POST APARTMENT HOMES LP
8-K, 1997-08-06
OPERATORS OF APARTMENT BUILDINGS
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<PAGE>   1
===============================================================================


                      SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C. 20549

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

                                   FORM 8-K

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

       Date of Report: (Date of earliest event reported): August 1, 1997

                             Post Apartment Homes, L.P.
              --------------------------------------------------
              (Exact name of Registrant as Specified in Charter)

         Georgia                      0-28226                   58-2053632
- ----------------------------  ------------------------     -------------------
(State or Other Jurisdiction  (Commission File Number)       (IRS Employer
  of Incorporation)                                        Identification No.)

 3350 Cumberland Circle, Atlanta, Georgia                        30339
 ----------------------------------------                      ----------
(Address of Principal Executive Offices)                       (Zip Code)

   Registrant's telephone number, including area code: (770) 850-4400

                                 Not Applicable
         -------------------------------------------------------------
         (Former Name or Former Address, if Changed Since Last Report)



===============================================================================
<PAGE>   2



Item 5. Other Events

On August 4, 1997, Post Properties, Inc., the general partner of the Registrant
("Post"), announced that it has entered into a definitive agreement and plan of
merger with Columbus Realty Trust, a Texas real estate investment trust
("Columbus"), pursuant to which Columbus would be merged into a wholly owned
subsidiary of Post (the "Merger Agreement"). Columbus currently operates 24
completed communities containing 6,045 apartment units and has an additional
six communities under development that will contain 1,481 apartment units upon
completion located in Dallas and Houston, Texas and Jackson, Mississippi.
Pursuant to the Merger Agreement, each outstanding share of Columbus common
shares will be converted into .615 shares of common stock of Post, which will
result in the issuance of approximately 8.4 million shares of common stock of
Post. The merger, which will be accounted for as a purchase, is expected to be
completed in November l997, subject to the approval of the shareholders of Post
and Columbus and other customary conditions.

        For further information concerning the merger and the Merger Agreement,
see Exhibits 2 and 99 hereto, which are incorporated herein by reference.

Item 7. Financial Statement, Pro Forma Financial Information and Exhibits.

        (c) Exhibits.

            Exhibit 2  - Agreement and Plan of Merger, dated as of August 1,
                         1997, among Post Properties, Inc., Post LP Holdings, 
                         Inc. and Columbus Realty Trust

            Exhibit 99 - Press Release dated August 4, 1997




<PAGE>   3



                                   SIGNATURES

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


                                     POST APARTMENT HOMES, L.P.
                                     (Registrant)                       



                                     By:        POST PROPERTIES, INC. 
                                                as general partner


Date: August 6, 1997                             By: /s/ John A. Williams
                                                    -----------------------
                                                         John A. Williams
                                                         Chairman of the Board,
                                                         Chief Executive Officer
                                                         and Director


<PAGE>   4



                               INDEX TO EXHIBITS

Exhibit    Number and Description

    2      Agreement and Plan of Merger, dated as of August 1, 1997, among
           Post Properties, Inc., Post LP Holdings, Inc. and Columbus Realty
           Trust.

   99      Press Release dated August 4, 1997.




<PAGE>   1
 
                                                                       EXHIBIT 2
 
                          AGREEMENT AND PLAN OF MERGER
 
                          DATED AS OF AUGUST 1, 1997,
 
                                  BY AND AMONG
 
                             POST PROPERTIES, INC.
 
                             POST LP HOLDINGS, INC.
 
                                      AND
 
                             COLUMBUS REALTY TRUST
<PAGE>   2
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                 PAGE
                                                                                 ----
<S>        <C>     <C>                                                           <C>
ARTICLE I -- THE MERGER........................................................
  SECTION  1.1     The Merger..................................................
  SECTION  1.2     Closing.....................................................
  SECTION  1.3     Effective Time..............................................
  SECTION  1.4     Effects of the Merger.......................................
  SECTION  1.5     Articles of Incorporation and Bylaws........................
  SECTION  1.6     Board of Directors..........................................
  SECTION  1.7     Officers....................................................
ARTICLE II -- EFFECT OF THE MERGER ON THE CAPITAL STOCK OF THE CONSTITUENT
              CORPORATIONS; EXCHANGE OF CERTIFICATES...........................
  SECTION  2.1     Effect on Capitalization....................................
           2.1.1   Cancellation of Treasury Stock..............................
           2.1.2   Conversion of Common Shares.................................
           2.1.3   Shares of Acquiror Common Stock.............................
           2.1.4   Shares of Merger Sub........................................
  SECTION  2.2     Exchange of Certificates....................................
           2.2.1   Exchange Agent..............................................
           2.2.2   Acquiror To Provide Merger Consideration....................
           2.2.3   Exchange Procedure..........................................
           2.2.4   Record Dates for Final Dividends; Distributions with Respect
                   to Unexchanged Shares.......................................
           2.2.5   No Further Ownership Rights in Common Shares................
           2.2.6   No Liability................................................
           2.2.7   No Fractional Shares........................................
           2.2.8   Withholding Rights..........................................
ARTICLE III -- REPRESENTATIONS AND WARRANTIES..................................
  SECTION  3.1     Representations and Warranties of the Company...............
           3.1.1   Organization, Standing and Power of the Company.............
           3.1.2   Company Subsidiaries........................................
           3.1.3   Capital Structure...........................................
           3.1.4   Authority; Noncontravention; Consents.......................
           3.1.5   SEC Documents; Financial Statements; Undisclosed
                   Liabilities.................................................
           3.1.6   Absence of Certain Changes or Events........................
           3.1.7   Litigation..................................................
           3.1.8   Properties..................................................
           3.1.9   Environmental Matters.......................................
           3.1.10  Related Party Transactions..................................
           3.1.11  Absence of Changes in Benefit Plans; ERISA Compliance.......
           3.1.12  Taxes.......................................................
           3.1.13  No Payments to Employees, Officers or Trust Managers........
           3.1.14  Brokers; Schedule of Fees and Expenses......................
           3.1.15  Compliance with Laws........................................
           3.1.16  Contracts; Debt Instruments.................................
           3.1.17  State Takeover Statutes.....................................
           3.1.18  Registration Statement; Proxy Statement.....................
           3.1.19  Hart-Scott-Rodino Antitrust Improvements Act of 1976........
           3.1.20  Vote Required...............................................
           3.1.21  Opinion of Financial Advisor................................
           3.1.22  Investment Company Act of 1940..............................
</TABLE>
 
                                       (i)
<PAGE>   3
 
<TABLE>
<CAPTION>
                                                                                 PAGE
                                                                                 ----
<S>        <C>     <C>                                                           <C>
           3.1.23  Insurance...................................................
           3.1.24  The Company's Rights Agreement..............................
  SECTION  3.2     Representations and Warranties of Acquiror..................
           3.2.1   Organization, Standing and Corporate Power of Acquiror and
                   Merger Sub..................................................
           3.2.2   Acquiror Subsidiaries.......................................
           3.2.3   Capital Structure...........................................
           3.2.4   Authority; Noncontravention; Consents.......................
           3.2.5   SEC Documents; Financial Statements; Undisclosed
                   Liabilities.................................................
           3.2.6   Absence of Certain Changes or Events........................
           3.2.7   Litigation..................................................
           3.2.8   Properties..................................................
           3.2.9   Environmental Matters.......................................
           3.2.10  Absence of Changes in Benefit Plans; ERISA Compliance.......
           3.2.11  Taxes.......................................................
           3.2.12  No Payments to Employees, Officers or Directors.............
           3.2.13  Brokers; Schedule of Fees and Expenses......................
           3.2.14  Compliance with Laws........................................
           3.2.15  Contracts; Debt Instruments.................................
           3.2.16  State Takeover Statutes.....................................
           3.2.17  Registration Statement; Proxy Statement.....................
           3.2.18  Hart-Scott-Rodino Antitrust Improvements Act of 1976........
           3.2.19  Vote Required...............................................
           3.2.20  Opinion of Financial Advisor................................
           3.2.21  Investment Company Act of 1940..............................
           3.2.22  Insurance...................................................
           3.2.23  Interim Operations of Merger Sub............................
ARTICLE IV -- COVENANTS........................................................
  SECTION  4.1     Conduct of Business by the Company..........................
  SECTION  4.2     Conduct of Business by Acquiror.............................
  SECTION  4.3     Other Actions...............................................
ARTICLE V -- ADDITIONAL COVENANTS..............................................
  SECTION  5.1     Preparation of the Registration Statement and the Proxy
                   Statement; Company Shareholders Meeting and Acquiror
                   Shareholders Meeting........................................
  SECTION  5.2     Access to Information: Confidentiality......................
  SECTION  5.3     Commercially Reasonable Efforts; Notification...............
  SECTION  5.4     Affiliates..................................................
  SECTION  5.5     Tax Treatment...............................................
  SECTION  5.6     Acquiror Board of Directors.................................
  SECTION  5.7     No Solicitation of Transactions by the Company..............
  SECTION  5.8     No Solicitation of Transactions by Acquiror.................
  SECTION  5.9     Public Announcements........................................
  SECTION  5.10    Listing.....................................................
  SECTION  5.11    Letters of Accountants......................................
  SECTION  5.12    Transfer and Gains Taxes....................................
  SECTION  5.13    Benefit Plans and Other Employee Arrangements...............
           5.13.1  Benefit Plans...............................................
           5.13.2  Stock Incentive Plan........................................
           5.13.3  Cooperation.................................................
  SECTION  5.14    Indemnification; Directors' and Officers' Insurance.........
  SECTION  5.15    The Company Rights Plan.....................................
</TABLE>
 
                                      (ii)
<PAGE>   4
 
<TABLE>
<CAPTION>
                                                                                 PAGE
                                                                                 ----
<S>        <C>     <C>                                                           <C>
ARTICLE VI -- CONDITIONS PRECEDENT.............................................
  SECTION  6.1     Conditions to Each Party's Obligation To Effect the
                   Merger......................................................
           6.1.1   Shareholder Approvals.......................................
           6.1.2   Listing of Shares...........................................
           6.1.3   Registration Statement......................................
           6.1.4   No Injunctions or Restraints................................
           6.1.5   Related Transactions........................................
  SECTION  6.2     Conditions to Obligations of Acquiror and Merger Sub........
           6.2.1   Representations and Warranties..............................
           6.2.2   Performance of Obligations of the Company...................
           6.2.3   Material Adverse Change.....................................
           6.2.4   Opinions Relating to REIT...................................
           6.2.5   Other Tax Opinion...........................................
           6.2.6   Consents....................................................
  SECTION  6.3     Conditions to Obligations of the Company....................
           6.3.1   Representations and Warranties..............................
           6.3.2   Performance of Obligations of Acquiror......................
           6.3.3   Material Adverse Change.....................................
           6.3.4   Opinion Relating to REIT Status.............................
           6.3.5   Other Tax Opinion...........................................
           6.3.6   Consents....................................................
ARTICLE VII -- BOARD ACTIONS...................................................
  SECTION  7.1     Company Board Actions.......................................
  SECTION  7.2     Acquiror Board Actions......................................
ARTICLE VIII -- TERMINATION, AMENDMENT AND WAIVER..............................
  SECTION  8.1     Termination.................................................
  SECTION  8.2     Expenses....................................................
  SECTION  8.3     Effect of Termination.......................................
  SECTION  8.4     Amendment...................................................
  SECTION  8.5     Extension; Waiver...........................................
ARTICLE IX -- DEFINITIONS AND CONSTRUCTION.....................................
  SECTION  9.1     Certain Definitions.........................................
  SECTION  9.2     Rules of Construction.......................................
ARTICLE X -- GENERAL PROVISIONS................................................
  SECTION  10.1    Nonsurvival of Representations and Warranties...............
  SECTION  10.2    Notices.....................................................
  SECTION  10.3    Counterparts................................................
  SECTION  10.4    Entire Agreement; No Third-Party Beneficiaries..............
  SECTION  10.5    Governing Law...............................................
  SECTION  10.6    Assignment..................................................
  SECTION  10.7    Enforcement.................................................
  SECTION  10.8    Severability................................................
</TABLE>
 
                                      (iii)
<PAGE>   5
 
EXHIBITS:
 
<TABLE>
<CAPTION>
                                                                                    PAGE
                                                                                    ----
<S>                   <C>                                                           <C>
A                     Form of Affiliates Letter...................................
SCHEDULES TO DISCLOSURE LETTERS:
Schedule 3.1.2        Company Subsidiaries........................................
Schedule 3.1.3        Capital Structure...........................................
 
Schedule 3.1.4        Authority; Noncontravention; Consents.......................
Schedule 3.1.5        SEC Documents, Financial Statements; Undisclosed
                      Liabilities.................................................
Schedule 3.1.6        Certain Changes or Events...................................
Schedule 3.1.7        Litigation..................................................
Schedule 3.1.8        Company Properties..........................................
Schedule 3.1.9        Environmental Matters.......................................
Schedule 3.1.10       Company Related Party Transactions..........................
Schedule 3.1.11(i)    Changes in Benefit Plans....................................
Schedule 3.1.11(ii)   ERISA Compliance............................................
Schedule 3.1.11(iii)  Change of Control Payments..................................
Schedule 3.1.12       Taxes.......................................................
Schedule 3.1.13       Payments to Employees, Officers or Trust Managers...........
Schedule 3.1.15       Compliance with Laws........................................
Schedule 3.1.16(i)    Contracts...................................................
Schedule 3.1.16(ii)   Debt Instruments............................................
Schedule 3.2.2        Acquiror Subsidiaries.......................................
Schedule 3.2.3        Acquiror Capital Structure..................................
Schedule 3.2.4        Authority; Noncontravention; Consents.......................
Schedule 3.2.5        Acquiror Liabilities........................................
Schedule 3.2.6        Certain Changes or Events...................................
Schedule 3.2.7        Litigation..................................................
Schedule 3.2.9        Environmental Matters.......................................
Schedule 3.2.10(i)    Changes in Benefit Plans....................................
Schedule 3.2.10(ii)   ERISA Compliance............................................
Schedule 3.2.11       Taxes.......................................................
Schedule 3.2.12       Payments to Employees, Officers or Directors................
Schedule 3.2.15       Contracts...................................................
Schedule 4.1          Conduct of Business by the Company (Exceptions to
                      Covenants)..................................................
Schedule 4.2          Conduct of Business by Acquiror (Exceptions to Covenants)...
Schedules 9.1         Persons with "Knowledge" of the Company or Acquiror.........
</TABLE>
 
                                       2
<PAGE>   6
 
     THIS AGREEMENT AND PLAN OF MERGER (this "Agreement") dated as of August 1,
1997 is made and entered into by and among Post Properties, Inc., a Georgia
corporation ("Acquiror"), Post LP Holdings, Inc., a Georgia corporation and a
direct wholly owned subsidiary of Acquiror ("Merger Sub"), and Columbus Realty
Trust, a Texas real estate investment trust (the "Company").
 
                                R E C I T A L S
 
     A. Certain capitalized terms used herein shall have the meanings assigned
to them in SECTION 9.1.
 
     B. The respective Boards of Directors of Acquiror and Merger Sub and the
Board of Trust Managers of the Company have approved the merger of the Company
with and into Merger Sub, Acquiror's direct wholly owned subsidiary, as set
forth below (the "Merger"), upon the terms and subject to the conditions set
forth in this Agreement, whereby each issued and outstanding common share of
beneficial interest, par value $.01 per share, of the Company (the "Common
Shares") will be converted into the right to receive the Merger Consideration.
 
     C. Acquiror, Merger Sub and the Company desire to make certain
representations, warranties, covenants and agreements in connection with the
Merger and also to prescribe various conditions to the Merger.
 
     D. For federal income tax purposes it is intended that the Merger qualify
as a reorganization within the meaning of Section 368(a) of the Internal Revenue
Code of 1986, as amended (the "Code").
 
     E. Simultaneously with the execution of this Agreement, Armada Homes, Inc.,
a subsidiary of the Company ("Armada"), Robert L. Shaw ("Shaw"), Will Cureton
("Cureton"), John A. Williams ("Williams") and John T. Glover ("Glover") have
entered into a Stock Purchase Agreement (the "Armada Stock Purchase Agreement")
providing for the sale by Shaw and Cureton of all the issued and outstanding
voting stock of Armada owned by Shaw and Cureton to Williams and Glover.
 
     F. Simultaneously with the execution of this Agreement, Addison Circle
Access, Inc., a subsidiary of the Company ("Addison"), Shaw, Cureton, Williams
and Glover have entered into a Stock Purchase Agreement (the "Addison Stock
Purchase Agreement") and together with the Armada Stock Purchase Agreement, the
"Stock Purchase Agreements") providing for the sale by Shaw and Cureton of all
the issued and outstanding voting stock of Addison owned by Shaw and Cureton to
Williams and Glover.
 
     G. The transactions contemplated by this Agreement, the Stock Purchase
Agreements and the other agreements and documents contemplated hereby,
including, without limitation, the Merger, shall be referred to collectively in
this Agreement as the "Transactions."
 
     NOW, THEREFORE, in consideration of the representations, warranties,
covenants and agreements contained in this Agreement, the parties hereto agree
as follows:
 
                                   ARTICLE I
 
                                   THE MERGER
 
     SECTION 1.1  THE MERGER.  Upon the terms and subject to the conditions set
forth in this Agreement, and in accordance with the Texas Real Estate Investment
Trust Act and the Georgia Business Corporation Code (collectively, the
"Governing Laws"), the Company shall be merged with and into Merger Sub at the
Effective Time. Following the Merger, the separate corporate existence of the
Company shall cease and Merger Sub shall continue as the surviving entity (the
"Surviving Company") and shall succeed to and assume all the rights and
obligations of the Company in accordance with the Governing Laws. At the
election of Acquiror, any other direct subsidiary of Acquiror acceptable to the
Company in its reasonable judgment may be substituted for Merger Sub as a
constituent corporation in the Merger. In such event, the parties agree to
execute an appropriate amendment to this Agreement in order to reflect such
substitution.
 
     SECTION 1.2  CLOSING.  The closing of the Merger will take place at 10:00
a.m., local time, on a date to be specified by the parties, which (subject to
satisfaction or waiver of the conditions set forth in SECTIONS 6.2
<PAGE>   7
 
and 6.3) shall be no later than the second business day after satisfaction or
waiver of the conditions set forth in ARTICLE VI (the "Closing Date"), at the
offices of King & Spalding, 191 Peachtree Street, Atlanta, Georgia 30303, unless
another date or place is agreed to by the parties hereto.
 
     SECTION 1.3  EFFECTIVE TIME.  As soon as practicable following the
satisfaction or waiver of the conditions set forth in ARTICLE VI, the parties
shall file the articles of merger or other appropriate documents (the "Articles
of Merger") executed in accordance with the Governing Laws and shall make all
other filings or recordings required under the Governing Laws. The Merger shall
become effective upon the filing of the Articles of Merger with the office of
the County Clerk of Dallas County, Texas and the office of the Secretary of
State of the State of Georgia (the "Applicable Bodies"), or at such later time
which Acquiror, Merger Sub and the Company have agreed upon and designated in
such filings in accordance with the Governing Laws (the time the Merger becomes
effective being the "Effective Time"), it being understood that the parties
shall cause the Effective Time to occur on the Closing Date.
 
     SECTION 1.4  EFFECTS OF THE MERGER.  The Merger shall have the effects set
forth in the Governing Laws.
 
     SECTION 1.5  ARTICLES OF INCORPORATION AND BYLAWS.  The Articles of
Incorporation of Merger Sub, as in effect immediately prior to the Effective
Time, shall be the Articles of Incorporation of the Surviving Company, until
duly amended in accordance with applicable law. The Bylaws of Merger Sub, as in
effect immediately prior to the Effective Time, shall be the Bylaws of the
Surviving Company, until duly amended in accordance with applicable law.
 
     SECTION 1.6  BOARD OF DIRECTORS.  The Board of Directors of Merger Sub
immediately prior to the Effective Time shall be the Board of Directors of the
Surviving Company until the earlier of their resignation or removal or until
their respective successors are duly elected and qualified, as the case may be.
 
     SECTION 1.7  OFFICERS.  The officers of Merger Sub immediately prior to the
Effective Time shall be the officers of the Surviving Company until the earlier
of their resignation or removal or until their respective successors are duly
elected and qualified, as the case may be.
 
                                   ARTICLE II
 
                EFFECT OF THE MERGER ON THE CAPITAL STOCK OF THE
               CONSTITUENT CORPORATIONS; EXCHANGE OF CERTIFICATES
 
     SECTION 2.1  EFFECT ON CAPITALIZATION.  By virtue of the Merger and without
any action on the part of the holder of any shares of Common Shares or the
holder of any shares of capital stock of Acquiror:
 
          2.1.1  CANCELLATION OF TREASURY STOCK.  As of the Effective Time, any
     shares of capital stock of the Company that are owned by the Company or any
     Company Subsidiary shall automatically be canceled and retired and all
     rights with respect thereto shall cease to exist, and no consideration
     shall be delivered in exchange therefor.
 
          2.1.2  CONVERSION OF COMMON SHARES.  Upon the Effective Time, each
     issued and outstanding share of Common Shares (other than any shares to be
     canceled in accordance with SECTION 2.1.1) shall be converted into the
     right to receive from Acquiror .615 (six hundred fifteen one-thousandths)
     of a fully paid and nonassessable share of Acquiror Common Stock (the
     "Exchange Ratio"). As of the Effective Time, all Common Shares shall no
     longer be outstanding and shall automatically be canceled and retired and
     all rights with respect thereto shall cease to exist, and each holder of a
     certificate representing any such Common Shares shall cease to have any
     rights with respect thereto, except the right to receive, upon surrender of
     such certificate in accordance with SECTION 2.2.3, certificates
     representing the shares of Acquiror Common Stock required to be delivered
     under this SECTION 2.1.2 and any cash in lieu of fractional shares of
     Acquiror Common Stock to be issued or paid in consideration therefor upon
     surrender of such certificate (the "Merger Consideration") as set forth in
     SECTION 2.2.7, and any dividends or other distributions to which such
     holder is entitled pursuant to SECTION 2.2.4, in each case without interest
     and less any required withholding taxes. The Exchange Ratio shall be
     adjusted to reflect fully the effect of any
 
                                        2
<PAGE>   8
 
     stock split, reverse stock split, stock dividend (including any dividend or
     distribution of securities convertible into Acquiror Common Stock or Common
     Shares), reorganization, recapitalization or other like change with respect
     to Acquiror Common Stock or Common Shares occurring after the date hereof
     and prior to the Effective Time.
 
          2.1.3  SHARES OF ACQUIROR COMMON STOCK.  Upon the Effective Time, each
     share of Acquiror Common Stock outstanding immediately prior to the
     Effective Time shall remain outstanding and shall represent one share of
     validly issued, fully paid and nonassessable Acquiror Common Stock.
 
          2.1.4  SHARES OF MERGER SUB.  Upon the Effective Time, each share of
     common stock, par value $.01 per share, of Merger Sub outstanding
     immediately prior to the Effective Time shall remain outstanding and shall
     represent one share of common stock, par value $.01 per share, of the
     Surviving Company.
 
     SECTION 2.2  EXCHANGE OF CERTIFICATES.
 
          2.2.1  EXCHANGE AGENT.  Prior to the Effective Time, Acquiror shall
     appoint, or shall cause to be appointed, Wachovia Bank of North Carolina or
     another bank or trust company reasonably acceptable to the Company to act
     as exchange agent (the "Exchange Agent") for the exchange of the Merger
     Consideration upon surrender of certificates representing issued and
     outstanding Common Shares.
 
          2.2.2  ACQUIROR TO PROVIDE MERGER CONSIDERATION.  Acquiror shall
     provide, or shall cause to be provided, to the Exchange Agent on or before
     the Effective Time, for the benefit of the holders of Common Shares, shares
     of Acquiror Common Stock issuable (the "Exchange Fund") in exchange for the
     issued and outstanding shares of Common Shares pursuant to SECTION 2.1.2
     and the cash payable in respect of fractional shares pursuant to SECTION
     2.2.7.
 
          2.2.3  EXCHANGE PROCEDURE.  As soon as reasonably practicable after
     the Effective Time, the Exchange Agent shall mail to each holder of record
     of a certificate or certificates which immediately prior to the Effective
     Time represented outstanding shares of Common Shares (the "Certificates")
     whose shares were converted into the right to receive the Merger
     Consideration pursuant to SECTION 2.1.2 (i) a letter of transmittal (which
     shall specify that delivery shall be effected, and risk of loss and title
     to the Certificates shall pass, only upon delivery of the Certificates to
     the Exchange Agent and shall be in a form and have such other provisions as
     Acquiror may reasonably specify) and (ii) instructions for use in effecting
     the surrender of the Certificates in exchange for the Merger Consideration.
     Upon surrender of a Certificate for cancellation to the Exchange Agent or
     to such other agent or agents as may be appointed by Acquiror, together
     with such letter of transmittal, duly executed, and such other documents as
     may reasonably be required by the Exchange Agent, the holder of such
     Certificate shall be entitled to receive in exchange therefor the Merger
     Consideration into which the shares of Common Shares theretofore
     represented by such Certificate shall have been converted pursuant to
     SECTION 2.1.2 and any dividends or other distributions to which such holder
     is entitled pursuant to SECTION 2.2.4, and the Certificate so surrendered
     shall forthwith be canceled. In the event of a transfer of ownership of
     Common Shares which is not registered in the transfer records of the
     Company, payment may be made to a Person other than the Person in whose
     name the Certificate so surrendered is registered if such Certificate shall
     be properly endorsed or otherwise be in proper form for transfer and the
     Person requesting such payment either shall pay any transfer or other taxes
     required by reason of such payment being made to a Person other than the
     registered holder of such Certificate or establish to the satisfaction of
     Acquiror that such tax or taxes have been paid or are not applicable. Until
     surrendered as contemplated by this SECTION 2.2, each Certificate shall be
     deemed at any time after the Effective Time to represent only the right to
     receive upon such surrender the Merger Consideration, without interest,
     into which the shares of Common Shares theretofore represented by such
     Certificate shall have been converted pursuant to SECTION 2.1.2, and any
     dividends or other distributions to which such holder is entitled pursuant
     to SECTION 2.2.4. No interest will be paid or will accrue on the Merger
     Consideration upon the surrender of any Certificate or on any cash payable
     pursuant to SECTION 2.2.4 or SECTION 2.2.7.
 
                                        3
<PAGE>   9
 
          2.2.4  RECORD DATES FOR FINAL DIVIDENDS; DISTRIBUTIONS WITH RESPECT TO
     UNEXCHANGED SHARES.
 
             (i) To the extent necessary to satisfy the requirements of SECTION
        857(A)(1) of the Code for the taxable year of the Company ending at the
        Effective Time, the Company shall declare a dividend (the "Final Company
        Dividend") to holders of Common Shares, the record date for which shall
        be close of business on the last business day prior to the Effective
        Time, in an amount equal to the minimum dividend sufficient to permit
        the Company to satisfy such requirements. If the Company determines it
        necessary to declare the Final Company Dividend, it shall notify
        Acquiror at least ten (10) days prior to the date for the Company
        Shareholders Meeting, and Acquiror shall declare a dividend per share to
        holders of Acquiror Common Stock, the record date for which shall be the
        close of business on the last business day prior to the Effective Time,
        in an amount per share equal to the quotient obtained by dividing (x)
        the Final Company Dividend per share of Common Shares paid by the
        Company by (y) the Exchange Ratio. The dividends payable hereunder to
        holders of Common Shares shall be paid upon presentation of the
        certificates of Common Shares for exchange in accordance with this
        ARTICLE II, and shall be payable solely from the separate funds of the
        Company, which shall be provided to the Exchange Agent on or before the
        Effective Time for this purpose.
 
             (ii) No dividends or other distributions with respect to Acquiror
        Common Stock with a record date after the Effective Time shall be paid
        to the holder of any unsurrendered Certificate with respect to the
        shares of Acquiror Common Stock represented thereby, and no cash payment
        in lieu of fractional shares shall be paid to any such holder pursuant
        to SECTION 2.2.7, in each case, until the surrender of such Certificate
        in accordance with this ARTICLE II. Subject to the effect of applicable
        escheat laws, following surrender of any such Certificate there shall be
        paid to the holder of such Certificate, without interest, (i) at the
        time of such surrender, the amount of any cash payable in lieu of any
        fractional share of Acquiror Common Stock to which such holder is
        entitled pursuant to SECTION 2.2.7 and (ii) if such Certificate is
        exchangeable for one or more whole shares of Acquiror Common Stock, (x)
        at the time of such surrender the amount of dividends or other
        distributions with a record date after the Effective Time theretofore
        paid with respect to such whole shares of Acquiror Common Stock and (y)
        at the appropriate payment date, the amount of dividends or other
        distributions with a record date after the Effective Time but prior to
        such surrender and with a payment date subsequent to such surrender
        payable with respect to such whole shares of Acquiror Common Stock.
 
          2.2.5  NO FURTHER OWNERSHIP RIGHTS IN COMMON SHARES.  All Merger
     Consideration paid upon the surrender of Certificates in accordance with
     the terms of this ARTICLE II (and any cash paid pursuant to SECTION 2.2.7)
     shall be deemed to have been paid in full satisfaction of all rights
     pertaining to the Common Shares theretofore represented by such
     Certificates; provided, however, that the Company shall transfer to the
     Exchange Agent cash sufficient to pay any dividends or make any other
     distributions with a record date prior to the Effective Time which may have
     been declared or made by the Company on such Common Shares in accordance
     with the terms of this Agreement or prior to the date of this Agreement and
     which remain unpaid at the Effective Time and have not been paid prior to
     such surrender, and there shall be no further registration of transfers on
     the stock transfer books of the Company of the Common Shares which were
     outstanding immediately prior to the Effective Time. If, after the
     Effective Time, Certificates are presented to the Surviving Company or
     Acquiror for any reason, they shall be canceled and exchanged as provided
     in this ARTICLE II.
 
          2.2.6  NO LIABILITY.  None of Acquiror, Merger Sub, the Company or the
     Exchange Agent shall be liable to any Person in respect of any Merger
     Consideration or dividends delivered to a public official pursuant to any
     applicable abandoned property, escheat or similar law. Any portion of the
     Exchange Fund delivered to the Exchange Agent pursuant to this Agreement
     that remains unclaimed for six months after the Effective Time shall be
     redelivered by the Exchange Agent to Acquiror, upon demand, and any holders
     of Certificates who have not theretofore complied with SECTION 2.2.3 shall
     thereafter look only to Acquiror for delivery of the Merger Consideration
     and any unpaid dividends, subject to applicable escheat and other similar
     laws.
 
                                        4
<PAGE>   10
 
          2.2.7  NO FRACTIONAL SHARES.  No certificates or scrip representing
     fractional shares of Acquiror Common Stock shall be issued upon the
     surrender for exchange of Certificates, and such fractional share interests
     will not entitle the owner thereof to vote, to receive dividends or to any
     other rights of a shareholder of Acquiror. Notwithstanding any other
     provision of this Agreement, each holder of shares of Common Shares
     exchanged pursuant to the Merger who would otherwise have been entitled to
     receive a fraction of a share of Acquiror Common Stock (after taking into
     account all Certificates delivered by such holder) shall receive, upon
     surrender of such holder's Certificates in accordance with SECTION 2.2.3, a
     cash payment in lieu of such fractional shares of Acquiror Common Stock
     equal to the fractional proportion of the arithmetic mean of the closing
     sales price of a share of Acquiror Common Stock on the NYSE over the ten
     (10) trading days immediately preceding the Closing Date.
 
          2.2.8  WITHHOLDING RIGHTS.  Acquiror or the Exchange Agent shall be
     entitled to deduct and withhold from the Merger Consideration otherwise
     payable pursuant to this Agreement to any holder of Common Shares such
     amounts as Acquiror or the Exchange Agent is required to deduct and
     withhold with respect to the making of such payment under the Code, or any
     provision of state, local or foreign tax law. To the extent that such
     amounts are so withheld by Acquiror or the Exchange Agent, such withheld
     amount shall be treated for all purposes of this Agreement as having been
     paid to the holder of the Common Shares in respect of which such deduction
     and withholding was made by Acquiror or the Exchange Agent.
 
                                  ARTICLE III
 
                         REPRESENTATIONS AND WARRANTIES
 
     SECTION 3.1  REPRESENTATIONS AND WARRANTIES OF THE COMPANY.  The Company
represents and warrants to Acquiror and Merger Sub as follows:
 
          3.1.1  ORGANIZATION, STANDING AND POWER OF THE COMPANY.  The Company
     is a real estate investment trust duly organized and validly existing under
     the laws of Texas and has the requisite power and authority to carry on its
     business as now being conducted. The Company is duly qualified or licensed
     to do business 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 the
     Company and the Company Subsidiaries, taken as a whole (a "Material Adverse
     Effect"). The Company has delivered to Acquiror complete and correct copies
     of its Amended and Restated Declaration of Trust, as amended (the
     "Company's Charter") and Amended and Restated Bylaws, as amended to the
     date of this Agreement (the "Company's Bylaws").
 
          3.1.2  COMPANY SUBSIDIARIES.  SCHEDULE 3.1.2 to the Company Disclosure
     Letter sets forth each Company Subsidiary and the ownership interest
     therein of the Company. Except as set forth on SCHEDULE 3.1.2 to the
     Company Disclosure Letter, (A) all the outstanding shares of capital stock
     of each Company Subsidiary that is a corporation have been validly issued
     and are fully paid and nonassessable, are owned by the Company or by
     another Company Subsidiary free and clear of all Liens, other restrictions
     and limitations on voting rights and (B) all equity interests in each
     Company Subsidiary that is a partnership, joint venture, limited liability
     company or trust are owned by the Company, by another Company Subsidiary,
     or by the Company and another Company Subsidiary, or by two or more Company
     Subsidiaries free and clear of all Liens, other restrictions and
     limitations on voting rights. Except for the capital stock of or other
     equity or ownership interests in the Company Subsidiaries, and except as
     set forth on SCHEDULE 3.1.2 to the Company Disclosure Letter, the Company
     does not own, directly or indirectly, any capital stock or other equity or
     ownership interest in any Person. Each Company 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 Company
     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
 
                                        5
<PAGE>   11
 
     and authority to carry on its business as now being conducted. Each Company
     Subsidiary is duly qualified or licensed to do business 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. Copies of the Articles of Incorporation,
     Bylaws, organization documents and partnership and joint venture agreements
     of each Company Subsidiary, as amended to the date of this Agreement, have
     been previously delivered to Acquiror.
 
          3.1.3  CAPITAL STRUCTURE.  The authorized capital stock of the Company
     consists of 100,000,000 shares of Common Shares and 10,000,000 shares of
     Preferred Shares, of which 500,000 shares have been classified as Series A
     Junior Participating Preferred Stock and the remaining 9,500,000 shares
     remain unclassified. On the date hereof, (i) 13,409,642 shares of Common
     Shares and no shares of Preferred Shares were issued and outstanding, (ii)
     900 shares of Common Shares were held by the Company in its treasury, (iii)
     260,000 shares of Common Shares were issuable under the Company's employee
     benefit or incentive plans pursuant to awards granted by the Company (the
     "Company Employee Stock Plans"), (iv) 1,940,000 shares of Common Shares
     were issuable upon exercise of outstanding options (the "Company Options")
     to purchase Common Shares, (v) 937,496 shares of Common Shares were
     reserved for issuance pursuant to the Company's Amended and Restated
     Dividend Reinvestment Share Purchase Plan and (vi) 83,898 shares of Common
     Shares were reserved for issuance pursuant to the Company's Employee Share
     Purchase Plan. On the date of this Agreement, except as set forth in this
     SECTION 3.1.3 or in SCHEDULE 3.1.3 to the Company Disclosure Letter, no
     shares of beneficial interest or other voting securities of the Company
     were issued, reserved for issuance or outstanding. The Company has no
     outstanding stock appreciation rights relating to the beneficial shares of
     interest of the Company. All outstanding beneficial shares of interest of
     the Company 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 the Company having the right to
     vote (or convertible into, or exchangeable for, securities having the right
     to vote) on any matters on which shareholders of the Company may vote.
     Except (A) as set forth above in this SECTION 3.1.3, (B) as set forth in
     SCHEDULE 3.1.3 to the Company Disclosure Letter or (C) as otherwise
     permitted under SECTION 4.1, 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 the Company
     or any Company Subsidiary is a party or by which such entity is bound,
     obligating the Company or any Company 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 the Company or any
     Company Subsidiary or obligating the Company or any Company Subsidiary to
     issue, grant, extend or enter into any such security, option, warrant,
     call, right, commitment, agreement, arrangement or undertaking (other than
     to the Company or a Company Subsidiary). Except as set forth on SCHEDULE
     3.1.3 to the Company Disclosure Letter, there are no outstanding
     contractual obligations of the Company or any Company Subsidiary to
     repurchase, redeem or otherwise acquire any beneficial shares of interest
     of the Company or any capital stock, voting securities or other ownership
     interests in any Company Subsidiary or make any investment (in the form of
     a loan, capital contribution or otherwise) in any Person (other than a
     Company Subsidiary).
 
          3.1.4  AUTHORITY; NONCONTRAVENTION; CONSENTS.  The Company has the
     requisite power and authority to enter into this Agreement and, subject to
     approval of this Agreement by the vote of the holders of the Common Shares
     required to approve this Agreement and the Transactions (the "Company
     Shareholder Approvals"), to consummate the Transactions to which the
     Company is a party. The execution and delivery of this Agreement by the
     Company and the consummation by the Company of the Transactions to which
     the Company is a party have been duly authorized by all necessary action on
     the part of the Company and no other action or proceedings on the part of
     the Company are necessary to authorize this Agreement or the consummation
     of the Transactions, subject to approval of this Agreement pursuant to the
     Company Shareholder Approvals. This Agreement has been duly executed and
     delivered by the Company and constitutes a valid and binding obligation of
     the Company, enforceable against the Company in accordance with its terms.
     Except as set forth in SCHEDULE 3.1.4 to the Company Disclosure Letter, the
     execution and delivery of this Agreement by the Company do not,
 
                                        6
<PAGE>   12
 
     and the consummation of the Transactions to which the Company is a party
     and compliance by the Company 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 obligation or to loss of a
     benefit or alteration of rights or obligations under, or result in the
     creation of any Lien upon any of the properties or assets of the Company or
     any Company Subsidiary under, (i) the Company's Charter and the Company's
     Bylaws, or the comparable charter or organizational documents or
     partnership or similar agreement (as the case may be) of any Company
     Subsidiary, (ii) any loan or credit agreement, note, bond, mortgage,
     indenture, reciprocal easement agreement, lease or other agreement,
     instrument, permit, concession, contract, franchise or license applicable
     to the Company or any Company Subsidiary or their respective properties or
     assets or (iii) subject to the governmental filings and other matters
     referred to in the following sentence, any Laws applicable to the Company
     or any Company Subsidiary, or their respective properties or assets, other
     than, in the case of clause (ii) or (iii), any such conflicts, violations,
     defaults, rights or Liens that either individually or in the aggregate
     would not (x) have a Material Adverse Effect or (y) materially delay or
     prevent the consummation of the Transactions. No consent, approval, order
     or authorization of, or registration, declaration or filing with, any
     Governmental Entity is required by or with respect to the Company or any
     Company Subsidiary in connection with the execution and delivery of this
     Agreement by the Company or the consummation by the Company of the
     Transactions, except for (i) the filing with the SEC of (x) a joint proxy
     statement relating to the Company Shareholder Approvals and the Acquiror
     Shareholder Approvals of the Transactions (as amended or supplemented from
     time to time, the "Proxy 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, (ii) the filing of the Articles of Merger
     with the Applicable Bodies, (iii) 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 (A) as are set forth in SCHEDULE 3.1.4 to the
     Company Disclosure Letter, (B) as may be required under (x) federal, state
     or local environmental laws or (y) the "blue sky" laws of various states or
     (C) which, if not obtained or made, would not prevent or delay in any
     material respect the consummation of any of the Transactions or otherwise
     prevent the Company from performing its obligations under this Agreement in
     any material respect or have, individually or in the aggregate, a Material
     Adverse Effect.
 
          3.1.5  SEC DOCUMENTS; FINANCIAL STATEMENTS; UNDISCLOSED
     LIABILITIES.  The Company has filed all reports, schedules, forms,
     statements and other documents required to be filed with the SEC (the
     "Company SEC Documents"). All of the Company SEC Documents (other than
     preliminary material or material which was subsequently amended), as of
     their respective filing dates, complied, or will comply, as the case may
     be, 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 Company SEC
     Documents. None of the Company SEC Documents at the time of filing and
     effectiveness contained, or will contain, as the case may be, any untrue
     statement of a material fact or omitted, or will omit, as the case may be,
     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 amended, modified or superseded by later Company SEC Documents.
     The consolidated financial statements of the Company included in the
     Company SEC Documents complied, or will comply, as the case may be, 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, or will be prepared, as the case may be, in accordance with
     GAAP (except, in the case of unaudited statements, as permitted by Form
     10-Q promulgated under the Exchange Act) applied on a consistent basis
     during the periods involved (except as may be indicated in the notes
     thereto) and fairly presented, or will present, as the case may be, in
     accordance with the applicable requirements of GAAP, the consolidated
     financial position of the Company 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 and
     recurring year-end audit adjustments which were not or are not expected to
     be material in amount). The audited financial statements of the
     unconsolidated
 
                                        7
<PAGE>   13
 
     Company Subsidiaries previously delivered to Acquiror (the "Unconsolidated
     Company Financial Statements") have been prepared in accordance with GAAP
     applied on a consistent basis during the periods involved (except as may be
     indicated in the notes thereto) and fairly presented, in accordance with
     the applicable requirements of GAAP, the financial position of such Company
     Subsidiaries, taken as a whole, as of the dates thereof, and the results of
     their respective operations and cash flows for the periods then ended.
     Except as set forth in the Company SEC Documents filed with the SEC prior
     to the date hereof, in the Unconsolidated Company Financial Statements, or
     in SCHEDULE 3.1.5 to the Company Disclosure Letter, and except for
     liabilities and obligations incurred since the Financial Statement Date in
     the ordinary course of business and consistent with past practice, neither
     the Company nor any Company 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 the Company or
     of any unconsolidated Company Subsidiary or in the notes thereto and which,
     individually or in the aggregate, would have a Material Adverse Effect.
 
          3.1.6  ABSENCE OF CERTAIN CHANGES OR EVENTS.  Except as disclosed in
     the Company SEC Documents filed with the SEC prior to the date hereof or in
     SCHEDULE 3.1.6 to the Company Disclosure Letter, since the date of the most
     recent financial statements included in the Company SEC Documents (the
     "Financial Statement Date") to the date of this Agreement, the Company and
     the Company Subsidiaries have conducted their business only in the ordinary
     course and there has not been (i) any change that would have a Material
     Adverse Effect (a "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 Material Adverse Change, (ii) except for (x)
     regular quarterly dividends not in excess of $.395 per share of Common
     Shares with customary record and payment dates and (y) the payment of a
     preferred share purchase right dividend pursuant to the Rights Agreement
     between the Company and BankBoston, N.A., dated May 23, 1997 (the "Rights
     Agreement"), any declaration, setting aside or payment of any dividend or
     other distribution (whether in cash, stock or property) with respect to any
     of the Company's beneficial interests, other than any dividend required to
     be paid pursuant to SECTION 2.2.4, (iii) any split, combination or
     reclassification of any of the Company's capital stock 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 capital stock or any issuance of an ownership
     interest in, any Company Subsidiary except as permitted by SECTION 4.1
     after the date hereof, (iv) any damage, destruction or loss, whether or not
     covered by insurance, that has or would have or is reasonably likely to
     have a Material Adverse Effect or (v) any change in accounting methods,
     principles or practices by the Company or any Company Subsidiary, except
     insofar as required by a change in GAAP.
 
          3.1.7  LITIGATION.  Except as disclosed in the Company SEC Documents
     filed with the SEC prior to the date hereof or in SCHEDULE 3.1.7 to the
     Company Disclosure Letter, there is no suit, action or proceeding pending,
     threatened in writing or to the Knowledge of the Company otherwise
     threatened against or affecting the Company or any Company Subsidiary or
     any of their respective properties or assets that, individually or in the
     aggregate, could reasonably be expected to (A) have a Material Adverse
     Effect or (B) prevent the consummation of any of the Transactions, nor is
     there any judgment, decree, injunction, rule or order of any Governmental
     Entity or arbitrator outstanding against the Company or any Company
     Subsidiary or any of their respective properties or assets having, or
     which, insofar as reasonably can be foreseen, in the future would have, any
     such effect.
 
        3.1.8  PROPERTIES.
 
             (i)  The Company or one of the Company Subsidiaries owns fee simple
        title (or where indicated, leasehold estate) to each of the real
        properties identified in SCHEDULE 3.1.8 to the Company Disclosure Letter
        (the "Company Properties"), except as listed on SCHEDULE 3.1.8 to the
        Company Disclosure Letter, which are all of the real estate properties
        owned by them, in each case (except as provided below) free and clear of
        Liens, mortgages or deeds of trust, claims against title, charges which
        are liens, security interests or other encumbrances on title
        ("Encumbrances"). The Company Properties are not subject to any rights
        of way, written agreements, laws, ordinances and regulations affecting
        building use or occupancy (collectively, "Property Restrictions"),
        except for
 
                                        8
<PAGE>   14
 
        (A) Encumbrances and Property Restrictions set forth in SCHEDULE 3.1.8
        to the Company Disclosure Letter, (B) Property Restrictions imposed or
        promulgated by law or any governmental body or authority with respect to
        real property, including zoning regulations, provided that they do not
        materially adversely affect the currently intended use of any Company
        Property, (C) 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
        Acquiror and listed in the Company Disclosure Letter), and (D)
        mechanics', carriers', workmens', repairmens' and materialmens' liens
        and other Encumbrances, Property Restrictions and other limitations of
        any kind, if any, which, individually or in the aggregate, are not
        substantial in amount, do not materially detract from the value of or
        materially interfere with the present use of any of the Company
        Properties subject thereto or affected thereby, and do not otherwise
        have a Material Adverse Effect. Except as provided in SCHEDULE 3.1.8 to
        the Company Disclosure Letter, valid policies of title insurance have
        been issued insuring the Company's or the applicable Company
        Subsidiaries' fee simple title or leasehold estate to the Company
        Properties in amounts at least equal to the value of such Company
        Properties at the time of the issuance of such policy, subject only to
        the matters disclosed above and on the Company Disclosure Letter, and
        such policies are, at the date hereof, in full force and effect and no
        material claim has been made against any such policy. Except as provided
        in SCHEDULE 3.1.8 to the Company Disclosure Letter, (A) the Company has
        no Knowledge that any material certificate, permit or license, from any
        Governmental Entity having jurisdiction over any of the Company
        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 Company Properties or which is necessary to permit the
        lawful access to and from any of the Company Properties has not been
        obtained and is not in full force and effect, or of any pending threat
        of modification or cancellation of any such certificate, permit or
        license and (B) none of the Company or the Company Subsidiaries has
        received written notice of any violation of any federal, state or
        municipal law, ordinance, order, regulation or requirement materially
        affecting any portion of any of the Company Properties issued by any
        Governmental Entity. Except as provided in SCHEDULE 3.1.8 to the Company
        Disclosure Letter, neither the Company nor any of the Company
        Subsidiaries has received any notice to the effect that (A) any
        condemnation or rezoning proceedings are pending or threatened with
        respect to any of the Company Properties or (B) any zoning, building or
        similar law, code, ordinance, order or regulation is or will be violated
        by the continued maintenance, operation or use of any buildings or other
        improvements on any of the Company Properties or by the continued
        maintenance, operation or use of the parking areas. Except as provided
        in SCHEDULE 3.1.8 to the Company Disclosure Letter, all work to be
        performed, payments to be made and actions to be taken by the Company or
        the Company Subsidiaries prior to the date hereof pursuant to any
        agreement entered into with a Governmental Entity in connection with a
        site approval, zoning reclassification or other similar action relating
        to the Company Properties (e.g. local improvement district, road
        improvement district, environmental mitigation) has been performed, paid
        or taken, as the case may be, and the Company has no Knowledge of any
        planned or proposed work, payments or actions that may be required after
        the date hereof pursuant to such agreements.
 
             (ii) All properties currently under development or construction by
        the Company or the Company Subsidiaries (the "Development Properties")
        and all properties currently proposed for acquisition, development or
        commencement of construction prior to the Effective Time by the Company
        and the Company Subsidiaries (the "Future Development Properties") are
        listed as such on SCHEDULE 3.1.8 to the Company Disclosure Letter. All
        executory agreements entered into by the Company or any Company
        Subsidiary relating to the development or construction of multifamily
        residential or other real estate properties (other than agreements for
        architectural, engineering, planning, accounting, legal or other
        professional services, or construction agreements for material or labor)
        are listed on SCHEDULE 3.1.8 to the Company Disclosure Letter. Copies of
        such agreements, all of which have previously been delivered or made
        available to Acquiror are listed on the Company Disclosure Letter and
        are true and correct.
 
                                        9
<PAGE>   15
 
          3.1.9  ENVIRONMENTAL MATTERS.  Except as set forth in SCHEDULE 3.1.9
     to the Company Disclosure Letter or except as to matters previously
     remediated in accordance with applicable Law, none of the Company, or any
     Company Subsidiaries or, to the Company's Knowledge, any other Person has
     caused or permitted (a) the presence of any Hazardous Materials at, in, on,
     or under any of the Company Properties in any amount, form, or location
     that would be unlawful, require investigation, notification of Government
     Entities, or remedial action, or otherwise result in potential material
     liabilities under any applicable local, state, or federal environmental
     Laws, or (b) any spills, releases, discharges or disposal of Hazardous
     Materials to have occurred or be presently occurring on or from the Company
     Properties or at any other location as a result of any construction on or
     operation and use of such properties, which presence or occurrence would,
     individually or in the aggregate, have or is reasonably likely to have a
     Material Adverse Effect; and in connection with the construction on or
     operation and use of the Company Properties, the Company and the Company
     Subsidiaries have not failed to comply in any material respect with all
     applicable local, state and federal environmental Laws, regulations,
     ordinances and administrative and judicial orders relating to the
     generation, use, recycling, reuse, sale, storage, handling, transport and
     disposal of any Hazardous Materials.
 
          3.1.10  RELATED PARTY TRANSACTIONS.  Set forth in SCHEDULE 3.1.10 to
     the Company Disclosure Letter or in the Company's definitive proxy
     statements for the Annual Meeting of Shareholders held May 23, 1997, May
     20, 1996, and May 18, 1995, is a list of all arrangements, agreements and
     contracts entered into by the Company or any of the Company Subsidiaries
     with any Person who (i) is an executive officer, director or Affiliate of
     the Company or any of the Company Subsidiaries, or any entity of which any
     of the foregoing is an Affiliate which would be required to be disclosed
     under Item 404 of Regulation S-K or (ii) acquired Common Shares in a
     private placement. Such documents, copies of all of which have been
     previously delivered or made available to Acquiror, are listed in SCHEDULE
     3.1.10 to the Company Disclosure Letter or in the Company's definitive
     proxy statements for the Annual Meeting of Shareholders held May 23, 1997,
     May 20, 1996, and May 18, 1995.
 
          3.1.11  ABSENCE OF CHANGES IN BENEFIT PLANS; ERISA COMPLIANCE.
 
             (i) Except as disclosed in the Company SEC Documents filed with the
        SEC prior to the date hereof or in SCHEDULE 3.1.11(I) to the Company
        Disclosure Letter, since the date of the most recent audited financial
        statements included in the Company SEC Documents filed with the SEC
        prior to the date hereof, there has not been any adoption or amendment
        by the Company, any Company Subsidiary or any Person affiliated with the
        Company under Section 414(b), (c), (m) or (o) of the Code (each, an
        "ERISA Affiliate of the Company") of any bonus, pension, profit sharing,
        deferred compensation, incentive compensation, stock ownership, stock
        purchase, stock option, phantom stock, retirement, vacation, severance,
        disability, death benefit, hospitalization, medical or other employee
        benefit plan, arrangement or understanding (whether or not legally
        binding, or oral or in writing) providing benefits to any current or
        former employee, officer or director of the Company, any Company
        Subsidiary, or any ERISA Affiliate of the Company (collectively,
        "Company Benefit Plans"). No Company Benefit Plan is, or has been
        subject to Title IV of ERISA or to Section 412 of the Code or Section
        302 of ERISA or provides post-retirement health benefits other than the
        health benefits required under Section 4980B of the Code or Part 6 of
        Title I of ERISA.
 
             Each Company Benefit Plan is listed in SCHEDULE 3.1.11(I) to the
        Company Disclosure Letter, including, with respect to terminated Company
        Benefit Plans, the date of termination. True and correct copies of each
        of the following have been made available to Acquiror: (i) the most
        recent annual report (Form 5500), if any, relating to each such Company
        Benefit Plan filed with the IRS, (ii) each such Company Benefit Plan,
        (iii) the trust agreement, if any, relating to each such Company Benefit
        Plan, (iv) the most recent summary plan description for each such
        Company Benefit Plan for which a summary plan description is required by
        ERISA, and (v) the most recent determination letter, if any, issued by
        the IRS with respect to any such Company Benefit Plan qualified under
        Section 401 of the Code.
 
                                       10
<PAGE>   16
 
             Except as set forth in SCHEDULE 3.1.11(I) to the Company Disclosure
        Letter, as to any such Company Benefit Plan intended to be qualified
        under Section 401 of the Code, such Company Benefit Plan satisfies in
        form the requirements of such Section and there has been no termination
        or partial termination of such Company Benefit Plan within the meaning
        of Section 411(d)(3) of the Code.
 
             As to any such terminated Company Benefit Plan intended to have
        been qualified under Section 401 of the Code, such terminated Company
        Benefit Plan received a favorable determination letter from the IRS with
        respect to its termination.
 
             Except as set forth in SCHEDULE 3.1.11(I) to the Company Disclosure
        Letter either the Company, a Company Subsidiary or an ERISA Affiliate of
        the Company has the right, either individually or in the aggregate,
        unilaterally to terminate any, and each, of the Company Benefit Plans
        without incurring any additional expense to fund or pay any benefits
        upon such termination.
 
             There are no actions, suits or claims pending (other than routine
        claims for benefits) or, to the Knowledge of the Company, threatened
        against, or with respect to, any of such Company Benefit Plans or their
        assets that could reasonably be expected to have a Material Adverse
        Effect.
 
             To the Knowledge of the Company, there is no matter pending before
        the IRS, the United States Department of Labor or the PBGC with respect
        to any of such Company Benefit Plans.
 
             All contributions required to be made to such Company Benefit Plans
        pursuant to their terms and provisions have been timely made.
 
             Except as set forth in SCHEDULE 3.1.11(I) to the Company Disclosure
        Letter, neither the Company nor any Company Subsidiary is a party to or
        is bound by any severance agreement, program or policy. True and correct
        copies of all employment agreements with officers of the Company and the
        Company Subsidiaries, and all vacation, overtime and other compensation
        policies of the Company and the Company Subsidiaries relating to their
        employees have been made available to Acquiror.
 
             (ii) Except as described in the Company SEC Documents or in
        SCHEDULE 3.1.11(II) to the Company Disclosure Letter or as would not
        have a Material Adverse Effect, (A) all Company Benefit Plans, including
        any such plan that is an "employee benefit plan" as defined in Section
        3(3) of ERISA, are in compliance with all applicable requirements of
        law, including ERISA and the Code, and (B) other than claims for
        benefits and contributions in the normal course of business, neither the
        Company, any Company Subsidiary nor any ERISA Affiliate of the Company
        has any liabilities or obligations with respect to any such Company
        Benefit Plan, whether accrued, contingent or otherwise, nor to the
        Knowledge of the Company are any such liabilities or obligations
        expected to be incurred. Except as set forth in SCHEDULE 3.1.11(II) to
        the Company Disclosure Letter, or as permitted by SECTION 5.13.2 the
        execution of, and performance of the Transactions will not (either alone
        or upon the occurrence of any additional or subsequent events)
        constitute an event under any Company Benefit Plan, policy, arrangement
        or agreement or any trust or loan that will or may result in any payment
        (whether of severance pay or otherwise), acceleration, forgiveness of
        indebtedness, vesting, distribution, increase in benefits or obligation
        to fund benefits with respect to any employee or director of the
        Company, any Company Subsidiary, or any ERISA Affiliate of the Company.
 
             (iii) Except as set forth in SCHEDULE 3.1.11(III) to the Company
        Disclosure Letter, neither the Company nor any Company Subsidiary has
        any plans, programs or agreements to which they are parties, or to which
        they are subject, pursuant to which payments (or acceleration of
        benefits) may be required upon, or may become payable directly or
        indirectly as a result of, a change of control of the Company.
 
             (iv) No agreements have been made with any Person by, or on behalf
        of, the Company or any Company Subsidiary with respect to any
        interpretation of, or the amount or calculation of any benefits payable
        under, any plans, programs or agreements described in SECTION
        3.1.11(III) or in
 
                                       11
<PAGE>   17
 
        SCHEDULE 3.1.11(III) to the Company Disclosure Letter, which agreement
        is binding on the Company or any Company Subsidiary or would be binding
        on Acquiror.
 
        3.1.12  TAXES.
 
             (i) Except as set forth in SCHEDULE 3.1.12 to the Company
        Disclosure Letter, each of the Company and each Company Subsidiary has
        (A) 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 all such returns and reports are
        accurate and complete in all material respects; and (B) paid (or the
        Company has paid on its behalf) all Taxes shown on such returns and
        reports as required to be paid by it, and the most recent financial
        statements contained in the Company SEC Documents reflect an adequate
        reserve for all material Taxes payable by the Company (and by those
        Company Subsidiaries whose financial statements are contained therein)
        for all taxable periods and portions thereof through the date of such
        financial statements. True, correct and complete copies of all federal,
        state and local Tax returns and reports for the Company and each Company
        Subsidiary, and all written communications relating thereto, have been
        delivered or made available to representatives of Acquiror. Except as
        set forth on SCHEDULE 3.1.12 to the Company Disclosure Letter, to the
        Knowledge of the Company, no deficiencies for any Taxes have been
        proposed, asserted or assessed against the Company or any of the Company
        Subsidiaries, and no requests for waivers of the time to assess any such
        Taxes are pending.
 
             (ii) The Company (A) for all taxable years commencing with the
        taxable year ended December 31, 1993 through the most recent December
        31, has been organized in conformity with the requirements for
        qualification as a real estate investment trust (a "REIT") (within the
        meaning of the Code) under the Code and has been subject to taxation as
        a REIT and has satisfied all requirements to qualify as a REIT for such
        years, (B) has operated, and intends to continue to operate, in such a
        manner as to qualify as a REIT for the taxable year ending on the
        Closing Date, and (C) has not taken or omitted to take any action which
        would reasonably be expected to result in a challenge to its status as a
        REIT, and to the Company's Knowledge, no such challenge is pending or
        threatened. Each Company Subsidiary which is a partnership, joint
        venture or limited liability company has been treated during and since
        its formation and continues to be treated for federal income tax
        purposes as a partnership and not as a corporation or an association
        taxable as a corporation. Each Company Subsidiary which is a corporation
        for federal income tax purposes and with respect to which all of the
        outstanding capital stock is owned solely by the Company (or solely by a
        Company Subsidiary that is a corporation wholly owned by the Company) is
        a "qualified REIT subsidiary," as defined in Section 856(i) of the Code.
        Except as provided in SCHEDULE 3.1.12 to the Company Disclosure Letter,
        neither the Company nor any Company Subsidiary holds any asset (x) the
        disposition of which would be subject to rules similar to Section 1374
        of the Code as a result of an election under IRS Notice 88-19 or (y)
        that is subject to a consent filed pursuant to Section 341(f) of the
        Code and the regulations thereunder.
 
          3.1.13  NO PAYMENTS TO EMPLOYEES, OFFICERS OR TRUST MANAGERS.  Except
     as set forth on SCHEDULE 3.1.13 to the Company Disclosure Letter, there is
     no employment or severance contract, or other agreement requiring payments
     to be made or increasing any amounts payable thereunder on a change of
     control or otherwise as a result of the consummation of any of the
     Transactions, with respect to any employee, officer, trust manager or
     director of the Company or any Company Subsidiary.
 
          3.1.14  BROKERS; SCHEDULE OF FEES AND EXPENSES.  No broker, investment
     banker, financial advisor or other Person, other than Prudential Securities
     Incorporated ("Prudential"), the fees and expenses of which have previously
     been disclosed to Acquiror and will be paid by the Company, is entitled to
     any broker's, finder's, financial advisor's or other similar fee or
     commission in connection with the Transactions based upon arrangements made
     by or on behalf of the Company or any Company Subsidiary. The Company has
     provided to Acquiror a good faith estimate and description of the expenses
     of the Company and the Company Subsidiaries which the Company and the
     Company Subsidiaries expect to incur, or have incurred, in connection with
     the Transactions.
 
                                       12
<PAGE>   18
 
          3.1.15  COMPLIANCE WITH LAWS.  Except as disclosed in the Company SEC
     Documents filed with the SEC prior to the date hereof or as set forth in
     SCHEDULE 3.1.15 to the Company Disclosure Letter, neither the Company nor
     any Company Subsidiary 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 for violations and failures to comply that would not, individually
     or in the aggregate, reasonably be expected to result in a Material Adverse
     Effect.
 
          3.1.16  CONTRACTS; DEBT INSTRUMENTS.
 
             (i) To the Knowledge of the Company, neither the Company nor any
        Company Subsidiary is in violation of or in default under (nor 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
        loan or credit agreement, note, bond, mortgage, indenture, lease,
        permit, concession, franchise, license or any other material contract,
        agreement, arrangement or understanding, to which it is a party or by
        which it or any of its properties or assets is bound, except as set
        forth in SCHEDULE 3.1.16(I) to the Company Disclosure Letter and except
        for violations or defaults that would not, individually or in the
        aggregate, result in a Material Adverse Effect.
 
             (ii) Except for any of the following expressly identified in the
        Company SEC Documents filed with the SEC prior to the date hereof and
        except as permitted by SECTION 4.1 after the date hereof, SCHEDULE
        3.1.16(II) to the Company Disclosure Letter sets forth (x) a list of all
        loan or credit agreements, notes, bonds, mortgages, indentures and other
        agreements and instruments pursuant to which any indebtedness of the
        Company or any of the Company Subsidiaries, other than indebtedness
        payable to the Company or a Company Subsidiary or to any third-party
        partner or joint venturer in any Company Subsidiary, in an aggregate
        principal amount in excess of $100,000 per item is outstanding or may be
        incurred and (y) the respective principal amounts outstanding thereunder
        on June 30, 1997, For purposes of this SECTION 3.1.16(II),
        "Indebtedness" shall mean, with respect to any Person, without
        duplication, (A) all indebtedness of such Person for borrowed money,
        whether secured or unsecured, (B) all obligations of such Person under
        conditional sale or other title retention agreements relating to
        property purchased by such Person, (C) all capitalized lease obligations
        of such Person, (D) all obligations of such Person under interest rate
        or currency hedging transactions (valued at the termination value
        thereof) and (E) all guarantees of such Person of any such indebtedness
        of any other Person.
 
          3.1.17  STATE TAKEOVER STATUTES.  The Company has taken all action
     necessary, if any, to exempt transactions between Acquiror and the Company
     and its Affiliates from the operation of any "fair price," "moratorium,"
     "control share acquisition" or any other anti-takeover statute or similar
     statute enacted under any state laws or the federal laws of the United
     States, or any similar statute or regulation (a "Takeover Statute").
 
          3.1.18  REGISTRATION STATEMENT; PROXY STATEMENT.  The information
     supplied by the Company for inclusion or incorporation by reference in the
     Registration Statement shall not at the time the Registration Statement
     (including any amendments and supplements thereto) is declared effective by
     the SEC contain any untrue statement of a material fact or omit to state
     any material fact required to be stated therein or necessary in order to
     make the statements therein not misleading. The information supplied by the
     Company for inclusion or incorporation by reference in the Proxy Statement
     will not, on the date the Proxy Statement is first mailed to the
     shareholders, at the time of the Shareholders Meetings, or at the Effective
     Time, contain any untrue statement of any material fact, or omit to state
     any material fact necessary in order to make the statements made therein,
     in light of the circumstances under which they were made, not false or
     misleading. If at any time prior to the Effective Time any event relating
     to the Company or any of its respective Affiliates, officers or Trust
     Managers should be discovered by the Company which should be set forth in
     an amendment to the Registration Statement or a supplement to the Proxy
     Statement, the Company shall promptly inform Acquiror. Notwithstanding the
     foregoing, the Company makes no representation or warranty with respect to
     any information supplied
 
                                       13
<PAGE>   19
 
     by Acquiror or Merger Sub which is contained or incorporated by reference
     in any of the foregoing documents.
 
          3.1.19  HART-SCOTT-RODINO ANTITRUST IMPROVEMENTS ACT OF 1976.  For
     purposes of determining compliance with the HSR, the Company confirms that
     the conduct of its business consists solely of investing in, owning and
     operating real estate for the benefit of its shareholders.
 
          3.1.20  VOTE REQUIRED.  The affirmative vote of at least two-thirds of
     the outstanding shares of Common Shares is the only vote of the holders of
     any class or series of the Company's shares of beneficial interest
     necessary (under applicable law or otherwise) to approve this Agreement and
     the Transactions.
 
          3.1.21  OPINION OF FINANCIAL ADVISOR.  The Board of Trust Managers of
     the Company has received the opinion of Prudential, satisfactory to the
     Company, a copy of which has been provided to Acquiror, to the effect that,
     as of the date of such opinion, consideration to be received in the Merger
     is fair to the shareholders of the Company from a financial point of view.
 
          3.1.22  INVESTMENT COMPANY ACT OF 1940.  Neither the Company nor any
     Company Subsidiary is, or at the Effective Time will be, required to be
     registered under the 1940 Act.
 
          3.1.23  INSURANCE.  The Company maintains fire and casualty, general
     liability, business interruption, product liability, professional liability
     and sprinkler and water damage insurance policies with reputable insurance
     carriers, which the Company reasonably believes provide full and adequate
     coverage for all normal risks incident to the business of the Company and
     the Company Subsidiaries and their respective properties and assets.
 
          3.1.24  THE COMPANY'S RIGHTS AGREEMENT.  Neither the execution or
     delivery of this Agreement nor the consummation of the Transactions will
     cause Acquiror or any of its Affiliates to be within the definition of
     "Acquiring Person" as defined in the Rights Agreement. Neither the
     "Distribution Date" (as defined in the Rights Agreement) nor a "Shares
     Acquisition Date" (as defined in the Rights Agreement) has occurred under
     the Rights Agreement, and, to the Knowledge of the Company, neither
     Acquiror nor Merger Sub nor any Affiliate or Associate of Acquiror or
     Merger Sub has taken any action which would cause such Person to be deemed
     an Acquiring Person or which would cause a Distribution Date or a Shares
     Acquisition Date to occur under the Rights Agreement.
 
     SECTION 3.2  REPRESENTATIONS AND WARRANTIES OF ACQUIROR.  Acquiror
represents and warrants to the Company as follows:
 
          3.2.1  ORGANIZATION, STANDING AND CORPORATE POWER OF ACQUIROR AND
     MERGER SUB.  Each of Acquiror and Merger Sub is a Georgia corporation and
     each is duly organized and validly existing under the laws of Georgia and
     has the requisite power and authority to carry on its business as now being
     conducted. Each of Acquiror and Merger Sub is duly qualified or licensed to
     do business 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
     Acquiror and the Acquiror Subsidiaries, taken as a whole (an "Acquiror
     Material Adverse Effect"). Each of Acquiror and Merger Sub has delivered to
     the Company complete and correct copies of its Articles of Incorporation
     and Bylaws, as amended or supplemented to the date of this Agreement.
 
          3.2.2  ACQUIROR SUBSIDIARIES.  SCHEDULE 3.2.2 to the Acquiror
     Disclosure Letter sets forth each Acquiror Subsidiary and the ownership
     interest therein of Acquiror. Except as set forth in SCHEDULE 3.2.2 to the
     Acquiror Disclosure Letter, (A) all the outstanding shares of capital stock
     of each Acquiror Subsidiary that is a corporation have been validly issued
     and are fully paid and nonassessable and are owned by Acquiror, by another
     Acquiror Subsidiary or by Acquiror and another Acquiror Subsidiary, free
     and clear of all Liens, other restrictions and limitations on voting rights
     and (B) all equity interests in each Acquiror Subsidiary that is a
     partnership, joint venture, limited liability company or trust are owned by
     Acquiror, by another Acquiror Subsidiary or by Acquiror and another
     Acquiror Subsidiary free and
 
                                       14
<PAGE>   20
 
     clear of all Liens, other restrictions and limitations on voting rights.
     Except for the capital stock of or other equity or ownership interests in
     the Acquiror Subsidiaries, and except as set forth in SCHEDULE 3.2.2 to the
     Acquiror Disclosure Letter, Acquiror does not own, directly or indirectly,
     any capital stock or other equity or ownership interest in any Person. Each
     Acquiror Subsidiary (other than Merger Sub) 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 Acquiror 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 Acquiror Subsidiary is duly qualified or licensed to do
     business 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 an Acquiror Material Adverse Effect. Copies of
     the Articles of Incorporation, Bylaws, organization documents and
     partnership and joint venture agreements of each Acquiror Subsidiary, as
     amended to the date of this Agreement, have been previously delivered to
     the Company.
 
          3.2.3  CAPITAL STRUCTURE.  The authorized capital stock of Acquiror
     consists of 100,000,000 shares of Acquiror Common Stock and 20,000,000
     shares of Acquiror Preferred Stock, of which 1,000,000 shares have been
     classified as 8 1/2% Series A Cumulative Redeemable Preferred Stock and the
     remaining 19,000,000 shares remain unclassified. On the date hereof, (i)
     22,124,410 shares of Acquiror Common Stock and 1,000,000 shares of Acquiror
     Preferred Stock were issued and outstanding, (ii) no shares of Acquiror
     Stock or Acquiror Preferred Stock were held by Acquiror in its treasury,
     (iii) 98,248 shares of Acquiror Common Stock were reserved for issuance
     pursuant to options and shares of restricted stock not yet granted under
     Acquiror's employee benefit or incentive plans ("Acquiror Employee Stock
     Plans"), (iv) 1,030,440 shares of Acquiror Common Stock were issuable upon
     exercise of outstanding options under the Acquiror Employee Stock Plans
     (the "Acquiror Options") to purchase shares of Acquiror Common Stock; (v)
     145,972 shares were reserved for issuance pursuant to Acquiror's Dividend
     Reinvestment and Stock Purchase Plan, (vi) 26,308 shares were reserved for
     issuance pursuant to Acquiror's Employee Stock Purchase Plan and (vii)
     27,260,770 shares were reserved for issuance upon the exchange of
     outstanding limited partnership interests ("Units") in the Operating
     Partnership. On the date of this Agreement, except as set forth in this
     SECTION 3.2.3, no shares of capital stock or other voting securities of
     Acquiror were issued, reserved for issuance or outstanding. There are no
     outstanding stock appreciation rights relating to the capital stock of
     Acquiror. All outstanding shares of capital stock of Acquiror are, and all
     shares which may be issued pursuant to this Agreement will be, when issued,
     duly authorized, validly issued, fully paid and nonassessable and not
     subject to preemptive rights. Except as set forth on SCHEDULE 3.2.3 to the
     Acquiror Disclosure Letter, there are no bonds, debentures, notes or other
     indebtedness of Acquiror having the right to vote (or convertible into, or
     exchangeable for, securities having the right to vote) on any matters on
     which shareholders of Acquiror may vote. Except (A) as set above in this
     SECTION 3.2.3, (B) as set forth in SCHEDULE 3.2.3 to the Acquiror
     Disclosure Letter or (C) as otherwise permitted under SECTION 4.2, 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 Acquiror or any Acquiror Subsidiary is a
     party or by which such entity is bound, obligating Acquiror or any Acquiror
     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 Acquiror or of any Acquiror Subsidiary or obligating
     Acquiror or any Acquiror Subsidiary to issue, grant, extend or enter into
     any such security, option, warrant, call, right, commitment, agreement,
     arrangement or undertaking (other than to Acquiror or an Acquiror
     Subsidiary). Except as set forth on SCHEDULE 3.2.3 to the Acquiror
     Disclosure Letter, there are no outstanding contractual obligations of
     Acquiror or any Acquiror Subsidiary to repurchase, redeem or otherwise
     acquire any shares of capital stock or other ownership interests in any
     Acquiror Subsidiary or make any investment (in the form of a loan, capital
     contribution or otherwise) in any Person (other than an Acquiror
     Subsidiary).
 
          3.2.4  AUTHORITY; NONCONTRAVENTION; CONSENTS.  Each of Acquiror and
     Merger Sub has the requisite corporate power and authority to enter into
     this Agreement and, subject to approval of this
 
                                       15
<PAGE>   21
 
     Agreement by the vote of the holders of the Acquiror Common Stock required
     to approve this Agreement and the Transactions (including, without
     limitation, the issuance of Acquiror Common Stock in connection with the
     Merger) (the "Acquiror Shareholder Approvals" and, together with the
     Company Shareholder Approvals, the "Shareholder Approvals"), to consummate
     the Transactions to which Acquiror or Merger Sub (as the case may be) is a
     party. The execution and delivery of this Agreement by each of Acquiror and
     Merger Sub and the consummation by each of Acquiror and Merger Sub of the
     Transactions to which Acquiror or Merger Sub (as the case may be) is a
     party have been duly authorized by all necessary corporate action on the
     part of each of Acquiror and Merger Sub and no other action or proceedings
     on the part of Acquiror or Merger Sub are necessary to authorize this
     Agreement or the consummation of the Transactions, subject to approval of
     this Agreement and the issuance of Acquiror Common Stock in connection with
     the Merger pursuant to the Acquiror Shareholder Approvals. This Agreement
     has been duly executed and delivered by each of Acquiror and Merger Sub and
     constitutes a valid and binding obligation of each of Acquiror and Merger
     Sub, enforceable against each of Acquiror and Merger Sub in accordance with
     its terms. Except as set forth in SCHEDULE 3.2.4 to the Acquiror Disclosure
     Letter, the execution and delivery of this Agreement by each of Acquiror
     and Merger Sub do not, and the consummation of the Transactions to which
     Acquiror or Merger Sub (as the case may be) is a party and compliance by
     each of Acquiror and Merger Sub 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 obligation or to loss of a
     benefit or alteration of rights or obligations under, or result in the
     creation of any Lien upon any of the properties or assets of Acquiror,
     Merger Sub, or any other Acquiror Subsidiary under, (i) the Articles of
     Incorporation or Bylaws of Acquiror and Merger Sub or the comparable
     charter or organizational documents or partnership or similar agreement (as
     the case may be) of any other Acquiror 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 applicable to Acquiror, Merger Sub or any other Acquiror Subsidiary
     or their respective properties or assets or (iii) subject to the
     governmental filings and other matters referred to in the following
     sentence, any Laws applicable to Acquiror, Merger Sub or any other Acquiror
     Subsidiary or their respective properties or assets, other than, in the
     case of clause (ii) or (iii), any such conflicts, violations, defaults,
     rights or Liens that either individually or in the aggregate would not (x)
     have an Acquiror Material Adverse Effect or (y) materially delay or prevent
     the consummation of the Transactions. No consent, approval, order or
     authorization of, or registration, declaration or filing with, any
     Governmental Entity is required by or with respect to Acquiror, Merger Sub
     or any Acquiror Subsidiary in connection with the execution and delivery of
     this Agreement or the consummation by Acquiror or Merger Sub, as the case
     may be, of any of the Transactions, except for (i) the filing with the SEC
     of (x) the Proxy Statement and a registration statement on Form S-4 (or
     other appropriate form) in connection with the registration of the Acquiror
     Common Stock constituting the Merger Consideration (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,
     (ii) the filing of the Listing Application with the NYSE with respect to
     the shares of Acquiror Common Stock to be issued as part of the Merger
     consideration, (iii) the filing of the Articles of Merger with the
     Applicable Bodies, (iv) such filings as may be required in connection with
     the payment of any Transfer and Gains Taxes and (v) such other consents,
     approvals, orders, authorizations, registrations, declarations and filings
     (A) as are set forth in SCHEDULE 3.2.4 to the Acquiror Disclosure Letter,
     (B) as may be required under (x) federal, state or local environmental laws
     or (y) the "blue sky" laws of various states or (C) which, if not obtained
     or made, would not prevent or delay in any material respect the
     consummation of any of the Transactions or otherwise prevent Acquiror or
     Merger Sub from performing their respective obligations under this
     Agreement in any material respect or have, individually or in the
     aggregate, an Acquiror Material Adverse Effect.
 
          3.2.5  SEC DOCUMENTS; FINANCIAL STATEMENTS; UNDISCLOSED
     LIABILITIES.  Acquiror has filed all reports, schedules, forms, statements
     and other documents required to be filed with the SEC (the "Acquiror SEC
     Documents"). All of the Acquiror SEC Documents (other than preliminary
     material or
 
                                       16
<PAGE>   22
 
     material which was subsequently amended), as of their respective filing
     dates, complied, or will comply, as the case may be, 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 Acquiror SEC Documents. None of the Acquiror
     SEC Documents at the time of filing and effectiveness contained, or will
     contain, as the case may be, any untrue statement of a material fact or
     omitted, or will omit, as the case may be, 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 amended,
     modified or superseded by later Acquiror SEC Documents. The consolidated
     financial statements of Acquiror included in the Acquiror SEC Documents
     complied, or will comply, as the case may be, 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, or
     will be prepared, as the case may be, in accordance with GAAP (except, in
     the case of unaudited statements, as permitted by Form 10-Q promulgated
     under the Exchange Act) applied on a consistent basis during the periods
     involved (except as may be indicated in the notes thereto) and fairly
     presented, or will present, as the case may be, in accordance with the
     applicable requirements of GAAP, the consolidated financial position of
     Acquiror and the Acquiror 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
     and recurring year-end audit adjustments which were not or are not expected
     to be material in amount). Except as set forth in the Acquiror SEC
     Documents filed with the SEC prior to the date hereof, or in SCHEDULE 3.2.5
     to the Acquiror Disclosure Letter, and except for liabilities and
     obligations incurred since the Acquiror Financial Statement Date in the
     ordinary course of business and consistent with past practice, neither
     Acquiror nor any Acquiror 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 Acquiror or of any
     unconsolidated Acquiror Subsidiary or in the notes thereto and which,
     individually or in the aggregate, would have an Acquiror Material Adverse
     Effect.
 
          3.2.6  ABSENCE OF CERTAIN CHANGES OR EVENTS.  Except as disclosed in
     the Acquiror SEC Documents filed with the SEC prior to the date hereof or
     in SCHEDULE 3.2.6 to the Acquiror Disclosure Letter, since the date of the
     most recent financial statements included in the Acquiror SEC Documents
     (the "Acquiror Financial Statement Date") to the date of this Agreement,
     Acquiror and the Acquiror Subsidiaries have conducted their business only
     in the ordinary course and there has not been (i) any change that would
     have an Acquiror Material Adverse Effect (a "Acquiror 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 Acquiror
     Material Adverse Change, (ii) except for regular quarterly dividends not in
     excess of $.595 per share of Acquiror Common Stock any declaration, setting
     aside or payment of any dividend or distribution (whether in cash, stock or
     property) with respect to any of Acquiror's capital stock, other than any
     dividend required to be paid pursuant to SECTION 2.2.4, (iii) any split,
     combination or reclassification of any of Acquiror's capital stock 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 capital stock or any
     issuance of an ownership interest in any Acquiror Subsidiary except as
     permitted by SECTION 4.2 after the date hereof (iv) any damage, destruction
     or loss, whether or not covered by insurance, that has or would have or is
     reasonably likely to have an Acquiror Material Adverse Effect or (v) any
     change in accounting methods, principles or practices by Acquiror or any
     Acquiror Subsidiary, except insofar as required by a change in GAAP.
 
          3.2.7  LITIGATION.  Except as disclosed in the Acquiror SEC Documents
     filed with the SEC prior to the date hereof or in SCHEDULE 3.2.7 to the
     Acquiror Disclosure Letter, there is no suit, action or proceeding pending,
     threatened in writing or to the Knowledge of Acquiror otherwise threatened
     against or affecting Acquiror or any Acquiror Subsidiary or any of their
     respective properties or assets that, individually or in the aggregate,
     could reasonably be expected to (A) have an Acquiror Material Adverse
     Effect or (B) prevent the consummation of any of the Transactions, nor is
     there any judgment, decree, injunction, rule or order of any Governmental
     Entity or arbitrator outstanding against Acquiror or any
 
                                       17
<PAGE>   23
 
     Acquiror Subsidiary or any of their respective properties or assets having,
     or which, insofar as reasonably can be foreseen, in the future would have
     any such effect.
 
        3.2.8  PROPERTIES.
 
             (i) Acquiror or one of the Acquiror Subsidiaries owns fee simple
        title (or where indicated leasehold estates) to each of the real
        properties identified in the Acquiror SEC Documents (the "Acquiror
        Properties"), in each case (except as provided below) free and clear of
        Encumbrances, except for (A) Encumbrances and Property Restrictions set
        forth in the Acquiror SEC Documents, (B) Property Restrictions imposed
        or promulgated by law or any governmental body or authority with respect
        to real property, including zoning regulations, (C) 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 the Company), and (D) mechanics',
        carriers', workmens', repairmens' and materialmens' liens and other
        Encumbrances, Property Restrictions and other limitations of any kind,
        if any, which, individually or in the aggregate, do not otherwise have
        an Acquiror Material Adverse Effect (such matters described in clauses
        (A) through (D) being hereinafter collectively referred to as the
        "Permitted Acquiror Liens"). Except as provided in SCHEDULE 3.2.8 to the
        Acquiror Disclosure Letter, policies of title insurance have been
        obtained insuring Acquiror's or the applicable Acquiror Subsidiaries'
        fee simple title or leasehold estate to the Acquiror Properties in
        amounts at least equal to the value of such Acquiror Properties at the
        time of issuance of such policy, subject only to the Permitted Acquiror
        Liens, and, to the Knowledge of Acquiror, such policies are, at the date
        hereof, in full force and effect and no material claim has been made
        against any such policy. Acquiror has not received written notice of any
        violation of any federal, state or municipal law, ordinance, order,
        regulation or requirement affecting any portion of any of the Acquiror
        Properties issued by any Governmental Entity, which remains uncured and
        which if not cured would be expected to have an Acquiror Material
        Adverse Effect. Neither Acquiror nor any of the Acquiror Subsidiaries
        has received any notice to the effect that (A) any condemnation or
        rezoning proceedings are pending or threatened with respect to any of
        the Acquiror Properties or (B) any zoning, building or similar law,
        code, ordinance, order or regulation is or will be violated by the
        continued maintenance, operation or use of any buildings or other
        improvements on any of the Acquiror Properties or by the continued
        maintenance, operation or use of the parking areas, in either case which
        remains uncured and which if not cured would be expected to have an
        Acquiror Material Adverse Effect.
 
             (ii) Acquiror has made available to the Company for review all
        executory agreements entered into by Acquiror or any Acquiror Subsidiary
        relating to the development or construction of residential or other real
        estate properties other than the Acquiror Properties (other than
        agreements for architectural, engineering, planning, accounting, legal
        or other professional services or construction agreements for material
        or labor) and which would be expected to have, individually or in the
        aggregate, an Acquiror Material Adverse Effect.
 
          3.2.9 ENVIRONMENTAL MATTERS.  Except as set forth on SCHEDULE 3.2.9 to
     the Acquiror Disclosure Letter or except as to matters previously
     remediated in accordance with applicable Law, none of Acquiror, or any
     Acquiror Subsidiary or, to Acquiror's Knowledge any other Person has caused
     or permitted (a) the presence of any Hazardous Materials at, in, on or
     under any of the Acquiror Properties in any amount, form, or location that
     would be unlawful, require investigation, notification of Governmental
     Entities, or remedial action, or otherwise result in potential material
     liabilities under any applicable local, state, or federal environmental
     Laws, or (b) any spills, releases, discharges or disposal of Hazardous
     Materials to have occurred or be presently occurring on or from the
     Acquiror Properties or at any other location as a result of any
     construction on or operation and use of such properties, which presence or
     occurrence would, individually or in the aggregate, have or is reasonably
     likely to have an Acquiror Material Adverse Effect; and in connection with
     the construction on or operation and use of the Acquiror Properties,
     Acquiror and the Acquiror Subsidiaries have not failed to comply in any
     material respect with all applicable local, state and federal environmental
     Laws, regulations, ordinances and
 
                                       18
<PAGE>   24
 
     administrative and judicial orders relating to the generation, use,
     recycling, reuse, sale, storage, handling, transport and disposal of any
     Hazardous Materials.
 
          3.2.10  ABSENCE OF CHANGES IN BENEFIT PLANS; ERISA COMPLIANCE.
 
             (i) Except as disclosed in the Acquiror SEC Documents filed with
        the SEC prior to the date hereof or in SCHEDULE 3.2.10(I) to the
        Acquiror Disclosure Letter and except as permitted by Section 4.2 (for
        the purpose of this sentence, as if SECTION 4.2 had been in effect since
        December 31, 1996), since the date of the most recent audited financial
        statements included in the Acquiror SEC Documents filed with the SEC
        prior to the date hereof, there has not been any adoption or amendment
        by Acquiror or any Acquiror Subsidiary, or any Person affiliated with
        Acquiror under Section 414 (b), (c), (m) or (o) of the Code (each, an
        "ERISA Affiliate of the Acquiror") of any bonus, pension, profit
        sharing, deferred compensation, incentive compensation, stock ownership,
        stock purchase, stock option, phantom stock, retirement, vacation,
        severance, disability, death benefit, hospitalization, medical or other
        employee benefit plan, arrangement or understanding (whether or not
        legally binding or oral or in writing) providing benefits to any current
        or former employee, officer or director of Acquiror, any Acquiror
        Subsidiary, or any ERISA Affiliate of the Acquiror (collectively,
        "Acquiror Benefit Plans"). No Acquiror Benefit Plan is subject to Title
        IV of ERISA or to Section 412 of the Code or Section 302 of ERISA.
 
             True and correct copies of each of the following have been made
        available to the Company: (i) the most recent annual report (Form 5500),
        if any, relating to each Acquiror Benefit Plan filed with the IRS, (ii)
        each Acquiror Benefit Plan, (iii) the trust agreement, if any, relating
        to each Acquiror Benefit Plan, (iv) the most recent summary plan
        description for each Acquiror Benefit Plan for which a summary plan
        description is required by ERISA and (v) the most recent determination
        letter, if any, issued by the IRS with respect to any Acquiror Benefit
        Plan qualified under Section 401 of the Code.
 
             As to any Acquiror Benefit Plan intended to be qualified under
        Section 401 of the Code, such Acquiror Benefit Plan satisfies in form
        the requirements of such Section and there has been no termination or
        partial termination of such Acquiror Benefit Plan within the meaning of
        Section 411(d)(3) of the Code.
 
             As to any such terminated Acquiror Benefit Plan intended to have
        been qualified under Section 401 of the Code, such terminated Acquiror
        Benefit Plan received a favorable determination letter from the IRS with
        respect to its termination.
 
             There are no actions, suits or claims pending (other than routine
        claims for benefits) or, to the Knowledge of Acquiror, threatened
        against, or with respect to, any of the Acquiror Benefit Plans or their
        assets that could reasonably be expected to have a Material Adverse
        Effect.
 
             To the Knowledge of Acquiror, there is no matter pending before the
        IRS, the United States Department of Labor or the PBGC with respect to
        any of the Acquiror Benefit Plans.
 
             All contributions required to be made to such Acquiror Benefit
        Plans pursuant to their terms and provisions have been timely made.
 
             Except as set forth in SCHEDULE 3.2.10(I) to the Acquiror
        Disclosure Letter, neither Acquiror nor any Acquiror Subsidiary is a
        party to or is bound by any severance agreement, program or policy. True
        and correct copies of all employment agreements with officers of
        Acquiror and the Acquiror Subsidiaries, and all vacation, overtime and
        other compensation policies of Acquiror and the Acquiror Subsidiaries
        relating to their employees have been made available to the Company.
 
             (ii) Except as described in the Acquiror SEC Documents or in
        SCHEDULE 3.2.10(II) to the Acquiror Disclosure Letter or as would not
        have an Acquiror Material Adverse Effect, (A) all Acquiror Benefit
        Plans, including any such plan that is an "employee benefit plan" as
        defined in Section 3(3) of ERISA, are in compliance with all applicable
        requirements of law, including ERISA and the Code, and (B) other than
        claims for benefits in the normal course of business,
 
                                       19
<PAGE>   25
 
        neither Acquiror, any Acquiror Subsidiary nor any ERISA Affiliate of the
        Acquiror has any liabilities or obligations with respect to any Acquiror
        Benefit Plans, whether accrued, contingent or otherwise, nor to the
        Knowledge of Acquiror are any such liabilities or obligations expected
        to be incurred. Except as set forth in SCHEDULE 3.2.10(II) to the
        Acquiror Disclosure Letter, the execution of, and performance of the
        Transactions will not (either alone or upon the occurrence of any
        additional or subsequent events) constitute an event under any Acquiror
        Benefit Plan, policy, arrangement or agreement or any trust or loan that
        will or may result in any payment (whether of severance pay or
        otherwise), acceleration, forgiveness of indebtedness, vesting,
        distribution, increase in benefits or obligation to fund benefits with
        respect to any employee or director of Acquiror, any Acquiror
        Subsidiary, or any ERISA Affiliate of the Acquiror.
 
        3.2.11  TAXES.
 
             (i) Each of Acquiror and each Acquiror Subsidiary has (A) 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 all such returns and reports are accurate and
        complete in all material respects; and (B) paid (or Acquiror has paid on
        its behalf) all Taxes shown on such returns and reports as required to
        be paid by it, and the most recent financial statements contained in the
        Acquiror SEC Documents reflect an adequate reserve for all material
        Taxes payable by Acquiror (and by those Acquiror Subsidiaries whose
        financial statements are contained therein) for all taxable periods and
        portions thereof through the date of such financial statements. True,
        correct and complete copies of all federal, state and local Tax returns
        and reports for Acquiror and each Acquiror Subsidiary, and all written
        communications relating thereto, have been delivered or made available
        to representatives of the Company. Except as set forth on SCHEDULE
        3.2.11 to the Acquiror Disclosure Letter, to the Knowledge of Acquiror,
        no deficiencies for any Taxes have been proposed, asserted or assessed
        against Acquiror or any of the Acquiror Subsidiaries, and no requests
        for waivers of the time to assess any such Taxes are pending.
 
             (ii) Acquiror (A) for all taxable years commencing with the taxable
        year ended December 31, 1993 through the most recent December 31, has
        been organized in conformity with the qualifications as a REIT (within
        the meaning of the Code) under the Code and has been subject to taxation
        as a REIT and has satisfied all requirements to qualify as a REIT for
        such years, (B) 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, 1997, and (C) has not taken or omitted to take any action which
        would reasonably be expected to result in a challenge to its status as a
        REIT, and to Acquiror's Knowledge, no such challenge is pending or
        threatened. Each Acquiror Subsidiary which is a partnership, joint
        venture or limited liability company has been treated during and since
        its formation and continues to be treated for federal income tax
        purposes as a partnership and not as a corporation or as an association
        taxable as a corporation. Each Acquiror Subsidiary which is a
        corporation for federal income tax purposes and with respect to which
        all of the outstanding capital stock is owned solely by Acquiror (or
        solely by an Acquiror Subsidiary that is a corporation wholly owned by
        Acquiror) is a "qualified REIT subsidiary" as defined in Section 856(i)
        of the Code. Neither Acquiror nor any Acquiror Subsidiary holds any
        asset (x) the disposition of which would be subject to rules similar to
        Section 1374 of the Code as a result of an election under IRS Notice
        88-19 or (y) that is subject to a consent filed pursuant to Section
        341(f) of the Code and the regulations thereunder.
 
          3.2.12  NO PAYMENTS TO EMPLOYEES, OFFICERS OR DIRECTORS.  Except as
     set forth in SCHEDULE 3.2.12 to the Acquiror Disclosure Letter, there is no
     employment or severance contract, or other agreement requiring payments to
     be made or increasing any amounts payable thereunder on a change of control
     or otherwise as a result of the consummation of any of the Transactions,
     with respect to any employee, officer, trust manager or director of
     Acquiror or any Acquiror Subsidiary.
 
          3.2.13  BROKERS; SCHEDULE OF FEES AND EXPENSES.  No broker, investment
     banker, financial advisor or other Person, other than Merrill, Lynch & Co.
     ("Acquiror Financial Advisor"), the fees and expenses of which have
     previously been disclosed to the Company and will be paid by Acquiror, is
     entitled to any
 
                                       20
<PAGE>   26
 
     broker's, finder's, financial advisor's or other similar fee or commission
     in connection with the Transactions based upon arrangements made by or on
     behalf of Acquiror or any Acquiror Subsidiary.
 
          3.2.14  COMPLIANCE WITH LAWS.  Except as disclosed in the Acquiror SEC
     Documents filed with the SEC prior to the date hereof, neither Acquiror nor
     any Acquiror Subsidiary 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 for violations and failures to comply that would not, individually
     or in the aggregate, reasonably be expected to result in an Acquiror
     Material Adverse Effect.
 
          3.2.15  CONTRACTS; DEBT INSTRUMENTS.  To the Knowledge of Acquiror,
     neither Acquiror nor any Acquiror Subsidiary is in violation of or in
     default under (nor 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 loan or credit agreement, note, bond, mortgage,
     indenture, lease, permit, concession, franchise, license or any other
     material contract, agreement, arrangement or understanding, to which it is
     a party or by which it or any of its properties or assets is bound, except
     as set forth in SCHEDULE 3.2.15 to the Acquiror Disclosure Letter and
     except for violations or defaults that would not, individually or in the
     aggregate, result in an Acquiror Material Adverse Effect.
 
          3.2.16  STATE TAKEOVER STATUTES.  Acquiror has taken all action
     necessary, if any, to exempt transactions between the Company and its
     Affiliates and Acquiror from the operation of any Takeover Statute.
 
          3.2.17  REGISTRATION STATEMENT; PROXY STATEMENT.  The Registration
     Statement will conform in all material respects to the requirements of the
     Securities Act and the rules and regulations of the SEC thereunder and
     shall not at any time the Registration Statement (including any amendments
     and supplements thereto) is declared effective by the SEC contain any
     untrue statement of a material fact or omit to state any material fact
     required to be stated therein or necessary in order to make the statements
     therein not misleading. The information supplied by Acquiror for inclusion
     or incorporation by reference in the Proxy Statement will not, on the date
     of the Proxy Statement is first mailed to the shareholders, at the time of
     the Shareholders Meetings, or at the Effective Time, contain any untrue
     statement of any material fact, or omit to state any material fact
     necessary in order to make the statements made therein, in light of the
     circumstances under which they were made, not false or misleading. If at
     any time prior to the Effective Time any event relating to the Acquiror or
     any of its respective Affiliates, officers or directors should be
     discovered by the Acquiror which should be set forth in an amendment to the
     Registration Statement or a supplement to the Proxy Statement, the Acquiror
     shall promptly inform the Company. Notwithstanding the foregoing, Acquiror
     makes no representation or warranty with respect to any information
     supplied by the Company which is contained or incorporated by reference in
     any of the foregoing documents.
 
          3.2.18  HART-SCOTT-RODINO ANTITRUST IMPROVEMENTS ACT OF 1976.  For
     purposes of determining compliance with the HSR, the Acquiror confirms that
     the conduct of its business consists solely of investing in, owning and
     operating real estate for the benefit of its shareholders.
 
          3.2.19  VOTE REQUIRED.  The affirmative vote of a majority of the
     shares of Acquiror Common Stock present in Person or by proxy at the
     Acquiror Shareholders Meeting is the only vote of the holders of any class
     or series of Acquiror's capital stock necessary (under applicable law or
     otherwise) to approve this Agreement and the Transactions.
 
          3.2.20  OPINION OF FINANCIAL ADVISOR.  The Directors of Acquiror have
     received the opinion of Acquiror Financial Advisor, satisfactory to
     Acquiror, a copy of which has been provided to the Company, to the effect
     that, as of the date of such opinion, the Exchange Ratio is fair to
     Acquiror from a financial point of view.
 
          3.2.21  INVESTMENT COMPANY ACT OF 1940.  Neither Acquiror nor any
     Acquiror Subsidiary is, or at the Effective Time will be, required to be
     registered under the 1940 Act.
 
                                       21
<PAGE>   27
 
          3.2.22  INSURANCE.  Acquiror maintains fire and casualty and general
     liability policies with reputable insurance carriers, which Acquiror
     reasonably believes provide full and adequate coverage for all normal risks
     incident to the business of Acquiror and Acquiror Subsidiaries and their
     respective properties and assets.
 
          3.2.23  INTERIM OPERATIONS OF MERGER SUB.  Merger Sub was formed
     solely for the purpose of engaging in the Transactions and has not engaged
     in any business activities or conducted any operations other than in
     connection with the Transactions.
 
                                   ARTICLE IV
 
                                   COVENANTS
 
     SECTION 4.1  CONDUCT OF BUSINESS BY THE COMPANY.  During the period from
the date of this Agreement to the Effective Time, the Company shall, and shall
cause the Company Subsidiaries each to, carry on its businesses in the usual,
regular and ordinary course in substantially the same manner as heretofore
conducted and use commercially reasonable efforts to preserve intact its current
business organization, goodwill and ongoing businesses, to keep available the
services of the present officers, employees and consultants of the Company and
the Company Subsidiaries and to preserve the present relationships of the
Company and the Company Subsidiaries with tenants, landlords, customers,
suppliers and other persons with which the Company or any of the Company
Subsidiaries has significant business relationships. Without limiting the
generality of the foregoing, the following additional restrictions shall apply:
during the period from the date of this Agreement to the earlier of the (i)
termination of this Agreement or (ii) Effective Time, except as set forth in
SCHEDULE 4.1 to the Company Disclosure Letter, the Company shall not and shall
cause the Company Subsidiaries not to (and not to authorize or commit or agree
to) without the prior written consent of Acquiror (which such consent shall not
be unreasonably delayed):
 
          4.1.1 (i) except for its regular quarterly dividends not in excess of
     $.395 per share of Common Shares per quarter, with customary record and
     payment dates, declare, set aside or pay any dividends on, or make any
     other distributions (whether in cash, stock or property or any combination
     thereof) in respect of any of the Company's shares of beneficial interest
     or other than the dividend required to be paid pursuant to SECTION
     2.2.4(I), (ii) split, combine or reclassify any shares of beneficial
     interest or issue or authorize the issuance of any other securities in
     respect of, in lieu of or in substitution for shares of such shares of
     beneficial interest or (iii) except in connection with the use of Common
     Shares to pay the exercise price or tax withholding in connection with the
     Company's Employee Stock Plans or as otherwise contemplated by or required
     by this Agreement, purchase, redeem or otherwise acquire any shares of
     beneficial interests of the Company or any options, warrants or rights to
     acquire, or security convertible into, shares of such beneficial interests;
 
          4.1.2 except as contemplated under or required pursuant to SECTIONS
     4.1.5 and 5.13.2, the Company's Amended and Restated Dividend Reinvestment
     Share Purchase Plan and Employee Share Purchase Plan and the exercise of
     share options or issuance of shares pursuant to stock rights, restricted
     share or performance share awards or warrants outstanding on the date of
     this Agreement, issue, deliver or sell, or grant any option or other right
     in respect of, any shares of beneficial interest, any other voting
     securities of the Company or any Company Subsidiary or any securities
     convertible into, or any rights, warrants or options to acquire, any such
     shares, voting securities or convertible securities; provided, however,
     that with respect to such Dividend Reinvestment Share Purchase Plan, such
     shares may only be issued, with respect to any dividend payment date after
     the date of this Agreement, in an amount equal to the dividend payments and
     not with respect to any optional cash payments;
 
          4.1.3 amend the charter, articles or certificate of incorporation,
     declaration of trust, bylaws, partnership agreement or other comparable
     charter or organizational documents of the Company or any Company
     Subsidiary or enter into, assume or amend any material contract, agreement
     or commitment, except in the ordinary course of business and consistent
     with past practice;
 
                                       22
<PAGE>   28
 
          4.1.4 in the case of the Company or any other Company Subsidiary,
     merge or consolidate with any Person;
 
          4.1.5 in any transaction or series of related transactions involving
     capital, securities or other assets (including cash) or indebtedness of the
     Company, a Company Subsidiary, or any combination thereof in excess of
     $100,000 individually or $500,000 in the aggregate: (i) acquire or agree to
     acquire by merging or consolidating with, or by purchasing all or a
     substantial portion of the equity securities or all or substantially all of
     the assets of, or by any other manner, any business or any corporation,
     partnership, limited liability company, joint venture, association, real
     estate investment trust, business trust or other business organization or
     division thereof or interest therein; (ii) sell, lease or otherwise dispose
     of any of the Company Properties or any assets (other than sales of the
     Company's or any Company Subsidiary's "for sale" housing units and
     condominiums sold or developed for sale in the ordinary course of business)
     or, except for any Development Properties or Future Development Properties,
     assign or encumber the right to receive income, dividends, distributions
     and the like, or otherwise subject any of the Company's properties or
     assets to any Encumbrance or Lien; (iii) make or agree to make any
     development or capital expenditures, except (A) in accordance with capital
     expenditure budgets previously delivered to and approved in writing by
     Acquiror or in accordance with construction and development budgets
     pertaining to the Development Properties (the "Development Budgets"), that
     have been previously delivered to and approved in writing by Acquiror,
     provided that within any Development Budget for a Development Property, the
     Company may allocate and reallocate the development and capital
     expenditures as it determines, or (B) in connection with pre-development,
     investigation and due diligence activities related to the Future
     Development Properties, which amounts shall not exceed $100,000 with
     respect to any Future Development Properties or $500,000 in the aggregate
     for all Future Development Properties; or (C) in connection with
     acquisition, development, pre-development, investigation and due diligence
     activities related to the Future Development Properties, which are
     disclosed in SCHEDULE 4.1 to the Company Disclosure Letter or (iv) incur
     any indebtedness for borrowed money or guarantee any such indebtedness of
     another Person (except as contemplated by subparagraph (iii) above), issue
     or sell any debt securities or warrants or other rights to acquire any debt
     securities of the Company or any Company Subsidiary, guarantee any debt
     securities 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,
     prepay or refinance any indebtedness or make any loans, advances or capital
     contributions to, or investments in, any other Person;
 
          4.1.6  INTENTIONALLY OMITTED
 
          4.1.7  make any tax election (unless required by law or necessary to
     preserve the Company's status as a REIT or of any Company Subsidiary as a
     partnership for federal income tax purposes);
 
          4.1.8  (i) change in any manner any of its methods, principles or
     practices of accounting in effect at the Financial Statement Date, or (ii)
     make or rescind any express or deemed election relating to taxes, settle or
     compromise any claim, action, suit, litigation, proceeding, arbitration,
     investigation, audit or controversy relating to taxes, except in the case
     of settlements or compromises relating to taxes on real property or sales
     taxes in an amount not to exceed, individually or in the aggregate,
     $100,000, or change any of its methods of reporting income or deductions
     for federal income tax purposes from those employed in the preparation of
     its federal income tax return for the most recently completed taxable year
     except, in the case of clause (i), as may be required by the SEC,
     applicable law or GAAP;
 
          4.1.9  except as specifically agreed to by Acquiror in connection with
     the execution of this Agreement, increase the compensation payable or to
     become payable to its officers or employees, except for increases in salary
     or wages of employees of the Company or the Company Subsidiaries who are
     not officers of the Company in the ordinary course of business in
     accordance with past practice; grant any severance or termination pay to,
     or enter into any employment or severance agreement with any director,
     trust manager, officer or other employee of the Company or any of the
     Company Subsidiaries, or amend or modify in any respect any existing
     employment or severance agreement; adopt any new employee
 
                                       23
<PAGE>   29
 
     benefit plan, incentive plan, severance plan, stock option or similar plan,
     grant new stock appreciation rights or amend any existing plan or rights,
     except such changes as are required by law;
 
          4.1.10  pay, discharge, settle or satisfy any claims, liabilities or
     objections (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) of the Company included in the Company SEC Documents filed
     prior to the date of this Agreement or incurred in the ordinary course of
     business consistent with past practice; settle any shareholder derivative
     or class action claims arising out of or in connection with any of the
     Transactions; and
 
          4.1.11  enter into or amend or otherwise modify any agreement or
     arrangement with Persons that are Affiliates or, as of the date hereof, are
     executive officers, trust managers or directors of the Company or any
     Company Subsidiary.
 
     SECTION 4.2  CONDUCT OF BUSINESS BY ACQUIROR.  During the period from the
date of this Agreement to the Effective Time, Acquiror shall, and shall cause
(or, in the case of Acquiror Subsidiaries that Acquiror does not control, shall
use commercially reasonable efforts to cause) the Acquiror Subsidiaries each to
carry on its businesses in the usual, regular and ordinary course in
substantially the same manner as heretofore conducted and use commercially
reasonable efforts to preserve intact its current business organization,
goodwill and ongoing businesses, to keep available the services of the present
officers, employees and consultants of Acquiror and the Acquiror Subsidiaries
and to preserve the present relationships of Acquiror and the Acquiror
Subsidiaries with tenants, landlords, customers, suppliers and other persons
with which Acquiror or any of the Acquiror Subsidiaries has significant business
relationships. Without limiting the generality of the foregoing, the following
additional restrictions shall apply: during the period from the date of this
Agreement to the Effective Time, except as set forth in SCHEDULE 4.2 to the
Acquiror Disclosure Letter, Acquiror shall not and shall cause (or, in the case
of Acquiror Subsidiaries which Acquiror does not control, shall use commercially
reasonable efforts to cause) the Acquiror Subsidiaries not to (and not to
authorize or commit or agree to) without the prior written consent of the
Company (which such consent shall not be unreasonably delayed):
 
          4.2.1 (i) except for regular quarterly dividends not in excess of
     $.595 per share of Acquiror Common Stock, with customary record and payment
     dates, declare, set aside or pay any dividends on, or make any other
     distributions (whether in cash, stock or property or any combination
     thereof) in respect of, any of Acquiror capital stock or partnership
     interests or stock in any Acquiror Subsidiary that is not directly or
     indirectly wholly owned by Acquiror, other than the dividend required to be
     paid pursuant to SECTION 2.2.4(I), (ii) except in connection with the
     Transactions, split, combine or reclassify any capital stock or partnership
     interests or issue or authorize the issuance of any other securities in
     respect of, in lieu of or in substitution for shares of such capital stock
     or partnership interests or (iii) except in connection with the use of
     Acquiror Common Stock to pay the exercise price or tax withholding in
     connection with the Acquiror's Employee Stock Plans purchase, redeem or
     otherwise acquire any shares of capital stock of Acquiror or any options,
     warrants or rights to acquire, or security convertible into, shares of
     capital stock of Acquiror;
 
          4.2.2 except as contemplated under or required pursuant to this
     Agreement (including without limitation SECTION 4.2.5), Acquiror's dividend
     reinvestment and stock purchase plan, Acquiror's employee stock purchase
     plan and Acquiror Employee Stock Plans, and the exercise of stock options
     or warrants outstanding on the date hereof, issue, deliver or sell, or
     grant any option or other right in respect of, any shares of capital stock,
     any other voting securities of Acquiror or any Acquiror Subsidiary or any
     securities convertible into, or any rights, warrants or options to acquire,
     any such shares, voting securities or convertible securities except to
     Acquiror or an Acquiror Subsidiary;
 
          4.2.3 except as otherwise contemplated by this Agreement, amend the
     charter, articles or certificate of incorporation, bylaws, code of
     regulations, partnership agreement or other comparable charter or
     organizational documents of Acquiror or any Acquiror Subsidiary;
 
                                       24
<PAGE>   30
 
          4.2.4  in the case of Acquiror or the Operating Partnership merge or
     consolidate with any Person;
 
          4.2.5  in any transaction or series of related transactions involving
     capital, securities, other assets (including cash) or indebtedness of
     Acquiror or an Acquiror Subsidiary or any combination thereof acquire or
     agree to acquire by merging or consolidating with, or by purchasing all or
     a substantial portion of the equity securities or all or substantially all
     assets of, or by any other manner, any business or any corporation,
     partnership, limited liability company, joint venture, association, real
     estate investment trust, business trust or other business organization or
     division thereof or interest therein if such acquisition would result in
     such acquired entity being a "Significant Subsidiary" within the meaning of
     Rule 1-02(w) of Regulation S-X, substituting 20% for 10% in the tests used
     therein to determine a Significant Subsidiary (or, in connection with an
     asset acquisition, would have resulted in the entity acquiring such assets
     being a "Significant Subsidiary" (substituting 20% for 10% in the tests
     used therein to determine a Significant Subsidiary) if such acquisition
     would have been made by a newly created subsidiary with no other assets);
 
          4.2.6  make or rescind any tax election (unless required by law or
     necessary to preserve Acquiror's status as a REIT or the status of any
     Acquiror Subsidiary as a partnership for federal income tax purposes);
 
          4.2.7  change in any material manner any of its methods, principles or
     practices of accounting in effect at the Acquiror Financial Statement Date,
     except as may be required by the SEC, applicable law or GAAP;
 
     SECTION 4.3  OTHER ACTIONS.  Each of Company, on the one hand, and Acquiror
and Merger Sub, on the other hand, shall not and shall use commercially
reasonable efforts to cause its respective subsidiaries and joint ventures not
to take any action that would result in (i) any of the representations and
warranties of such party (without giving effect to any "Knowledge"
qualification) set forth in this Agreement becoming untrue, or (ii) except as
contemplated by SECTIONS 7.1 and 7.2, any of the conditions to the Merger set
forth in ARTICLE VI not being satisfied.
 
                                   ARTICLE V
 
                              ADDITIONAL COVENANTS
 
     SECTION 5.1  PREPARATION OF THE REGISTRATION STATEMENT AND THE PROXY
STATEMENT; COMPANY SHAREHOLDERS MEETING AND ACQUIROR SHAREHOLDERS MEETING.
 
          5.1.1  As soon as practicable following the date of this Agreement,
     the Company and Acquiror shall prepare and file with the SEC a preliminary
     Proxy Statement in form and substance satisfactory to each of Acquiror and
     the Company, and Acquiror shall prepare and file with the SEC the
     Registration Statement, in which the Proxy Statement will be included as a
     prospectus. Each of the Company and Acquiror shall use commercially
     reasonable efforts to (i) respond to any comments of the SEC and (ii) 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 reasonably necessary to consummate the Merger. Each of the Company
     and Acquiror will use commercially reasonable efforts to cause the Proxy
     Statement to be mailed to the Company's shareholders or Acquiror's
     shareholders, respectively, as promptly as practicable after the
     Registration Statement is declared effective under the Securities Act. It
     shall be a condition precedent to the Company's obligation to mail the
     Proxy Statement that the opinion of Prudential referred to in SECTION
     3.1.21 not have been withdrawn. It shall be a condition precedent to
     Acquiror's obligation to mail the Proxy Statement that the opinion of
     Acquiror Financial Advisor referred to in SECTION 3.2.20 not have been
     withdrawn. 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 between such party or any of its representatives and the
     SEC, with respect to the Registration Statement or the Proxy Statement. The
     Registration Statement and the Proxy
 
                                       25
<PAGE>   31
 
     Statement shall 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, Acquiror or the Company, 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 Acquiror and the shareholders
     of the Company such amendment or supplement. The Proxy Statement shall
     include the recommendations of the Board of Directors of Acquiror in favor
     of the issuance of Acquiror Common Stock and of the Board of Trust Managers
     of the Company in favor of the Merger, provided that (i) the recommendation
     of the Board of Trust Managers of the Company may not be included or may be
     withdrawn if the Board of Trust Managers of the Company has accepted a
     proposal for a Superior Competing Transaction in accordance with the terms
     of SECTION 7.1; and (ii) the recommendation of the Board of Directors of
     Acquiror may not be included or may be withdrawn if the Board of Directors
     of the Acquiror has accepted a proposal for an Alternative Transaction in
     accordance with the terms of SECTION 7.2. Acquiror also shall take any
     action required to be taken under any applicable state securities or "blue
     sky" laws in connection with the issuance of Acquiror Stock pursuant to the
     Merger and will pay or cause an Acquiror Subsidiary to pay all expenses
     incident thereto. In connection with the preparation of the Proxy Statement
     and the Registration Statement, Acquiror shall use reasonable efforts to
     cause to be delivered to the Company prior to the mailing of the Proxy
     Statement to Acquiror's shareholders and the Company's shareholders, the
     opinion of King & Spalding, dated the date of the Proxy Statement, that (i)
     for its taxable year ended December 31, 1993 and for all subsequent taxable
     years ending on or before the Closing Date, Acquiror was organized and has
     operated in conformity with the requirements for qualification as a REIT
     under the Code and (ii) each Acquiror Subsidiary that is a partnership,
     joint venture or limited liability company has been during and since
     formation, and continues to be, treated as of such date, for federal income
     tax purposes, as a partnership and not as a corporation or an association
     taxable as a corporation. In connection with the preparation of the Proxy
     Statement and the Registration Statement, the Company shall use reasonable
     efforts to cause to be delivered to Acquiror and Merger Sub prior to the
     mailing of the Proxy Statement to the Company's shareholders and Acquiror's
     shareholders, the opinion of Winstead Sechrest & Minick P.C., dated the
     date of the Proxy Statement, that (i) for its taxable year ended December
     31, 1993 and for all subsequent taxable years ending on or before the
     Closing Date, the Company was organized and has operated in conformity with
     the requirements for qualification as a REIT under the Code and (ii) each
     Company Subsidiary that is a partnership, joint venture or limited
     liability company has been during and since formation, and continues to be,
     treated as of such date, for federal income tax purposes, as a partnership
     and not as a corporation or an association taxable as a corporation.
 
          5.1.2  The Company 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 the Company),
     convene and hold a meeting of its shareholders (the "Company Shareholders
     Meeting") for the purpose of obtaining the Company Shareholder Approvals.
     The Company will, through its Board of Trust Managers, recommend to its
     shareholders approval of this Agreement and the Transactions and use all
     reasonable efforts to solicit from its shareholders proxies in favor of
     approval of this Agreement and the Transactions and take all other action
     necessary or advisable to secure the vote of shareholders to obtain such
     approvals; provided that the recommendation of the Board of Trust Managers
     of the Company may be withdrawn if the Board of Trust Managers of the
     Company has accepted a proposal for a Superior Competing Transaction in
     accordance with the terms of SECTION 7.1.4.
 
          5.1.3  Acquiror 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 Acquiror),
     convene and hold a meeting of its shareholders (the "Acquiror Shareholders
     Meeting") for the purpose of obtaining the Acquiror Shareholder Approvals.
     Acquiror will, through its Board of Directors, recommend to its
     shareholders approval of this Agreement and the Transactions and use all
     reasonable efforts to solicit from its shareholders proxies in favor of the
     Acquiror Shareholder Approvals and take all other action necessary or
     advisable to secure the vote of shareholders to obtain such approvals;
     provided that the recommendation of the Board of Directors of Acquiror may
     be withdrawn if
 
                                       26
<PAGE>   32
 
     the Board of Directors of Acquiror has accepted a proposal for an
     Alternative Transaction in accordance with the terms of SECTION 7.2.4.
 
     SECTION 5.2  ACCESS TO INFORMATION; CONFIDENTIALITY.  Each of the Company
and Acquiror shall, and shall cause each of its respective subsidiaries
(including all Company Subsidiaries and all Acquiror Subsidiaries) and joint
ventures 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 during the period prior to
the Effective Time to all their respective properties, books, contracts,
commitments, personnel and records and, during such period, each of the Company
and Acquiror shall, and shall cause each of its respective subsidiaries
(including all Company Subsidiaries and all Acquiror Subsidiaries) 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 the Company and Acquiror will hold, and will use
commercially reasonable efforts to cause its and its respective subsidiaries
(including all Company Subsidiaries and all Acquiror Subsidiaries) and joint
ventures' 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 June 4, 1997 between the
Company and Acquiror (the "Confidentiality Agreement").
 
     SECTION 5.3  COMMERCIALLY REASONABLE EFFORTS; NOTIFICATION.
 
          5.3.1  Subject to the terms and conditions herein provided, the
     Company and Acquiror shall: (a) use commercially reasonable efforts to
     cooperate with one another in (i) determining which filings are required to
     be made prior to the Effective Time with, and which consents, approvals,
     permits or authorizations are required to be obtained prior to the
     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 and (ii) timely making all such filings
     and timely seeking all such consents, approvals, permits and
     authorizations, (b) use commercially reasonable efforts to obtain in
     writing any consents required from third parties to effectuate the Merger,
     such consents to be in reasonably satisfactory form to the Company and
     Acquiror; and (c) use commercially reasonable 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. If, at any time after the Effective Time, any further action
     is necessary or desirable to carry out the purpose of this Agreement, the
     proper officers and directors of the Company and Acquiror shall take all
     such necessary action. From the date hereof through the Effective Time, the
     Company shall timely file with the SEC all Company SEC Documents required
     to be so filed. From the date hereof through the Effective Time, the
     Acquiror shall timely file with the SEC all Acquiror SEC Documents required
     to be so filed.
 
          5.3.2  The Company shall give prompt notice to Acquiror, and Acquiror
     or Merger Sub shall give prompt notice to the Company, of (i) any
     representation or warranty made by it contained in this Agreement that is
     qualified as to materiality becoming untrue or inaccurate in any respect or
     any such representation or warranty that is not so qualified becoming
     untrue or inaccurate in any material respect or (ii) 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.
 
          5.3.3  COORDINATION OF DIVIDENDS.  Each of Acquiror and the Company
     shall coordinate with the other regarding the declaration and payment of
     dividends in respect of the Acquiror Common Stock and the Common Shares and
     the record dates and payment dates relating thereto, it being the intention
     of Acquiror and the Company that any holder of Common Shares shall not
     receive two dividends, or fail to receive one dividend, for any single
     calendar quarter with respect to its shares of Common Shares and/or
 
                                       27
<PAGE>   33
 
     any shares of Acquiror Common Stock any such holder receives in exchange
     therefor pursuant to the Merger.
 
     SECTION 5.4  AFFILIATES.  Prior to the Closing Date, the Company shall
deliver to Acquiror a letter identifying all Persons who are, at the time this
Agreement is submitted for approval to the shareholders of the Company,
"Affiliates" of the Company for purposes of Rule 145 under the Securities Act.
The Company shall use commercially reasonable efforts to cause each such Person
to deliver to Acquiror on or prior to the Closing Date a written agreement
substantially in the form attached as EXHIBIT A to this Agreement.
 
     SECTION 5.5  TAX TREATMENT.  Each of Acquiror and the Company shall use
commercially reasonable efforts to cause the Merger to qualify as a
reorganization under the provisions of Sections 368(a) of the Code and to obtain
the opinions of counsel referred to in SECTIONS 6.2.4, 6.2.5, 6.3.4 and 6.3.5.
 
     SECTION 5.6  ACQUIROR BOARD OF DIRECTORS.  Acquiror shall take all steps
necessary to cause the appointment as of the Effective Time of Robert L. Shaw to
the Board of Directors of Acquiror, or such other person as shall be selected
prior to the Effective Time by the Company Board of Trust Managers and as shall
be acceptable to Acquiror.
 
     SECTION 5.7  NO SOLICITATION OF TRANSACTIONS BY THE COMPANY.  (a) Subject
to SECTION 7.1, the Company shall not directly or indirectly, through any
officer, trust manager, employee, agent, investment banker, financial advisor,
attorney, accountant, broker, finder or other representative retained by the
Company, initiate, solicit or encourage (including by way of furnishing
non-public information or assistance) any inquiries or the making of any
proposal that constitutes, or may reasonably be expected to lead to, any
Competing Transaction, or enter into or maintain or continue discussions or
negotiate with any Person in furtherance of such inquiries or to obtain a
Competing Transaction, or agree to or endorse any Competing Transaction, or
authorize or permit any of the officers, trust managers, employees or agents of
the Company or any investment banker, financial advisor, attorney, accountant,
broker, finder or other representative retained by the Company to take any such
action, (b) the Company shall immediately cease and cause to be terminated any
existing activities, discussions or negotiations with any parties conducted
heretofore with respect to any Competing Transaction and will take the steps
necessary to inform such parties of the obligations undertaken in this SECTION
5.7 and (c) the Company shall notify Acquiror in writing (as promptly as
practicable) if it receives any inquiries, proposals or requests for information
relating to such matters. For purposes of this Agreement, "Competing
Transaction" shall mean any of the following with respect to the Company or any
Company Subsidiary (other than the Transactions or a transaction with Acquiror
or an Acquiror Subsidiary): (i) with respect only to the Company or any group of
Company Subsidiaries (acting in a single transaction or series of related
transactions) holding 20% or more of the assets of the Company and the Company
Subsidiaries taken as a whole, any merger, consolidation, share exchange,
business combination, or similar transaction; (ii) any sale, lease, exchange,
mortgage, pledge, transfer or other disposition of 20% or more of the assets or
equity securities of the Company and the Company Subsidiaries taken as a whole,
in a single transaction or series of related transactions, excluding any bona
fide financing transactions which do not, individually or in the aggregate, have
as a purpose or effect the sale or transfer of control of such assets; (iii) any
tender offer or exchange offer for 20% or more of the outstanding shares of
beneficial interest of the Company; (iv) any transaction resulting in the
issuance of shares representing 20% or more of the outstanding shares of
beneficial interest of the Company, or the filing of a registration statement
under the Securities Act in connection therewith; or (v) any public
announcements of a proposal, plan or intention to do any of the foregoing or any
agreement to engage in any of the foregoing.
 
     SECTION 5.8  NO SOLICITATION OF TRANSACTIONS BY ACQUIROR.  (a) Subject to
SECTION 7.2, Acquiror shall not directly or indirectly, through any officer,
director, employee, agent, investment banker, financial advisor, attorney,
accountant, broker, finder or other representative retained by Acquiror,
initiate, solicit or encourage (including by way of furnishing non-public
information or assistance) any inquiries or the making of any proposal that
constitutes, or may reasonably be expected to lead to, any Alternative
Transaction, or enter into or maintain or continue discussions or negotiate with
any Person in furtherance of such inquiries or to obtain an Alternative
Transaction, or agree to or endorse any Alternative Transaction, or authorize or
permit any of the officers, directors, employees or agents of Acquiror or any
investment banker, financial
 
                                       28
<PAGE>   34
 
advisor, attorney, accountant, broker, finder or other representative retained
by Acquiror to take any such action, (b) Acquiror shall immediately cease and
cause to be terminated any existing activities, discussions or negotiations with
any parties conducted heretofore with respect to any Alternative Transaction and
will take the steps necessary to inform such parties of the obligations
undertaken in this SECTION 5.8 and (c) Acquiror shall notify the Company in
writing (as promptly as practicable) if it receives any inquiries, proposals or
requests for information relating to such matters. For purposes of this
Agreement, "Alternative Transaction" shall mean any of the following with
respect to Acquiror or any Acquiror Subsidiary (other than the Transactions or a
transaction with the Company or a Company Subsidiary): (i) with respect only to
Acquiror or any group of Acquiror Subsidiaries (acting in a single transaction
or series of related transactions) holding 20% or more of the assets of Acquiror
and the Acquiror Subsidiaries taken as a whole, any merger, consolidation, share
exchange, business combination, or similar transaction; (ii) any sale, lease,
exchange, mortgage, pledge, transfer or other disposition of 20% or more of the
assets or equity securities of Acquiror and the Acquiror Subsidiaries taken as a
whole, in a single transaction or series of related transactions, excluding any
bona fide financing transactions which do not, individually or in the aggregate,
have as a purpose or effect the sale or transfer of control of such assets;
(iii) any tender offer or exchange offer for 20% or more of the outstanding
shares of capital stock of Acquiror; (iv) any transaction resulting in the
issuance of shares representing 20% or more of the outstanding shares of capital
stock of Acquiror, or the filing of a registration statement under the
Securities Act in connection therewith; or (v) any public announcements of a
proposal, plan or intention to do any of the foregoing or any agreement to
engage in any of the foregoing.
 
     SECTION 5.9  PUBLIC ANNOUNCEMENTS.  Acquiror and Merger Sub, on the one
hand, and the Company, on the other hand, will consult with each other before
issuing, and provide each other the opportunity to review and comment upon, any
press release or other public statements with respect to the Transactions,
including the Merger, and shall not issue any such press release or make any
such 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 will be in
the form agreed to by the parties hereto prior to the execution of this
Agreement.
 
     SECTION 5.10  LISTING.  Acquiror will promptly prepare and submit to the
NYSE a supplemental listing application covering Acquiror Common Stock issuable
in the Merger. Prior to the Effective Time, Acquiror shall use commercially
reasonable efforts to have the NYSE approve for listing, upon official notice of
issuance, the Acquiror Common Stock to be issued in the Merger.
 
     SECTION 5.11  LETTERS OF ACCOUNTANTS.
 
          5.11.1  The Company shall use commercially reasonable efforts to cause
     to be delivered to Acquiror "comfort" letters of Ernst & Young L.L.P., the
     Company's independent public accountants, dated and delivered on the date
     on which the Registration Statement shall become effective and as of the
     Effective Time, and addressed to Acquiror, in form and substance reasonably
     satisfactory to Acquiror and reasonably customary in scope and substance
     for letters delivered by independent public accountants in connection with
     transactions such as those contemplated by this Agreement.
 
          5.11.2  Acquiror shall use commercially reasonable efforts to cause to
     be delivered to the Company "comfort" letters of Price Waterhouse LLP,
     Acquiror's independent public accountants, dated and delivered on the date
     on which the Registration Statement shall become effective and as of the
     Effective Time, and addressed to the Company, in form and substance
     reasonably satisfactory to the Company and reasonably customary in scope
     and substance for letters delivered by independent public accountants in
     connection with transactions such as those contemplated by this Agreement.
 
     SECTION 5.12  TRANSFER AND GAINS TAXES.  Acquiror and the Company 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 (together with
any related interests, penalties or additions to tax, "Transfer and Gains
Taxes"). From and after the Effective Time, Acquiror shall cause the Surviving
Company to pay, without deduction or
 
                                       29
<PAGE>   35
 
withholding from any amounts payable to the holders of the Common Shares, all
Transfer and Gains Taxes (other than any such taxes that are solely the
liability of the holders of the Common Shares under applicable state law).
 
     SECTION 5.13  BENEFIT PLANS AND OTHER EMPLOYEE ARRANGEMENTS.
 
          5.13.1  BENEFIT PLANS.  After the Effective Time, Acquiror shall
     provide benefits to employees of the Company and the Company Subsidiaries
     that are not less favorable to such employees than those provided to
     similarly situated employees of Acquiror and the Acquiror Subsidiaries.
     With respect to any Acquiror Benefit Plan which is an "employee benefit
     plan" as defined in Section 3(3) of ERISA, solely for purposes of
     satisfying the service requirements, if any, to participate in such plans
     and to vest in benefits payable under such plans (but not for purposes of
     computing the amount of the benefits, or the existence of a benefit, under
     such plans), service with the Company or any Company Subsidiary shall be
     treated as service with Acquiror or the Acquiror Subsidiaries (as
     applicable); provided, however, that such service shall not be recognized
     to the extent that such recognition would result in a duplication of
     benefits (or is not otherwise recognized for such purposes under the
     Acquiror Benefit Plans).
 
          5.13.2  STOCK INCENTIVE PLAN.  Prior to or as of the Effective Time
     (a) in accordance with the terms of the restricted stock awards, 161,300
     Common Shares held by certain senior executive officers and independent
     Trust Managers shall become fully vested and no longer subject to
     forfeiture and (b) in accordance with the terms of the performance based
     stock and dividend equivalent awards, 260,000 Common Shares shall be issued
     to certain senior executive officers. Prior to or as of the Effective Time
     and solely with respect to individuals employed by the Company or a Company
     Subsidiary immediately prior to that date, the 1,940,000 shares of Common
     Shares subject to Stock Options granted under the Company's Share Option
     Plan, Long-Term Management Incentive Plan and Long-Term Employee Incentive
     Plan (collectively, the "Stock Incentive Plans") shall be converted and
     exchanged, without any action on the part of the holder thereof, into (i)
     an option to acquire, upon payment of the exercise price (which shall equal
     the exercise price per share for the option immediately prior to the
     Merger, divided by the Exchange Ratio multiplied by the number of shares to
     which the option relates), the number of shares of Acquiror Common Stock
     the option holder would have received pursuant to the Merger if the holder
     had exercised his or her option immediately prior thereto, rounded to the
     next lowest whole number and (ii) cash in lieu of the portion of any option
     that would have related to any fractional shares of Acquiror Common Stock
     absent the rounding required by the previous clause; provided, however,
     that in respect of any stock option which is an "incentive stock option"
     within the meaning of Section 422 of the Code, the conversion hereinabove
     provided for shall comply with the requirements of Section 424(a) of the
     Code, including the requirement that such converted options shall not give
     to the holder thereof any benefits additional to those which such holder
     had prior to such conversion under the option as originally granted.
 
          5.13.3  COOPERATION.  The Company and Acquiror shall cooperate in good
     faith with respect to the effectuation of the covenants described in
     SECTION 5.13.2.
 
     SECTION 5.14  INDEMNIFICATION; DIRECTORS' AND OFFICERS' INSURANCE.
 
          5.14.1  The Company shall, and from and after the Effective Time,
     Acquiror shall (collectively, the "Indemnifying Parties"), indemnify,
     defend and hold harmless each Person who is now or has been at any time
     prior to the date hereof or who becomes prior to the Effective Time, an
     officer, trust manager or director of the Company or any Company Subsidiary
     (the "Indemnified Parties") against all losses, claims, damages, costs,
     expenses (including attorneys' fees and expenses), liabilities or judgments
     or amounts that are paid in settlement of, with the approval of the
     Indemnifying Party (which approval shall not be unreasonably withheld or
     delayed), or otherwise in connection with any threatened or actual claim,
     action, suit, proceeding or investigation based on or arising out of the
     fact that such Person is or was an officer, trust manager or director of
     the Company or any Company Subsidiary at or prior to the Effective Time,
     whether asserted or claimed prior to, or at or after, the Effective Time
     ("Indemnified Liabilities"), including all Indemnified Liabilities based
     on, or arising out of, or pertaining to this Agreement or the Transactions,
     in each case to the full extent a corporation or Texas real estate
     investment trust is
 
                                       30
<PAGE>   36
 
     permitted under the applicable Governing Laws to indemnify its own
     directors or officers as the case may be (and Acquiror shall pay expenses
     in advance of the final disposition of any such action or proceeding to
     each Indemnified Party to the full extent permitted by law subject to the
     limitations set forth in the fourth sentence of this SECTION 5.14.1). Any
     Indemnified Parties proposing to assert the right to be indemnified under
     this SECTION 5.14 shall, promptly after receipt of notice of commencement
     of any action against such Indemnified Parties in respect of which a claim
     is to be made under this SECTION 5.14 against the Company, and from and
     after the Effective Time, Acquiror notify the Indemnifying Parties of the
     commencement of such action, enclosing a copy of all papers served. If any
     such action is brought against any of the Indemnified Parties and such
     Indemnified Parties notify the Indemnifying Parties of its commencement,
     the Indemnifying Parties will be entitled to participate in and, to the
     extent that they elect by delivering written notice to such Indemnified
     Parties promptly after receiving notice of the commencement of the action
     from the Indemnified Parties, to assume the defense of the action and after
     notice from the Indemnifying Parties to the Indemnified Parties of their
     election to assume the defense, the Indemnifying Parties will not be liable
     to the Indemnified Parties for any legal or other expenses except as
     provided below. If the Indemnifying Parties assume the defense, the
     Indemnifying Parties shall have the right to settle such action without the
     consent of the Indemnified Parties; provided, however, that the
     Indemnifying Parties shall be required to obtain such consent (which
     consent shall not be unreasonably withheld) if the settlement includes any
     admission or wrongdoing on the part of the Indemnified Parties or any
     decree or restriction on the Indemnified Parties or their officers or
     directors; provided, further, that no Indemnifying Parties, in the defense
     of any such action shall, except with the consent of the Indemnified
     Parties (which consent shall not be unreasonably withheld), consent to
     entry of any judgment or enter into any settlement that does not include as
     an unconditional term thereof the giving by the claimant or plaintiff to
     such Indemnified Parties of a release from all liability with respect to
     such action. The Indemnified Parties will have the right to employ their
     own counsel in any such action, and the fees, expenses and other charges of
     such counsel will be at the expense of the Indemnified Parties unless (i)
     the employment of counsel by the Indemnified Parties has been authorized in
     writing by the Indemnifying Parties, (ii) the Indemnified Parties have
     reasonably concluded (based on advice of counsel) that there may be legal
     defenses available to them that are different from or in addition to those
     available to the Indemnifying Parties (iii) a conflict or potential
     conflict exists (based on advice of counsel to the Indemnified Parties)
     between the Indemnified Parties and the Indemnifying Parties) (in which
     case the Indemnifying Parties will not have the right to direct the defense
     of such action on behalf of the Indemnified Parties) or (iv) the
     Indemnifying Parties have not in fact employed counsel to assume the
     defense of such action within a reasonable time after receiving notice of
     the commencement of the action, in each of which cases the reasonable fees,
     disbursements and other charges of counsel will be at the expense of the
     Indemnifying Parties. It is understood that the Indemnifying Parties shall
     not, in connection with any proceeding or related proceedings in the same
     jurisdiction, be liable for the reasonable fees, disbursements and other
     charges of more than one separate firm admitted to practice in such
     jurisdiction at any one time from all such Indemnified Parties unless (a)
     the employment of more than one counsel has been authorized in writing by
     the Indemnifying Parties, (b) any of the Indemnified Parties have
     reasonably concluded (based on advice of counsel) that there may be legal
     defenses available to them that are different from or in addition to those
     available to other Indemnified Parties or (c) a conflict or potential
     conflict exists (based on advice of counsel to the Indemnified Parties)
     between any of the Indemnified Parties and the other Indemnified Parties,
     in each case of which the Indemnifying Parties shall be obligated to pay
     the reasonable and appropriate fees and expenses of such additional counsel
     or counsels. The Indemnifying Parties will not be liable for any settlement
     of any action or claim effected without their written consent (which
     consent shall not be unreasonably withheld).
 
          5.14.2  The provisions of this SECTION 5.14 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 Acquiror and the Company.
 
          5.14.3  Acquiror shall either (i) extend the Company's existing
     directors and officers liability insurance policy as of the date hereof (or
     a policy providing coverage on the same or better terms and conditions) for
     acts or omissions occurring prior to the Effective Time by Persons who are
     currently
 
                                       31
<PAGE>   37
 
     covered by such insurance policy maintained by the Company for a period of
     six (6) years following the Effective Time, or (ii) add such Persons to the
     existing directors and officers liability insurance policy of Acquiror,
     provided, however, that for purposes of this subparagraph (ii), such
     insurance shall provide officers and trust managers of the Company the same
     coverage as similarly situated officers and directors of Acquiror and such
     insurance shall be maintained by Acquiror for a period of six years
     following the Effective Time. Notwithstanding the preceding sentence, in no
     event shall Acquiror or the Surviving Company be required to expend on
     average over such six year period in excess of 125% of the annual premium
     currently paid by the Company for such coverage and if the premium for such
     coverage on average over such six year period exceeds such amount, Acquiror
     or the Surviving Company shall purchase a policy with the greatest coverage
     available for such 125% of the annual premium.
 
          5.14.4  In the event that Acquiror 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 corporation 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 5.14, which obligations are expressly intended to be
     for the irreversible benefit of, and shall be enforceable by, each trust
     manager and officer covered hereby.
 
     SECTION 5.15  THE COMPANY RIGHTS PLAN.  The Company shall either (i)
redeem, effective immediately prior to the Effective Time, all the then
outstanding Rights (as defined in the Rights Agreement) for cash pursuant to and
in compliance with SECTION 23 of the Rights Agreement or (ii) take such other
action to terminate the Rights Agreement as of that time, as the Company and
Acquiror may mutually agree. The Company shall not redeem the Rights issued
under the Rights Agreement, or terminate the Rights Agreement, prior to the
Effective Time (other than in accordance with the preceding sentence) unless
required to do so by a court of competent jurisdiction; provided, however, that
the Company may take any of the foregoing actions if the Board of Trust Managers
of the Company shall have accepted a proposal for a Superior Competing
Transaction in accordance with the terms of SECTION 7.1.4.
 
                                   ARTICLE VI
 
                              CONDITIONS PRECEDENT
 
     SECTION 6.1  CONDITIONS TO EACH PARTY'S OBLIGATION TO EFFECT THE
MERGER.  The respective obligation of each party to effect the Merger and to
consummate the other Transactions contemplated to occur on the Closing Date is
subject to the satisfaction or waiver on or prior to the Effective Time of the
following conditions:
 
          6.1.1  SHAREHOLDER APPROVALS.  This Agreement shall have been approved
     and adopted by the Shareholder Approvals.
 
          6.1.2  LISTING OF SHARES.  The NYSE shall have approved for listing
     the Acquiror Common Stock to be issued in the Merger.
 
          6.1.3  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.
 
          6.1.4  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 Merger or any of the other Transactions shall be in
     effect.
 
          6.1.5  RELATED TRANSACTIONS.  The transactions contemplated by the
     Stock Purchase Agreements shall have been consummated in accordance with
     the terms of such agreements.
 
                                       32
<PAGE>   38
 
     SECTION 6.2  CONDITIONS TO OBLIGATIONS OF ACQUIROR AND MERGER SUB.  The
obligations of Acquiror and Merger Sub to effect the Merger 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 by
both Acquiror and Merger Sub:
 
          6.2.1  REPRESENTATIONS AND WARRANTIES.  The representations and
     warranties of the Company 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 Acquiror shall have received a
     certificate (which certificate may be qualified by Knowledge to the same
     extent as such representations and warranties are so qualified) signed on
     behalf of the Company by the chief executive officer or the chief financial
     officer of the Company to such effect. This condition shall be deemed
     satisfied unless all breaches of the Company's representations and
     warranties in this Agreement (without giving effect to any materiality
     qualification or limitation) are in the aggregate reasonably expected to
     have a Material Adverse Effect.
 
          6.2.2  PERFORMANCE OF OBLIGATIONS OF THE COMPANY.  The Company shall
     have performed in all material respects all obligations required to be
     performed by it under this Agreement at or prior to the Effective Time, and
     Acquiror shall have received a certificate signed on behalf of the Company
     by the chief executive officer or the chief financial officer of the
     Company to such effect.
 
          6.2.3  MATERIAL ADVERSE CHANGE.  Since the date of this Agreement,
     there shall have been no Material Adverse Change and Acquiror shall have
     received a certificate of the chief executive officer or chief financial
     officer of the Company certifying to such effect.
 
          6.2.4  OPINIONS RELATING TO REIT.  Acquiror shall have received an
     opinion of Counsel to the Company, dated as of the Closing Date, reasonably
     satisfactory to Acquiror that, for its taxable year ended December 31, 1993
     and all subsequent taxable years ending on or before the Closing Date, the
     Company was organized and has operated in conformity with the requirements
     for qualification as a REIT under the Code.
 
          6.2.5  OTHER TAX OPINION.  Acquiror shall have received either (i) a
     ruling from the IRS or (ii) an opinion dated as of the Closing Date from
     Counsel to Acquiror to the effect that the Merger should qualify as a
     reorganization under the provisions of Section 368(a) of the Code and that
     the Surviving Company will constitute a "qualified REIT subsidiary" under
     Section 856(i) of the Code.
 
          6.2.6  CONSENTS.  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 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 Acquiror Material Adverse Effect or a Material Adverse
     Effect.
 
     SECTION 6.3  CONDITIONS TO OBLIGATIONS OF THE COMPANY.
 
     The obligation of the Company to effect the Merger 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 by the
Company:
 
          6.3.1  REPRESENTATIONS AND WARRANTIES.  The representations and
     warranties of Acquiror 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 the Company shall have received a certificate (which certificate
     may be qualified by Knowledge to the same extent as the representations and
     warranties of Acquiror contained herein are so qualified) signed on behalf
     of Acquiror by the chief executive officer or the chief financial officer
     of Acquiror to such effect. This condition shall be deemed satisfied unless
     all breaches of Acquiror's representations and warranties in this Agreement
     (without giving effect to any materiality qualification or limitation) are
     in the aggregate reasonably expected to have an Acquiror Material Adverse
     Effect.
 
                                       33
<PAGE>   39
 
          6.3.2  PERFORMANCE OF OBLIGATIONS OF ACQUIROR.  Acquiror shall have
     performed in all material respects all obligations required to be performed
     by it under this Agreement at or prior to the Effective Time, and the
     Company shall have received a certificate of Acquiror signed on behalf of
     Acquiror by the chief executive officer or the chief financial officer of
     Acquiror to such effect.
 
          6.3.3  MATERIAL ADVERSE CHANGE.  Since the date of this Agreement,
     there shall have been no Acquiror Material Adverse Change and the Company
     shall have received a certificate of the chief executive officer or chief
     financial officer of Acquiror certifying to such effect.
 
          6.3.4  OPINION RELATING TO REIT STATUS.  The Company shall have
     received an opinion of Counsel to Acquiror dated as of the Closing Date,
     reasonably satisfactory to the Company that, for its taxable year ended
     December 31, 1993 and all subsequent taxable years ending on or before the
     Closing Date, Acquiror was organized and has operated in conformity with
     the requirements for qualification as a REIT under the Code and that, after
     giving effect to the Merger, Acquiror's proposed method of operation will
     enable it to continue to meet the requirements for qualification and
     taxation as a REIT under the Code (with customary exceptions, assumptions
     and qualifications and based upon customary representations).
 
          6.3.5  OTHER TAX OPINION.  The Company shall have received either (i)
     a ruling from the IRS or (ii) an opinion dated as of the Closing Date from
     Counsel to the Company, to the effect that the Merger should qualify as a
     reorganization under the provisions of Section 368(a) of the Code and that
     the Surviving Company will constitute a "qualified REIT subsidiary" under
     Section 856(i).
 
          6.3.6  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 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 Acquiror Material Adverse Effect or a Material Adverse
     Effect.
 
                                  ARTICLE VII
 
                                 BOARD ACTIONS
 
     SECTION 7.1  COMPANY BOARD ACTIONS.  Notwithstanding SECTION 5.7 or any
other provision of this Agreement to the contrary, to the extent, and only to
the extent, that the Board of Trust Managers of the Company, after consultation
with outside legal counsel, determines in good faith that such action is
required for the Board of Trust Managers of the Company to comply with its
fiduciary duties to shareholders imposed by applicable law, the Company may:
 
          7.1.1  disclose to the shareholders of the Company any information
     that, in the opinion of the Board of Trust Managers of the Company after
     consultation with outside legal counsel, is required to be disclosed under
     applicable law;
 
          7.1.2  to the extent applicable, comply with Rule 14e-2(a) promulgated
     under the Exchange Act with respect to a Competing Transaction;
 
          7.1.3  in response to an unsolicited request therefor, participate in
     discussions or negotiations with or furnish information with respect to the
     Company pursuant to a confidentiality agreement not materially less
     favorable to the Company than the Confidentiality Agreement (as determined
     by the Company's outside counsel), or otherwise respond to or deal with any
     Person in connection with a bona fide Competing Transaction proposed by
     such Person in writing, provided that the Company shall have notified
     Acquiror of such unsolicited requests or its participation in discussions
     or negotiations in accordance with SECTION 5.7.(C); and
 
          7.1.4  approve or recommend (and in connection therewith withdraw or
     modify its approval or recommendation of this Agreement or the Merger) a
     Superior Competing Transaction and enter into an agreement with respect to
     such Superior Competing Transaction (for purposes of this Agreement,
     "Superior Competing Transaction" means a bona fide proposal of a Competing
     Transaction made by a
 
                                       34
<PAGE>   40
 
     third party which has not been solicited or initiated by the Company in
     violation of SECTION 5.7 and which a majority of the members of Board of
     Trust Managers of the Company determines in good faith (A) to be more
     favorable to the Company's shareholders than the Merger and (B) is
     reasonably capable of being consummated.
 
     SECTION 7.2  ACQUIROR BOARD ACTIONS.  Notwithstanding SECTION 5.8 or any
other provision of this Agreement to the contrary, to the extent, and only to
the extent, that the Board of Directors of Acquiror, after consultation with
outside legal counsel, determines in good faith that such action is required for
the Board of Directors of Acquiror to comply with its fiduciary duties to
shareholders imposed by applicable law, Acquiror may:
 
          7.2.1  disclose to the shareholders of Acquiror any information that,
     in the opinion of the Board of Directors of Acquiror after consultation
     with outside legal counsel, is required to be disclosed under applicable
     law;
 
          7.2.2  to the extent applicable, comply with Rule 14e-2(a) promulgated
     under the Exchange Act with respect to an Alternative Transaction;
 
          7.2.3  in response to an unsolicited request therefor, participate in
     discussions or negotiations with or furnish information with respect to
     Acquiror pursuant to a confidentiality agreement not materially less
     favorable to Acquiror than the Company's obligations under the
     Confidentiality Agreement (as determined by Acquiror's outside counsel), or
     otherwise respond to or deal with any Person in connection with a bona fide
     Alternative Transaction proposed by such Person in writing, provided that
     Acquiror shall have notified the Company of such unsolicited requests or
     its participation in discussions or negotiations in accordance with SECTION
     5.8(C); and
 
          7.2.4  approve or recommend (and in connection therewith withdraw or
     modify its approval or recommendation of this Agreement or the Merger) an
     Alternative Transaction and enter into an agreement with respect to such an
     Alternative Transaction.
 
                                  ARTICLE VIII
 
                       TERMINATION, AMENDMENT AND WAIVER
 
     SECTION 8.1  TERMINATION.  This Agreement may be terminated at any time
prior to the Effective Time, whether before or after either of the Shareholder
Approvals are obtained:
 
          8.1.1  by mutual written consent duly authorized by the Board of
     Directors of Acquiror and the Board of Trust Managers of the Company;
 
          8.1.2  by Acquiror, upon a breach of any representation, warranty,
     covenant or agreement on the part of the Company set forth in this
     Agreement, or if any representation or warranty of the Company shall have
     become untrue, in either case such that the conditions set forth in SECTION
     6.2.1 or SECTION 6.2.2, as the case may be, would be incapable of being
     satisfied by January 31, 1998 (or as otherwise extended);
 
          8.1.3  by the Company, upon a breach of any representation, warranty,
     covenant or agreement on the part of Acquiror set forth in this Agreement,
     or if any representation or warranty of Acquiror shall have become untrue,
     in either case such that the conditions set forth in SECTION 6.3.1 or
     SECTION 6.3.2, as the case may be, would be incapable of being satisfied by
     January 31, 1998 (or as otherwise extended);
 
          8.1.4  by either Acquiror or the Company, if any judgment, injunction,
     order, decree or action by any Governmental Entity of competent authority
     preventing the consummation of the Merger or requiring actions as a
     condition precedent to the Merger which would result in a Material Adverse
     Change shall have become final and nonappealable;
 
          8.1.5  by either Acquiror or the Company, if the Merger shall not have
     been consummated before January 31, 1998; provided, however, that the right
     to terminate this Agreement under this SECTION 8.1.5 shall not be available
     to any party whose failure to fulfill any obligation under this Agreement
     has been the cause of or has resulted in the failure of the Merger to occur
     on or before such date;
 
                                       35
<PAGE>   41
 
          8.1.6  by either Acquiror or the Company (unless the Company is in
     breach of its obligations under SECTION 5.1.2) if, upon a vote at a duly
     held Company Shareholders Meeting or any adjournment thereof, the Company
     Shareholder Approvals shall not have been obtained as contemplated by
     SECTION 5.1;
 
          8.1.7  by either Acquiror (unless Acquiror is in breach of its
     obligations under SECTION 5.1.3) or the Company if, upon a vote at a duly
     held Acquiror Shareholders Meeting or any adjournment thereof, the Acquiror
     Shareholder Approvals shall not have been obtained as contemplated by
     SECTION 5.1;
 
          8.1.8  by the Company, if prior to the Company Shareholders Meeting,
     the Board of Trust Managers of the Company shall have withdrawn or modified
     in any manner adverse to Acquiror its approval or recommendation of the
     Merger or this Agreement in connection with, or approved or recommended, a
     Superior Competing Transaction; provided, however, that such termination
     shall not be effective prior to the payment of the Break-Up Fee to the
     extent required by SECTION 8.2.2 hereof;
 
          8.1.9  by the Acquiror, if prior to the Acquiror Shareholders Meeting,
     the Board of Directors of Acquiror shall have withdrawn or modified in any
     manner adverse to the Company its approval or recommendation of the Merger
     or this Agreement in connection with, or approved or recommended, an
     Alternative Transaction; provided, however, that such termination shall not
     be effective prior to the payment of the Termination Fee to the extent
     required by SECTION 8.2.3 hereof;
 
          8.1.10  by Acquiror, if (i) prior to the Company Shareholders Meeting,
     the Board of Trust Managers of the Company shall have withdrawn or modified
     in any manner adverse to Acquiror its approval or recommendation of the
     Merger or this Agreement in connection with, or approved or recommended,
     any Superior Competing Transaction or (ii) the Company shall have entered
     into a definitive agreement with respect to any Competing Transaction;
     provided, however, that such termination shall not be effective prior to
     the payment of the Break-Up Fee to the extent required by SECTION 8.2.2
     hereof; and
 
          8.1.11  by the Company, if (i) prior to the Acquiror Shareholders
     Meeting, the Board of Directors of Acquiror shall have withdrawn or
     modified in any manner adverse to the Company its approval or
     recommendation of the Merger or this Agreement in connection with, or
     approved or recommended, any Alternative Transaction or (ii) Acquiror shall
     have entered into a definitive agreement with respect to any Alternative
     Transaction; provided, however, that such termination shall not be
     effective prior to the payment of the Termination Fee to the extent
     required by SECTION 8.2.3 hereof.
 
     SECTION 8.2  EXPENSES.
 
          8.2.1  Except as otherwise specified in this SECTION 8.2 or agreed in
     writing by the parties, all out-of-pocket costs and expenses incurred in
     connection with this Agreement and the transactions contemplated hereby
     shall be paid by the party incurring such cost or expense.
 
          8.2.2  The Company agrees that if this Agreement shall be terminated
     (i) pursuant to SECTION 8.1.2, 8.1.6, 8.1.8 or 8.1.10 and, in the case of
     SECTION 8.1.2 or 8.1.6, following the date of this Agreement and prior to
     termination, the Company shall have received a proposal constituting a
     Competing Transaction and within 12 months following termination the
     Company shall enter into a definitive agreement providing for a Competing
     Transaction, then the Company will pay as directed by Acquiror a fee in an
     amount equal to the Break-Up Fee (provided that Acquiror was not in
     material breach of any of its representations, warranties, covenants or
     agreements hereunder at the time of termination); and (ii) pursuant to
     SECTION 8.1.2 or 8.1.6, then the Company will pay an amount equal to the
     Break-Up Expenses. Payment of any of such amounts shall be made, as
     directed by Acquiror, by wire transfer of immediately available funds
     promptly, but in no event later than two business days after such
     termination. The payment of the Break-Up Fee shall be compensation and
     liquidated damages for the loss suffered by Acquiror as the result of the
     failure of the Merger 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, other than the payment of the Break-Up
     Fee. The "Break-Up Fee" shall be an amount equal to the lesser of (i)
     $10,000,000 (the "Base Amount") and (ii) the sum of (A) the maximum amount
     that can be paid to Acquiror in the year in which this Agreement is
     terminated (the "Termination Year")
 
                                       36
<PAGE>   42
 
     and in all relevant taxable years thereafter without causing it to fail to
     meet the requirements of Sections 856(c)(2) and (3) of the Code (the "REIT
     Requirements") for such year, 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 Acquiror, and (B) in the event Acquiror receives
     a ruling from the IRS (a "Break-Up Fee Ruling") holding that Acquiror's
     receipt of the Base Amount would either constitute Qualifying Income or
     would be excluded from gross income within the meaning of the REIT
     Requirements, the Base Amount less the amount payable under clause (A)
     above. If the amount payable for the Termination Year under the preceding
     sentence is less than the Base Amount, the Company shall place the
     remaining portion of the Base Amount in escrow and shall not release any
     portion thereof to Acquiror unless and until the Company receives either of
     the following: (i) a letter from Acquiror independent accountants
     indicating the maximum amount that can be paid at that time to Acquiror
     without causing Acquiror to fail to meet the REIT Requirements for any
     relevant taxable year, together with either an IRS ruling issued to
     Acquiror or an opinion of Acquiror's tax counsel to the effect that such
     payment would not be treated as includable in the income of Acquiror for
     any prior taxable year, in which event Company shall pay to Acquiror such
     maximum amount, or (ii) a Break-Up Fee Ruling, in which event the Company
     shall pay to Acquiror the unpaid Base Amount. The Break-Up Fee shall be
     reduced by any amounts previously paid in respect of Break-Up Expenses. The
     Company's obligation to pay any unpaid portion of the Break-Up Fee shall
     terminate five years from the date of this Agreement and the Company shall
     have no obligation to make any further payments notwithstanding that the
     entire Base Amount has not been paid as of such date. The "Break-Up
     Expenses" shall be an amount equal to the lesser of (i) Acquiror's out-
     of-pocket expenses incurred in connection with this Agreement and the
     Transactions (including, without limitation, all attorneys', accountants'
     and investment bankers' fees and expenses) but in no event in an amount
     greater than $1,500,000 (the "Expense Fee Base Amount") and (ii) the sum of
     (A) the maximum amount that can be paid to Acquiror in the Termination Year
     and in all relevant taxable years thereafter without causing it to fail to
     meet the REIT Requirements for such year, determined as if the payment of
     such amount did not constitute Qualifying Income, as determined by
     independent accountants to Acquiror and (B) in the event Acquiror receives
     a ruling from the IRS (an "Expense Fee Ruling") holding that Acquiror's
     receipt of the Expense Fee Base Amount would either constitute Qualifying
     Income or would be excluded from gross income within the meaning of the
     REIT Requirements, the Expense Fee Base Amount less the amount payable
     under clause (A) above. The Company's obligation to pay any unpaid portion
     of the Break-Up Expenses shall terminate five years from the date of this
     Agreement and the Company shall have no obligation to make any further
     payments notwithstanding that the entire amount of Break-Up Expenses has
     not been paid as of such date. If the amount payable for the Termination
     Year (as determined above) is less than the Expense Fee Base Amount, the
     Company shall place the remaining portion of the Expense Fee Base Amount in
     escrow and shall not release any portion thereof to Acquiror unless and
     until the Company receives either of the following: (i) a letter from
     Acquiror's independent accountants indicating the maximum amount that can
     be paid at that time to Acquiror without causing Acquiror to fail to meet
     the REIT Requirements for any relevant taxable year, together with either
     an IRS ruling issued to Acquiror or an opinion of Acquiror's tax counsel to
     the effect that such payment would not be treated as includable in the
     income of Acquiror for any prior taxable year, in which event Company shall
     pay to Acquiror such maximum amount or (ii) an Expense Fee Ruling, in which
     event the Company shall pay to Acquiror the unpaid Expense Fee Base Amount.
 
          8.2.3  Acquiror agrees that if this Agreement shall be terminated (i)
     pursuant to SECTION 8.1.3, 8.1.7, 8.1.9 or 8.1.11 and, in the case of
     SECTION 8.1.3 or 8.1.7, following the date of this Agreement and prior to
     termination, Acquiror shall have received a proposal constituting an
     Alternative Transaction and within 12 months following termination Acquiror
     shall enter into a definitive agreement providing for an Alternative
     Transaction, then Acquiror will pay as directed by the Company a fee in an
     amount equal to the Termination Fee (provided that the Company was not in
     material breach of any of its representations,
 
                                       37
<PAGE>   43
 
     warranties, covenants or agreements hereunder at the time of termination);
     and (ii) pursuant to SECTION 8.1.3 or 8.1.7, then Acquiror will pay an
     amount equal to the Termination Expenses. Payment of any of such amounts
     shall be made, as directed by the Company, by wire transfer of immediately
     available funds promptly, but in no event later than two business days
     after such termination. The payment of the Termination Fee shall be
     compensation and liquidated damages for the loss suffered by the Company as
     the result of the failure of the Merger 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, other than the payment of the
     Termination Fee. The "Termination Fee" shall be an amount equal to the
     lesser of (i) $10,000,000 (the "Termination Base Amount") and (ii) the sum
     of (A) the maximum amount that can be paid to the Company in the
     Termination Year and in all relevant taxable years thereafter without
     causing it to fail to meet the REIT Requirements for such year, determined
     as if the payment of such amount did not constitute Qualifying Income, as
     determined by independent accountants to the Company, and (B) in the event
     the Company receives a ruling from the IRS (a "Termination Fee Ruling")
     holding that the Company's receipt of the Termination Base Amount would
     either constitute Qualifying Income or would be excluded from gross income
     within the meaning of the REIT Requirements, the Termination Base Amount
     less the amount payable under clause (A) above. If the amount payable for
     the Termination Year under the preceding sentence is less than the
     Termination Base Amount, Acquiror shall place the remaining portion of the
     Termination Base Amount in escrow and shall not release any portion thereof
     to the Company unless and until Acquiror receives any one or combination of
     the following: (i) a letter from the Company's independent accountants
     indicating the maximum amount that can be paid at that time to the Company
     without causing the Company to fail to meet the REIT Requirements for any
     relevant taxable year, together with either an IRS ruling issued to the
     Company or an opinion of the Company's tax counsel to the effect that such
     payment would not be treated as includable in the income of the Company for
     any prior taxable year, in which event Acquiror shall pay to the Company
     such maximum amount, or (ii) a Termination Fee Ruling, in which event
     Acquiror shall pay to the Company the unpaid Termination Base Amount. The
     Termination Fee shall be reduced by any amounts previously paid in respect
     of Termination Expenses. Acquiror's obligation to pay any unpaid portion of
     the Termination Fee shall terminate five years from the date of this
     Agreement and Acquiror shall have no obligation to make any further
     payments notwithstanding that the entire Termination Base Amount has not
     been paid as of such date. The "Termination Expenses" shall be an amount
     equal to the lesser of (i) the Company's out-of-pocket expenses incurred in
     connection with this Agreement and the Transactions (including, without
     limitation, all attorneys', accountants' and investment bankers' fees and
     expenses) but in no event in an amount greater than $1,500,000 (the
     "Termination Expense Base Amount") and (ii) the sum of (A) the maximum
     amount that can be paid to the Company in the Termination Year and in all
     relevant taxable years thereafter without causing the Company to fail to
     meet the REIT Requirements for such year, determined as if the payment of
     such amount did not constitute Qualifying Income, as determined by
     independent accountants to the Company and (B) in the event the Company
     receives a ruling from the IRS (a "Termination Expense Ruling") holding
     that the Company's receipt of the Termination Expense Base Amount would
     either constitute Qualifying Income or would be excluded from gross income
     within the meaning of the REIT Requirements, the Termination Expense Base
     Amount less the amount payable under clause (A) above. Acquiror's
     obligation to pay any unpaid portion of the Termination Expenses shall
     terminate five years from the date of this Agreement and Acquiror shall
     have no obligation to make any further payments notwithstanding that the
     entire amount of Termination Expense Base Amount has not been paid as of
     such date. If the amount payable for the Termination Year (as determined
     above) is less than the Termination Expense Base Amount, Acquiror shall
     place the remaining portion of the Termination Expense Base Amount in
     escrow and shall not release any portion thereof to the Company unless and
     until Acquiror receives either of the following: (i) a letter from the
     Company's independent accountants indicating the maximum amount that can be
     paid at that time to the Company without causing the Company to fail to
     meet the REIT Requirements for any relevant taxable year, together with
     either an IRS ruling issued to the Company or an opinion of the Company's
     tax counsel to the effect that such payment would not be treated as
     includable in the income of the Company for any prior taxable year, in
     which event Acquiror shall pay to the Company such maximum amount, or (ii)
     a Termination Expense
 
                                       38
<PAGE>   44
 
     Ruling, in which event Acquiror shall pay to the Company the unpaid
     Termination Expense Base Amount.
 
     SECTION 8.3  EFFECT OF TERMINATION.  In the event of termination of this
Agreement by either the Company or Acquiror as provided in SECTION 8.1, this
Agreement shall forthwith become void and have no effect, without any liability
or obligation on the part of Acquiror, or the Company, other than the last
sentence of SECTION 5.2, SECTION 8.2, this SECTION 8.3, ARTICLE IX and ARTICLE X
and except to the extent that such termination results from a material breach by
a party of any of its representations, warranties, covenants or agreements set
forth in this Agreement.
 
     SECTION 8.4  AMENDMENT.  This Agreement may be amended by the parties in
writing by action of their respective Boards of Directors or Board of Trust
Managers, as the case may be, at any time before or after any Shareholder
Approvals are obtained and prior to the filing of the Articles of Merger with
the office of the County Clerk of Dallas County, Texas and the office of the
Secretary of State of the State of Georgia, provided, however, that, after the
Shareholder Approvals are obtained, no such amendment, modification or
supplement shall alter the amount or change the form of the consideration to be
delivered to the Company's shareholders or alter or change any of the terms or
conditions of this Agreement if such alteration or change would adversely affect
the Company's shareholders or Acquiror's shareholders.
 
     SECTION 8.5  EXTENSION; WAIVER.  At any time prior to the 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 8.4, waive compliance with any of the agreements or
conditions of the other party contained in this Agreement. Any agreement on the
part of a party to any such extension or waiver shall be valid only if set forth
in an instrument in writing signed on behalf of such party. Any waivers pursuant
to clause (c) of the second preceding sentence (i) of the provisions of SECTION
4.1.5 may be given in writing on behalf of Acquiror by a duly authorized officer
of Acquiror and (ii) of the provisions of SECTION 4.2.5 may be given in writing
by or on behalf of the Company by a duly authorized officer of the Company. 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 IX
 
                          DEFINITIONS AND CONSTRUCTION
 
     SECTION 9.1  CERTAIN DEFINITIONS.  For purposes of this Agreement:
 
          "1940 Act" means the Investment Company Act of 1940, as amended.
 
          "Acquiror" has the meaning ascribed to it in the introductory
     paragraph of this Agreement.
 
          "Acquiror Benefit Plans" has the meaning ascribed to it in SECTION
     3.2.10(I).
 
          "Acquiror Common Stock" means common stock, par value $.01 per share,
     of Acquiror.
 
          "Acquiror Disclosure Letter" means the letter previously delivered to
     the Company by Acquiror disclosing certain information in connection with
     this Agreement.
 
          "Acquiror Employee Stock Plans" has the meaning ascribed to it in
     SECTION 3.2.3.
 
          "Acquiror Financial Advisor" has the meaning ascribed to it in SECTION
     3.2.13.
 
          "Acquiror Financial Statement Date" has the meaning ascribed to it in
     SECTION 3.2.6.
 
          "Acquiror Material Adverse Change" has the meaning ascribed to it in
     SECTION 3.2.6.
 
          "Acquiror Material Adverse Effect" has the meaning ascribed to it in
     SECTION 3.2.1.
 
          "Acquiror Options" has the meaning ascribed to it in SECTION 3.2.3.
 
          "Acquiror Preferred Stock" means preferred stock, par value $.01 per
     share, of Acquiror.
 
                                       39
<PAGE>   45
 
          "Acquiror Properties" has the meaning ascribed to it in SECTION 3.2.8.
 
          "Acquiror SEC Documents" has the meaning ascribed to it in SECTION
     3.2.5.
 
          "Acquiror Shareholder Approvals" has the meaning ascribed to it in
     SECTION 3.2.4.
 
          "Acquiror Shareholders Meeting" has the meaning ascribed to it in
     SECTION 5.1.3.
 
          "Acquiror Subsidiary" means Merger Sub, any Subsidiary of the
     aforementioned entities and any other entity of which Acquiror is the
     direct or indirect general partner or as to which the Company has the right
     or power to elect a majority of the board of directors or other governing
     body.
 
          "Addison" has the meaning ascribed to it in the Recitals of the
     Agreement.
 
          "Addison Stock Purchase Agreement" has the meaning ascribed to it in
     the Recitals of the Agreement.
 
          An "Affiliate" of any Person means another Person that directly or
     indirectly, through one or more intermediaries, controls, is controlled by,
     or is under common control with, such first Person.
 
          "Agreement" means this instrument as originally executed, including
     the Annexes, Exhibits and Schedules to the Acquiror Disclosure Letter and
     the Company Disclosure Letter, or as it may be from time to time
     supplemented or amended by one or more supplements or amendments hereto
     entered pursuant to the applicable provisions hereof.
 
          "Alternative Transaction" has the meaning ascribed to it in SECTION
     5.8.
 
          "Armada" has the meaning ascribed to it in the Recitals of the
     Agreement.
 
          "Armada Stock Purchase Agreement" has the meaning ascribed to it in
     the Recitals of the Agreement.
 
          "Applicable Bodies" has the meaning ascribed to it in SECTION 1.3.
 
          "Articles of Merger" has the meaning ascribed to it in SECTION 1.3.
 
          "Base Amount" has the meaning ascribed to it in SECTION 8.2.2.
 
          "Break-Up Expenses" has the meaning ascribed to it in SECTION 8.2.2.
 
          "Break-Up Fee" has the meaning ascribed to it in SECTION 8.2.2.
 
          "Break-Up Fee Ruling" has the meaning ascribed to it in SECTION 8.2.2.
 
          "Certificates" has the meaning ascribed to it in SECTION 2.2.3.
 
          "Closing Date" has the meaning ascribed to it in SECTION 1.2.
 
          "Code" has the meaning ascribed to it in the Recitals of the
     Agreement.
 
          "Common Shares" has the meaning ascribed to it in the Recitals of the
     Agreement.
 
          "Company" has the meaning ascribed to it in the introductory paragraph
     of this Agreement.
 
          "Company Benefit Plans" has the meaning ascribed to it in SECTION
     3.1.11(I).
 
          "Company's Bylaws" has the meaning ascribed to it in SECTION 3.1.1.
 
          "Company's Charter" has the meaning ascribed to it in SECTION 3.1.1.
 
          "Company Disclosure Letter" means the letter previously delivered to
     Acquiror by the Company disclosing certain information in connection with
     this Agreement.
 
          "Company Employee Stock Plans" has the meaning ascribed to it in
     SECTION 3.1.3.
 
          "Company Interests" means, collectively, the Company Subsidiaries and
     all direct or indirect interests of the Company or any Company Subsidiary.
 
                                       40
<PAGE>   46
 
          "Company Options" has the meaning ascribed to it in SECTION 3.1.3.
 
          "Company Properties" has the meaning ascribed to it in SECTION 3.1.8.
 
          "Company SEC Documents" has the meaning ascribed to it in SECTION
     3.1.5.
 
          "Company Shareholder Approvals" has the meaning ascribed to it in
     SECTION 3.1.4.
 
          "Company Shareholders Meeting" has the meaning ascribed to it in
     SECTION 5.1.2.
 
          "Company Subsidiaries" means, collectively, those companies set forth
     in Section A of SCHEDULE 3.1.2 to the Company Disclosure Letter, any
     subsidiary of any of the aforementioned entities and any other entity of
     which the Company is the direct or indirect general partner or as to which
     the Company has the right or power to elect a majority of the board of
     directors or other governing body.
 
          "Competing Transaction" has the meaning ascribed to it in SECTION 5.7.
 
          "Confidentiality Agreement" has the meaning ascribed to it in SECTION
     5.2.
 
          "Cureton" has the meaning ascribed to it in the Recitals of this
     Agreement.
 
          "Development Budgets" has the meaning ascribed to it in SECTION 4.1.5.
 
          "Development Properties" has the meaning ascribed to it in SECTION
     3.1.8.
 
          "Effective Time" has the meaning ascribed to it in SECTION 1.3.
 
          "Encumbrances" has the meaning ascribed to it in SECTION 3.1.8.
 
          "ERISA" means the Employee Retirement Income Security Act of 1974, as
     amended.
 
          "ERISA Affiliate of the Acquiror" has the meaning ascribed to it in
     SECTION 3.2.10(I).
 
          "ERISA Affiliate of the Company" has the meaning ascribed to it in
     SECTION 3.1.11(I).
 
          "Exchange Act" means the Securities Exchange Act of 1934, as amended.
 
          "Exchange Agent" has the meaning ascribed to it in SECTION 2.2.1.
 
          "Exchange Fund" has the meaning ascribed to it in SECTION 2.2.2.
 
          "Exchange Ratio" has the meaning ascribed to it in SECTION 2.1.2.
 
          "Expense Fee Base Amount" has the meaning ascribed to it in SECTION
     8.2.2.
 
          "Expense Fee Ruling" has the meaning ascribed to it in SECTION 8.2.2.
 
          "Final Company Dividend" has the meaning ascribed to it in SECTION
     2.2.4(I).
 
          "Financial Statement Date" has the meaning ascribed to it in SECTION
     3.1.6.
 
          "Future Development Properties" has the meaning ascribed to it in
     SECTION 3.1.8.
 
          "GAAP" means generally accepted accounting principles.
 
          "Glover" has the meaning ascribed to it in the Recitals of this
     Agreement.
 
          "Governing Laws" has the meaning ascribed to it in SECTION 1.1.
 
          "Governmental Entity" means any federal, state or local government or
     any court, administrative or regulatory agency or commission or other
     governmental authority or agency, domestic or foreign.
 
          "Hazardous Materials" means those substances, materials, and items, in
     any form, whether solid, liquid, gaseous, semisolid, or any combination
     thereof, whether waste materials, raw materials, chemicals, finished
     products, byproducts, or any other material or article, which are regulated
     by or form the basis of liability under federal, state or local
     environmental, health, and safety statutes or regulations including,
     without limitation, hazardous wastes, hazardous substances, pollutants,
     contaminants, asbestos,
 
                                       41
<PAGE>   47
 
     polychlorinated biphenyls, petroleum (including, but not limited to, crude
     oil, petroleum-derived substances, waste, or breakdown or decomposition
     products thereof or any fraction thereof), and radioactive substances.
 
          "HSR Act" means the Hart-Scott-Rodino Antitrust Improvements Act of
     1976, as amended.
 
          "Indebtedness" has the meaning ascribed to it in SECTION 3.1.16(II).
 
          "Indemnified Liabilities" has the meaning ascribed to it in SECTION
     5.14.1.
 
          "Indemnified Parties" has the meaning ascribed to it in SECTION
     5.14.1.
 
          "Indemnifying Parties" has the meaning ascribed to it in SECTION
     5.14.1.
 
          "IRS" means the United States Internal Revenue Service.
 
          "Knowledge" where used herein with respect to the Company shall mean
     the actual knowledge of the Persons named in SCHEDULE 9.1 to the Company
     Disclosure Letter and where used with respect to Acquiror shall mean the
     actual knowledge of the Persons named in SCHEDULE 9.1 to the Acquiror
     Disclosure Letter.
 
          "Laws" mean any judgment, order, decree, statute, law, ordinance, rule
     or regulation.
 
          "Liens" mean any pledges, claims, liens, charges, encumbrances and
     security interests of any kind or nature whatsoever.
 
          "Material Adverse Change" has the meaning ascribed to it in SECTION
     3.1.6.
 
          "Material Adverse Effect" has the meaning ascribed to it in SECTION
     3.1.1.
 
          "Merger" has the meaning ascribed to it in the Recitals of this
     Agreement.
 
          "Merger Consideration" has the meaning ascribed to it in SECTION
     2.1.2.
 
          "Merger Sub" has the meaning ascribed to it in the introductory
     paragraph of this Agreement.
 
          "NYSE" means the New York Stock Exchange.
 
          "Operating Partnership" means Post Apartment Homes, L.P., a Georgia
     limited partnership.
 
          "PBGC" means the Pension Benefit Guaranty Corporation.
 
          "Permitted Acquiror Liens" has the meaning ascribed to it in SECTION
     3.2.8.
 
          "Person" means an individual, corporation, partnership, limited
     liability company, joint venture, association, trust, unincorporated
     organization or other entity.
 
          "Preferred Shares" means the preferred shares of beneficial interest,
     par value $.01 per share, of the Company.
 
          "Property Restrictions" has the meaning ascribed to it in SECTION
     3.1.8.
 
          "Proxy Statement" has the meaning ascribed to it in SECTION 3.1.4.
 
          "Prudential" has the meaning ascribed to it in SECTION 3.1.14.
 
          "Qualifying Income" has the meaning ascribed to it in SECTION 8.2.2.
 
          "Registration Statement" has the meaning ascribed to it in SECTION
     3.2.4.
 
          "Regulation S-K" means Regulation S-K promulgated under the Securities
     Act the and Exchange Act.
 
          "Regulation S-X" means Regulator S-X promulgated under the Securities
     Act the and Exchange Act.
 
          "REIT" has the meaning ascribed to it in SECTION 3.1.12(II).
 
                                       42
<PAGE>   48
 
          "REIT Requirements" has the meaning ascribed to it in SECTION 8.2.2.
 
          "Rights Agreement" has the meaning ascribed to it in SECTION 3.1.6.
 
          "SEC" means the United States Securities and Exchange Commission.
 
          "Securities Act" means the Securities Act of 1933, as amended.
 
          "Shareholder Approvals" has the meaning ascribed to it in SECTION
     3.2.4.
 
          "Shareholders Meetings" means collectively the Acquiror Shareholders
     Meeting and the Company Shareholders Meeting.
 
          "Shaw" has the meaning ascribed to it in the Recitals of this
     Agreement.
 
          "Stock Incentive Plans" has the meaning ascribed to it in SECTION
     5.13.2.
 
          "Stock Purchase Agreements" has the meaning ascribed to it in the
     Recitals of 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 20% or more of the capital stock or other equity interests of
     such corporation, partnership, limited liability company, joint venture or
     other legal entity.
 
          "Superior Competing Transaction" has the meaning ascribed to it in
     SECTION 7.1.4.
 
          "Surviving Company" has the meaning ascribed to it in SECTION 1.1.
 
          "Takeover Statute" has the meaning ascribed to it in SECTION 3.1.17.
 
          "Taxes" mean and shall include all federal, state, local and foreign
     income, property, sales, excise and other taxes, tariffs or governmental
     charges of any nature whatsoever, together with penalties, interest or
     additions to Tax with respect thereto.
 
          "Termination Base Amount" has the meaning ascribed to it in SECTION
     8.2.3.
 
          "Termination Expense Base Amount" has the meaning ascribed to it in
     SECTION 8.2.3.
 
          "Termination Expense Ruling" has the meaning ascribed to it in SECTION
     8.2.3.
 
          "Termination Expenses" has the meaning ascribed to it in SECTION
     8.2.3.
 
          "Termination Fee" has the meaning ascribed to it in SECTION 8.2.3.
 
          "Termination Fee Ruling" has the meaning ascribed to it in SECTION
     8.2.3.
 
          "Termination Year" has the meaning ascribed to it in SECTION 8.2.2.
 
          "Transactions" has the meaning ascribed to it in the Recitals of this
     Agreement.
 
          "Transfer and Gains Tax" has the meaning ascribed to it in SECTION
     5.12.
 
          "Unconsolidated Company Financial Statements" has the meaning ascribed
     to it in SECTION 3.1.5.
 
          "Units" has the meaning ascribed to it in SECTION 3.2.3.
 
          "Williams" has the meaning ascribed to it in the Recitals of this
     Agreement.
 
     SECTION 9.2  RULES OF CONSTRUCTION.
 
          (i) "This Agreement" means this instrument as originally executed,
     including the Annexes, Exhibits and Schedules hereto, or as it may be from
     time to time supplemented or amended by one or more supplements or
     amendments hereto entered pursuant to the applicable provisions hereof;
 
          (ii) "includes" and "including" are not limiting, and, in each case,
     shall be construed as if followed by the words "without limitation," "but
     not limited to" or words of similar import;
 
                                       43
<PAGE>   49
 
          (iii) "may not" is prohibitive, and not permissive;
 
          (iv) "shall" is mandatory, and not permissive;
 
          (v) "or" is not exclusive (i.e., if a party "may do (a), (b) or (c),"
     then the party may do all of, any one of, or any combination of, (a), (b)
     or (c)) unless the context expressly provides otherwise;
 
          (vi) all references in this instrument to designated Articles,
     Sections, Exhibits, and Schedules are to the designated Articles, Sections,
     Annexes, Exhibits, and Schedules of this instrument as originally executed;
 
          (vii) all references herein to constitutions, treaties, statutes,
     laws, rules, regulations, ordinances, codes or orders include any successor
     thereto or replacement thereof, and mean references to any of them as
     amended, modified or supplemented from time to time;
 
          (viii) the words "herein," "hereof," "hereto" and "hereunder" and
     other words of similar import refer to this Agreement as a whole and not to
     any particular Article, Section or other subdivision;
 
          (ix) all terms used herein which are defined in the Securities Act,
     the Exchange Act or the rules and regulations promulgated thereunder have
     the meanings assigned to them therein unless otherwise defined herein; and
 
          (x) all accounting terms not otherwise defined herein have the meaning
     assigned to them in accordance with GAAP.
 
                                   ARTICLE X
 
                               GENERAL PROVISIONS
 
     SECTION 10.1  NONSURVIVAL OF REPRESENTATIONS AND WARRANTIES.  None of the
representations and warranties in this Agreement or in any instrument delivered
pursuant to this Agreement shall survive the Effective Time. This SECTION 10.1
shall not limit any covenant or agreement of the parties which by its terms
contemplates performance after the Effective Time.
 
     SECTION 10.2  NOTICES.  All notices, requests, claims, demands and other
communications under this Agreement shall be in writing and shall be deemed
given if 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):
 
          10.2.1 if to Acquiror, to:
 
           Post Properties, Inc.
           3350 Cumberland Circle
           Suite 2200
           Atlanta, Georgia 30339
           Attention: John T. Glover
           Telecopy: (770) 850-4400
 
           with a copy to:
 
           King & Spalding
           191 Peachtree Street
           Atlanta, Georgia 30303
           Attention: John J. Kelley III
           Telecopy: (404) 572-5100
 
                                       44
<PAGE>   50
 
          10.2.2 if to the Company, to:
 
           Columbus Realty Trust
           15851 Dallas Parkway
           Suite 855
           Dallas, Texas 75248
           Attention: Robert L. Shaw
           Telecopy: (972) 770-5109
 
               with a copy to:
 
           Winstead Sechrest & Minick, P.C.
           5400 Renaissance Tower
           1201 Elm Street
           Dallas, Texas 75270
           Attention: Michelle P. Goolsby
           Telecopy: (214) 745-5390
 
           and:
 
           Skadden, Arps, Slate, Meagher & Flom LLP
           919 Third Avenue
           New York, New York 10022
           Attention: J. Gregory Milmoe
           Telecopy: (212) 735-3594
 
     SECTION 10.3  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 parties.
 
     SECTION 10.4  ENTIRE AGREEMENT; NO THIRD-PARTY BENEFICIARIES.  This
Agreement, the Confidentiality Agreement and the other agreements entered into
in connection with the Transactions (a) constitute the entire agreement and
supersedes all prior agreements and understandings, both written and oral,
between the parties with respect to the subject matter of this Agreement and,
(b) except for the provisions of ARTICLE II, SECTION 5.13.2 and SECTION 5.14,
are not intended to confer upon any Person other than the parties hereto any
rights or remedies.
 
     SECTION 10.5  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, REGARDLESS OF
THE LAWS THAT MIGHT OTHERWISE GOVERN UNDER APPLICABLE PRINCIPLES OF CONFLICT OF
LAWS THEREOF, EXCEPT TO THE EXTENT THAT THE MERGER OR OTHER TRANSACTIONS
CONTEMPLATED HEREBY ARE REQUIRED TO BE GOVERNED BY THE GOVERNING LAW.
 
     SECTION 10.6  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.
 
     SECTION 10.7  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 federal court of competent
jurisdiction, 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
 
                                       45
<PAGE>   51
 
State of Georgia 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.
 
     SECTION 10.8  SEVERABILITY.  If any provision of this Agreement is held to
be illegal, invalid or unenforceable under any current or future law, and if the
rights or obligations of the parties under this Agreement would not be
materially and adversely affected thereby, such provision shall be fully
separable, and this Agreement shall be construed and enforced as if such
illegal, invalid or unenforceable provision had never comprised a part thereof,
the remaining provisions of this Agreement shall remain in full force and effect
and shall not be affected by the illegal, invalid or unenforceable provision or
by its severance therefrom. In lieu of such illegal, invalid or unenforceable
provision, there shall be added automatically as a part of this Agreement, a
legal, valid and enforceable provision as similar in terms to such illegal,
invalid or unenforceable provision as may be possible, and the parties hereto
request the court or any arbitrator to whom disputes relating to this Agreement
are submitted to reform the otherwise illegal, invalid or unenforceable
provision in accordance with this SECTION 10.8.
 
                   [BALANCE OF PAGE INTENTIONALLY LEFT BLANK]
 
                                       46
<PAGE>   52
 
                               SIGNATURE PAGE TO
                          AGREEMENT AND PLAN OF MERGER
 
     IN WITNESS WHEREOF, Acquiror, Merger Sub and the Company have caused this
Agreement to be signed by their respective officers thereunto duly authorized,
all as of the date first written above.
 
                                          ACQUIROR:
 
                                          POST PROPERTIES, INC.
 
                                          By:      /s/ JOHN T. GLOVER
                                            ------------------------------------
                                                       John T. Glover
                                                         President
 
                                          MERGER SUB:
 
                                          POST LP HOLDINGS, INC.
 
                                          By:      /s/ JOHN T. GLOVER
                                            ------------------------------------
                                                       John T. Glover
                                                         President
 
                                          COMPANY:
 
                                          COLUMBUS REALTY TRUST
 
                                          By:      /s/ ROBERT L. SHAW
                                            ------------------------------------
                                                       Robert L. Shaw
                                                  Chief Executive Officer
 
                                       47
<PAGE>   53
 
                                                                       EXHIBIT A
 
                        FORM OF COMPANY AFFILIATE LETTER
 
                                                      , 1997
 
Post Properties, Inc.
3350 Cumberland Circle
Suite 2200
Atlanta, Georgia 30339
 
Ladies and Gentlemen:
 
     I have been advised that as of the date of this letter, I may be deemed to
be an "affiliate" of Columbus Realty Trust, a Texas real estate investment trust
(the "Company"), as the term affiliate is defined for purposes of paragraphs (c)
and (d) of Rule 145 of the rules and regulations (the "Rules and Regulations")
of the Securities and Exchange Commission (the "Commission") under the
Securities Act of 1933, as amended (the "Securities Act"). Pursuant to the terms
of the Agreement and Plan of Merger, dated as of August   , 1997 (the "Merger
Agreement"), by and among Post Properties, Inc., a Georgia corporation ("Post"),
Post LP Holdings, Inc., a Georgia corporation ("Merger Sub"), and the Company,
the Company will be merged with and into Merger Sub (the "Merger").
 
     As a result of the Merger, I may receive shares of common stock, par value
$.01 per share, of Post (the "Post Securities"). I would receive such shares in
exchange for shares owned by me of beneficial interest, par value $.01 per
share, of the Company.
 
     I represent, warrant and covenant to Post that in the event I receive any
Post Securities as a result of the Merger:
 
          A. I shall not make any sale, transfer or other disposition of the
     Post Securities in violation of the Securities Act or the Rules and
     Regulations.
 
          B. I have carefully read this letter and the Agreement and discussed
     the requirements of such documents and other applicable limitations upon my
     ability to sell, transfer or otherwise dispose of the Post Securities to
     the extent I felt necessary with my counsel or counsel for the Company.
 
          C. I have been advised that the issuance of the Post Securities to me
     pursuant to the Merger will be registered with the Commission under the
     Securities Act on a Registration Statement on Form S-4. However, I have
     also been advised that, since at the time the Merger is to be submitted for
     a vote of the shareholders of the Company, I may be deemed to have been an
     affiliate of the Company and the distribution by me of the Post Securities
     has not been registered under the Securities Act, I may not sell, transfer
     or otherwise dispose of the Post Securities issued to me pursuant to the
     Merger unless (i) such sale, transfer or other disposition is registered
     under the Securities Act, (ii) such sale, transfer or other disposition is
     made in conformity with the volume and other limitations of Rule 145
     promulgated by the Commission under the Securities Act or (iii) such sale,
     transfer or other disposition is otherwise exempt from registration under
     the Securities Act.
 
          D. I understand that Post is under no obligation to register the sale,
     transfer or other disposition of the Post Securities by me or on my behalf
     under the Securities Act. By its execution hereof, Post agrees that it
     will, as long as I own any Post Securities, take all reasonable efforts to
     make timely filings with the Commission of all reports required to be filed
     by it pursuant to the Securities Exchange Act of 1934, as
<PAGE>   54
 
     amended, and will promptly furnish upon my written request a written
     statement confirming that such reports have been so timely filed.
 
          E. I also understand and agree that stop transfer instructions will be
     given to Post's transfer agent with respect to the Post Securities and that
     there will be placed on the certificates for the Post Securities issued to
     me, or any substitutions therefor, a legend to the effect of the above
     restrictions. It is understood and agreed that such legend shall be removed
     upon surrender of certificates bearing such legend by delivery of
     substitute certificates without such legend if (i) one year shall have
     elapsed from the date I acquired the Post Securities and the provisions of
     Rule 145(d)(2) are then available to me, (ii) two years shall have elapsed
     from the date the undersigned acquired the Post Securities and the
     provisions of Rule 145(d)(3) are then applicable to me or (iii) Post has
     received either an opinion of counsel, in form and substance reasonably
     satisfactory to Post, or a "no action" letter obtained by me from the staff
     of the Commission, to the effect that the restrictions imposed by Rule 145
     under the Securities Act no longer apply to me.
 
     Execution of this letter should not be considered an admission on my part
that I am an "affiliate" of the Company as described in the first paragraph of
this letter, or as a waiver of any rights I may have to object to any claim that
I am such an affiliate on or after the date of this letter.
 
     Capitalized terms not otherwise defined herein shall have the meanings
ascribed to them in the Merger Agreement.
 
                                          Very truly yours,
 
                                          --------------------------------------
                                          Name:
 
Accepted this     day of
          , 1997 by
 
POST PROPERTIES, INC.
 
By:
   --------------------------------------------------------
   Name:
   Title:
 
                                        2

<PAGE>   1

                                                                     EXHIBIT 99
[POST PROPERTIES LOGO]
NEWS
POST PROPERTIES, INC.
3350 Cumberland Circle, N.W. Suite 2200 Atlanta, Georgia 30339-3363 
(404)850-4400


For Immediate Release:                                     Atlanta, Georgia
                                                           August 4, 1997

                   POST PROPERTIES and COLUMBUS REALTY TRUST
                                ANNOUNCE MERGER

         Post Properties, Inc. (NYSE: PPS) and Columbus Realty Trust (NYSE:
CLB) today announced that they have entered into a definitive agreement and
plan of merger pursuant to which Columbus would be merged into Post.

         The merger, which was unanimously approved by both companies' Boards
of Directors, will combine Columbus' 7,526 apartment homes (including its
development portfolio), 83% of which are in Dallas, with Post Properties' 21,673
(including its development portfolio) apartment homes throughout the Southeast.
Following the merger, Post Properties will be the largest multi-family real
estate investment trust (REIT) concentrating on the development of upscale
multi-family apartment homes in the major metropolitan markets of the Southeast
and Southwest, with a total market capitalization of approximately $2.2 billion.
The combined companies will operate under the Post Properties name, with
headquarters in Atlanta.

         The merger has been structured as a tax-free merger transaction and
will be treated as a purchase for accounting purposes. Under the terms of the
merger agreement, each share of Columbus will be exchanged for .615 shares of
Post Properties. Based upon the closing stock price of Post Properties on
August 1, 1997, the transaction values Columbus at approximately $600 million,
including debt and other liabilities. The merger is subject to approval of
shareholders of both companies and other customary dosing conditions, and is
expected to be completed in November 1997. Upon completion of the merger,
Robert L. Shaw, Vice Chairman and CEO of Columbus, will become a member of the
senior management team of Post Properties and will join the Board of Directors 
of Post Properties.

         John A. Williams, Chairman of the Board and Chief Executive Officer
of Post Properties, Inc. said, "We consider Dallas as one of the few major
metropolitan markets in the country with the long-term appeal of our home base,
Atlanta, and we had therefore targeted Dallas as the next major market in which
to introduce our Post Apartment Homes (R). This merger will immediately provide
Post with a critical mass of outstanding upscale apartment communities in
Dallas and a wonderful base for continued expansion in that market, and in
Houston and Denver, where Columbus is also active. We are impressed with the
exceptionally high quality of the Columbus portfolio, which is in large measure
comparable to our own, and we are delighted to be joining forces with the
outstanding team which Robert Shaw has assembled at Columbus. Columbus has a
proven track record of building successful upscale apartment communities in
niche and infill locations and will fit right in line with Post's commitment to
"Setting the Standard" for the apartment industry."



     Post (R) is a registered service mark of Post Apartment Homes, L.P.
     
<PAGE>   2



Press Release                     -2-                          August 4, 1997

         John T. Glover, President of Post Properties, Inc., commented, "The
presence of a substantial base of operations in Dallas will obviously
complement and diversify our Atlanta base, and the merger offers an
attractive, accretive, opportunity for Post to enter Dallas, Houston and
Denver, while maintaining the integrity of our longstanding development
strategy. Our balance sheet strength will allow us to reissue virtually all of
Columbus' currently outstanding debt with the obvious benefit of significantly
reduced interest expense. With these savings, coupled with the expense savings
resulting from the combination of the two companies, we expect the transaction
to be immediately accretive on the order of approximately $0.10 per share for
1998. All in all, the transaction is one that we believe is favorable for the
shareholders of both companies."

         Robert L. Shaw, Vice Chairman and Chief Executive Officer of
Columbus, stated, "For twenty-five years, Post Properties has truly set the
standard by which all other multi-family companies are measured. Our Columbus
associates - and I personally - are flattered and excited to be joining this
exceptional team of dedicated professionals."


         Shaw added, "Our board is confident that the merger will accelerate
our growth and lower our cost of capital and are pleased that we will have 
created immediate geographic diversity for the Columbus shareholder."

         Merrill Lynch & Co. acted as exclusive financial advisor to Post
Properties and Prudential Securities acted as exclusive financial advisor to
Columbus Realty Trust.

         Certain matters discussed in this press release are forward-looking
statements within the meaning of the federal securities laws. Although the
Companies believe that the expectations reflected in such forward-looking
statements are based upon reasonable assumptions, they can give no assurance
that such expectations, including the expectation with respect to potential
accretion, will be achieved. Factors that could cause the actual results to 
differ materially from the Companies' current expectations include general 
economic conditions, local real estate conditions, the timely development and 
lease-up of communities and the other risks detailed from time to time in the 
Companies' SEC reports, including the annual reports on Form 10-K for the year
ended December 31, 1996.

         Post Properties is one of the largest developers and operators of
upscale multi-family apartment communities in the southeastern United States. 
Post operates as a self-administered and self-managed equity Real Estate 
Investment Trust whose primary business consists of developing and managing 
Post(R) brand name apartment communities for its own account.

For additional information contact:


                             POST PROPERTIES, INC.
                              Timothy A. Peterson
                               Karen E. Misuraca
                                  770-850-4400

                             COLUMBUS REALTY TRUST
                                J. Michael Lewis
                                 972-770-5182




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