GROVE PROPERTY TRUST
PREM14A, 2000-08-25
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:

     [X]   Preliminary Proxy Statement

     [ ]   Confidential, for Use of the Commission Only (as permitted by Rule
           14a-6(e)(2))
     [ ]   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.
[X]  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:

          Common Shares of  Beneficial  Interest,  $.01 par value per share,  of
          Grove Property Trust

     2)   Aggregate number of securities to which transaction applies:

          8,359,010 shares

     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):

          $17.00  per share  based on the  amount of cash into  which each share
          will be converted upon consummation of the transaction

     4)   Proposed maximum aggregate value of transaction:

          $142,103,170


     5)   Total fee paid:

          $28,420.63




<PAGE>




[ ]   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:

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




<PAGE>




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

                            __________________, 2000

Dear Shareholders:

         You are cordially  invited to attend a special  meeting of shareholders
of Grove Property Trust ("Grove") to be held at __________  a.m.,  Eastern time,
on  __________,  __________,  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.  If the
proposed merger takes place, each outstanding share of beneficial interest, $.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 adjustment as provided for in the
merger agreement), 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.  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 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  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,  we thank  you for your
continued  support and again we 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


                                       2
<PAGE>



                              GROVE PROPERTY TRUST

                    NOTICE OF SPECIAL MEETING OF SHAREHOLDERS

                            To Be Held           , 2000
                                       ----------

Dear Shareholder:

         The Board of Trust  Managers  of Grove  Property  Trust  ("Grove")  has
scheduled a special meeting of shareholders for        a.m.,   Eastern  time, on
               ,              ,  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  (the "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.  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.  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.  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 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
              , 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

               , 2000
--------- -----



                                       2

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.

<PAGE>


                                        2

                                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
   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..................................................7
   Federal or State Regulatory Approvals Needed and Filings Made...............7
   Dissenters' Rights..........................................................7
   Tax Consequences............................................................8
   Conflicts of Interest.......................................................8
   Break-Up Fee................................................................8
THE SPECIAL MEETING............................................................9
   Proxies and Voting..........................................................9
THE TRANSACTIONS...............................................................9
   Terms of the Transactions...................................................9
BACKGROUND OF THE TRANSACTION.................................................11
   Description of Grove and Grove L.P.'s Business.............................11
   Reasons for the Mergers....................................................12
   Reasons for the Retail Agreement...........................................17
   Recommendation of the Board of Trust Managers..............................17
   Opinion of Financial Advisor-Grove.........................................18
   Summary of Analyses Performed by Houlihan Lokey............................19
   Summary of Appraisals of Retail Properties by Italia & Lemp, Inc...........22
   Effective Time of the Transactions.........................................24
THE MERGER AGREEMENT..........................................................24
   Representation and Warranties..............................................24
   Conditions to the Transactions.............................................25
   Dividends..................................................................26
   Termination Provisions.....................................................26
   Termination Fee and Expenses...............................................27
   No Solicitation of Other Transactions......................................28
   Conduct of Business Pending the Transactions...............................28
   Waiver and Amendment.......................................................29
   Possible Dividend Reductions...............................................30
RETAIL AGREEMENT..............................................................30
   Parties....................................................................30
   Overview...................................................................30
   Redemption Payment.........................................................30
   Expenses of Transfer.......................................................31
   Relationship to Mergers....................................................31
NO APPRAISAL RIGHTS...........................................................31
CONVERSION OF UNITS/SHARES....................................................31


<PAGE>


   Conversion of the Grove Shares.............................................31
   Conversion of the Grove L.P. Units.........................................31
EXPECTED FEDERAL INCOME TAX CONSEQUENCES TO THE HOLDERS OF
GROVE COMMON SHARES...........................................................32
   Consequences to Grove......................................................32
   Consequences to the Shareholders...........................................32
   Taxation of Non-United States Shareholders.................................32
MATTERS FOLLOWING THE EFFECTIVENESS OF THE MERGERS............................33
   Surrender of and Payment for Shares........................................33
   Certain Effects of the Merger..............................................33
INTERESTS OF CERTAIN PERSONS IN THE TRANSACTIONS..............................34
MARKET PRICE OF AND DIVIDENDS ON GROVE COMMON SHARES..........................35
PRINCIPAL SHAREHOLDERS OF GROVE...............................................35
   Security Ownership of Trust Managers and Executive Officers................35
   Security Ownership of Certain Beneficial Owners............................37
LITIGATION....................................................................38
FORWARD LOOKING STATEMENTS....................................................39
OTHER MATTERS.................................................................40
FUTURE SHAREHOLDER PROPOSALS..................................................40

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




                                        2
<PAGE>



Proxy Statement
---------------

                              GROVE PROPERTY TRUST
                                598 Asylum Avenue
                               Hartford, CT 06105

                                 (860) 246-1126

                   Special Meeting of Shareholders to be Held
                   ------------------------------------------
                               on [        ], 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 ______ a.m.,
Eastern time,  on ________,  _________,  2000 at The Hartford  Club, 45 Prospect
Street,  Hartford,  Connecticut,  and at any adjournments thereof. The Board has
fixed  the  close  of  business  on  __________,  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
________, 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 the enclosed  proxy  statement,  including  the  attachments
thereto.  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. 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 or into
0.3696  of a  common  unit of ERP.  Completion  of the  mergers  is  subject  to
satisfaction  of a  number  of  conditions  which  are  outlined  in  the  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 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    Grovewould 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. See "The Transactions-Terms of the Transactions."

     o    The  receipt  of cash in the  mergers  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 unanimously
          recommends 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 "Representations and Warranties-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  Group,  Inc.,  holding an  aggregate  of 31.6% of the
          outstanding  Grove  common  shares,  have  agreed to vote their  Grove
          common shares to approve the merger and the transactions  contemplated
          by the merger agreement.


<PAGE>


     o    Grove L.P.  unitholders  owning at least two-thirds of the outstanding
          Grove L.P. units must vote to approve the merger and the  transactions
          contemplated  by the merger  agreement.  Grove,  as general partner of
          Grove L.P.,  has agreed to vote its 68.1%  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 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.

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 Grove  merger  agreement  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.  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.

                                       2
<PAGE>

Q:     Do I have dissenters' rights?

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

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 facts of your own situation.

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

A:     We hope to complete the mergers on  __________,  2000,  the day after 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.

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 Group,
       Inc. 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% 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 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  mergers  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:

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

       *   deliver later-dated proxy instructions; or

       *   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 54  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% 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.  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,
or (ii) 0.3696 of an ERP unit per Grove L.P. unit owned.  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,  and the value of
an ERP unit  received can increase or decrease  based upon the then market 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).

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 amount of this excess.



                                       6
<PAGE>


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 non-employee trust managers
and 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.  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.

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  Group,  Inc. have each signed a  shareholder/partner  voting  agreement
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%
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, at least two-thirds
of the  unitholders of Grove L.P. 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.   Grove  L.P.
unitholders are not entitled to dissenters' rights or other rights of


                                       7
<PAGE>


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  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.

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 EQR if the merger
agreement is  terminated  by either EQR 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 EQR or Grove  under  other  circumstances,  either EQR 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.



                                       8
<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 ___________
common  shares of Grove issued and  outstanding.  Approval of the merger and the
transactions  contemplated by the merger agreement  require 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 ITS APPROVAL BY GROVE SHAREHOLDERS.  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  AGREEMENT 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 the 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.



                                       9
<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 54 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 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 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 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:

          -    ERP will form New LLC3.

          -    New LLC3 and Grove will merge.

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

          -    Grove  shareholders  will  receive  $17.00 per Grove common share
               owned.

          -    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.

          -    ERP will remain:  (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,  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:

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

          -    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.

          -    The limited  partners of Grove L.P.  may elect to receive  either
               (i) $17.00 or (ii)  0.3696  ERP units 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.


                                       10
<PAGE>


         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 and the  assumption of  approximately  $7.5 million of
debt by the  executives'  entity.  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.

         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


                                       11
<PAGE>


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 Groves  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 of 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 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

                                       12
<PAGE>


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:

          -    Grove could remain  independent and pursue its business
               strategy;

          -    Grove could pursue a management leveraged buyout;

          -    Grove  could  sell  its  portfolio  of  properties  and
               liquidate;

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

          -    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 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,
the  Company'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


                                  13
<PAGE>


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,  the
Company'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 the Company's Chief Investment  Officer and  representatives
of the Company's counsel and its advisor, Jennings Securities LLC. The Company'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 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


                                       14
<PAGE>


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,  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,  and 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.  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.  They noted that Grove had
historically  paid their 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


                                       15
<PAGE>


         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
and 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 approximately $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
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
were 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.

         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.


                                       16
<PAGE>


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.

Recommendation of the Board of Trust Managers
---------------------------------------------

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


                                       17
<PAGE>


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,  or  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 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.


                                       18
<PAGE>


          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 Annex 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 of the
mergers,  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 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.


                                       19
<PAGE>


         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 of less
than $17.00.

         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  appropriate  capitalization  rates  to the net  operating
income of Grove's properties,  as discussed above,  Houlihan Lokey calculated an
enterprise value of Grove, which implied a price per share of less than $17.00.

         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 of less than
$17.00.

         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 of less than $17.00.

         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").

         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 Retail Property as of


                                       20
<PAGE>


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 Exchange, as discussed below.

         Based upon the Retail  Exchange Value of $19.0 million,  Houlihan Lokey
determined  the  equity  value   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  unitholder's 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 upon the transfer of the Retail Properties
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 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


                                       21
<PAGE>


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;

          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;

                                       22
<PAGE>


          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.

         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


                                       23
<PAGE>


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 will take place on a date to be
specified  by ERP,  Grove and Grove L.P.  which  will be as soon as  practicable
following  approval of the merger  transactions by Grove  shareholders and Grove
L.P.  unitholders and the  satisfaction or waiver of the pre-closing  conditions
set forth in the merger agreement.

                              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;

          o    third party and related party transactions;

          o    employee benefits and other matters;


                                       24
<PAGE>


          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 the Grove shareholders and the 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;

          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;


                                       25
<PAGE>


          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; and

          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,  (ii) the retail agreement's being consummated
               in  accordance  with its terms,  and (iii)  Grove's  obtaining an
               agreement satisfactorily resolving certain potential liabilities,
               provided that the costs  associated with obtaining such agreement
               do not  exceed  specified  amounts,  unless ERP agrees to pay the
               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 specified preset amounts.
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  5.6 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);

          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


                                       26
<PAGE>


               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; and

          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 the 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 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  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.

                                       27
<PAGE>


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:

          o    preserve their 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,  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  nor 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;

          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;


                                       28
<PAGE>


          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
               businesses.

         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:

          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,  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.

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;


                                       29
<PAGE>



          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 EQR and the Grove Board of Trust
Managers, at any time before or after the approval by the Grove shareholders and
Grove L.P.  unitholders and prior to the filing of the certificate of merger and
the  articles of merger.  After  approval of the merger  agreement  by the Grove
shareholders and the 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.

Possible Dividend Reductions
----------------------------

         If the sum of specified Grove and Grove L.P. transaction costs plus the
cost of the Grove's fairness opinion exceeds  $13,002,586,  the excess amount of
transaction costs will be offset against dividends and partnership distributions
that would have been paid to the Grove  shareholders and Grove L.P.  unitholders
for the dividend/distribution short period prior to which the closing occurs. If
the short  period  dividends or  distributions  are not enough to pay the excess
transaction  costs, any regular quarterly  dividend/distribution  may be changed
prior to the closing in order to pay the entire amount of excess cost.

                                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 Grove Realty 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  partnership unit
cash merger consideration; plus
                           ----


                                       30
<PAGE>


         2. The  approximately  $7.5  million  principal  amount of a loan to be
assumed by Grove Realty; less

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

         Grove  Realty 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  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 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,  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 of a limited  partnership  interest
in ERP or $17.00 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:


                                       31
<PAGE>


          o    $17.00 per Grove L.P.  unit or 0.3696 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.

         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.


                                       32
<PAGE>


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.  As soon as  practicable
following the effectiveness of the company merger,            , 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  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. 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 the cash.  Trading
in Grove common shares on the American Stock Exchange will cease at         p.m.
Eastern  time on                           .  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.
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  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).


                                       33
<PAGE>


                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 (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.  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.


                                  PAYMENTS TO BE RECEIVED       PAYMENTS IN
  NAME OF EXECUTIVE OFFICER OR      UPON TERMINATION OF      RESPECT OF STOCK
         TRUST MANAGER                  EMPLOYMENT               OPTIONS

      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

         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  effectiveness  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 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.



                                       34
<PAGE>


         For a  description  of the  interest of D.  Navarro,  J.  LaBrosse,  E.
Navarro,  and B. Navarro in the transfer of the retail properties  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       shareholders of record
as of the record date for the special meeting.

<TABLE>
<CAPTION>
                                                                                 Dividends per
                                                                                    Common
                                                        High            Low          Share
                                                        ----            ---          -----

<S>                                                    <C>            <C>            <C>
1998
----
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       , 2000)..........
                                                        ------        -------        -----
</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  officers,  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 exercising such option. 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."



                                       35
<PAGE>




                                         Number of Common   Percentage of Common
      Name of Beneficial Owner(1)             Shares               Shares
      ------------------------          ----------------    --------------------
      Damon D. Navarro                      247,060 (2)             8.6%
      Joseph R. LaBrosse                    307,856 (3)             3.7%
      Edmund F. Navarro                     685,894 (4)             7.9%
      J. Timothy Morris                   1,700,766 (5)            20.6%
      James F. Twaddell                      45,773 (6)                *
      Harold V. Gorman                       14,725 (7)                *
      J. Joseph Garrahy                      17,224 (8)                *
      Brian A. Navarro                      707,406 (9)             8.1%
      Gerald A. McNamara                   134,766 (10)             1.6%
      Munawar A. Cheema                     98,863 (11)             1.2%
      Keith W. Munsell                       5,000 (12)                *
      Trust Managers and Named
      Executive Officers as a Group)
      (11 Persons)                       4,470,039 (13)            41.5%


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

*    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 109,294 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 by entities  managed by Morgan
     Stanley or an affiliate of Morgan Stanley as to which Mr. Morris has shared
     voting and  investment  power,  and 10,000  common  shares  which  could be
     acquired within 60 days upon exercise of options.
(6)  Includes  12,500  common  shares  which could be  acquired by Mr.  Twaddell
     within 60 days upon exercise of options.
(7)  Includes common shares which could be acquired by Mr. Gorman within 60 days
     upon exercise of options.
(8)  Includes 12,362 common shares which could be acquired by Mr. Garrahy within
     60 days upon exercise of options.


                                       36
<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  41,667 common shares which could be acquired by Mr. Cheema within
     60 days upon exercise of options.
(12) Includes  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 777,199  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.

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

MORGAN STANLEY GROUP, INC.                         700,766 (1)        20.0%
1221 Avenue of the Americas
22nd Floor
New York, NY 10020

OREGON PUBLIC EMPLOYEES' RETIREMENT
   FUND AND LASALLE INVESTMENT                     012,729 (2)        10.1%
Management (Securities) L.P.
100 East Pratt Street, 20th Floor
Baltimore, MD 21202

WELLINGTON MANAGEMENT COMPANY, LLP                 801,400 (3)         8.0%
75 State Street
Boston, MA 02109

DAMON D. NAVARRO                                   751,766 (4)         8.0%
c/o Grove Property Trust
598 Asylum Avenue
Hartford, CT 06105

BRIAN D. NAVARRO                                   707,406 (5)         7.5%
c/o Grove Property Trust
598 Asylum Avenue
Hartford, CT 06105



                                       37
<PAGE>



                                                  Common Shares
                                                  Beneficially      Percent of
Name and Business Address of Beneficial Owner        Owned        Common Shares
----------------------------------------------- ---------------- ---------------
EDMUND F. NAVARRO                                  685,894 (6)         7.3%
c/o Grove Property Trust
598 Asylum Avenue
Hartford, CT 06105

CLIFFWOOD PARTNERS, LLC                            426,000 (7)         5.2%
11726 San Vicente Boulevard
Suite 600
Los Angeles, CA 90049


(1)  Morgan Stanley Group,  Inc. has advised that with respect to such shares it
     has sole voting and dispositive power.

(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 April 15, 2000.  Includes  323,784
     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 April 15, 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 April 15, 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.

                                   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.


                                       38
<PAGE>


         The complaint refers to the proposed mergers  involving Grove and Grove
L.P., and the proposed  transfer of Grove's four retail  properties to a limited
liability company owned by four 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
agreement  to  transfer  such  retail  properties  to an  entity  owned  by such
officers.

         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,  in recent
               years, which have fluctuated considerably;

          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.

         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.


                                       39
<PAGE>


                                  OTHER MATTERS

         Pursuant  to Grove's  by-laws,  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.


                                       40
<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 OF CONTENTS
                                -----------------

Article                                                                     Page
-------                                                                     ----

THE MERGER.....................................................................2
     1.1   The Partnership Merger..............................................2
     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.........3
     1.6   Effect of Partnership Merger on Agreement of Limited
             Partnership.......................................................3
     1.7   Effect of Partnership Merger on Grove LP Units......................3
     1.8   Effect of Company Merger on Shares..................................4
     1.9   Receipt of Consideration............................................5
     1.10  Transfer Books......................................................7
     1.11  No Further Ownership Rights in Shares...............................7
     1.12  Adjustment to Merger Consideration..................................8

REPRESENTATIONS AND WARRANTIES OF GROVE AND GROVE OP...........................8
     2.1   Organization, Standing and Power of Grove...........................8
     2.2   Grove Subsidiaries..................................................9
     2.3   Capital Structure..................................................11
     2.4   Other Interests and Sale Obligations...............................12
     2.5   Authority; Noncontravention; Consents..............................12
     2.6   SEC Documents; Financial Statements; Undisclosed Liabilities.......14
     2.7   Absence of Certain Changes or Events...............................15
     2.8   Litigation.........................................................15
     2.9   Properties.........................................................16
     2.10  Environmental Matters..............................................19
     2.11  Consultants and Related Party Transactions.........................20
     2.12  Employee Benefits..................................................21
     2.13  Employee Matters...................................................23
     2.14  Taxes..............................................................23
     2.15  No Payments to Employees, Officers, Trustees or Directors..........24
     2.16  Brokers; Schedule of Fees and Expenses.............................25
     2.17  Compliance with Laws...............................................25
     2.18  Contracts; Debt Instruments........................................25
     2.19  Opinion of Financial Advisor.......................................28
     2.20  State Takeover Statutes............................................28
     2.21  Registration Statement.............................................28
     2.22  Development Properties.............................................28
     2.23  Investment Company Act of 1940.....................................28
     2.24  Trademarks, Patents and Copyrights.................................28
     2.25  Insurance..........................................................29
     2.26  Definition of Knowledge of Grove...................................29
     2.27  Vote Required......................................................29


                                       i
<PAGE>


     2.28  Secured Credit Facility............................................29
     2.29  Assumption of Secured Debt.........................................29
     2.30  Certain Fees.......................................................29

REPRESENTATIONS AND WARRANTIES OF ERP.........................................30
     3.1   Organization, Standing and Power of ERP............................30
     3.2   Capital Structure of ERP...........................................30
     3.3   Authority; Noncontravention; Consents..............................30
     3.4   SEC Documents; Financial Statements; Undisclosed Liabilities.......31
     3.5   Absence of Certain Changes or Events...............................32
     3.6   Litigation.........................................................32
     3.7   Properties.........................................................33
     3.8   Environmental Matters..............................................33
     3.9   Taxes..............................................................34
     3.10  Brokers............................................................34
     3.11  Compliance with Laws...............................................34
     3.12  Contracts; Debt Instruments........................................35
     3.13  State Takeover Statutes............................................35
     3.14  Registration Statement.............................................35
     3.15  Investment Company Act of 1940.....................................35
     3.16  Definition of Knowledge of ERP.....................................35
     3.17  Vote Required......................................................35
     3.18  Employee Policies..................................................35
     3.19  Financing..........................................................35
     3.20  Validity of Securities Issued......................................36

COVENANTS.....................................................................36
     4.1   Acquisition Proposals..............................................36
     4.2   Conduct of Grove's Business Pending Merger.........................37
     4.3   Conduct of ERP's Business Pending Merger...........................40
     4.4   Other Actions......................................................41
     4.5   Compliance with the Securities Act.................................41

ADDITIONAL COVENANTS..........................................................42
     5.1   Preparation of the Registration Statement and the Proxy
             Statement; Grove Shareholders Meeting and Grove OP Partners
             Meeting..........................................................42
     5.2   Access to Information: Confidentiality.............................43
     5.3   Best Efforts; Notification.........................................44
     5.4    Costs of Transaction..............................................44
     5.5   Public Announcements...............................................44
     5.6   Taxes..............................................................45
     5.7   Benefit Plans and Other Employee Arrangements......................45
     5.8   Indemnification....................................................46
     5.9   Declaration of Dividends and Distributions.........................47
     5.10  Notices............................................................48
     5.11  Resignations.......................................................48
     5.12  Third Party Management Agreements and Outside
             Management Agreements............................................48


                                       ii
<PAGE>


     5.13  Modification of Rosenthal Transaction..............................49
     5.14  Retail Sale Agreement..............................................49
     5.15. Election to Undertake Deficit Restoration Obligation
             Under ERP Agreement..............................................49
     5.16  Transfer of Grove LP Units.........................................49
     5.17  Transfer of Grove Corp. Shares.....................................49

CONDITIONS....................................................................50
     6.1   Conditions to Each Party's Obligation to Effect the Mergers........50
     6.2   Conditions to Obligations of ERP...................................50
     6.3   Conditions to Obligations of Grove.................................52

TERMINATION, AMENDMENT AND WAIVER.............................................53
     7.1   Termination........................................................53
     7.2   Certain Fees and Expenses..........................................54
     7.3   Effect of Termination..............................................56
     7.4   Amendment..........................................................56
     7.5   Extension; Waiver..................................................56

GENERAL PROVISIONS............................................................57
     8.1   Nonsurvival of Representations and Warranties......................57
     8.2   Notices............................................................57
     8.3   Interpretation.....................................................58
     8.4   Counterparts.......................................................58
     8.5   Entire Agreement; No Third-Party Beneficiaries.....................58
     8.6   Governing Law......................................................58
     8.7   Assignment.........................................................58
     8.8   Enforcement........................................................58
     8.9   Severability.......................................................59
     8.10  Non-Recourse to Trustees and Officers..............................59




                                    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:



<PAGE>


                                    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").

     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


                                       2
<PAGE>


               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 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.


                                       3
<PAGE>


          (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


                                       4
<PAGE>


          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.

     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


                                       5
<PAGE>


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.

          (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").


                                       6
<PAGE>


          (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 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


                                       7
<PAGE>


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


                                       8
<PAGE>


sets forth each  jurisdiction  in which  Grove is  qualified  or  licensed to do
business,  as well as all assumed names under which 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


                                       9
<PAGE>


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 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).


                                       10
<PAGE>


     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 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


                                       11
<PAGE>


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 Grove OP Units, including


                                       12
<PAGE>


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


                                       13
<PAGE>


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.

     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


                                       14
<PAGE>


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 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


                                       15
<PAGE>


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


                                       16
<PAGE>


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 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.


                                       17
<PAGE>



          (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 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


                                       18
<PAGE>


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:

          (a)  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;

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

          (c)  the regulation of storage tanks; or

          (d)  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,


                                       19
<PAGE>


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


                                       20
<PAGE>


liabilities  (the "Retail Sale  Agreement")  and the  transactions  contemplated
therein, (ii) the Retail 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


                                       21
<PAGE>


               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;

          (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.


                                       22
<PAGE>



          (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.

     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


                                       23
<PAGE>


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


                                       24
<PAGE>


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  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


                                       25
<PAGE>


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
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


                                       26
<PAGE>


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 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.


                                       27
<PAGE>


          (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


                                       28
<PAGE>


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,  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.


                                       29
<PAGE>


                                   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,  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


                                       30
<PAGE>


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 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


                                       31
<PAGE>


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.


                                       32
<PAGE>


     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.

          (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.


                                       33
<PAGE>


     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 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


                                       34
<PAGE>


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.

     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.


                                       35
<PAGE>


     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


                                       36
<PAGE>


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 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;


                                       37
<PAGE>


          (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 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


                                       38
<PAGE>


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;

          (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


                                       39
<PAGE>


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:

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


                                       40
<PAGE>


          (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.


                                       41
<PAGE>


                                   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  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


                                       42
<PAGE>


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.

     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").


                                       43
<PAGE>


     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
purposes of this Section 5.5, "written public statements" shall


                                       44
<PAGE>


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


                                       45
<PAGE>


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 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


                                       46
<PAGE>


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.

          (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


                                       47
<PAGE>


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.


                                       48
<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


                                       49
<PAGE>


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.

          (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.


                                       50
<PAGE>


          (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,  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")


                                       51
<PAGE>


     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 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.


                                       52
<PAGE>


          (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;


                                       53
<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


                                       54
<PAGE>


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.

          (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


                                       55
<PAGE>


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 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,


                                       56
<PAGE>


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


                                       57
<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


                                       58
<PAGE>


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.

     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.


                                       59
<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 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 LaBrosse
                                        ---------------------------------------
                                   Title: Chief Financial Officer
                                         --------------------------------------



                                       60
<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.


<PAGE>


     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.

          "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.  ss.ss.  9601 ET SEQ, as amended from time to
     time.


                                       2
<PAGE>


          "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.

          "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.


                                       3
<PAGE>


          "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.ss.ss. 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).


                                       4
<PAGE>


                                    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 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


                                       5
<PAGE>


     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


                                       6
<PAGE>


     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  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


                                       7
<PAGE>


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 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:


                                       8
<PAGE>


          (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


                                       9
<PAGE>


     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.

          (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


                                       10
<PAGE>


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:

          (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.


                                       11
<PAGE>


     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


                                       12
<PAGE>


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,  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.


                                       13
<PAGE>


     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 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.


                                       14
<PAGE>


          (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:


                                       15
<PAGE>


          (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,
     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


                                       16
<PAGE>


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

                        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


                                       17
<PAGE>


                           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.

     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


                                       18
<PAGE>


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.


                                       19
<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 LaBrosse
                                            -----------------------------------
                                       Title: Chief Financial Officer
                                             ----------------------------------

                                  GROVE REALTY LLC, a Delaware limited liability
                                  company


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

                                  /s/ DAMON D. NAVARRO
                                  ---------------------------------------------
                                  DAMON D. NAVARRO

                                  /s/ BRIAN A. NAVARRO
                                  ---------------------------------------------
                                  BRIAN A. NAVARRO

                                  /s/ EDMUND F. NAVARRO
                                  ---------------------------------------------
                                  EDMUND F. NAVARRO

                                  /s/ JOSEPH R. LaBROSSE
                                  ---------------------------------------------
                                  JOSEPH R. LABROSSE



<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




<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 LaBrosse
                                            -----------------------------------
                                       Title: Chief Financial Officer
                                             ----------------------------------





<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                             2. Other Business:
   Grove Property Trust           [ ]    [ ]      [ ]       In their discretion,
   ("Grove") into a                                         the proxies are
   subsidiary of ERP                                        authorized to vote
   Operating Limited                                        upon such other
   Partnership ("ERP"),                                     business as may
   pursuant to an Agreement                                 properly be brought
   and Plan of Merger, dated                                before the meeting.
   as of July 17, 2000 among
   Grove, Grove Operating,
   L.P. and ERP, and the
   other transactions
   contemplated by the merger
   agreement.

      MARK HERE FOR ADDRESS                MARK HERE IF YOU PLAN TO
      CHANGE AND NOTE AT LEFT   [ ]        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      , 2000
          -----------------------     ------

Signature                         Date      , 2000
          -----------------------     ------


<PAGE>

                                   DETACH HERE


                              GROVE PROPERTY TRUST

          P        The  undersigned  hereby appoints Damon D. Navarro and Joseph
                   R. LaBrosse, and each of them, as proxies, with full power of
          R        substitution  in each,  to vote the shares of Grove  Property
                   Trust  (the  "Company")  of the  undersigned  at the  Special
          O        Meeting of the Shareholders to be held on                   ,
                                     ,  2000 at                      a.m. at The
          X        Hartford  Club,  46 Prospect  Street,  Hartford,  Connecticut
                   06103 and any adjournment thereof as specified on the reverse
          Y        side.

                                                                ----------------
(continued on reverse side)                                     SEE REVERSE SIDE
                                                                ----------------


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