PENNSYLVANIA REAL ESTATE INVESTMENT TRUST
8-K, 1997-12-22
REAL ESTATE INVESTMENT TRUSTS
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                       SECURITIES AND EXCHANGE COMMISSION

                              WASHINGTON, DC 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)            December 17, 1997
                                                            -----------------


                      Pennsylvania Real Estate Investment Trust
                  ---------------------------------------------------
                  (Exact Name of Registrant as Specified in Charter)


        Pennsylvania                   1-6300                  23-6216339
- ----------------------------        -----------             ------------------
(State or Other Jurisdiction        (Commission               (IRS Employer
     of Incorporation)              File Number)            Identification No.)


455 Pennsylvania Avenue, Suite 135, Ft. Washington, Pennsylvania         19034
- ----------------------------------------------------------------      ----------
          (Address of Principal Executive Offices)                    (Zip Code)


Registrant's telephone number, including area code  (215) 542-9250
                                                    --------------


- --------------------------------------------------------------------------------
        (Former Name or Former Address, if Changed Since Last Report)



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Item 7.  Financial Statements and Exhibits.

         (a)  Financial Statements of Businesses Acquired.

              None.

         (b)  Pro Forma Financial Information.

              None.

         (c)  Exhibits.

         1.1  Underwriting Agreement, dated December 17, 1997, among the
              Registrant, PREIT ASSOCIATES, L.P., and Lehman Brothers Inc.,
              Legg Mason Wood Walker, Incorporated, Merrill Lynch, Pierce,
              Fenner & Smith Incorporated, Smith Barney Inc. and Wheat First
              Securities, Inc. with respect to the issuance and sale of
              4,000,000 Shares of Beneficial Interest, par value $1.00 per
              share, of the Registrant (plus up to 600,000 additional Shares
              pursuant to a 30-day option granted to the underwriters solely to
              cover over-allotments) under Registration Statement on Form S-3
              (No. 33-61115).

         3.3  By-Laws of the Registrant as amended through December 16, 1997.

         5.1  Opinion of Drinker Biddle & Reath LLP with respect to Shares of
              Beneficial Interest, par value $1.00 per share, to be issued and
              sold by the Registrant under Registration Statement on Form S-3
              (No. 33-61115).


                                       -3-


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                                   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.


                                              PENNSYLVANIA REAL ESTATE
                                                INVESTMENT TRUST


Date:  December 22, 1997              
                                              /s/ Jeffrey A. Linn  
                                             ---------------------------------
                                              Jeffrey A. Linn
                                              Senior Vice President-Finance
                                                and Treasurer


                                       -4-


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                                  EXHIBIT INDEX

Exhibit
 Number                  Description                                      Page
 ------                  -----------                                      ----

1.1            Underwriting Agreement, dated December
               17, 1997, among the Registrant, PREIT
               ASSOCIATES, L.P., and Lehman Brothers
               Inc., Legg Mason Wood Walker,
               Incorporated, Merrill Lynch, Pierce,
               Fenner & Smith Incorporated, Smith Barney
               Inc. and Wheat First Securities, Inc.
               with respect to the issuance and sale of
               4,000,000 Shares of Beneficial Interest,
               par value $1.00 per share, of the
               Registrant (plus up to 600,000 additional
               Shares pursuant to a 30-day option
               granted to the underwriters solely to
               cover over-allotments) under Registration
               Statement on Form S-3 (No. 33-61115).

3.3            By-Laws of the Registrant as amended
               through December 16, 1997.

5.1            Opinion of Drinker Biddle & Reath LLP
               with respect to Shares of Beneficial
               Interest, par value $1.00 per share, to
               be issued and sold by the Registrant
               under Registration Statement on Form S-3
               (No. 33-61115).



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                                                                     EXHIBIT 1.1

                                    4,000,000

                    PENNSYLVANIA REAL ESTATE INVESTMENT TRUST

                          Shares of Beneficial Interest

                             UNDERWRITING AGREEMENT

                                                               December 17, 1997

LEHMAN BROTHERS INC.
LEGG MASON WOOD WALKER, INCORPORATED
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
SMITH BARNEY INC.
WHEAT, FIRST SECURITIES, INC.,
As Representatives of the several
  Underwriters named in Schedule 1,
c/o Lehman Brothers Inc.
Three World Financial Center
New York, New York 10285


Dear Sirs:

         Pennsylvania Real Estate Investment Trust, an unincorporated
association in business trust form created under Pennsylvania law pursuant to a
Trust Agreement (the "Trust"), proposes to sell 4,000,000 shares (the "Firm
Shares") of the Trust's Shares of Beneficial Interest, par value $1.00 per
share. In addition, the Trust proposes to grant to the Underwriters named in
Schedule 1 hereto (the "Underwriters") an option to purchase up to an additional
600,000 Shares of Beneficial Interest on the terms and for the purposes set
forth in Section 2 (the "Option Shares"). The Firm Shares and the Option Shares,
if purchased, are hereinafter collectively called the "Shares." This is to
confirm the agreement between the Trust, PREIT Associates, L.P. (the "Operating
Partnership") and the Underwriters named in Schedule 1 hereto (the
"Underwriters") concerning the purchase of the Shares from the Trust by the
Underwriters.

         1. Representations, Warranties and Agreements of the Trust and the
Operating Partnership. The Trust and the Operating Partnership, jointly and
severally, represent, warrant and agree that:

                  (a) A registration statement on Form S-3 with respect to the
         Shares has (i) been prepared by the Trust in conformity with the
         requirements of the United States Securities Act of 1933 (the
         "Securities Act") and the rules and regulations (the "Rule and
         Regulations") of the United States Securities and Exchange Commission
         (the "Commission") thereunder, (ii) been filed with the Commission
         under the Securities Act and (iii) become effective under the
         Securities Act.



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         Copies of such registration statement have been delivered by the Trust
         to you as the representatives (the "Representatives") of the
         Underwriters. As used in this Agreement, "Effective Time" means the
         date and the time as of which such registration statement, or the most
         recent post-effective amendment thereto, if any, was declared
         effective by the Commission; "Effective Date" means the date of the
         Effective Time; "Preliminary Prospectus" means each prospectus
         included in such registration statement, before it became effective
         under the Securities Act and any prospectus filed with the Commission
         by the Trust with the consent of the Representatives pursuant to Rule
         424(a) of the Rules and Regulations; "Registration Statement" means
         such registration statement, as amended at the Effective Time,
         including any documents incorporated by reference therein at such time
         and all information contained in the final prospectus filed with the
         Commission pursuant to Rule 424(b) of the Rules and Regulations in
         accordance with Section 3 hereof and "Prospectus" means such final
         prospectus, as first filed with the Commission pursuant to paragraph
         (1) or (4) or (5) of Rule 424(b) of the Rules and Regulations.
         Reference made herein to any Preliminary Prospectus or to the
         Prospectus shall be deemed to refer to and include any documents
         incorporated by reference therein pursuant to Item 12 of Form S-3
         under the Securities Act, as of the date of such Preliminary
         Prospectus or the Prospectus, as the case may be, and any reference to
         any amendment or supplement to any Preliminary Prospectus or the
         Prospectus shall be deemed to refer to and include any document filed
         under the United States Securities Exchange Act of 1934 (the "Exchange
         Act") after the date of such Preliminary Prospectus or the Prospectus,
         as the case may be, and incorporated by reference in such Preliminary
         Prospectus or the Prospectus, as the case may be; and any reference to
         any amendment to the Registration Statement shall be deemed to include
         any annual report of the Trust filed with the Commission pursuant to
         Section 13(a) or 15(d) of the Exchange Act after the Effective Time
         that is incorporated by reference in the Registration Statement. The
         Commission has not issued any order preventing or suspending the use
         of any Preliminary Prospectus.

                  (b) The Registration Statement conforms, and the Prospectus
         and any further amendments or supplements to the Registration Statement
         or the Prospectus will, when they become effective or are filed with
         the Commission, as the case may be, conform in all respects to the
         requirements of the Securities Act and the Rules and Regulations and do
         not and will not, as of the applicable effective date (as to the
         Registration Statement and any amendment thereto) and as of the
         applicable filing date (as to the Prospectus and any amendment or
         supplement thereto) contain an untrue statement of a material fact or
         omit to state a material fact required to be stated therein or
         necessary to make the statements therein not misleading; provided that
         no representation or warranty is made as to information contained in or
         omitted from the Registration Statement or the Prospectus in reliance
         upon and in conformity with written information furnished

                                      - 2 -




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         to the Trust through the Representatives by or on behalf of
         any Underwriter specifically for inclusion therein .

                  (c) The documents incorporated by reference in the Prospectus,
         when they became effective or were filed with the Commission, as the
         case may be, as amended through the date hereof, conformed in all
         material respects to the requirements of the Securities Act and the
         rules and regulations of the Commission thereunder, and none of such
         documents contained an untrue statement of a material fact or omitted
         to state a material fact required to be stated therein or necessary to
         make the statements therein not misleading; and any further documents
         so filed and incorporated by reference in the Prospectus, when such
         documents become effective or are filed with Commission, as the case
         may be, will conform in all material respects to the requirements of
         the Securities Act, or the Exchange Act, as applicable, and the rules
         and regulations of the Commission thereunder and will not contain an
         untrue statement of a material fact or omit to state a material fact
         required to be stated therein or necessary to make the statements
         therein not misleading.

                  (d) The Trust, the Operating Partnership and each of their
         subsidiaries (as defined in Section 15) have been duly formed and are
         validly existing as unincorporated business associations, limited
         partnerships or corporations, as the case may be, in good standing
         under the laws of their respective jurisdictions of formation, are duly
         qualified to do business and are in good standing as foreign
         unincorporated business associations, limited partnerships or
         corporations, as the case may be, in each jurisdiction in which their
         respective ownership or lease of property or the conduct of their
         respective businesses requires such qualification, and have all power
         and authority necessary to own or hold their respective properties and
         to conduct the businesses in which they are engaged; and none of the
         subsidiaries of the Trust (other than the Operating Partnership) is a
         "significant subsidiary," as such term is defined in Rule 405 of the
         Rules and Regulations.

                  (e) The Trust has an authorized capitalization as set forth in
         the Prospectus, and all of the issued shares of beneficial interest of
         the Trust have been duly and validly authorized and issued, are fully
         paid and non-assessable and conform to the description thereof
         contained in the Prospectus;

                  (f) All of the issued shares of beneficial interest,
         partnership interests and shares of capital stock, as the case may be,
         of each subsidiary of the Trust have been duly and validly authorized
         and issued and are fully paid and non-assessable and (except for
         directors' qualifying shares and except as set forth in the Prospectus)
         are owned directly or indirectly by the Trust, free and clear of all
         liens, encumbrances, equities or claims.

                                      - 3 -




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                  (g) The unissued Shares to be issued and sold by the Trust to
         the Underwriters hereunder have been duly and validly authorized and,
         when issued and delivered against payment therefor as provided herein,
         will be duly and validly issued, fully paid and non-assessable; and the
         Shares will conform to the description thereof contained in the
         Prospectus.

                  (h) This Agreement has been duly authorized, executed and
         delivered by the Trust and the Operating Partnership.

                  (i) The execution, delivery and performance of this Agreement
         by the Trust and the Operating Partnership and the consummation of the
         transactions contemplated hereby will not conflict with or result in a
         breach or violation of any of the terms or provisions of, or constitute
         a default under, any indenture, mortgage, deed of trust, loan agreement
         or other agreement or instrument to which the Trust, the Operating
         Partnership or any of their subsidiaries is a party or by which the
         Trust, the Operating Partnership or any of their subsidiaries is bound
         or to which any of the property or assets of the Trust, the Operating
         Partnership or any of their subsidiaries is subject, nor will such
         actions result in any violation of the provisions of the trust
         agreement, charter, bylaws or limited partnership agreement of the
         Trust, the Operating Partnership or any of their subsidiaries or any
         statute or any order, rule or regulation of any court or governmental
         agency or body having jurisdiction over the Trust, the Operating
         Partnership or any of their subsidiaries or any of their properties or
         assets; and except for the registration of the Shares under the
         Securities Act and such consents, approvals, authorizations,
         registrations or qualifications as may be required under the Exchange
         Act and applicable state securities laws in connection with the
         purchase and distribution of the Shares by the Underwriters, no
         consent, approval, authorization or order of, or filing or registration
         with, any such court or governmental agency or body is required for the
         execution, delivery and performance of this Agreement by the Trust and
         the Operating Partnership and the consummation of the transactions
         contemplated hereby.

                  (j) Except as disclosed in the Prospectus, there are no
         contracts, agreements or understandings between the Trust and any
         person granting such person the right, other than rights which have
         been waived or satisfied, to require the Trust to file a registration
         statement under the Securities Act with respect to any securities of
         the Trust owned or to be owned by such person or to require the Trust
         to include such securities in the securities registered pursuant to the
         Registration Statement or in any securities being registered pursuant
         to any other registration statement filed by the Trust under the
         Securities Act.

                  (k) Except as described in the Prospectus, the Trust has not
         sold or issued any Shares during the six-month period preceding the
         date of the Prospectus,

                                      - 4 -




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         including any sales pursuant to Rule 144A under, or Regulations D or S
         of, the Securities Act, other than shares issued pursuant to employee
         benefit plans, qualified or non-qualified share options plans for
         officers, employees, or trustees or other employee compensation plans
         or pursuant to outstanding options, rights or warrants.

                  (l) Neither the Trust, the Operating Partnership nor any of
         their subsidiaries has sustained, since the date of the latest audited
         financial statements included or incorporated by reference in the
         Prospectus, any material loss or interference with its business from
         fire, explosion, flood or other calamity, whether or not covered by
         insurance, or from any labor dispute or court or governmental action,
         order or decree, otherwise than as set forth or contemplated in the
         Prospectus; and, since such date, there has not been any change in the
         equity or long-term debt of the Trust, the Operating Partnership or any
         of their subsidiaries or any material adverse change, or any
         development involving a prospective material adverse change, in or
         affecting the general affairs, management, financial position,
         shareholders' equity or results of operations of the Trust, the
         Operating Partnership and their subsidiaries, otherwise than as set
         forth or contemplated in the Prospectus.

                  (m) The financial statements and pro forma financial
         information (including all necessary pro forma adjustments and
         including the related notes and supporting schedules) filed as part of
         the Registration Statement or included or incorporated by reference in
         the Prospectus present fairly the financial condition and results of
         operations of the entities purported to be shown thereby, at the dates
         and for the periods indicated, and have been prepared in conformity
         with generally accepted accounting principles applied on a consistent
         basis throughout the periods involved, and all adjustments necessary
         for a fair presentation of results for such periods have been made. The
         pro forma financial statements and related information included in the
         Prospectus have been prepared in accordance with the applicable
         requirements of Rules 11-01 and 11-02 of Regulation S-X under the
         Securities Act, and the necessary pro forma adjustments have been
         properly applied to the historical amounts in the compilation of such
         information. Other than the historical and pro forma financial
         statements (and schedules) included therein, no other historical or pro
         forma financial statements (or schedules) are required by the
         Securities Act or the Rules and Regulations to be included in the
         Registration Statement.

                  (n) Arthur Anderson, L.L.P., who have certified certain
         financial statements included or incorporated reference in the
         Prospectus, whose reports appear in the Prospectus or are incorporated
         by reference therein and who have delivered the initial letter referred
         to in Section 7(f) hereof, are independent public accountants as
         required by the Securities Act and the Rules and

                                      - 5 -




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         Regulations; and, in regard to the financial statements of Lehigh
         Valley Associates, Ernst & Young L.L.P., whose report appears in the
         Prospectus or is incorporated by reference therein, were independent
         accountants as required by the Securities Act and the Rules and
         Regulations during the periods covered by the financial statements on
         which they reported contained or incorporated in the Prospectus.

                  (o) (i) The Trust, the Operating Partnership and each of their
         subsidiaries, have good and marketable title in fee simple to all real
         property and own all personal property in each case owned by them, in
         each case free and clear of all liens, encumbrances and defects except
         such as are described in the Prospectus or such as do not materially
         affect the value of such property and do not materially interfere with
         the use made and proposed to be made of such property by the Trust, the
         Operating Partnership and their subsidiaries; and (ii) all real
         property, buildings and personal property held under lease by the
         Trust, the Operating Partnership and their subsidiaries are held by
         them under valid, existing and enforceable leases in each case free and
         clear of all liens, encumbrances and defects with such exceptions as
         are not material and do not materially interfere with the use made and
         proposed to be made of such property and buildings by the Trust, the
         Operating Partnership and their subsidiaries.

                  (p) Except as described in the Prospectus, the Trust, the
         Operating Partnership and each of their subsidiaries carry, or are
         covered by, insurance (including title insurance) in such amounts and
         covering such risks as is adequate for the conduct of their respective
         businesses and the value of their respective properties and as is
         customary for organizations engaged in similar businesses in similar
         industries.

                  (q) The Trust, the Operating Partnership and each of their
         subsidiaries own or possess adequate rights to use all trademarks,
         service marks, trade names, trademark registrations, service mark
         registrations, copyrights and licenses necessary for the conduct of
         their respective businesses and have no reason to believe that the
         conduct of their respective businesses will conflict with, and have not
         received any notice of any claim of conflict with, any such rights of
         others.


                  (r) There are no legal or governmental proceedings pending to
         which the Trust, the Operating Partnership or any of their subsidiaries
         is a party or of which any property or assets of the Trust, the
         Operating Partnership or any of their subsidiaries is the subject
         which, if determined adversely to any of them might have a material
         adverse effect on the consolidated financial position, shareholders'
         equity, results of operations, business or prospects of the Trust, the
         Operating Partnership and their subsidiaries ("Material Adverse
         Effect"); and to the best

                                      - 6 -




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         of the Trust's knowledge, no such proceedings are threatened or
         contemplated by governmental authorities or threatened by others.

                  (s) The conditions for use of Form S-3, as set forth in the
         General Instructions thereto, have been satisfied.

                  (t) There are no contracts or other documents which are
         required to be described in the Prospectus or filed as exhibits to the
         Registration Statement by the Securities Act or by the Rules and
         Regulations which have not been described in the Prospectus or filed as
         exhibits to the Registration Statement or incorporated therein by
         reference as permitted by the Rules and Regulations.

                  (u) No relationship, direct or indirect, exists between or
         among the Trust or the Operating Partnership on the one hand, and the
         trustees, officers, shareholders (in the case of the Trust), limited
         partners (in the case of the Operating Partnership), customers or
         suppliers of the Trust or the Operating Partnership on the other hand,
         which is required to be described in the Prospectus which is not so
         described.

                  (v) No labor disturbance by the employees of the Trust, the
         Operating Partnership or their subsidiaries exists or, to the knowledge
         of the Trust, is imminent, which might be expected to have a Material
         Adverse Effect.

                  (w) The Trust, the Operating Partnership and their
         subsidiaries are in compliance in all material respects with all
         presently applicable provisions of the Employee Retirement Income
         Security Act of 1974, as amended, including the regulations and
         published interpretations thereunder ("ERISA"); no "reportable event"
         (as defined in ERISA) has occurred with respect to any "pension plan"
         (as defined in ERISA) for which the Trust or the Operating Partnership
         would have any liability; the Trust or the Operating Partnership have
         not incurred and does not expect to incur liability under (i) Title IV
         of ERISA with respect to termination of, or withdrawal from, any
         "pension plan" or (ii) Sections 412 or 4971 of the Internal Revenue
         Code of 1986, as amended, including the regulations and published
         interpretations thereunder (the "Code"); and each "pension plan" for
         which the Trust or the Operating Partnership would have any liability
         that is intended to be qualified under Section 401(a) of the Code is so
         qualified in all material respects and nothing has occurred, whether by
         action or by failure to act, which would cause the loss of such
         qualification.

                  (x) The Trust, the Operating Partnership and their
         subsidiaries have filed all federal, state and local income and
         franchise tax returns required to be filed through the date hereof and
         have paid all taxes due thereon (except for taxes being contested in
         good faith), and no tax deficiency has been determined

                                      - 7 -




<PAGE>

         adversely to the Trust, the Operating Partnership or any of their
         subsidiaries which has had nor does the Trust have any knowledge of
         any tax deficiency which, if determined adversely to the Trust, the
         Operating Partnership or any of their subsidiaries, might have a
         Material Adverse Effect.

                  (y) Since the date as of which information is given in the
         Prospectus through the date hereof, and except as may otherwise be
         disclosed in the Prospectus, the Trust and the Operating Partnership
         have not (i) issued or granted any securities, (ii) incurred any
         liability or obligation, direct or contingent, other than liabilities
         and obligations which were incurred in the ordinary course of business,
         (iii) entered into any transaction not in the ordinary course of
         business or (iv) declared or paid any distribution on their beneficial
         shares or partnership interests.

                  (z) The Trust, the Operating Partnership and their
         subsidiaries (i) make and keep accurate books and records and (ii)
         maintain internal accounting controls which provide reasonable
         assurance that (A) transactions are executed in accordance with
         management's authorization, (B) transactions are recorded as necessary
         to permit preparation of their financial statements and to maintain
         accountability for their assets, (C) access to their assets is
         permitted only in accordance with management's authorization and (D)
         the reported accountability for their assets is compared with existing
         assets at reasonable intervals.

                  (aa) Neither the Trust, the Operating Partnership nor any of
         their subsidiaries (i) is in violation of its trust agreement, charter,
         limited partnership agreement or bylaws, (ii) is in default in any
         respect, and no event has occurred which, with notice or lapse of time
         or both, would constitute such a default, in the due performance or
         observance of any term, covenant or condition contained in any material
         indenture, mortgage, deed of trust, loan agreement or other agreement
         or instrument to which it is a party or by which it is bound or to
         which any of its properties or assets is subject or (iii) is in
         violation in any respect of any law, ordinance, governmental rule,
         regulation or court decree to which it or its property or assets may be
         subject or has failed to obtain any material license, permit,
         certificate, franchise or other governmental authorization or permit
         necessary to the ownership of their property or to the conduct of their
         business, except in the cases of clauses (ii) and (iii) for such
         matters as would not, individually or in the aggregate, have a Material
         Adverse Effect.

                  (ab) Neither the Trust, the Operating Partnership, any of
         their subsidiaries, nor any trustee, director, officer, agent, employee
         or other person associated with or acting on behalf of them has used
         any trust, corporate, or partnership funds for any unlawful
         contribution, gift, entertainment or other unlawful expense relating to
         political activity; made any direct or indirect

                                      - 8 -




<PAGE>

         unlawful payment to any foreign or domestic government official or
         employee from trust, corporate, or partnership funds; violated or is
         in violation of any provision of the Foreign Corrupt Practices Act of
         1977; or made any bribe, rebate, payoff, influence payment, kickback
         or other unlawful payment.

                  (aa) Except as disclosed in the Prospectus, there has been no
         storage, disposal, generation, manufacture, refinement, transportation,
         handling or treatment of toxic wastes, medical wastes, hazardous wastes
         or hazardous substances by the Trust, the Operating Partnership or any
         of their subsidiaries (or, to the knowledge of the Trust, any of their
         predecessors in interest or any other person) at, upon or from any of
         the property now or previously owned or leased by the Trust, the
         Operating Partnership or any of their subsidiaries in violation of any
         applicable law, ordinance, rule, regulation, order, judgment, decree or
         permit or which would require any removal, remedial or other response
         action under any applicable law, ordinance, rule, regulation, order,
         judgment, decree or permit, except for any violation or response action
         which would not have singularly or in the aggregate with all such
         violations and response actions, a Material Adverse Effect; there also
         has been no storage, disposal, generation, manufacture, refinement,
         transportation, handling or treatment of toxic wastes, medical wastes,
         hazardous wastes or hazardous substances by the Trust, the Operating
         Partnership or any of their subsidiaries (or, to the knowledge of the
         Trust, any of their predecessors in interest) at or upon any property
         owned by anyone else in violation of any applicable law, ordinance,
         rule, regulation, order, judgment, decree or permit or which would
         require any removal, remedial or other response action under any
         applicable law, ordinance, rule, regulation, order, judgment, decree or
         permit, except for any violation or response action which would not
         have singularly or in the aggregate with all such violations and
         response actions, a Material Adverse Effect; there has been no material
         spill, discharge, leak, emission, injection, escape, placement, dumping
         or release of any kind onto such property or into the environment
         surrounding such property of any toxic wastes, medical wastes, solid
         wastes, hazardous wastes or hazardous substances due to or caused by
         the Trust, the Operating Partnership or any of their subsidiaries or
         with respect to which the Trust, the Operating Partnership or any of
         their subsidiaries have knowledge, except for any such spill,
         discharge, leak, emission, injection, escape, placement, dumping or
         release which would not have singularly or in the aggregate with all
         such spills, discharges, leaks, emissions, injections, escapes,
         placements, dumpings and releases, a Material Adverse Effect; and the
         terms "hazardous wastes," "toxic wastes," "hazardous substances" and
         "medical wastes" shall have the meanings specified in any applicable
         local, state, federal and foreign laws or regulations with respect to
         environmental protection. There are no underground storage tanks
         located on or in any of the Trusts' properties except such tanks the
         existence of which would not have a Material Adverse Effect.

                                      - 9 -




<PAGE>


                  (ad) Neither the Trust, the Operating Partnership nor any
         subsidiary is an "investment company" within the meaning of such term
         under the Investment Company Act of 1940 and the rules and regulations
         of the Commission thereunder.

                  (ae) Except as described in the Prospectus, the Operating
         Partnership is not currently prohibited, directly or indirectly, from
         paying any distributions to the Trust to the extent permitted by
         applicable law, from making any other distribution on the Operating
         Partnership's partnership interest, from repaying to the Trust any
         loans or advances to the Operating Partnership from the Trust or from
         transferring any of the Operating Partnership's property or assets to
         the Trust.

                  (af) The Trust is organized in conformity with the
         requirements for qualification as a real estate investment trust under
         the Internal Revenue Code of 1986, as amended (the "Code"), has
         qualified as a REIT for each taxable year since its formation, and its
         proposed method of operation will enable it to continue to meet the
         requirements for taxation as a REIT under the Code. All statements in
         the Prospectus regarding the Trust's qualification as a REIT are true,
         complete and correct in all material respects.

                  2. Purchase of the Shares by the Underwriters. On the basis of
the representations and warranties contained in, and subject to the terms and
conditions of, this Agreement, the Trust agrees to sell 4,000,000 Firm Shares to
the several Underwriters and each of the Underwriters, severally and not
jointly, agrees to purchase the number of shares of the Firm Shares set opposite
that Underwriter's name in Schedule 1 hereto. The respective purchase
obligations of the Underwriters with respect to the Firm Shares shall be rounded
among the Underwriters to avoid fractional shares, as the Representatives may
determine.

                  In addition, the Trust grants to the Underwriters an option to
purchase up to 600,000 Option Shares. Such option is granted solely for the
purpose of covering over-allotments in the sale of Firm Shares and is
exercisable as provided in Section 4 hereof. Option Shares shall be purchased
severally for the account of the Underwriters in proportion to the number of
Firm Shares set opposite the name of such Underwriters in Schedule 1 hereto. The
respective purchase obligations of each Underwriter with respect to the Option
Shares shall be adjusted by the Representatives so that no Underwriter shall be
obligated to purchase Option Shares other than in 100 share amounts. The price
of both the Firm Shares and any Option Shares shall be $21.035 per share.

                  The Trust shall not be obligated to deliver any of the Shares
to be delivered on the First Delivery Date or the Second Delivery Date (as
hereinafter defined), as the case may be, except upon payment for all the Shares
to be purchased on such Delivery Date as provided herein.

                                     - 10 -




<PAGE>



                  3. Offering of Shares by the Underwriters.

                  Upon authorization by the Representatives of the release of
the Firm Shares, the several Underwriters propose to offer the Firm Shares for
sale upon the terms and conditions set forth in the Prospectus.

                  4. Delivery of and Payment for the Shares. Delivery of and
payment for the Firm Shares shall be made at the office of Hogan & Hartson
L.L.P., Columbia Square, 555 Thirteenth Street, N.W., Washington, D.C. 20004, at
10:00 A.M., New York City time, on the fourth full business day following the
date of this Agreement or at such other date or place as shall be determined by
agreement between the Representatives and the Trust. This date and time are
sometimes referred to as the "First Delivery Date." On the First Delivery Date,
the Trust shall deliver or cause to be delivered certificates representing the
Firm Shares to the Representatives for the account of each Underwriter against
payment to or upon the order of the Trust of the purchase price in immediately
available funds. Time shall be of the essence, and delivery at the time and
place specified pursuant to this Agreement is a further condition of the
obligation of each Underwriter hereunder. Upon delivery, the Firm Shares shall
be registered in such names and in such denominations as the Representatives
shall request in writing not less than two full business days prior to the First
Delivery Date. For the purpose of expediting the checking and packaging of the
certificates for the Firm Shares, the Trust shall make the certificates
representing the Firm Shares available for inspection by the Representatives in
New York, New York, not later than 2:00 P.M., New York City time, on the
business day prior to the First Delivery Date.

                  At any time on or before the thirtieth day after the date of
this Agreement the option granted in Section 2 may be exercised by written
notice being given to the Trust by the Representatives. Such notice shall set
forth the aggregate number of Option Shares as to which the option is being
exercised, the names in which the Option Shares are to be registered, the
denominations in which the Option Shares are to be issued and the date and time,
as determined by the Representatives, when the Option Shares are to be
delivered; provided, however, that this date and time shall not be earlier than
the First Delivery Date nor earlier than the second business day after the date
on which the option shall have been exercised nor later than the fifth business
day after the date on which the option shall have been exercised. The date and
time the Option Shares are delivered are sometimes referred to as the "Second
Delivery Date" and the First Delivery Date and the Second Delivery Date are
sometimes each referred to as a "Delivery Date."

                  Delivery of and payment for the Option Shares shall be made at
the place specified in the first sentence of the first paragraph of this Section
4 (or at such other place as shall be determined by agreement between the
Representatives and the Trust) at 10:00 A.M., New York City time, on the Second
Delivery Date. On the Second Delivery Date, the Trust shall deliver or cause to
be delivered the certificates representing the Option Shares to the
Representatives for the account of each Underwriter against payment to or upon
the order of the

                                     - 11 -




<PAGE>

Trust of the purchase price in immediately available funds. Time shall be of the
essence, and delivery at the time and place specified pursuant to this Agreement
is a further condition of the obligation of each Underwriter hereunder. Upon
delivery, the Option Shares shall be registered in such names and in such
denominations as the Representatives shall request in the aforesaid written
notice. For the purpose of expediting the checking and packaging of the
certificates for the Option Shares, the Trust shall make the certificates
representing the Option Shares available for inspection by the Representatives
in New York, New York, not later than 2:00 P.M., New York City time, on the
business day prior to the Second Delivery Date.

                  5. Further Agreements of the Trust and the Operating
Partnership. The Trust and the Operating Partnership agree:

                           (a) To prepare the Prospectus in a form approved by
                  the Representatives and to file such Prospectus pursuant to
                  Rule 424(b) under the Securities Act not later than
                  Commission's close of business on the second business day
                  following the execution and delivery of this Agreement or, if
                  applicable, such earlier time as may be required by Rule
                  430A(a)(3) under the Securities Act; to make no further
                  amendment or any supplement to the Registration Statement or
                  to the Prospectus prior to the last Delivery Date except as
                  permitted herein; to advise the Representatives, promptly
                  after it receives notice thereof, of the time when any
                  amendment to the Registration Statement has been filed or
                  becomes effective or any supplement to the Prospectus or any
                  amended Prospectus has been filed and to furnish the
                  Representatives with copies thereof; to file promptly all
                  reports and any definitive proxy or information statements
                  required to be filed by the Trust with the Commission pursuant
                  to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act
                  subsequent to the date of the Prospectus and for so long as
                  the delivery of a prospectus is required in connection with
                  the offering or sale of the Shares, to advise the
                  Representatives, promptly after it receives notice thereof, of
                  the issuance by the Commission of any stop order or of any
                  order preventing or suspending the use of any Preliminary
                  Prospectus or the Prospectus, of the suspension of the
                  qualification of the Shares for offering or sale in any
                  jurisdiction, of the initiation or threatening of any
                  proceeding for any such purpose, or of any request by the
                  Commission for the amending or supplementing of the
                  Registration Statement or the Prospectus or for additional
                  information; and, in the event of the issuance of any stop
                  order or of any order preventing or suspending the use of any
                  Preliminary Prospectus or the Prospectus or suspending any
                  such qualification, to use promptly its best efforts to obtain
                  its withdrawal;

                           (b) To furnish promptly to the Representatives and to
                  counsel for the Underwriters a signed copy of the Registration
                  Statement as originally filed with the Commission, and each
                  amendment thereto filed with the Commission, including all
                  consents and exhibits filed therewith;


                                     - 12 -




<PAGE>

                           (c) To deliver promptly to the Representatives such
                  number of the following documents as the Representatives shall
                  reasonably request: (i) conformed copies of the Registration
                  Statement as originally filed with the Commission and each
                  amendment thereto (in each case excluding exhibits other than
                  this Agreement and the computation of per share earnings) and,
                  (ii) each Preliminary Prospectus, the Prospectus and any
                  amended or supplemented Prospectus and (iii) any document
                  incorporated by reference in the Prospectus (excluding
                  exhibits thereto); and, if the delivery of a prospectus is
                  required at any time after the Effective Time in connection
                  with the offering or sale of the Shares or any other
                  securities relating thereto and if at such time any events
                  shall have occurred as a result of which the Prospectus as
                  then amended or supplemented would include an untrue statement
                  of a material fact or omit to state any material fact
                  necessary in order to make the statements therein, in the
                  light of the circumstances under which they were made when
                  such Prospectus is delivered, not misleading, or, if for any
                  other reason it shall be necessary to amend or supplement the
                  Prospectus or to file under the Exchange Act any document
                  incorporated by reference in the Prospectus in order to comply
                  with the Securities Act or the Exchange Act, to notify the
                  Representatives and, upon its request, to file such document
                  and to prepare and furnish without charge to each Underwriter
                  and to any dealer in securities as many copies as the
                  Representatives may from time to time reasonably request of an
                  amended or supplemented Prospectus which will correct such
                  statement or omission or effect such compliance.

                           (d) To file promptly with the Commission any
                  amendment to the Registration Statement or the Prospectus or
                  any supplement to the Prospectus that may, in the reasonable
                  judgment of the Trust or the Representatives, be required by
                  the Securities Act or requested by the Commission;

                           (e) Prior to filing with the Commission any amendment
                  to the Registration Statement or supplement to the Prospectus,
                  any document incorporated by reference in the Prospectus or
                  any Prospectus pursuant to Rule 424 of the Rules and
                  Regulations, to furnish a copy thereof to the Representatives
                  and counsel for the Underwriters and afford them a reasonable
                  opportunity to comment on any such filing prior to the filing
                  thereof;

                           (f) For a period of five years following the
                  Effective Date, to furnish to the Representatives copies of
                  all materials furnished by the Trust to its shareholders and
                  all public reports and all reports and financial statements
                  furnished by the Trust to the principal national securities
                  exchange upon which the Shares may be listed pursuant to
                  requirements of or agreements with such exchange or to the
                  Commission pursuant to the Exchange Act or any rule or
                  regulation of the Commission thereunder;


                                     - 13 -




<PAGE>

                           (g) Promptly from time to time to take such action as
                  the Representatives may reasonably request to qualify the
                  Shares for offering and sale under the securities laws of such
                  jurisdictions as the Representatives may request and to comply
                  with such laws so as to permit the continuance of sales and
                  dealings therein in such jurisdictions for as long as may be
                  necessary to complete the distribution of the Shares,
                  provided, that no foreign qualification of the Trust in any
                  jurisdiction be required in connection therewith;

                           (h) For a period of 90 days from the date of the
                  Prospectus, not to, directly or indirectly, (1) offer for
                  sale, sell, pledge or otherwise dispose of (or enter into any
                  transaction or device which is designed to, or could be
                  expected to, result in the disposition by any person at any
                  time in the future of) any shares of beneficial interest or
                  securities convertible into or exchangeable for shares of
                  beneficial interest (other than the shares issued upon
                  conversion of currently outstanding OP Units and shares issued
                  pursuant to employee benefit plans, qualified stock option
                  plans or other employee compensation plans existing on the
                  date hereof or pursuant to currently outstanding options,
                  warrants or rights or as a stock bonus not to exceed 2000
                  shares in the aggregate), or sell or grant options, rights or
                  warrants with respect to shares of beneficial interest or
                  securities convertible into or exchangeable for shares of
                  beneficial interest (other than the grant of options pursuant
                  to option plans existing on the date hereof and the issuance
                  by the Operating Partnership of OP Units in connection with
                  property acquisitions, provided, that such OP Units are not
                  redeemable prior to 90 days from the date of the Prospectus,
                  or (2) enter into any swap or other derivatives transaction
                  that transfers to another, in whole or in part, any of the
                  economic benefits or risks of ownership of such shares of
                  beneficial interest, whether any such transaction described in
                  clause (1) or (2) above is to be settled by delivery of shares
                  of beneficial interest or other securities, in cash or
                  otherwise, in each case without the prior written consent of
                  Lehman Brothers Inc.; and to cause the holder(s) of the
                  currently outstanding Class B OP Units of the Operating
                  Partnership and each officer and trustee of the Company to
                  furnish to the Representatives, prior to the First Delivery
                  Date, a letter or letters, in form and substance satisfactory
                  to counsel for the Underwriters, pursuant to which each such
                  person shall agree not to, directly or indirectly, (1) offer
                  for sale, sell, pledge or otherwise dispose of (or enter into
                  any transaction or device which is designed to, or could be
                  expected to, result in the disposition by any person at any
                  time in the future of) any shares of beneficial interest or
                  securities convertible into or exchangeable for shares of
                  beneficial interest or (2) enter into any swap or other
                  derivatives transaction that transfers to another, in whole or
                  in part, any of the economic benefits or risks of ownership of
                  such shares of beneficial interest, whether any such
                  transaction described in clause (1) or (2) above is to be
                  settled by delivery of beneficial interest or other
                  securities, in cash or

                                     - 14 -




<PAGE>

                  otherwise, in each case for a period of 90 days from the date
                  of the Prospectus, without the prior written consent of Lehman
                  Brothers Inc.;

                           (i) Prior to the Effective Date, to apply for the
                  listing of the Shares on the New York Share Exchange, and to
                  use its best efforts to complete that listing, subject only to
                  official notice of issuance and evidence of satisfactory
                  distribution, prior to the First Delivery Date;

                           (j) To apply the net proceeds from the sale of the
                  Shares being sold by the Trust as set forth in the Prospectus;

                           (k) To take such steps as shall be necessary to
                  ensure that neither the Trust, the Operating Partnership nor
                  any subsidiary shall become an "investment company" within the
                  meaning of such term under the Investment Company Act of 1940
                  and the rules and regulations of the Commission thereunder.

                  6. Expenses. The Trust agrees to pay (a) the costs incident to
the authorization, issuance, sale and delivery of the Shares and any taxes
payable in that connection; (b) the costs incident to the preparation, printing
and filing under the Securities Act of the Registration Statement and any
amendments and exhibits thereto; (c) the costs of distributing the Registration
Statement as originally filed and each amendment thereto and any post-effective
amendments thereof (including, in each case, exhibits), any Preliminary
Prospectus, the Prospectus and any amendment or supplement to the Prospectus or
any document incorporated by reference therein, all as provided in this
Agreement; (d) any applicable listing or other fees; (e) the fees and expenses
of qualifying the Shares under the securities laws of the several jurisdictions
as provided in Section 6 (j) and of preparing, printing and distributing a Blue
Sky Memorandum (including related fees and expenses of counsel to the
Underwriters); under this Agreement; provided that, except as provided in this
Section 6 and in Section 11 the Underwriters shall pay their own costs and
expenses, including the costs and expenses of their counsel, any transfer taxes
on the Shares which they may sell and the expenses of advertising any offering
of the Shares made by the Underwriters

                  7. Conditions of Underwriters' Obligations. The respective
obligations of the Underwriters hereunder are subject to the accuracy, when made
and on each Delivery Date, of the representations and warranties of the Trust
and the Operating Partnership contained herein, to the performance by the Trust
of its obligations hereunder, and to each of the following additional terms and
conditions:

                           (a) The Prospectus shall have been timely filed with
                  the Commission in accordance with Section 5(a); no stop order
                  suspending the effectiveness of the Registration Statement or
                  any part thereof shall have been issued and no proceeding for
                  that purpose shall have been initiated or threatened by the
                  Commission; and any request of the Commission for inclusion of
                  additional

                                     - 15 -




<PAGE>

                  information in the Registration Statement or the Prospectus or
                  otherwise shall have been complied with.

                           (b) No Underwriter shall have discovered and
                  disclosed to the Trust on or prior to such Delivery Date that
                  the Registration Statement or the Prospectus or any amendment
                  or supplement thereto contains an untrue statement of a fact
                  which, in the opinion of Hogan & Hartson L.L.P., counsel for
                  the Underwriters, is material or omits to state a fact which,
                  in the opinion of such counsel, is material and is required to
                  be stated therein or is necessary to make the statements
                  therein not misleading.

                           (c) All corporate proceedings and other legal matters
                  incident to the authorization, form and validity of this
                  Agreement, the Shares, the Registration Statement and the
                  Prospectus, and all other legal matters relating to this
                  Agreement and the transactions contemplated hereby shall be
                  reasonably satisfactory in all material respects to counsel
                  for the Underwriters, and the Trust shall have furnished to
                  such counsel all documents and information that they may
                  reasonably request to enable them to pass upon such matters.

                           (d) Drinker Biddle & Reath L.L.P. shall have
                  furnished to the Representatives its written opinion, as
                  counsel to the Trust and the Operating Partnership, addressed
                  to the Underwriters and dated such Delivery Date, in form and
                  substance reasonably satisfactory to the Representatives, to
                  the effect that:

                                    (i) The Trust and the Operating Partnership
                           have been duly organized, and each of their
                           subsidiaries have been organized, and all of the
                           foregoing are validly existing organizations in good
                           standing under the laws of their respective
                           jurisdictions, are duly qualified to do business and
                           are in good standing in each jurisdiction listed on a
                           Schedule to the opinion and have all power and
                           authority necessary to own or hold their respective
                           properties and conduct the businesses in which they
                           are engaged;

                                   (ii) The Trust has an authorized
                           capitalization as set forth in the Prospectus under
                           the caption "Capitalization," and all of the issued
                           shares of beneficial interest of the Trust (including
                           the Shares being delivered on such Delivery Date)
                           have been duly and validly authorized and issued, are
                           fully paid and non-assessable and conform in all
                           material respects, to the description thereof
                           contained in the Prospectus; and all of the equity
                           interests in the Operating Partnership and each
                           subsidiary have been duly and validly authorized,
                           assuming receipt of consideration therefor as
                           provided in the resolutions authorizing issuance
                           thereof of the board of directors of the Trust, as
                           general partner of the Operating Partnership, or

                                     - 16 -




<PAGE>

                           by the board of directors of such subsidiary, are
                           fully paid and (except as set forth in the
                           Prospectus) are owned of record by the Trust, the
                           Operating Partnership or another subsidiary; and to
                           the knowledge of such counsel, are owned free and
                           clear of all liens, encumbrances, equities or claims;

                                  (iii) There are no preemptive or other rights
                           to subscribe for or to purchase, nor any restriction
                           upon the voting or transfer of, any of the Trust's
                           shares of beneficial interest pursuant to the Trust's
                           Trust Agreement or bylaws or any agreement or other
                           instrument known to such counsel; nor are there any
                           restrictions upon the voting or transfer of, any
                           limited partnership interests ("Units") beneficially
                           owned by the Trust pursuant to the Operating
                           Partnership Agreement of Limited Partnership or, to
                           the knowledge of such counsel, any other agreement or
                           instrument to which the Operating Partnership is a
                           party, except those arising under the securities
                           laws;

                                   (iv) To the knowledge of such counsel and
                           other than as set forth in the Prospectus, there are
                           no legal or governmental proceedings pending to which
                           the Trust, the Operating Partnership or any of their
                           subsidiaries is a party or of which any property or
                           assets of them is the subject which, if determined
                           adversely to the Trust, the Operating Partnership or
                           any of their subsidiaries, could reasonably be
                           expected to have a Material Adverse Effect; and, to
                           the knowledge of such counsel, no such proceedings
                           are threatened or contemplated by governmental
                           authorities or threatened by others which, if
                           commenced, could reasonably be expected to leave a
                           Material Adverse Effect;

                                    (v) The Registration Statement was declared
                           effective under the Securities Act as of the date and
                           time specified in such opinion, the Prospectus was
                           filed with the Commission pursuant to the
                           subparagraph of Rule 424(b) of the Rules and
                           Regulations specified in such opinion on the date
                           specified therein and, to the knowledge of such
                           counsel, no stop order suspending the effectiveness
                           of the Registration Statement has been issued and no
                           proceeding for that purpose is pending or threatened
                           by the Commission;

                                   (vi) The Registration Statement and the
                           Prospectus and any further amendments or supplements
                           thereto made by the Trust prior to such Delivery Date
                           (other than the financial statements and related
                           schedules and numerical and statistical data therein,
                           as to which such counsel need express no opinion)
                           comply as to form in all material respects with the
                           requirements of the Securities Act and the Rules and

                                     - 17 -




<PAGE>

                           Regulations; and the documents incorporated by
                           reference in the Prospectus and any further amendment
                           or supplement to any such incorporated document made
                           by the Trust prior to such Delivery Date (other than
                           the financial statements and related schedules and
                           numerical and statistical data therein, as to which
                           such counsel need express no opinion), when they
                           became effective or were filed with the Commission,
                           as the case may be, complied as to form in all
                           material respects with the requirements of the
                           Securities Act or the Exchange Act, as applicable,
                           and the rules and regulations of the Commission
                           thereunder;

                                  (vii) The statements contained in the
                           Prospectus under the caption "Certain Federal Income
                           Tax Consequences" and "Risk Factors -- Adverse
                           Consequences of Failure to Qualify as a REIT,"
                           insofar as they describe federal statutes, rules and
                           regulations, constitute a fair summary thereof and
                           the opinion of such counsel filed as Exhibit 8 to the
                           Registration Statement is confirmed and the
                           Underwriters may rely upon such opinion as if it were
                           addressed to them;

                                 (viii) To the knowledge of such counsel, there
                           are no contracts or other documents which are
                           required to be described in the Prospectus or filed
                           as exhibits to the Registration Statement by the
                           Securities Act or by the Rules and Regulations which
                           have not been described or filed as exhibits to the
                           Registration Statement or incorporated therein by
                           reference as permitted by the Rules and Regulations;

                                   (ix) This Agreement has been duly authorized,
                           executed and delivered by the Trust and the Operating
                           Partnership;

                                    (x) The issue and sale of the Shares being
                           delivered on such Delivery Date by the Trust and the
                           compliance by the Trust and the Operating Partnership
                           with all of the provisions of this Agreement and the
                           consummation of the transactions contemplated hereby
                           will not conflict with or result in a breach or
                           violation of any of the terms or provisions of, or
                           constitute a default under, any indenture, mortgage,
                           deed of trust, loan agreement or other agreement or
                           instrument known to such counsel to which the Trust,
                           the Operating Partnership or any of their
                           subsidiaries is a party or by which they are bound or
                           to which any of the property or assets of the Trust,
                           the Operating Partnership or any of their
                           subsidiaries is subject, nor will such actions result
                           in any violation of the provisions of the trust
                           agreement, charter or bylaws or partnership agreement
                           of the Trust, the Operating Partnership or any of
                           their subsidiaries or any statute or any order, rule
                           or regulation known to such counsel of any court or
                           governmental agency or body having jurisdiction over
                           the Trust, the

                                     - 18 -




<PAGE>

                           Operating Partnership or any of their subsidiaries or
                           any of their properties or assets; and, except for
                           the registration of the Shares under the Securities
                           Act and such consents, approvals, authorizations,
                           registrations or qualifications as may be required
                           under the Exchange Act and applicable state
                           securities laws in connection with the purchase and
                           distribution of the Shares by the Underwriters, no
                           consent, approval, authorization or order of, or
                           filing or registration with, any such court or
                           governmental agency or body is required for the
                           execution, delivery and performance of this Agreement
                           by the Trust and the Operating Partnership and the
                           consummation of the transactions contemplated hereby;

                                   (xi) Except as described in the Prospectus,
                           to the knowledge of such counsel, there are no
                           contracts, agreements or understandings between the
                           Trust and any person granting such person the right
                           to require the Trust to file a registration statement
                           under the Securities Act with respect to any
                           securities of the Trust owned or to be owned by such
                           person or to require the Trust to include such
                           securities in the securities registered pursuant to
                           the Registration Statement or in any securities being
                           registered pursuant to any other registration
                           statement filed by the Trust under the Securities
                           Act; and.

                                  (xii) Neither the Trust, the Operating
                           Partnership nor any subsidiary is an "investment
                           company" within the meaning of such term under the
                           Investment Company Act of 1940 and the rules and
                           regulations of the Commission thereunder.

                  In rendering such opinion, such counsel may (i) state that its
                  opinion is limited to matters governed by the Federal laws of
                  the United States of America, the laws of Pennsylvania and the
                  corporate law of Delaware; (ii) rely (to the extent such
                  counsel deems proper and specifies in their opinion), as to
                  matters involving the application of laws of other
                  jurisdictions upon the opinion of other counsel of good
                  standing, provided that such other counsel is satisfactory to
                  counsel for the Underwriters and furnishes a copy of its
                  opinion to the Representatives. Such counsel shall also have
                  furnished to the Representatives a written statement,
                  addressed to the Underwriters and dated such Delivery Date, in
                  form and substance satisfactory to the Representatives, to the
                  effect that (x) such counsel has acted as counsel to the Trust
                  on a regular basis and has acted as counsel to the Trust in
                  connection with the preparation of the Prospectus, and (y)
                  based on the foregoing, no facts have come to the attention of
                  such counsel which lead them to believe that (I) the
                  Registration Statement, as of the date of the Trust's most
                  recently filed Annual Report on Form 10-K as amended through
                  the date hereof, contained any untrue statement of a material
                  fact or omitted to state a material fact required to be stated
                  therein or necessary in order to make the

                                     - 19 -




<PAGE>

                  statements therein not misleading, or that the Prospectus
                  contains any untrue statement of a material fact or omits to
                  state a material fact required to be stated therein or
                  necessary in order to make the statements therein, in light of
                  the circumstances under which they were made, not misleading
                  or (II) any document incorporated by reference in the
                  Prospectus or any further amendment or supplement to any such
                  incorporated document made by the Trust prior to such Delivery
                  Date, when they became effective or were filed with the
                  Commission, as the case may be, contained, in the case of a
                  registration statement which became effective under the
                  Securities Act, any untrue statement of a material fact or
                  omitted to state a material fact required to be stated therein
                  or necessary in order to make the statements therein not
                  misleading, or, in the case of other documents which were
                  filed under the Exchange Act with the Commission, an untrue
                  statement of a material fact or omitted to state a material
                  fact necessary in order to make the statements therein, in
                  light of the circumstances under which they were made, not
                  misleading. The foregoing opinion and statement may be
                  qualified by a statement to the effect that such counsel does
                  not assume any responsibility for the accuracy, completeness
                  or fairness of the statements contained in the Registration
                  Statement or the Prospectus except for the statements made in
                  the Prospectus under the caption "Description of Shares of
                  Beneficial Interest" and "Certain Federal Income Tax
                  Consequences," insofar as such statements relate to the Shares
                  and concern legal matters and that such counsel expresses no
                  view as to the financial statements and related schedules
                  included or incorporated by reference in the Registration
                  Statement or Prospectus.

                           (e) The Representatives shall have received from
                  Hogan & Hartson L.L.P., counsel for the Underwriters, such
                  opinion or opinions, dated such Delivery Date, with respect to
                  the issuance and sale of the Shares, the Registration
                  Statement, the Prospectus and other related matters as the
                  Representatives may reasonably require, and the Trust shall
                  have furnished to such counsel such documents as they
                  reasonably request for the purpose of enabling them to pass
                  upon such matters.

                           (f) At the time of execution of this Agreement, the
                  Representatives shall have received from Arthur Anderson,
                  L.L.P. a letter, in form and substance satisfactory to the
                  Representatives, addressed to the Underwriters and dated the
                  date hereof (i) confirming that they are independent public
                  accountants within the meaning of the Securities Act and are
                  in compliance with the applicable requirements relating to the
                  qualification of accountants under Rule 2-01 of Regulation S-X
                  of the Commission, (ii) stating, as of the date hereof (or,
                  with respect to matters involving changes or developments
                  since the respective dates as of which specified financial
                  information is given in the Prospectus, as of a date not more
                  than five days prior to the date hereof), the conclusions and
                  findings of such firm with respect to the financial
                  information and other matters ordinarily

                                     - 20 -




<PAGE>

                  covered by accountants' "comfort letters" to underwriters in
                  connection with registered public offerings.

                           (g) With respect to the letter of Arthur Anderson
                  L.L.P., referred to in the preceding paragraph and delivered
                  to the Representatives concurrently with the execution of this
                  Agreement (the "initial letter"), the Trust shall have
                  furnished to the Representatives a letter (the "bring-down
                  letter") of such accountants, addressed to the Underwriters
                  and dated such Delivery Date (i) confirming that they are
                  independent public accountants within the meaning of the
                  Securities Act and are in compliance with the applicable
                  requirements relating to the qualification of accountants
                  under Rule 2-01 of Regulation S-X of the Commission, (ii)
                  stating, as of the date of the bring-down letter (or, with
                  respect to matters involving changes or developments since the
                  respective dates as of which specified financial information
                  is given in the Prospectus, as of a date not more than five
                  days prior to the date of the bring-down letter), the
                  conclusions and findings of such firms with respect to the
                  financial information and other matters covered by the initial
                  letter and (iii) confirming in all material respects the
                  conclusions and findings set forth in the initial letter.

                           (h) The Trust shall have furnished to the
                  Representatives a certificate, dated such Delivery Date, of
                  its Chairman of the Board, its Chief Executive Officer, its
                  President and its Chief Financial Officer stating that:

                                    (i) The representations, warranties and
                           agreements of the Trust and the Operating Partnership
                           in Section 1 are true and correct as of such Delivery
                           Date; the Trust and the Operating Partnership have
                           complied with all of their agreements contained
                           herein; and the conditions set forth in Sections 7(a)
                           and 7(i) have been fulfilled; and

                                   (ii) They have carefully examined the
                           Registration Statement and the Prospectus and, in
                           their opinion (A) as of the Effective Date and the
                           date of the Trust's most recently filed Annual Report
                           on Form 10-K, as amended through the date hereof,
                           (the "10-K"), the Registration Statement and
                           Prospectus did not include any untrue statement of a
                           material fact and did not omit to state a material
                           fact required to be stated therein or necessary to
                           make the statements therein not misleading, and (B)
                           since the filing date of the 10-K no event has
                           occurred which should have been set forth in a
                           supplement or amendment to the Registration Statement
                           or the Prospectus.

                           (i) (i) Neither the Trust, the Operating Partnership
                  nor any of their subsidiaries shall have sustained since the
                  date of the latest audited financial statements included or
                  incorporated by reference in the Prospectus any loss or

                                     - 21 -




<PAGE>

                  interference with its business from fire, explosion, flood or
                  other calamity, whether or not covered by insurance, or from
                  any labor dispute or court or governmental action, order or
                  decree, otherwise than as set forth or contemplated in the
                  Prospectus or (ii) since such date there shall not have been
                  any change in the equity or long-term debt of the Trust, the
                  Operating Partnership or any of their subsidiaries or any
                  change, or any development involving a prospective change, in
                  or affecting the general affairs, management, financial
                  position, shareholders' equity or results of operations of the
                  Trust, the Operating Partnership and their subsidiaries,
                  otherwise than as set forth or contemplated in the Prospectus,
                  the effect of which, in any such case described in clause (i)
                  or (ii), is, in the judgment of the Representatives, so
                  material and adverse as to make it impracticable or
                  inadvisable to proceed with the public offering or the
                  delivery of the Shares being delivered on such Delivery Date
                  on the terms and in the manner contemplated in the Prospectus.

                           (j) Subsequent to the execution and delivery of this
                  Agreement there shall not have occurred any of the following:
                  (i) trading in securities generally on the New York Stock
                  Exchange or the American Stock Exchange or in the
                  over-the-counter market, or trading in any securities of the
                  Trust on any exchange or in the over-the-counter market, shall
                  have been suspended or minimum prices shall have been
                  established on any such exchange or such market by the
                  Commission, by such exchange or by any other regulatory body
                  or governmental authority having jurisdiction, (ii) a banking
                  moratorium shall have been declared by Federal or state
                  authorities, (iii) the United States shall have become engaged
                  in hostilities, there shall have been an escalation in
                  hostilities involving the United States or there shall have
                  been a declaration of a national emergency or war by the
                  United States or (iv) there shall have occurred such a
                  material adverse change in general economic, political or
                  financial conditions (or the effect of international
                  conditions on the financial markets in the United States shall
                  be such) as to make it, in the judgment of a majority in
                  interest of the several Underwriters, impracticable or
                  inadvisable to proceed with the public offering or delivery of
                  the Shares being delivered on such Delivery Date on the terms
                  and in the manner contemplated in the Prospectus.

                           (k) The New York Stock Exchange shall have approved
                  the Shares for listing, subject only to official notice of
                  issuance.

                  All opinions, letters, evidence and certificates mentioned
above or elsewhere in this Agreement shall be deemed to be in compliance with
the provisions hereof only if they are in form and substance reasonably
satisfactory to counsel for the Underwriters.


                                     - 22 -




<PAGE>

                  8. Indemnification and Contribution.

                  (a) The Trust and the Operating Partnership, jointly and
severally, shall indemnify and hold harmless each Underwriter, its officers and
employees and each person, if any, who controls any Underwriter within the
meaning of the Securities Act, from and against any loss, claim, damage or
liability, joint or several, or any action in respect thereof (including, but
not limited to, any loss, claim, damage, liability or action relating to
purchases and sales of Shares), to which that Underwriter, officer, employee or
controlling person may become subject, under the Securities Act or otherwise,
insofar as such loss, claim, damage, liability or action arises out of, or is
based upon, (i) any untrue statement or alleged untrue statement of a material
fact contained (A) in any Preliminary Prospectus, the Registration Statement or
the Prospectus or in any amendment or supplement thereto or (B) in any blue sky
application or other document prepared or executed by the Trust (or based upon
any written information furnished by the Trust) specifically for the purpose of
qualifying any or all of the Shares under the securities laws of any state or
other jurisdiction (any such application, document or information being
hereinafter called a "Blue Sky Application"), (ii) the omission or alleged
omission to state in any Preliminary Prospectus, the Registration Statement or
the Prospectus, or in any amendment or supplement thereto, or in any Blue Sky
Application any material fact required to be stated therein or necessary to make
the statements therein not misleading or (iii) any act or failure to act or any
alleged act or failure to act by any Underwriter in connection with, or relating
in any manner to, the Shares or the offering contemplated hereby, and which is
included as part of or referred to in any loss, claim, damage, liability or
action arising out of or based upon matters covered by clause (i) or (ii) above
(provided that the Trust and the Operating Partnership shall not be liable under
this clause (iii) to the extent that it is determined in a final judgment by a
court of competent jurisdiction that such loss, claim, damage, liability or
action resulted directly from any such acts or failures to act undertaken or
omitted to be taken by such Underwriter through its gross negligence or willful
misconduct), and shall reimburse each Underwriter and each such officer,
employee or controlling person promptly upon demand for any legal or other
expenses reasonably incurred by that Underwriter, officer, employee or
controlling person in connection with investigating or defending or preparing to
defend against any such loss, claim, damage, liability or action as such
expenses are incurred; provided, however, that the Trust and the Operating
Partnership shall not be liable in any such case to the extent that any such
loss, claim, damage, liability or action arises out of, or is based upon, (i)
the failure of any Underwriter to deliver a Prospectus as required by law,
provided, that the Company has satisfied its obligation hereunder to deliver to
the Underwriter the number of Prospectuses requested by such Underwriter, or
(ii) any untrue statement or alleged untrue statement or omission or alleged
omission made in any Preliminary Prospectus, the Registration Statement or the
Prospectus, or in any such amendment or supplement, or in any Blue Sky
Application, in reliance upon and in conformity with written information
concerning such Underwriter furnished to the Trust through the Representatives
by or on behalf of any Underwriter specifically for inclusion therein. The
foregoing indemnity agreement is in addition to any liability which the Trust or
the Operating Partnership may otherwise have to any Underwriter or to any
officer, employee or controlling person of that Underwriter.

                                     - 23 -




<PAGE>


                  (b) Each Underwriter, severally and not jointly, shall
indemnify and hold harmless the Trust, the Operating Partnership, their officers
and employees, each of their trustees (including any person who, with his or her
consent, is named in the Registration Statement as about to become a trustee of
the Trust), and each person, if any, who controls the Trust within the meaning
of the Securities Act, from and against any loss, claim, damage or liability,
joint or several, or any action in respect thereof, to which the Trust or any
such trustee, officer or controlling person may become subject, under the
Securities Act or otherwise, insofar as such loss, claim, damage, liability or
action arises out of, or is based upon, (i) any untrue statement or alleged
untrue statement of a material fact contained (A) in any Preliminary Prospectus,
the Registration Statement or the Prospectus or in any amendment or supplement
thereto, or (B) in any Blue Sky Application or (ii) the omission or alleged
omission to state in any Preliminary Prospectus, the Registration Statement or
the Prospectus, or in any amendment or supplement thereto, or in any Blue Sky
Application any material fact required to be stated therein or necessary to make
the statements therein not misleading, but in each case only to the extent that
the untrue statement or alleged untrue statement or omission or alleged omission
was made in reliance upon and in conformity with written information concerning
such Underwriter furnished to the Trust through the Representatives by or on
behalf of that Underwriter specifically for inclusion therein, and shall
reimburse the Trust and any such trustee, officer or controlling person for any
legal or other expenses reasonably incurred by the Trust or any such trustee,
officer or controlling person in connection with investigating or defending or
preparing to defend against any such loss, claim, damage, liability or action as
such expenses are incurred. The foregoing indemnity agreement is in addition to
any liability which any Underwriter may otherwise have to the Trust or any such
trustee, officer, employee or controlling person.

                  (c) Promptly after receipt by an indemnified party under this
Section 8 of notice of any claim or the commencement of any action, the
indemnified party shall, if a claim in respect thereof is to be made against the
indemnifying party under this Section 8, notify the indemnifying party in
writing of the claim or the commencement of that action; provided, however, that
the failure to notify the indemnifying party shall not relieve it from any
liability which it may have under this Section 8 except to the extent it has
been materially prejudiced by such failure and, provided further, that the
failure to notify the indemnifying party shall not relieve it from any liability
which it may have to an indemnified party otherwise than under this Section 11.
If any such claim or action shall be brought against an indemnified party, and
it shall notify the indemnifying party thereof, the indemnifying party shall be
entitled to participate therein and, to the extent that it wishes, jointly with
any other similarly notified indemnifying party, to assume the defense thereof
with counsel reasonably satisfactory to the indemnified party. After notice from
the indemnifying party to the indemnified party of its election to assume the
defense of such claim or action, the indemnifying party shall not be liable to
the indemnified party under this Section 8 for any legal or other expenses
subsequently incurred by the indemnified party in connection with the defense
thereof other than reasonable costs of investigation; provided, however, that
the Representatives shall have the right to employ counsel to represent jointly
the Representatives and those other Underwriters and their respective officers,
employees and controlling persons who may be subject to liability arising out of
any

                                     - 24 -




<PAGE>

claim in respect of which indemnity may be sought by the Underwriters against
the Trust or the Operating Partnership under this Section 8 if, in the
reasonable judgment of the Representatives, it is advisable for the
Representatives and those Underwriters, officers, employees and controlling
persons to be jointly represented by separate counsel, and in that event the
fees and expenses of such separate counsel shall be paid by the Trust or the
Operating Partnership. No indemnifying party shall (i) without the prior written
consent of the indemnified parties (which consent shall not be unreasonably
withheld), settle or compromise or consent to the entry of any judgment with
respect to any pending or threatened claim, action, suit or proceeding in
respect of which indemnification or contribution may be sought hereunder
(whether or not the indemnified parties are actual or potential parties to such
claim or action) unless such settlement, compromise or consent includes an
unconditional release of each indemnified party from all liability arising out
of such claim, action, suit or proceeding, or (ii) be liable for any settlement
of any such action effected without its written consent (which consent shall not
be unreasonably withheld), but if settled with the consent of the indemnifying
party or if there be a final judgment of the plaintiff in any such action, the
indemnifying party agrees to indemnify and hold harmless any indemnified party
from and against any loss or liability by reason of such settlement or judgment.

                  (d) If the indemnification provided for in this Section 8
shall for any reason be unavailable to or insufficient to hold harmless an
indemnified party under Section 8(a) or 8(b) in respect of any loss, claim,
damage or liability, or any action in respect thereof, referred to therein, then
each indemnifying party shall, in lieu of indemnifying such indemnified party,
contribute to the amount paid or payable by such indemnified party as a result
of such loss, claim, damage or liability, or action in respect thereof, (i) in
such proportion as shall be appropriate to reflect the relative benefits
received by the Trust or the Operating Partnership on the one hand and the
Underwriters on the other from the offering of the Shares or (ii) if the
allocation provided by clause (i) above is not permitted by applicable law, in
such proportion as is appropriate to reflect not only the relative benefits
referred to in clause (i) above but also the relative fault of the Trust and the
Operating Partnership on the one hand and the Underwriters on the other with
respect to the statements or omissions which resulted in such loss, claim,
damage or liability, or action in respect thereof, as well as any other relevant
equitable considerations. The relative benefits received by the Trust and the
Operating Partnership on the one hand and the Underwriters on the other with
respect to such offering shall be deemed to be in the same proportion as the
total net proceeds from the offering of the Shares purchased under this
Agreement (before deducting expenses) received by the Trust and the Operating
Partnership on the one hand, and the total underwriting discounts and
commissions received by the Underwriters with respect to the Shares purchased
under this Agreement, on the other hand, bear to the total gross proceeds from
the offering of the Shares under this Agreement, in each case as set forth in
the table on the cover page of the Prospectus. The relative fault shall be
determined by reference to whether the untrue or alleged untrue statement of a
material fact or omission or alleged omission to state a material fact relates
to information supplied by the Trust, the Operating Partnership, or the
Underwriters, the intent of the parties and their relative knowledge, access to
information and opportunity to correct or prevent such

                                     - 25 -




<PAGE>

statement or omission. For purposes of the preceding two sentences, the net
proceeds deemed to be received by the Trust shall be deemed to be also for the
benefit of the Operating Partnership and information supplied by the Trust shall
also be deemed to have been supplied by the Operating Partnership. The Trust,
the Operating Partnership, and the Underwriters agree that it would not be just
and equitable if contributions pursuant to this Section were to be determined by
pro rata allocation (even if the Underwriters were treated as one entity for
such purpose) or by any other method of allocation which does not take into
account the equitable considerations referred to herein. The amount paid or
payable by an indemnified party as a result of the loss, claim, damage or
liability, or action in respect thereof, referred to above in this Section shall
be deemed to include, for purposes of this Section 8(d), any legal or other
expenses reasonably incurred by such indemnified party in connection with
investigating or defending any such action or claim. Notwithstanding the
provisions of this Section 8(d), no Underwriter shall be required to contribute
any amount in excess of the amount by which the total price at which the Shares
underwritten by it and distributed to the public was offered to the public
exceeds the amount of any damages which such Underwriter has otherwise paid or
become liable to pay by reason of any untrue or alleged untrue statement or
omission or alleged omission. No person guilty of fraudulent misrepresentation
(within the meaning of Section 8(e) of the Securities Act) shall be entitled to
contribution from any person who was not guilty of such fraudulent
misrepresentation. The Underwriters' obligations to contribute as provided in
this Section 8(d) are several in proportion to their respective underwriting
obligations and not joint.

                  (e) The Underwriters severally confirm and the Trust and the
Operating Partnership acknowledge that the statements with respect to the public
offering of the Shares by the Underwriters set forth on the cover page of, the
legend concerning over-allotments on the inside front cover page of and the
concession and reallowance figures appearing under the caption "Underwriting"
in, the Prospectus are correct and constitute the only information concerning
such Underwriters furnished in writing to the Trust and the Operating
Partnership by or on behalf of the Underwriters specifically for inclusion in
the Registration Statement and the Prospectus.

                  9. Defaulting Underwriters.

                  If, on either Delivery Date, any Underwriter defaults in the
performance of its obligations under this Agreement, the remaining
non-defaulting Underwriters shall be obligated to purchase the Shares which the
defaulting Underwriter agreed but failed to purchase on such Delivery Date in
the respective proportions which the number of Firm Shares set opposite the name
of each remaining non-defaulting Underwriter in Schedule 1 hereto bears to the
total number of Firm Shares set opposite the names of all the remaining
non-defaulting Underwriters in Schedule 1 hereto; provided, however, that the
remaining non-defaulting Underwriters shall not be obligated to purchase any of
the Shares on such Delivery Date if the total number of the Shares which the
defaulting Underwriter or Underwriters agreed but failed to purchase on such
date exceeds 9.09% of the total number of the Shares to be purchased on such
Delivery Date,

                                     - 26 -




<PAGE>

and any remaining non-defaulting Underwriter shall not be obligated to purchase
more than 110% of the number of the Shares which it agreed to purchase on such
Delivery Date pursuant to the terms of Section 2. If the foregoing maximums are
exceeded, the remaining non-defaulting Underwriters, or those other underwriters
satisfactory to the Representatives who so agree, shall have the right, but
shall not be obligated, to purchase, in such proportion as may be agreed upon
among them, all the Shares to be purchased on such Delivery Date. If the
remaining Underwriters or other underwriters satisfactory to the Representatives
do not elect to purchase the shares which the defaulting Underwriter or
Underwriters agreed but failed to purchase on such Delivery Date, this Agreement
(or, with respect to the Second Delivery Date, the obligation of the
Underwriters to purchase, and of the Trust to sell, the Option Shares) shall
terminate without liability on the part of any non-defaulting Underwriter or the
Trust, except that the Trust will continue to be liable for the payment of
expenses to the extent set forth in Sections 6 and 11. As used in this
Agreement, the term "Underwriter" includes, for all purposes of this Agreement
unless the context requires otherwise, any party not listed in Schedule 1 hereto
who, pursuant to this Section 9, purchases Firm Shares which a defaulting
Underwriter agreed but failed to purchase.

                  Nothing contained herein shall relieve a defaulting
Underwriter of any liability it may have to the Trust for damages caused by its
default. If other underwriters are obligated or agree to purchase the Shares of
a defaulting or withdrawing Underwriter, either the Representatives or the Trust
may postpone the Delivery Date for up to seven full business days in order to
effect any changes that in the opinion of counsel for the Trust or counsel for
the Underwriters may be necessary in the Registration Statement, the Prospectus
or in any other document or arrangement.

                  10. Termination. The obligations of the Underwriters hereunder
may be terminated by the Representatives by notice given to and received by the
Trust prior to delivery of and payment for the Firm Shares if, prior to that
time, any of the events described in Sections 7(i) or 7(j), shall have occurred
or if the Underwriters shall decline to purchase the Firm Shares for any reason
permitted under this Agreement.

                  11. Reimbursement of Underwriters' Expenses. If (a) the Trust
shall fail to tender the Shares for delivery to the Underwriters by reason of
any failure, refusal or inability on the part of the Trust or the Operating
Partnership to perform any agreement on its part to be performed, or because any
other condition of the Underwriters' obligations hereunder required to be
fulfilled by the Trust or the Operating Partnership is not fulfilled, the Trust
and the Operating Partnership will reimburse the Underwriters for all reasonable
out-of-pocket expenses (including fees and disbursements of counsel) incurred by
the Underwriters in connection with this Agreement and the proposed purchase of
the Shares, and upon demand the Trust and the Operating Partnership shall pay
the full amount thereof to the Representatives. If this Agreement is terminated
pursuant to Section 9 by reason of the default of one or more Underwriters,
neither the Trust nor the Operating Partnership shall not be obligated to
reimburse any defaulting Underwriter on account of those expenses.

                                     - 27 -




<PAGE>


                  12. Notices, etc. All statements, requests, notices and
agreements hereunder shall be in writing, and:

                           (a) if to the Underwriters, shall be delivered or
                  sent by mail, telex or facsimile transmission to Lehman
                  Brothers Inc., Three World Financial Center, New York, New
                  York 10285, Attention: Syndicate Department (Fax: 212-526-
                  6588), with a copy, in the case of any notice pursuant to
                  Section 11(d), to the Director of Litigation, Office of the
                  General Counsel, Lehman Brothers Inc., 3 World Financial
                  Center, 10th Floor, New York, NY 10285;

                           (b) if to the Trust or the Operating Partnership,
                  shall be delivered or sent by mail, telex or facsimile
                  transmission to the address of the Trust set forth in the
                  Registration Statement, Attention: Jonathan B. Weller,
                  President and Chief Operating Officer (Fax: (215) 542-9179);

provided, however, that any notice to an Underwriter pursuant to Section 8(c)
shall be delivered or sent by mail, telex or facsimile transmission to such
Underwriter at its address set forth in its acceptance telex to the
Representatives, which address will be supplied to any other party hereto by the
Representatives upon request. Any such statements, requests, notices or
agreements shall take effect at the time of receipt thereof. The Trust shall be
entitled to act and rely upon any request, consent, notice or agreement given or
made on behalf of the Underwriters by Lehman Brothers Inc.

                  13. Persons Entitled to Benefit of Agreement. This Agreement
shall inure to the benefit of and be binding upon the Underwriters, the Trust,
the Operating Partnership and their respective successors. This Agreement and
the terms and provisions hereof are for the sole benefit of only those persons,
except that (A) the representations, warranties, indemnities and agreements of
the Trust and the Operating Partnership contained in this Agreement shall also
be deemed to be for the benefit of the person or persons, if any, who control
any Underwriter within the meaning of Section 15 of the Securities Act and (B)
the indemnity agreement of the Underwriters contained in Section 8(b) of this
Agreement shall be deemed to be for the benefit of trustees of the Trust, the
Operating Partnership, officers of the Trust who have signed the Registration
Statement and any person controlling the Trust within the meaning of Section 15
of the Securities Act. Nothing in this Agreement is intended or shall be
construed to give any person, other than the persons referred to in this Section
13, any legal or equitable right, remedy or claim under or in respect of this
Agreement or any provision contained herein.

                  14. Survival. The respective indemnities, representations,
warranties and agreements of the Trust, the Operating Partnership and the
Underwriters contained in this Agreement or made by or on behalf on them,
respectively, pursuant to this Agreement, shall survive the delivery of and
payment for the Shares and shall remain in full force and effect, regardless of
any investigation made by or on behalf of any of them or any person controlling
any of them.

                                     - 28 -




<PAGE>


                  15. Definition of the Terms "Business Day" and "Subsidiary."
For purposes of this Agreement, (a) "business day" means any day on which the
New York Share Exchange is open for trading and (b) "subsidiary" has the meaning
set forth in Rule 405 of the Rules and Regulations, and for purposes hereof
"subsidiary" shall include PREIT-Rubin, Inc.

                  16. Governing Law. This Agreement shall be governed by and
construed in accordance with the laws of New York.

                           Each party irrevocably agrees that any legal suit,
action or proceeding arising out of or based upon this Agreement or the
transactions contemplated hereby ("Related Proceedings") may be instituted in
the federal courts of the United States of America located in the City of New
York or the courts of the State of New York in each case located in the Borough
of Manhattan in the City of New York (collectively, the "Specified Courts"), and
irrevocably submits to the exclusive jurisdiction (except for proceedings
instituted in regard to the enforcement of a judgment of any such court (a
"Related Judgment"), as to which such jurisdiction is non-exclusive) of such
courts in any such suit, action or proceeding. The parties further agree that
service of any process, summons, notice or document by mail to such party's
address set forth above shall be effective service of process for any lawsuit,
action or other proceeding brought in any such court. The parties hereby
irrevocably and unconditionally waive any objection to the laying of venue of
any lawsuit, action or other proceeding in the Specified Courts, and hereby
further irrevocably and unconditionally waive and agree not to plead or claim in
any such court that any such lawsuit, action or other proceeding brought in any
such court has been brought in an inconvenient forum.

                  17. Counterparts. This Agreement may be executed in one or
more counterparts and, if executed in more than one counterpart, the executed
counterparts shall each be deemed to be an original but all such counterparts
shall together constitute one and the same instrument.

                  18. Headings. The headings herein are inserted for convenience
of reference only and are not intended to be part of, or to affect the meaning
or interpretation of, this Agreement.


                                     - 29 -




<PAGE>

                  If the foregoing correctly sets forth the agreement between
the Trust, the Operating Partnership and the Underwriters, please indicate your
acceptance in the space provided for that purpose below.

                               Very truly yours,

                               PENNSYLVANIA REAL ESTATE INVESTMENT
                               TRUST

                               By:  /s/ Jonathan B. Weller
                                    ------------------------------------
                                    Name:  Jonathan B. Weller
                                    Title: President

                               PREIT ASSOCIATES, L.P., the Operating
                                  Partnership

                               By:  Pennsylvania Real Estate Investment Trust,
                                      its General Partner

                                    By:  /s/ Jonathan B. Weller
                                         ------------------------------------
                                             Name:  Jonathan B. Weller
                                             Title: President

Accepted:

LEHMAN BROTHERS INC.
LEGG MASON WOOD WALKER, INCORPORATED
MERRILL LYNCH, PIERCE, FENNER & SMITH
     INCORPORATED
SMITH BARNEY INC.
WHEAT, FIRST SECURITIES, INC.

By:      /s/ Spencer B. Haber
         ------------------------------
         Authorized Representative

For themselves and as Representatives
of the several Underwriters named
in Schedule 1 hereto


                                     - 30 -




<PAGE>


                                   SCHEDULE 1


         Number of Underwriters                                       Shares
         ----------------------                                       ------

         Lehman Brothers Inc.....................................     800,000

         Legg Mason Wood Walker, Incorporated....................     800,000

         Merrill Lynch, Pierce Fenner & Smith Incorporated.......     800,000

         Smith Barney Inc........................................     800,000

         Wheat, First Securities, Inc............................     800,000
                                                                      -------

                  Total..........................................   4,000,000
                                                                    =========









<PAGE>

                                                                     EXHIBIT 3.3

                                            As Amended Through December 16, 1997


                                     BY-LAWS

                                       of

                    PENNSYLVANIA REAL ESTATE INVESTMENT TRUST

                         (a Pennsylvania business trust)


                       Article 1. MEETINGS OF SHAREHOLDERS

                           Section 1.01. Place of Meeting. Meetings of
shareholders of the Trust shall be held at such place, within or without the
Commonwealth of Pennsylvania, as may be fixed from time to time by the Board of
Trustees. If no place is so fixed for a meeting, it shall be held at the Trust's
then principal executive office.

                           Section 1.02. Annual Meeting. An annual meeting of
shareholders shall be held, unless the Board of Trustees shall fix some other
hour or date therefor, no later than the second Wednesday of the sixth month
following the end of each fiscal year of the Trust, at which the shareholders
shall elect by plurality vote individuals to the office of Trustee as provided
in Paragraph 2.B of the Trust Agreement of the Trust (the "Trust Agreement") and
transact such other business as may properly be brought before the meeting.

                           Section 1.03. Special Meetings. Special meetings of
the shareholders may be called at any time by the Chairman or by the Chief
Executive Officer or by the Board of Trustees or by shareholders entitled to
cast at least 40% of the votes that all shareholders are entitled to cast at the
particular meeting.

                           Section 1.04. Notice of Meetings. Written notice of
every meeting of shareholders shall be given in any manner permitted by law by
or at the direction of the Secretary or such other person as is authorized by
the Board of Trustees to each shareholder of record entitled to receipt thereof,
at least ten (10) days, and not more than forty-five (45) days, prior to the day
named for the meeting, unless a greater period of notice is required by law in a
particular case.

                           Section 1.05. Organization. At every meeting of the
shareholders, the Chairman, or in his absence, the Chief Executive Officer, or,
in the absence of both the Chairman and the Chief Executive Officer, the
President, or, in the absence of the Chairman, the Chief Executive Officer and
the President, a chairman chosen by the



<PAGE>

shareholders at the commencement of the meeting, shall act as chairman; and the
Secretary, or in his absence, a person appointed by the chairman, shall act as
secretary.

                           Section 1.06. Voting. Except as otherwise specified
herein or in the Trust Agreement or required by law, whenever any action is to
be taken by vote of shareholders, it shall be authorized by a majority of the
votes cast by all shareholders on such matter and, if any shareholders are
entitled to vote thereon as a class, upon receiving a majority of the votes cast
by the shareholders entitled to vote as a class. In each election of trustees,
the candidates receiving the highest number of votes, up to the number of
trustees to be elected in such election, shall be elected.


                               Article 2. TRUSTEES

                           Section 2.01. Number and Term of Office. The number
of trustees of the Trust shall be designated from time to time by resolution of
the Board of Trustees, such number to not be more than fifteen (15) nor less
than five (5). Each trustee shall be elected for the term of three (3) years as
set forth in Paragraph 2.B of the Trust Agreement and shall serve until his
successor is elected and qualified or until his earlier death, resignation or
removal.

                           Section 2.02. Resignations. Any trustee may resign at
any time by delivering to any other trustee and to the principal office of the
Trust written notification of his resignation, which resignation shall be
effective when received, but if the effect of such resignation shall be to
reduce the number of trustees below five (5), no such resignation shall be
effective until a successor shall have been elected by the remaining trustees.

                           Section 2.03. Annual Meeting. Immediately after each
annual election of trustees, the Board of Trustees shall meet for the purpose of
organization, election of officers, appointment of the members of committees of
the Board of Trustees, and the transaction of other business, at the place where
such election of trustees was held. Notice of such meeting need not be given. In
the absence of a quorum at said meeting, the same may be held at any other time
and place specified in a notice given as hereinafter provided for special
meetings of the Board of Trustees.

                           Section 2.04. Regular Meetings. Regular meetings of
the Board of Trustees shall be held at such time and place as may be designated
from time to time by the Board of Trustees. If the date fixed for any such
regular meeting is a legal holiday under the laws of the State where such
meeting is to be held, then the same shall be held on the next succeeding
secular day not a legal holiday under the laws of said State, or at such other
time as may be determined by resolution of the Board of Trustees. At such
meetings the Board of Trustees may transact such business as may be brought
before the meeting.


                                       -2-



<PAGE>

                           Section 2.05. Special Meetings. Special Meetings of
the Board of Trustees shall be called by the Chairman or by the Chief Executive
Officer or by two or more of the other trustees and shall be held at such time
and in such place as shall be designated in the notice of the meeting. Such
notice shall be given by or at the direction of the person or persons authorized
to call such meeting to each trustee at least two (2) days prior to the day
named for the meeting, unless a different notice period is provided for
hereunder based upon the subject matter of such meeting.

                           Section 2.06. (a) Organization; Quorum; Voting. Every
meeting of the Board of Trustees shall be presided over by the Chairman, if one
has been selected and is present, and, if not, the Chief Executive Officer, or
in the absence of the Chairman and the Chief Executive Officer, a chairman
chosen by a majority of the trustees present. The Secretary, or in his absence,
a person appointed by the chairman, shall act as secretary.

                           (b) A majority of the trustees in office, provided
that the majority consists of at least four (4) trustees, shall constitute a
quorum for the conduct of business. Subject to the provisions of Section 6.04 of
these By-Laws, trustees shall be deemed present at a meeting if by means of
conference telephone or similar communications equipment all persons
participating in the meeting can hear each other. If there are fewer than five
(5) trustees, the remainder shall constitute a quorum and must act to fill
vacancies to bring the total number of trustees to at least five (5). If a
quorum is not present at any meeting, a majority of the trustees present at the
meeting may adjourn the meeting to any later date and the meeting may be held at
such later date without any further notice.

                           (c) Except as otherwise required by law and except as
otherwise contemplated by Paragraph 3.R of the Trust Agreement and Section 3.01
of these By-Laws, the concurrence of a majority of the trustees present at any
meeting at which a quorum is present shall be necessary to the validity of any
action taken by them.

                           Section 2.07. Action By Written Consent. In lieu of a
meeting, action may be taken by the consent in writing of at least seventy-five
percent (75%) of the trustees then serving. In any event, the concurrence or
consent in writing of at least four (4) trustees shall be necessary to the
validity of any action taken. The minimum voting requirements specified in this
paragraph shall apply, as a minimum requirement, with respect to any and all
action taken by the trustees under the Trust Agreement.

                           Section 2.08. Compensation. The Board of Trustees
shall have the authority to fix the compensation of trustees for their services
as trustees. Any person serving as a trustee may also be a salaried officer of
the Trust, but, in such event, no compensation shall be paid to such person in
respect of his or her service as a trustee or as a member of any committee of
the Board of Trustees.

                                       -3-



<PAGE>

                              Article 3. COMMITTEES

                           Section 3.01. General. The Board of Trustees may, by
the vote of at least a majority of those trustees then in office, establish one
or more standing or special committees to consist of one or more trustees of the
Trust. Any committee, to the extent provided by the Board of Trustees, shall
have and may exercise all of the powers and authority of the Board of Trustees
except that a committee shall not have any power or authority as to the
following: (i) the submission to shareholders of any action requiring approval
of shareholders; (ii) the removal of any Trustee from the Board of Trustees or
the creation or filling of vacancies in the Board of Trustees; (iii) the
adoption, amendment or repeal of the Trust Agreement or these By-Laws; (iv) the
amendment or repeal of any resolution of the Board that by its terms is
amendable or repealable only by the Board; (v) action on matters committed by
these By-Laws or resolution of the Board of Trustees to another committee of the
Board; and (vi) final, formal action on behalf of the Trust prior to approval of
the Board of Trustees unless final authority with respect to such matter has
been specifically delegated by the Board of Trustees to such committee. In
furtherance of the power of the Board of Trustees to establish committees of
Trustees pursuant to Paragraph 3.R of the Trust Agreement and this Section 3.01,
the Board of Trustees, by adoption of these By-Laws, has established the
standing committees of the Board of Trustees set forth in Sections 3.02 through
3.04 hereof.

                           Section 3.02. The Audit Committee. (a) The Audit
Committee of the Board of Trustees shall consist of three trustees, each of whom
shall (i) not be a current or former officer or employee of the Trust or of any
affiliate of the Trust, and (ii) not receive compensation from the Trust other
than in his or her capacity as trustee. The members of the Audit Committee shall
be appointed annually by the Board of Trustees at the Annual Meeting of the
Board of Trustees and shall serve at the pleasure of the Board of Trustees until
the next Annual Meeting of the Board of Trustees and until their successors have
been appointed. Vacancies at the Audit Committee may be filled by the Board of
Trustees at any regular or special meeting of the Board of Trustees.

                           (b) The Board of Trustees shall appoint one member of
the Audit Committee as the Chair and a majority of the members of the Audit
Committee shall constitute a quorum for the conduct of business. Regular
meetings of the Audit Committee shall be held at such time and place as shall be
designated from time to time by the Committee or the Board of Trustees. Special
Meetings of the Audit Committee may be called by the Chair on not less than two
(2) days prior written notice. Such special meetings shall be held at such time
and place as shall be designated in the call of the meeting.


                                       -4-



<PAGE>

                           (c) The principal functions and responsibilities of
the Audit Committee shall be as follows: (i) make a recommendation to the Board
of Trustees, not less than annually, with respect to the firm to engage as the
Trust's external auditing firm and whether to terminate the Trust's relationship
with any external auditing firm previously maintained; (ii) monitor factors
which might adversely affect the independence of the Trust's external auditing
firm; (iii) review, and make recommendations to the Board of Trustees with
respect to, compensation of the Trust's external auditing firm; (iv) review the
appointment and replacement of any senior internal auditing executives of the
Trust or affiliates; (v) serve as a channel of communication between the Trust's
external auditing firm and the Board of Trustees and between the Trust's senior
internal auditor, if any, and the Board of Trustees; (vi) review the results of
each external audit, including any qualifications in the opinion of the external
auditing firm, any related management letter, management's responses to
recommendations made by the external auditing firm in connection with the audit,
reports submitted to the Audit Committee by the internal auditing department
that are material to the Trust as a whole, and management's responses to those
reports; (vii) review the Trust's annual financial statements prior to
publication; (viii) review any significant disputes between management and the
external auditing firm that arose in connection with the preparation of the
Trust's annual financial statements; (ix) consider major changes and other major
questions of choice regarding the appropriate auditing and accounting principles
and practices to be followed when preparing the Trust's financial statements;
and, (x) perform such other duties as may be assigned to the Audit Committee by
the Board of Directors.

                           Section 3.03. The Executive Compensation and Human
Resources Committee. (a) The Executive Compensation and Human Resources
Committee of the Board of Trustees shall consist of three trustees, each of whom
shall be a "non-employee director" as that term is defined in Rule 16b-3 under
the Securities Exchange Act of 1934. The members of the Executive Compensation
and Human Resources Committee shall be appointed annually by the Board of
Trustees at the Annual Meeting of the Board of Trustees and shall serve at the
pleasure of the Board of Trustees until the next Annual Meeting of the Board of
Trustees and until their successors have been appointed. Vacancies at the
Executive Compensation and Human Resources Committee may be filled by the Board
of Trustees at any regular or special meeting of the Board of Trustees.

                           (b) The Board of Trustees shall appoint one member of
the Executive Compensation and Human Resources Committee as the Chair and a
majority of the members of the Executive Compensation and Human Resources
Committee shall constitute a quorum for the conduct of business. Regular
meetings of the Executive Compensation and Human Resources Committee shall be
held at such time and place as shall be designated from time to time by the
Committee or the Board of Trustees. Special Meetings of the Executive
Compensation and Human Resources Committee may be called by the Chair on not
less than

                                       -5-



<PAGE>

two (2) days prior written notice. Such special meetings shall be held at such
time and place as shall be designated in the call of the meeting.

                           (c) The principal functions and responsibilities of
the Executive Compensation and Human Resources Committee shall be as follows:
(i) review the Trust's principal personnel policies and benefit programs and
monitor their implementation; (ii) review the compensation of senior executive
officers of the Trust and the compensation policies of the Trust and their
implementation, and make recommendations thereon to the Board of Trustees; (iii)
appoint the persons, officers of Trust or an outside investment manager, to
determine and direct the investment of the assets of any funded benefit plans of
the Trust, all in accordance with the terms and conditions of such plans, or, if
so provided in any such plan, serving in such capacity itself; (iv) appoint the
members of the benefit plans administrative committee, as provided in the
various plans; (v) review periodically the compensation of senior executive
officers and submit to the Board of Trustees recommendations for adjustments;
(vi) review periodically the compensation level of Trustees and make
recommendations to the Board of Trustees with respect thereto; (vii) recommend
for approval by the Board of Trustees any performance objectives which may be
required in connection with incentive or other programs, and, if so provided in
any such plan, administering or managing the plan itself; (viii) administer the
stock option plans of the Trust, subject to the terms of such plans, including
the granting of any stock options thereunder, each to the extent provided in
such plans; (ix) consider and recommend to the Board of Trustees prior to the
annual meeting of shareholders nominees for election or reelection to the Board
of Trustees at the annual meeting, and in the event a vacancy occurs, propose to
the Board of Trustees individuals for election by the Board of Trustees, to
serve until the next Annual Meeting of Shareholders; and, (x) perform such other
duties as may be assigned to the Executive Compensation and Human Resources
Committee by the Board of Trustees.

                           Section 3.04. The Property Committee. (a) The
Property Committee of the Board of Trustees shall consist of three trustees. The
Chairman shall be a member of the Property Committee and the other two members
shall be trustees who (i) are not current or former officers or employees of the
Trust or of any affiliate of the Trust, and (ii) do not receive compensation
from the Trust other than in their capacities as trustees. The Chief Executive
Officer and the President shall be non-voting ex officio members of the Property
Committee. The members of the Property Committee shall be appointed annually by
the Board of Trustees at the Annual Meeting of the Board of Trustees and shall
serve at the pleasure of the Board of Trustees until the next Annual Meeting of
the Board of Trustees and until their successors have been appointed. Vacancies
at the Property Committee may be filled by the Board of Trustees at any regular
or special meeting of the Board of Trustees.


                                       -6-



<PAGE>

                           (b) The Chairman shall be the Chair of the Property
Committee and a majority of the voting members of the Property Committee shall
constitute a quorum for the conduct of business. Regular meetings of the
Property Committee shall be held at such time and place as shall be designated
from time to time by the Committee or the Board of Trustees. Special Meetings of
the Property Committee may be called by the Chair on not less than two (2) days
prior written notice. Such special meetings shall be held at such time and place
as shall be designated in the call of the meeting.

                           (c) The principal functions and responsibilities of
the Property Committee shall be as follows: (i) review and make recommendations
to the Board of Trustees with respect to all proposed acquisitions and
dispositions of real property, and direct or indirect interests therein, by the
Trust and its affiliates, including the economic and other principal terms of
each such proposed transaction and the desirability thereof; (ii) review and
make recommendations to the Board of Trustees with respect to all proposed
expansions, refurbishing or new developments on properties owned by, and
properties to be acquired by, the Trust or any of its affiliates; (iii) review
on an annual basis the entire portfolio of real property, and interests therein,
owned by the Trust and its affiliates and consider, among other matters,
indications (with or without appraisals) of the current fair market value of the
Trust's real property assets in relationship to their respective book values;
(iv) review and approve appropriate rental levels and lease terms for all
properties owned, in whole or in part, directly or indirectly, by the Trust or
any affiliate thereof and general maintenance and other expenditures and
policies with respect to such properties; and, (v) perform such other duties as
may be assigned to the Property Committee by the Board of Trustees.


                               Article 4. OFFICERS

                           Section 4.01. Number. The officers of the Trust shall
be a Chairman, a Chief Executive Officer, a President, a Chief Financial
Officer, a Treasurer, a Secretary and may include one or more Vice Presidents,
one or more Assistant Secretaries, one or more Assistant Treasurers, and such
other officers as the Board of Trustees may authorize from time to time.

                           Section 4.02. Qualifications. The officers of the
Trust shall be natural persons of full age. Any person may hold any number of
offices except that the Secretary shall not hold the office of Chief Executive
Officer or President.

                           Section 4.03. Election and Term of Office. The
officers of the Trust shall be elected or appointed by the Board of Trustees and
each shall serve at the pleasure of the Board of Trustees.


                                       -7-



<PAGE>

                           Section 4.04. Resignations. Any officer may resign at
any time by giving written notice to the Board of Trustees, the Chief Executive
Officer or the Secretary. The resignation shall be effective upon receipt
thereof or at such subsequent time as may be specified in the notice of
resignation. Unless otherwise specified therein, the acceptance of such
resignation shall not be necessary to make it effective.

                           Section 4.05. Chairman. The Chairman shall preside at
the meetings of the Board of Trustees and the Shareholders. The Chairman shall
serve as Chair of the Property Committee of the Board of Trustees. The Chairman
shall also perform such other duties as may be specified by the Board of
Trustees from time to time and as do not conflict with the duties of the Chief
Executive Officer or President.

                           Section 4.06. The Chief Executive Officer. The Chief
Executive Officer shall be the chief executive officer of the Trust and shall
have general supervision over the business and operations of the Trust, subject,
however, to the control of the Board of Trustees. He shall have the authority to
execute and deliver, in the name and on behalf of the Trust, deeds, mortgages,
bonds, agreements and other instruments authorized by the Board of Trustees,
except in cases where the signing and execution thereof is expressly delegated
by the Board of Trustees to some other officer or agent of the Trust; and, in
general, he shall perform all duties incident to the office of Chief Executive
Officer. The Chief Executive Officer shall also perform such other duties as may
be assigned to him or her from time to time by the Board of Trustees.

                           Section 4.07. President. The President shall be the
chief operating officer of the Trust and shall be responsible for the day-to-day
operations of the Trust, subject to the general supervision of the Chief
Executive Officer. In the absence or unavailability of the Chief Executive
Officer, he shall exercise the duties and responsibilities of that office and
may, whether or not the Chief Executive Officer is present or available, execute
and deliver documentation on behalf of the Trust to the same extent that the
Chief Executive Officer is authorized hereby to do so. The President shall also
perform such other duties as shall be assigned to him or her from time to time
by the Board of Trustees.

                           Section 4.08. The Vice Presidents. In the absence or
disability of the Chief Executive Officer or the President or when so directed
by the Chief Executive Officer or the President, any Vice President may perform
all the duties of the Chief Executive Officer or the President, and, when so
acting, shall have all the powers of, and be subject to all the restrictions
upon, the Chief Executive Officer and the President; provided, however, that no
Vice President shall act as a member of or as chairman of any committee of the
Board of Trustees of which the Chief Executive Officer or the President is a
member or chairman by designation or ex-officio, unless such Vice President is a
member of the Board of Trustees and has been designated expressly by the Board
of Trustees as the alternate to the

                                       -8-



<PAGE>

Chief Executive Officer or the President for purposes of service on such
committee. The Board of Trustees may appoint Executive, Senior and Assistant
Vice Presidents. The Vice Presidents shall perform such other duties as from
time to time may be assigned to them respectively by the Board of Trustees or
the Chief Executive Officer or the President.

                           Section 4.09. Chief Financial Officer. The Chief
Financial Officer shall be the chief financial officer of the Trust. He shall be
responsible for all internal and external financial statements and reports
relating to the financial position and results of operations of the Trust and
for the relationship between the Trust and its shareholders, institutional
creditors, and the investment community. He may exercise any and all of the
duties of the Treasurer under these By-Laws. The Chief Financial Officer shall
also perform such other duties as shall be assigned to him or her from time to
time by the Board of Trustees.

                           Section 4.10. The Treasurer. The Treasurer shall have
charge of all receipts and disbursements of the Trust and shall have or provide
for the custody of its funds and securities. Unless the Board of Trustees
determines otherwise, the Treasurer shall have full authority to invest such
funds and securities; to receive and give receipts for all money due and payable
to the Trust and to endorse checks, drafts, and warrants in its name and on its
behalf and to give full discharge for the same. The Treasurer shall deposit the
funds of the Trust, except such as may be invested or required for current use,
in such banks or other places of deposit as the Board of Trustees may from time
to time designate; and, in general, the Treasurer shall perform all duties
incident to the office of Treasurer and such other duties as may from time to
time be assigned to him or her by the Board of Trustees or the Chief Executive
Officer or the President.

                           Section 4.11. Assistant Treasurers. In the absence or
disability of the Treasurer or when so directed by the Treasurer, any Assistant
Treasurer may perform all the duties of the Treasurer, and, when so acting,
shall have all the powers of, and be subject to all the restrictions upon, the
Treasurer. The Assistant Treasurers shall perform such other duties as from time
to time may be assigned to them respectively by the Board of Trustees, the
President or the Treasurer.

                           Section 4.12. The Secretary. The Secretary shall
record all the votes of the shareholders and of the trustees and the minutes of
the meetings of the shareholders and of the Board of Trustees in a book or books
to be kept for that purpose and shall see that notices of meetings of the Board
and shareholders are given; and, in general, the Secretary shall perform all
duties incident to the office of Secretary, and such other duties as may from
time to time be assigned to him or her by the Board of Trustees or the
President.


                                       -9-



<PAGE>

                           Section 4.13. Assistant Secretaries. In the absence
or disability of the Secretary or when so directed by the Secretary, any
Assistant Secretary may perform all the duties of the Secretary, and, when so
acting, shall have all the powers of, and be subject to all the restrictions
upon, the Secretary. The Assistant Secretaries shall perform such other duties
as from time to time may be assigned to them respectively by the Board of
Trustees, the Chief Executive Officer, the President, or the Secretary.


                           Article 5. INDEMNIFICATION OF
                                      TRUSTEES AND OFFICERS

                           Section 5.01. Indemnification. The Trust shall
indemnify any person who was or is a party or is threatened to be made a party
to any threatened, pending or completed action or proceeding, including actions
by or in the right of the Trust, whether civil, criminal, administrative or
investigative, by reason of the fact that such person is or was a trustee or
officer of the Trust, or is or was serving while a trustee or officer of the
Trust at the request of the Trust as a trustee, officer, employee, agent,
fiduciary or other representative of another corporation for profit or
not-for-profit, partnership, joint venture, trust, employee benefit plan or
other enterprise, against expenses (including attorneys' fees), judgments,
fines, excise taxes and amounts paid in settlement actually and reasonably
incurred by such person in connection with such action or proceeding unless the
act or failure to act giving rise to the claim for indemnification is determined
by a court to have constituted willful misconduct or recklessness.

                           Section 5.02. Advancement of Expenses. Expenses
(including attorneys fees) incurred by an officer or trustee of the Trust in
defending any action or proceeding referred to in Section 5.01 shall be paid by
the Trust in advance of the final disposition of such action or proceeding upon
receipt of an undertaking by or on behalf of such person to repay such amount if
it shall ultimately be determined that the person is not entitled to be
indemnified by the Trust.

                           Section 5.03. Other Rights. No trustee shall be
personally liable for monetary damages for any action taken, or failure to take
any action, except to the extent set forth in Paragraph 5.B of the Trust
Agreement. The indemnification and advancement of expenses provided by or
pursuant to this Article shall not be deemed exclusive of any other rights to
which those seeking indemnification or advancement of expenses may be entitled
under the Trust Agreement, any insurance or other agreement, vote of
shareholders or trustees or otherwise, both as to actions in their official
capacity and as to actions in another capacity while holding an office, and
shall continue as to a person who has ceased to be a

                                      -10-



<PAGE>

trustee or officer and shall inure to the benefit of the heirs, executors and
administrators of such person.

                           Section 5.04. Security Fund; Indemnity Agreements. By
resolution of the Board of Trustees (notwithstanding their interest in the
transaction), the Trust may create and fund a trust fund or fund of any nature,
and may enter into agreements with its trustees, officers, employees and agents
for the purpose of securing or insuring in any manner its obligation to
indemnify or advance expenses provided for or authorized in this Article, the
Trust Agreement, or any applicable law.

                           Section 5.05. Modification. The duties of the Trust
to indemnify and to advance expenses to a trustee or officer provided in this
Article shall be in the nature of a contract between the Trust and each such
trustee or officer, and no amendment or repeal of any provision of this Article,
and no amendment or termination of any trust or other fund created pursuant to
Section 5.04, shall alter, to the detriment of such trustee or officer, the
right of such person to the advance of expenses or indemnification related to a
claim based on an act or failure to act which took place prior to such
amendment, repeal or termination.


                       Article 6. DEPOSITS, PROXIES, ETC.

                           Section 6.01. Deposits and Investments. All funds of
the Trust shall be deposited from time to time to the credit of the Trust in
such banks, trust companies, or other depositaries, or invested in such manner,
as may be authorized by these By-Laws or by the Board of Trustees and all such
funds shall be withdrawn only upon checks signed by, or wire transmissions
authorized by, and all such investments shall only be disposed of by, the Chief
Executive Officer, the President, the Chief Financial Officer, the Treasurer and
such other officers or employees as the Board of Trustees may from time to time
designate.

                           Section 6.02. Proxies. Unless otherwise ordered by
the Board of Trustees, any officer of the Trust may appoint an attorney or
attorneys (who may be or include such officer himself), in the name and on
behalf of the Trust, to cast the votes which the Trust may be entitled to cast
as a shareholder or partner or business trust or otherwise in any other
corporation, partnership, business trust or other entity any of whose shares or
other securities are held by or for the Trust, at meetings of the holders of the
shares or other securities of such other corporation or other entity, or, in
connection with the ownership of such shares or other securities, to consent in
writing to any action by such other corporation or other entity, and may
instruct the person or persons so appointed as to the manner of casting such
votes or giving such consent, and may execute or cause to be executed in the
name and on behalf of the Trust such written proxies or other instruments as he
may deem necessary or proper in the premises.

                                      -11-



<PAGE>

                           Section 6.03. Use of Conference Telephone Equipment.
One or more persons may participate in any meeting of the Board of Trustees or
any committee thereof or the shareholders by means of conference telephone or
similar communications equipment by means of which all persons participating in
the meeting can hear each other. Participation in a meeting by means of such
equipment shall constitute presence in person at such meeting.


                     Article 7. SHARE CERTIFICATES; TRANSFER

                           Section 7.01. Share Certificates. Share certificates,
in the form prescribed by the Board of Trustees, shall be signed by the
Chairman, the Chief Executive Officer, the President or a Vice President and by
the Secretary or the Treasurer or an Assistant Secretary or an Assistant
Treasurer of the Trust, but such signatures may be facsimiles, engraved or
printed. In case any officer who has signed, or whose facsimile signature has
been placed upon any share certificate shall have ceased to be such officer
because of death, resignation, or otherwise, before the certificate is issued,
it may be issued by the Trust with the same effect as if the officer had not
ceased to be such at the date of its issue.

                           Section 7.02. Transfer of Shares. The Trust or a
Registrar or Transfer Agent of the Trust shall maintain books in which the
ownership and transfer of the Trust's shares shall be definitively registered.
Transfer of share certificates and the shares represented thereby shall be made
only on the books of the Trust by the owner thereof or by his attorney thereunto
authorized, by a power of attorney duly executed and filed with the Secretary or
a Transfer Agent of the Trust and on surrender of the share certificates.

                           Section 7.03. Restrictions on Transfer. The
restrictions on transfer set forth in Paragraph 9 of the Trust Agreement shall
remain in effect unless and until terminated or modified by amendment of the
Trust Agreement or as otherwise provided for therein.

                           Section 7.04. Transfer Agent and Registrar;
Regulations. The Trust may, if and whenever the Board of Trustees so determines,
maintain, in the Commonwealth of Pennsylvania and/or any other state of the
United States, one or more transfer offices or agencies, each in charge of a
Transfer Agent designated by the Board of Trustees, where the shares of the
Trust shall be transferable, and also one or more registry offices, each in
charge of a Registrar (which may also be a Transfer Agent) designated by the
Board, where such shares shall be registered; and no certificates for shares of
the Trust in respect of which a Transfer Agent shall have been designated shall
be valid unless countersigned by such Transfer Agent and no certificates for
shares of the Trust in respect of which a Registrar shall have been designated
shall be valid unless registered by such Registrar. The Board of

                                      -12-



<PAGE>

Trustees may also make such additional rules and regulations as it may deem
expedient concerning the issue, transfer and registration of its shares.

                           Section 7.05. Lost, Destroyed and Mutilated
Certificates. The Board of Trustees, by standing resolution or by resolutions
with respect to particular cases, may authorize the issue of new share
certificates in lieu of share certificates lost, destroyed or mutilated, upon
such terms and conditions as the Board of Trustees may direct.


               Article 8. RELATION TO TRUST AGREEMENT; AMENDMENTS

                           Section 8.01. Relation to the Trust Agreement. These
By-Laws have been adopted by the Board of Trustees under the authority of
Paragraph 3.0 of the Trust Agreement. These By-Laws are subordinate to the Trust
Agreement in all respects and in the event of any conflict between the
provisions of these By-Laws and the provisions of the Trust Agreement, the
provisions of the Trust Agreement shall control.

                           Section 8.02. Amendments. Except as otherwise
provided by Section 5.05 of these By-Laws, these By-Laws may be amended or
repealed, or new By-Laws may be adopted, either (i) by vote of the shareholders
at any duly organized annual or special meeting of shareholders, or (ii) with
respect to those matters that are not by statute committed exclusively to the
shareholders and regardless of whether the shareholders have previously adopted
or approved the bylaw being amended or repealed, by the Board of Trustees. Any
change in these By-Laws shall take effect when adopted unless otherwise provided
in the resolution effecting the change. No provision of these By-Laws shall vest
any property right in any shareholder as such.


                                      -13-




<PAGE>


                                                                     EXHIBIT 5.1

                                   LAW OFFICES
                           DRINKER BIDDLE & REATH LLP
                       PHILADELPHIA NATIONAL BANK BUILDING
                              1345 CHESTNUT STREET
                           PHILADELPHIA, PA 19107-3496
                            TELEPHONE: (215) 988-2700
                                  TELEX: 834684
                               FAX: (215) 988-2757

Direct Dial Number:
                  (215) 988-2700


                                December 19, 1997



Pennsylvania Real Estate Investment Trust
455 Pennsylvania Avenue, Suite 135
Fort Washington, PA  19034

Ladies and Gentlemen:

                           We have acted as counsel to Pennsylvania Real Estate
Investment Trust, a Pennsylvania unincorporated association in business trust
form (the "Company"), in connection with a registration statement on Form S-3
(No. 33-61115, effective September 11, 1995) (as amended to the date hereof, the
"Registration Statement") filed with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), covering
$200,000,000 in aggregate public offering price of Debt Securities, Preferred
Shares, Shares of Beneficial Interest, $1.00 par value per share (the "Shares"),
Share Warrants and Shareholder Rights and in connection with the offering under
the Registration Statement, pursuant to a Prospectus and Prospectus Supplement
each dated December 17, 1997 and filed with the Commission pursuant to Rule
424(b)(5) under the Act on December 19, 1997 (collectively, the "Prospectus"),
of (i) 4,000,000 shares (the "Firm Shares") and, (ii) up to an additional
600,000 Shares which the underwriters will have the option to purchase solely
for the purpose of covering over-allotments (the "Option Shares"). All of the
Firm Shares and the



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Pennsylvania Real Estate Investment Trust
December 19, 1997
Page 2


Option Shares will be sold by the underwriters for whom Lehman Brothers Inc.,
Legg Mason Wood Walker, Incorporated, Merrill Lynch, Pierce, Fenner & Smith
Incorporated, Smith Barney Inc. and Wheat, First Securities, Inc. are acting as
representatives (collectively, the "Underwriters").

                           In this connection, we have examined the originals or
copies, certified or otherwise identified to our satisfaction, of the Trust
Agreement and By-laws of the Company as amended through the date hereof,
resolutions of the Company's Board of Trustees and such other documents and
corporate records relating to the Company and the issuance of the Firm Shares
and Option Shares as we have deemed appropriate for the purpose of rendering
this opinion. We express no opinion concerning the laws of any jurisdiction
other than the federal law of the United States and law of the Commonwealth of
Pennsylvania.

                           On the basis of the foregoing, it is our opinion that
(i) appropriate corporate action has been taken to authorize the sale and
issuance of the Firm Shares and the Option Shares, and (ii) when issued and sold
pursuant to the terms of the Underwriting Agreement, such Firm Shares and the
Option Shares will be validly issued, fully paid and nonassessable.

                           We hereby consent to the reference to our firm under
the caption "Legal Matters" in the Prospectus and to the filing of this opinion
as an exhibit to be incorporated by reference in the Registration Statement.
This does not constitute a consent under Section 7 of the Securities Act of
1933, as amended, as we have not certified any part of the Registration
Statement and do not otherwise come within the categories of persons whose
consent is required under Section 7 or the rules and regulations of the
Commission.


                                                Very truly yours,


                                                /s/ Drinker Biddle & Reath LLP
                                                --------------------------------
                                                DRINKER BIDDLE & REATH LLP




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