HRPT PROPERTIES TRUST
8-K, EX-1.1, 2000-07-27
REAL ESTATE INVESTMENT TRUSTS
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                                                                     EXHIBIT 1.1

                                   $30,000,000

                              HRPT Properties Trust

                          8.875% Senior Notes due 2010

                           FORM OF PURCHASE AGREEMENT



                                  July 25, 2000


DONALDSON, LUFKIN & JENRETTE
     SECURITIES CORPORATION
277 Park Avenue
New York, New York  10172

Dear Sirs:

         HRPT  Properties  Trust, a Maryland real estate  investment  trust (the
"Company"),  proposes  to issue  and sell  $30,000,000  principal  amount of its
8.875% Senior Notes due 2010 (the "Securities"), to Donaldson, Lufkin & Jenrette
Securities  Corporation  (the  "Underwriter").  The  Securities are to be issued
pursuant to the provisions of an Indenture  dated as of July 9, 1997 between the
Company and State Street Bank and Trust Company,  as Trustee (the "Trustee") and
a Supplemental Indenture to be dated as of July 31, 2000 between the Company and
the Trustee (collectively, the "Indenture").

         1. Registration Statement and Prospectus.  The Company has prepared and
filed  with  the  Securities  and  Exchange  Commission  (the  "Commission")  in
accordance  with the provisions of the  Securities Act of 1933, as amended,  and
the rules and regulations of the Commission thereunder  (collectively called the
"Act"), a registration  statement on Form S-3 (File No.  333-56051)  relating to
the  registration  of the  Securities  and such  other  securities  which may be
offered from time to time by the Company,  in accordance with Rule 415 under the
Act.  Such  registration  statement  (as amended,  if  applicable)  was declared
effective by the Commission on June 15, 1998.  Such  registration  statement (as
amended as of the date hereof) on the one hand, and the prospectus  constituting
a part  thereof and the  prospectus  supplement  relating to the offering of the
Securities  provided to the Underwriter by the Company in the form first used to
confirm sales of Securities (the  "Prospectus  Supplement"),  on the other hand,
including,  in each  case,  all  documents  incorporated  therein  by  reference
pursuant to Item 12 of Form S-3 under the Act,  as from time to time  amended or
supplemented  pursuant to the Act and the  Securities  Exchange Act of 1934,  as
amended,   and  the  rules  and   regulations  of  the   Commission   thereunder
(collectively  called  the  "Exchange  Act"),  are  referred  to  herein  as the
"Registration Statement" and the "Prospectus,"  respectively.  All references in
this Agreement to financial statements and schedules and other information which
is  "contained,"   "included,"  "described"  or  "stated"  in  the  Registration
Statement or the Prospectus (and all other similar


<PAGE>

references)  shall be deemed to mean and include all such  financial  statements
and schedules and other  information which is or is deemed to be incorporated by
reference in the Registration  Statement or the Prospectus,  as the case may be;
and all  references  in this  Agreement  to  amendments  or  supplements  to the
Registration  Statement or the  Prospectus  shall be deemed to mean and include,
without  limitation,  even though not  specifically  stated,  any document filed
under the Exchange Act which is or is deemed to be  incorporated by reference in
the Registration  Statement or the Prospectus,  as the case may be.  Capitalized
terms used but not  otherwise  defined  herein shall have the meanings  given to
those terms in the Prospectus.

         2. Agreements to Sell and Purchase. On the basis of the representations
and  warranties  contained  in this  Agreement,  and  subject  to its  terms and
conditions,  the Company agrees to issue and sell, and the Underwriter agrees to
purchase from the Company,  $30,000,000 aggregate principal amount of Securities
at 99.186% of the principal amount thereof (the "Purchase Price").

         3. Terms of Public Offering.  The Company is advised by the Underwriter
that the Underwriter proposes (i) to make a public offering of the Securities as
soon after  execution  and delivery of this  Agreement  as in the  Underwriter's
judgment is advisable and (ii) to offer the  Securities  at varying  prices from
time to time upon the terms set forth in the Prospectus.

         4.  Delivery  and  Payment.  The  Securities  shall be  represented  by
definitive certificates and shall be issued in such authorized denominations and
registered  in such names as the  Underwriter  shall  request not later than two
business  days prior to the Closing Date (as defined  below).  The Company shall
deliver  the  Securities  to  the  Underwriter  through  the  facilities  of The
Depository  Trust Company ("DTC"),  for the account of the Underwriter,  against
payment to the  Company of the  Purchase  Price  therefor  by wire  transfer  of
Federal or other funds immediately  available in New York City. The certificates
representing  the  Securities  shall be made  available for inspection not later
than 9:30 A.M.,  New York City time,  on the  business  day prior to the Closing
Date at the office of DTC or its designated custodian (the "Designated Office").
The time and date of delivery and payment for the Securities shall be 9:00 A.M.,
New York City  time,  on July 31,  2000 or such  other  time on the same or such
other date as the Underwriter  and the Company shall agree in writing.  The time
and  date of such  delivery  and  payment  are  hereinafter  referred  to as the
"Closing Date."

         The  documents  to be  delivered  on the Closing  Date on behalf of the
parties  hereto  pursuant to Section 8 of this  Agreement  shall be delivered at
such  place as the  Underwriter  shall  designate  and the  Securities  shall be
delivered at the Designated Office, all on the Closing Date.

         5.       Agreements of the Company.  The Company agrees with you:

                  (a) In respect of the offering of the Securities  contemplated
         hereby,  to (i)  prepare  a  Prospectus  Supplement  setting  forth the
         principal  amount and terms of the Securities  covered  thereby and the
         name of the Underwriter participating in the offering of the Securities
         and such other  information  as the  Underwriter  and the Company  deem
         appropriate  in connection  with the offering of the  Securities,  (ii)
         file the  Prospectus  (as  defined  herein to include  such  Prospectus
         Supplement)  in a form  approved by you

                                       2
<PAGE>

         pursuant to Rule 424 under the Act no later than the Commission's close
         of business on the second  business day  following  the date hereof and
         (iii) furnish copies of the Prospectus to the  Underwriter  and to such
         dealers as you shall specify as soon as  practicable  after the date of
         this Agreement in such quantities as you may reasonably request.

                  (b)  At  any  time  when  the  Prospectus  is  required  to be
         delivered under the Act or the Exchange Act in connection with sales of
         Securities, to advise you promptly and, if requested by you, to confirm
         such advice in writing,  of (i) the  effectiveness  of any amendment to
         the Registration Statement,  (ii) the transmittal to the Commission for
         filing of the  Prospectus  or any other  supplement or amendment to the
         Prospectus  required to be filed pursuant to the Act, (iii) the receipt
         of any  comments  from  the  Commission  relating  to the  Registration
         Statement,  the  Prospectus,   any  preliminary  prospectus  supplement
         relating to the  Securities,  the  Prospectus  Supplement or any of the
         transactions  contemplated by this  Agreement,  (iv) any request by the
         Commission for post-effective  amendments to the Registration Statement
         or  amendments  or  supplements  to the  Prospectus  or for  additional
         information,  (v) the  issuance  by the  Commission  of any stop  order
         suspending the  effectiveness of the  Registration  Statement or of the
         suspension of  qualification  of the Securities for offering or sale in
         any  jurisdiction,  or  the  initiation  of  any  proceeding  for  such
         purposes,  and  (vi) the  happening  of any  event  during  the  period
         referred  to in  paragraph  (e) below which  makes any  statement  of a
         material  fact made in the  Registration  Statement  or the  Prospectus
         untrue or which  requires the making of any  additions to or changes in
         the  Registration  Statement  or the  Prospectus  in  order to make the
         statements  therein  not  misleading.   The  Company  will  make  every
         reasonable  effort to prevent the  issuance of any stop order and if at
         any time the  Commission  shall  issue any stop  order  suspending  the
         effectiveness  of the  Registration  Statement,  the Company  will make
         every  reasonable  effort to obtain the  withdrawal  or lifting of such
         order at the earliest possible time.

                  (c) To furnish to you, without charge,  one signed copy of the
         Registration  Statement as first filed with the  Commission and of each
         amendment to it,  including  all exhibits  and  documents  incorporated
         therein by  reference,  and to furnish to you such number of  conformed
         copies of the Registration  Statement as so filed and of each amendment
         to it, without exhibits but including documents incorporated therein by
         reference, as you may reasonably request. If applicable,  the copies of
         the Registration  Statement and each amendment thereto furnished to the
         Underwriter will be identical to the electronically  transmitted copies
         thereof  filed with the  Commission  pursuant  to EDGAR,  except to the
         extent permitted by Regulation S-T, as promulgated by the Commission.

                  (d)  At  any  time  when  the  Prospectus  is  required  to be
         delivered under the Act or the Exchange Act in connection with sales of
         Securities,  not to file any amendment to the Registration Statement or
         any Rule 462(b)  Registration  Statement  or to make any  amendment  or
         supplement  to the  Prospectus of which you shall not  previously  have
         been  advised or to which you or  Milbank,  Tweed,  Hadley & McCloy LLP
         shall reasonably  object;  and to prepare and file with the Commission,
         promptly   upon  your   reasonable

                                       3
<PAGE>

         request, any amendment to the Registration  Statement,  any Rule 462(b)
         Registration Statement or any amendment or supplement to the Prospectus
         which may be necessary or advisable in connection with the distribution
         of the Securities by you, and to use its best efforts to cause the same
         to become  promptly  effective.  If applicable,  the Prospectus and any
         amendments or supplements  thereto furnished to the Underwriter will be
         identical to the  electronically  transmitted copies thereof filed with
         the  Commission  pursuant to EDGAR,  except to the extent  permitted by
         Regulation S-T, as promulgated by the Commission.

                  (e)  Prior to 10:00  A.M.,  New York City  time,  on the first
         business day after the date hereof and from time to time thereafter for
         such period as in the opinion of Milbank,  Tweed, Hadley & McCloy LLP a
         prospectus is required by law to be delivered in connection  with sales
         by the  Underwriter or a dealer,  to furnish to the Underwriter and any
         dealer  as many  copies  of the  Prospectus  (and of any  amendment  or
         supplement to the Prospectus) and any documents incorporated therein by
         reference as the Underwriter or such dealer may reasonably request.

                  (f) If,  during the period  specified in paragraph  (e) above,
         any event shall occur as a result of which,  in the opinion of Milbank,
         Tweed, Hadley & McCloy LLP, it becomes necessary to amend or supplement
         the Prospectus in order to make the statements therein, in the light of
         the  circumstances  existing  when the  Prospectus  is  delivered  to a
         purchaser, not misleading, or if it is necessary to amend or supplement
         the  Prospectus  to comply with any law,  forthwith to prepare and file
         with the  Commission  an  appropriate  amendment or  supplement  to the
         Prospectus so that the statements in the  Prospectus,  as so amended or
         supplemented,  will not in the light of the circumstances when it is so
         delivered,  be misleading,  or so that the Prospectus  will comply with
         applicable  law, and to furnish to the  Underwriter and to such dealers
         as you shall specify,  such number of copies thereof as the Underwriter
         or such dealers may reasonably request.

                  (g) Prior to any public  offering  of the  Securities,  (i) to
         cooperate  with you and  Milbank,  Tweed,  Hadley & McCloy LLP (or such
         other local counsel as may be designated by you) in connection with the
         registration or  qualification  of the Securities for offer and sale by
         the Underwriter and by dealers under the state securities,  Blue Sky or
         real estate  syndication laws of such jurisdictions as you may request,
         (ii) to continue such  qualification  in effect so long as required for
         distribution of the Securities,  (iii) to file such consents to service
         of process or other  documents  as may be  necessary in order to effect
         such  registration or qualification  and (iv) to cooperate with you and
         Milbank,  Tweed,  Hadley & McCloy LLP in connection  with the review of
         the  offering of the  Securities  contemplated  hereby by the  National
         Association of Securities Dealers, Inc. ("NASD").

                  (h) To make  generally  available  to the  Company's  security
         holders as soon as reasonably practicable but not later than sixty (60)
         days after the close of the period covered thereby (or ninety (90) days
         in the  event the  close of such  period is the close of the  Company's
         fiscal  year),  an  earnings  statement  (in  form  complying  with the
         provisions  of Rule 158  under the Act)  covering  a period of at least
         twelve  (12)  months  after  the

                                       4
<PAGE>

         effective  date  of  the  Registration   Statement  (but  in  no  event
         commencing  later than  ninety  (90) days after such date)  which shall
         satisfy the provisions of Section 11(a) of the Act, and, if required by
         Rule 158 of the Act, to file such  statement  as an exhibit to the next
         periodic  report required to be filed by the Company under the Exchange
         Act covering the period when such earnings statement is released.

                  (i) During  the  period of five  years  after the date of this
         Agreement,  (i) to mail as soon as reasonably practicable after the end
         of each fiscal year to the record holders of the Securities a financial
         report of the Company and its  subsidiaries,  if any, on a consolidated
         basis   (and  a  similar   financial   report  of  all   unconsolidated
         subsidiaries,  if  any),  all  such  financial  reports  to  include  a
         consolidated balance sheet, a consolidated  statement of operations,  a
         consolidated  statement of cash flows and a  consolidated  statement of
         shareholders'  equity  as of the  end  of and  for  such  fiscal  year,
         together  with  comparable  information  as of the  end of and  for the
         preceding year, certified by independent  certified public accountants,
         and (ii) to make generally  available as soon as practicable  after the
         end of each quarterly  period (except for the last quarterly  period of
         each fiscal year) to such holders,  a  consolidated  balance  sheet,  a
         consolidated  statement of operations and a  consolidated  statement of
         cash  flows  (and  similar  financial  reports  of  all  unconsolidated
         subsidiaries, if any) as of the end of and for such period, and for the
         period from the  beginning of such year to the close of such  quarterly
         period,  together with  comparable  information  for the  corresponding
         periods of the preceding year.

                  (j) During the period referred to in paragraph (i), to furnish
         to you as soon as  available  a copy of each  report or other  publicly
         available  information of the Company mailed to its security holders or
         filed with the Commission and such other publicly available information
         concerning  the  Company  and  its  subsidiaries,  if  any,  as you may
         reasonably request.

                  (k) During the period  when the  Prospectus  is required to be
         delivered under the Act or the Exchange Act in connection with sales of
         the Securities,  to file all documents  required to be filed by it with
         the  Commission  pursuant to Section 13, 14 or 15 of the  Exchange  Act
         within the time periods required by the Exchange Act.

                  (l) To pay (i) all costs, expenses, fees and taxes incident to
         the preparation, printing, filing and distribution under the Act of the
         Registration  Statement  (including financial statements and exhibits),
         if any, all documents  incorporated  or to be incorporated by reference
         therein,  and all amendments and supplements to any of them prior to or
         during  the  period  specified  in  paragraph  (e),  (ii) all costs and
         expenses  in   connection   with  the  printing  and  delivery  of  the
         Prospectus, and all amendments or supplements thereto during the period
         specified in paragraph (e), (iii) all costs and expenses related to the
         transfer and delivery of the Securities to the  Underwriter,  including
         any  transfer  or other taxes  payable  thereon,  (iv) all  expenses in
         connection with the registration or qualification of the Securities for
         offer  and  sale  under  the  securities,   Blue  Sky  or  real  estate
         syndication laws of the several states (including in each case the fees
         and  disbursements  of  counsel  for the  Company  or  counsel  for the
         Underwriter   relating  to  such   registration  or  qualification  and
         memoranda  relating  thereto),  (v) all

                                       5
<PAGE>

         filing  fees  paid to the  NASD  in  connection  with  the  review  and
         clearance of the offering of the Securities  contemplated  hereby, (vi)
         the cost of furnishing such copies of the Registration  Statement,  the
         Prospectus  and  all  amendments  and  supplements  thereto  as  may be
         requested  for  use in  connection  with  the  offering  or sale of the
         Securities by the  Underwriter or by dealers to whom  Securities may be
         sold, (vii) the costs and charges of any transfer agent,  registrar and
         or  depositary,  including  DTC,  (viii)  any fees  charged  by  rating
         agencies  for the  rating  of the  Securities  and  (ix)  the  fees and
         expenses of the Trustee and the Trustee's  counsel in  connection  with
         the Indenture and the Securities.

                  (m) To use its best  efforts  to  qualify  for the year  ended
         December 31, 2000 and to continue to meet the  requirements  to qualify
         as a real estate  investment  trust ("REIT") under the Internal Revenue
         Code of 1986, as amended (the "Code").

                  (n) To apply the net  proceeds of the  offering of  Securities
         contemplated  hereby  substantially  in accordance with the description
         set forth under the caption "Use of Proceeds" in the Prospectus.

                  (o) To use its  best  efforts  to do and  perform  all  things
         required or necessary to be done and performed  under this Agreement by
         the  Company  prior to the Closing  Date and to satisfy all  conditions
         precedent to the delivery of the Securities.

                  (p)  During  the  period  beginning  on the  date  hereof  and
         continuing  to and  including  the Closing  Date,  not to offer,  sell,
         contract  to  sell  or  otherwise  transfer  or  dispose  of  any  debt
         securities  of the  Company  or any  warrants,  rights  or  options  to
         purchase  or  otherwise   acquire  debt   securities   of  the  Company
         substantially  similar to the Securities (other than (i) the Securities
         and (ii)  commercial  paper issued in the ordinary course of business),
         without the prior written consent of the Underwriter.

                  (q) Not to  voluntarily  claim,  and to  actively  resist  any
         attempts to claim, the benefit of any usury laws against the holders of
         the Securities.

         6. Representations and Warranties.  The Company represents and warrants
to the Underwriter that:

                  (a) The Company meets the  requirement for use of Form S-3 and
         the  Registration  Statement has been prepared by the Company under the
         provisions of the Act and has been filed with and declared effective by
         the Commission.

                  (b) The  Registration  Statement has become  effective  (other
         than any Rule 462(b) Registration  Statement to be filed by the Company
         after  the  effectiveness  of  this  Agreement);   and  no  stop  order
         suspending  the  effectiveness  of  the  Registration  Statement  is in
         effect,  and no  proceedings  for such  purpose are  pending  before or
         threatened by the Commission.

                  (c) (i) Each  document,  if any, filed or to be filed pursuant
         to the Exchange Act and  incorporated  by reference in the  Prospectus,
         complied or will comply when so filed in all material respects with the
         Exchange Act, (ii) the Registration Statement, when it

                                       6
<PAGE>

         initially became effective and as of the date hereof, respectively, did
         not contain any untrue  statement of a material fact or omit to state a
         material  fact  required to be stated  therein or necessary to make the
         statement therein not misleading,  (iii) the Registration Statement and
         the Prospectus  comply and, as amended or supplemented,  if applicable,
         will  comply  in all  material  respects  with  the  Act and  (iv)  the
         Prospectus does not contain any untrue  statement of a material fact or
         omit to state a material fact necessary to make the statements therein,
         in the light of the  circumstances  under  which  they were  made,  not
         misleading, except that the representations and warranties set forth in
         this  paragraph  (c) do not apply to  statements  or  omissions  in the
         Registration   Statement  or  the  Prospectus  based  upon  information
         relating to the Underwriter  furnished to the Company in writing by the
         Underwriter expressly for use therein.

                  (d) The  Company is a Maryland  real estate  investment  trust
         duly organized, validly existing and in good standing under the laws of
         the State of Maryland. Each of its subsidiaries has been duly organized
         and is validly  existing  as a  corporation  or trust in good  standing
         under the laws of its  jurisdiction of  incorporation  or organization.
         Each of the Company and its  subsidiaries  has full power and authority
         (corporate  and other) to carry on its  business  as  described  in the
         Registration  Statement  and in the  Prospectus  and to own,  lease and
         operate its  properties.  Each of the Company and its  subsidiaries  is
         duly  qualified  and is in good  standing as a foreign  corporation  or
         trust,  as the case may be, and is  authorized  to do  business in each
         jurisdiction  in which the nature of its  business or its  ownership or
         leasing of  property  requires  such  qualification,  except  where the
         failure to be so qualified would not have a material  adverse effect on
         the Company and its subsidiaries, taken as a whole.

                  (e)  The   financial   statements   of  the  Company  and  its
         subsidiaries,  together with the related  schedules and notes  thereto,
         included or incorporated by reference in the Registration Statement and
         in the Prospectus,  comply as to form in all material respects with the
         requirements  of the Act.  Such  financial  statements  of the Company,
         together with the related  schedules and notes thereto,  present fairly
         the   consolidated   financial   position,   results   of   operations,
         shareholders'  equity and changes in financial  position of the Company
         and its subsidiaries, at the dates or for the periods therein specified
         and have been prepared in accordance with generally accepted accounting
         principles  ("GAAP")   consistently   applied  throughout  the  periods
         involved.  The pro  forma  financial  statements  and  other  pro forma
         financial  information   (including  the  notes  thereto)  included  or
         incorporated  by reference  in the  Registration  Statement  and in the
         Prospectus (i) present fairly the information shown therein,  (ii) have
         been prepared in accordance with the Commission's  rules and guidelines
         with  respect  to pro forma  financial  statements  and (iii) have been
         properly  compiled on the basis  described  therein and the

                                       7
<PAGE>

         assumptions  used  in the  preparation  of  such  pro  forma  financial
         statements  and other pro forma  financial  information  (including the
         notes  thereto) are  reasonable  and the  adjustments  used therein are
         appropriate  to  give  effect  to  the  transactions  or  circumstances
         referred to therein.  The adjusted pro forma  financial  statements and
         other  adjusted pro forma  financial  information  (including the notes
         thereto)  included or  incorporated  by reference  in the  Registration
         Statement  and in the  Prospectus  (i) present  fairly the  information
         shown  therein  and (ii)  have  been  properly  compiled  on the  basis
         described  therein and the assumptions  used in the preparation of such
         adjusted pro forma  financial  statements  and other adjusted pro forma
         financial information  (including notes thereto) are reasonable and the
         adjustments  used  therein  are  appropriate  to  give  effect  to  the
         transactions or circumstances referred to therein.

                  (f)  The   accountants   who  have   certified  the  financial
         statements of the Company and its subsidiaries included or incorporated
         by reference in the  Registration  Statement and in the  Prospectus are
         independent certified public accountants as required by the Act.

                  (g) The  Indenture  has been  duly  qualified  under the Trust
         Indenture Act of 1939, as amended (the "Trust  Indenture Act"), and has
         been duly  authorized,  executed and  delivered by the Company and is a
         valid and binding  agreement of the Company,  enforceable in accordance
         with its terms except as (i) the enforceability  thereof may be limited
         by bankruptcy,  insolvency or similar laws affecting  creditors' rights
         generally  and (ii)  rights of  acceleration  and the  availability  of
         equitable  remedies may be limited by equitable  principles  of general
         applicability.

                  (h) All of the  issued  and  outstanding  indebtedness  of the
         Company is duly and validly  authorized and issued; the Securities have
         been duly  authorized  and, on the Closing Date, will have been validly
         executed and delivered by the Company.  When the  Securities  have been
         executed and  authenticated  in accordance  with the  provisions of the
         Indenture  and  delivered  to  and  paid  for  by  the  Underwriter  in
         accordance  with the terms of this  Agreement,  the Securities  will be
         entitled to the benefits of the Indenture and will be valid and binding
         obligations of the Company,  enforceable in accordance with their terms
         except as (i) the enforceability  thereof may be limited by bankruptcy,
         insolvency or similar laws affecting  creditors'  rights  generally and
         (ii) rights of acceleration and the availability of equitable  remedies
         may be limited by equitable principles of general applicability.

                  (i) The  authorized  capital  of the  Company,  including  the
         Securities,  conforms as to legal  matters to the  description  thereof
         contained in the Prospectus (or the documents  incorporated  therein by
         reference).

                  (j)  Since the  respective  dates as of which  information  is
         given in the Prospectus, and except as otherwise disclosed therein, (i)
         there has been no material adverse change in the business,  operations,
         earnings,  prospects,  properties or condition (financial or otherwise)
         of the Company and its subsidiaries,  taken as a whole,  whether or not
         arising in the  ordinary  course of  business,  (ii) there have been no
         material transactions entered into by the Company and its subsidiaries,
         on a consolidated basis, other than transactions in the ordinary course
         of business,  (iii) neither the Company nor any of its subsidiaries has
         incurred any material liabilities or obligations, direct or contingent,
         (iv) the Company and its  subsidiaries,  on a consolidated  basis, have
         not, (A) other than regular quarterly dividends, declared, paid or made
         a dividend  or  distribution  of any kind on any class of its shares of
         beneficial  interest (other than dividends or distributions from wholly
         owned subsidiaries to the Company), (B) issued any shares of

                                       8
<PAGE>

         beneficial  interest of the Company or any of its  subsidiaries  or any
         options,  warrants,  convertible securities or other rights to purchase
         the  shares  of  beneficial  interest  of  the  Company  or  any of its
         subsidiaries  (other than the issuance of common  shares of  beneficial
         interest  ("Common  Shares")  upon  conversion  of certain  convertible
         debentures  of the  Company  or the  issuance  of Common  Shares to the
         trustees  and  officers  of  the  Company  pursuant  to  the  Company's
         Incentive  Share Award Plan) or (C)  repurchased or redeemed  shares of
         beneficial  interest,  and (v)  there  has not  been  (A) any  material
         decrease in the Company's net worth or (B) any material increase in the
         short-term or long-term debt (including  capitalized  lease obligations
         but excluding  borrowings  under  existing bank lines of credit) of the
         Company and its subsidiaries, on a consolidated basis.

                  (k) The  Company  and  each of its  subsidiaries  maintains  a
         system of internal accounting controls sufficient to provide reasonable
         assurance  that  (i)  transactions  are  executed  in  accordance  with
         management's general or specific authorizations;  (ii) transactions are
         recorded as necessary to permit preparation of financial  statements in
         conformity with GAAP and to maintain asset accountability; (iii) access
         to assets is permitted only in accordance with management's  general or
         specific authorization; and (iv) the recorded accountability for assets
         is  compared  with the  existing  assets at  reasonable  intervals  and
         appropriate action is taken with respect to any differences.

                  (l)  Neither the  Company  nor any of its  subsidiaries  is in
         violation of its respective charter or by-laws or other  organizational
         documents or in default in the performance of any obligation, agreement
         or  condition  contained  in any  bond,  debenture,  note or any  other
         evidence  of  indebtedness  or in any  other  agreement,  indenture  or
         instrument to which the Company or any of its  subsidiaries  is a party
         or by which any of their  respective  properties or assets may be bound
         or  affected,  except  for any such  violation  that  would  not have a
         material adverse effect on the condition,  financial or otherwise or in
         the earnings, business affairs or business prospects of the Company and
         its subsidiaries,  taken as a whole. The Company is not in violation of
         any law, ordinance,  governmental rule or regulation or court decree to
         which it is  subject,  except for any such  violations  that would not,
         individually or in the aggregate, have a material adverse effect on the
         business,  operations,  earnings,  prospects,  properties  or condition
         (financial or  otherwise)  of any of the Company and its  subsidiaries,
         taken as a whole.

                  (m) Except as  disclosed in the  Registration  Statement or in
         the  Prospectus,  there is not now pending or, to the  knowledge of the
         Company,  threatened,  any  litigation,  action,  suit or proceeding to
         which  the  Company  is or will be a party  before  or by any  court or
         governmental  agency or body,  which (A) might  result in any  material
         adverse  change in the  condition,  financial or  otherwise,  or in the
         earnings,  business affairs or business prospects of the Company or (B)
         might  materially  and  adversely  affect the property or assets of the
         Company or (C)  concerns the Company and is required to be disclosed in
         the  Registration  Statement or the Prospectus,  or (D) could adversely
         affect the  consummation  of this Agreement and the issuance,  purchase
         and sale of the  Securities.  No contract or other document is required
         to be described in the  Registration  Statement or in the Prospectus or
         to be filed as an exhibit  to the  Registration  Statement

                                       9
<PAGE>

         that is not described therein or filed as required.

                  (n) The execution,  delivery and performance by the Company of
         this Agreement,  the issuance,  offering and sale by the Company of the
         Securities as  contemplated  by the  Registration  Statement and by the
         Prospectus and the consummation of the transactions contemplated hereby
         and compliance with the terms and provisions  hereof,  will not violate
         or  conflict  with  or  constitute  a  breach  of any of the  terms  or
         provisions  of,  or a  default  under,  (i) the  Amended  and  Restated
         Declaration of Trust (the "Declaration of Trust") or the By-laws of the
         Company or the charter or by-laws or other organizational  documents of
         any subsidiaries of the Company, (ii) any agreement, indenture or other
         instrument to which the Company or any of its  subsidiaries  is a party
         or by which the Company or any of its  subsidiaries or their respective
         properties  or  assets is  bound,  or (iii)  any  laws,  administrative
         regulations  or rulings  or decrees to which the  Company or any of its
         subsidiaries or their respective properties or assets may be subject.

                  (o) No  consent,  approval,  authorization  or  order  of,  or
         registration,  filing or qualification  with, any governmental  body or
         regulatory  agency having  jurisdiction  over the Company or any of its
         subsidiaries  or  any of  their  respective  properties  or  assets  is
         required for the execution,  delivery and performance of this Agreement
         and  the   consummation  of  the  transactions   contemplated   hereby,
         including,  without limitation,  the issuance, sale and delivery of the
         Securities  pursuant  to this  Agreement,  except  such  as  have  been
         obtained and such as may be required under foreign and state securities
         or "Blue Sky" or real estate syndication laws.

                  (p)  Except  as  otherwise   disclosed  in  the   Registration
         Statement  or  in  the   Prospectus,   the  Company  and  each  of  its
         subsidiaries has good and marketable  title or ground leases,  free and
         clear of all liens, claims, encumbrances and restrictions, except liens
         for taxes not yet due and  payable  and  other  liens and  encumbrances
         which do not, either  individually or in the aggregate,  materially and
         adversely affect the current use or value thereof,  to all property and
         assets described in the Registration  Statement or in the Prospectus as
         being owned by them.  Except as otherwise set forth in the Registration
         Statement  or in the  Prospectus,  all leases to which the  Company and
         each of its subsidiaries is a party relating to real property,  and all
         other  leases which are material to the business of the Company and its
         subsidiaries,  taken as a whole, are valid and binding,  and no default
         (to the Company's knowledge, in the case of leases to which the Company
         is a party as lessor,  that would,  individually  or in the  aggregate,
         have a material adverse effect on the business,  operations,  earnings,
         prospects,  properties  or condition  (financial  or  otherwise) of the
         Company and its  subsidiaries,  taken as a whole) has  occurred  and is
         continuing  thereunder,  and the Company  and each of its  subsidiaries
         enjoys  peaceful and  undisturbed  possession  under all such leases to
         which it is a party as lessee.  With respect to all properties owned or
         leased by the Company and each of its subsidiaries, the Company or such
         subsidiary has such documents, instruments,  certificates, opinions and
         assurances,  including  without  limitation,  fee,  leasehold owners or
         mortgage title insurance policies  (disclosing no encumbrances or title
         exceptions  which are  material  to the  Company  and its  subsidiaries
         considered   as  a  whole,   except  as  otherwise  set  forth  in  the
         Registration  Statement  and in the  Prospectus),  legal  opinions  and
         property  insurance

                                       10
<PAGE>

         policies in each case in form and  substance as are usual and customary
         in  transactions  involving the purchase of similar real estate and are
         appropriate for the Company or such subsidiary to have obtained.
                  (q)  The  Company  and  each  of  its  subsidiaries  owns,  or
         possesses adequate rights to use, all patents, trademarks, trade names,
         service marks, copyrights,  licenses and other rights necessary for the
         conduct of their respective businesses as described in the Registration
         Statement and in the Prospectus, and neither the Company nor any of its
         subsidiaries  has received any notice of conflict with, or infringement
         of, the  asserted  rights of others with  respect to any such  patents,
         trademarks, trade names, service marks, copyrights,  licenses and other
         such rights  (other than  conflicts or  infringements  that, if proven,
         would not have a material  adverse effect on the business,  operations,
         earnings,  prospects,  properties or condition (financial or otherwise)
         of the Company and its subsidiaries, taken as a whole), and neither the
         Company nor any of its subsidiaries knows of any basis therefor.

                  (r) All  material  tax  returns  required  to be  filed by the
         Company  and each of its  subsidiaries  in any  jurisdiction  have been
         timely filed,  other than those filings being  contested in good faith,
         and all material  taxes,  including  withholding  taxes,  penalties and
         interest,  assessments,  fees and other  charges  due  pursuant to such
         returns or pursuant to any assessment received by the Company or any of
         its  subsidiaries  have been paid,  other than those being contested in
         good faith and for which adequate reserves have been provided.

                  (s) Except for those  matters  which in the  aggregate  do not
         have a material adverse effect on the business,  operations,  earnings,
         prospects,  properties  or condition  (financial  or  otherwise) of the
         Company and its subsidiaries taken as a whole, and except for Hazardous
         Materials  (as defined  below) or substances  which are handled  and/or
         disposed of in compliance with all applicable federal,  state and local
         requirements, to the Company's knowledge, after due investigation,  the
         real property  owned,  leased or otherwise  operated by the Company and
         each of its  subsidiaries  in  connection  with the  operation of their
         respective businesses,  including,  without limitation,  any subsurface
         soils and ground water (the "Realty"),  is free of  contamination  from
         any  Hazardous  Materials.  To  the  Company's  knowledge,   after  due
         investigation,  the Realty does not contain any underground  storage or
         treatment  tanks,  active or abandoned  water, gas or oil wells, or any
         other   underground   improvements   or  structures,   other  than  the
         foundations,  footings,  or other supports for the improvements located
         thereon  which,  based on present  knowledge,  could,  in their present
         condition,  reasonably  be  expected  to  presently  cause  a  material
         detriment to or  materially  impair the  beneficial  use thereof by the
         Company or constitute or cause a  significant  health,  safety or other
         environmental  hazard to occupants or users thereof  without  regard to
         any  special  conditions  of  such  occupants  or  users.  The  Company
         represents  that, after due  investigation,  it has no knowledge of any
         material  violation,  with respect to the Realty,  of any Environmental
         Law,  or of any  material  liability  on the part of the  Company  with
         respect to the  Realty,  resulting  from the  presence,  use,  release,
         threatened release, emission, disposal, pumping, discharge,  generation
         or   processing   of  any   Hazardous   Materials.   As  used   herein,
         "Environmental

                                       11
<PAGE>

         Law" means any federal, state or local statute,  regulation,  judgment,
         order or authorization relating to emissions,  discharges,  releases or
         threatened  releases of Hazardous  Materials into ambient air,  surface
         water, ground water,  publicly-owned treatment works, septic systems or
         land,  or otherwise  relating to the  pollution or protection of public
         health  or  the  environment,   and  "Hazardous  Materials"  means  any
         substance,  material or waste which is regulated, defined, or listed as
         a "hazardous waste", "hazardous substance", "toxic substance", "medical
         waste",  "infectious waste" or other similar terms in any Environmental
         Law or by any federal,  state or local  government or  quasi-government
         authority,  or any  petroleum  products,  asbestos,  lead-based  paint,
         polychlorinated   biphenyls,   flammable   explosives  or   radioactive
         materials.

                  (t) Each of the Company and its subsidiaries has such permits,
         licenses,  franchises and  authorizations of governmental or regulatory
         authorities (together, "permits"), including, without limitation, under
         any  applicable  Environmental  Law, as are necessary to own, lease and
         operate  its  properties  and  to  engage  in  the  business  currently
         conducted  by it,  except  such  licenses  and  permits as to which the
         failure to own or  possess  will not in the  aggregate  have a material
         adverse  effect  on  the  business,  operations,  earnings,  prospects,
         properties or condition  (financial  or otherwise) of the Company,  and
         the Company does not have any reason to believe  that any  governmental
         body or agency is considering limiting, suspending or revoking any such
         license,  certificate,  permit,  authorization,  approval, franchise or
         right;  each of the  Company and its  subsidiaries  has  fulfilled  and
         performed all of its material obligations with respect to such permits,
         and no event has  occurred  which  allows,  or after notice or lapse of
         time would allow,  revocation or termination  thereof or results in any
         other  material  impairment  of the  rights  of the  holder of any such
         permit;  and, except as described in the Registration  Statement and in
         the  Prospectus,   such  permits  contain  no  restrictions   that  are
         materially burdensome to the Company or any of its subsidiaries.

                  (u) To the knowledge of the Company,  no labor problem  exists
         or is imminent with employees of the Company or any of its subsidiaries
         that could have a material adverse effect on the business,  operations,
         earnings,  prospects,  properties or condition (financial or otherwise)
         of the Company and its subsidiaries, taken as a whole.

                  (v) Neither the  Company nor any of its  subsidiaries  nor, to
         the  knowledge  of  the  Company,  any  officer,  trustee  or  director
         purporting to act on behalf of the Company or any of its  subsidiaries,
         has at any  time:  (i)  made any  contributions  to any  candidate  for
         political office,  or failed to disclose fully any such  contributions,
         in violation of law;  (ii) made any payment of funds to, or received or
         retained  any funds from,  any state,  federal or foreign  governmental
         officer or  official,  or other person  charged with similar  public or
         quasi-public  duties,  other  than  payments  required  or  allowed  by
         applicable  law; or (iii) engaged in any  transactions,  maintained any
         bank accounts or used any corporate funds except for transactions, bank
         accounts and funds,  which have been and are  reflected in the normally
         maintained books and records of the Company and its subsidiaries.

                  (w) All of the outstanding  shares of beneficial  interest of,
         or other  ownership  interests in, each of the  Company's  subsidiaries
         have been duly  authorized  and validly

                                       12
<PAGE>

         issued  and are fully  paid and,  except  as to  subsidiaries  that are
         partnerships,   nonassessable,   and,   except  as   disclosed  in  the
         Registration  Statement or in the  Prospectus,  are or will be owned by
         the  Company  free and clear of any  security  interest,  claim,  lien,
         encumbrance or adverse interest of any nature.

                  (x) Except as referred  to or  described  in the  Registration
         Statement  and in the  Prospectus,  none  of  the  subsidiaries  of the
         Company  owns  any  shares  of  stock or any  other  securities  of any
         corporation  or has  any  equity  interest  in any  firm,  partnership,
         association or other entity other than the issued capital shares of its
         subsidiaries, and the Company does not own, directly or indirectly, any
         shares of stock or any other  securities of any corporation or have any
         equity interest in any firm,  partnership,  association or other entity
         other than the issued  capital  shares of its  subsidiaries,  except in
         each case for non-controlling positions acquired in the ordinary course
         of business.

                  (y) Except as disclosed in the  Registration  Statement and in
         the Prospectus,  there are no material outstanding loans or advances or
         material  guarantees  of  indebtedness  by  the  Company  or any of its
         subsidiaries to or for the benefit of any of the officers,  trustees or
         directors  of the  Company  or any  of its  subsidiaries  or any of the
         members of the families of any of them.

                  (z)  The  Company  and  each  of  its  subsidiaries  maintains
         insurance,  duly  in  force,  with  insurers  of  recognized  financial
         responsibility; such insurance insures against such losses and risks as
         are adequate in accordance with customary  industry practice to protect
         the Company and its subsidiaries and their respective  businesses;  and
         neither the Company nor any such  subsidiary  has any reason to believe
         that it will not be able to renew its  existing  insurance  coverage as
         and when such  coverage  expires  or to obtain  similar  coverage  from
         similar insurers as may be necessary to continue its business at a cost
         that  would  not   materially   and  adversely   affect  the  business,
         operations,  earnings, prospects, properties or condition (financial or
         otherwise)  of the  Company  and its  subsidiaries,  taken  as a whole,
         except as disclosed in or  contemplated by the  Registration  Statement
         and by the Prospectus.

                  (aa) Neither the Company nor any of its officers and directors
         (as  defined  in the  1933 Act  Regulations)  has  taken or will  take,
         directly  or  indirectly,  prior  to the  termination  of the  offering
         contemplated  by this  Agreement,  any action  designed to stabilize or
         manipulate  the  price of any  security  of the  Company,  or which has
         caused or  resulted  in, or which  might in the  future  reasonably  be
         expected to cause or result in,  stabilization  or  manipulation of the
         price of any security of the Company to  facilitate  the sale or resale
         of the Notes.

                  (bb)  Neither the Company  nor any of its  subsidiaries  is an
         "investment  company" or an  "affiliated  person" of, or  "promoter" or
         "principal  underwriter" for, an "investment company" as such terms are
         defined in the  Investment  Company Act of 1940,  as amended (the "1940
         Act"),  or an  "investment  adviser"  as such  term is  defined  in the
         Investment Advisers Act of 1940, as amended.

                                       13
<PAGE>

                  (cc)  The  Company  is  organized  in   conformity   with  the
         requirements for qualification,  and, as of the date hereof the Company
         operates,  and as of Closing Time the Company will operate, in a manner
         that  qualifies the Company as a "real estate  investment  trust" under
         the Internal  Revenue Code of 1986,  as amended (the  "Code"),  and the
         rules and regulations  thereunder,  for 2000 and subsequent  years. The
         Company  qualified as a real estate investment trust under the Code for
         each of its taxable years from 1987 through 1999.

                  (dd) No default exists,  and no event has occurred which, with
         notice or lapse of time or both,  would constitute a default in the due
         performance  and  observance of any term,  covenant or condition of any
         indenture,  mortgage,  deed of  trust,  lease  or  other  agreement  or
         instrument to which the Company or any of its  subsidiaries  is a party
         or by which  the  Company  or any of its  subsidiaries  or any of their
         respective properties is bound or may be affected, except such defaults
         which,  singly or in the aggregate,  would not have a material  adverse
         effect on the business, operations,  earnings, prospects, properties or
         condition (financial or otherwise) of the Company and its subsidiaries,
         considered  as  a  whole,  except  as  disclosed  in  the  Registration
         Statement and in the Prospectus.

                  (ee) Except as otherwise  disclosed in the  Prospectus,  since
         the  respective  dates  as  of  which   information  is  given  in  the
         Prospectus,  there has been no material adverse change in the business,
         operations,  earnings, prospects, properties or condition (financial or
         otherwise) of REIT Management & Research, Inc. (the "Advisor"), whether
         or not arising in the ordinary  course of  business,  that would have a
         material adverse effect on the Company and its subsidiaries, taken as a
         whole.  The  Advisory  Agreement,  dated as of  [January  1, 1998] (the
         "Advisory  Agreement"),  between the Company and the Advisor,  has been
         duly  authorized,  executed and  delivered  by the parties  thereto and
         constitutes the valid agreement of the parties thereto,  enforceable in
         accordance  with its  terms,  except as  limited  by (a) the  effect of
         bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer
         or other  similar laws  relating to or affecting the rights or remedies
         of  creditors  or (b)  the  effect  of  general  principles  of  equity
         (regardless of whether  enforcement is sought in a proceeding in equity
         or at law).

                  (ff) This  Agreement  has been duly  authorized,  executed and
         delivered by the Company and constitutes a valid and binding  agreement
         of the Company,  enforceable  against it in accordance  with its terms,
         except as the  enforceability  thereof  may be  limited  by  applicable
         bankruptcy,   insolvency,   reorganization,    fraudulent   conveyance,
         moratorium  and other laws affecting the  enforceability  of creditor's
         rights and general principles of equity.

                  (gg)  Except as  otherwise  disclosed  in the  Prospectus,  no
         "nationally recognized statistical rating organization" as such term is
         defined for purposes of Rule  436(g)(2)  under the Act has indicated to
         the Company that it is considering (i) the  downgrading,  suspension or
         withdrawal  of,  or any  review  for a  possible  change  that does not
         indicate the direction of the possible  change in, any rating  assigned
         to the Company or any

                                       14
<PAGE>

         securities  of the  Company or (ii) any change in the  outlook  for any
         rating of the Company or any securities of the Company.

         7.  Indemnification.  (a) The  Company  agrees  to  indemnify  and hold
harmless the Underwriter  and each person,  if any, who controls the Underwriter
within the meaning of Section 15 of the Act or Section 20 of the  Exchange  Act,
from and against any and all losses, claims, damages,  liabilities and judgments
caused by any untrue  statement or alleged  untrue  statement of a material fact
contained  in the  Registration  Statement  or the  Prospectus  (as  amended  or
supplemented  if the Company shall have  furnished any amendments or supplements
thereto) or any  preliminary  prospectus,  or caused by any  omission or alleged
omission  to state  therein a material  fact  required  to be stated  therein or
necessary to make the statements therein not misleading,  except insofar as such
losses, claims, damages,  liabilities or judgments are caused by any such untrue
statement  or  omission  or alleged  untrue  statement  or  omission  based upon
information  relating to the Underwriter  furnished in writing to the Company by
or on behalf of the  Underwriter  expressly  for use therein;  provided that the
foregoing  indemnity with respect to any preliminary  prospectus shall not inure
to the benefit of the Underwriter  (or to the benefit of any person  controlling
the  Underwriter)  from  whom the  person  asserting  any such  losses,  claims,
damages,  liabilities  or  judgments  purchased  the  Securities  if such untrue
statement  or  omission or alleged  untrue  statement  or omission  made in such
preliminary prospectus is eliminated or remedied in the Prospectus and a copy of
the  Prospectus  shall not have been furnished to such person at or prior to the
written confirmation of the sale of such Securities to such person.

         (b) In case any action shall be brought  against the Underwriter or any
person controlling the Underwriter,  based upon any preliminary prospectus,  the
Registration  Statement or the Prospectus or any amendment or supplement thereto
and with  respect to which  indemnity  may be sought  against the  Company,  the
Underwriter  shall promptly  notify the Company in writing and the Company shall
assume the defense  thereof,  including  the  employment  of counsel  reasonably
satisfactory to such indemnified party and payment of all fees and expenses. The
Underwriter  or any such  controlling  person  shall  have the  right to  employ
separate counsel in any such action and participate in the defense thereof,  but
the fees and expenses of such counsel shall be at the expense of the Underwriter
or such controlling  person unless (i) the employment of such counsel shall have
been specifically  authorized in writing by the Company,  (ii) the Company shall
have failed to assume the defense and employ  counsel or (iii) the named parties
to  any  such  action  (including  any  impleaded   parties)  include  both  the
Underwriter or such  controlling  person and the Company and the  Underwriter or
such  controlling  person shall have been advised by such counsel that there may
be one or more  legal  defenses  available  to it which  are  different  from or
additional  to those  available to the Company (in which case the Company  shall
not have the  right to  assume  the  defense  of such  action  on  behalf of the
Underwriter or such controlling person, it being understood,  however,  that the
Company  shall not,  in  connection  with any one such  action or  separate  but
substantially similar or related actions in the same jurisdiction arising out of
the same  general  allegations  or  circumstances,  be  liable  for the fees and
expenses of more than one separate  firm of attorneys  (in addition to any local
counsel)  for the  Underwriter  and  controlling  persons,  which  firm shall be
designated in writing by Donaldson, Lufkin & Jenrette Securities Corporation and
that all such fees and expenses shall be reimbursed as they are  incurred).  The
Company  shall not be liable  for any  settlement  of any such  action  effected
without its  written  consent  but if settled  with the  written  consent of the

                                       15
<PAGE>

Company,  the Company agrees to indemnify and hold harmless the  Underwriter and
any such controlling  person from and against any loss or liability by reason of
such settlement.  Notwithstanding the immediately  preceding sentence, if in any
case  where  the  fees  and  expenses  of  counsel  are  at the  expense  of the
indemnifying   party  and  an   indemnified   party  shall  have  requested  the
indemnifying party to reimburse the indemnified party for such fees and expenses
of counsel as incurred,  such indemnifying  party agrees that it shall be liable
for any  settlement of any action  effected  without its written  consent if (i)
such settlement is entered into more than ten business days after the receipt by
such  indemnifying  party of the  aforesaid  request and (ii) such  indemnifying
party shall have failed to reimburse the  indemnified  party in accordance  with
such  request  for  reimbursement  prior  to the  date  of such  settlement.  No
indemnifying  party shall,  without the prior written consent of the indemnified
party, effect any settlement of any pending or threatened  proceeding in respect
of which any indemnified party is or could have been a party and indemnity could
have been sought  hereunder by such  indemnified  party,  unless such settlement
includes an unconditional  release of such indemnified  party from all liability
on claims that are the subject matter of such proceeding.

         (c) The  Underwriter  agrees to indemnify and hold harmless the Company
and its trustees or officers who sign the Registration  Statement (or any person
named in the Registration  Statement as having agreed to become a trustee of the
Company) and any person controlling the Company within the meaning of Section 15
of the  Act or  Section  20 of the  Exchange  Act,  to the  same  extent  as the
foregoing  indemnity from the Company to the Underwriter but only with reference
to information relating to the Underwriter  furnished in writing by or on behalf
of  the  Underwriter  expressly  for  use  in the  Registration  Statement,  the
Prospectus or any  preliminary  prospectus.  In case any action shall be brought
against the Company,  its trustees (or a named proposed  trustee) or officers or
persons  controlling  the  Company  based  on the  Registration  Statement,  the
Prospectus or any  preliminary  prospectus and in respect of which indemnity may
be sought against the  Underwriter,  the  Underwriter  shall have the rights and
duties given to the Company  (except that if the Company  shall have assumed the
defense thereof,  the Underwriter shall not be required to do so, but may employ
separate counsel therein and participate in the defense thereof but the fees and
expenses of such counsel  shall be at the expense of the  Underwriter),  and the
Company,  its  trustees  (or a named  proposed  trustee) or officers and persons
controlling  the  Company  shall  have  the  rights  and  duties  given  to  the
Underwriter, by Section 7(b) hereof.

         (d)  If  the  indemnification   provided  for  in  this  Section  7  is
unavailable to an indemnified party in respect of any losses,  claims,  damages,
liabilities or judgments referred to therein,  then each indemnifying  party, in
lieu of indemnifying such indemnified party, shall contribute to the amount paid
or  payable  by such  indemnified  party as a  result  of such  losses,  claims,
damages,  liabilities  and judgments (i) in such proportion as is appropriate to
reflect the  relative  benefits  received by the Company on the one hand and the
Underwriter on the other hand from the offering of the Securities 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 Company and
the Underwriter in connection with the statements or omissions which resulted in
such losses,  claims,  damages,  liabilities or judgments,  as well as any other
relevant equitable considerations. The relative benefits received by the Company
and the  Underwriter  shall be deemed to be in the

                                       16
<PAGE>

same  proportion as the total net proceeds from the offering  (before  deducting
expenses)  received by the Company,  and the total  underwriting  discounts  and
commissions  received by the Underwriter,  bear to the total price to the public
of the  Securities,  in each case as set forth in the table on the cover page of
the Prospectus.  The relative fault of the Company and the Underwriter  shall be
determined by reference  to, among other  things,  whether the untrue or alleged
untrue  statement of a material  fact or the  omission to state a material  fact
relates  to  information  supplied  by the  Company or the  Underwriter  and the
parties'  relative intent,  knowledge,  access to information and opportunity to
correct or prevent such statement or omission.

         The  Company  and the  Underwriter  agree that it would not be just and
equitable if  contribution  pursuant to this Section 7(d) were determined by pro
rata allocation or by any other method of allocation which does not take account
of  the  equitable  considerations  referred  to in  the  immediately  preceding
paragraph. The amount paid or payable by an indemnified party as a result of the
losses, claims, damages, liabilities or judgments referred to in the immediately
preceding  paragraph shall be deemed to include,  subject to the limitations set
forth above, 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 7, the Underwriter  shall not be
required  to  contribute  any  amount in excess of the amount by which the total
price at which the Securities  underwritten  by it and distributed to the public
were  offered  to the  public  exceeds  the  amount  of any  damages  which  the
Underwriter  has  otherwise  been  required  to pay by reason of such  untrue or
alleged untrue  statement or omission or alleged  omission.  No person guilty of
fraudulent  misrepresentation  (within the meaning of Section  11(f) of the Act)
shall be  entitled  to  contribution  from any person who was not guilty of such
fraudulent misrepresentation.

         8.  Conditions  of  Underwriter's  Obligations.  The  obligation of the
Underwriter  to purchase the  Securities  under this Agreement is subject to the
satisfaction of each of the following conditions:

         (a) All the  representations  and  warranties set forth in Section 6 of
this Agreement shall be true and correct on the Closing Date with the same force
and effect as if made on and as of the Closing Date.

         (b) At the Closing Date no stop order  suspending the  effectiveness of
the  Registration  Statement  shall have been issued and no proceedings for that
purpose shall have been commenced or shall be pending before or  contemplated by
the Commission; and the Prospectus and any amendment or supplement thereto shall
have been filed  with the  Commission  in the manner and within the time  period
required by Rule 424(b) under the Act.

         (c) (i)  Since  the  date  of the  latest  balance  sheet  included  or
incorporated  by reference in the  Registration  Statement  and the  Prospectus,
there  shall not have  been any  material  adverse  change,  or any  development
involving a prospective material adverse change, in the condition,  financial or
otherwise,  or in the earnings,  affairs or business  prospects,  whether or not
arising in the ordinary course of business,  of the Company; (ii) since the date
of the latest  balance  sheet  included  or  incorporated  by  reference  in the
Registration  Statement  and the  Prospectus

                                       17
<PAGE>

(exclusive of any  amendments or supplements  thereto  subsequent to the date of
this  Agreement),  there  shall not have  been any  change,  or any  development
involving  a  prospective  material  adverse  change,  in the  capital or in the
long-term debt of the Company from that set forth in the Registration  Statement
and Prospectus;  (iii) the Company and its subsidiaries  shall have no liability
or obligation,  direct or  contingent,  which is material to the Company and its
subsidiaries,  taken as a whole,  other than those reflected in the Registration
Statement and the Prospectus (exclusive of any amendments or supplements thereto
subsequent  to the date of this  Agreement);  (iv)  since the date of the latest
balance  sheet  included  or  incorporated  by  reference  in  the  Registration
Statement and the Prospectus,  none of the properties owned by the Company as of
the Closing Date shall have sustained any material loss or casualty due to fire,
flood, earthquake,  hurricane,  tornado, accident or other calamity,  whether or
not covered by  insurance,  or from any labor  dispute or court or  governmental
action,  order or decree;  and (v) on the Closing Date you shall have received a
certificate  dated the Closing Date, signed by the President and Chief Operating
Officer and the Chief Financial  Officer of the Company,  confirming the matters
set forth in  paragraphs  (a),  (b),  (c) and (j) of this Section 8 and that the
Company  has  complied  with  all of the  agreements  and  satisfied  all of the
conditions herein contained and required to be complied with or satisfied by the
Company on or prior to the Closing Date.

         (d)  You  shall  have   received  on  the   Closing   Date  an  opinion
(satisfactory to you and counsel for the  Underwriter),  dated the Closing Date,
of Sullivan & Worcester LLP, counsel for the Company, to the effect that:

                  (i) The  Company is a Maryland  real estate  investment  trust
         duly organized, validly existing and in good standing under the laws of
         the State of Maryland; each of its Significant Subsidiaries (as defined
         in Rule 1-02 of Regulation S-X under the Act) has been duly  organized,
         is validly  existing as a corporation  or trust in good standing  under
         the laws of its jurisdiction of incorporation or organization;  each of
         the  Company  and its  subsidiaries  has the  trust  or  corporate  (as
         applicable)  power and  authority to carry on its business as described
         in the  Registration  Statement and in the Prospectus and to own, lease
         and operate its properties; each of the Company and its subsidiaries is
         duly  qualified  and is in good  standing as a foreign  corporation  or
         trust,  as  the  case  may  be,  authorized  to  do  business  in  each
         jurisdiction  in which its  ownership  or leasing of property  requires
         such  qualification,  except where the failure to be so qualified would
         not have a material adverse effect on the Company and its subsidiaries,
         taken as a whole.

                  (ii) All of the issued and  outstanding  shares of  beneficial
         interest of, or other  ownership  interests  in, each of the  Company's
         subsidiaries have been duly authorized and validly issued and are fully
         paid  and,   except   as  to   subsidiaries   that  are   partnerships,
         non-assessable,  and are  owned by the  Company  free and  clear of any
         security  interest  or other  adverse  interest  (within the meaning of
         Article 8 of the Massachusetts Uniform Commercial Code).

                  (iii) The Company has the requisite  trust power and authority
         to enter into and perform this  Agreement  and to issue and deliver the
         Securities.

                                       18
<PAGE>

                  (iv)  This   Agreement  and  the  Indenture   have  been  duly
         authorized, executed and delivered by the Company.

                  (v) The  Indenture  is a valid and binding  obligation  of the
         Company enforceable in accordance with its terms, subject to applicable
         bankruptcy,  insolvency,  reorganization,  moratorium  and similar laws
         affecting creditors' rights generally and equitable principles; and the
         Indenture has been duly qualified under the Trust Indenture Act.

                  (vi) The  Securities  have  been  duly  authorized  and,  when
         executed and  authenticated  in accordance  with the  provisions of the
         Indenture and  delivered  and paid for in accordance  with the terms of
         this  Agreement,  will be valid and binding  obligations of the Company
         enforceable  in  accordance  with their  terms  subject  to  applicable
         bankruptcy,  insolvency,  reorganization,  moratorium  and similar laws
         affecting creditors' rights generally and equitable principles; and the
         holders of the Securities are entitled to the benefit of the Indenture.

                  (vii)  The  execution,   delivery  and   performance  of  this
         Agreement, and the consummation of the transactions herein contemplated
         will not  conflict  with or  constitute a breach or violation of any of
         the terms or  provisions  of, or  constitute a default  under,  (A) the
         Declaration  of Trust or the  By-laws of the  Company or the charter or
         by-laws or other organizational documents of any Significant Subsidiary
         of the Company, (B) except as disclosed in the Prospectus, any material
         agreement,  indenture or other instrument to which the Company,  or any
         of its Significant Subsidiaries or their respective material properties
         or assets is bound,  or (C) any  laws,  administrative  regulations  or
         rulings or decrees  known to such counsel to which the Company,  any of
         its Significant Subsidiaries or their respective material properties or
         assets may be subject.

                  (viii)   No   consent,   approval,    authorization,    order,
         registration,  filing, qualification,  license or permit of or with any
         federal,  Massachusetts  or Maryland court or public,  governmental  or
         regulatory  agency or body having  jurisdiction over the Company or any
         of its  Significant  Subsidiaries or any of their  respective  material
         properties or assets is required for the Company's execution,  delivery
         and  performance  of  this  Agreement  and  the   consummation  of  the
         transactions  contemplated hereby, including,  without limitation,  the
         issuance,  sale  and  delivery  of  the  Securities  pursuant  to  this
         Agreement,  except  such  as  have  been  obtained  and  such as may be
         required under foreign and state securities or "Blue Sky" laws.

                  (ix) The Registration Statement has become effective under the
         Act, and, to the knowledge of such  counsel,  no stop order  suspending
         the  effectiveness of the Registration  Statement is in effect,  and no
         proceedings  for such purpose are pending  before or  threatened by the
         Commission;  and any required filing of the Prospectus pursuant to Rule
         424 under the Act has been made in accordance with said Rule 424.

                  (x) To such  counsel's  knowledge,  except as disclosed in the
         Registration  Statement or in the Prospectus,  there is not now pending
         or threatened, any litigation,

                                       19
<PAGE>

         action,  suit  or  proceeding  to  which  the  Company  or  any  of its
         subsidiaries  is  or  will  be a  party  before  or  by  any  court  or
         governmental  agency or body,  which (A) might  result in any  material
         adverse  change in the  condition,  financial or  otherwise,  or in the
         business, operations,  earnings, prospects or properties of the Company
         and its  subsidiaries,  taken as a whole,  or (B) might  materially and
         adversely  affect  the  property  or  assets  of the  Company  and  its
         subsidiaries,  taken as a whole,  or (C) concerns the Company or any of
         its subsidiaries and is required to be disclosed in the Prospectus,  or
         (D) could adversely  affect the  consummation of this Agreement and the
         issuance of the Securities; to such counsel's knowledge, no contract or
         other  document  is  required  to  be  described  in  the  Registration
         Statement  or in the  Prospectus  or to be filed as an  exhibit  to the
         Registration  Statement  that is not  described  therein  or  filed  as
         required.

                  (xi) Except as otherwise disclosed in the Prospectus,  to such
         counsel's knowledge, neither the Company nor any of its subsidiaries is
         in   violation   of  its   respective   charter  or  by-laws  or  other
         organizational  documents  or in  default  in  the  performance  of any
         obligation,  agreement or condition  contained in any bond,  debenture,
         note or any other  evidence of  indebtedness  or in any other  material
         agreement,  indenture or  instrument to which the Company or any of its
         subsidiaries is a party or by which any of their respective  properties
         or assets may be bound or affected,  except for any such violation that
         would not have a material  adverse effect on the business,  operations,
         earnings,  business  prospects,  properties or condition  (financial or
         otherwise) of the Company and its subsidiaries taken as a whole.

                  (xii) To such counsel's knowledge, each of the Company and its
         subsidiaries has such permits, licenses,  franchises and authorizations
         of  governmental  or  regulatory  authorities  (together,   "permits"),
         including,  without limitation, under any applicable Environmental Law,
         as are necessary to own, lease and operate its properties and to engage
         in the business  currently  conducted by it,  except such  licenses and
         permits  as to which  the  failure  to own or  possess  will not in the
         aggregate have a material  adverse effect on the business,  operations,
         earnings,  business  prospects,  properties or condition  (financial or
         otherwise) of the Company and its subsidiaries, taken as a whole.

                  (xiii) The  Registration  Statement and the Prospectus and any
         supplements or amendments thereto (except for the financial  statements
         and the  notes  thereto  and the  schedules  and other  financial  data
         included  therein,  the Excluded  Proceedings  (as defined in paragraph
         (xxi)  below)  and  the  part  of  the   Registration   Statement  that
         constitutes  the  Statement  of  Eligibility  (Form T-1) of the Trustee
         under  the Trust  Indenture  Act,  as to which  such  counsel  need not
         express any opinion)  comply as to form in all material  respects  with
         the requirements of the Act.

                  (xiv)  Each   document   incorporated   by  reference  in  the
         Registration  Statement and in the Prospectus (except for the financial
         statements and the notes thereto and the schedules and other  financial
         included therein and the Excluded Proceedings, as to which such counsel
         need not express any  opinion)  complied as to form when filed with the
         Commission  in all  material  respects  with  the  requirements  of the
         Exchange Act.

                                       20
<PAGE>

                  (xv) To the  extent  required  to be  described  therein,  the
         Securities  conform in all material respects to the descriptions in the
         Registration Statement and the Prospectus.

                  (xvi) [The statements (a) in the Prospectus under the captions
         "Description   of  Debt   Securities",   "Description  of  the  Notes",
         "Description of Shares", "Redemption; Business Combinations and Control
         Share Acquisitions,"  "Limitation of Liability;  Shareholder Liability"
         and "Certain  Federal Income Tax  Considerations"  and (b) in Item 1 of
         the  Company's  Annual  Report on Form 10-K for the  fiscal  year ended
         December 31, 1999 under the captions  "Regulation  and  Reimbursement",
         "Federal Income Tax  Considerations"  and "ERISA Plans, Keogh Plans and
         Individual Retirement Accounts" in each case insofar as they purport to
         summarize  matters arising under  Massachusetts  or Maryland law or the
         federal law of the United  States,  or provisions of documents to which
         the Company is a party specifically  referred to therein,  are accurate
         summaries of such legal matters or provisions.] [Update, if necessary]

                  (xvii) The Company has  qualified to be taxed as a real estate
         investment  trust pursuant to Sections  856-860 of the Code for each of
         the fiscal years ended December 31, 1987 through December 31, 1999, and
         the Company's current  anticipated  investments and its current plan of
         operation  will  enable it to  continue  to meet the  requirements  for
         qualification  and taxation as a real estate investment trust under the
         Code;  actual  qualification of the Company as a real estate investment
         trust,  however,  will depend upon the Company's  continued  ability to
         meet,  and its meeting,  through  actual annual  operating  results and
         distributions, the various qualification tests imposed under the Code.

                  (xviii)  The  Company  is  not  required  to  register  as  an
         "investment company" within the meaning of the 1940 Act.

                  (xix) The Advisor (A) is a corporation duly organized, validly
         existing and in good standing  under the laws of the State of Delaware,
         and (B) has the requisite  corporate power and authority to conduct its
         business  as  described  in the  Prospectus  and to own and operate its
         material properties.

                  (xx) The Advisory Agreement has been duly authorized, executed
         and  delivered  by  the  parties  thereto  and  constitutes  the  valid
         agreement of the parties  thereto,  enforceable in accordance  with its
         terms,  except (a) as limited by the effect of bankruptcy,  insolvency,
         reorganization,  fraudulent transfer,  moratorium or other similar laws
         relating to or affecting  the rights or remedies of  creditors,  (b) as
         limited by the effect of general  principles of equity  (regardless  of
         whether  enforcement is sought in a proceeding in equity or at law) and
         (c) insofar as the  enforceability  of the indemnity  and  contribution
         provisions  contained  in such  agreement  may be limited by federal or
         state securities laws and the public policy underlying such laws.

                  (xxi) Although counsel has not undertaken, except as otherwise
         indicated in their opinion,  to determine  independently,  and does not
         assume any  responsibility  for,  the accuracy or  completeness  of the
         statements in the Registration Statement, such counsel has participated
         in the  preparation of the  Registration  Statement and the Prospectus,

                                       21
<PAGE>

         including  review and  discussion  of the contents  thereof  (including
         review and discussion of the contents of all documents  incorporated by
         reference  in the  Registration  Statement  and  the  Prospectus),  and
         nothing has come to the  attention of such counsel that has caused them
         to believe that the  Registration  Statement  (including  the documents
         incorporated  by  reference  therein)  at  the  time  the  Registration
         Statement became effective, or the Prospectus, as of its date and as of
         Closing  Time, as the case may be,  contained an untrue  statement of a
         material fact or omitted to state a material fact required to be stated
         therein or necessary to make the  statements  therein not misleading or
         that  any  amendment  or  supplement  to  the  Prospectus,  as  of  its
         respective  date, and as of Closing Time, as the case may be, contained
         any untrue  statement of a material fact or omitted to state a material
         fact necessary in order to make the statements therein, in the light of
         the circumstances  under which they were made, not misleading (it being
         understood  that such  counsel need express no view with respect to (a)
         the  financial  statements  and the notes thereto and the schedules and
         other  financial  data  included or  incorporated  by  reference in the
         Registration  Statement  or in the  Prospectus  or (b) the  proceedings
         referred to in Item 3 of the  Company's  Annual Report on Form 10-K for
         the fiscal  year ended  December  31,  1999  under the  caption  "Legal
         Proceedings"  and  any  claims  related  thereto   (collectively,   the
         "Excluded Proceedings"),  or (c) the part of the Registration Statement
         that constitutes the Statement of Eligibility (Form T-1) of the Trustee
         under the Trust Indenture Act.

         In rendering  their opinion as aforesaid,  Sullivan & Worcester LLP may
rely upon an  opinion,  dated as of Closing  Time,  of Ballard  Spahr  Andrews &
Ingersoll,  LLP as to matters  governed  by  Maryland  law,  provided  that such
reliance is expressly  authorized  by such opinion and a copy of such opinion is
delivered to the Underwriters and is, in form and substance, satisfactory to the
Underwriters and counsel for the  Underwriters.  In addition,  in rendering such
opinion,  such  counsel may state that their  opinion as to laws of the State of
Delaware  is  limited to the  Delaware  General  Corporation  Law and that their
opinion with respect to the qualification of the Company and its subsidiaries to
do  business  in  jurisdictions  other than their  respective  jurisdictions  of
organization  is based  solely upon  certificates  to such  effect  issued by an
appropriate official of the applicable jurisdictions.

         The opinion of Ballard Spahr Andrews & Ingersoll,  LLP described in the
paragraph  above  shall be  rendered  to the  Underwriter  at the request of the
Company and shall so state therein.

         In addition,  the  Underwriter  shall have  received at Closing Date an
opinion  (satisfactory  to the Underwriter  and counsel for the  Underwriter) of
Sherin & Lodgen LLP, special counsel for the Company,  dated as of Closing Date,
to the effect that the statements  describing  the  proceedings in Item 3 of the
Company's Annual Report on Form 10-K for the fiscal year ended December 31, 1999
under the caption  "Legal  Proceedings",  insofar as they  purport to  summarize
legal proceedings, constitute a fair summary of such legal proceedings.

         (e) You shall have  received on the Closing Date an opinion,  dated the
Closing  Date,  of  Milbank,  Tweed,  Hadley  &  McCloy  LLP,  counsel  for  the
Underwriter,  as to the matters  referred to in clauses (v), (vi) and (xvi) (but
only with  respect to the  statements  under the caption

                                       22
<PAGE>

"Underwriting"  in  the  Prospectus  Supplement),  (iv)  (but  only  as  to  due
authorization,  execution  and  delivery)  and  clause  (xxi)  of the  foregoing
paragraph (d).

         In giving such opinion  with  respect to the matters  covered by clause
(xxi), such counsel may state that their opinion and belief are based upon their
participation  in the preparation of the  Registration  Statement and Prospectus
and any amendments or supplements thereto (other than the documents incorporated
therein  by  reference)  and  review  and  discussion  of the  contents  thereof
(including the documents  incorporated  therein by  reference),  but are without
independent check or verification except as specified.

         In rendering  their opinion,  such counsel may rely on an opinion dated
the  Closing  Date of Ballard  Spahr  Andrews &  Ingersoll,  LLP,  as to matters
governed by the laws of the State of Maryland.

         (f) You shall  have  received a letter  dated on and as of the  Closing
Date,  in form  and  substance  satisfactory  to you,  from  Ernst & Young  LLP,
independent public accountants, with respect to certain financial statements and
certain financial information contained in or incorporated by reference into the
Registration  Statement  and the  Prospectus,  in  substantially  the  form  and
substance of the letter  delivered to you by Arthur  Andersen LLP on the date of
this Agreement.

         (g) The  Securities  shall have been rated ["BBB"] by Standard & Poor's
Ratings Services and "[Baa3]" by Moody's Investors Service, Inc.

         (h) The  Underwriter  shall have received a  counterpart,  conformed as
executed, of the Indenture which shall have been entered into by the Company and
the Trustee.

         (i) The Company  shall not have failed at or prior to the Closing  Date
to perform or comply with any of the agreements herein contained and required to
be performed or complied with by the Company at or prior to the Closing Date.

         (j) On or after the date hereof,  (i) there shall not have occurred any
downgrading,  suspension or withdrawal  of, nor shall any notice have been given
of any potential or intended downgrading, suspension or withdrawal of, or of any
review (or of any potential or intended  review) for a possible change that does
not indicate the direction of the possible  change in, any rating of the Company
or any securities of the Company (including,  without limitation, the placing of
any of the  foregoing  ratings  on credit  watch  with  negative  or  developing
implications  or under review with an uncertain  direction)  by any  "nationally
recognized statistical rating organization" as such term is defined for purposes
of Rule 436(g)(2)  under the Act, (ii) there shall not have occurred any change,
nor shall any notice have been given of any potential or intended change, in the
outlook  for any rating of the Company or any  securities  of the Company by any
such rating  organization and (iii) no such rating organization shall have given
notice that it has assigned (or is considering  assigning) a lower rating to the
Securities than that on which the Securities were marketed.

         9. Effective Date of Agreement and  Termination.  This Agreement  shall
become effective upon the execution of this Agreement by the parties hereto.

                                       23
<PAGE>

         This  Agreement may be terminated at any time prior to the Closing Date
by you by written notice to the Company if any of the following has occurred:

                  (i)  since the  respective  dates as of which  information  is
         given in the  Registration  Statement and the Prospectus,  any material
         adverse change or development  involving a prospective material adverse
         change in the condition,  financial or otherwise, of the Company or the
         earnings, affairs, or business prospects of the Company, whether or not
         arising  in the  ordinary  course of  business,  which  would,  in your
         judgment,  make it  impracticable to market the Securities on the terms
         and in the manner contemplated in the Prospectus,

                  (ii)  any  outbreak  or  escalation  of  hostilities  or other
         national  or  international  calamity  or crisis or change in  economic
         conditions  or in  the  financial  markets  of  the  United  States  or
         elsewhere that, in your judgment, is material and adverse and would, in
         your judgment,  make it  impracticable  to market the Securities on the
         terms and in the manner contemplated in the Prospectus,

                  (iii) the  suspension  or  material  limitation  of trading in
         securities  or  other  instruments  on the  NYSE,  the  American  Stock
         Exchange, The Chicago Board of Options Exchange, the Chicago Mercantile
         Exchange,  the Chicago Board of Trade or the Nasdaq  National Market or
         limitation on prices for  securities on any such exchange or the Nasdaq
         National Market,

                  (iv)  the  suspension  of  trading  of any  securities  of the
         Company on any exchange or in the over-the-counter market,

                  (v) the enactment,  publication,  decree or other promulgation
         of any federal or state statute, regulation, rule or order of any court
         or other  governmental  authority which in your opinion  materially and
         adversely  affects,  or  will  materially  and  adversely  affect,  the
         business or operations of the Company,

                  (vi) the declaration of a banking moratorium by either federal
         or New York State authorities or

                  (vii) the taking of any action by any federal,  state or local
         government or agency in respect of its monetary or fiscal affairs which
         in your opinion has a material adverse effect on the financial  markets
         in the United States.

         10.  Miscellaneous.  Notices  given  pursuant to any  provision of this
Agreement  shall  be  addressed  as  follows:  (a) if to the  Company,  to  HRPT
Properties Trust, 400 Centre Street, Newton, MA 02458, Attention: President, and
(b)  if  to  the  Underwriter,   to  Donaldson,  Lufkin  &  Jenrette  Securities
Corporation,  277 Park Avenue,  New York, New York 10172,  Attention:  Syndicate
Department,  or in any case to such other  address as the person to be  notified
may have requested in writing.

         The parties hereto agree,  for purposes of Section 6(c),  Section 7 and
any other provision of this Agreement, that the only information relating to the
Underwriter furnished to the

                                       24
<PAGE>

Company in  writing by the  Underwriter  expressly  for use in the  Registration
Statement,  any  preliminary  prospectus,  the  Prospectus  or any  amendment or
supplement thereto is the information  furnished by the Underwriter  included in
the  Prospectus,  (i)  listing  the name of the  Underwriter  under the  caption
"Underwriting," (ii) [in the third and fifth paragraphs and the second and third
sentences  of the  sixth  paragraph  under  the  caption  "Underwriting"  in the
Prospectus] and (iii) in the third sentence of the paragraph on the outside back
cover of the Prospectus.

         The respective indemnities,  contribution agreements,  representations,
warranties and other statements of the Company, its officers and trustees and of
the  Underwriter  set forth in or made pursuant to this  Agreement  shall remain
operative and in full force and effect, and will survive delivery of and payment
for the Securities,  regardless of (i) any investigation, or statement as to the
results  thereof,  made by or on behalf of the Underwriter or by or on behalf of
the Company, or its officers or trustees,  (ii) acceptance of the Securities and
payment for them hereunder and (iii) termination of this Agreement.

         If this Agreement shall be terminated by the Underwriter because of any
failure  or refusal  on the part of the  Company to comply  with the terms or to
fulfill any of the conditions of this Agreement, the Company agrees to reimburse
the  Underwriter  for  all  out-of-pocket   expenses  (including  the  fees  and
disbursements of counsel) reasonably incurred by it.

         Except  as  otherwise  provided,  this  Agreement  has been and is made
solely  for  the  benefit  of  and  shall  be  binding  upon  the  Company,  the
Underwriter,  any controlling  persons  referred to herein and their  respective
successors and assigns, all as and to the extent provided in this Agreement, and
no other  person  shall  acquire  or have any  right  under or by virtue of this
Agreement.  The term  "successors  and assigns" shall not include a purchaser of
any of the Securities from the Underwriter merely because of such purchase.

         This Agreement  shall be governed and construed in accordance  with the
laws of the State of New York.

         THE AMENDED AND RESTATED DECLARATION OF TRUST ESTABLISHING THE COMPANY,
DATED JULY 1, 1994, A COPY OF WHICH,  TOGETHER WITH ALL AMENDMENTS  THERETO (THE
"DECLARATION"),  IS  DULY  FILED  IN THE  OFFICE  OF  THE  STATE  DEPARTMENT  OF
ASSESSMENTS  AND TAXATION OF MARYLAND,  PROVIDES THAT THE NAME "HRPT  PROPERTIES
TRUST" REFERS TO THE TRUSTEES UNDER THE  DECLARATION  COLLECTIVELY  AS TRUSTEES,
BUT NOT INDIVIDUALLY OR PERSONALLY,  AND THAT NO TRUSTEE, OFFICER,  SHAREHOLDER,
EMPLOYEE  OR  AGENT OF THE  COMPANY  SHALL  BE HELD TO ANY  PERSONAL  LIABILITY,
JOINTLY OR SEVERALLY,  FOR ANY OBLIGATION OF, OR CLAIM AGAINST, THE COMPANY. ALL
PERSONS  DEALING WITH THE COMPANY,  IN ANY WAY, SHALL LOOK ONLY TO THE ASSETS OF
THE COMPANY FOR THE PAYMENT OF ANY SUM OR THE PERFORMANCE OF ANY OBLIGATION.

         This  Agreement may be signed in various  counterparts  which  together
shall constitute one and the same instrument.


                                       25
<PAGE>

         Please  confirm that the foregoing  correctly  sets forth the agreement
between the Company and you.

                                Very truly yours,

                                HRPT PROPERTIES TRUST



                                By ___________________________
                                    Name:
                                    Title:

DONALDSON, LUFKIN & JENRETTE
         SECURITIES CORPORATION

By ___________________________
   Name:
   Title:

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