shares owned by Grove OP); and (ii) 1,000,000 Preferred Shares, $0.01 par
value per share (the "Grove Preferred Shares",  and, collectively with the Grove
Common Shares, the "Grove Shares"), none of which was issued or outstanding.  As
of the date hereof,  (i) 111,032  Grove Common Shares were reserved for issuance
but not issued  under  Grove's 1994 Share  Option Plan (the "1994  Plan");  (ii)
1,308,860  Grove Common  Shares were  reserved for issuance but not issued under
Grove's 1996 Share  Incentive Plan (the "1996 Plan");  and (iii) 3,896,910 Grove
Common  shares have been  reserved  for  issuance  upon the exchange of Grove LP
Units.  On the date hereof,  except as set forth in this Section 2.3 or Schedule
2.3 of the Grove Disclosure  Letter,  no Grove Shares or other voting securities
of Grove were issued, reserved for issuance or outstanding.

              (b) Set forth in Schedule 2.3 of the Grove Disclosure  Letter is a
true and complete  list as of the date hereof of the  following:  (i) each Grove
Option granted and outstanding under the 1994 Plan, 1996 Plan or otherwise and a
total  thereof;  and (ii)  each  grant of Grove  Shares  to  employees  or trust
managers  of Grove  which are  subject to any risk of  forfeiture,  and the plan
pursuant to which such grants were made, if any, ("Restricted Share Grants") and
a total  thereof.  The  Restricted  Share  Grants are  included in the number of
outstanding Grove Shares set forth in Section 2.3(a). Grove has no obligation to
issue any  Grove  Shares as a result  of the  transactions  contemplated  hereby
("Change in Control Share Grants").  For each Grove Option held by the executive
officers of Grove,  Schedule 2.3 of the Grove Disclosure Letter sets forth as of
the date hereof, the name of the grantee,  the date of the grant,  status of the
option as qualified or nonqualified under Section 422 of the Code, the number of
Grove  Shares  subject to such option,  the number of shares  subject to options
that are  currently  exercisable,  the exercise  price per share,  those options
granting  reload  options,  and the  number  of such  shares  subject  to  share
appreciation  rights. For each Grove Option held by employees of Grove or any of
the Grove Subsidiaries who are not executive officers of Grove,  Schedule 2.3 to
the Grove  Disclosure  Letter  sets forth as of the date  hereof the name of the
grantee,  the date of the  grant,  the  number of Grove  Shares  subject to such
option, the exercise price per share and the


                                       8
<PAGE>


vesting  schedule.  For each Restricted  Share Grant,  Schedule 2.3 of the Grove
Disclosure Letter sets forth as of the date hereof the name of the grantee,  the
date of the grant, the number of Grove Shares granted and the vesting  schedule.
On the date of this Agreement, except as set forth in Section 2.3(a) or Schedule
2.3 of the Grove Disclosure  Letter,  no Grove Shares or other voting securities
of Grove were issued, reserved for issuance, or outstanding.

              (c) All  outstanding  Grove  Shares are duly  authorized,  validly
issued, fully paid and nonassessable and not subject to preemptive rights. There
are no bonds, debentures, notes or other indebtedness of Grove, or assets of any
other entities,  exchangeable  into Grove Shares having the right to vote on any
matters on which shareholders of Grove may vote.

              (d)  As of the  date  hereof,  12,198,514  Partnership  Units  (as
defined in the Grove OP  Agreement)  of Grove OP ("Grove OP Units") are duly and
validly  issued,  of which 8,301,604 are held by Grove and 3,896,910 are held by
Limited Partners.  Schedule 2.3(d) to the Grove Disclosure Letter sets forth the
name of each Limited Partner and the number of Grove LP Units owned by each such
Limited  Partner  in each  case as of the date of this  Agreement.  The Grove OP
Units  are  subject  to no  restrictions  except  as set  forth in the  Grove OP
Agreement or in Schedule 2.3 to the Grove Disclosure Letter.  Except as provided
in the Grove OP  Agreement or in Schedule  2.3 to the Grove  Disclosure  Letter,
Grove OP has not issued or granted or is a party to any outstanding  commitments
of any kind relating to, or any presently effective agreements or understandings
with respect to, the issuance or sale of interests in Grove OP,  whether  issued
or unissued,  or securities  convertible or exchangeable into interests in Grove
OP or Grove, except as contemplated by this Agreement.

              (e) Except as set forth in this  Section 2.3 or in Schedule 2.3 of
the  Grove  Disclosure  Letter,  as of the date of this  Agreement  there are no
outstanding  securities,   options,   warrants,   calls,  rights,   commitments,
agreements, arrangements or undertakings of any kind to which Grove or any Grove
Subsidiary is a party or by which such entity is bound,  obligating Grove or any
Grove Subsidiary to issue, deliver or sell, or cause to be issued,  delivered or
sold,  additional shares of capital stock,  voting securities or other ownership
interests  of Grove or any Grove  Subsidiary  or  obligating  Grove or any Grove
Subsidiary  to issue,  grant,  extend or enter into any such  security,  option,
warrant, call, right, commitment, agreement, arrangement or undertaking.

              (f) Except as set forth in  Schedule  2.3 of the Grove  Disclosure
Letter,  all dividends or distributions on Grove Shares and Grove LP Units which
have been  authorized or declared  prior to the date of this Agreement have been
paid in full.

         2.4  OTHER  INTERESTS  AND SALE  OBLIGATIONS.  Except  as set  forth in
Schedule 2.2 or 2.4 of the Grove Disclosure Letter,  neither Grove nor any Grove
Subsidiary  owns  directly or  indirectly  any interest or  investment  (whether
equity or debt) in any  corporation,  partnership,  limited  liability  company,
joint venture,  business  trust or entity (other than  investments in short-term
investment  securities)  or has any  right or  obligation  (whether  current  or
contingent) to acquire such an interest. With respect to such interests,  except
as set forth in Schedule 2.2 or 2.4 to the Grove  Disclosure  Letter,  Grove and
each such Grove  Subsidiary  owns such interests  which are owned by it free and
clear of all  liens,  pledges,  security  interests,  claims,  options  or other
encumbrances.  Neither Grove nor any of the Grove  Subsidiaries  is in breach in
any material  respect of any  provision of any  agreement,  document or contract
governing  its rights in or to the  interests  owned or held by it, all of which
agreements,  documents and  contracts are (a) set forth on the Grove  Disclosure
Letter,  (b)  unmodified  except as described  therein and (c) in full force and
effect.  To the  Knowledge  of Grove (as  defined  in Section  2.26),  the other
parties to such  agreements,  documents  or  contracts  are not in any  material
breach of any of their respective  obligations under such agreements,  documents
or contracts.

         2.5  AUTHORITY; NONCONTRAVENTION; CONSENTS.

              (a) Grove and Grove OP each have the requisite power and authority
to  enter  into  this  Agreement  and,  subject  (i)  in  Grove's  case,  to the
affirmative  vote of holders of at least  two-thirds  of the  outstanding  Grove
Common Shares entitled to vote thereon to approve the Company Merger (the "Grove
Shareholder  Approvals") and (ii) in Grove OP's case, to the affirmative vote of
holders of at least two-thirds of the outstanding


                                       9
<PAGE>




Grove OP Units, including the Grove OP Units beneficially owned by Grove and the
Grove Subsidiaries,  to approve this Agreement and the transactions contemplated
hereby (the "Grove Partner  Approvals" and,  together with the Grove Shareholder
Approvals, the "Grove Approvals"),  to consummate the transactions  contemplated
by this  Agreement  to which  Grove or Grove OP is a party.  The  execution  and
delivery of this Agreement by Grove and Grove OP and the  consummation  by Grove
and Grove OP of the  transactions  contemplated by this Agreement have been duly
authorized by all necessary action on the part of Grove or any Grove Subsidiary,
subject  to the Grove  Approvals.  This  Agreement  has been duly  executed  and
delivered by Grove and Grove OP and  constitutes a valid and binding  obligation
of Grove and Grove OP, enforceable against Grove and Grove OP in accordance with
its terms,  subject to applicable  bankruptcy,  insolvency,  moratorium or other
similar laws relating to creditors' rights and general principles of equity.

              (b) Except as set forth in  Schedule  2.5 to the Grove  Disclosure
Letter,  the execution  and delivery of this  Agreement by Grove and Grove OP do
not,  and,  except as set forth in Schedule  2.5 or  Schedule  2.30 to the Grove
Disclosure  Letter,  the consummation of the  transactions  contemplated by this
Agreement  by Grove and Grove OP and  compliance  by Grove and Grove OP with the
provisions of this Agreement will not, conflict with, or result in any violation
of, or default (with or without notice or lapse of time, or both) under, or give
rise to a right of termination,  cancellation, forfeiture, obligation to sell or
convey  (with  or  without  a  right  to  receive  consideration   therefor)  or
acceleration of any material obligation or the loss of a material benefit under,
or result in the  creation of any Lien upon any of the  properties  or assets of
Grove or any Grove Subsidiary  under, (i) the Declaration of Trust or the Bylaws
of Grove or the comparable charter or organizational documents or partnership or
similar agreement (as the case may be) of any Grove Subsidiary,  in each case as
amended or supplemented  to the date of this Agreement,  (ii) any loan or credit
agreement,  note, bond,  mortgage,  indenture,  reciprocal  easement  agreement,
employment  or  consulting  agreement,  lease  or other  agreement,  instrument,
permit, concession,  franchise or license to which Grove or any Grove Subsidiary
is a party or their  respective  properties or assets are bound or (iii) subject
to the  governmental  filings and other  matters  referred  to in the  following
sentence,  any  judgment,  order,  decree,  statute,  law,  ordinance,  rule  or
regulation  (collectively,  "Laws") applicable to Grove or any Grove Subsidiary,
or their respective properties or assets, other than, in the case of clause (ii)
or (iii), any such conflicts,  violations,  defaults, rights, loss or Liens that
individually  or in the aggregate would not (x) result in fees or other payments
in excess of $250,000 or the conveyance or forfeiture of any asset  (tangible or
intangible)  or right  having a book value in excess of  $250,000 or (y) prevent
the consummation of the transactions  contemplated by this Agreement.  Except as
set forth on Schedule 2.5 to the Grove Disclosure Letter, no consent,  approval,
order or  authorization  of, or  registration,  declaration  or filing with, any
federal,  state or local government or any court,  administrative  or regulatory
agency or  commission  or other  governmental  authority or agency,  domestic or
foreign (a  "Governmental  Entity"),  is required by or with respect to Grove or
any Grove  Subsidiary  in  connection  with the  execution  and delivery of this
Agreement by Grove or the consummation by Grove of the transactions contemplated
by this  Agreement,  except for (i) the filing with the  Securities and Exchange
Commission  (the  "SEC")  of  (x)  a  proxy  statement  relating  to  the  Grove
Shareholder  Approvals (as amended or supplemented from time to time, the "Proxy
Statement") and (y) such reports under Section 13(a) of the Securities  Exchange
Act of 1934, as amended (the "Exchange  Act"),  as may be required in connection
with this Agreement and the  transactions  contemplated by this Agreement,  (ii)
the  acceptance  for record of the Company  Articles  of Merger by the  Maryland
Department,  (iii) the acceptance for record of the  Partnership  Certificate of
Merger by the  Delaware  Secretary  and (iv)  such  other  consents,  approvals,
orders,  authorizations,  registrations,  declarations  and filings,  including,
without   limitation,   any   consents,   approvals,   orders,   authorizations,
registrations, declarations and filings required by the United States Department
of Housing and Urban  Development  ("HUD"),  the  Massachusetts  Housing Finance
Authority ("MHFA") or similar agencies,  (A) as are set forth in Schedule 2.5 to
the Grove  Disclosure  Letter,  (B) as may be required under  federal,  state or
local  environmental  laws,  or (C) which,  if not  obtained or made,  would not
prevent  or  delay  in  any  material  respect  the  consummation  of any of the
transactions  contemplated  by this Agreement or otherwise  prevent Grove or any
Grove  Subsidiary from  performing its  obligations  under this Agreement in any
material  respect or have,  individually  or in the aggregate,  a Grove Material
Adverse Effect.

              (c)   For   purposes   of   determining    compliance   with   the
Hart-Scott-Rodino   Antitrust   Improvements   Act  of  1976,  as  amended  (the
"Hart-Scott  Act"),  Grove  confirms  that the conduct of its business  does not
require a filing under the Hart-Scott Act in connection with the Mergers.


                                       10
<PAGE>




         2.6  SEC DOCUMENTS; FINANCIAL STATEMENTS; UNDISCLOSED LIABILITIES.

              (a) Except as indicated  on Schedule  2.6 to the Grove  Disclosure
Letter, Grove has filed all required reports,  schedules,  forms, statements and
other  documents with the SEC since January 1, 1995 through the date hereof (the
"Grove SEC Documents") on a timely basis.  Schedule 2.6 of the Grove  Disclosure
Letter  contains a complete list  (without  exhibits) of all Grove SEC Documents
filed by Grove with the SEC since January 1, 1995 and on or prior to the date of
this  Agreement.  All  of  the  Grove  SEC  Documents  (other  than  preliminary
material),  as of their  respective  filing dates, or as of the date of the last
amendment  thereof (if amended after filing),  complied in all material respects
with all applicable  requirements  of the  Securities  Act, and the Exchange Act
and, in each case, the rules and regulations  promulgated  thereunder applicable
to such  Grove SEC  Documents.  None of the Grove SEC  Documents  at the time of
filing contained any untrue statement of a material fact or omitted to state any
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,  except to the extent  such  statements  have been  modified or
superseded by later Grove SEC Documents filed on a non-confidential  basis prior
to the date of this Agreement.  The consolidated  financial  statements of Grove
included in the Grove SEC Documents complied as to form in all material respects
with applicable accounting  requirements and the published rules and regulations
of the  SEC  with  respect  thereto,  have  been  prepared  in  accordance  with
accounting  principles generally accepted in the United States ("GAAP") (except,
in the case of unaudited  statements,  as permitted by the applicable  rules and
regulations  of the SEC)  applied  on a  consistent  basis  during  the  periods
involved (except as may be indicated therein or in the notes thereto) and fairly
presented,  in  accordance  with  the  applicable  requirements  of GAAP and the
applicable  rules and  regulations  of the SEC, in all  material  respects,  the
consolidated   financial   position   of  Grove  and  the   consolidated   Grove
Subsidiaries,  taken as a whole,  as of the dates  thereof and the  consolidated
results of operations and cash flows for the periods then ended (subject, in the
case of unaudited  statements,  to normal year-end audit adjustments,  any other
adjustments  described  therein and the fact that certain  information and notes
have been condensed or omitted in accordance  with the Exchange  Act).  Schedule
2.6 of the Grove Disclosure Letter sets forth all Grove  Subsidiaries  which are
not  consolidated  for  accounting  purposes as of the date  hereof.  Except for
liabilities  and obligations set forth in the Grove SEC Documents or in Schedule
2.6  to the  Grove  Disclosure  Letter,  neither  Grove  nor  any  of the  Grove
Subsidiaries has any liabilities or obligations of any nature (whether  accrued,
absolute,  contingent  or  otherwise)  required  by  GAAP to be set  forth  on a
consolidated  balance  sheet  of  Grove  or in  the  notes  thereto  and  which,
individually  or in the aggregate,  would have a Grove Material  Adverse Effect,
after taking into account any assets acquired or services provided in connection
with the incurrence of such liabilities or obligations.

              (b) Grove has at all times been in  material  compliance  with the
rules and regulations of the American Stock Exchange ("AMEX").

              (c) At no time has Grove OP or any  other  Grove  Subsidiary  been
subject to the  reporting  requirements  of Sections 13 or 15(d) of the Exchange
Act.

         2.7 ABSENCE OF CERTAIN  CHANGES OR EVENTS.  Except as  disclosed in the
Grove SEC Documents or Schedule 2.7 to the Grove  Disclosure  Letter,  since the
date of the most recent audited financial  statements  included in the Grove SEC
Documents  (the  "Grove   Financial   Statement   Date")  Grove  and  the  Grove
Subsidiaries  have conducted  their business only in the ordinary course (taking
into account prior  practices,  including  the  acquisition  of  properties  and
issuance of securities)  and there has not been (a) any material  adverse change
in the business,  financial  condition or results of operations of Grove and the
Grove Subsidiaries taken as a whole (a "Grove Material Adverse Change"), nor has
there been any  occurrence or  circumstance  that with the passage of time would
reasonably be expected to result in a Grove Material Adverse Change,  (b) except
(i) prior to the date hereof,  regular quarterly  dividends or distributions (in
the case of Grove and Grove  OP) not in excess of $0.18 per Grove  Common  Share
and Grove OP Unit with customary record and payment dates and (ii) subsequent to
the date hereof, in accordance with Section 5.9, any declaration,  setting aside
or payment of any  dividend or other  distribution  (whether  in cash,  stock or
property)  with respect to any Grove  Shares and Grove OP Units,  (c) any split,
combination  or  reclassification  of any Grove  Shares or any  issuance  or the
authorization  of any issuance of any other securities in respect of, in lieu of
or in substitution  for, or giving the right to acquire by exchange or exercise,
shares of its beneficial  interest or any issuance of an ownership  interest in,
any Grove Subsidiary  except as contemplated by this Agreement,  (d) any damage,
destruction or loss, whether or not covered by insurance, that has or would have
a


                                       11
<PAGE>


Grove  Material  Adverse  Effect,  (e) any change made prior to the date of this
Agreement in accounting  methods,  principles or practices by Grove or any Grove
Subsidiary  materially  affecting its assets,  liabilities  or business,  except
insofar as may have been  disclosed  in Grove SEC  Documents  or  required  by a
change in GAAP or (f) any amendment of any  employment,  consulting,  severance,
retention or any other agreement  between Grove and any officer or trust manager
of Grove.

              2.8  LITIGATION.  Except as disclosed in the Grove SEC  Documents,
Schedule  2.8 or Schedule  2.9 to the Grove  Disclosure  Letter,  and other than
personal  injury and other  routine  tort  litigation  arising from the ordinary
course of operations of Grove and the Grove  Subsidiaries  (a) which are covered
by  adequate  insurance  or (b) for which  all  material  costs and  liabilities
arising  therefrom  are  reimbursable  pursuant  to common area  maintenance  or
similar  agreements,  there is no suit, action or proceeding  pending or, to the
Knowledge  of  Grove,  threatened  against  or  affecting  Grove  or  any  Grove
Subsidiary that, individually or in the aggregate,  could reasonably be expected
to have a Grove  Material  Adverse  Effect,  nor is there any judgment,  decree,
injunction,  rule or order of any Governmental Entity or arbitrator  outstanding
against  Grove or any Grove  Subsidiary  having,  or which could  reasonably  be
expected to have, any such effect.  Notwithstanding the foregoing,  (y) Schedule
2.8 to the Grove  Disclosure  Letter sets forth each and every claim involving a
potential  dollar  cost to Grove in excess of $50,000  and each and every  equal
employment  opportunity  claim and claim  relating to sexual  harassment  and/or
discrimination pending or, to the Knowledge of Grove,  threatened as of the date
hereof,  in each case with a brief summary of such claim or threatened claim and
(z) no claim is  pending  or has been  made  since  January  1,  1995  under any
trustees',  directors' or officers' liability insurance policy maintained at any
time by Grove or any of the  Grove  Subsidiaries.  There is no suit,  action  or
proceeding pending, or to the Knowledge of Grove,  threatened,  against Grove or
any Grove Subsidiary which challenges,  states a cause of action grounded in, or
seeks damages in respect of, the transactions contemplated by this Agreement.

         2.9  PROPERTIES.

              (a) Schedule 2.9 to the Grove  Disclosure  Letter  identifies  all
real property owned or leased by Grove and the Grove  Subsidiaries and the Grove
Subsidiary or  Subsidiaries  which owns or leases such real property (the "Grove
Properties"). Except as provided in Schedule 2.9 of the Grove Disclosure Letter,
Grove or the Grove  Subsidiary set forth on Schedule 2.2 of the Grove Disclosure
Letter owns fee simple  title to their  respective  Grove  Properties.  All such
properties are owned in each case free and clear of liens, mortgages or deeds of
trust,  claims against  title,  charges which are liens,  security  interests or
other  encumbrances  on title  securing  monetary  obligations  ("Encumbrances")
(except as provided below).  Except as set forth in Schedule 2.2,  Schedule 2.18
or  Schedule  2.9 of the  Grove  Disclosure  Letter,  no  other  Person  has any
ownership  interest  in any of the  Grove  Properties,  and any  such  ownership
interest  so  scheduled  does not  materially  detract  from the  value  of,  or
materially  interfere  with the  present  use of,  any of the  Grove  Properties
subject thereto or affected thereby. The Grove Properties are not subject to any
rights of way, written agreements,  laws,  ordinances and regulations  affecting
building  use  or   occupancy,   or   reservations   of  an  interest  in  title
(collectively,  "Property  Restrictions") or other Encumbrances,  except for (i)
Encumbrances and Property Restrictions set forth in the Grove Disclosure Letter,
(ii) Property  Restrictions  imposed or promulgated  by law or any  governmental
body or authority with respect to real property,  including zoning  regulations,
provided they do not  materially  adversely  affect the current use of any Grove
Property,  (iii)  Encumbrances and Property  Restrictions  disclosed on existing
title reports or existing  surveys (in either case copies of which title reports
and surveys have been  delivered or made available to ERP),  which  Encumbrances
and Property  Restrictions  disclosed  in Schedule  2.9 to the Grove  Disclosure
Schedule or contained in the previously  delivered title reports,  in any event,
do not materially interfere with the present use of, any of the Grove Properties
subject thereto or affected thereby (provided that Grove specifically represents
and warrants that any  Encumbrances  identified on any existing  title report as
securing any  Indebtedness,  other than the Indebtedness  identified on Schedule
2.18 of the Grove Disclosure  Letter, has been released of record since the date
of the title report in question),  (iv) real estate taxes and assessments  which
constitute a Lien but are not yet due and payable and (v) mechanics', carriers',
workmen's,  repairmen's  liens,  other  Encumbrances  and Property  Restrictions
(other than Encumbrances and Property Restrictions contained in any agreement of
the type  described in Section 2.9(j) and disclosed on Schedule 2.9 to the Grove
Disclosure  Letter),  if any, which,  individually  or in the aggregate,  do not
materially  detract from the value of or materially  interfere  with the present
use of any of the Grove Properties  subject thereto or affected thereby,  and do
not otherwise materially impair business operations conducted by Grove


                                       12
<PAGE>


and the Grove  Subsidiaries,  taken as a whole.  Except as disclosed in Schedule
2.9 of the Grove Disclosure Letter, no portion of any of the Grove Properties is
located in a flood zone area for which  flood  insurance  is  available  under a
federally sponsored insurance program except for that which,  individually or in
the  aggregate,  do not  materially  detract  from the  value  of or  materially
interfere  with the  present  use of such  Grove  Property  subject  thereto  or
affected thereby. Schedule 2.9 lists each of the Grove Properties which is under
development as of the date of this Agreement.

              (b) Except as  provided in  Schedule  2.9 to the Grove  Disclosure
Letter,  valid  policies  of  title  insurance  (each a "Grove  Title  Insurance
Policy") have been issued insuring Grove's or the applicable Grove  Subsidiary's
fee simple title to the Grove Properties,  subject only to the matters disclosed
above and on the Grove  Disclosure  Letter,  and such  policies are, at the date
hereof,  in full force and effect  and no claim has been made  against  any such
policy.  A true and correct copy of each Grove Title  Insurance  Policy has been
previously delivered to ERP.

              (c) Except as  provided in  Schedule  2.9 to the Grove  Disclosure
Letter or in Grove's capital budget attached to the Grove Disclosure Letter (the
"Grove  Capital  Budget"),  Grove has no Knowledge  (i) that,  any  certificate,
permit or license from any governmental  authority having  jurisdiction over any
of the Grove  Properties  or any  agreement,  easement  or other  right which is
necessary  to  permit  the  lawful  use  and  operation  of  the  buildings  and
improvements on any of the Grove  Properties or which is necessary to permit the
lawful  current use and  operation  of all  driveways,  roads and other means of
egress and ingress to and from any of the Grove Properties has not been obtained
and is not in full force and effect, or of any pending threat of modification or
cancellation  of any of same; (ii) of any written notice of any violation of any
federal,  state or municipal law,  ordinance,  order,  regulation or requirement
materially  and adversely  affecting any of the Grove  Properties  issued by any
governmental authority; (iii) of any material structural defects relating to any
Grove  Property  which  costs more than  $75,000  to  repair;  (iv) of any Grove
Property whose building systems are not in working order in any material respect
and costs more than $75,000 to repair;  (v) of any physical  damage to any Grove
Property in excess of $75,000 for which there is no insurance in effect covering
the  cost  of the  restoration;  (vi) of any  current  renovation  or  uninsured
restoration underway to any Grove Property the cost of which exceeds $75,000; or
(vii) of items referred to in Section 2.9(c)(iii)-(vi) which aggregate for Grove
and the Grove Subsidiaries more than $1,000,000.

              (d) Except as set forth in  Schedule  2.9 to the Grove  Disclosure
Letter, neither Grove nor any of the Grove Subsidiaries has received any written
notice to the effect  that (i) any  condemnation  or  rezoning  proceedings  are
pending or  threatened  with respect to any of the Grove  Properties or (ii) any
zoning, building or similar law, code, ordinance, order or regulation is or will
be  violated  in  any  material  respect  for  any  property  by  the  continued
maintenance,  operation or use of any buildings or other  improvements on any of
the Grove  Properties  in accordance  with current  practice or by the continued
maintenance, operation or use of the parking areas.

              (e) Except as set forth in  Schedule  2.9 to the Grove  Disclosure
Letter, all of the Grove Properties are managed by Grove or a wholly-owned Grove
Subsidiary.

              (f) The rent roll for the Grove  Properties  as of April 30,  2000
has been  previously  delivered  to ERP,  and is  complete  and  correct  in all
material respects as of the date thereof (the "Rent Roll").  The Rent Roll lists
each lease with respect the Grove  Properties,  identifies the leased  premises,
names all tenants, indicates square footage or other indication of space leased,
monthly rental, date to which paid, term of lease, date of occupancy and date of
expiration.

              (g) Except as set forth in  Schedule  2.9 to the Grove  Disclosure
Letter,  all work  required to be  performed,  payments  required to be made and
actions  required to be taken prior to the date hereof pursuant to any agreement
entered into with a  governmental  body or authority in  connection  with a site
approval,  zoning reclassification or other similar action relating to any Grove
Properties  (e.g.,  local  improvement  district,   road  improvement  district,
environmental  mitigation)  have been performed,  paid or taken, as the case may
be,  other than those where,  individually  or in the  aggregate  with any other
condition  or  omission  resulting  in  a  breach  of  the  representations  and
warranties  set forth in this Section  2.9,  the failure  would not have a Grove
Material  Adverse  Effect,  and Grove has no  Knowledge  of any  material  work,
payments or actions that are required after the date


                                       13
<PAGE>


hereof  pursuant  to such  agreements,  except  as set forth in  development  or
operating  budgets for such Grove Properties  delivered to ERP prior to the date
hereof.

              (h)  Grove  and  each of the  Grove  Subsidiaries  have  good  and
sufficient  title to all their  personal  and  non-real  properties  and  assets
reflected  in their books and records as being  owned by them  (including  those
reflected in the  consolidated  balance  sheet of Grove as of December 31, 1999,
except  as  since  sold or  otherwise  disposed  of in the  ordinary  course  of
business),   free  and  clear  of  all  liens  and  encumbrances,   except  such
Encumbrances  reflected on Schedule 2.18 or Schedule 2.9 to the Grove Disclosure
Letter or on the  consolidated  balance  sheet of Grove as of December 31, 1999,
and the notes  thereto,  and except for Liens for current  taxes not yet due and
payable, and Liens or encumbrances which are normal to the business of Grove and
the Grove  Subsidiaries  and are not, in the aggregate,  material in relation to
the  assets  of  Grove  on  a  consolidated  basis  and  except  also  for  such
imperfections of title, easement and encumbrances,  if any, as do not materially
interfere  with the present use of the  properties  subject  thereto or affected
thereby, or otherwise materially impair the consolidated  business operations of
Grove.

              (i) Except as set forth in  Schedule  2.9 to the Grove  Disclosure
Letter,  no Grove  Property is  currently  under  development  or subject to any
agreement  with  respect  to  development,  and  neither  Grove  nor  any  Grove
Subsidiary shall enter into any such agreements  between the date hereof and the
Company Merger Effective Time without the prior written approval of ERP.

              (j)  Schedule 2.9 to the Grove  Disclosure  Letter sets forth each
Grove Property subject to regulation by HUD, MHFA or similar agency,  as well as
any  agreements  entered into between  Grove and any Grove  Subsidiary  and such
agencies  (including,   without  limitation,   any  so-called  121A  excise  tax
agreements).  Those certain closing  binders  delivered to ERP by Grove prior to
the date hereof  contain true and correct copies of all such  agreements.  Grove
and the Grove  Subsidiaries have at times been in compliance with all applicable
rules and regulations of, and agreements with, HUD, MHFA or similar agencies.

         2.10  ENVIRONMENTAL  MATTERS.  Grove has delivered to ERP a true and
complete  copy of the  environmental  reports by  third-party  consulting  firms
listed on Schedule 2.10 of the Grove Disclosure Letter (the "Grove Environmental
Reports"). To Grove's Knowledge,  the Grove Environmental Reports constitute all
final environmental reports (including,  without limitation,  all final versions
of environmental investigations and testing or laboratory analysis made by or on
behalf  of Grove or any of the Grove  Subsidiaries)  with  respect  to the Grove
Properties in the possession of Grove or any Grove  Subsidiary.  With respect to
each  Grove  Property,  except for any  condition  that  individually  or in the
aggregate  would not be  reasonably  expected to have a Grove  Material  Adverse
Effect,  (a) no Hazardous  Substances (as defined below) have been used, stored,
manufactured,  treated,  processed  or  transported  to or from any  such  Grove
Property  except as necessary to the conduct of business and in compliance  with
Environmental  Laws  (as  defined  below);  (b) no  unlawful  spills,  releases,
discharges or disposals of Hazardous  Substances  have occurred or are presently
occurring  on or from such  Grove  Property;  (c) such  Grove  Property  and the
business  conducted thereon are not in violation of Environmental  Laws; and (d)
Grove and the Grove  Subsidiaries have not received and do not reasonably expect
to receive any notice of potential  responsibility,  letter of inquiry or notice
of alleged  liability under any Environmental Law from any Person regarding such
Grove Property or the business conducted thereon,  provided,  however, that with
respect  to  any  Grove  Property  covered  by  an  Environmental   Report,  the
representation  contained in this Section 2.10 covers only that period following
the date of such  Environmental  Report.  For the  purposes of this Section 2.10
only, "Grove Properties" shall be deemed to include all property formerly owned,
operated or leased by Grove or the Grove  Subsidiaries;  solely,  however, as to
the period of time when such property was so owned, operated, or leased by Grove
or the Grove Subsidiaries.

         "Environmental   Laws"  shall  mean  any  applicable   statute,   code,
enactment,    ordinance,   rule,   regulation,    permit,   consent,   approval,
authorization,  judgment,  order,  common law rule (including without limitation
the common law respecting nuisance and tortious liability),  decree, injunction,
or other requirement having the force and effect of law, whether local,  county,
state, territorial or national, at any time in force or effect relating to:


                                       14
<PAGE>


              (l)  emissions,  discharges,   spills,  releases   or   threatened
         releases of  Hazardous  Substances  into ambient  air,  surface  water,
         groundwater, watercourses, publicly or privately owned treatment works,
         drains, sewer systems, wetlands, septic systems or onto land;

              (m)  the    use,    treatment,   storage,    disposal,   handling,
         manufacturing, transportation or shipment of Hazardous Substances;

              (n)  the regulation of storage tanks; or

              (o)  otherwise  relating  to  pollution  or  the  protection   the
         environment.

         "Hazardous Substances" shall mean all substances,  wastes,  pollutants,
contaminants  and  materials  regulated or defined or  designated  as hazardous,
extremely or imminently hazardous,  dangerous,  or toxic pursuant to any law, by
any local, county, state, territorial or federal governmental authority, or with
respect to which such a governmental  authority otherwise requires environmental
investigation, monitoring, reporting, or remediation; including, but not limited
to:

              (a) all substances, wastes, pollutants, contaminants and materials
regulated,  or defined or  designated  as  hazardous,  extremely  or  imminently
hazardous,  dangerous or toxic,  under the following  federal statutes and their
state counterparts,  as well as their statutes'  implementing  regulations:  the
Comprehensive Environmental Response,  Compensation and Liability Act, 42 U.S.C.
section 9601 et. seq.,  the Resource  Conservation  and Recovery  Act, 42 U.S.C.
section 6901 et. seq., the Toxic Substances Control Act, 15 U.S.C.  section 2601
et. seq.,  the Clean Water Act, 33 U.S.C.  section 1251 et. seq.,  the Clean Air
Act, 42 U.S.C. section 7401 et. seq., the Emergency Planning and Community Right
to Know Act, 42 U.S.C.  section 11011 et. seq.,  the Safe Drinking Water Act, 33
U.S.C.  section  300f  et.  seq.,  the  Federal  Insecticide,   Fungicide,   and
Rodenticide  Act, 7 U.S.C.  section 136 et. seq.,  and the  Hazardous  Materials
Transportation Act, 49 U.S.C. section 1501 et. seq.;

              (b) petroleum and petroleum  products  including crude oil and any
fractions thereof;

              (c) natural gas, synthetic gas, and any mixtures thereof; and

              (d) radon,  radioactive  substances,  asbestos, urea formaldehyde,
polychlorinated biphenyls and electromagnetic field radiation.

         2.11   CONSULTANTS AND RELATED PARTY TRANSACTIONS.

              (a) Set forth in Schedule 2.11 to the Grove Disclosure Letter is a
list of all arrangements,  agreements and contracts entered into by Grove or any
of the Grove Subsidiaries under which continuing  obligations exist with (i) any
consultant  (other than a consultant  entitled to receive less than $15,000 from
Grove or any Grove Subsidiary,  provided, however, that if the total amount owed
to  consultants  by  Grove  and  the  Grove  Subsidiaries  under   arrangements,
agreements and contracts not set forth in Schedule 2.11 to the Grove  Disclosure
Letter  exceeds  $100,000,  all such  agreements  shall be set forth in Schedule
2.11), (ii) any person who is an officer,  trust manager,  trustee,  director or
Affiliate  of  Grove  or  any of  the  Grove  Subsidiaries,  any  member  of the
"immediate  family"  (as such  term is  defined  in Item 404 of  Regulation  S-K
promulgated  under the Securities  Act) of any of the foregoing or any entity of
which any of the  foregoing  is an  Affiliate  or (iii) any person who  acquired
Grove  Shares in a private  placement  within  three  years  preceding  the date
hereof,  except those of a type available to Grove employees  generally.  To the
extent in writing,  such documents,  copies of all of which have previously been
delivered or made  available  to ERP,  are listed in Schedule  2.11 to the Grove
Disclosure Letter.

              (b) On or prior  to the date  hereof,  (i) a  special  independent
committee of the Grove Board comprised of all the non-employee trust managers of
Grove (the "Special Committee") has approved that certain agreement by and among
Grove OP, Joseph LaBrosse,  Damon Navarro,  Brian Navarro and Edmund Navarro and
certain  affiliates  thereof  relating to the transfer by Grove OP of its equity
interests in four retail  properties  and related  assets and  liabilities  (the
"Retail Sale Agreement") and the  transactions  contemplated  therein,  (ii) the
Retail


                                       15
<PAGE>


Sale Agreement has been duly  authorized and executed by the parties thereto and
is  enforceable  against the parties  thereto in  accordance  with its terms and
(iii) a copy of the  Retail  Sale  Agreement,  as  executed  and  delivered  and
currently in effect,  has been delivered to ERP. The Special  Committee has been
duly created and  authorized  in  accordance  with Maryland law and has received
such advice,  legal counsel and  information  deemed  appropriate by the Special
Committee to carry out its duties in accordance  with Maryland and Delaware law.
Schedule 2.11 to the Grove  Disclosure  Letter sets forth the  compensation,  if
any,  payable to each Grove  non-employee  trust  manager  for his  service as a
member of the Special Committee.

         2.12  EMPLOYEE  BENEFITS.  As used  herein,  the term  "Employee  Plan"
includes any pension, retirement,  savings, disability, medical, dental, health,
life, death benefit,  group insurance,  profit sharing,  deferred  compensation,
stock option, stock loan, bonus, incentive, vacation pay, tuition reimbursement,
severance  pay, or other  employee  benefit plan,  trust,  agreement,  contract,
arrangement,  policy or commitment (including,  without limitation,  any pension
plan, as defined in Section 3(2) of the Employee  Retirement Income Security Act
of 1974,  as  amended  and the  rules  and  regulations  promulgated  thereunder
("ERISA")  ("Pension Plan"),  and any welfare plan as defined in Section 3(1) of
ERISA  ("Welfare  Plan")),  whether any of the  foregoing is funded,  insured or
self-funded,  written or oral,  (i)  sponsored or  maintained  by Grove or Grove
Subsidiaries  (each a  "Controlled  Group  Member") and covering any  Controlled
Group  Member's  active or former  employees (or their  beneficiaries),  (ii) to
which any Controlled  Group Member is a party or by which any  Controlled  Group
Member (or any of the rights,  properties  or assets  thereof) is bound or (iii)
with respect to which any current Controlled Group Member may otherwise have any
material  liability (whether or not such Controlled Group Member still maintains
such Employee Plan). Each Employee Plan is listed on Schedule 2.12. With respect
to the Employee Plans:

              (a)  Except as disclosed in the Grove SEC Documents or in Schedule
              2.12 to the Grove  Disclosure  Letter,  no Controlled Group Member
              has any continuing liability under any Welfare Plan which provides
              for  continuing  benefits or coverage for any  participant  or any
              beneficiary of a participant after such participant's  termination
              of  employment,  except as may be required by section 4980B of the
              Code or Section  601 (et seq.) of ERISA,  or under any  applicable
              state  law,  and  at  the  expense  of  the   participant  or  the
              beneficiary of the participant.

              (b)  Each Employee Plan complies in all material respects with the
              applicable  requirements  of ERISA  and any other  applicable  law
              governing  such Employee  Plan,  and each Employee Plan has at all
              times been  properly  administered  in all  material  respects  in
              accordance  with all such  requirements  of law, and in accordance
              with  its  terms  and  the  terms  of  any  applicable  collective
              bargaining  agreement  to the  extent  consistent  with  all  such
              requirements  of law.  Each  Pension  Plan which is intended to be
              qualified  is  qualified  under  Section  401(a) of the Code,  has
              received  a  favorable  determination  letter  from  the  Internal
              Revenue  Service  (the  "IRS")  stating  that such Plan  meets the
              requirements  of  Section  401(a)  of the Code and that the  trust
              associated  with such Plan is tax exempt under  Section  501(a) of
              the Code and no event has  occurred  which  would  jeopardize  the
              qualified  status of any such Plan or the tax exempt status of any
              such trust under  Section  401(a) and Section  501(a) of the Code,
              respectively.  No lawsuits,  claims (other than routine claims for
              benefits)  or  complaints  to, or by, any  person or  governmental
              entity  have been  filed or are  pending,  Grove has  received  no
              notice of such a lawsuit, claim or complaint and, to the Knowledge
              of Grove,  there is no fact or  contemplated  event which would be
              expected  to give  rise to any such  lawsuit,  claim  (other  than
              routine  claims for  benefits)  or  complaint  with respect to any
              Employee Plan. Without limiting the foregoing, except as disclosed
              on Schedule 2.12 to the Grove Disclosure Letter, the following are
              true with respect to each Employee Plan:

              (i)  except for those not yet required to be filed or distributed,
all  Controlled  Group  Members have filed or caused to be filed every  material
return, report,  statement,  notice,  declaration and other document required by
any law or governmental  agency,  federal,  state and local (including,  without
limitation,  the IRS and the  Department  of Labor),  with  respect to each such
Employee  Plan,  each of such  filings  has been  complete  and  accurate in all
material  respects  and no  Controlled  Group  Member has  incurred any material
liability in connection with such filings;


                                       16
<PAGE>


              (ii) except for those not yet required to be filed or distributed,
all  Controlled  Group Members have delivered or caused to be delivered to every
participant, beneficiary and other party entitled to such material, all material
plan descriptions,  returns, reports, schedules, notices, statements and similar
materials,  including, without limitation, summary plan descriptions and summary
annual reports,  as are required under Title I of ERISA,  the Code, or both, and
no  Controlled  Group Member has incurred any material  liability in  connection
with such deliveries;

              (iii) all  contributions  and  payments  with  respect to Employee
Plans that are required to be made by a Controlled  Group Member with respect to
periods ending on or before the Closing Date  (including  periods from the first
day of the current plan or policy year to the Closing  Date) have been,  or will
be, made or accrued before the Closing Date in accordance  with the  appropriate
plan document,  actuarial report,  collective  bargaining agreement or insurance
contract or arrangement or as otherwise required by ERISA or the Code;

              (iv)  with  respect  to each such  Employee  Plan,  to the  extent
applicable,  Grove has delivered to ERP true and complete  copies of (A) current
plan  documents,  or any and all other documents that establish the existence of
the current plan,  trust,  arrangement,  contract,  policy or commitment and all
amendments thereto, (B) the most recent  determination  letter, if any, received
from the IRS,  (C) the three  most  recent  Form  5500  Annual  Report  (and all
schedules  and  reports  relating  thereto)  and  actuarial  reports and (D) all
related trust agreements,  insurance  contracts or other funding agreements that
implement each such Employee Plan.

              (c)  With respect to each  Employee Plan,  there has not occurred,
              and no person or entity is contractually  bound to enter into, any
              "prohibited  transaction" within the meaning of Section 4975(c) of
              the Code or Section 406 of ERISA,  which transaction is not exempt
              under Section 4975(d) of the Code or Section 408 of ERISA.

              (d)  Except as disclosed in Schedule  2.12A,  no Controlled  Group
              Member has  maintained  or been  obligated  to  contribute  to any
              Employee  Plan  subject to Code  Section 412 or Title IV of ERISA.
              With respect to each  Employee  Plan set forth on Schedule  2.12A,
              Grove  represents that each such Employee Plan has been completely
              terminated in accordance with all Code and ERISA  requirements for
              a  "standard  termination"  (as  defined in 4041(b) of ERISA),  as
              applicable on the termination date.

              (e)  Except as set forth in Schedule  2.12 to the Grove Disclosure
              Letter,  with  respect  to each  Pension  Plan  maintained  by any
              Controlled  Group Member,  such Plan provides the Plan Sponsor the
              authority  to amend or  terminate  the  Pension  Plan at any time,
              subject to applicable requirements of ERISA and the Code.

              (f)  Except as disclosed on Schedule 2.12 to the Grove  Disclosure
              Letter, Grove has no obligation to make payments to any individual
              to offset, in whole or in part, any federal or state income taxes,
              including  taxes  imposed  pursuant  to  the  provisions  of  Code
              Sections 280G or 4999, and the  consummation  of the  transactions
              contemplated  by this  Agreement will not result in any excise tax
              withholding.

         2.13 EMPLOYEE  MATTERS.  Schedule 2.13 of the Grove  Disclosure  Letter
lists  the  employee  handbooks  of  Grove  and each of the  Grove  Subsidiaries
currently in effect.  A copy of each such employee  handbook has previously been
made  available  to ERP.  Except  as set  forth in  Schedule  2.13 of the  Grove
Disclosure Letter,  such handbooks fairly and accurately  summarize all material
employee  policies,  vacation  policies  and payroll  practices of Grove and the
Grove  Subsidiaries.  Neither Grove nor any of the Grove Subsidiaries is a party
to,  or  bound  by,  any  collective  bargaining  agreement,  contract  or other
agreement or understanding with a labor union or other labor  organization,  nor
has  Grove  or any of the  Grove  Subsidiaries  agreed  that  any  unit of their
employees is  appropriate  for  collective  bargaining.  No union or other labor
organization has been certified as bargaining  representative for any of Grove's
employees.  To the Knowledge of Grove there are no  organizational  efforts with
respect to the formation of a collective bargaining unit presently being made or
threatened involving employees of Grove or any of the Grove Subsidiaries.


                                       17
<PAGE>


         2.14  TAXES.

              (a) Each of Grove  and the  Grove  Subsidiaries  has filed all tax
returns  and  reports  required  to be filed by it (after  giving  effect to any
filing extension  properly granted by a Governmental  Entity having authority to
do so) and has paid (or Grove  has paid on its  behalf)  all  Taxes (as  defined
below)  shown or reflected on such returns and reports as required to be paid by
it and all such tax returns are correct in all material  respects  except (i) as
set forth in Schedule 2.14 to the Grove Disclosure  Letter,  or (ii) real estate
taxes that are being contested in good faith by appropriate proceedings, each as
described in Schedule 2.14 to the Grove Disclosure  Letter,  and for which Grove
or the applicable  Grove  Subsidiary  shall have set aside on its books adequate
reserves.  Except  with  respect to any Taxes which might be imposed or assessed
with respect to the matters set forth in Schedule 5.6(d) to the Grove Disclosure
Letter, the most recent audited financial  statements contained in the Grove SEC
Documents  reflect an adequate reserve for all material Taxes payable or accrued
by Grove and the Grove Subsidiaries for all taxable periods and portions thereof
through  the  date of such  financial  statements.  Since  the  Grove  Financial
Statement Date, Grove has incurred no liability for Taxes under Sections 857(b),
860(c) or 4981 of the Code, including,  without limitation, any Tax arising from
a prohibited transaction described in Section 857(b)(6) of the Code, and neither
Grove nor any Grove  Subsidiary  has incurred any liability for Taxes other than
in the ordinary  course of  business.  No  deficiencies  for any Taxes have been
proposed,  asserted  or  assessed  pursuant  to a "30-day  letter"  or notice of
deficiency  sent by the IRS, or, to the Knowledge of Grove,  except as set forth
in Schedule 2.14 of the Grove Disclosure Letter, otherwise proposed, asserted or
assessed against Grove or any of the Grove Subsidiaries.  No waivers of the time
to assess  any such Taxes have been  executed  by Grove or any Grove  Subsidiary
and, to the  Knowledge of Grove,  no requests  for such waivers are pending.  As
used in this  Agreement,  "Taxes"  shall include all federal,  state,  local and
foreign income, property, sales, franchise,  employment, excise and other taxes,
tariffs  or  governmental  charges  of  any  nature  whatsoever,  together  with
penalties, interest or additions to Tax with respect thereto.

              (b)  Grove  (i) has been  subject  to  taxation  as a real  estate
investment  trust (a  "REIT")  within the  meaning  of  Section  856 of the Code
commencing  with the taxable year  beginning  January 1, 1994, and has satisfied
all  requirements  to qualify as a REIT for such years,  (ii) has operated,  and
intends to continue  to operate,  in such a manner as to qualify as a REIT until
the Company Merger Effective Time and (iii) has not taken or omitted to take any
action which would reasonably be expected to (A) result in any rents paid by the
tenants of the Properties to be excluded from the definition of "rents from real
property" under Section  856(d)(2)(C) of the Code, or (B) otherwise  result in a
challenge  to its status as a REIT,  and no such  challenge  is  pending  or, to
Grove's  Knowledge,  threatened.  Each Grove  Subsidiary which is a partnership,
joint venture or limited  liability company (i) has been since its formation and
continues to be treated for federal  income tax purposes as either a partnership
or ignored  as a separate  entity  and not as a  corporation  or an  association
taxable  as a  corporation,  as the case may be,  and  (ii)  has not  since  its
formation owned any assets  (including,  without  limitation,  securities)  that
would  cause  Grove  to  violate  Section  856(c)(4)  of the  Code.  Each  Grove
Subsidiary  which is a  corporation  or treated as an  association  taxable as a
corporation  has been  since  the  date of its  formation  or  January  1,  1994
(whichever is later) a qualified  REIT  subsidiary  under Section  856(i) of the
Code.  All former  Grove  Subsidiaries,  if such  entities  had  remained  Grove
Subsidiaries, would comply with this Section 2.14.

         2.15  NO PAYMENTS TO EMPLOYEES, OFFICERS, TRUST MANAGERS OR DIRECTORS.

              (a) Set forth in Schedule 2.15 of the Grove Disclosure Letter is a
true and complete list of all cash and non-cash payments,  rights to property or
other  contract  rights  which may become  payable,  accelerated  or vested as a
result of the Company Merger or Partnership  Merger ("Section 2.15 Payments") to
or in each  current  or former  employee,  officer,  trustee,  trust  manager or
director  of Grove or any Grove  Subsidiary  (each a "Section  2.15  Employee").
Except  as  described  Schedule  2.15  to the  Grove  Disclosure  Letter,  or as
otherwise  provided for in this  Agreement,  there is no employment or severance
contract, or other agreement requiring payments, cancellation of indebtedness or
other  obligation  to be made on a change of control or otherwise as a result of
the consummation of any of the transactions contemplated by this Agreement, with
respect to any current or former employee,  officer,  trust manager,  trustee or
director of Grove or any Grove Subsidiary.  On or prior to the date hereof, each
executive  officer  of Grove  listed on  Schedule  2.15 to the Grove  Disclosure
Letter (each a "Grove Executive") has executed an


                                       18
<PAGE>


amendment to such Grove  Executive's  employment  agreement or arrangement  with
Grove or any Grove Subsidiary in the applicable form attached to Schedule 2.15.

              (b) Schedule 2.15 to the Grove Disclosure  Schedule sets forth (i)
all  payments  (whether  in cash,  in  equity  securities  of Grove or any Grove
Subsidiary  or otherwise) to be made to or for the account of employees of Grove
or any Grove Subsidiary (except for wages paid in the normal course of business)
which have been authorized and/or accrued but not paid and (ii) all compensation
payments  which have been made to any  employees  listed on Schedule 2.15 to the
Grove  Disclosure  Letter from January 1, 2000  through July 7, 2000.  As of the
date of this  Agreement,  no  compensation  payments  have  been  made to  Grove
employees since July 6, 2000.

              (c) Any Section 2.15 Payment or arrangement  or program  providing
for Section 2.15 Payments which were authorized,  adopted,  approved or ratified
after June 12, 2000 have been authorized,  adopted,  approved or ratified by the
Special  Committee,  other than the grants of certain Grove Options  pursuant to
and in  accordance  with the 1996 Plan,  each of which is  disclosed on Schedule
2.15 to the Grove Disclosure Letter.

         2.16  BROKERS;  SCHEDULE OF FEES AND  EXPENSES.  Except as disclosed in
Schedule 2.16 to the Grove  Disclosure  Letter,  no broker,  investment  banker,
financial advisor or other person, other than Houlihan Lokey Howard & Zukin, the
fees and expenses of which have previously been disclosed to ERP, is entitled to
any broker's,  finder's,  financial advisor's or other similar fee or commission
in  connection  with  the  transactions   contemplated  hereby  or  any  pending
acquisition  or  disposition  by  Grove  or  any  Grove  Subsidiary  based  upon
arrangements made by or on behalf of Grove or any Grove  Subsidiary.  A true and
correct copy of the engagement letter for Houlihan Lokey Howard & Zukin and each
person  referred to on Schedule 2.16 has been delivered to ERP prior to the date
hereof.

         2.17  COMPLIANCE  WITH  LAWS.  Except  as  disclosed  in the  Grove SEC
Documents or in Schedule 2.6 or Schedule  2.17 to the Grove  Disclosure  Letter,
neither Grove nor any of the Grove Subsidiaries has violated or failed to comply
with any statute, law, ordinance, regulation, rule, judgment, decree or order of
any Governmental  Entity  applicable to its business,  properties or operations,
except to the  extent  that such  violation  or  failure  would not have a Grove
Material Adverse Effect.

         2.18  CONTRACTS; DEBT INSTRUMENTS.

              (a) To the  Knowledge  of Grove,  except as disclosed in the Grove
SEC Documents or in Schedule 2.18 to the Grove  Disclosure  Letter,  there is no
contract or agreement  that purports to limit in any material  respect the names
under or the  geographic  location  in which Grove or any Grove  Subsidiary  may
conduct its  business.  Neither  Grove nor any Grove  Subsidiary  has received a
written  notice  that Grove or any Grove  Subsidiary  is in  violation  of or in
default  under (nor to the  Knowledge  of Grove does there  exist any  condition
which upon the  passage of time or the giving of notice or both would cause such
a violation of or default  under) any material loan or credit  agreement,  note,
bond, mortgage, indenture, lease, permit, concession,  franchise, license or any
other material contract, agreement, arrangement or understanding, to which it is
a party or by which it or any of its  properties  or assets is bound,  except as
set forth in Schedule 2.18 to the Grove Disclosure  Letter, nor to the Knowledge
of Grove does such a violation or default exist, except as set forth in Schedule
2.18 to the Grove  Disclosure  Letter,  or to the extent that such  violation or
default,  individually  or in the  aggregate,  would  not have a Grove  Material
Adverse Effect.

              (b) Schedule 2.18 to the Grove Disclosure Letter sets forth a list
of each loan or credit agreement, note, bond, mortgage,  indenture and any other
agreement and instrument  pursuant to which any Indebtedness (as defined herein)
of  Grove  or  any  Grove   Subsidiary  is   outstanding   or  may  be  incurred
(collectively,   the  "Debt  Documents"),  as  well  as,  with  respect  to  the
Indebtedness  evidenced  by  each  Debt  Document,  as  of  July  1,  2000,  the
outstanding  principal balance,  the maturity date, the applicable interest rate
(including  the method or formula for  calculating  any  interest  that is not a
fixed  percentage of the  principal  balance) and the amount of or the method or
formula  for  calculating  any Equity  Participation  (as defined  herein).  For
purposes of this Section 2.18,  "Indebtedness"  shall mean (i)  indebtedness for
borrowed money, whether secured or unsecured, (ii) obligations under conditional
sale or other title retention agreements relating to property purchased by such


                                       19
<PAGE>


person,  (iii)  capitalized lease  obligations,  (iv) obligations under interest
rate cap, swap, collar or similar  transaction or currency hedging  transactions
(valued at the  termination  value  thereof),  (v) obligations to pay any equity
kicker or other participation in the operating cash flow, gross revenue or other
income from the real property or other asset of Grove or any Grove Subsidiary or
in the  gross,  net or excess  sale,  financing,  refinancing  or other  capital
proceeds  from any such  property or other asset  (whether or not in  connection
with  any  other  Indebtedness)  (each  an  "Equity   Participation")  and  (vi)
guarantees of any such indebtedness of any other person. Grove hereby represents
and warrants that each item of  Indebtedness  may be assumed by ERP without cost
or penalty, except as set forth in Schedule 2.18 to the Grove Disclosure Letter,
and without the consent of or requirement to obtain the approval or confirmation
as to any matter from the holder of any such  Indebtedness  or any other person.
For purposes of this Section 2.18, "assumed by ERP" shall mean that, immediately
or  after  the  giving  of  notice  or the  passage  of  time  (or  both),  such
Indebtedness will not, either automatically or upon the exercise of any right or
option of the holder of such Indebtedness or any other person, be accelerated or
become due and  payable in whole or in part as a result of the  consummation  of
the transactions contemplated by this Agreement (including,  without limitation,
the Mergers).

              (c) Schedule 2.18 to the Grove  Disclosure  Letter sets forth each
interest rate cap,  interest rate collar,  interest rate swap,  currency hedging
transaction,  and any other agreement relating to a similar transaction to which
Grove or any Grove Subsidiary is a party or an obligor with respect thereto.

              (d) Except as set forth in Schedule  2.18 to the Grove  Disclosure
Letter,  neither  Grove  nor  any of the  Grove  Subsidiaries  is  party  to any
agreement  which  would  restrict  any of  them  from  prepaying  any  of  their
Indebtedness  without  penalty or premium at any time or which  requires  any of
them to maintain  any amount of  Indebtedness  with  respect to any of the Grove
Properties.

              (e) Neither Grove nor any of the Grove  Subsidiaries is a party to
any agreement  relating to the  management  of any of the Grove  Properties by a
party other than Grove or any  wholly-owned  Grove Subsidiary (a "Third Party"),
except the agreements  described in Schedule 2.18 to the Grove Disclosure Letter
(the "Third Party  Management  Agreements").  A true and  complete  copy of each
Third Party Management Agreement has previously been delivered to ERP.

              (f) None of Grove or any of the Grove  Subsidiaries  is a party to
any agreement  pursuant to which Grove or any Grove Subsidiary  manages any real
properties for any Third Party, except for the agreements  described in Schedule
2.18 to the Grove Disclosure  Letter (the "Outside  Management  Agreements").  A
true  and  complete  copy of each  Outside  Management  Agreement,  if any,  has
previously been delivered to ERP.

              (g)  Schedule  2.18  of the  Grove  Disclosure  Letter  lists  all
agreements  entered into by Grove or any of the Grove  Subsidiaries  relating to
the development, construction,  rehabilitation or renovation of, or additions or
expansions  to, any Grove  Properties  which are  currently  in effect and under
which  Grove or any of the  Grove  Subsidiaries  currently  has,  or  reasonably
expects to incur,  an obligation in excess of $125,000.  True and correct copies
of such agreements have previously been delivered to ERP.

              (h)  Schedule  2.18  to the  Grove  Disclosure  Letter  lists  all
agreements entered into by Grove or any of the Grove Subsidiaries  providing for
the sale of, or option to sell,  any Grove  Properties  or the  purchase  of, or
option to purchase, any real estate which are currently in effect.

              (i) Except as set forth in Schedule  2.18 to the Grove  Disclosure
Letter,  neither Grove nor any Grove  Subsidiary has any continuing  contractual
liability (i) for  indemnification  or otherwise under any agreement relating to
the sale of real estate  previously  owned,  whether directly or indirectly,  by
Grove or any Grove Subsidiary,  except for standard  indemnification  provisions
entered  into in the  normal  course  of  business,  (ii) to pay any  additional
purchase  price  for  any  of  the  Grove  Properties,  or  (iii)  to  make  any
reprorations  or  adjustments to prorations  that may previously  have been made
with respect to any property currently or formerly owned by Grove.

              (j) Except as set forth in Schedule  2.18 to the Grove  Disclosure
Letter,  neither Grove nor any Grove  Subsidiary has entered into or is subject,
directly or indirectly, to any Tax Protection Agreements. As used herein, a "Tax
Protection  Agreement" is an agreement,  oral or written, (A) that has as one of
its purposes to


                                       20
<PAGE>


permit a person or entity to take the position  that such person or entity could
defer federal  taxable income that otherwise  might have been  recognized upon a
transfer of property to the Grove Partnership or any other Grove Subsidiary that
is treated as a partnership  for federal  income tax purposes,  and (B) that (i)
prohibits or restricts in any manner the  disposition  of any assets of Grove or
any Grove  Subsidiary  (including,  without  limitation,  requiring Grove or any
Grove Subsidiary to indemnify any person for any tax liabilities  resulting from
any  such  disposition),  (ii)  requires  that  Grove  or any  Grove  Subsidiary
maintain, or put in place, or replace,  indebtedness,  whether or not secured by
one or more of the Grove  Properties,  or (iii) requires that Grove or any Grove
Subsidiary  offer  to any  person  or  entity  at any time  the  opportunity  to
guarantee  or otherwise  assume,  directly or  indirectly,  the risk of loss for
federal income tax purposes for  indebtedness  or other  liabilities of Grove or
any Grove Subsidiary.  A true and correct copy of each Tax Protection  Agreement
has been previously delivered to ERP.

              (k) Except as set forth in Schedule  2.18 to the Grove  Disclosure
Letter,  there are no material outstanding  contractual  obligations of Grove or
any  Grove  Subsidiary  to make any  investment  in the form of a loan,  capital
contribution or otherwise in any Grove Subsidiary or any other Person.  True and
correct copies of each such agreement has been delivered to ERP.

         2.19  OPINION OF FINANCIAL  ADVISOR.  Grove has received the opinion of
Houlihan Lokey Howard & Zukin, dated July 14, 2000, satisfactory to Grove, and a
signed  copy of which  has been  provided  to ERP,  to the  effect  that (i) the
consideration  to be received by the holders of Grove Common Shares  pursuant to
the Company Merger and the Limited Partners  pursuant to the Partnership  Merger
is fair, from a financial  point of view, to such holders and Limited  Partners,
and  (ii)  the  consideration  to be  received  by  Grove  OP  pursuant  to  the
transactions contemplated by the Retail Sale Agreement is fair, from a financial
point of view, to Grove OP.

         2.20 STATE TAKEOVER  STATUTES.  Grove has taken all action necessary to
exempt the transactions contemplated by this Agreement between ERP and Grove and
its  Affiliates  from  the  operation  of  Subtitles  6 and 7 of  Title 3 of the
Maryland  General  Corporation  Law and any other  "fair  price,"  "moratorium,"
"control share  acquisition"  or any other takeover  statute or similar  statute
enacted under the state or federal laws of the United States or similar  statute
or regulation (each a "Takeover Statute").

         2.21 REGISTRATION STATEMENT.  The information relating to Grove and the
Grove  Subsidiaries  included  in  the  Proxy  Statement  and  the  registration
statement  on Form S-4  under  the  Securities  Act  relating  to the ERP  Units
issuable in the Partnership Merger (the  "Registration  Statement") will not, as
of the date of mailing of the Proxy  Statement and as of the  effective  date of
the Registration  Statement,  contain any untrue statement of a material fact or
omit to state a material fact required to be stated therein or necessary to make
the  statements  therein,  in light of the  circumstances  under which they were
made, not misleading.

         2.22  DEVELOPMENT  PROPERTIES.  Schedule  2.22 to the Grove  Disclosure
Letter  lists  all  agreements  entered  into  by  Grove  or any  of  the  Grove
Subsidiaries  relating to the  development or  construction  of, or additions or
expansions  to,  any  real  properties  under  development  for  use  as  rental
properties by Grove or any Grove  Subsidiary which are material and currently in
effect.

         2.23 INVESTMENT COMPANY ACT OF 1940. Neither Grove nor any of the Grove
Subsidiaries is, or at the Company Merger Effective Time will be, required to be
registered  under the  Investment  Company  Act of 1940,  as amended  (the "1940
Act").

         2.24  TRADEMARKS,  PATENTS  AND  COPYRIGHTS.  Except  as set  forth  in
Schedule 2.24 to the Grove Disclosure Letter, or to the extent the inaccuracy of
any of the  following  (or the  circumstances  giving  rise to such  inaccuracy)
individually or in the aggregate would not have a Grove Material Adverse Effect,
Grove and each Grove  Subsidiary  owns or possesses  adequate  licenses or other
legal rights to use all patents,  patent rights,  trademarks,  trademark rights,
trade names,  trade name  rights,  copyrights,  service  marks,  trade  secrets,
applications   for  trademarks  and  for  service  marks,   know-how  and  other
proprietary  rights and information  used or held for use in connection with the
business of Grove and the Grove  Subsidiaries  as currently  conducted and Grove
has no Knowledge of any  assertion or claim  challenging  the validity of any of
the foregoing.  The conduct of the business of Grove and the Grove  Subsidiaries
as  currently  conducted  does not and will not  infringe in any way any patent,
patent right, license, trademark, trademark right, trade name, trade name right,
service mark, or copyright of any third party that,


                                       21
<PAGE>


individually or in the aggregate, could have a Grove Material Adverse Effect. To
Grove's Knowledge, there are no infringements of any proprietary rights owned by
or licensed by or to Grove or any Grove  Subsidiary that  individually or in the
aggregate could have a Grove Material Adverse Effect.

         2.25  INSURANCE.  Except  as set  forth on  Schedule  2.25 to the Grove
Disclosure  Letter,  each of Grove and the Grove  Subsidiaries  is, and has been
continuously  since the later of January  1, 1995 or the date upon  which  Grove
acquired  ownership  of such Grove  Subsidiary,  insured  with  insurers in such
amounts  and  against  such  risks and  losses as are  customary  for  companies
conducting the business as conducted by Grove and the Grove Subsidiaries  during
such time period.  Except as set forth on Schedule 2.25 to the Grove  Disclosure
Letter,  neither Grove nor any Grove  Subsidiary has received any written notice
of cancellations or termination with respect to any material insurance policy of
Grove or any Grove  Subsidiary.  The insurance  policies of Grove and each Grove
Subsidiary are valid and enforceable policies in all material respects. Schedule
2.25 sets  forth each  policy of  insurance  maintained  by Grove and each Grove
Subsidiary,  as well as a brief  description  of the coverage  provided,  annual
premium,  self insured retention or co-payment  provisions and deductible(s) for
each such policy.

         2.26 DEFINITION OF KNOWLEDGE OF GROVE.  As used in this Agreement,  the
phrase "to the Knowledge of Grove" (or words of similar import) means the actual
knowledge  of  those  individuals  identified  in  Schedule  2.26  of the  Grove
Disclosure Letter.

         2.27 VOTE REQUIRED.  Except for the Grove  Approvals,  no other vote or
consent by the equity holders of Grove or any Grove Subsidiary,  including,  but
not limited  to,  Grove OP,  (whether  by  agreement,  under  applicable  law or
otherwise)  is  required  to  approve  this   Agreement  and  the   transactions
contemplated   hereby,  nor  shall  any  such  equity  holders  be  entitled  to
dissenters'  rights or other rights of appraisal  in  connection  with the Grove
Approvals  or  the  consummation  of  the  transactions   contemplated  by  this
Agreement.

         2.28 SECURED CREDIT FACILITY.  The secured credit facility by and among
Grove,  Grove OP and  Sovereign  Bank may be paid off at or prior to the Company
Merger  Effective  Time without the  incurrence of any fee or penalty other than
fees payable due to a prepayment of a thirty (30) day LIBOR note.

         2.29  ASSUMPTION  OF SECURED  DEBT.  The  secured  debt of Grove may be
assumed  by ERP or an ERP  Subsidiary  pursuant  to or in  connection  with  the
Mergers  without  payment  of a fee or  penalty  in  connection  with  such debt
assumption exceeding,  in the aggregate, 1% of the aggregate outstanding balance
of such secured debt as of the date of such assumption.

         2.30 CERTAIN FEES.  The actual fees and expenses  incurred by Grove and
the Grove Subsidiaries in connection with the transactions  contemplated by this
Agreement  shall not  exceed  (i) the  aggregate  estimate  of all such fees and
expenses,  as set forth on Schedule 2.30 to the Grove Disclosure Letter, or (ii)
to the extent  specifically  provided on Schedule  2.30,  the  estimates  of the
specific categories of fees and expenses, as set forth on such Schedule.

                                   ARTICLE 3
                                   ---------

                      REPRESENTATIONS AND WARRANTIES OF ERP

         Except as set forth in the letter of even date  herewith  signed by the
President or an Executive Vice President of EQR, the sole general partner of ERP
("EQR"),  and  delivered  to  Grove  prior to the  execution  hereof  (the  "ERP
Disclosure  Letter"),  ERP  represents  and  warrants  to Grove  and Grove OP as
follows:

         3.1  ORGANIZATION,  STANDING  AND POWER OF ERP. ERP is  authorized  and
exists as an Illinois limited partnership under the laws of Illinois and has the
requisite  power and authority to carry on its business as now being  conducted.
ERP and its Subsidiaries (the "ERP Subsidiaries") are duly qualified or licensed
to do business and are in good standing in each jurisdiction in which the nature
of its  business  or the  ownership  or  leasing  of its  properties  makes such
qualification or licensing necessary, other than in such jurisdictions where the
failure to be so qualified or licensed,  individually or in the aggregate, would
not have a material adverse effect on the business, properties,


                                       22
<PAGE>


assets,  financial  condition  or  results  of  operations  of ERP  and  the ERP
Subsidiaries taken as a whole ("ERP Material Adverse Effect"). ERP has delivered
to Grove a  complete  and  correct  copy of the ERP  Agreement,  as  amended  or
supplemented to the date of this Agreement.

         3.2 CAPITAL STRUCTURE OF ERP. Schedule 3.2 to the ERP Disclosure Letter
sets forth the number of outstanding ERP Units as of June 30, 2000.

         3.3 AUTHORITY; NONCONTRAVENTION; CONSENTS.

              (a) ERP has the  requisite  power and authority to enter into this
Agreement and to consummate the  transactions  contemplated by this Agreement to
which ERP is a party.  The execution  and delivery of this  Agreement by ERP and
the  consummation by ERP of the  transactions  contemplated by this Agreement to
which ERP is a party have been duly  authorized by all  necessary  action on the
part of ERP.  This  Agreement  has been duly  executed and  delivered by ERP and
constitutes a valid and binding  obligation of ERP,  enforceable  against ERP in
accordance  with  its  terms,  subject  to  applicable  bankruptcy,  insolvency,
moratorium  or other  similar  laws  relating to  creditors'  rights and general
principles of equity.

              (b)  Except as set  forth in  Schedule  3.3 to the ERP  Disclosure
Letter,  the  execution  and  delivery of this  Agreement by ERP do not, and the
consummation  of the  transactions  contemplated  by this  Agreement  by ERP and
compliance by ERP with the provisions of this Agreement will not, conflict with,
or result in any  violation  of or default  (with or without  notice or lapse of
time, or both) under,  or give rise to a right of  termination,  cancellation or
acceleration of any material obligation or the loss of a material benefit under,
or result in the  creation of any Lien upon any of the  properties  or assets of
ERP or any ERP Subsidiary under, (i) the ERP Agreement or the comparable charter
or organizational documents or partnership or similar agreement (as the case may
be) of any other ERP Subsidiary,  each as amended or supplemented to the date of
this  Agreement,  (ii) any  loan or  credit  agreement,  note,  bond,  mortgage,
indenture, reciprocal easement agreement, lease or other agreement,  instrument,
permit, concession, franchise or license to which ERP or any ERP Subsidiary is a
party or their respective properties or assets are bound or (iii) subject to the
governmental  filings and other matters  referred to in the following  sentence,
any Laws applicable to ERP or any ERP Subsidiary or their respective  properties
or assets,  other than, in the case of clause (ii) or (iii), any such conflicts,
violations,  defaults,  rights,  loss  or  Liens  that  individually  or in  the
aggregate  would not (x) have an ERP Material  Adverse Effect or (y) prevent the
consummation of the  transactions  contemplated  by this Agreement.  No consent,
approval,  order or  authorization  of, or  registration,  declaration or filing
with, any  Governmental  Entity is required by or with respect to ERP or any ERP
Subsidiary  in connection  with the execution and delivery of this  Agreement or
the  consummation  by  ERP  of any of  the  transactions  contemplated  by  this
Agreement,  except  for  (i) the  filing  with  the SEC of (x) the  Registration
Statement and (y) such reports under Section 13(a) of the Exchange Act as may be
required in connection with this Agreement and the transactions  contemplated by
this Agreement, (ii) the acceptance for record of the Company Articles of Merger
by the Maryland  Department,  (iii) the acceptance for record of the Partnership
Certificate  of Merger by the  Delaware  Secretary,  (iv) such filings as may be
required in connection with the payment of any transfer and gains taxes and (iv)
such  other  consents,   approvals,   orders,   authorizations,   registrations,
declarations and filings including, without limitation, any consents, approvals,
orders, authorizations, registrations, declarations and filings required by HUD,
MFHA or  similar  agencies,  (A) as are set  forth  in  Schedule  3.3 to the ERP
Disclosure  Letter,  (B)  as may be  required  under  federal,  state  or  local
environmental  laws or (C) which, if not obtained or made,  would not prevent or
delay  in any  material  respect  the  consummation  of any of the  transactions
contemplated  by this  Agreement or otherwise  prevent ERP from  performing  its
obligations  under this Agreement in any material respect or have,  individually
or in the aggregate, an ERP Material Adverse Effect.

              (c) For purposes of  determining  compliance  with the  Hart-Scott
Act,  ERP confirms  that the conduct of its  business  does not require a filing
under the Hart-Scott Act in connection with the Mergers.

         3.4 SEC DOCUMENTS;  FINANCIAL STATEMENTS;  UNDISCLOSED LIABILITIES. ERP
has filed all required reports, schedules, forms, statements and other documents
with the SEC  since  January  1,  1995  through  the date  hereof  (the "ERP SEC
Documents").  All of the ERP SEC Documents (other than preliminary material), as
of their respective filing dates or as of the date of the last amendment thereof
(if amended after filing), complied in all


                                       23
<PAGE>


material respects with all applicable requirements of the Securities Act and the
Exchange Act and, in each case, the rules and regulations promulgated thereunder
applicable to such ERP SEC Documents.  None of the ERP SEC Documents at the time
of filing  contained any untrue statement of a material fact or omitted to state
any 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, except to the extent such statements have been modified or
superseded by later ERP SEC Documents filed on a non-confidential basis prior to
the date of this Agreement. The consolidated financial statements of ERP and the
ERP  Subsidiaries  included in the ERP SEC Documents  complied as to form in all
material  respects with  applicable  accounting  requirements  and the published
rules and  regulations  of the SEC with respect  thereto,  have been prepared in
accordance with GAAP (except, in the case of unaudited statements,  as permitted
by the  applicable  rules and  regulations  of the SEC)  applied on a consistent
basis during the periods involved (except as may be indicated  therein or in the
notes  thereto)  and  fairly  presented,   in  accordance  with  the  applicable
requirements of GAAP and the applicable rules and regulations of the SEC, in all
material  respects,  the  consolidated  financial  position  of ERP  and the ERP
Subsidiaries,  taken as a whole,  as of the dates  thereof and the  consolidated
results of operations and cash flows for the periods then ended (subject, in the
case of unaudited  statements,  to normal year-end audit adjustments,  any other
adjustments  described  therein and the fact that certain  information and notes
have been condensed or omitted in accordance with the Exchange Act).  Except for
liabilities  and  obligations  set forth in the ERP SEC Documents or in Schedule
3.4 to the ERP  Disclosure  Letter,  neither ERP nor any ERP  Subsidiary has any
liabilities or obligations of any nature (whether accrued, absolute,  contingent
or otherwise)  required by GAAP to be set forth on a consolidated  balance sheet
of ERP or in the notes  thereto  and which,  individually  or in the  aggregate,
would have an ERP Material Adverse Effect,  after taking into account any assets
acquired  or  services  provided  in  connection  with  the  incurrence  of such
liabilities or obligations.

         3.5 ABSENCE OF CERTAIN  CHANGES OR EVENTS.  Except as  disclosed in the
ERP SEC  Documents or in Schedule 3.5 to the ERP  Disclosure  Letter,  since the
date of the most recent  audited  financial  statements  included in the ERP SEC
Documents (the "ERP Financial  Statement  Date"),  ERP and the ERP  Subsidiaries
have conducted  their business only in the ordinary  course (taking into account
prior  practices,  including  the  acquisition  of  properties  and  issuance of
securities)  and  there  has not been (a) any  material  adverse  change  in the
business,  financial  condition  or  results  of  operations  of ERP and the ERP
Subsidiaries taken as a whole (an "ERP Material Adverse Change"),  nor has there
been any  occurrence  or  circumstance  that  with  the  passage  of time  would
reasonably be expected to result in an ERP Material  Adverse Change,  (b) except
for regular  quarterly  distributions (in the case of ERP) with customary record
and payment dates, any declaration,  setting aside or payment of any dividend or
other  distribution  (whether in cash, stock or property) with respect to any of
ERP's partnership interests,  (c) any split,  combination or reclassification of
any of ERP's partnership interests, (d) any damage, destruction or loss, whether
or not  covered by  insurance,  that has or would have an ERP  Material  Adverse
Effect, or (e) any change made prior to the date of this Agreement in accounting
methods,  principles  or  practices  by  ERP or any  ERP  Subsidiary  materially
affecting its assets,  liabilities or business,  except insofar as may have been
disclosed in the ERP SEC Documents or required by a change in GAAP.

         3.6  LITIGATION.  Except as  disclosed  in the ERP SEC  Documents or in
Schedule 3.6 to the ERP Disclosure  Letter,  and other than personal  injury and
other routine tort litigation  arising from the ordinary course of operations of
ERP and the ERP Subsidiaries (a) which are covered by adequate insurance, or (b)
for which all material costs and liabilities  arising therefrom are reimbursable
pursuant to common area  maintenance  or similar  agreements,  there is no suit,
action or proceeding pending or, to the Knowledge of ERP,  threatened in writing
against or affecting  ERP or any ERP  Subsidiary  that,  individually  or in the
aggregate,  (i) could  reasonably  be expected to have an ERP  Material  Adverse
Effect,  nor is there any  judgment,  decree,  injunction,  rule or order of any
Governmental Entity or arbitrator  outstanding against ERP or any ERP Subsidiary
having or which could  reasonably  be expected to have any such effect,  or (ii)
could  reasonably  be  expected  to  prevent  the  consummation  of  any  of the
transactions contemplated by this Agreement.

         3.7 PROPERTIES.

              (a) ERP or one of the ERP  Subsidiaries  owns fee simple  title to
each of the real  properties  listed in the ERP SEC  Filings as owned by it (the
"ERP Properties"),  except where the failure to own such title would not have an
ERP Material Adverse Effect.


                                       24
<PAGE>


              (b)    The ERP  Properties are not  subject to any Encumbrances or
Property Restrictions or located in a flood zone area "V" which, individually or
in the aggregate, would cause an ERP Material Adverse Effect.

              (c) Valid policies of title  insurance  have been issued  insuring
ERP's or the applicable ERP  Subsidiary's fee simple title to the ERP Properties
except  where the failure to obtain such title  insurance  would not have an ERP
Material Adverse Effect.

              (d) ERP has no  Knowledge  (i)  that it has  failed  to  obtain  a
certificate,   permit  or  license  from  any   governmental   authority  having
jurisdiction over any of the ERP Properties where such failure would have an ERP
Material   Adverse  Effect,   or  of  any  pending  threat  of  modification  or
cancellation of any of the same which would have an ERP Material Adverse Effect,
(ii) of any written  notice of any violation of any federal,  state or municipal
law, ordinance,  order, rule, regulation or requirement affecting any of the ERP
Properties  issued  by any  governmental  authorities  which  would  have an ERP
Material  Adverse  Effect,  or (iii) of any structural  defects  relating to ERP
Properties,  ERP  Properties  whose  building  systems are not in working order,
physical  damage to any ERP  Property  for which there is no insurance in effect
covering  the  cost  of  restoration,   any  current   renovation  or  uninsured
restoration,  except such structural  defects,  building  systems not in working
order,  physical  damage,  renovation and  restoration  which, in the aggregate,
would not have an ERP Material Adverse Effect.

              (e) All work to be  performed,  payments to be made and actions to
be taken by ERP or the ERP Subsidiaries prior to the date hereof pursuant to any
agreement  entered into with a governmental body or authority in connection with
a site approval,  zoning  reclassification or similar action relating to any ERP
Property  (e.g.,  Local  Improvement   District,   Road  Improvement   District,
Environmental  Mitigation),  has been performed,  paid or taken, as the case may
be, except where the failure to do so would,  in the aggregate,  not have an ERP
Material Adverse Effect.

         3.8 ENVIRONMENTAL MATTERS. None of ERP, any of the ERP Subsidiaries or,
to ERP's  Knowledge,  any other Person has caused or permitted  (a) the unlawful
presence of any Hazardous  Substances on any of the ERP  Properties,  or (b) any
unlawful spills, releases, discharges or disposal of Hazardous Materials to have
occurred or be presently  occurring on or from the ERP Properties as a result of
any  construction on or operation and use of the ERP Properties,  which presence
or occurrence  would,  individually  or in the  aggregate,  have an ERP Material
Adverse Effect;  and in connection with the construction on or operation and use
of the ERP Properties, ERP and the ERP Subsidiaries have not failed to comply in
any  material  respect with all  applicable  Environmental  Laws,  except to the
extent such failure to comply,  individually or in the aggregate, would not have
an ERP Material Adverse Effect.

         3.9 TAXES.

              (a) Each of ERP and the ERP Subsidiaries has filed all tax returns
and  reports  required  to be filed by it (after  giving  effect  to any  filing
extension  properly granted by a Governmental  Entity having authority to do so)
and has paid (or ERP has paid on its  behalf) all Taxes  shown or  reflected  on
such  returns and reports as required to be paid by it except  where the failure
to file such tax returns or reports and failure to pay such Taxes would not have
an ERP Material Adverse Effect.  Since the ERP Financial Statement Date, EQR has
incurred no liability  for taxes under  Sections  857(b),  860(c) or 4981 of the
Code, including without limitation any tax arising from a prohibited transaction
described  in  Section  857(b)(6)  of the  Code,  and  neither  ERP  nor any ERP
Subsidiary  has  incurred  any  liability  for taxes other than in the  ordinary
course of business.  No deficiencies for any Taxes have been proposed,  asserted
or assessed  pursuant to a "30-day  letter" or notice of deficiency  sent by the
IRS,  or, to the  Knowledge  of ERP,  otherwise  proposed,  asserted or assessed
against ERP or any of the ERP Subsidiaries.

              (b) EQR (i) for all taxable years  commencing  with 1992, has been
subject to  taxation as a REIT within the meaning of Section 856 of the Code and
has satisfied  all  requirements  to qualify as a REIT for such years,  (ii) has
operated,  and intends to continue to operate, in such a manner as to qualify as
a REIT for the tax year ending  December  31,  2000,  and (iii) has not taken or
omitted to take any action which would  reasonably  be expected to (A) result in
any  rents  paid by  tenants  to the ERP  Properties  to be  excluded  from  the
definition of "rents from real property" under Section 856(d)(2) of the Code, or
(B) otherwise result in a challenge to EQR's status as a REIT, and


                                       25
<PAGE>


no such  challenge  is  pending  or, to ERP's  Knowledge,  threatened.  Each ERP
Subsidiary which is a partnership,  joint venture or limited  liability  company
has been treated  since its  formation  and  continues to be treated for federal
income tax purposes as a partnership,  or ignored as a separate  entity,  as the
case  may  be,  and  not as a  corporation  or as an  association  taxable  as a
corporation.  Each corporation,  trust or other entity taxable as an association
which has merged with and into EQR had been subject to taxation as a REIT at all
times  since  its  initial  election  of  REIT  status  and  had  satisfied  all
requirements  to qualify as a REIT for such  years,  except to the extent that a
failure to satisfy  such  requirements  would not have an ERP  Material  Adverse
Effect.  Each Subsidiary of EQR which is a corporation or which is treated as an
association  taxable as a corporation  for federal income tax purposes (of which
EQR directly or  indirectly  owns ten percent  (10%) or more of the  outstanding
voting securities (as defined in Section 856(c) of the Code)) has been since the
date of its formation or since EQR's first taxable year as a REIT  (whichever is
later) a qualified REIT subsidiary under Section 856(i) of the Code.

         3.10 BROKERS. No broker,  investment banker, financial advisor or other
person is entitled  to any  broker's,  finder's,  financial  advisor's  or other
similar fee or  commission  in  connection  with the  transactions  contemplated
hereby  based  upon  arrangements  made  by or on  behalf  of  ERP  or  any  ERP
Subsidiary.

         3.11  COMPLIANCE  WITH  LAWS.  Except  as  disclosed  in  the  ERP  SEC
Documents, neither ERP nor any of the ERP Subsidiaries has violated or failed to
comply with any statute, law, ordinance,  regulation,  rule, judgment, decree or
order of any  Governmental  Entity  applicable  to its  business,  properties or
operations,  except to the extent that such  violation or failure would not have
an ERP Material Adverse Effect.

         3.12 CONTRACTS;  DEBT  INSTRUMENTS.  Neither ERP nor any ERP Subsidiary
has received a written  notice that ERP or any ERP Subsidiary is in violation of
or in default  under (nor to the  Knowledge  of ERP does (i) such a violation or
default exist or (ii) does there exist any condition which,  upon the passage of
time or the giving of notice or both would cause such a violation  or default to
exist) any material loan or credit agreement,  note, bond, mortgage,  indenture,
lease, permit,  concession,  franchise,  license or any other material contract,
agreement,  arrangement or understanding,  to which it is a party or by which it
or any of its properties or assets is bound, except to the extent such violation
or default,  individually  or in the  aggregate,  would not have an ERP Material
Adverse  Effect,  except as set  forth in  Schedule  3.12 to the ERP  Disclosure
Letter.

         3.13 STATE  TAKEOVER  STATUTES.  ERP has taken all action  necessary to
exempt transactions  between ERP and Grove and its Affiliates from the operation
of any Takeover Statute.

         3.14  REGISTRATION  STATEMENT.  The information with respect to ERP and
the  ERP  Subsidiaries  included  in the  Proxy  Statement  or the  Registration
Statement  will not, as of the date of mailing of the Proxy  Statement and as of
the effective date of the Registration Statement, 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, in light of the circumstances under
which they were made, not misleading.

         3.15  INVESTMENT  COMPANY  ACT OF 1940.  Neither ERP nor any of the ERP
Subsidiaries is, or at the Company Merger Effective Time will be, required to be
registered under the 1940 Act.

         3.16  DEFINITION  OF KNOWLEDGE OF ERP. As used in this  Agreement,  the
phrase "to the  Knowledge of ERP" (or words of similar  import) means the actual
knowledge of those individuals identified in Schedule 3.16 to the ERP Disclosure
Letter.

         3.17 VOTE REQUIRED.  No vote or consent by the equity holders of ERP or
any ERP Subsidiary (whether by agreement,  under applicable law or otherwise) is
required to approve this Agreement or the transactions  contemplated hereby, nor
will any such equity holders be entitled to  dissenters'  rights or other rights
of  appraisal  in  connection  with  the   consummation   of  the   transactions
contemplated by this Agreement.


                                       26
<PAGE>


         3.18 EMPLOYEE POLICIES.  Each employee plan or arrangement of ERP is in
material  compliance with ERISA,  to the extent subject to ERISA,  and any other
applicable law governing such employee plan or arrangement.

         3.19 FINANCING.  ERP will have readily available all funds necessary to
perform its obligations  under this Agreement and the transactions  contemplated
hereby.

         3.20 VALIDITY OF SECURITIES  ISSUED.  Any ERP Units issued  pursuant to
the Partnership  Merger,  and any shares of EQR Common issued upon redemption of
such  ERP  Units,  when  issued,  shall  be  duly  authorized,  validly  issued,
fully-paid and non-assessable.

                                   ARTICLE 4
                                   ---------

                                   COVENANTS
                                   ---------

         4.1 ACQUISITION PROPOSALS.  Prior to the Company Merger Effective Time,
Grove agrees that:

              (a) neither it nor any of the Grove  Subsidiaries  shall initiate,
solicit or  encourage,  directly or  indirectly,  any inquiries or the making or
implementation  of any proposal or offer  (including,  without  limitation,  any
proposal or offer to any of their respective  shareholders or limited  partners)
with  respect  to  a  merger,   acquisition,   tender  offer,   exchange  offer,
consolidation,  sale of  assets  or  similar  transaction  involving  all or any
significant  portion of the assets or any equity  securities  of Grove or any of
the  Grove  Subsidiaries,  other  than  the  transactions  contemplated  by this
Agreement  (any such  proposal  or offer  being  hereinafter  referred  to as an
"Acquisition  Proposal") or engage in any negotiations concerning or provide any
confidential  information or data to, or have any  discussions  with, any person
relating to an  Acquisition  Proposal,  or  otherwise  facilitate  any effort or
attempt to make or implement an Acquisition Proposal;

              (b)  it  will  use  its  best  efforts  not to  permit  any of its
officers, trust managers,  employees,  agents or financial advisors to engage in
any of the activities described in Section 4.1(a);

              (c) it will  immediately  cease  and  cause to be  terminated  any
existing  activities,  discussions or  negotiations  with any parties  conducted
heretofore  with  respect to any of the  foregoing  and will take the  necessary
steps to inform the individuals or entities referred to in Section 4.1(b) of the
obligations undertaken in this Section 4.1; and

              (d) it  will  notify  ERP as  promptly  as  practicable  if  Grove
receives any such inquiries or proposals,  or any requests for such information,
or if any such  negotiations  or  discussions  are  sought  to be  initiated  or
continued with it;

provided, however, that nothing contained in this Section 4.1 shall prohibit the
Grove Board from (i) furnishing  information to or entering into  discussions or
negotiations  with, any person or entity that makes an  unsolicited  Acquisition
Proposal, if, and only to the extent that (A) the Grove Board determines in good
faith that failure to do so would create a reasonable probability of a breach of
its duties to  shareholders  or Limited  Partners  imposed by law,  (B) prior to
furnishing  such  information  to, or entering into  discussions or negotiations
with, such person or entity,  Grove provides written notice to ERP to the effect
that it is furnishing  information to, or entering into  discussions  with, such
person or entity,  and (C) subject to any  confidentiality  agreement  with such
person or entity  (which  Grove  determined  in good  faith was  required  to be
executed in order for the Grove Board to comply with its duties to  shareholders
or Limited  Partners  imposed by law), Grove keeps ERP informed of the status of
any  such  discussions  or  negotiations;  and  (ii) to the  extent  applicable,
complying with Rule 14e-2 or Rule 14d-9  promulgated under the Exchange Act with
regard to an Acquisition Proposal.  Nothing in this Section 4.1 shall (x) permit
Grove to terminate this Agreement (except as specifically  provided in Article 7
hereof),  (y)  permit  Grove to  enter  into an  agreement  with  respect  to an
Acquisition  Proposal  during the term of this  Agreement  (it being agreed that
during the


                                       27
<PAGE>


term of this Agreement,  Grove shall not enter into an agreement with any Person
that provides for, or in any way  facilitates,  an Acquisition  Proposal  (other
than a confidentiality  agreement in customary form executed as provided above))
or (z) affect any other  obligation  of Grove  under this  Agreement;  provided,
however,  that the Grove Board may approve and recommend a Superior  Acquisition
Proposal  and,  in  connection  therewith,  withdraw  or modify its  approval or
recommendation  of this  Agreement  and the Mergers.  As used herein,  "Superior
Acquisition  Proposal"  means a bona fide  Acquisition  Proposal made by a third
party  which a majority of the  members of the Grove  Board  determines  in good
faith to be more favorable to Grove's  shareholders  and Limited Partners from a
financial point of view than the Mergers and which the Grove Board determines is
reasonably capable of being consummated.

         4.2 CONDUCT OF GROVE'S  BUSINESS  PENDING MERGER.  Prior to the Company
Merger Effective Time,  except as (i)  contemplated by this Agreement,  (ii) set
forth in Schedule 4.2 to the Grove Disclosure Letter, (iii) within the aggregate
amounts reflected in the Grove Capital Budget or (iv) consented to in writing by
ERP, Grove shall, and shall cause each of the Grove Subsidiaries to, conduct its
business only in the usual, regular and ordinary course and in substantially the
same manner as heretofore conducted,  and, irrespective of whether or not in the
ordinary  course of  business,  Grove  shall,  and shall cause each of the Grove
Subsidiaries to:

              (a) use its  reasonable  efforts to preserve  intact its  business
organizations  and goodwill and keep  available the services of its officers and
employees;

              (b) confer on a regular basis with one or more  representatives of
ERP to report  operational  matters of materiality  and, subject to Section 4.1,
any proposals to engage in material transactions;

              (c)  promptly  notify  ERP  of any  material  emergency  or  other
material change in the condition (financial or otherwise), business, properties,
assets,  liabilities, or the normal course of its businesses or in the operation
of its properties, or of any material governmental complaints, investigations or
hearings (or communications indicating that the same may be contemplated);

              (d) promptly deliver to ERP true and correct copies of any report,
statement  or  schedule  filed  with  the  SEC  subsequent  to the  date of this
Agreement;

              (e)  maintain  its  books  and  records  in  accordance  with GAAP
consistently  applied and not change in any material  manner any of its methods,
principles or practices of accounting in effect at the Grove Financial Statement
Date, except as may be required by the SEC, applicable law or GAAP;

              (f) duly and  timely  file all  reports,  tax  returns  and  other
documents required to be filed with federal, state, local and other authorities,
subject to extensions  permitted by law,  provided Grove notifies ERP that it is
availing itself of such extensions and provided such extensions do not adversely
affect Grove's status as a qualified REIT under the Code;

              (g) not make or rescind any express or deemed election relative to
Taxes (unless  required by law or necessary to preserve Grove's status as a REIT
or the status of any Grove  Subsidiary as a partnership  for federal  income tax
purposes or as a qualified REIT subsidiary  under Section 856(i) of the Code, as
the case may be);

              (h) other than in connection with those development agreements set
forth in Schedule 2.22 to the Grove Disclosure  Letter or as permitted  pursuant
to  subsection  (o) hereof,  not acquire,  enter into any option or agreement to
acquire, or exercise an option or contract to acquire, additional real property,
incur  additional  indebtedness  except for working  capital under its revolving
line(s) of credit,  encumber assets or commence  construction  of, or enter into
any agreement or commitment to develop or construct  other real estate  projects
except in connection with the potential  purchase of (i) 521 subsidized  elderly
apartment units in Brookline,  Massachusetts (the "Brookline Transaction"), (ii)
interests in the Kismul Family Limited  Partnership (the "Kismul  Transaction"),
and (iii)  interests  in certain  partnerships  affiliated  with Sydney and John
Rosenthal  (the  "Rosenthal  Transactions"),  each as more  fully  described  in
Schedule 4.2 of the Grove Disclosure Letter,  provided,  however, that ERP shall
have the right to review and comment upon the terms of and documentation related
to the Brookline  Transaction and Kismul Transaction and necessary amendments to
the documentation related to the Rosenthal Transactions in order


                                       28
<PAGE>


to provide for transactions  contemplated by this Agreement,  and such terms and
documentation  shall be subject to prior  approval by ERP,  which approval shall
not be unreasonably withheld or delayed;

              (i) not amend its Bylaws or the Grove  Declaration or the articles
of  incorporation,  bylaws,  partnership  agreement,  joint venture agreement or
comparable  charter or  organization  document of any Grove  Subsidiary  without
ERP's  prior  written  consent,  which  shall not be  unreasonably  withheld  or
delayed;

              (j)  issue  no and make no  change  in the  number  of  shares  of
beneficial  interest,  capital stock,  membership  interests or units of limited
partnership interest issued and outstanding or reserved for issuance, other than
pursuant  to those  items  disclosed  in  Schedule  2.3 to the Grove  Disclosure
Letter;

              (k) except in  connection  with and  pursuant  to the terms of the
Brookline  Transaction  and  Rosenthal  Transactions,  grant no options or other
right or  commitment  relating to its shares of  beneficial  interest or capital
stock,  membership  interests  or units of limited  partnership  interest or any
security  convertible  into its shares of beneficial  interest or capital stock,
membership interests or units of limited partnership  interest,  or any security
the value of which is measured by shares of beneficial interest, or any security
subordinated to the claim of its general creditors;

              (l) except as  permitted  by  Section  5.9 and for  dividends  and
distributions by a Grove Subsidiary to Grove or a wholly-owned Grove Subsidiary,
not (x)  authorize,  declare,  set aside or pay any  dividend  or make any other
distribution or payment with respect to any shares of its beneficial interest or
capital  stock,  or (y) except for  redemptions  of Grove LP Units in accordance
with the  Grove OP  Agreement  or  pursuant  to the  terms  of the  Retail  Sale
Agreement,  directly or  indirectly  redeem,  purchase or otherwise  acquire any
shares of beneficial interest,  shares of capital stock, membership interests or
units of  partnership  interest or any option,  warrant or right to acquire,  or
security  convertible  into,  shares of beneficial  interest,  shares of capital
stock, membership interests, or units of partnership interest of any Person;

              (m) not  sell,  lease,  mortgage,  subject  to  Lien or  otherwise
dispose of any material part of its assets,  individually  or in the  aggregate,
except in the ordinary course of business;

              (n) not make any loans,  advances or capital  contributions to, or
investments  in,  any other  Person,  other than  loans,  advances  and  capital
contributions  to  wholly-owned  Grove  Subsidiaries  in  existence  on the date
hereof;

              (o) not pay, discharge or satisfy any material claims, liabilities
or  obligations  (absolute,  accrued,  asserted  or  unasserted,  contingent  or
otherwise),  other than the payment, discharge or satisfaction,  in the ordinary
course of business  consistent  with past practice,  or in accordance with their
terms, of liabilities  reflected or reserved against in, or contemplated by, the
most recent consolidated  financial  statements (or the notes thereto) furnished
to ERP or  incurred in the  ordinary  course of  business  consistent  with past
practice;

              (p) not enter into any commitment, contractual obligation, capital
expenditure or  transaction  (each,  a  "Commitment")  which may result in total
payments or liability by or to it in excess of $135,000 or aggregate Commitments
in excess of $250,000; provided, however, that no Commitments shall be made with
respect to any Grove Property  subject to the Retail Sale  Agreement,  except as
specifically permitted by the terms of the Retail Sale Agreement;

              (q) not guarantee the  indebtedness of another Person,  enter into
any "keep well" or other agreement to maintain any financial statement condition
of another Person or enter into any  arrangement  having the economic  effect of
any of the foregoing;

              (r) not enter into or amend any commitment with any officer, trust
manager, director, trustee, consultant or Affiliate of Grove or any of the Grove
Subsidiaries  other than commitments with consultants  involving payments of (i)
less than  $15,000  per  consultant  and (ii) total  aggregate  payments  to all
consultants of less than $110,000;


                                       29
<PAGE>


              (s) not  increase  any  compensation  or enter  into or amend  any
employment  agreement  or  other  arrangement  with any of its  officers,  trust
managers,  trustees,  directors or employees earning more than $50,000 per annum
as of the date hereof,  other than  waivers by employees of benefits  under such
agreements,  enter into any employment  agreement or arrangement  with any other
Person not currently an employee of Grove or a Grove  Subsidiary,  providing for
compensation in excess of $60,000 per annum or increase any compensation,  enter
into or amend any  employment  agreement  or other  arrangement  with any new or
current  employee  (except  with respect to  arrangements  which do not comprise
employment  agreements or amendments  thereto in the ordinary course of business
and consistent  with past practice in timing and amount or pursuant to the terms
of any such  arrangement)  or take any action which could result in the creation
of a right of the type required to be disclosed in Section 2.15, or alter in any
manner a payment or right  disclosed  on Schedule  2.15 of the Grove  Disclosure
Letter;

              (t) not adopt any new employee  benefit plan or amend any existing
plans,  options or rights,  except for  changes  which are  required  by law and
changes  which are not more  favorable to  participants  in the  aggregate  than
provisions presently in effect;

              (u) not settle any shareholder or limited  partner,  derivative or
other  claims  arising  out of or in  connection  with  any of the  transactions
contemplated by this Agreement  without the prior written approval of ERP, which
approval shall not be unreasonably withheld or delayed;

              (v) not reduce its ownership of any of Grove  Subsidiaries  except
pursuant to a transaction  which has the same effect as a transaction  permitted
by subsection (m) hereof;

              (w) not accept a promissory  note in payment of the exercise price
payable under any Grove Option;

              (x) not  enter  into or amend or  otherwise  modify  or waive  any
rights under any agreement or arrangement  for the persons that are  affiliates,
or as of the date hereof, all officers, trust managers,  trustees,  directors or
employees, of Grove or any Grove Subsidiary;

              (y) except as  provided in  Schedule  2.9 or Schedule  2.18 to the
Grove  Disclosure  Letter,  not directly or  indirectly or through a subsidiary,
merge or consolidate with, acquire all or substantially all of the assets of, or
acquire the beneficial  ownership of a majority of the outstanding capital stock
or other equity interest in any Person or entity;

              (z) use its  reasonable  best  efforts to continue to qualify as a
REIT  prior  to the  Company  Merger  Effective  Time,  and not  enter  into any
transaction  that would be  considered  a prohibited  transaction  as defined in
Section 857(b)(6) of the Code; and

              (aa) with  respect to the Retail  Sale  Agreement,  (i) not amend,
waive any  provision,  or exercise any right under,  the Retail Sale  Agreement,
(ii) operate the Grove Subsidiaries subject to the Retail Sale Agreement only in
the ordinary course of business and (iii) not take any action which would result
in a material change to the assets and  liabilities of such Grove  Subsidiaries,
as set forth on Schedule 2.2 to the Grove Disclosure Schedule.

              For purposes of this Section 4.2 only,  any contract,  transaction
         or other event shall be deemed to be  material and to be subject to the
         terms  hereof  if  it would  result or is expected to  result in  a net
         impact on Grove's consolidated  income statement in excess of $275,000,
         or on Grove's consolidated balance sheet in excess of $275,000.

         4.3  CONDUCT OF ERP'S  BUSINESS  PENDING  MERGER.  Prior to the Company
Merger  Effective Time,  except as (i)  contemplated by this Agreement,  or (ii)
consented  to in writing by Grove,  ERP shall,  and shall  cause each of the ERP
Subsidiaries to:


                                       30
<PAGE>


              (a) use its  reasonable  efforts to preserve  intact its  business
organizations  and goodwill and keep  available the services of its officers and
employees;

              (b) confer on a regular basis with one or more  representatives of
Grove to report  operational  matters  of  materiality  which  would  have a ERP
Material Adverse Effect;

              (c)  promptly  notify  Grove of any  material  emergency  or other
material change in the condition (financial or otherwise), business, properties,
assets, liabilities,  prospects or the normal course of its businesses or in the
operation  of  its  properties,  or of  any  material  governmental  complaints,
investigations  or hearings (or  communications  indicating that the same may be
contemplated);

              (d)  promptly  deliver  to Grove  true and  correct  copies of any
report,  statement or schedule filed with the SEC subsequent to the date of this
Agreement;

              (e)  maintain  its  books  and  records  in  accordance  with GAAP
consistently applied;

              (f) duly and  timely  file all  reports,  tax  returns  and  other
documents required to be filed with federal, state, local and other authorities;
and

              (g) duly form New LLC and New LLC3, cause New LLC to duly form New
LLC2 and cause each of New LLC,  New LLC2 and New LLC3,  respectively,  to carry
out its obligations pursuant to this Agreement.

For  purposes  of this  Section  4.3  only,  an  emergency,  change,  complaint,
investigation  or hearing  shall be deemed  material if it would  reasonably  be
expected to have an ERP Material Adverse Effect.

         4.4 OTHER  ACTIONS.  Each of Grove and Grove OP on the one hand and ERP
on the other hand  shall not,  and shall use their  reasonable  best  efforts to
cause their Subsidiaries not to, take any action that would result in (i) any of
the  representations  and  warranties of such party set forth in this  Agreement
that  are  qualified  as to  materiality  becoming  untrue,  (ii)  any  of  such
representations  and warranties that are not so qualified becoming untrue in any
material  respect or (iii)  except as  contemplated  by Section  4.1, any of the
conditions to the Mergers set forth in Article 6 not being satisfied.

         4.5  COMPLIANCE  WITH THE  SECURITIES  ACT. No later than ten (10) days
prior to the Partnership Merger Effective Time, Grove shall cause to be prepared
and  delivered  to ERP a list  identifying  all persons  who, at the time of the
Grove  Shareholders  Meeting  (as  defined  in  Section  5.1  hereto),  (i)  may
reasonably  be  deemed to be  "affiliates"  of Grove or Grove OP as that term is
used in  paragraphs  (c) and (d) of Rule 145 under the  Securities  Act and (ii)
shall be entitled to receive Partnership Unit Merger  Consideration  pursuant to
the  Partnership  Merger  (the  "Affiliates").  Grove  shall use its  reasonable
efforts to cause each person who is  identified  as an Affiliate in such list to
deliver to Grove on or prior to the Partnership  Merger Effective Time a written
agreement,  in the form  previously  approved by the parties  hereto,  that such
Affiliate will not sell, pledge,  transfer or otherwise dispose of any shares of
EQR Common issued to such  Affiliate  upon exchange of ERP Units pursuant to the
ERP Agreement,  except pursuant to an effective registration statement under the
Securities Act or in compliance with Rule 145.

                                   ARTICLE 5
                                   ---------

                              ADDITIONAL COVENANTS
                              --------------------

         5.1 PREPARATION OF THE REGISTRATION  STATEMENT AND THE PROXY STATEMENT;
GROVE SHAREHOLDERS MEETING AND GROVE OP PARTNERS MEETING.

              (a)  Grove and ERP shall use  their  reasonable  best  efforts  to
prepare and file with the SEC the  Registration  Statement and Proxy  Statement,
each in form and substance  satisfactory  to each of ERP and Grove. A portion of
the  Registration  Statement  shall also  constitute  a  prospectus  of ERP with
respect to the ERP Units to be


                                       31
<PAGE>


offered pursuant to the Partnership Merger (the "Prospectus"). Each of Grove and
ERP shall  promptly  use its  reasonable  best  efforts  to (i)  respond  to any
comments  of the SEC and (ii) with  respect to ERP only,  have the  Registration
Statement  declared  effective  under  the  Securities  Act  and the  rules  and
regulations  promulgated thereunder as promptly as practicable after such filing
and to keep the  Registration  Statement  effective  as long as is  necessary to
consummate the Partnership  Merger.  ERP will use its reasonable best efforts to
cause the  Prospectus  to be mailed to the  Limited  Partners,  as  promptly  as
practicable  after the SEC has declared the  Registration  Statement  effective.
Grove will use its  reasonable  best efforts to cause the Proxy  Statement to be
mailed to Grove's  shareholders,  as promptly as  practicable  after the SEC has
completed  its review of the Proxy  Statement.  Each party will notify the other
promptly of the receipt of any  comments  from the SEC and of any request by the
SEC for  amendments or supplements  to the  Registration  Statement or the Proxy
Statement or for additional information and will supply the other with copies of
all   correspondence   (and  written   summaries  or  transcripts  of  any  oral
communication)  between  such party or any of its  representatives  and the SEC,
with  respect  to  the  Registration  Statement  or  the  Proxy  Statement.  The
respective parties will cause the Registration Statement and the Proxy Statement
to comply in all material  respects  with all  applicable  requirements  of law.
Whenever  any event  occurs which is required to be set forth in an amendment or
supplement to the Registration  Statement or the Proxy Statement,  ERP or Grove,
as the case may be,  shall  promptly  inform the other of such  occurrences  and
cooperate in filing with the SEC and/or mailing to the  shareholders of Grove or
the Limited  Partners such  amendment or  supplement  to the Proxy  Statement or
Prospectus,  as the case may be. ERP also shall take any action  required  to be
taken under any  applicable  state  securities  or "blue sky" laws in connection
with the issuance of ERP Units pursuant to the Partnership Merger, and Grove and
Grove OP shall furnish all information concerning Grove and the holders of Grove
Shares and rights to acquire Grove Shares,  or Grove OP and the Limited Partners
and the  rights  to  acquire  Grove LP  Units,  as the case may be and as may be
reasonably requested in connection with any such action.

              (b) Grove will, as soon as practicable  following the date of this
Agreement  (but in no event sooner than 20 business days  following the date the
Proxy Statement is mailed to the shareholders of Grove),  duly call, give notice
of,  convene and hold a meeting of its  shareholders  (the  "Grove  Shareholders
Meeting") for the purpose of obtaining the Grove  Shareholder  Approvals.  Grove
will,  through the Grove Board,  recommend to its shareholders  approval of this
Agreement,  the  Company  Merger  and  the  transactions  contemplated  by  this
Agreement;  provided,  that  prior  to  the  Grove  Shareholders  Meeting,  such
recommendation  may be  withdrawn,  modified or amended to the extent that, as a
result of the  commencement  or receipt of a  proposal  constituting  a Superior
Acquisition  Proposal,  the  Grove  Board  determines  in good  faith  that such
withdrawal, modification or amendment is appropriate

              (c)  Subject  to the  provisions  of  Sections  5.1(b),  the Grove
Shareholders  Meeting  shall be held not later  than 35 days  after the date the
Proxy Statement is mailed.

              (d) Grove OP will,  as soon as  practicable  following the date of
this  Agreement,  duly call,  give notice of,  convene and hold a meeting of its
partners  (the "Grove OP Partners  Meeting")  for the purpose of  obtaining  the
Grove Partner Approvals. The Grove OP Partners Meeting shall be held on the same
date as the Grove  Shareholders  Meeting.  Grove will,  through the Grove Board,
recommend  to  the  Limited   Partners   approval  of  this  Agreement  and  the
transactions  contemplated hereby; provided, that prior to the Grove OP Partners
Meeting, such recommendation may be withdrawn, modified or amended to the extent
that, as a result of the  commencement  or receipt of a proposal  constituting a
Superior  Acquisition  Proposal,  the Grove Board  determines in good faith that
such withdrawal, modification or amendment is appropriate.

              (e) If on the date for the Grove Shareholders  Meeting established
pursuant  to  Section  5.1(b)  of  this  Agreement,  Grove  has not  received  a
sufficient  number of proxies  to  approve  the  Company  Merger  (but less than
one-third of the outstanding Shares have been voted against the Company Merger),
then Grove shall adjourn its  shareholders  meetings until such date as shall be
mutually  agreed  upon by Grove and ERP,  which  date shall be not less than ten
(10) days nor more than twenty (20) days after the originally scheduled date.

              (f) In connection  with the Grove Partner  Approvals,  Grove shall
vote all Grove OP Units  beneficially  owned by Grove, and shall cause any Grove
Subsidiary  to vote  all  Grove  OP  Units  beneficially  owned  by  such  Grove
Subsidiary, in favor of this Agreement and the transactions contemplated hereby.


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<PAGE>


         5.2 ACCESS TO INFORMATION: CONFIDENTIALITY. Subject to the requirements
of confidentiality  agreements with third parties,  each of Grove and ERP shall,
and  shall  cause  each  of  the  Grove   Subsidiaries  and  ERP   Subsidiaries,
respectively,  to  afford to the other  party  and to the  officers,  employees,
accountants, counsel, financial advisors and other representatives of such other
party,  reasonable  access  during  normal  business  hours prior to the Company
Merger  Effective Time to all their  respective  properties,  books,  contracts,
commitments,  personnel and records and,  during such period,  each of Grove and
ERP shall, and shall cause each of the Grove  Subsidiaries and ERP Subsidiaries,
respectively,  to furnish promptly to the other party (a) a copy of each report,
schedule,  registration  statement  and other  document  filed by it during such
period pursuant to the  requirements of federal or state securities laws and (b)
all other information concerning its business,  properties and personnel as such
other party may reasonably request. Each of Grove and ERP shall, and shall cause
the Grove Subsidiaries and ERP Subsidiaries,  respectively,  to use commercially
reasonable  efforts  to cause its  officers,  employees,  accountants,  counsel,
financial  advisors  and  other  representatives  and  affiliates  to,  hold any
nonpublic information in confidence to the extent required by, and in accordance
with,  and will comply with the provisions of the letter  agreement  dated as of
March 13, 2000 between Grove and ERP (the "Confidentiality Agreement").

         5.3 BEST EFFORTS; NOTIFICATION.

              (a) Subject to the terms and conditions herein provided, Grove and
ERP shall:  (i) use all reasonable best efforts to cooperate with one another in
(A)  determining  which  filings  are  required  to be made prior to the Company
Merger Effective Time or Partnership Merger Effective Time, as applicable, with,
and which  consents,  approvals,  permits or  authorizations  are required to be
obtained  prior to the  Company  Merger  Effective  Time or  Partnership  Merger
Effective  Time,  from  governmental  or  regulatory  authorities  of the United
States,  the several states and foreign  jurisdictions  and any third parties in
connection  with  the  execution  and  delivery  of  this  Agreement,   and  the
consummation of the transactions  contemplated  hereby and (B) timely making all
such  filings  and timely  seeking  all such  consents,  approvals,  permits and
authorizations;  (ii) use all  reasonable  best efforts to obtain in writing any
consents required from third parties to effectuate the Mergers, such consents to
be in  form  reasonably  satisfactory  to  Grove  and  ERP;  and  (iii)  use all
reasonable best efforts to take, or cause to be taken,  all other action and do,
or cause to be done,  all  other  things  necessary,  proper or  appropriate  to
consummate and make effective the  transactions  contemplated by this Agreement.
If, at any time after the  effectiveness  of the Mergers,  any further action is
necessary or desirable  to carry out the purpose of this  Agreement,  the proper
officers and trust  managers of Grove and the general  partner of ERP shall take
all such necessary action.

              (b) Grove  shall  give  prompt  notice to ERP,  and ERP shall give
prompt  notice  to  Grove,  (i) if any  representation  or  warranty  made by it
contained in this Agreement  that is qualified as to materiality  becomes untrue
or inaccurate in any respect or any such  representation or warranty that is not
so qualified becomes untrue or inaccurate in any material respect or (ii) of the
failure by it to comply with or satisfy in any  material  respect any  covenant,
condition  or  agreement  to be  complied  with or  satisfied  by it under  this
Agreement;  provided,  however,  that  no such  notification  shall  affect  the
representations,  warranties,  covenants  or  agreements  of the  parties or the
conditions to the obligations of the parties under this Agreement.

         5.4  COSTS  OF  TRANSACTION.  In the  event  that the  Mergers  are not
consummated,  each of ERP and Grove  shall  pay  their  own  costs and  expenses
relating  to the  Mergers  and  the  other  transactions  contemplated  by  this
Agreement;  provided,  however,  that (i) all SEC filing fees in connection with
the Mergers shall be paid 50% by Grove and 50% by ERP,  (ii) all printing  costs
associated  with  the  Proxy  Statement  shall be paid by Grove  and  (iii)  all
printing costs associated with the Prospectus shall be paid by ERP. This Section
5.4 shall in no way  affect the rights and  obligations  of the  parties  hereto
under Article 7 hereof.

         5.5 PUBLIC  ANNOUNCEMENTS.  ERP and Grove will  consult with each other
before  issuing,  and provide each other the  opportunity  to review and comment
upon, any press release or other written public  statements  with respect to the
transactions  contemplated by this Agreement,  including the Mergers,  and shall
not issue any such press release or make any such written public statement prior
to such consultation, except as may be required by applicable law, court process
or by obligations pursuant to any listing agreement with any national securities
exchange.  The parties  agree that the initial  press  release to be issued with
respect to the  transactions  contemplated by this Agreement will be in the form
agreed to by the parties hereto prior to the execution of this Agreement. For


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<PAGE>


purposes of this Section 5.5,  "written  public  statements"  shall  include any
written  statement  transmitted to the NYSE,  AMEX, the shareholders of Grove or
the limited partners of ERP or Grove LP.

         5.6 TAXES.

              (a) ERP and Grove shall  cooperate in the  preparation,  execution
and  filing of all  returns,  questionnaires,  applications  or other  documents
regarding any real  property  transfer or gains,  sales,  use,  transfer,  value
added, stock transfer and stamp taxes, any transfer, recording, registration and
other fees and any similar  taxes which become  payable in  connection  with the
transactions contemplated by this Agreement (together with any related interest,
penalties or additions to tax,  "Transfer and Gains Taxes").  From and after the
Company Merger Effective Time, the Surviving  Company shall, or shall cause ERP,
as  appropriate,  to pay or cause to be paid,  without  deduction or withholding
from any amounts payable to the holders of beneficial interests in the Surviving
Company, all Transfer and Gains Taxes.

              (b) Grove will  consult  with and provide ERP the  opportunity  to
review and  comment  upon all  returns,  questionnaires,  applications  or other
documents  to be filed  after the date  hereof by Grove  with  respect  to Taxes
including,  without  limitation,  Grove's  federal,  state and local  income tax
returns, as well as the Form 5500 returns for its health and welfare benefit and
retirement  plans,  for its taxable year ended December 31, 1999  (collectively,
the "Grove Tax Returns"),  and shall not file any Grove Tax Returns  without the
prior review and comment of ERP, which shall not be unreasonably delayed.

              (c) Grove will cause each  Grove  Subsidiary  to consult  with and
provide  ERP  the   opportunity   to  review  and  comment   upon  all  returns,
questionnaires,  applications  or other  documents  to be filed  after  the date
hereof by each  respective  Grove  Subsidiary  with respect to Taxes  including,
without limitation,  each Grove Subsidiary's federal, state and local income tax
returns for its taxable year ended December 31, 1999  (collectively,  the "Grove
Subsidiary Tax Returns"), and Grove shall not cause any Grove Subsidiary to file
any Grove  Subsidiary  Tax Returns  without the prior review and comment of ERP,
which shall not be unreasonably delayed.

              (d) Prior to Closing,  Grove shall use its  reasonable  good faith
efforts to obtain a final written  closing  agreement  under Section 7121 of the
Code with  respect  to the  matters  set forth on  Schedule  5.6(d) to the Grove
Disclosure  Letter,  which closing  agreement  shall be satisfactory in form and
substance to ERP in its sole and absolute discretion (the "Closing Agreement").

         5.7  BENEFIT PLANS AND OTHER EMPLOYEE ARRANGEMENTS.

              (a) BENEFIT PLANS.  After the Company Merger  Effective  Time, all
employees of Grove or Grove OP who are  employed by ERP shall,  at the option of
ERP,  either  continue to be eligible to  participate  in an  "employee  benefit
plan," as defined in Section  3(3) of ERISA,  currently  maintained  by Grove or
Grove OP which is, at the option of ERP,  continued  by ERP,  or  alternatively,
shall be eligible to participate in the same manner as other similarly  situated
employees of ERP in any "employee  benefit  plan," as defined in Section 3(3) of
ERISA, sponsored or maintained by ERP for similarly situated employees after the
effectiveness  of the Mergers.  With respect to each such employee benefit plan,
service with Grove or any Grove Subsidiary (as applicable) shall be included for
purposes of determining  eligibility to participate and vesting (if applicable).
With respect to medical benefits  provided by ERP on and after the effectiveness
of the Mergers, (i) coverage that would otherwise be denied due to a preexisting
illness shall be provided to those  employees who had such coverage under a plan
sponsored by Grove or any Grove Subsidiary  (each, a "Prior Plan"),  (ii) unless
required  by law,  no such  employee  shall be  required  to observe any waiting
period prior to  entitlement to such benefits and (iii) each such employee shall
be credited as to previously  paid  deductible and co-payment  amounts under any
Prior Plan.

              (b) SEVERANCE  PROGRAMS.  In no event shall Grove amend, modify or
alter in any  manner  any  severance  program  or  adopt  or agree to any  other
programs,  agreements or  arrangements  which would in any way alter the Section
2.15 Payments,  as set forth in Schedule 2.15 of the Grove Disclosure Letter. No
program, arrangement or agreement of Grove, or any term of this Agreement, shall
require  ERP to  continue  the  employment  of any  employee  of Grove after the
Effective Time. As a condition to receiving a Section 2.15 Payment, each


                                       34
<PAGE>


Section  2.15  Employee and each other  terminated  employee  shall  execute and
deliver to Grove an agreement and release in the applicable  form as attached to
Schedule 2.15 to the Grove  Disclosure  Letter (a " Release").  The Section 2.15
Payments shall be satisfied  immediately  following the Company Merger Effective
Time or as otherwise set forth in Schedule 2.15 to the Grove Disclosure Letter.

              (c) OPTIONEES.

              (i) Prior to the Closing,  Grove will, through the Grove Board (or
any committee  thereof),  take all action  required (x) for,  except as provided
herein,  the  cancellation as of the Company Merger  Effective Time of all Grove
Options in consideration  for cash in an amount set forth in Section 1.8 and (y)
to  provide  that  any  Grove  Options  granted  on or about  June  19,  2000 to
non-employee  trust  managers of Grove who were  re-elected as trust managers at
Grove's 2000 annual meeting of shareholders  shall be canceled as of the Company
Merger Effective Time for no consideration.

              (ii) From and  after the date  hereof,  Grove,  through  the Grove
Board or otherwise,  will not modify any Plan or  authorize,  and Grove will not
grant,  any Grove Options,  Restricted  Share Grants or any other equity or cash
incentive grants or awards of any kind, nature or description.

              (d) WITHHOLDING. Grove shall require each employee who exercises a
Grove Option,  receives  Grove Shares  pursuant to any existing  commitment,  or
otherwise  receives  any  payment  from  Grove as a result  of the  transactions
contemplated  by this  Agreement,  to pay to Grove in cash or  Grove  Shares  an
amount  sufficient  to satisfy in full  Grove's  obligation  to  withhold  Taxes
incurred by reason of such exercise, issuance or receipt.

         5.8  INDEMNIFICATION.

              (a) From and after the Company  Merger  Effective  Time, ERP shall
provide  exculpation and  indemnification for each person who is now or has been
at any time prior to the date hereof or who becomes prior to the Company  Merger
Effective  Time,  an officer or trust  manager of Grove or any Grove  Subsidiary
(the   "Indemnified   Parties")  which  is  the  same  as  the  exculpation  and
indemnification   provided  to  the  Indemnified  Parties  by  Grove  (including
advancement  of  expenses,  if so  provided,  and  provided  that such  coverage
provided by Grove shall have at least  $5,000,000  of current  trust manager and
officer insurance with no more than a $75,000  deductible)  immediately prior to
the Company Merger  Effective Time in its Declaration of Trust,  Bylaws,  or any
Employee  Plan as in  effect  at the  close  of  business  on the  date  hereof;
provided,  that such exculpation and indemnification  covers actions on or prior
to the  Company  Merger  Effective  Time,  including,  without  limitation,  all
transactions   contemplated  by  this  Agreement.  ERP  shall  use  commercially
reasonable  efforts to obtain  and,  if  obtained,  maintain  in effect from the
Company Merger Effective Time and continuing until the sixth anniversary thereof
"run-off" trust managers and officers liability insurance with a coverage amount
and other terms and conditions  comparable to Grove's current trust managers and
officers liability  insurance policy covering the trust managers and officers of
Grove  with  respect  to  their  service  as such  prior to the  Company  Merger
Effective Time, provided,  however, that in no event shall ERP be required pay a
premium in excess of $300,000 for such  coverage  (the  "Run-Off  Policy").  ERP
shall  provide  Grove with a true and complete  copy of a binder with respect to
the Run-Off Policy at least 10 days prior to the Company Merger  Effective Time,
and  shall  use its  reasonable  best  efforts  to  provide  to Grove a true and
complete  copy of the  Run-Off  Policy as  proposed  to be  issued  prior to the
Company Merger Effective Time. The premium for such policy shall be paid in full
at the Company Merger Effective Time.

              (b) The  provisions of this Section 5.8 are intended to be for the
benefit of, and shall be  enforceable  by, each  Indemnified  Party,  his or her
heirs  and his or her  personal  representatives  and  shall be  binding  on all
successors  and  assigns  of ERP and  Grove.  ERP  agrees  to pay all  costs and
expenses  (including  fees and expenses of counsel)  that may be incurred by any
Indemnified Party or his or her heirs or his or her personal  representatives in
successfully  enforcing  the  indemnity or other  obligations  of ERP under this
Section 5.8. The provisions of this Section 5.8 shall survive the Company Merger
and are in addition  to any other  rights to which an  Indemnified  Party may be
entitled.


                                       35
<PAGE>


              (c) In the event that ERP or any of its  respective  successors or
assigns (i)  consolidates  with or merges into any other person and shall not be
the continuing or surviving company or entity of such consolidation or merger or
(ii)  transfers all or  substantially  all of its  properties  and assets to any
person,  then,  and in each such case the  successors and assigns of such entity
shall assume the  obligations  set forth in this Section 5.8, which  obligations
are  expressly  intended  to be for the  irrevocable  benefit  of,  and shall be
enforceable by, each trustee and officer covered hereby.

         5.9 DECLARATION OF DIVIDENDS AND DISTRIBUTIONS. From and after the date
of this Agreement, Grove or Grove OP shall not make any dividend or distribution
to its  shareholders  or Limited  Partners  without the prior written consent of
ERP, except for the authorization and payment of dividends or distributions with
respect  to the  Grove  Common  Shares  and  Grove LP Units  of (i)  subject  to
reduction as provided  below,  an amount per  share/unit for each full quarterly
dividend not to exceed $0.18 per  share/unit  (each a "Quarterly  Dividend") and
(ii) subject to reduction as provided below, a pro-rated  Quarterly Dividend for
the period following the end of the calendar quarter  immediately  preceding the
payment  date  for the  latest  Quarterly  Dividend  until  the  Company  Merger
Effective Time, with such dividend to be pro-rated on the basis of the number of
days in such period divided by ninety-two (92) (the "Short Dividend"),  provided
however,  that at least ten (10) days prior to the setting of any record date or
declaring of any  dividend or  distribution  permitted  pursuant to this Section
5.9, Grove shall submit to ERP a then current  estimate of the fees and expenses
of the transactions  contemplated by this Agreement, in reasonable detail and in
such  categories  so as to conform to the  detail  and  categories  set forth in
Schedule 2.30 to the Grove Disclosure Letter,  which estimate shall be certified
by the Chief  Financial  Officer  of Grove  and  subject  to  review by ERP.  In
conducting its review of such  estimate,  ERP shall have the right to verify and
examine all supporting  documentation which was utilized by Grove in determining
such estimate,  including,  without limitation,  the right to contact vendors of
Grove for the  purpose of  confirming  such  estimates.  To the extent  that any
estimated  category of fees or expenses set forth in such  estimate  exceeds the
corresponding  estimate of such category set forth on Schedule 2.30 of the Grove
Disclosure Letter, the total of such excess amounts (the "Exceeded Cost Amount")
shall be divided by the total number of Grove  Common  Shares and Grove LP Units
outstanding as of the record date for the next distribution permitted to be made
pursuant to this Section 5.9 (the "Per Share  Exceeded  Cost  Amount"),  and the
maximum dividend or distribution per share/unit payable pursuant to this Section
5.9 shall be $0.18 per  share/unit  less the Per Share Exceeded Cost Amount (or,
in the case of a Short Dividend,  the maximum amount of such Short Dividend,  as
calculated  above,  less the Per Share Exceeded Cost Amount).  In the event that
the Exceeded Cost Amount  exceeds the total  aggregate  distribution  to be made
pursuant to this Section 5.9, such amount shall be carried  forward and added to
the Exceeded Cost Amount with respect to the next  distribution  permitted under
this Section 5.9. The record and payment dates for each Quarterly Dividend shall
be the same date as the record and payment dates for the corresponding quarterly
dividend for the EQR Common  Shares,  as provided to Grove by written notice not
less than  twenty  (20) days prior to the  record  date for such  quarterly  EQR
dividend.  In the event that a dividend with respect to Grove Common Shares or a
distribution  with  respect to Grove LP Units  permitted by this Section 5.9 has
(i) a record  date prior to the Company  Merger  Effective  Time or  Partnership
Merger Effective Time, as the case may be, and (ii) has not been paid as of such
Company Merger Effective Time or Partnership  Merger Effective Time, as the case
may be, the holders of Grove Common Shares or Limited Partners shall be entitled
to receive such distribution.

         5.10 NOTICES. Each party hereto shall provide such notice to its equity
holders of the Mergers and other transactions contemplated hereby as is required
under applicable law.

         5.11  RESIGNATIONS.  On the Closing  Date,  if requested by ERP,  Grove
shall request that the trust managers,  directors and officers of Grove and each
of the Grove  Subsidiaries  to submit their  resignations  from such  positions,
effective  as of  the  Company  Merger  Effective  Time  or  Partnership  Merger
Effective Time, as requested.

         5.12  THIRD  PARTY   MANAGEMENT   AGREEMENTS  AND  OUTSIDE   MANAGEMENT
AGREEMENTS.  Grove will not,  and will not permit any Grove  Subsidiary  to, (i)
amend the Third Party Management  Agreements and Outside Management  Agreements,
(ii) renew the Third Party  Management  Agreements  except on terms which permit
its  cancellation  by Grove or the  applicable  Grove  Subsidiary on thirty days
notice without  charge,  penalty or other cost for such  cancellation,  or (iii)
renew any Outside Management Agreement.


                                       36
<PAGE>


         5.13 MODIFICATION OF ROSENTHAL  TRANSACTIONS.  Grove and Grove OP shall
(i) use its  reasonable  good faith  efforts to cause the terms of the Rosenthal
Transactions  to be modified to provide  that (A) in lieu of the issuance of any
units of preferred limited partnership  interest in Grove OP ("Preferred Units")
pursuant  to the  Rosenthal  Transactions,  one Grove LP Unit shall be issued in
substitution  for each  Preferred  Unit which  otherwise  would have been issued
pursuant to the  Rosenthal  Transactions,  (B) in the event that the Mergers are
consummated  prior to the closing of the Rosenthal  Transactions,  then upon the
closing of the Rosenthal Transactions,  in lieu of receiving Grove LP Units, the
Persons who would  otherwise be entitled to receive Grove LP Units in connection
with the  Rosenthal  Transactions  shall  instead be  entitled  to  receive,  in
substitution  for each Grove LP Unit they would have  otherwise been entitled to
receive,  either  (y)  the  Partnership  Cash  Merger  Consideration  or (z) the
Partnership Unit Merger Consideration, in each case as adjusted by Section 1.12,
at the  election  of such  Person,  which  election  shall be made  prior to the
Election  Deadline,  and  (C)  in  the  event  the  Rosenthal  Transactions  are
consummated prior to the effectiveness of the Mergers, each Grove LP Unit issued
pursuant  to the  Rosenthal  Transactions  shall be  converted  pursuant  to the
Partnership Merger in accordance with Section 1.7 or (ii) with the prior written
consent of Oak OP, which consent shall not be unreasonably  withheld,  otherwise
modify or  terminate  the  agreements  relating to the  Rosenthal  Transactions;
provided,  however,  that in the  event  that  the  Rosenthal  Transactions  are
consummated  prior to the  effectiveness  of the Mergers but  subsequent  to the
Record  Date,  each Person  entitled to receive  Grove LP Units  pursuant to the
Rosenthal Transactions shall promptly be provided a Form of Election, which must
be completed  and returned  prior to the Election  Deadline in  accordance  with
Section 1.9 if such Person  wishes to elect to receive  Partnership  Unit Merger
Consideration pursuant to the Partnership Merger.

         5.14 RETAIL SALE AGREEMENT.  Immediately  prior to, and on the date of,
the  Partnership  Merger  Effective  Time,  Grove and  Grove OP shall  cause the
transactions  contemplated  by the Retail Sale  Agreement to be  consummated  in
accordance with the terms of such agreement.

         5.15 ELECTION TO UNDERTAKE  DEFICIT  RESTORATION  OBLIGATION  UNDER ERP
AGREEMENT. In the event that a Limited Partner holding any Grove LP Units who is
subject to a deficit  restoration  obligation under Section 13.5 of the Grove OP
Agreement  elects  pursuant to Section  1.7(b) of this  Agreement to receive ERP
Units in exchange for any portion of such Limited Partner's Grove LP Units, then
such Limited  Partner shall have the right to become an "Obligated  Partner" (as
such term is defined  under the ERP  Agreement)  of ERP by  delivery  of written
notice to ERP no later than the Election  Deadline.  Such  written  notice shall
specify  the  "Restoration  Amount"  (as  such  term is  defined  under  the ERP
Agreement) for such Limited Partner,  which amount shall not exceed such Limited
Partner's  "Protected  Amount"  (as such  term is  defined  under  the  Grove OP
Agreement) as determined  immediately prior to the Partnership  Merger Effective
Time.

         5.16 TRANSFER OF GROVE LP UNITS. Grove, as general partner of Grove OP,
hereby  consents  pursuant to the Grove OP Agreement to the transfer of Grove LP
Units by New LLC  subsequent to the  Partnership  Merger  Effective  Time to any
Affiliate of EQR or ERP.

         5.17 TRANSFER OF GROVE CORP.  Shares. At the Closing,  at the option of
ERP,  Grove shall cause the owners of Grove Corp.  to transfer to such person or
persons as ERP shall designate by written notice delivered to Grove prior to the
Closing, all of the shares of Grove Corp. owned by them, constituting all of the
outstanding shares of Grove Corp., for an aggregate consideration of $1.00.


                                   ARTICLE 6
                                   ---------

                                   CONDITIONS
                                   ----------

         6.1  CONDITIONS TO EACH PARTY'S  OBLIGATION TO EFFECT THE MERGERS.  The
obligations  of each  party  to  effect  the  Mergers  shall be  subject  to the
fulfillment at or prior to the Closing Date of the following conditions:

              (a)  GROVE   APPROVALS.   This  Agreement,   the  Merger  and  the
transactions contemplated by this Agreement shall have been approved and adopted
by the Grove Approvals.


                                       37
<PAGE>


              (b) REGISTRATION STATEMENT.  The Registration Statement shall have
become  effective  under the  Securities Act and shall not be the subject of any
stop order or proceedings by the SEC seeking a stop order.

              (c) NO INJUNCTIONS OR RESTRAINTS.  No temporary restraining order,
preliminary  or  permanent  injunction  or other  order  issued  by any court of
competent  jurisdiction or other legal  restraint or prohibition  preventing the
consummation of the Mergers or any of the other transactions contemplated hereby
shall be in effect.

              (d) BLUE SKY LAWS. ERP shall have received all state securities or
"blue sky" permits and other authorizations  necessary to issue ERP Units to the
Limited Partners.

         6.2 CONDITIONS TO OBLIGATIONS OF ERP. The  obligations of ERP to effect
the Mergers and to consummate the other  transactions  contemplated  to occur on
the Closing Date are further  subject to the  following  conditions,  any one or
more of which may be waived in writing by ERP:

              (a)  REPRESENTATIONS  AND  WARRANTIES.   The  representations  and
warranties of Grove and Grove OP set forth in this  Agreement  shall be true and
correct as of the Closing  Date,  as though made on and as of the Closing  Date,
except to the extent the  representation or warranty is expressly limited by its
terms to  another  date,  and ERP  shall  have  received  a  certificate  (which
certificate   may  be   qualified  by  Knowledge  to  the  same  extent  as  the
representations  and  warranties  of Grove and Grove OP contained  herein are so
qualified) signed on behalf of Grove and Grove OP by the chief executive officer
or the chief financial officer of Grove, in such capacity,  to such effect.  For
the purposes of Section  6.2(a),  the  representations  and  warranties of Grove
shall be deemed true and correct unless the breach of such  representations  and
warranties,  in the  aggregate,  could  reasonably  be  expected to have a Grove
Material Adverse Effect,  provided,  however, that this sentence shall not apply
to any beach of Section 2.15 or Section 2.8.

              (b) PERFORMANCE OF OBLIGATIONS OF GROVE.  Grove and Grove OP shall
have performed in all material  respects all covenants and obligations  required
to be performed  by them under this  Agreement at or prior to the earlier of the
Company  Merger  Effective Time or Partnership  Merger  Effective  Time, and ERP
shall  have  received  a  certificate  signed  on  behalf  of Grove by the chief
executive officer or the chief financial officer of Grove, in such capacity,  to
such effect.

              (c) MATERIAL  ADVERSE  CHANGE.  Since March 31, 2000,  there shall
have been no Grove  Material  Adverse  Change  and ERP  shall  have  received  a
certificate of the chief executive  officer or chief financial officer of Grove,
in such capacity, certifying to such effect.

              (d) OPINION OF MARYLAND COUNSEL. ERP and Grove shall have received
the opinion of Maryland counsel reasonably satisfactory to Oak OP addressing the
matters set forth in Exhibit "C" hereto.

              (e) OPINION  RELATING TO REIT STATUS.  ERP shall have  received an
opinion,  dated as of the date of the Proxy  Statement  and the Closing Date, of
Cummings & Lockwood  reasonably  satisfactory to ERP, that,  commencing with its
taxable year ended  December 31, 1994,  (A) Grove was organized and has operated
in conformity with the requirements  for  qualification as a REIT under the Code
and (B) Grove OP has been during and since 1997 and continues to be, treated for
federal  income tax  purposes  as a  partnership,  and not as a  corporation  or
association taxable as a corporation (with customary exceptions, assumptions and
qualifications  and  based  upon  customary   representations  and  the  Closing
Agreement).

              (f) OPINION OF COUNSEL.  ERP shall have  received an opinion  from
Cummings & Lockwood or other  counsel to Grove  reasonably  satisfactory  to ERP
dated the Closing  Date in form and  substance  reasonably  satisfactory  to ERP
addressing the matters set forth in Exhibit "D" hereto.

              (g)  CONSENTS.  Except as set forth on  Schedule  6.2 to the Grove
Disclosure  Letter,  all consents and waivers  (including,  without  limitation,
waivers of rights of first  refusal) from third parties  necessary in connection
with the consummation of the  transactions  contemplated by this Agreement shall
have been obtained,


                                       38
<PAGE>


other than such consents and waivers from third parties, which, if not obtained,
would not result,  individually or in the aggregate,  in an ERP Material Adverse
Effect or a Grove Material Adverse Effect.

              (h)  CERTAIN  FEES AND  EXPENSES.  The  actual  fees and  expenses
incurred in connection  with the  transactions  contemplated  by this  Agreement
shall not exceed (i) the aggregate  estimate of all such fees and expenses,  set
forth on Schedule  2.30 to the Grove  Disclosure  Letter,  or (ii) to the extent
specifically provided on Schedule 2.30, the estimates of the specific categories
of fees and expenses, as set forth on such Schedule.

              (i) RETAIL  PROPERTY SALE. The  transactions  contemplated  by the
Retail Sale Agreement  shall have been  consummated in accordance with the terms
of such agreement.

              (j) CLOSING  AGREEMENT  AND COSTS.  Grove shall have  obtained the
Closing Agreement; provided, however, that the Closing Agreement Costs shall not
exceed $3.5 million  without the prior written consent of ERP, which consent may
be  given in  ERP's  sole  and  absolute  discretion.  As used  herein  "Closing
Agreement Costs" shall mean all Taxes,  fees (including  without  limitation any
fees for professional  services), or other costs incurred by or imposed upon any
of Grove, Grove OP, any Grove Subsidiary,  EQR, ERP or any ERP Subsidiary,  with
respect to, or as a result of,  obtaining the Closing  Agreement and the matters
to be addressed by the Closing Agreement ("Closing Agreement Costs")

         6.3  CONDITIONS TO  OBLIGATIONS  OF GROVE.  The obligation of Grove and
Grove  OP to  effect  the  Mergers  and to  consummate  the  other  transactions
contemplated  to occur on the Closing Date is further  subject to the  following
conditions, any one or more of which may be waived in writing by Grove:

              (a)  REPRESENTATIONS  AND  WARRANTIES.   The  representations  and
warranties  of ERP set forth in this  Agreement  shall be true and correct as of
the date of this  Agreement and as of the Closing Date, as though made on and as
of the  Closing  Date,  except to the extent the  representation  or warranty is
expressly  limited by its terms to another date, and Grove shall have received a
certificate  (which certificate may be qualified by Knowledge to the same extent
as the  representations and warranties of ERP contained herein are so qualified)
signed on behalf of ERP by the chief  executive  officer and the chief financial
officer of EQR to such  effect.  For the purposes of this  Section  6.3(a),  the
representations  and  warranties of ERP shall be deemed true and correct  unless
the breach of such  representations  and  warranties,  in the  aggregate,  could
reasonably be expected to have an ERP Material Adverse Effect.

              (b) PERFORMANCE OF OBLIGATIONS OF ERP. ERP shall have performed in
all material respects all covenants and obligations  required to be performed by
it under  this  Agreement  at or  prior to the  earlier  of the  Company  Merger
Effective Time or the  Partnership  Merger  Effective Time, and Grove shall have
received a  certificate  of ERP  signed on behalf of ERP by the chief  executive
officer or the chief financial officer of EQR, in such capacity, to such effect.

              (c) MATERIAL  ADVERSE  CHANGE.  Since the date of this  Agreement,
there  shall  have been no ERP  Material  Adverse  Change  and Grove  shall have
received a certificate of the chief executive officer or chief financial officer
of ERP, in such capacity, certifying to such effect.

              (d) OPINION RELATING TO REIT STATUS.  Grove shall have received an
opinion,  dated as of the date of the Proxy  Statement  and the Closing Date, of
Piper  Marbury  Rudnick  &  Wolfe,   reasonably  satisfactory  to  Grove,  that,
commencing  with its taxable year ended December 31, 1992, (A) EQR was organized
and has operated in conformity with the requirements for qualification as a REIT
under the Code and (B) ERP has been during and since 1992 and  continues  to be,
treated  for  federal  income  tax  purposes  as a  partnership,  and  not  as a
corporation or association taxable as a corporation (with customary  exceptions,
assumptions and qualifications and based upon customary representations).

              (e) OPINION OF COUNSEL.  Grove shall have received an opinion from
Piper Marbury Rudnick & Wolfe or other counsel to ERP reasonably satisfactory to
Grove dated the Closing Date in form and


                                       39
<PAGE>


substance  reasonably  satisfactory to Grove addressing the matters set forth in
Exhibit "E" hereto dated the Closing Date.

              (f)  CONSENTS.  All  consents  and  waivers  (including,   without
limitation,  waivers or rights of first refusal) from third parties necessary in
connection with the consummation of the transactions  contemplated  hereby shall
have been  obtained,  other than such  consents and waivers from third  parties,
which, if not obtained,  would not result,  individually or in the aggregate, in
an ERP Material Adverse Effect or a Grove Material Adverse Effect.

              (g) CLOSING AGREEMENT. Grove shall have obtained, and delivered to
ERP, the Closing  Agreement.  Under no circumstance  shall Grove be obligated to
obtain the Closing  Agreement  if the Closing  Agreement  Costs are in excess of
$3.5 million, unless ERP agrees, in its sole and absolute discretion, to pay the
amount of Closing Agreement Costs in excess of $3.5 million.

                                   ARTICLE 7
                                   ---------

                        TERMINATION, AMENDMENT AND WAIVER
                        ---------------------------------

         7.1 TERMINATION.  This Agreement may be terminated at any time prior to
the  acceptance  of the  Partnership  Certificate  of  Merger  by  the  Delaware
Secretary, whether before or after the Grove Approvals are obtained:

              (a) by mutual written  consent duly authorized by both the general
partner of ERP and the Grove Board;

              (b)  by  ERP,  upon a  breach  of  any  representation,  warranty,
covenant,  obligation or agreement on the part of Grove or Grove OP set forth in
this  Agreement,  in either case such that the  conditions  set forth in Section
6.2(a)  or  Section  6.2(b),  as the case may be,  would be  incapable  of being
satisfied by March 31, 2001 (or as otherwise extended);

              (c) by  Grove,  upon a  breach  of any  representation,  warranty,
covenant obligation or agreement on the part of ERP set forth in this Agreement,
in either case such that the  conditions  set forth in Section 6.3(a) or Section
6.3(b),  as the case may be, would be incapable of being  satisfied by March 31,
2001 (or as otherwise extended);

              (d) by either ERP or Grove,  if any judgment,  injunction,  order,
decree or action by any Governmental  Entity of competent  authority  preventing
the  consummation of either the Partnership  Merger or Company Merger shall have
become final and nonappealable;

              (e) by either  ERP or Grove,  if the  Mergers  shall not have been
consummated  before March 31, 2001;  provided,  that in the case of  termination
pursuant to this Section 7.1(e),  the terminating  party shall not have breached
in any material respect its obligations  under this Agreement in any manner that
shall have proximately  contributed to the occurrence of the failure referred to
in this Section and,  provided  further,  that (i) if the Mergers shall not have
been consummated  solely due to the failure to receive any required lender,  HUD
or MHFA  consents  (as listed on Schedule 2.5 of the Grove  Disclosure  Letter),
March 31,  2001 shall be  automatically  extended  to May 31,  2001 and (ii) any
termination of this Agreement  resulting solely by reason of the failure to meet
the condition set forth in (i) above shall be pursuant to this Section 7.1(e);

              (f) by either  ERP or Grove if,  upon a vote at a duly held  Grove
Shareholders Meeting or any adjournment thereof, the Grove Shareholder Approvals
shall not have been obtained as contemplated by Section 5.1;

              (g) by either ERP or Grove if the Grove  Partner  Approvals  shall
not have been obtained as contemplated by Section 5.1;


                                       40
<PAGE>


              (h) by Grove,  if prior to the Grove  Shareholders  Meeting or the
Grove OP Partners Meeting,  the Grove Board shall have withdrawn or modified its
approval or  recommendation of the Mergers or this Agreement in connection with,
or approved or recommended, a Superior Acquisition Proposal; and

              (i) by ERP if (i) prior to the Grove  Shareholders  Meeting or the
Grove OP Partners  Meeting,  the Grove Board shall have withdrawn or modified in
any manner adverse to ERP its approval or  recommendation of the Mergers or this
Agreement  in  connection  with,  or  approved  or  recommended,   any  Superior
Acquisition  Proposal,  or (ii)  Grove  shall  have  entered  into a  definitive
agreement with respect to any Acquisition Proposal.

         7.2  CERTAIN FEES AND EXPENSES.

              (a) If this Agreement  shall be terminated (i) pursuant to Section
7.1(h) or 7.1(i),  then Grove will pay ERP  (provided  Grove was not entitled to
terminate  this  Agreement  pursuant  to  Section  7.1(c)  at the  time  of such
termination)  a fee  equal  to the  Break-Up  Fee (as  defined  below),  or (ii)
pursuant to Section 7.1(b),  7.1(f) or 7.1(g), then Grove will pay ERP (provided
Grove was not entitled to terminate this Agreement pursuant to Section 7.1(c) at
the time of such  termination)  an amount  equal to the  Expense Fee (as defined
below).  If this  Agreement  shall be  terminated  by ERP or Grove  pursuant  to
Section 7.1(e) and Grove has not, at the time of such termination,  (i) obtained
and  delivered  to ERP the Closing  Agreement  in  satisfaction  of both Section
6.2(j)  and  Section  6.3(g)  or (ii)  caused to be  delivered  to ERP the legal
opinion referenced in Section 6.2(e), then Grove will pay ERP an amount equal to
the  Expense  Fee. If this  Agreement  shall be  terminated  pursuant to Section
7.1(c), then ERP will pay Grove (provided ERP was not entitled to terminate this
Agreement pursuant to Section 7.1(b) at the time of such termination), an amount
equal to the Expense  Fee. If the Merger is not  consummated  (other than due to
the termination of this Agreement  pursuant to Section 7.1(a),  7.1(c) or 7.1(e)
(excluding  any  termination  pursuant to Section  7.1(e) with  respect to which
Grove  is  obligated  to pay  ERP  the  Expense  Fee)),  and at the  time of the
termination  of this  Agreement an  Acquisition  Proposal  has been  received by
Grove,  and either prior to the  termination  of this Agreement or within twelve
(12) months  thereafter  Grove or any Grove  Subsidiary  enters into any written
Acquisition  Proposal  which is  subsequently  consummated  (whether or not such
Acquisition Proposal is the same Acquisition Proposal which had been received at
the  time of the  termination  of this  Agreement),  then  Grove  shall  pay the
Break-Up Fee to ERP, provided, however, that for purposes of this sentence only,
(x)  "Acquisition  Proposal"  shall not include a sale of Grove  Properties to a
single purchaser or related group of purchasers for a Purchase Price (as defined
below)  equal to or in excess of $158.6  million (an "Exempt  Sale") and (y) ERP
shall have a right of first  offer for a period of thirty  days (but no right of
first refusal) with respect to the Grove Properties  subject to the Exempt Sale.
EQR shall  communicate  its offer with respect to a proposed  Exempt Sale within
thirty  days of its  receipt of notice  that (i) Grove  desires to sell  certain
Grove Properties which sale, if consummated, would constitute an Exempt Sale (an
"Offer to  Sell")  or (ii)  Grove has  received  a bona fide  offer to  purchase
certain Grove Properties which sale, if consummated,  would constitute an Exempt
Sale (an "Offer to Purchase").  Grove shall provide notice to ERP of an Offer to
Sell or Offer to Purchase as soon as practicable  (but in all cases within three
(3) days) following its decision to undertake an Offer to Sell or its receipt of
an Offer to Purchase,  as the case may be. In the case of an Offer to Sell,  (i)
if Grove does not accept ERP's offer with respect to such proposed  Exempt Sale,
Grove shall be prohibited from  consummating  such proposed Exempt Sale with any
other  Person or Persons at a price or on other terms equal to or less than that
offered by ERP and (ii) in the event ERP does not make an offer with  respect to
such proposed Exempt Sale within the time period prescribed herein,  Grove shall
be free to consummate such proposed  Exempt Sale with any Person or Persons.  In
the case of an Offer  to  Purchase,  (i) if ERP's  offer  with  respect  to such
proposed  Exempt  Sale  shall  (x)  equal or  exceed  the  value of the Offer to
Purchase and (y) contain substantially equivalent terms in other respects, Grove
shall be bound to consummate  the Exempt Sale with ERP as soon as practicable in
accordance  with such offer,  (ii) EQR shall have the right to  consummate  such
proposed Exempt Sale with Grove on substantially  the same terms as the Offer to
Purchase  and (iii) in the event that ERP makes an offer  which is  declined  by
Grove,  Grove must  consummate the Exempt Sale with the Person or Persons making
the Offer to Purchase,  on better terms than the declined ERP offer,  within six
months of Grove's  refusal of such ERP offer.  For  purposes of this Section 7.2
"Purchase Price" shall include the value of the consideration paid for the Grove
Properties,  including the value of any direct or indirect debt assumed, retired
or released in  connection  with the Exempt Sale.  Any amounts to be paid by the
purchaser  contingent upon future events, if any, shall be estimated in a manner
to be mutually  agreed  upon by the  parties  hereto.  All  communications  with
respect to an Exempt Sale shall be in accordance with Section 8.2.


                                       41
<PAGE>


              (b) The  payment of the  Break-Up  Fee shall be  compensation  and
liquidated  damages  for the loss  suffered by ERP as a result of the failure of
the Mergers to be consummated and to avoid the difficulty of determining damages
under the  circumstances and neither party shall have any other liability to the
other after the payment of the  Break-Up  Fee. The Break-Up Fee shall be paid by
Grove to ERP,  or the  Expense Fee shall be paid by Grove to ERP or ERP to Grove
(as applicable),  in immediately  available funds within fifteen (15) days after
the  date of the  event  giving  rise to the  obligation  to make  such  payment
occurred.

              (c) As used in this  Agreement,  "Break-Up Fee" shall be an amount
equal to the lesser of (i)  $8,500,000  plus the Expense Fee (the "Base Amount")
and  (ii) the sum of (A) the  maximum  amount  that  can be paid to ERP  without
causing it to fail to meet the requirements of Sections 856(c)(2) and (3) of the
Code  determined  as if the  payment of such  amount did not  constitute  income
described  in  Sections   856(c)(2)(A)-(H)  and  856(c)(3)(A)-(I)  of  the  Code
("Qualifying Income"), as determined by independent  accountants to ERP, and (B)
in the event ERP receives a letter from outside  counsel (the  "Break-Up Fee Tax
Opinion")  indicating  that ERP has  received a ruling from the IRS holding that
ERP's receipt of the Base Amount would either  constitute  Qualifying  Income or
would be excluded from gross income within the meaning of Sections 856(c)(2) and
(3) of the Code (the  "REIT  Requirements")  or that the  receipt  by ERP of the
excess of the Base Amount over the amount  payable in clause (A)  following  the
receipt  of and  pursuant  to such  ruling  would not be  deemed  constructively
received prior thereto, the Base Amount less the amount payable under clause (A)
above.  In the event that ERP determines,  in its absolute and sole  discretion,
that it is not able to  receive  the full Base  Amount,  Grove  shall  place the
unpaid amount in escrow and shall not release any portion  thereof to ERP unless
and until Grove receives any one or  combination of the following:  (i) a letter
from ERP's  independent  accountants  indicating  the maximum amount that can be
paid at  that  time  to ERP  without  causing  ERP to  fail  to  meet  the  REIT
Requirements or (ii) a Break-Up Fee Tax Opinion,  in which event Grove shall pay
to ERP the lesser of the unpaid Base Amount or the maximum  amount stated in the
letter referred to in (i) above. Grove's obligation to pay any unpaid portion of
the Break-Up Fee shall  terminate  three years from the date of this  Agreement.
The "Expense Fee" payable to ERP or Grove, as the case may be (the "Recipient"),
shall be an amount equal to the least of (i)  $2,000,000,  (ii) the  Recipient's
documented out-of-pocket expenses incurred in connection with this Agreement and
the  transactions  contemplated  hereby  (including,   without  limitation,  all
attorneys',  accountants'  and investment  bankers' fees and expenses) and (iii)
the sum of (A) the  maximum  amount  that can be paid to the  Recipient  without
causing it to fail to meet the requirements of Sections 856(c)(2) and (3) of the
Code  determined as if the payment of such amount did not constitute  Qualifying
Income,  as determined by independent  accountants to the Recipient,  and (B) in
the event the Recipient  receives a Break-Up Fee Tax Opinion indicating that the
Recipient  has  received  a ruling  from the IRS  holding  that the  Recipient's
receipt of the Expense Fee would either constitute Qualifying Income or would be
excluded from gross income within the meaning of the REIT  Requirements  or that
receipt  by the  Recipient  of the  excess of the  Expense  Fee over the  amount
payable  under clause (A)  following  the receipt of and pursuant to such ruling
would not be deemed constructively  received prior thereto, the Expense Fee less
the amount  payable  under clause (A) above.  In the event that the Recipient is
not able to receive the full  Expense  Fee,  the Payor (as defined  below) shall
place the unpaid  amount in escrow and shall not release any portion  thereof to
the Recipient  unless and until the Payor receives any one or combination of the
following:  (i) a letter from the Recipient's independent accountants indicating
the  maximum  amount  that  can be paid at that  time to the  Recipient  without
causing the Recipient to fail to meet the REIT  Requirements  or (ii) a Break-Up
Fee Tax Opinion,  in which event the Payor shall pay to the Recipient the lesser
of the unpaid Expense Fee or the maximum amount stated in the letter referred to
in (i) above.  The obligation of ERP or Grove, as applicable  ("Payor"),  to pay
any unpaid portion of the Expense Fee shall  terminate three years from the date
of this Agreement.

         7.3  EFFECT  OF  TERMINATION.  In the  event  of  termination  of  this
Agreement  by either  Grove or ERP as provided in Section  7.1,  this  Agreement
shall  forthwith  become  void and have no  effect,  without  any  liability  or
obligation  on the part of ERP,  Grove or Grove OP, other than the last sentence
of Section 5.2,  Section 7.2,  this Section 7.3 and Article 8; provided that (a)
if this Agreement is terminated by ERP pursuant to Section  7.1(b),  Grove shall
not be entitled to any of the benefits of Section 7.2, or (b) if this  Agreement
is terminated by Grove pursuant to Section 7.1(c),  ERP shall not be entitled to
any of the benefits of Section 7.2.

         7.4 AMENDMENT.  This Agreement may be amended by the parties in writing
by action of the  general  partner of ERP and the Grove Board at any time before
or after the Grove Approvals are obtained and prior to the


                                       42
<PAGE>


filing of the Company  Articles of Merger or Partnership  Certificate of Merger;
provided,  however,  that,  after  the Grove  Approvals  are  obtained,  no such
amendment,  modification or supplement shall be made which changes the amount or
type of consideration to be received by the shareholders of Grove or partners of
Grove OP or which by law requires the further  approval of the  shareholders  of
Grove or partners of Grove OP without obtaining such further approval.

              7.5  EXTENSION;  WAIVER.  At any time prior to the  earlier of the
Company Merger Effective Time or Partnership  Merger Effective Time, the parties
may (a) extend the time for the  performance of any of the  obligations or other
acts of the other party, (b) waive any inaccuracies in the  representations  and
warranties  of the other party  contained  in this  Agreement or in any document
delivered  pursuant to this  Agreement  or (c) subject to the proviso of Section
7.4,  waive  compliance  with any of the  agreements  or conditions of the other
party contained in this  Agreement.  Any agreement on the part of a party to any
such  extension or waiver shall be valid only if set forth in an  instrument  in
writing  signed  on  behalf  of such  party.  The  failure  of any party to this
Agreement  to assert any of its rights under this  Agreement or otherwise  shall
not constitute a waiver of those rights.

                                    ARTICLE 8
                                    ---------

                               GENERAL PROVISIONS
                               ------------------

              8.1 NONSURVIVAL OF  REPRESENTATIONS  AND  WARRANTIES.  None of the
representations and warranties in this Agreement or in any instrument  delivered
pursuant to this Agreement solely to confirm the  representations and warranties
in this Agreement shall survive the Company Merger Effective Time or Partnership
Merger  Effective Time, as the case may be. This Section 8.1 shall not limit any
covenant or agreement of the parties which by its terms contemplates performance
after the Effective Times.

              8.2 NOTICES.  All  notices,  requests,  claims,  demands and other
communications  under this Agreement  shall be in writing and shall be delivered
personally,  sent by  overnight  courier  (providing  proof of  delivery) to the
parties or sent by telecopy  (providing  confirmation  of  transmission)  at the
following  addresses or telecopy  numbers (or at such other  address or telecopy
number for a party as shall be specified by like notice):

    (a)   if to ERP, to:                 ERP Operating Limited Partnership
                                         Two North Riverside Plaza, Suite 400
                                         Chicago, Illinois  60606
                                         Attention:      Bruce C. Strohm
                                         Fax No.:        (312) 454-0039

          with a copy to:                Piper Marbury Rudnick & Wolfe
                                         203 North LaSalle Street, Suite 1800
                                         Chicago, Illinois 60601-1293
                                         Attention:  Errol R. Halperin, Esq.
                                         Fax No.  (312) 236-7516

    (b)   if to Grove or Grove OP, to:   Grove Property Trust
                                         598 Asylum Avenue
                                         Hartford, Connecticut 06105
                                         Attention:      Joseph R. LaBrosse
                                         Fax No.:        (860) 527-0401

          with a copy to:                Cummings & Lockwood
                                         Four Stamford Plaza
                                         Stamford, Connecticut 06904
                                         Attention:      Michael J. Hinton, Esq.
                                         Fax No.:        (203) 351-4535


                                       43
<PAGE>


All notices shall be deemed given only when actually received.

         8.3  INTERPRETATION.  All  references  made  herein to any party  shall
include  any  predecessor  to  such  party.  When a  reference  is  made in this
Agreement to a Section,  such reference  shall be to a Section of this Agreement
unless otherwise indicated. The table of contents and headings contained in this
Agreement  are for  reference  purposes only and shall not affect in any way the
meaning or  interpretation  of this  Agreement.  Whenever  the words  "include",
"includes" or "including" are used in this Agreement, they shall be deemed to be
followed by the words "without limitation."

         8.4  COUNTERPARTS.  This  Agreement  may be  executed  in  one or  more
counterparts,  all of which shall be considered  one and the same  agreement and
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other party.

         8.5 ENTIRE AGREEMENT; NO THIRD-PARTY BENEFICIARIES. This Agreement, the
Grove  Disclosure  Letter,  the  ERP  Disclosure  Letter,  the   Confidentiality
Agreement and the other agreements  entered into in connection with the Mergers,
including,  without  limitation,  the executed  documents the forms of which are
included in the Grove Disclosure Letter or are otherwise  specifically  referred
to  herein,  (a)  constitute  the  entire  agreement  and  supersede  all  prior
agreements and  understandings,  both written and oral, between the parties with
respect to the subject  matter of this  Agreement  and (b) except as provided in
Section  5.7 and Section 5.8 ("Third  Party  Provisions"),  are not  intended to
confer upon any person other than the parties hereto any rights or remedies. The
Third Party Provisions may be enforced by the beneficiaries thereof or on behalf
of the  beneficiaries  thereof by the trust managers of Grove who had been trust
managers of Grove prior to the Company Merger Effective Time.

         8.6 GOVERNING LAW. THIS  AGREEMENT  SHALL BE GOVERNED BY, AND CONSTRUED
IN ACCORDANCE  WITH,  THE LAWS OF THE STATE OF MARYLAND,  REGARDLESS OF THE LAWS
THAT MIGHT  OTHERWISE  GOVERN UNDER  APPLICABLE  PRINCIPLES  OF CONFLICT OF LAWS
THEREOF.

         8.7 ASSIGNMENT. Neither this Agreement nor any of the rights, interests
or obligations under this Agreement shall be assigned or delegated,  in whole or
in part,  by operation  of law or  otherwise  by any of the parties  without the
prior written consent of the other parties.  Subject to the preceding  sentence,
this Agreement will be binding upon, inure to the benefit of, and be enforceable
by, the parties and their respective successors and assigns.

         8.8 ENFORCEMENT.  The parties agree that irreparable damage would occur
in the event that any of the  provisions of this Agreement were not performed in
accordance  with  their  specific  terms  or  were  otherwise  breached.  It  is
accordingly  agreed that the  parties  shall be  entitled  to an  injunction  or
injunctions to prevent  breaches of this  Agreement and to enforce  specifically
the terms and  provisions  of this  Agreement in any court of the United  States
located  in  the  State  of  Illinois  or  Connecticut  or in  any  Illinois  or
Connecticut  State  court  located in  Illinois  or  Connecticut,  this being in
addition to any other remedy to which they are entitled at law or in equity.  In
addition,  each of the parties  hereto (a)  consents to submit  itself  (without
making such  submission  exclusive) to the personal  jurisdiction of any federal
court  located  in the State of  Illinois  or  Connecticut  or any  Illinois  or
Connecticut State court in the event any dispute arises out of this Agreement or
any of the  transactions  contemplated  by this Agreement and (b) agrees that it
will not attempt to deny or defeat such personal jurisdiction by motion or other
request for leave from any such court.

         8.9  SEVERABILITY. Any  term or provision  of this  Agreement  which is
invalid or unenforceable in any jurisdiction shall, as to that jurisdiction,  be
ineffective  to the  extent  of  such  invalidity  or  unenforceability  without
rendering  invalid or  unenforceable  the remaining terms and provisions of this
Agreement or affecting  the  validity or  enforceability  of any of the terms or
provisions of this Agreement in any other jurisdiction. If any provision of this
Agreement is so broad as to be unenforceable, the provision shall be interpreted
to be only so broad as is enforceable.


                                       44
<PAGE>


         8.10  NON-RECOURSE TO TRUSTEES, TRUST MANAGERS AND OFFICERS.

              (a) This  Agreement and all documents,  certificates,  agreements,
understandings  and  arrangements  relating  hereto  have been  entered  into or
executed on behalf of Grove (both in its individual capacity and in its capacity
as general  partner of Grove OP) by the  undersigned  in his capacity as a trust
manager or officer of Grove,  which has been  formed as a Maryland  real  estate
investment trust pursuant to its Third Amended and Restated Declaration of Trust
dated as of March 14, 1997, as amended,  and not  individually,  and neither the
trust managers,  officers nor shareholders of Grove shall be personally bound or
have any personal  liability  hereunder.  ERP shall look solely to the assets of
Grove for  satisfaction of any liability of Grove with respect to this Agreement
and any other  agreements to which it is a party.  ERP will not seek recourse or
commence  any action  against any of the  shareholders  of Grove or any of their
personal  assets,  and will not commence any action for money judgments  against
any of the trust  managers or officers of Grove or seek recourse  against any of
their personal assets, for the performance or payment of any obligation of Grove
hereunder or thereunder.

              (b) This  Agreement and all documents,  certificates,  agreements,
understandings  and  arrangements  relating  hereto  have been  entered  into or
executed  on behalf of ERP by the  undersigned  in his  capacity as a trustee or
officer of EQR,  the sole  general  partner of ERP,  which has been  formed as a
Maryland  real estate  investment  trust  pursuant  to an Amended  and  Restated
Declaration  of Trust of EQR  dated as of  November  2,  1992,  as  amended  and
restated,  and not individually,  and neither the trustees,  officers nor equity
holders of EQR or ERP shall be personally  bound or have any personal  liability
hereunder.  Grove shall look solely to the assets of ERP for satisfaction of any
liability  of ERP with respect to this  Agreement  and any other  agreements  to
which it is a party. Grove will not seek recourse or commence any action against
any of the equity holders of ERP or any of their personal  assets,  and will not
commence any action for money judgments  against any of the trustees or officers
of  EQR or  seek  recourse  against  any  of  their  personal  assets,  for  the
performance or payment of any obligation of ERP hereunder or thereunder.


                                       45
<PAGE>


IN WITNESS  WHEREOF,  ERP,  Grove and Grove OP have caused this  Agreement to be
signed by their respective officers thereunto duly authorized all as of the date
first written above.

                                     ERP OPERATING LIMITED PARTNERSHIP,
                                     an Illinois limited partnership

                                     By:  Equity Residential Properties Trust
                                          Its:  General Partner

                                     By:  /s/ BRUCE C. STROHM
                                          ----------------------------------
                                          Name:   Bruce C. Strohm
                                                  --------------------------
                                          Title:  Executive Vice President
                                                  --------------------------


                                     GROVE PROPERTY TRUST, a Maryland
                                     real estate investment trust

                                     By:  /s/ JOSEPH R. LABROSSE
                                          ----------------------------------
                                          Name:   Joseph R. LaBrosse
                                                  --------------------------
                                          Title:  Chief Financial Officer
                                                  --------------------------


                                     GROVE OPERATING, L.P., a Delaware
                                     limited partnership

                                     By:  Grove Property Trust
                                     Its: General Partner

                                     By:  /s/ JOSEPH R. LABROSSE
                                          ----------------------------------
                                          Name:   Joseph R. LaBrosse
                                                  --------------------------
                                          Title:  Chief Financial Officer
                                                  --------------------------


                                       46


<PAGE>


                                                                      APPENDIX B


July 14, 2000

The Board of Trust Managers
Grove Property Trust
598 Asylum Avenue
Hartford, CT  06105

Dear Trust Managers:

We understand  that Grove  Property Trust (the  "Company") is exploring  whether
there  might be  mutually  acceptable  terms on  which  it  would  enter  into a
transaction with Equity  Residential  Properties Trust ("EQR") pursuant to which
all of the Company's outstanding common shares would be exchanged for cash in an
all cash merger and all of the Operating  Partnership  Units in Grove Operating,
L.P.  ("Grove OP Units")  would,  at the option of the holders  thereof,  at the
closing of the  merger,  either be  converted  into  0.3696  ($17.00  divided by
$46.00) of an Operating  Partnership Unit in ERP Operating  Limited  Partnership
("EQR OP Units") on a tax free basis or  entitled  to $17.00 cash for each Grove
OP Unit  subject in each case to  downward  adjustment  not to exceed  $0.29 per
share or Grove OP Unit. Such exchange of cash for the Company's common stock and
cash or EQR OP Units  for the Grove OP Units is  referred  to herein as the "EQR
Transaction."  The  terms  of the EQR  Transaction  which  are  currently  under
consideration  by  the  Company  and  EQR  are  more  specifically  outlined  in
attachments  to a letter  agreement  between  the Company and EQR dated June 12,
2000 (the "Letter Agreement").

We further  understand  that prior to the  closing of the EQR  Transaction,  the
Company would sell or otherwise transfer its four retail properties, the "Grove"
name and  symbol  trademark  and  related  assets and  liabilities  to a private
limited liability company owned by Joseph LaBrosse,  and Damon, Brian and Edmond
Navarro,  for  a  gross  purchase   price/value  equal  to  $21,650,000,   (such
sale/transfer is referred to herein as the "Retail Exchange"). The consideration
for the Retail Exchange would consist of the assumption of all related  property
indebtedness,  plus the  exchange of all Grove OP Units  owned by such  persons,
valued at $17 per Grove OP Unit  subject to  downward  adjustment  not to exceed
$0.29 per Grove OP Unit,  with excess  value  credited  in cash in such  limited
liability company.

In  connection  with  the  EQR  Transaction,  the  Company  will  incur  certain
transaction  costs,  including:  (a) approximately $5 million of payments to the
Company's executive  management to provide for expectations  relating to certain
share  purchase  transactions  and related  bonuses  (the  "Management  Contract
Buyout"),  (however; it is our understanding that such executive management will
waive their  rights to  approximately  $22  million  under  existing  employment
contracts  which would  otherwise  become payable upon  consummation  of the EQR
Transaction),  (b) approximately $4 million of severance to all of the Company's
corporate  employees (the  "Severance  Package"),  and (c) certain other closing
costs and transaction  costs which,  when combined with the Management  Contract
Buyout and Severance Package


<PAGE>

The Board of Trust Managers
Grove Property Trust
July 14, 2000                                                              - 2 -


total  approximately  $20  million.  Further,  we  understand  that  there is an
agreement  between the Company and EQR which will provide that if Grove's actual
transaction costs associated with the EQR Transaction  exceed  approximately $20
million the operation of a covenant in such agreement  would prohibit Grove from
paying,  or would reduce the  permitted  amount of,  dividends or  distributions
which would otherwise be permitted.

The EQR Transaction,  the Retail  Exchange,  and the  aforementioned  payment of
transaction  costs,  as well as  other  related  transactions  described  in the
attachments to the Letter Agreement or otherwise disclosed to us are referred to
collectively herein as the "Transaction."

You have  requested  our  opinion  (the  "Opinion")  as to the matters set forth
below. The Opinion does not address the Company's  underlying  business decision
to effect the  Transaction.  We have not been requested to, and did not, solicit
third party indications of interest in acquiring all or any part of the Company.
Furthermore,  at your request, we have not negotiated the Transaction or advised
you with respect to alternatives to it.

In  connection  with  this  Opinion,  we have made such  reviews,  analyses  and
inquiries as we have deemed necessary and appropriate  under the  circumstances.
Among other things, we have:

1.   met with the Company's  senior  management  and the  Company's  advisors to
     discuss  the  Transaction,  the  operations,  financial  condition,  future
     prospects and performance of the Company;

2.   reviewed the Company's  annual reports to shareholders and on Form 10-K for
     the fiscal years ended December 31, 1999 and quarterly reports on Form 10-Q
     for the quarter ended March 31, 2000;

3.   reviewed  forecasts and  projections  prepared by the Company's  management
     with  respect to the Company for the years ended  December 31, 2000 through
     December 31, 2001;

4.   reviewed preliminary  appraisal indications as prepared by Italia and Lemp,
     Inc. for the following retail properties:

               Cornerblock,
               Longmeadow Shops
               The Wharf, and
               Freeport Shops

5.   reviewed copies of the following agreements:

               a draft copy of the  Exclusivity  Agreement  dated June
               12, 2000; and the Retail Transaction  Structure memo as
               prepared by Cummings & Lockwood

6.   conducted site visits to certain of the properties owned by the Company;

7.   reviewed  Minutes  of the  Meeting  on May 25,  2000 of the  Board of Trust
     Managers of the Company;

8.   reviewed publicly  available  information on companies we deemed comparable
     to the Company; and

9.   conducted  such other  analyses,  studies and  investigations  as we deemed
     appropriate  under the  circumstances  for rendering the opinion  expressed
     herein.


<PAGE>

The Board of Trust Managers
Grove Property Trust
July 14, 2000                                                              - 3 -


We have relied upon and  assumed,  without  independent  verification,  that the
financial forecasts and projections provided to us have been reasonably prepared
and reflect  the best  currently  available  estimates  of the future  financial
results and condition of the Company, and that there has been no material change
in the assets,  financial condition,  business or prospects of the Company since
the date of the most recent financial statements made available to us.

We  have  not  independently  verified  the  accuracy  and  completeness  of the
information  supplied  to us with  respect to the  Company and do not assume any
responsibility with respect to it. We have not made any independent appraisal of
any of the properties or assets of the Company. Our opinion is necessarily based
on  business,  economic,  market and other  conditions  as they exist and can be
evaluated by us at the date of this letter.

Based upon the foregoing,  and in reliance  thereon,  it is our opinion that (a)
the consideration to be received by Company's stockholders and the Grove OP Unit
holders in connection  with the  Transaction is fair,  from a financial point of
view, and (b) the consideration to be received by the Company in connection with
the Retail  Exchange in connection  with the  Transaction is fair to the Company
from a financial point of view.

HOULIHAN LOKEY HOWARD & ZUKIN FINANCIAL ADVISORS, INC.



<PAGE>



                                                                      APPENDIX C


                      REDEMPTION AND DISTRIBUTION AGREEMENT

         This REDEMPTION AND DISTRIBUTION  AGREEMENT is made and entered into as
of the 17th day of July,  2000,  by and among Damon D. Navarro  ("D.  Navarro"),
Brian D. Navarro ("B.  Navarro"),  Edmund F. Navarro ("E.  Navarro"),  Joseph R.
LaBrosse  ("LaBrosse"),  GROVE REALTY, LLC, a Delaware limited liability company
("Investor LLC"), and GROVE OPERATING, L.P., a Delaware limited partnership (the
"Partnership").  D. Navarro,  B. Navarro, E. Navarro and La Brosse are sometimes
referred  to herein  individually  as an  "Investor,"  and  collectively  as the
"Investors."

                                R E C I T A L S:

         A. The  Partnership  has been  established  and  continued in existence
pursuant to a certain Agreement of Limited Partnership of Grove Operating,  L.P.
dated as of March 10, 1997, as amended (the "Partnership Agreement").

         B. Each of the Investors, as a limited partner in the Partnership, owns
the number of Partnership Units set forth beside said Investor's name on Exhibit
A attached hereto and by this reference made a part hereof.

         C.  Pursuant  to a  certain  Agreement  and Plan of Merger of even date
herewith  (the  "Merger  Agreement"),  by  and  between  ERP  Operating  Limited
Partnership,  an Illinois  limited  partnership  ("ERP OP"), the Partnership and
Grove Property Trust, a Maryland real estate  investment trust ("Grove"),  it is
contemplated  that, among other things, a limited  liability company referred to
as "LLC 3" in the Merger Agreement will merge with and into the Partnership (the
"Partnership Merger"), with the Partnership as the surviving entity. Capitalized
terms  that are not  defined  herein  shall have the  meanings  set forth in the
Partnership Agreement or the Merger Agreement, as the case may be.

         D. The Investors,  collectively, own all of the membership interests in
Investor  LLC.  The  Investors  desire to  assign  and  contribute  all of their
Partnership Units to Investor LLC prior to the Partnership  Merger, and Investor
LLC desires to accept said contribution and assignment, and to gain admission as
a limited partner in the Partnership in the place and stead of the Investors.

         E.  Following  its admission as a limited  partner in the  Partnership,
Investor LLC desires,  prior to the  Partnership  Merger,  to withdraw  from the
Partnership  and  surrender  for  redemption  its  Partnership  Units,  and  the
Partnership desires to redeem such Partnership Units, all on the terms set forth
herein. The transactions described herein,  including the Agreed Retail Property
Value and the mechanism for determining the Cash Redemption  Payment,  have been
authorized  by (i) the Board of Trust  Managers  of Grove,  and (ii) the  Merger
Oversight Committee of the Board of Trust Managers of Grove.

         NOW, THEREFORE, the parties hereto agree as follows:

                                   ARTICLE 1
                                   ---------

                                   DEFINITIONS
                                   -----------

         1.1  DEFINITIONS.  As used in this Agreement,  the following terms have
the  following  meanings  (such  meanings to be equally  applicable  to both the
singular and plural forms of the terms defined):

         "Action"  means any  action,  suit,  arbitration,  inquiry,  regulatory
action,  enforcement  action proceeding or investigation by or before any court,
any  Governmental  Authority  or any  arbitration  tribunal,  including  without
limitation,  matters  arising under or in  connection  with  Environmental  Laws
(including matters relating to Pre-Existing Environmental Matters).

         "Affiliate"  means,  when  used with  respect  to a  specified  person,
another person that, directly or indirectly,  controls,  is controlled by, or is
under common control with, the person specified.


<PAGE>


         "Agreed Retail  Property  Value" means  Twenty-One  Million Six Hundred
Fifty Thousand Dollars  ($21,650,000),  plus all Capital  Expenditures made with
respect to the Retail  Properties,  determined  on a cash basis,  from and after
June 1, 2000 other than (1) up to  $120,000  of Capital  Expenditures  made with
respect  to space  leased  to The  Children's  Place  Retail  Stores,  Inc.,  in
Freeport,  Maine,  under and  pursuant to the terms of lease dated  December 31,
1999, as amended March 31, 2000, (2) up to $10,000 of Capital  Expenditures  for
the Retail Property located in Longmeadow,  Massachusetts,  and (3) up to $5,000
of Capital  Expenditures  for each Retail Property other than the one located in
Longmeadow, Massachusetts.

         "Assumed Liabilities" has the meaning set forth in Section 2.2.

         "Capital  Expenditure" means all expenditures which would be treated as
capital   expenditures   in  accordance  with  generally   accepted   accounting
principles, consistently applied.

         "Cash  Redemption  Payment"  shall be a dollar  amount equal to (A) the
number of Partnership  Units surrendered for redemption by Investor LLC pursuant
to Section 2.1, multiplied by the Partnership Cash Merger Consideration,  as and
if  adjusted  pursuant  to Section  1.12 of the Merger  Agreement,  plus (B) the
outstanding  principal  balance,  determined as of the Distribution Date, of the
Long Meadow Mortgage Loan,  less (C) the Agreed Retail Property Value.  The Cash
Redemption Payment shall be subject to adjustment as provided in Section 2.6.

         "CERCLA" means the Comprehensive  Environmental Response,  Compensation
and Liability Act, 42 U.S.C. Section 9601 et seq, as amended from time to time.

         "Distributed LLC's" has the meaning set forth in Section 2.1.

         "Distribution" has the meaning set forth in Section 2.1.

         "Distribution Date" has the meaning set forth in Section 2.1.

         "Effective Time" has the meaning set forth in Section 2.1

         "Environmental  Law"  shall  have the  meaning  set forth in the Merger
Agreement.

         "Former   Partner"   means  any  partner  or  member  (other  than  the
Partnership)  in the Distributed  LLC's or any  predecessor  entity that owned a
Retail Property.

         "Governmental  Authority"  means any government or any agency,  bureau,
board, commission, court, department, official, political subdivision,  tribunal
or other  instrumentality  of any government,  whether federal,  state or local,
domestic or foreign.

         "Hazardous  Material"  shall have the  meaning  set forth in the Merger
Agreement.

         "Indemnifying Party" has the meaning set forth in Section 5.2.

         "Indemnitee" has the meaning set forth in Section 5.2.

         "Indemnitee Notice" has the meaning set forth in Section 5.3.

         "IRS" means the Internal Revenue Service.

         "Liabilities"  means any and all debts,  liabilities  and  obligations,
absolute  or  contingent,  matured or  unmatured,  liquidated  or  unliquidated,
accrued or unaccrued,  known or unknown,  whenever arising,  including,  without
limitation, Taxes and those debts, liabilities and obligations arising under any
law (including without limitation Environmental Laws), rule, regulation, Action,
threatened  Action,  order or consent decree of any court,  any  governmental or
other  regulatory  or  administrative  agency or  commission or any award of any
arbitration  tribunal,  and those  arising  under any  contract,  commitment  or
undertaking.

         "Long Meadow Mortgage Loan" has the meaning set forth in Section 2.2.



                                       2
<PAGE>



         "Losses"  and "Loss"  mean any and all  losses,  charges,  Liabilities,
claims, damages, penalties and costs or expenses (including, without limitation,
reasonable  attorney's  fees  and  any and all  expenses  whatsoever  reasonably
incurred  in  investigating,  preparing  or  defending  against  any  Actions or
threatened Actions).

         "Partnership Merger" has the meaning set forth in the Recitals.

         "Pre-Existing   Environmental  Matters"  means  (A)  all  environmental
conditions  (including,  but not limited to,  Hazardous  Materials,  Underground
Storage  Tanks  and  wetlands)  which  (i)  are on or  under  any of the  Retail
Properties on the Distribution  Date, or (ii) were on or under any of the Retail
Properties at any time prior to the  Distribution  Date including any subsurface
migration of Hazardous Materials from any such Retail Property to any other site
or location prior to or after the Distribution Date (B) all actions or omissions
of the  Partnership,  the  Distributed  LLC's or any party acting by, through or
under the  Partnership or the  Distributed  LLC's in connection  with any of the
matters  referred  to in clause (A) of this  definition  and (C) all  actions or
omissions of the  Partnership,  the Distributed  LLC's or any parties acting by,
through  or under the  Partnership  or the  Distributed  LLC's at any time on or
before the  Distribution  Date with  respect  to  Hazardous  Materials  or other
matters within the scope of any Environmental Law, to the extent relating to any
of the Retail  Properties,  including  without  limitation any violations of any
Environmental Laws or permits.

         "RCRA"  means  the   Resource   Conservation   and  Recovery   Act,  42
U.S.C. Section 6901 et seq.

         "Retail  Properties"  means the land  legally  described  on  Exhibit B
attached  hereto  and all  related  improvements.  Exhibit B also sets forth the
address and common name of each of the Retail Properties, which are individually
referred to as a "Retail Property."

         "Taxes" means all taxes,  charges and fees imposed by the United States
or any state,  county,  local or foreign  government  or  subdivision  or agency
thereof.

         "Tenant  Leases"  means all leases for occupancy of space by tenants of
the Retail Properties.

         "Third-Party Claim" has the meaning set forth in Section 5.3.

         "Underground  Storage  Tanks" has the meaning  assigned to that term by
Section  9001 of RCRA and shall  also  include  the  following:  (A) any farm or
residential  tank of 1,100  gallons or less capacity used for storing motor fuel
for  non-commercial  purposes;  (B) any tank used for  storing  heating  oil for
consumptive use on the premises where stored;  (C) any septic tank; (D) any tank
which would be considered an underground storage tank under Section 9001 of RCRA
but for the fact that it contains  hazardous wastes; and (E) any pipes connected
to items (A) through (D).

                                   ARTICLE 2
                                   ---------

                          REDEMPTION AND DISTRIBUTION
                          ---------------------------

         2.1 REDEMPTION AND DISTRIBUTION.

              (a)  On  the  effective  date  of  the  Partnership   Merger  (the
"Distribution  Date"),  immediately  prior to the filing of the  certificate  of
merger  for  the  Partnership  Merger  (the  "Effective  Time"),  the  following
transactions shall be effectuated in the following order:


                   (i) First,  each of the Investors shall assign,  transfer and
contribute all of its Partnership Units (which shall be not less than all of the
Partnership  Units  set forth  beside  said  Investor's  name on  Exhibit  A) to
Investor LLC, pursuant to an Assignment and Assumption of Partnership  Interests
in the form  attached  hereto as Exhibit C. Upon the  execution  and delivery of
each Assignment and Assumption of Partnership  Interests,  Investor LLC shall be
admitted as a limited  partner in the Partnership in the place and stead of said
Investor; and

                   (ii) Second, Investor LLC shall withdraw from the Partnership
and  surrender  all of its  Partnership  Units (which shall be not less than the
aggregate number of Partnership  Units set forth on Exhibit A) for redemption by
the  Partnership  pursuant to an instrument  of complete  withdrawal in the form
attached hereto as



                                       3
<PAGE>



Exhibit D, and in consideration thereof the Partnership shall (x) distribute and
assign  to  Investor  LLC all of the  Partnership's  membership  interests  (the
"Distributed  Interests")  in the  limited  liability  companies  identified  on
Exhibit E  (collectively,  the  "Distributed  LLC's";  said  distribution  being
referred  to  herein  as the  "Distribution"),  pursuant  to an  Assignment  and
Assumption of Membership Interests in the form attached hereto as Exhibit F, (y)
assign to Investor LLC, without  representation  or warranty,  the name "Grove,"
any  trademarks  of which  the name  "Grove"  forms a  constituent  part and any
related  intellectual  property  rights  and (z) pay to  Investor  LLC the  Cash
Redemption  Payment, as the same may be adjusted pursuant to Section 2.6 hereof.
Upon the execution and delivery of the  Assignment  and Assumption of Membership
Interests,  the Partnership Units surrendered by Investor LLC shall be deemed to
have been redeemed and cancelled  without the necessity of further  action,  and
shall  thereupon  forever cease to exist,  and Investor LLC shall no longer be a
limited partner in the  Partnership.  Said  redemption is not being  effectuated
pursuant  to Section  8.6 of the  Partnership  Agreement  and shall not have the
consequences described therein.

              (b) Concurrently with the Distribution, Investors and Investor LLC
shall furnish the Partnership with an opinion of counsel,  in form and substance
satisfactory to the Partnership in the Partnership's reasonable discretion, with
respect to the  authorization,  execution,  delivery and  enforceability of this
Agreement and the instruments  required to be executed and delivered by Investor
LLC and Investors pursuant to this Agreement.

              (c) The  parties  hereto  agree that they  shall  each  report the
Distribution as made pursuant to Section 736(b) of the Internal  Revenue Code of
1986, as amended.

              (d) The parties hereto shall cooperate in executing and delivering
the  documents  referred  to  in  this  Section  2.1  so as  to  effectuate  the
transaction described above in accordance herewith.

         2.2 ASSUMPTION.

              (a)  Subject  to the  terms  and  conditions  of  this  Agreement,
simultaneously with the transactions contemplated by clause (ii) of Section 2.1,
Investor  LLC shall (and  hereby  does,  as of the  Effective  Time)  assume and
undertake  to pay  and  discharge  any  and  all  Liabilities,  if  any,  of the
Partnership,  whether  heretofore or hereafter incurred relating to, incurred in
connection  with or arising with respect to the Retail  Properties,  and any and
all Liabilities of the Distributed  LLC's (or any predecessor  thereto)  whether
heretofore  or hereafter  incurred  (collectively,  the "Assumed  Liabilities"),
regardless  of the  manner  in which  said  Liabilities  may have  arisen or are
alleged to have arisen (including,  without limitation and to the fullest extent
that said  assumption is permitted by applicable  law, any  Liabilities  arising
from the negligent,  willful or fraudulent  acts or omissions of the Partnership
or  the  Distributed  LLC's  or any  predecessor  thereto),  including,  without
limitation,  (i) all  liabilities  and  obligations  of the  Partnership  or the
Distributed   LLC's  (or  any  predecessor   thereto)  in  connection  with  any
Pre-Existing  Environmental Matters, (ii) all liabilities and obligations of the
Partnership or the Distributed LLC's (or any predecessor thereto) pursuant to or
in connection  with all  agreements  relating to a Retail  Property,  if any, to
which the Partnership or the Distributed LLC's (or any predecessor thereto) is a
party  or  to  which  the  Retail  Properties  are  subject  (collectively,  the
"Property-level Debt Instruments") and which evidence or secure any indebtedness
secured  by  mortgages,  deeds of  trust,  pledges,  collateral  assignments  or
security  agreements  with  respect  to one or  more  of the  Retail  Properties
(collectively,  the  "Property-level  Debt"),  (iii)  claims by employees of the
Distributed  LLC's (or any predecessor  thereto),  including  claims for accrued
vacation, sick pay and other related benefits, (iv) state, local and federal tax
liabilities  with  respect  to any tax year or  partial  tax year to the  extent
relating  to any  Distributed  LLC or any Retail  Property,  (v) tort  claims in
connection  with  injuries  sustained  or alleged by any party  (individuals  or
entity  collectively  a  "Third  Party")  relating  to a Retail  Property  or in
connection  with the  negligent or otherwise  tortious  acts or omissions of any
Distributed  LLC  (or any  predecessor  thereto)  or its  agents  or  employees,
officers or  directors,  (vi)  claims  made by any Third  Party for  breaches of
contract,  guaranties or indemnities to the extent  relating to any  Distributed
LLC or any Retail  Property,  (vii) any  contingent  liabilities  arising  under
guaranties,  warranties,  indemnities or other undertakings not identified in an
Exhibit to this Agreement,  to the extent relating to any Distributed LLC or any
Retail Property or (viii) any other pending or threatened litigation relating in
any manner to any Retail Property.  Notwithstanding  the foregoing,  the parties
agree  that (1)  Investor  LLC shall  assume  and  undertake  to  discharge,  in
accordance with the terms of the applicable Property-level Debt Instruments, the
mortgage loan from Webster Bank relating to the Long Meadow Retail Property (the
"Long Meadow Mortgage Loan"),  but shall not be obligated to assume or discharge
the lien of the Sovereign Bank  mortgages  which encumber the three other Retail
Properties in order to secure the Partnership's



                                       4
<PAGE>



credit line, which credit line and related Property-level Debt Instruments shall
be discharged by ERP OP at the Effective Time of the Partnership Merger, and (2)
the Assumed Liabilities shall not include any Liabilities voluntarily assumed by
the Partnership or any successor of the Partnership  after the Effective Time of
the Partnership Merger (e.g., any consent decree entered into by the Partnership
or any successor of the Partnership  relating to an  environmental  condition at
any Retail  Property,  or the settlement by the  Partnership or any successor of
the Partnership of any slip and fall case relating to any Retail Property).

         2.3 AS-IS,  WHERE-IS;  RELEASE BY INVESTOR  LLC.  Investor  LLC and the
Investors  specifically  acknowledge and agree that the Partnership has made and
makes no  representation,  warranty or covenant of any kind with  respect to the
Distributed  LLC's or the assets,  liabilities and business  thereof,  including
without   limitation  the  Retail  Properties,   any  environmental   conditions
(including,  without limitation,  any Pre-Existing Environmental Matters) at, or
with  respect  to,  the  Retail  Properties,  the  site or  physical  conditions
applicable to, or with respect to, the Retail Properties, the zoning regulations
or other governmental requirements applicable to, or with respect to, the Retail
Properties,  the  Property-level  Debt or any other  matter  affecting  the use,
occupancy,  operation or condition of or with respect to the Retail  Properties,
the level of income or profits  with  respect to the  Retail  Properties  or any
matter  whatsoever  with  respect  to  the  Retail  Properties  or  the  Assumed
Liabilities.  The  Investors,  and  Investor  LLC are  familiar  with  and  have
inspected  the Retail  Properties.  Investor  LLC shall  accept the  Distributed
Interests "AS IS," "WHERE IS" and "WITH ALL FAULTS" (whether  detectable or not)
on the Distribution  Date,  without any adjustment to the Agreed Retail Property
Value for any change in the  physical  or  financial  condition  occurring  with
respect to the Retail  Properties  or the  Distributed  LLC's from and after the
date of the Merger  Agreement  (other  than in the case of Capital  Expenditures
made from and after June 1, 2000,  or as  otherwise  provided  in Section  2.6).
Investor  LLC  acknowledges  and agrees  that  neither the  Partnership  nor its
employees and  representatives nor any other person will have, or be subject to,
any  liability  to  Investor  LLC  or  any  other  person   resulting  from  the
distribution  to  Investor  LLC,  or  Investor  LLC's  use of,  any  information
pertaining  to the Retail  Properties or the Assumed  Liabilities.  Investor LLC
hereby waives,  releases,  relinquishes and forever  discharges the Partnership,
its partners and their respective officers, directors,  shareholders,  trustees,
agents, employees and representatives,  and the successors and assigns of all of
the  foregoing  from  and  against  any  and  all  claims,   causes  of  action,
liabilities, losses, damages, costs and expenses (including, but not limited to,
all claims and causes of action  under  CERCLA for cost  recovery,  for  natural
resources  damages and for  contribution,  all claims and causes of action under
common law principles, and all claims under other Environmental Laws, including,
without  limitation,  RCRA) that Investor LLC may have against the  Partnership,
its direct or indirect  partners,  members  and  shareholders  or the  officers,
directors,   shareholders,   trustees,   agents,   employees,   representatives,
successors  and  assigns  of any of the  foregoing  for and with  respect to all
Pre-Existing Environmental Matters. Investor LLC also acknowledges that Investor
LLC has had sufficient  opportunity to conduct such  investigations  of and with
respect  to the Retail  Properties  as it had deemed  necessary  and  advisable.
Investor  LLC  has  not  been   induced  by,  and  has  not  relied  upon,   any
representation,  warranty or statement  made by the  Partnership or any officer,
agent,  representative,  employee,  broker  or  other  person  representing  the
Partnership.  To the fullest extent  permitted by applicable  law,  Investor LLC
waives any  requirements  for the  Partnership  to furnish to  Investor  LLC, or
record  against title to the Retail  Properties,  any  environmental  disclosure
documents  that would  otherwise be required to be  furnished or recorded  under
applicable law.

         2.4 IMPUTATION OF KNOWLEDGE TO INVESTOR LLC.  Investor LLC acknowledges
and agrees that certain of the key executives or principals of Investor LLC (who
have  exercised  responsibility  for the  formation of Investor LLC, and for the
negotiation,  execution,  delivery and performance of this Agreement)  including
without  limitation  the  Investors  are, and will remain  through the Effective
Time, key executives of the  Partnership's  general partner with  responsibility
for overseeing the operation of the Distributed LLC's and the Retail Properties,
that it is fair and reasonable in the circumstances to impute to Investor LLC as
of the  execution and delivery of this  Agreement and as of the Effective  Time,
all  knowledge,  if any,  of the  Partnership,  the  Distributed  LLC's (and any
predecessor  thereto)  with  respect to the Retail  Properties  and the  Assumed
Liabilities,  and that all such knowledge shall so be (and hereby is) imputed to
Investor LLC.  Investor LLC's  acknowledgments  and agreements set forth in this
Section and in Section 2.3 shall survive the Distribution indefinitely and shall
govern  in the  event  of any  conflict,  express  or  implied,  with any of the
documents executed or delivered in connection herewith.

         2.5  CONDEMNATION  AND CASUALTY;  PHYSICAL  CHANGES.  The  transactions
contemplated  under this  Article II shall be  consummated  as  provided in this
Agreement,  without  adjustment  or  delay  of  any  kind,  notwithstanding  the
occurrence of any damage,  destruction or other change in the physical condition
of one or more



                                       5
<PAGE>



of the Retail  Properties or the initiation or completion of any  proceedings in
eminent  domain (or any deeds granted by the  Partnership  in lieu thereof) with
respect  thereto;  provided  that the  Partnership  hereby,  effective as of the
Distribution Date, assigns to Investor LLC, without recourse,  representation or
warranty,  all rights, title and interest,  if any, of the Partnership in and to
any insurance proceeds or condemnation  awards or claims therefor related to all
Assumed  Liabilities,  including  without  limitation,  those  relating  to said
damage,  destruction or taking. The provisions of this Section 2.5 shall survive
the consummation of the transactions contemplated in this Agreement.

         2.6 CLOSING PRORATIONS AND ADJUSTMENTS.

              (a) A rent  roll  (updated  to within  five (5) days  prior to the
Distribution  Date) and a proposed statement of prorations and other adjustments
shall be prepared by Investor  LLC in  conformity  with the  provisions  of this
Agreement not less than five (5) business days prior to the  Distribution  Date.
For purposes of prorations, the Distribution shall be deemed to have occurred as
of 12:01 a.m. on the  Distribution  Date. The following items are to be prorated
or adjusted,  as the case may require,  as of the  Distribution  Date, and shall
constitute adjustments to the Cash Redemption Payment:

                   (i) real estate and personal  property taxes and  assessments
(prorated on the basis of 100% of the most recent ascertainable bill);

                   (ii) the base rent payable by tenants under the Tenant Leases
for the month in which the Distribution  Date occurs;  provided,  however,  that
rent and all other sums which are due and  payable to the  Distributed  LLC's by
any tenant but  uncollected as of the  Distribution  Date shall not be adjusted,
but Investor LLC shall use diligent  efforts to collect said past-due  rents and
shall  cause the rent and other  sums for the period  prior to the  Distribution
Date to be  remitted  to the  Partnership  if,  as and  when  collected.  On the
Distribution  Date,  the  Partnership  shall  deliver to Investor LLC a schedule
(prepared by the  Partnership as of the most recent date  available) of all such
past due but uncollected rent and other sums owed by tenants. Investor LLC shall
promptly remit to the  Partnership any such rent or other sums paid by scheduled
tenants,  but only if a  deficiency  in the  then  current  rent is not  thereby
created.  Investor LLC shall bill tenants who owe rent for periods  prior to the
Distribution  Date on a monthly basis for six consecutive  months  following the
Distribution  Date.  In the case of  percentage  rents,  it is the intent of the
parties  that  the  Partnership  (directly  or  through  its  ownership  of  the
Distributed  LLC's  prior  to the  Effective  Time)  shall  be  entitled  to any
percentage rent payments, if any, to the extent accrued through the Distribution
Date. In the case of pass-throughs  for taxes and expenses,  it is the intent of
the parties  that the  Partnership  (directly  or through its  ownership  of the
Distributed  LLC's prior to the  Effective  Time) shall be entitled to an amount
equal to the total payments due from tenants for the 2000 calendar year or other
collection  period under the applicable  Tenant Lease in which the  Distribution
Date  occurs,  multiplied  by a fraction,  the  numerator of which is the actual
taxes or expenses paid by the Partnership  (directly or through its ownership of
the  Distributed  LLC's prior to the  Effective  Time) or with  respect to which
Investor LLC has received a credit in connection with the Distribution,  and the
denominator  of which is the total taxes and expenses for said  calendar year or
other collection period.  Investor LLC shall use diligent efforts to collect all
percentage  rents and  pass-throughs  with respect to which the  Partnership  is
entitled to share pursuant to this clause (ii), and shall not waive or modify in
any material  respect the obligation of any tenant under a Tenant Lease,  to the
detriment of the Partnership,  without the Partnership's  prior written consent.
If any amount owed by a tenant under a Tenant Lease remains  delinquent for more
than  ninety  (90) days past the date on which said  amount was due,  and if the
Partnership has the right to share in all or any portion of said amount pursuant
to this clause  (ii),  then the  Partnership  shall have the right,  at its sole
cost, to enforce the obligation of said tenant under said Tenant Lease (and this
clause  (ii),  without  more,   constitutes  an  assignment  of  said  right  of
enforcement),  but in no event may the  Partnership  seek to evict any tenant or
terminate any Tenant Lease. From and after the Distribution  Date,  Investor LLC
shall  certify  monthly,  as to all income  (broken into  categories  of income)
received under all Tenant Leases until all of Investor LLC's  obligations  under
this Section 2.6 have been satisfied in full, but in no event to exceed a period
equal to six (6)  months  from the  Distribution  Date.  Upon  prior  reasonable
written  notice,  the  Partnership  shall have the right to  inspect  and review
Investor  LLC's  books  and  records,  and  shall  have the  right to  engage an
accounting  firm to audit  said  books  and  records,  which  audit  shall be at
Investor  LLC's expense if it discloses that any category of income with respect
to which the  Partnership  is  entitled to share  pursuant  hereto was more than
three  percent (3%)  greater than the amounts  certified by Investor LLC for the
period of time in question.



                                       6
<PAGE>



                   (iii)  water,  electric,  telephone  and  all  other  utility
charges,  and any assignable  deposits with utility  companies (said  assignable
deposits being credited to the  Partnership)  (to the extent  possible,  utility
prorations will be handled by meter readings on the Distribution Date);

                   (iv)  amounts  due  and   prepayments,   if  any,  under  all
contracts,  agreements,  leases and licenses  (including  equipment leases,  but
excluding Tenant Leases and the Property-level Debt Instruments);

                   (v) assignable license and permit fees;

                   (vi) interest on any assumed Property-level Debt;

                   (vii)  other   expenses  of  operation   and  similar   items
(including  workers'  compensation  payments,  if any)  customarily  prorated in
connection with real estate  closings for similar  properties in the locality in
question  (provided that all Capital  Expenditures made after June 1, 2000 shall
be treated as provided in the definition of Agreed Retail Property Value);

                   (viii) The Partnership shall receive a credit for all cash in
any bank accounts of the Distributed LLC's as of the Distribution Date; and

                   (ix) The  Partnership  shall be  responsible  for  paying all
premiums, fees and other costs associated with the maintenance or termination of
any insurance  policies  maintained by the Partnership or the Distributed  LLC's
prior to the Distribution Date with respect to the Retail Properties,  and shall
be  entitled  to any  refunds  of  unearned  premiums  with  respect  to prepaid
insurance amounts in connection with the termination of said policies.

Any proration (other than general real estate and personal property taxes) which
must be  estimated on the  Distribution  Date shall be  re-prorated  and finally
adjusted as soon as practicable  after the  Distribution  Date;  otherwise,  all
prorations shall be final. In the case of pass-throughs  for general real estate
taxes and  expenses,  the parties shall project in good faith what the amount of
the final  proration will be at the end of the lease fiscal year in question (or
other  collection  period under the applicable  Tenant Lease) and shall use such
projection as the basis for the proration  adjustment on the Distribution  Date,
subject to  readjustment  within  thirty (30) days after the close of the fiscal
year for each Tenant  Lease (or other  collection  period  under the  applicable
Tenant Lease).

         2.7  CLOSING  COSTS.  Investor  LLC shall  assume and pay all  transfer
taxes,  if any,  loan  assumption  fees, if any, and any and all other costs and
expenses of consummating  the  transactions  contemplated  under this Agreement.
Investor LLC shall have no responsibility to pay for legal,  accounting or other
consulting  services  retained by ERP OP or an Affiliate of ERP OP in connection
with said transactions.

                                   ARTICLE 3
                                   ---------

                         REPRESENTATIONS AND WARRANTIES
                         ------------------------------

         3.1  REPRESENTATIONS  AND  WARRANTIES  OF INVESTOR  LLC.  Investor  LLC
represents and warrants to the Partnership as follows:

              (a) Investor LLC is a limited liability company duly organized and
validly existing under the laws of the State of Delaware, and has full power and
lawful authority under its organizational  documents to enter into and carry out
the terms and  provisions of this Agreement that are applicable to Investor LLC.
All  actions  necessary  to confer  such power and  authority  upon the  persons
executing  this  Agreement  (and all documents  which are  contemplated  by this
Agreement  to be executed on behalf of Investor  LLC) have been taken.  Investor
LLC's  execution,  delivery and  performance of the terms and provisions of this
Agreement  that are  applicable to Investor LLC will not result in any violation
of, or default  under,  or  require  any  notice or  consent  under,  any of the
respective Investor LLC's organizational documents.

         3.2  REPRESENTATIONS  AND  WARRANTIES  OF INVESTOR  LLC.  Investor  LLC
represents and warrants to the Partnership as follows:


                                       7
<PAGE>



              (a) The Partnership has never owned fee title to any of the Retail
Properties.  Neither the Partnership nor the general partners of the Partnership
are liable for, or are  guarantors  of, any  obligations  or  Liabilities of the
Distributed  LLC's,  including  without  limitation  any  obligations  under  or
relating to any Tenant Leases or  Property-level  Debt. The Partnership is not a
party to any Action involving the Retail Properties or the Distributed LLC's.

              (b) The  Distributed  LLC's own no real  property  other  than the
Retail Properties.  Attached hereto as Exhibit G is a true and accurate schedule
of all assets and  Liabilities of each of the Distributed  LLC's,  including all
Property-level Debt.

              (c) The Distributed  LLC's have no source of income other than the
Tenant Leases.  Attached hereto as Exhibit H is a true and accurate  schedule of
all of the Tenant Leases.

              (d)  Except  as set  forth on  Exhibit  I,  there  are no  Actions
pending, or to the knowledge of Investors threatened, with respect to the Retail
Properties or the Distributed LLC's.

         3.3  REPRESENTATIONS   AND  WARRANTIES  OF  INVESTORS.   Each  Investor
represents and warrants to the Partnership as follows:


              (a)  Exhibit A  accurately  sets forth the  number of  Partnership
Units to which said Investor holds legal title.  Said Investor owns good, valid,
and marketable  title to said  Partnership  Units,  free and clear of all liens,
claims, debts, security interests,  judgments,  mortgages, options, call rights,
sale agreements, rights of third parties or encumbrances of any kind whatsoever.
Said Investor is not the beneficial owner of any Partnership  Units,  other than
the Partnership Units legally owned by said Investor and set forth on Exhibit A.
For the purposes hereof,  the term "beneficial owner" shall have the meaning set
forth in Rule  13d-3  under  the  Exchange  Act  Rules,  as  promulgated  by the
Commission.

         3.4 REAFFIRMATION OF REPRESENTATIONS AND WARRANTIES;  SURVIVAL.  All of
the  representations  and  warranties  made in this Article 3 shall be deemed to
have been remade and reaffirmed as of the  Distribution  Date, as though made on
the  Distribution  Date, and shall survive the  consummation of the Distribution
indefinitely.

                                   ARTICLE 4
                                   ---------

                                   COVENANTS
                                   ---------

         4.1  ENCUMBRANCE  OF  INTERESTS.  Neither  Investor  LLC nor any of the
Investors shall mortgage, pledge, assign, sell, transfer,  hypothecate,  grant a
security interest in or otherwise encumber,  directly or indirectly,  all or any
portion of the respective Partnership Units owned by it from time to time.

         4.2  FURTHER  ASSURANCES.  All of the  parties  hereto  shall use their
reasonable best efforts,  prior to, on and after the Distribution  Date, to take
or cause to be taken,  all actions,  and to do, or cause to be done, all things,
necessary,  proper or desirable  under  applicable laws and regulations to carry
out  the  purposes  of this  Agreement.  Without  limiting  the  foregoing,  The
Partnership and Investor LLC shall use their best efforts to obtain all consents
and approvals,  to enter into all amendatory  agreements and to make all filings
and  applications  and take all  other  actions  which may be  required  for the
consummation of the  transactions  contemplated  by this  Agreement,  including,
without limitation, all applicable regulatory filings.

         4.3 CAPITAL  EXPENDITURES.  Investors  shall notify the Partnership not
less than ten (10) business days prior to causing the Distributed LLC's to incur
any  Capital  Expenditures,  which shall be subject to any  limitations  thereon
contained in the Merger Agreement.

         4.4 MAINTENANCE OF NET WORTH.  Investor LLC covenants and agrees, for a
period of two (2) years following the  Distribution  Date, that (i) it shall not
(and  shall  not  permit  the  Distributed  LLC's to)  sell,  assign,  transfer,
mortgage,  pledge,  hypothecate or otherwise encumber the Retail Properties, any
interest therein,  or any interest of Investor LLC in the Distributed LLC's, and
(ii)  it  shall  not  make  any  distribution  of the  proceeds  of any  sale or
financing,  if the effect of any of the  foregoing  actions in (i) or (ii) above
would be to reduce the net worth of Investor LLC below  $5,000,000 as determined
in accordance with generally accepted accounting principles,



                                       8
<PAGE>



consistently  applied.  In the event of a violation of the  foregoing  covenant,
Investors shall, without further action, be deemed to have assumed,  jointly and
severally,  the  obligations  of Investor LLC under  Section 2.6,  Article 3 and
Article 5 of this Agreement.  This Section 4.4 shall survive the consummation of
the transactions contemplated under this Agreement.

         4.5 OPERATION OF PROPERTIES. The Distributed LLC's shall have the right
to lease,  manage and operate the Retail Properties in whatever manner they deem
appropriate during the period between the date hereof and the Distribution Date,
to the extent  consistent  with the  Distributed  LLCs'  current  standards  and
practices.  Without  limiting the  definition of Capital  Expenditures,  leasing
commissions,  tenant  allowances,  rent abatements and any costs of constructing
tenant improvements shall be included in the definition of Capital Expenditures.

                                   ARTICLE 5
                                   ---------

                                INDEMNIFICATION
                                ---------------

         5.1  INDEMNIFICATION.  Except as otherwise set forth  herein,  Investor
LLC, for itself, its Affiliates and its respective successors and assigns, shall
indemnify,  defend and hold  harmless  the  Partnership,  each of its  trustees,
officers,  employees and agents, each Affiliate of the Partnership,  and each of
the  heirs,  executors,  successors  and  assigns of any of the  foregoing  (the
"Partnership  Indemnitees")  from and against any and all Losses and Liabilities
of and Actions against the Partnership  Indemnitees arising out of, by reason of
or  otherwise  in  connection  with  (i)  the  Assumed  Liabilities,   (ii)  the
obligations of Investor LLC and/or the Investors under this Agreement, and (iii)
any  Actions  brought  or joined in by any  Former  Partner  and/or  any  person
claiming by or through any Former Partner, alleging that said Former Partner has
suffered or sustained any Loss or Liability,  or incurred any increased  expense
(including  any  acceleration  of, or any  increase  in,  the Taxes owed by said
Former Partner) by reason of the transactions  contemplated by this Agreement or
by reason of any act of Investors.

         5.2 LIMITATIONS ON  INDEMNIFICATION  OBLIGATIONS.  The amount which any
party (an "Indemnifying  Party") is or may be required to pay to any other party
(an  "Indemnitee")  pursuant to Section 5.1 shall be reduced  (retroactively  or
prospectively) by any insurance  proceeds or other amounts actually recovered by
or on behalf  of such  Indemnitee,  in  reduction  of the  related  Loss.  If an
Indemnitee  shall have received the payment  required by this  Agreement from an
Indemnifying Party in respect of a Loss and shall subsequently  actually receive
insurance  proceeds  or  other  amounts  in  respect  of such  Loss,  then  such
Indemnitee  shall pay to such  Indemnifying  Party a sum equal to the  amount of
such insurance  proceeds,  net of the costs  (including any fees) of recovery of
insurance  proceeds,  or other amounts  actually  received,  up to the aggregate
amount of any payments  received from such  Indemnifying  Party pursuant to this
Agreement in respect of such Loss.

         5.3  PROCEDURE FOR INDEMNIFICATION

              (a) If an Indemnitee  shall receive  notice or otherwise  learn of
the  assertion by a person  (including,  without  limitation,  any  Governmental
Authority) who is not a party to this  Agreement or the Merger  Agreement of any
claim or of the  commencement  by any such person of any Action (a  "Third-Party
Claim") with respect to which an Indemnifying  Party may be obligated to provide
indemnification  pursuant to this  Agreement,  such  Indemnitee  shall give such
Indemnifying  Party written notice (the  "Indemnitee  Notice")  thereof promptly
after becoming aware of such  Third-Party  Claim;  provided,  however,  that the
failure of any  Indemnitee  to give notice as provided in this Section 5.3 shall
not relieve the  applicable  Indemnifying  Party of its  obligations  under this
Article V, except to the extent that such  Indemnifying  Party is  prejudiced by
such  failure  to  give  notice.  Such  Indemnitee  Notice  shall  describe  the
Third-Party  Claim in reasonable detail and shall indicate the amount (estimated
if necessary) of the Loss that has been or may be sustained by such Indemnitee.

              (b) The  Indemnitee  shall  provide to the  Indemnifying  Party on
request all information and  documentation  reasonably  necessary to support and
verify  any  Losses  which  the  Indemnitee  believes  give  rise to a claim for
indemnification  hereunder  and shall  give the  Indemnifying  Party  reasonable
access to all  books,  records  and  personnel  in the  possession  or under the
control of the Indemnitee which would have bearing on such claim.

              (c) Upon  receipt of the  Indemnitee  Notice  required  by Section
5.3(a),  the  Indemnifying  Party shall be  entitled,  if it so elects,  to take
control of the defense and investigation with respect to such claim and to



                                       9
<PAGE>



employ and  engage  attorneys  of its own choice  (subject  to  approval  by the
Indemnitee,  which  approval shall not be  unreasonably  withheld) to handle and
defend the same,  at the  Indemnifying  Party's  cost,  risk and  expense,  upon
written  notice to the  Indemnitee of such  election  within twenty (20) days of
receipt of  Indemnitee's  notice.  The  Indemnifying  Party shall not settle any
third-party  claim that is the  subject of  indemnification  without the written
consent of the  Indemnitee,  which consent shall not be  unreasonably  withheld;
provided,  however,  that the Indemnifying  Party may settle a claim without the
Indemnitee's  consent if such settlement (i) includes a complete  release of the
Indemnitee  and (ii) does not require the Indemnitee to make any payment or take
any action or otherwise materially adversely affect the Indemnitee. After notice
from an  Indemnifying  Party to an  Indemnitee  of its  election  to assume  the
defense of a Third-Party  Claim, such  Indemnifying  Party will not be liable to
such  Indemnitee   under  this  Article  V  for  any  legal  or  other  expenses
subsequently incurred by such Indemnitee in connection with the defense thereof;
provided,   that,  if  the  defendants  in  any  such  claim  include  both  the
Indemnifying  Party  and one or more  Indemnitees  and a  conflict  of  interest
between such Indemnitees and such  Indemnifying  Party exists in respect of such
claim,  such  Indemnitees  will  have  the  right  to  employ  separate  counsel
reasonably satisfactory to the Indemnifying Party to represent such Indemnitees,
and in that event the reasonable fees and expenses of such separate counsel (but
not more than one separate counsel) will be paid by such Indemnifying Party.

              (d) If an  Indemnifying  Party  elects  to  defend  or to  seek to
compromise any Third-Party Claim, the appropriate Indemnitee shall (x) cooperate
in all reasonable  respects with the Indemnifying  Party in connection with such
defense and (y) not admit any liability  with respect to, or settle,  compromise
or discharge,  such  Third-Party  Claim without the  Indemnifying  Party's prior
written consent.

              (e) If the Indemnifying  Party shall decline to assume the defense
of any such  Third-Party  Claim,  or shall fail to notify the Indemnitee that it
will defend such claim within twenty (20) days after  receipt of the  Indemnitee
Notice,  the Indemnitee  shall have the right to defend against such claim.  The
reasonable expenses of all proceedings,  contests or lawsuits in respect of such
claims  shall be borne by the  Indemnifying  Party but only if the  Indemnifying
Party is  responsible  pursuant to this Article V to indemnify the Indemnitee in
respect of the Third-Party Claim.

              (f) In the  event  of  payment  by an  Indemnifying  Party  to any
Indemnitee in connection with any Third-Party  Claim,  such  Indemnifying  Party
shall be subrogated to and shall stand in the place of such Indemnitee as to any
events or circumstances with respect to which such Indemnitee may have any right
or claim  relating to such  Third-Party  Claim against any claimant or plaintiff
asserting such  Third-Party  Claim.  Such  Indemnitee  shall cooperate with such
Indemnifying  Party in a reasonable  manner, and at the cost and expense of such
Indemnifying Party, in prosecuting any subrogated right or claim.

              (g)  With  respect  to  any   Third-Party   Claim  for  which  the
Indemnifying Party assumes  responsibility  for defense,  the Indemnifying Party
shall  inform  the  Indemnitee,  upon  the  reasonable  written  request  of the
Indemnitee,  of the status of efforts to resolve such  Third-Party  Claim.  With
respect  to any  Third-Party  Claim for which the  Indemnifying  Party  does not
assume such responsibility,  the Indemnitee shall inform the Indemnifying Party,
upon the reasonable written request of the Indemnifying  Party, of the status of
efforts to resolve such Third-Party Claim.

         5.4 SURVIVAL OF INDEMNITIES. The obligations of Investor LLC under this
Article V shall survive the consummation of the Distribution  indefinitely,  and
shall also  survive  the sale or other  transfer  by it or them of any assets or
businesses  or the  assignment  or  purported  assignment  by it or  them of any
Liabilities.

                                   ARTICLE 6
                                   ---------

              CONDITIONS TO THE CONTRIBUTION AND THE DISTRIBUTIONS
              ----------------------------------------------------

         6.1 CONDITIONS  PRECEDENT TO THE  DISTRIBUTIONS.  The obligation of the
Partnership  to  effectuate  the  Distribution  pursuant  to Article II shall be
subject, at the option of the Partnership, to the fulfillment or waiver, of each
of the following conditions:

              (a) NO PROHIBITIONS. Consummation of the transactions contemplated
hereby shall not be prohibited by applicable law and no  Governmental  Authority
of competent jurisdiction shall have enacted, issued,



                                       10
<PAGE>



promulgated, enforced or entered any statute, rule, regulation, executive order,
decree, injunction or other order (whether temporary,  preliminary or permanent)
which is in  effect  and  which  materially  restricts,  prevents  or  prohibits
consummation  of the  Distribution,  the  Partnership  Merger or any transaction
contemplated by this Agreement or the Merger Agreement, it being understood that
the parties  hereto hereby agree to use their  reasonable  best efforts to cause
any such decree, judgment,  injunction or other order to be vacated or lifted as
promptly as possible.

              (b) CONDITIONS  PRECEDENT TO PARTNERSHIP  MERGER  SATISFIED.  Each
condition to the closing of the  Partnership  Merger set forth in Sections  6.1,
6.2 and 6.3 of the Merger Agreement shall have been satisfied or waived.

              (c) ACCURACY OF REPRESENTATION. The representations and warranties
in Article 3 shall be true and complete in all material respects,  and Investors
and  Investor  LLC shall not be in breach of their  respective  covenants  under
Section 4.2.

              (d)  Execution  and  delivery  of the  instruments  required to be
executed and delivered pursuant to Section 2.1(a).

              (e) The  Partnership  and Investor  LLC shall take all  reasonable
steps  necessary  and  appropriate  to cause  the  conditions  set forth in this
Section 6.1 to be satisfied and to effect the  Distribution on the  Distribution
Date.  Any party  shall  have the right to waive any  condition  that is for its
exclusive benefit.

                                   ARTICLE 7
                                   ---------

                                 MISCELLANEOUS
                                 -------------

         7.1 COMPLETE  AGREEMENT;  CONSTRUCTION.  This Agreement,  including the
Exhibits and Schedules,  constitutes  the entire  agreement  between the parties
with  respect  to  the  subject  matter  hereof,  and  supersedes  all  previous
negotiations, commitments and writings with respect to such subject matter.

         7.2 SURVIVAL OF AGREEMENTS.  Except as otherwise  contemplated  by this
Agreement,  all  representations,  warranties,  covenants and  agreements of the
parties contained in this Agreement will survive the Distribution Date.

         7.3 GOVERNING  LAW. This Agreement will be governed by and construed in
accordance  with  the laws of the  State  of  Delaware,  without  regard  to the
principles of conflicts of laws thereof.

         7.4 NOTICES. All notices and other communications  hereunder must be in
writing and must be delivered by hand,  mailed by registered  or certified  mail
(return receipt  requested) or sent by facsimile  transmission to the parties at
the  following  addresses  (or at such  other  addresses  for a party  as may be
specified  by like  notice)  and will be deemed  given on the date on which such
notice is received:

                      To the Partnership:

                      Before the Distribution Date, to:

                      Grove Property Trust
                      598 Asylum Avenue
                      Hartford, Connecticut  06105
                      Fax No.:  (860) 527-0401



                                       11
<PAGE>



                      With a copy to:

                      Cummings & Lockwood
                      Four Stamford Plaza
                      107 Elm Street
                      Stamford, Connecticut  06904
                      Attention:  Michael J. Hinton
                      After the Distribution Date, to:

                      ERP Operating Limited Partnership
                      Two North Riverside Plaza, Suite 400
                      Chicago, Illinois  60606
                      Fax No.  (312) 454-0434

                      With a copy to:

                      Piper Marbury Rudnick & Wolfe
                      203 North LaSalle Street

                      Suite 1800
                      Chicago, Illinois  60601
                      Attention:  Errol R. Halperin

                      To Investor LLC:

                      Grove Property Trust
                      598 Asylum Avenue
                      Hartford, Connecticut  06105
                      Fax No.:  (860) 527-0401

                      With a copy to:

                      Cummings & Lockwood
                      Four Stamford Plaza
                      107 Elm Street
                      Stamford, Connecticut  06904
                      Attention:  Michael J. Hinton

         Prior to the  Distribution  Date,  copies of all notices sent to either
party shall be sent to ERP OP at:

                      ERP Operating Limited Partnership
                      Two North Riverside Plaza, Suite 400
                      Chicago, Illinois  60606
                      Fax No.  (312) 454-0434

         7.5 AMENDMENTS. This Agreement may not be modified or amended except by
an agreement in writing signed by the parties.

         7.6 SUCCESSORS AND ASSIGNS.  Except in connection  with the Partnership
Merger, this Agreement shall not be assignable, in whole or in part, directly or
indirectly,  by either party  hereto  without the prior  written  consent of the
other,  and any attempt to assign any rights or  obligations  arising under this
Agreement  without  such  consent  shall be void;  provided,  however,  that the
provisions of this Agreement shall be binding upon,  inure to the benefit of and
be  enforceable  by the parties and their  respective  successors  and permitted
assigns;  provided,  further,  that the  rights or the  Partnership  under  this
Agreement may be assigned after the  Partnership  Merger to any Affiliate of the
Partnership.



                                       12
<PAGE>



         7.7 NO THIRD-PARTY BENEFICIARIES.  Except for the provisions of Article
V relating to  Indemnitees  and as  otherwise  expressly  provided  herein,  the
provisions of this  Agreement  are solely for the benefit of the parties  hereto
and their respective  successors and permitted  assigns and should not be deemed
to confer upon third parties any remedy, claim, liability,  reimbursement, claim
of action or other right in excess of those existing  without  reference to this
Agreement.

         7.8  TERMINATION  ON TERMINATION  OF MERGER  AGREEMENT.  This Agreement
shall  terminate in the event of the  termination  or  expiration  of the Merger
Agreement prior to the consummation of the Partnership Merger.

         7.9 TITLE AND  HEADINGS.  Titles and  headings to  sections  herein are
inserted for the convenience of reference only and are not intended to be a part
of or to affect the meaning or interpretation of this Agreement.

         7.10 LEGAL  ENFORCEABILITY.  Any provision of this  Agreement  which is
prohibited or unenforceable in any jurisdiction  shall, as to such jurisdiction,
be ineffective to the extent of such  prohibition  or  unenforceability  without
invalidating  the  remaining   provisions   hereof.   Any  such  prohibition  or
unenforceability   in  any   jurisdiction   shall  not   invalidate   or  render
unenforceable such provision in any other jurisdiction. Without prejudice to any
rights or remedies  otherwise  available to any party hereto,  each party hereto
acknowledges  that damages would be an  inadequate  remedy for any breach of the
provisions  of this  Agreement  and agrees that the  obligations  of the parties
hereunder are specifically enforceable.

         7.11  COUNTERPARTS.  This  Agreement  may be  executed  in one or  more
counterparts,  each of which when executed shall be deemed an original,  but all
of which together shall constitute one and the same instrument.

         7.12 NON-RECOURSE TO PARTNERS OF THE PARTNERSHIP.  Investor LLC and the
Investors shall look solely to the assets of the Partnership for satisfaction of
any  liability  of the  Partnership  with  respect  to  this  Agreement  and all
documents,   agreements,   understandings  and  arrangements  relating  to  this
Agreement and will not seek recourse or commence any action  against any general
partner or limited partner or the Partnership or the trustees or officers of any
of the  foregoing  for the  performance  or  payment  of any  obligation  of the
Partnership hereunder or thereunder.

         7.13 LIMITED RECOURSE TO INVESTORS.  The Partnership  shall look solely
to the assets of Investor LLC for  satisfaction of any liability of Investor LLC
with respect to this Agreement and all documents, agreements, understandings and
arrangements  relating to this  Agreement and will not seek recourse or commence
any action against any member of Investor LLC or the trustees or officers of any
of the foregoing for the  performance  or payment of any  obligation of Investor
LLC hereunder or thereunder;  provided,  however, that nothing contained in this
Section 7.13 shall limit the liability of the Investors under Section 3.3 or, to
the extent applicable, Section 4.4.



                                       13
<PAGE>



         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the day and year first above written.

                                       GROVE OPERATING, L.P., a Delaware
                                       limited partnership

                                       By: GROVE PROPERTY TRUST, a Maryland
                                           real estate investment trust,
                                           General partner


                                       By:    /s/ Joseph R. LaBrosse
                                             ---------------------------
                                       Name:  Joseph R. LaBrosse
                                             ---------------------------
                                       Title: Chief Financial Officer
                                             ---------------------------

                                       GROVE REALTY LLC, a Delaware limited
                                       liability company


                                       By:    /s/ Joseph R. LaBrosse
                                             ---------------------------
                                       Name:  Joseph R. LaBrosse
                                             ---------------------------
                                       Title: Chief Financial Officer
                                             ---------------------------


                                        /s/ Damon D. Navarro
                                       ---------------------------------
                                       DAMON D. NAVARRO


                                        /s/ Brian D. Navarro
                                       ---------------------------------
                                       BRIAN D. NAVARRO


                                        /s/ Edmund F. Navarro
                                       ---------------------------------
                                       EDMUND F. NAVARRO


                                        /s/ Joseph R. Labrosse
                                       ---------------------------------
                                       JOSEPH R. LABROSSE



                                       14
<PAGE>





Schedule of Exhibits

Exhibit A     -     Schedule of Partnership Units
Exhibit B     -     Schedule of Retail Properties (including Legal Descriptions)
Exhibit C     -     Form of Assignment and Assumption of Partnership Interests
Exhibit D     -     Form of Instrument of Withdrawal
Exhibit E     -     Schedule of Distributed LLC's
Exhibit F     -     Form of Assignment of Membership Interests
Exhibit G     -     Schedule of Assets and Liabilities
Exhibit H     -     Schedule of Tenant Leases
Exhibit I     -     Schedule of Pending Actions



                                       15
<PAGE>




                                CONSENT OF GROVE
                                ----------------

         The undersigned, in its capacity as General Partner of the Partnership,
hereby  consents  to the  transactions  described  in  Section  2.1(a)  of  this
Agreement and waives any right of first refusal under Section  11.3(A)(a) of the
Partnership Agreement.

                                       GROVE PROPERTY TRUST, a Maryland
                                       real estate investment trust


                                       By:    /s/ Joseph R. LaBrosse
                                             ---------------------------
                                       Name:  Joseph R. LaBrosse
                                             ---------------------------
                                       Title: Chief Financial Officer
                                             ---------------------------



                                       16
<PAGE>



                                    EXHIBIT A
                                    ---------

                          SCHEDULE OF PARTNERSHIP UNITS
                          -----------------------------

                                  UNIT HOLDERS
                                  ------------


           UNIT HOLDER                                     # OF UNITS
           -----------                                     ----------

        Damon D. Navarro                                      324,294

        Brian D. Navarro                                      316,743

        Edmund F. Navarro                                     280,357

        Joseph R. LaBrosse                                     76,833
                                                            ---------
                                                              998,227



         In addition to the  Partnership  Units  listed  above,  Damon and Brian
Navarro are the beneficial  owners of an additional  14,307  Partnership  Units,
which  will not be  contributed  to  Investor  LLC,  but which  instead  will be
tendered  in  connection  with  the  transactions  contemplated  in  the  Merger
Agreement.



                                      A-1



<PAGE>















































                                       Special Proxy Statement:     1307 SPPS 00




<PAGE>



                                   DETACH HERE

|X|   Please mark
      votes as in
      this example.

This proxy is solicited by the Board of Trust  Managers and may be revoked prior
to  exercise.  This proxy,  when  properly  executed,  will be voted as directed
herein by the undersigned shareholder.  In the absence of direction,  this proxy
will be voted FOR Item 1.


                                                           FOR  AGAINST  ABSTAIN

1. Approval  of the  merger  of  Grove  Property  Trust    [ ]    [ ]      [ ]
   ("Grove") into a subsidiary of ERP Operating Limited
   Partnership  ("ERP"),  pursuant to an Agreement  and
   Plan of  Merger,  dated  as of July 17,  2000  among
   Grove, Grove Operating,  L.P. and ERP, and the other
   transactions contemplated by the merger agreement.

2. Other Business:
   In their  discretion,  the  proxies are  authorized  to vote  upon such other
   business as may properly be brought before the meeting.


                                MARK HERE FOR ADDRESS        MARK HERE IF
                                CHANGE AND NOTE AT LEFT [ ]  YOU PLAN TO   [ ]
                                                             ATTEND THE
                                                             MEETING

                                Please sign exactly as name(s) appear(s) hereon.
                                If shares are  registered in the names of two or
                                more  persons,   each  should  sign.  Executors,
                                administrators,       trustees,       guardians,
                                attorneys-in-fact,  general  partners  and other
                                persons  acting  in  a  representative  capacity
                                should add their title.  When the proxy is given
                                by a  corporation,  it  should  be  signed by an
                                authorized officer.


Signature               Date           Signature                Date

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



<PAGE>



                                   DETACH HERE


                              GROVE PROPERTY TRUST


                 The undersigned  hereby appoints Damon D. Navarro and Joseph R.
     P    LaBrosse,   and  each  of  them,  as  proxies,   with  full  power  of
     R    substitution  in each, to vote the shares of Grove Property Trust (the
     O    "Company")  of  the   undersigned  at  the  Special   Meeting  of  the
     X    Shareholders  to be held on Tuesday,  October 31, 2000 at 9:00 a.m. at
     Y    The Hartford Club, 46 Prospect Street, Hartford, Connecticut 06103 and
          at any adjournment thereof as specified on the reverse side.















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

SEE REVERSE        CONTINUED AND TO BE SIGNED ON REVERSE SIDE        SEE REVERSE
   SIDE                                                                 SIDE

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