HEALTH AND RETIREMENT PROPERTIES TRUST


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                    FORM 10-K

                [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                   For the Fiscal Year Ended December 31, 1998
                                       OR

              [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                          OF THE EXCHANGE ACT OF 1934

         For the transition period from ______________ to ______________

                          Commission File Number 1-9317

                              HRPT PROPERTIES TRUST
             (Exact name of registrant as specified in its charter)

         Maryland                                               04-6558834
(State or other jurisdiction                                  (IRS Employer  
    of incorporation)                                       Identification No.)


                 400 Centre Street, Newton, Massachusetts 02458
               (Address of principal executive offices) (Zip Code)

                                  617-332-3990
              (Registrant's telephone number, including area code)

           Securities registered pursuant to Section 12(b) of the Act:



                                                                                Name of exchange on
                     Title of each class                                         which registered
- -------------------------------------------------------------------- -------------------------------------------
                                                                           
            Common Shares of Beneficial Interest                              New York Stock Exchange
     7.25% Convertible Subordinated Debentures due 2001                       New York Stock Exchange
 7.5% Convertible Subordinated Debentures due 2003, Series A                  New York Stock Exchange


        Securities registered pursuant to Section 12(g) of the Act: None

    Indicate by check mark whether the registrant: (1) has filed all reports
  required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
    1934 during the preceding 12 months (or for such shorter period that the
 registrant was required to file such reports), and (2) has been subject to such
                        filing requirements for the past
                             90 days. Yes [X] No [ ]

 Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
  of Regulation S-K is not contained herein, and will not be contained, to the
       best of registrant's knowledge, in definitive proxy or information
 statements incorporated by reference in Part III of this Form 10-K or any 
                        amendment to this Form 10-K. [X]






         The aggregate  market value of the voting stock of the registrant  held
by non-affiliates  was $1.8 billion based on the $13 3/4 closing price per share
for such stock on the New York Stock Exchange on March 29, 1999. For purposes of
this calculation,  1,134,372 shares held by HRPT Advisors,  Inc., 2,463,366 held
by REIT  Management & Research,  Inc.  solely in its capacity as voting  trustee
under a voting trust agreement or a proxy, an aggregate of 44,250 shares held by
the Trustees and executive officers of the registrant,  44,851 held by Gerard M.
Martin and 44,851 held by Barry M. Portnoy,  have been included in the number of
shares held by affiliates.

         Number of the registrant's Common Shares of Beneficial  Interest,  $.01
par value ("Shares"), outstanding as of March 29, 1999: 131,893,126.

DOCUMENTS INCORPORATED BY REFERENCE

         Part  III of this  Annual  Report  on  Form  10-K  is  incorporated  by
reference  from  our  definitive  Proxy  Statement  for the  annual  meeting  of
shareholders currently scheduled to be held on May 11, 1999.

CERTAIN IMPORTANT FACTORS

         This Annual Report on Form 10-K contains  statements  which  constitute
forward  looking  statements  within the  meaning of the  Securities  Litigation
Reform Act of 1995. These  statements  appear in a number of places in this Form
10-K regarding our intent,  belief or expectations  with respect to expansion of
our  portfolio,  our ability to pay  dividends,  the effect of year 2000 issues,
policies and plans regarding investments,  financings and other matters, our tax
status  as a real  estate  investment  trust  and our  access  to debt or equity
capital  markets or to other  sources  of funds and  statements  of  assumptions
underlying such  statements as to intent,  belief or  expectations.  Readers are
cautioned that any such forward looking  statements are not guarantees of future
performance  and involve  risks and  uncertainties  and that actual  results may
differ  materially from those  contained in the forward looking  statements as a
result of various  factors.  Such  factors  include  the status of the  economy,
compliance  with and  changes  to  regulations  and  payment  and  reimbursement
policies  within the health care  industry,  competition  within the health care
industry, and changes in federal, state and local legislation.  The accompanying
information contained or incorporated by reference in this Annual Report on Form
10-K,  including under the heading  "Business" and in our Current Report on Form
8-K dated March 5, 1999, under the heading "Management's Discussion and Analysis
of Financial  Condition and Results of Operations",  identifies  other important
factors that could cause such differences.

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








                                                HRPT PROPERTIES TRUST
                                            1998 FORM 10-K ANNUAL REPORT


                                                  Table of Contents

                                                       Part I
                                                                                                            Page
                                                                                                       
Item 1.           Business........................................................................           1
Item 2.           Properties......................................................................           19
Item 3.           Legal Proceedings...............................................................           21
Item 4.           Submission of Matters to a Vote of Security Holders.............................           22

                                                        Part II

Item 5.           Market for Registrant's Common Stock and Related Stockholder Matters............           22
Item 6.           Selected Financial Data.........................................................           23
Item 7.           Management's Discussion and Analysis of Financial Condition and Results of
                      Operations..................................................................           24
Item 7A.          Quantitative and Qualitative Disclosures About Market Risk                                 24
Item 8.           Financial Statements and Supplementary Data.....................................           25
Item 9.           Changes in and Disagreements with Accountants on Accounting and Financial
                      Disclosure..................................................................           25

                                                       Part III

Item 10.          Directors and Executive Officers of the Registrant..............................           *
Item 11.          Executive Compensation..........................................................           *
Item 12.          Security Ownership of Certain Beneficial Owners and Management..................           *
Item 13.          Certain Relationships and Related Transactions..................................           *

                  *   Incorporated by reference from our Proxy Statement for the
                      Annual Meeting of Shareholders  currently  scheduled to be
                      held on May 11, 1999,  to be filed  pursuant to Regulation
                      14A.

                                                        Part IV

Item 14.          Exhibits, Financial Statement Schedules and Reports on Form 8-K.................           25






         References in this Annual Report on Form 10-K to the "Company" or "HRP"
include consolidated subsidiaries, unless the context indicates otherwise.

                                     PART I
Item 1.  Business

         The  Company.  HRPT  Properties  Trust  ("HRP"  or the  "Company")  was
organized  on  October  9,  1986 as a  Maryland  real  estate  investment  trust
("REIT"). We invest in income producing real estate,  including office buildings
and senior housing properties.

         As of December 31, 1998, we owned 230 properties for a total investment
of $3.0 billion (at cost), had mortgage investments in 26 properties aggregating
$69.2 million and had an equity investment  representing 8.8% of the outstanding
common  shares of  Hospitality  Properties  Trust  ("HPT")  with an  approximate
carrying  value  of  $110.6  million,  for  total  real  estate  investments  of
approximately   $3.1  billion.   The   properties  are  described  in  "Business
Developments Since January 1, 1998" and "Properties".

                                   Number of              Total Investment
State                             Properties            at December 31, 1998
                                                         (in thousands)
Alaska                                     1                       $1,000
Arizona                                    9                       64,856
California                                30                      322,415
Colorado                                  10                       56,154
Connecticut                               11                      110,891
Delaware                                   1                       44,090
District of Columbia                       5                      207,521
Florida                                   10                      148,578
Georgia                                    5                       15,286
Illinois                                   2                       98,742
Iowa                                       7                        8,207
Kansas                                     4                        8,477
Louisiana                                  1                       18,992
Maryland                                   8                      191,164
Massachusetts                             34                      251,535
Michigan                                   2                        9,181
Minnesota                                  3                       40,704
Missouri                                   3                       11,564
Nebraska                                  10                       10,704
New Hampshire                              1                        3,754
New Jersey                                 5                       42,954
New Mexico                                 2                       11,021
New York                                   6                      185,225
North Carolina                             5                        9,192
Ohio                                       4                       26,930
Oklahoma                                   1                       24,762
Pennsylvania                              17                      553,997
Rhode Island                               1                        8,010
South Dakota                               3                        7,589
Tennessee                                  1                       22,173
Texas                                     22                      271,441
Vermont                                    8                       29,766
Virginia                                   7                      111,540
Washington                                 4                       40,930
West Virginia                              1                        4,898
Wisconsin                                  8                       33,904
Wyoming                                    4                       17,563
                                         ---                   ----------
Total                                    256                    3,025,710
                                         ===
Investment in HPT                                                 110,554
                                                               ----------
Total Investments                                              $3,136,264
                                                               ==========


                                       1




         Our  principal  executive  offices  are  located at 400 Centre  Street,
Newton, Massachusetts 02458, and our telephone number is (617) 332-3990.

         Investment  Policy and Method of Operation.  Our  investment  goals are
current income for distribution to  shareholders,  capital growth resulting from
appreciation in the residual value of owned  properties,  and  preservation  and
protection of shareholders'  capital.  Our income is derived primarily from rent
and interest payments under our leases and mortgages.

         Our day to day operations are conducted by REIT  Management & Research,
Inc.  ("RMR"),  our investment  manager.  RMR provides  investment,  management,
property  management  and  administrative  services  to us. RMR  originates  and
presents  investment  opportunities  to our  Board of  Trustees.  In  evaluating
potential investments, we consider factors such as: the historical and projected
rents  received and likely to be received from the property to meet  operational
needs and financing  obligations  and to provide a competitive  market return on
our investments;  the historic and expected operating  expenses,  including real
estate  taxes,  incurred  and  expected to be incurred  at the  properties;  the
growth,  tax and regulatory  environments of the market in which the property is
located;  the  quality,  experience,  and credit  worthiness  of the  property's
operator and tenants; an appraisal of the property, if available;  occupancy and
demand for similar  properties in the same or nearby markets;  the  construction
quality,  physical condition and design of the property; the geographic area and
type of  property;  and the pricing of  comparable  properties  as  evidenced by
recent arms length market sales.

         Prior to  investing  in  properties,  we obtain  title  commitments  or
policies  of title  insurance  insuring  that we hold title to or have  mortgage
interests in such properties, free of material liens and encumbrances.

         Our  investments  are  structured  using  leases  with  minimum  and/or
additional rent and escalation  provisions,  loans with fixed or floating rates,
joint  ventures  and  partnerships  with  affiliated  or  unaffiliated  parties,
commitments  or options to purchase  interests  in real  estate,  mergers or any
combination of the foregoing that will best suit the particular investment.

         In connection with our current bank credit facility,  we have agreed to
obtain lender  approval  before  exceeding  investment  concentrations  based on
certain criteria (see "Borrowing Policy"). Among these are that no more than 40%
of our investments be operated by any single tenant or mortgagor and that no new
hotel  investments be made. No limits,  other than those in connection  with our
bank credit facility, have been set on the number of properties in which we will
seek  to  invest,  or on the  concentration  of  investments  involving  any one
facility  or  geographical  area;  however,   our  Board  of  Trustees  consider
concentration  of  investments  in  determining  whether to make new or increase
existing investments.

         Our  Declaration  of Trust  and  operating  policies  provide  that any
investment  in  facilities  owned by us or  operated by RMR,  persons  expressly
permitted under the Declaration of Trust to own more than 8.5% of our shares, or
any company  affiliated with any of the foregoing must be approved by a majority
of the Board of Trustees not affiliated with any of the foregoing.

         We have in the past  considered  and may in the future  consider,  from
time to time, the acquisition of or merger with other  companies  engaged in the
same business as us; however,  we have no present  agreements or  understandings
concerning any such acquisition or merger.

         Borrowing  Policy.  In  addition  to the  use  of  equity,  we  utilize
short-term  and  long-term  borrowings  to finance  investments.  We have a bank
credit facility of $500 million.  In February 1999, the bank credit facility was
amended to permit the possible  spin-off of our senior housing  properties.  The
bank credit facility (which is guaranteed by most of our  subsidiaries)  is used
for  acquisition  funding on an interim  basis until equity or long-term debt is
raised and for  working  capital  and  general  business  purposes.  Outstanding
borrowings  under  the bank  credit  facility  at  December  31,  1998 were $100
million.

         Our  borrowing  guidelines  established  by our Board of  Trustees  and
covenants  in various debt  agreements  prohibit us from  maintaining  a debt to
equity ratio of greater  than 1 to 1. At December  31, 1998,  our debt to equity
ratio was .62 to 1. Our senior unsecured debt also imposes covenants on us which
may limit our ability to borrow.  The  Declaration  of Trust  prohibits  us from
incurring secured and unsecured indebtedness which in the aggregate exceeds 300%
of our net assets,  unless  approved by a majority of the Board of Trustees  not
affiliated  with us.  There can be no  assurance  that debt  capital will in the
future be available at reasonable rates to fund our operations or growth.


                                       2




Business Developments Since January 1, 1998

Investments

         During 1998, we acquired 48 office  properties  and five senior housing
properties for an aggregate  amount of $981.6  million and provided  improvement
funding totaling $17.2 million to our existing properties.

Financing

         During 1998, we sold 25,000,000  common shares in a public offering and
sold  6,977,575  common  shares  in four  offerings  to unit  investment  trusts
sponsored by various investment banks,  raising gross proceeds of $612.4 million
(net $580.3  million).  Proceeds from these offerings were used to repay amounts
outstanding  under our revolving bank credit  facility,  to purchase real estate
and for general business purposes.  In addition, we issued 362,217 common shares
due to the conversion of $6.8 million of our convertible subordinated debentures
and issued 286,400 common shares for the purchase of real estate.

         Since January 1, 1998, we have issued the  following  senior  unsecured
fixed rate term  notes:  $100  million of 6.7%  Senior  Notes due 2005 issued in
February  1998;  $160  million of 6-7/8%  Senior Notes due 2002 issued in August
1998;  $143 million of 8-1/2% Senior Notes due 2013 issued in November 1998; and
$90 million of 7-7/8%  Senior Notes due 2009 in March,  1999.  In  addition,  we
issued $50.0 million of senior unsecured remarketed reset notes which are due in
2007 and bear interest at LIBOR plus a premium. The $532.8 million aggregate net
proceeds from these notes were used to repay amounts then outstanding  under our
revolving bank credit facility, to purchase real estate and for general business
purposes.

         In April 1998, we increased and extended our unsecured  revolving  bank
credit  facility with a group of banks for which Dresdner Bank AG acts as agent.
The new credit facility permits  borrowings of up to $500.0 million,  matures in
2002 and bears interest at LIBOR plus a premium.  We recognized an extraordinary
loss on the early  extinguishment  of debt for $2.1  million  as a result of the
write-off of deferred  financing fees  associated  with our previous bank credit
facility.

Other Developments 

         Since  January 1, 1998,  we  disposed  of one office  property  and six
senior  housing  properties  for $39.6  million,  including  two senior  housing
properties for $22.5 million in 1999.  During this period, we also received full
repayments  for  $36.0  million  of  mortgages  secured  by ten  senior  housing
properties, including two senior housing properties for $3.0 million in 1999.

         In December  1998,  we entered an agreement for the  disposition  of 12
senior housing properties.  The net proceeds of this disposition are expected to
be about $65.0 million, and are subject to seller financing.  These transactions
are expected to close within the next 30 to 60 days.

         In December 1998, we announced a plan for a possible separate financing
which  would  include  a  public  offering  of  common  shares  of  one  of  our
subsidiaries, Senior Housing Properties Trust ("SNH"), and a distribution to our
shareholders  of common  shares of that  subsidiary.  The  public  offering  and
distribution constitute one alternative transaction that we are considering with
respect to  financing  our  senior  housing  real  estate  investments.  The SNH
transaction  as described in the SEC filing is not likely to occur under present
market  conditions.  At  this  time,  we  are  considering  various  alternative
transactions  which  would  reposition  our  senior  housing  properties  into a
separate publicly owned REIT.

         On July 1,  1998,  we  changed  our name from  "Health  and  Retirement
Properties  Trust" to "HRPT  Properties  Trust",  reflecting  our  investment in
commercial office properties as well as senior housing real estate.

The Investment Manager

         RMR is a Delaware  corporation  owned by Gerard M.  Martin and Barry M.
Portnoy.  RMR's  principal  executive  offices are located at 400 Centre Street,
Newton,  Massachusetts 02458, and its telephone number is (617) 332-3990.  As of
January 1, 1998,  we entered  into  separate  investment  advisor  and  property
management  agreements with RMR. RMR provides investment,  management,  property
management services and administrative services to us. In addition, an affiliate
of RMR also provides garage management  services to some of our properties.  RMR
also acts as the investment manager to HPT and has other business interests. The
Directors  of RMR are Gerard M. Martin,  Barry M. Portnoy and David J.  Hegarty.
The  officers of RMR are David J.  Hegarty,  President  and

                                       3

Secretary,  John G. Murray, Executive Vice President, John Popeo, Treasurer, and
Ajay Saini, John A. Mannix, David Lepore and Thomas M. O'Brien, Vice Presidents.
Gerard M. Martin and Barry M.  Portnoy are our  managing  trustees  and David J.
Hegarty, Ajay Saini, John A. Mannix and David M. Lepore are our officers.

Employees

         As of March 16, 1999, we had no employees.  RMR, which  administers our
day-to-day operations, had 177 full-time employees and three active directors as
of that date.

Regulation and Reimbursement

         Our  tenants  and  borrowers  who operate  senior  housing  properties,
including long-term care facilities,  retirement communities and assisted living
centers,  must comply with federal,  state and local statutes and regulations in
order to operate the properties.  The health care industry depends significantly
upon  federal and  federal/state  programs  for  revenues  and, as a result,  is
vulnerable to the budgetary policies of both the federal and state governments.

Certificates  of  Need.  Certain  of  our  investments  are  in  senior  housing
properties  which require  certificates  of need ("CONs")  prior to expansion of
beds or services, certain capital expenditures,  and in some states, a change in
ownership.  CON  requirements  are not  uniform  throughout  the United  States.
Changes  in  CON  requirements  may  affect  competition,  profitability  of the
properties and our opportunities for investment in senior housing properties.

Federal and State Regulation and  Reimbursement.  Our senior housing  properties
are  affected  by a number  of  federal  and  state  statutes  and  regulations,
including state licensing laws, laws related to  reimbursement of long-term care
facilities under Medicare and Medicaid programs and federal and state anti-fraud
and anti-kickback laws. In order to receive Medicare and Medicaid reimbursement,
our tenants and borrowers who operate long-term care facilities must demonstrate
that the  facilities  are in  substantial  compliance  with state  licensing and
federal  certification  standards,  which  include  extensive  resident care and
physical plant  requirements.  Federal and state agencies  regularly monitor the
quality of care  provided  and  regularly  inspect the  physical  conditions  of
long-term care facilities.  Medicare and Medicaid laws limit  reimbursement  for
capital costs and in some circumstances for rental or lease expenses.  Under the
Balanced  Budget Act of 1997  (Public  Law  105-33),  (the  "BBA"),  the federal
Department  of Health  and  Human  Services,  ("HHS"),  has  adopted a  Medicare
prospective  payment  system  for  skilled  nursing  facilities  which  includes
capital-related  costs and is being phased in over three years beginning July 1,
1998. Many states have adopted Medicaid  prospective  payment  systems.  The BBA
also increases  states'  flexibility in establishing  Medicaid rates for nursing
facility  services,  repeals the Boren Amendment under which Medicaid  providers
had the right to challenge the adequacy of Medicaid  rates and  strengthens  the
ability  of HHS and the  states  to  exclude  providers  from the  Medicare  and
Medicaid programs for health care-related offenses.  Reduction in Medicare rates
and  Medicaid  rates  may  have a  negative  effect  on some of our  tenants  or
borrowers and may effect their ability to pay rent or mortgage  interest  income
to us.

         Two  federal  government  studies  are  currently  underway  to provide
background information and make recommendations  regarding the future regulation
of and the possibility of increased governmental funding for the assisted living
industry.  One study is being conducted by the General Accounting Office ("GAO")
for  the  Senate  Special  Committee  on  Aging  and is  focused  upon  consumer
protection  and quality of care issues.  The second study is being  conducted by
the HHS's  Assistant  Secretary for Planning and  Evaluation  and is expected to
touch upon all aspects of the assisted living industry including quality of care
and financing.  A 1998 National Academy for State Health Policy study,  which is
part of this  second  study,  found  that 22 states  had  implemented  licensing
standards specifically for assisted living and draft rules had been issued in an
additional  six states,  and predicted  that every state will soon have reviewed
their  regulations  governing  residential  care  settings.  These  studies  are
expected to be completed  during 1999. We cannot  predict  whether these studies
will result in governmental  policy changes or new  legislation,  or what impact
any changes may have. Based upon our analysis of current economic and regulatory
trends,  we do not  believe  that the  federal  government  is  likely to have a
material  impact upon the current  regulatory  environment in which the assisted
living industry operates unless it also undertakes expanded funding obligations;
and we do not  believe a  materially  increased  financial  commitment  from the
federal government is presently likely.  However, we do anticipate that assisted
living  facilities  will  increasingly  be licensed and regulated by the various
states,  and that with the absence of federal  standards,  the states'  policies
will continue to vary widely.

         HHS's  Health Care  Financing  Administration,  ("HCFA"),  has begun to
implement an  initiative  to increase  the  effectiveness  of  Medicare/Medicaid
nursing  facility  survey and  enforcement  activities  by HCFA and the  states.
HCFA's initiative  follows its July 1998 report to Congress on the effectiveness
of the survey  and  enforcement  system,  several  March 1999  reports by HCFA's
Office of Inspector General  concerning quality of care in nursing homes, a July
1998 GAO report  which found  inadequate  care in a  significant  proportion  of
California nursing

                                       4


homes and March  1999 GAO  reports  which  recommended  that HCFA and the states
strengthen  their  enforcement  activities to ensure that nursing homes maintain
compliance with federal health care  standards.  In July 1998 and March 1999 the
Senate Special  Committee on Aging held hearings on these issues.  HCFA plans to
focus  survey  and  enforcement   efforts  at  nursing  facilities  with  repeat
violations of Medicare/Medicaid  standards,  including chain-operated facilities
with patterns of  noncompliance.  HCFA also is requiring  state  agencies to use
enforcement   sanctions  and  remedies  more  promptly  and   effectively   when
substandard  care is  identified,  and HCFA is increasing its oversight of state
survey  agencies.  In addition,  HCFA has adopted new regulations  expanding the
ability of HCFA and the states to impose  civil money  penalties in instances of
noncompliance.  Medicare/Medicaid  survey  results for each  facility  are being
posted on the Internet.  A  newly-enacted  federal law  prohibits  nursing homes
which reduce their  Medicaid  participation  from evicting  Medicaid  residents.
Federal  efforts to target fraud and abuse and kickback  violations  by Medicare
and Medicaid providers have also increased. An adverse determination  concerning
any operator's  licensure or eligibility  for  government  reimbursement  or its
compliance with  applicable  federal or state statutes on regulations may affect
such operator and its  affiliates and may affect their ability to pay their rent
or mortgage interest income.

         A number of  legislative  proposals  that would affect major reforms of
the health care system have been  introduced  in  Congress,  such as  additional
Medicare and Medicaid reforms and cost containment  measures.  We cannot predict
whether any such  legislative  proposals  will be adopted  or, if adopted,  what
effect,  if  any,  such  proposals  would  have  on  our  business,  lessees  or
mortgagors.

Competition.

         We compete  with other real  estate  investment  trusts in that each is
continually  seeking  attractive  investment  opportunities in office and senior
housing  facilities and other types of real estate.  We also compete with banks,
non-bank finance companies, leasing companies and insurance companies.

                        FEDERAL INCOME TAX CONSIDERATIONS

         The following summary of federal income tax  considerations is based on
existing  law, and is limited to investors  who own our shares as an  investment
asset rather than as inventory or as property  used in a trade or business.  The
summary does not discuss the particular tax consequences  that might be relevant
to you if you are subject to special rules under the federal income tax law, for
example if you are:

         -        a bank, life insurance company,  regulated investment company,
                  or other financial institution,

         -        a broker or dealer in securities or foreign currency,

         -        a person that has a  functional  currency  other than the U.S.
                  dollar,

         -        a person  who  acquires  our  shares  in  connection  with his
                  employment or other performance of services,

         -        a person subject to alternative minimum tax,

         -        a person  who owns our shares as part of a  straddle,  hedging
                  transaction, or conversion transaction, or

         -        except as specifically  described in the following  summary, a
                  tax-exempt entity or a foreign person.


The  sections of the Internal  Revenue  Code that govern the federal  income tax
qualification  and  treatment of a REIT and its  shareholders  are complex.  The
following  summary  is  thus  qualified  by  applicable  Internal  Revenue  Code
provisions,  related  rules and  regulations  and  administrative  and  judicial
interpretations,  all of which are subject to change,  possibly with retroactive
effect.  Thus,  future  legislative,  judicial,  or  administrative  actions  or
decisions  could  affect the accuracy of  statements  made in this  summary.  No
ruling has been sought from the  Internal  Revenue  Service  with respect to any
matter described in this summary,  and there can be no assurance that the IRS or
a court will agree with the statements  made in this summary.  In addition,  the
following summary is not exhaustive of all possible tax considerations, and does
not  discuss any state,  local,  or foreign  tax  considerations.  For all these
reasons,  we urge you to consult with your tax advisor about the federal  income
tax and other tax consequences of the acquisition,  ownership and disposition of
our shares.


                                       5




         For purposes of this summary, you are a "U.S. shareholder" if you are a
beneficial owner of our shares and for federal income tax purposes are:

         (1)      a citizen or resident of the United States,

         (2)      a  corporation,  partnership  or  other  entity  treated  as a
                  corporation  or  partnership  for federal income tax purposes,
                  that is  created  or  organized  in or  under  the laws of the
                  United States,  any state thereof or the District of Columbia,
                  unless otherwise provided by Treasury regulations,

         (3)      an estate the  income of which is  subject  to federal  income
                  taxation regardless of its source, or

         (4)      a  trust  if a  court  within  the  United  States  is able to
                  exercise primary  supervision over the  administration  of the
                  trust and one or more United States persons have the authority
                  to control all substantial decisions of the trust, or electing
                  trusts in existence on August 20, 1996 to the extent  provided
                  in Treasury regulations.

Conversely,  you are a "non-U.S.  shareholder" if you are a beneficial  owner of
our shares and are not a U.S. shareholder.

Taxation as a REIT

         We have elected to be taxed as a REIT under Sections 856 through 860 of
the Internal Revenue Code,  commencing with our taxable year ending December 31,
1987. Our REIT election,  assuming continuing compliance with the federal income
tax  qualification  tests summarized  below,  continues in effect for subsequent
taxable  years.  Although  no  assurance  can be given,  we believe  that we are
organized,  have  operated,  and will  continue  to  operate  in a  manner  that
qualifies us to be taxed under the Internal Revenue Code as a REIT.

         As a REIT,  we generally  will not be subject to federal  income tax on
our net income  distributed as dividends to our  shareholders.  Distributions to
our  shareholders  generally  will be includable in their income as dividends to
the extent the  distributions do not exceed our current or accumulated  earnings
and  profits.  A portion of these  dividends  may be  treated  as  capital  gain
dividends,  as explained  below.  No portion of these dividends will be eligible
for the dividends received deduction for corporate  shareholders.  Distributions
in excess of our current or accumulated  earnings and profits  generally will be
treated for federal  income tax purposes as a return of capital to the extent of
a shareholder's  basis in its shares, and will reduce this basis. Our current or
accumulated   earnings  and  profits  will  generally  be  allocated   first  to
distributions  on our outstanding  preferred  shares,  if any, and thereafter to
distributions  on our common shares.  For tax purposes,  our  distributions  per
common share paid in 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
1997 and 1998 aggregated $1.085,  $.840,  $1.13,  $1.16,  $1.22,  $1.25,  $1.29,
$1.32, $1.37, $1.41, $1.45 and $1.51 respectively, of which $.289, $.065, $.332,
$.267,  $.104,  $.218, $.335, $.081, $.161, $.350, $.252 and $.096 respectively,
represented  a  return  of  capital.   The  federal   income   taxation  of  our
distributions  to you is discussed in more detail in the  following  sections of
this summary.

         Our  counsel,  Sullivan & Worcester  LLP,  has opined that we have been
organized and have  qualified as a REIT under the Internal  Revenue Code for our
1987 through 1998 taxable years,  and that our current  investments  and plan of
operation will enable us to continue to meet the requirements for  qualification
and  taxation as a REIT under the  Internal  Revenue  Code.  These  opinions are
conditioned  upon the assumption  that our leases,  our declaration of trust and
by-laws, and all other legal documents to which we are or have been a party have
been and will be  complied  with by all  parties  to these  documents,  upon the
accuracy  and  completeness  of the  factual  matters  described  in this Annual
Report, and upon representations made by us. The opinion of Sullivan & Worcester
LLP is  based  on the law as it  exists  today,  but the law may  change  in the
future,  possibly with  retroactive  effect.  Also, an opinion of counsel is not
binding on the Internal  Revenue  Service or the courts,  and the IRS or a court
could take a position different from that expressed by counsel.

         Our  qualification  and taxation as a REIT will depend upon our ability
to meet the various REIT qualification  tests imposed under the Internal Revenue
Code and  summarized  below.  While we believe  that we have  operated  and will
continue to operate in a manner to satisfy the various REIT qualification tests,
Sullivan & Worcester  LLP has not  reviewed  and will not review our  compliance
with these tests on a continuing  basis.  If we fail to qualify as a REIT in any
year,  we will be subject to federal  income  taxation  as if we were a domestic
corporation,  and our shareholders  will be taxed like  shareholders of ordinary
corporations. In this event, we could be subject to significant tax liabilities,
and the amount of cash available for  distribution  to our  shareholders  may be
reduced or eliminated.


                                       6


         If we qualify for taxation as a REIT and distribute to our shareholders
at least 95% of our "real estate  investment trust taxable income,"  computed by
excluding any net capital gain and before taking into account any dividends paid
deduction for which we are eligible, we generally will not be subject to federal
corporate income taxes on the amount  distributed.  However,  even if we qualify
for federal  income  taxation as a REIT, we may be subject to federal tax in the
following circumstances:

         -        We  will  be  taxed  at   regular   corporate   rates  on  any
                  undistributed  "real estate  investment trust taxable income,"
                  including our undistributed net capital gains.

         -        If our alternative  minimum taxable income exceeds our taxable
                  income, we may be subject to the corporate alternative minimum
                  tax on items of tax preference.

         -        If we have (1) net income  from the sale or other  disposition
                  of  "foreclosure  property" that is held primarily for sale to
                  customers  in the  ordinary  course of  business  or (2) other
                  nonqualifying  income from  foreclosure  property,  we will be
                  subject to tax on this income at the highest regular corporate
                  rate, which is currently 35%.

         -        If we have net income from prohibited transactions,  including
                  sales or other  dispositions  of  inventory  or property  held
                  primarily  for sale to  customers  in the  ordinary  course of
                  business other than foreclosure property,  this income will be
                  subject to tax at a 100% rate.

         -        If we fail to  satisfy  the 75% gross  income  test or the 95%
                  gross income test discussed  below,  but nonetheless  maintain
                  our  qualification  as a REIT,  we will be subject to tax at a
                  100% rate on the  greater  of the  amount by which we fail the
                  75% or the 95% test,  multiplied  by a  fraction  intended  to
                  reflect our profitability.

         -        If we fail to  distribute  for any calendar  year at least the
                  sum of (1) 85% of our REIT ordinary  income for that year, (2)
                  95% of our REIT capital gain net income for that year, and (3)
                  any undistributed  taxable income from prior periods,  we will
                  be subject  to a 4% excise  tax on the excess of the  required
                  distribution over the amounts actually distributed.

         -        If we acquire an asset from a corporation  in a transaction in
                  which our basis in the asset is determined by reference to the
                  basis of the  asset  in the  hands of a  present  or  former C
                  corporation,  and if we  subsequently  recognize  gain  on the
                  disposition of this asset during the ten-year period beginning
                  on the date on which  the  asset  ceased  to be owned by the C
                  corporation,  then we  will  pay  tax at the  highest  regular
                  corporate tax rate,  which is currently  35%, on the lesser of
                  (1) the excess of the fair market  value of the asset over the
                  C  corporation's  basis in the  asset  on the  date the  asset
                  ceased  to be  owned by the C  corporation  or (2) the gain we
                  recognize in the disposition.

         If we invest in properties in foreign countries, our profits from these
investments  will  generally  be subject  to tax in the  countries  where  those
properties  are located.  The nature and amount of this  taxation will depend on
the laws of the countries where the properties are located.  If we operate as we
currently   intend,   then  our  taxable  income  will  be  distributed  to  our
shareholders  and we will not pay  federal  corporate  income  tax,  and thus we
generally  cannot  recover  the cost of foreign  taxes  imposed  on our  foreign
investments  by  claiming  foreign tax  credits  against our federal  income tax
liability.  We will also not be able to pass  through  to our  shareholders  any
foreign tax credits.

         If we fail to qualify  for  federal  income  taxation  as a REIT in any
taxable year,  then we will be subject to federal taxes in the same manner as an
ordinary corporation.  Distributions to our shareholders in any year in which we
fail  to  qualify  as a REIT  will  not be  deductible  by us,  nor  will  these
distributions  be  required  to be made.  In that  event,  to the  extent of our
current  and  accumulated   earnings  and  profits,  all  distributions  to  our
shareholders  will be  taxable  as  ordinary  dividend  income,  and  subject to
limitations  in the Internal  Revenue  Code will be eligible  for the  dividends
received  deduction for  corporations.  We would also generally be  disqualified
from  federal  income  taxation as a REIT for the four taxable  years  following
disqualification.  Failure to qualify for federal income  taxation as a REIT for
even  one  year  could  result  in our  incurring  substantial  indebtedness  or
liquidating   substantial   investments   in   order   to  pay   the   resulting
corporate-level taxes.


                                       7




REIT Qualification Requirements

         General  Requirements.  Section  856(a) of the  Internal  Revenue  Code
defines a REIT as a corporation, trust or association:

         (1)      that is managed by one or more trustees or directors;

         (2)      the beneficial ownership of which is evidenced by transferable
                  shares or by transferable certificates of beneficial interest;

         (3)      that would be taxable, but for Sections 856 through 859 of the
                  Internal Revenue Code, as an ordinary domestic corporation;

         (4)      that is  neither  a  financial  institution  nor an  insurance
                  company subject to special  provisions of the Internal Revenue
                  Code;

         (5)      the  beneficial  ownership  of  which  is  held by 100 or more
                  persons;

         (6)      that is not  "closely  held" as  defined  under  the  personal
                  holding company stock ownership test, as described below; and

         (7)      that  meets  other   tests   regarding   income,   assets  and
                  distributions, all as described below.

Section 856(b) of the Internal Revenue Code provides that conditions (1) to (4),
inclusive,  must be met during the entire  taxable year and that  condition  (5)
must be met during at least 335 days of a taxable year of 12 months, or during a
proportionate  part of a taxable year of less than 12 months.  Section 856(h)(2)
of the Internal  Revenue Code provides that  conditions  (5) and (6) need not be
met for our first  taxable  year as a REIT.  We believe  that we have  satisfied
conditions (1) to (6),  inclusive,  during the requisite periods for each of our
taxable years ending on or before  December 31, 1998,  and that we will continue
to satisfy those conditions.
There can, however, be no assurance in this regard.

         By reason of condition (6) above, we will fail to qualify as a REIT for
a taxable  year if at any time during the last half of the year more than 50% in
value of our outstanding shares is owned directly or indirectly by five or fewer
individuals.  To help  comply  with  condition  (6),  our  declaration  of trust
contains provisions  restricting transfers of our shares and giving the trustees
the power to redeem our shares.  In addition,  commencing  with our 1998 taxable
year, if we comply with applicable  Treasury  regulations for  ascertaining  the
ownership of our  outstanding  shares and do not know, or exercising  reasonable
diligence would not have known, whether we failed condition (6), then we will be
treated as  satisfying  condition  (6).  Also,  our failure to comply with these
applicable  Treasury  regulations for ascertaining  ownership of our outstanding
shares may  result in a penalty to us of  $25,000,  or $50,000  for  intentional
violations.  Accordingly,  we intend to comply  with these  applicable  Treasury
regulations, and request annually from record holders of significant percentages
of our shares  information  regarding  the  ownership  of our shares.  Under our
declaration of trust, our shareholders are required to respond to these requests
for information.

         The rule that an entity  will fail to  qualify  as a REIT for a taxable
year if at any time  during  the last half of the year more than 50% in value of
its  outstanding  shares  is  owned  directly  or  indirectly  by five or  fewer
individuals  is relaxed in the case of pension  trusts  owning shares in a REIT.
Shares in a REIT held by a pension  trust are  treated as held  directly  by the
pension trust's  beneficiaries in proportion to their actuarial interests in the
pension  trust.  Consequently,  five or fewer pension trusts could own more than
50% of the interests in an entity  without  jeopardizing  that entity's  federal
income tax qualification as a REIT.  However, as discussed below, if the REIT is
a  "pension-held  REIT," each  pension  trust owning more than 10% of the REIT's
shares by value  generally will be taxed on a portion of the dividends  received
from the REIT,  based on the ratio of (1) the REIT's  gross  income for the year
that would be  unrelated  trade or business  income if the REIT were a qualified
pension trust to (2) the REIT's total gross income for the year.

         Our Wholly-Owned  Subsidiaries.  Section 856(i) of the Internal Revenue
Code provides that any corporation  100% of whose stock is held by the REIT is a
qualified REIT  subsidiary  and shall not be treated as a separate  corporation.
The  assets,  liabilities  and  items of  income,  deduction,  and  credit  of a
qualified REIT subsidiary are treated as the REIT's. We believe that each of our
direct  and  indirect  wholly-owned  subsidiaries  is  either a  qualified  REIT
subsidiary within the meaning of Section 856(i) of the Internal Revenue Code, or
a  noncorporate  entity that for federal  income tax  purposes is not treated as
separate  from its owner  pursuant  to


                                       8

regulations  under Section 7701 of the Internal  Revenue Code. Thus, in applying
all the federal  income tax REIT  qualification  requirements  described in this
summary, our direct and indirect wholly-owned  subsidiaries are ignored, and all
assets,  liabilities and items of income, deduction and credit of our direct and
indirect wholly-owned subsidiaries are treated as ours.

         Our  Investments  through  Partnerships.  We have invested,  and in the
future may invest,  in real estate through one or more limited  partnerships  or
limited liability  companies that are treated as partnerships for federal income
tax  purposes.  In the  case  of a REIT  that  is a  partner  in a  partnership,
regulations  under the Internal  Revenue Code provide that,  for purposes of the
REIT qualification requirements regarding income and assets discussed below, the
REIT is deemed to own its  proportionate  share of the assets of the partnership
corresponding  to the REIT's  proportionate  capital interest in the partnership
and is deemed to be entitled to the income of the  partnership  attributable  to
this proportionate share. In addition,  for these purposes, the character of the
assets and gross income of the partnership  generally  retain the same character
in the hands of the REIT.  Accordingly,  our proportionate  share of the assets,
liabilities,  and items of income of each  partnership in which we are a partner
are treated as ours for purposes of the income  tests and asset tests  discussed
below.  In contrast,  for  purposes of the  distribution  requirement  discussed
below,  we must take into  account as a partner  our  distributive  share of the
partnership's  income as determined  under the general  federal income tax rules
governing  partners  and  partnerships  under  Sections  701  through 777 of the
Internal Revenue Code.

         Income  Tests.  There have been three  gross  income  requirements  for
qualification  as a REIT under the Internal Revenue Code, but only the first two
still apply in our current taxable years:

         -        First,  at least  75% of our  gross  income,  excluding  gross
                  income  from  sales or other  dispositions  of  property  held
                  primarily for sale, must be derived from investments  relating
                  to real  property,  including  "rents from real  property"  as
                  defined  under  Section  856 of  the  Internal  Revenue  Code,
                  mortgages on real property,  or shares in other REITs. When we
                  receive new capital in exchange  for our shares or in a public
                  offering  of  five-year  or longer  debt  instruments,  income
                  attributable  to the temporary  investment of this new capital
                  in stock or a debt  instrument,  if received or accrued within
                  one year of our receipt of the new capital,  is generally also
                  qualifying income under the 75% test.

         -        Second,  at least 95% of our  gross  income,  excluding  gross
                  income  from  sales or other  dispositions  of  property  held
                  primarily for sale,  must be derived from a combination of (1)
                  items  of real  property  income  that  satisfy  the 75%  test
                  described  above,  (2) dividends,  (3) interest,  (4) payments
                  under interest rate swap or cap agreements,  options,  futures
                  contracts,  forward  rate  agreements,  or  similar  financial
                  instruments,  and (5) gain  from the  sale or  disposition  of
                  stock, securities, or real property.

         -        Third, for our 1997 and prior taxable years,  less than 30% of
                  our gross income must have been  derived  from (1)  short-term
                  gain  from  the  sale  or  other   disposition   of  stock  or
                  securities,  including stock in other REITs or dispositions of
                  interest  rate  swap  or cap  agreements,  and (2)  gain  from
                  prohibited transactions or other dispositions of real property
                  held  for  less  than  four  years,   other  than  involuntary
                  conversions and sales of foreclosure property.

For  purposes  of  these  three  requirements,  income  derived  from a  "shared
appreciation  provision"  in a  mortgage  loan  is  generally  treated  as  gain
recognized on the sale of the property to which it relates. Although we will use
our best efforts to ensure that the income  generated by our investments will be
of a type which satisfies both the 75% and 95% gross income tests,  there can be
no assurance in this regard.

         In order to qualify as "rents from real property"  under Section 856 of
the Internal Revenue Code, several requirements must be met:

         -        First,  the  amount  of rent  received  generally  must not be
                  determined  from the income or profits of any person,  but may
                  be based on receipts or sales.

         -        Second,  rents do not  qualify if the REIT owns 10% or more of
                  the  tenant,   whether   directly  or  after   application  of
                  attribution  rules.  While we intend not to lease  property to
                  any party if rents  from that  property  would not  qualify as
                  rents from real  property,  application  of the 10%  ownership
                  rule  is  dependent   upon  complex   attribution   rules  and
                  circumstances  that may be beyond our  control.  For  example,
                  ownership  directly or by attribution by an unaffiliated third
                  party of more than 10% of our  shares and more than 10% of the
                  stock of one of our  lessees  would  result  in this  lessee's

                                        9

                  rents  not  qualifying  as  rents  from  real  property.   Our
                  declaration  of trust  provides  that  transfers  or purported
                  acquisitions, directly or by attribution, of shares that could
                  result in our  disqualification  as a REIT under the  Internal
                  Revenue  Code are null and void and  permits  the  trustees to
                  repurchase  shares to the extent  necessary  to  maintain  our
                  status  as  a  REIT   under   the   Internal   Revenue   Code.
                  Nevertheless,  there can be no assurance that these provisions
                  in our  declaration  of trust will be effective to prevent our
                  REIT  status  under  the  Internal  Revenue  Code  from  being
                  jeopardized under the 10% lessee affiliate rule.  Furthermore,
                  there can be no assurance  that we will be able to monitor and
                  enforce  these   restrictions,   nor  will  our   shareholders
                  necessarily be aware of ownership of shares attributed to them
                  under the Internal Revenue Code's attribution rules.

         -        Third,  in order for rents to qualify,  we generally  must not
                  manage  the  property  or furnish  or render  services  to the
                  tenants  of  the  property,   except  through  an  independent
                  contractor  from  whom  we  derive  no  income.  There  is  an
                  exception to this rule permitting a REIT to perform  customary
                  tenant  services of the sort which a  tax-exempt  organization
                  could  perform   without   being   considered  in  receipt  of
                  "unrelated  business  taxable  income"  as  defined in Section
                  512(b)(3) of the Internal  Revenue Code. In addition,  for our
                  1998  and  later  taxable   years,  a  de  minimis  amount  of
                  noncustomary  services  will not  disqualify  income as "rents
                  from real property" so long as the value of the  impermissible
                  services  does  not  exceed  1% of  the  gross  income  of the
                  property.

         -        Fourth,  if rent  attributable to personal  property leased in
                  connection with a lease of real property is 15% or less of the
                  total  rent   received   under  the   lease,   then  the  rent
                  attributable  to personal  property will qualify as rents from
                  real property; but if this 15% threshold is exceeded, the rent
                  attributable  to personal  property  will not so qualify.  The
                  portion of rental income treated as  attributable  to personal
                  property is determined according to the ratio of the tax basis
                  of the  personal  property  to the total tax basis of the real
                  and personal property which is rented.

Substantially all of our gross income has been and is expected to continue to be
attributable  to rental  income.  We believe that all or  substantially  all our
rents have  qualified  and will  continue to qualify as rents from real property
for purposes of Section 856 of the Internal Revenue Code, but if for some reason
a significant amount of our rents do not so qualify,  we may fail the 95% or 75%
gross income tests.

         In order to qualify as mortgage  interest on real property for purposes
of the 75% test,  interest  must  derive  from a mortgage  loan  secured by real
property  with a fair market value at least equal to the amount of the loan.  If
the amount of the loan exceeds the fair market value of the real  property,  the
interest  will be treated as interest on a mortgage loan in a ratio equal to the
ratio of the fair market  value of the real  property to the total amount of the
mortgage loan.

         Any gain we realize on the sale of property  held as inventory or other
property held primarily for sale to customers in the ordinary course of business
will be treated as income  from a  prohibited  transaction  that is subject to a
penalty tax at a 100% rate. This prohibited  transaction income also may have an
adverse  effect upon our ability to satisfy the 75% and 95% gross  income  tests
for federal income tax qualification as a REIT. We cannot provide  assurances as
to  whether  or not the IRS might  successfully  assert  that one or more of our
dispositions  is subject to the 100% penalty tax.  However,  we believe that any
occasional  disposition of real estate that we might make will not be subject to
the 100% penalty tax,  because we intend to: (1) own our real estate  assets for
investment with a view to long-term income production and capital  appreciation,
(2) engage in the business of developing, owning and operating our existing real
estate assets and acquiring,  developing, owning and operating other real estate
assets,  and (3) make occasional  dispositions of real estate assets  consistent
with our long-term investment objectives.

         If we fail to satisfy one or both of the 75% or 95% gross  income tests
for any taxable  year, we may  nevertheless  qualify as a REIT for that year if:
(1) our  failure  to meet the test was due to  reasonable  cause  and not due to
willful neglect,  (2) we report the nature and amount of each item of our income
included  in the 75% or 95%  gross  income  tests  for  that  taxable  year on a
schedule  attached to our tax return,  and (3) any incorrect  information on the
schedule  was not due to fraud with  intent to evade tax.  It is  impossible  to
state whether in all  circumstances  we would be entitled to the benefit of this
relief  provision  for the 75% and 95% gross income  tests.  Even if this relief
provision  did apply to us, a  special  tax  equal to 100% is  imposed  upon the
greater  of the  amount  by  which  we  failed  the 75%  test  or the 95%  test,
multiplied  by a fraction  intended  to reflect  our  profitability.  No similar
relief  provision  is  available  if we failed the 30% gross income test for any
taxable year in which that test was applicable.

         Asset Tests. At the close of each quarter of each taxable year, we must
also satisfy three percentage tests relating to the nature of our assets:

                                       10

         -        First,  at least  75% of the value of our  total  assets  must
                  consist of (1) real  estate  assets,  (2) cash and cash items,
                  (3) shares in other REITs, (4) government securities,  and (5)
                  stock or debt  instruments  purchased with proceeds of a stock
                  offering  or an  offering  of our debt with a term of at least
                  five years,  but only for the one-year period  commencing with
                  our receipt of the offering proceeds.

         -        Second,  not  more  than  25%  of  our  total  assets  may  be
                  represented  by securities  other than those  securities  that
                  count favorably toward the preceding 75% asset test.

         -        Third, of the investments  included in the preceding 25% asset
                  class,  the value of any one issuer's  securities  that we own
                  may not exceed 5% of the value of our total assets, and we may
                  not own more than 10% of any one issuer's  outstanding  voting
                  securities.

When a failure to satisfy the above asset tests results from an  acquisition  of
securities  or other  property  during a quarter,  the  failure  can be cured by
disposition of sufficient nonqualifying assets within 30 days after the close of
that quarter.  We have maintained and intend to continue to maintain  records of
the value of our assets to document  our  compliance  with the above three asset
tests, and to take actions as may be required to cure any failure to satisfy the
tests within 30 days after the close of any quarter.

         Annual Distribution Requirements. In order to qualify for taxation as a
REIT  under  the  Internal   Revenue  Code,  we  are  required  to  make  annual
distributions other than capital gain dividends to our shareholders in an amount
at least equal to the excess of:

         (A)      the  sum of  (1)  95% of our  "real  estate  investment  trust
                  taxable  income,"  as defined in Section  857 of the  Internal
                  Revenue  Code,  but computed  without  regard to the dividends
                  paid  deduction and net capital  gain,  and (2) 95% of our net
                  income  after  tax,  if  any,   from   property   received  in
                  foreclosure, over

         (B)      the sum of our qualifying noncash income, e.g., imputed rental
                  income or income from  transactions  inadvertently  failing to
                  qualify as like-kind exchanges.

These distributions must be paid in the taxable year to which they relate, or in
the following  taxable year if declared before we timely file our tax return for
the earlier taxable year and if paid on or before the first regular distribution
payment after that  declaration.  Dividends  declared in October,  November,  or
December  and paid during the  following  January will be treated as having been
both paid and received on December 31 of the prior taxable year. A  distribution
which is not pro rata within a class of our beneficial  interests  entitled to a
distribution,  or  which is not  consistent  with the  rights  to  distributions
between our classes of beneficial interests, is a preferential distribution that
is not taken into  consideration  for purposes of the distribution  requirement,
and  accordingly  the payment of a  preferential  distribution  could affect our
ability  to  meet  the  distribution   requirement.   Taking  into  account  our
distribution policies, including our dividend reinvestment plan, we believe that
we  have  not  made  and  expect   that  we  will  not  make  any   preferential
distributions.  The distribution requirements may be waived by the IRS if a REIT
establishes  that it failed to meet them by reason of  distributions  previously
made to meet the  requirements  of the 4% excise  tax  discussed  below.  To the
extent that we do not distribute all of our net capital gain and all of our real
estate investment trust taxable income,  as adjusted,  we will be subject to tax
on undistributed amounts.

         In  addition,  we will be  subject  to a 4% excise tax to the extent we
fail within a calendar year to make required  distributions  to our shareholders
of 85% of our  ordinary  income and 95% of our capital  gain net income plus the
excess,  if any, of the  "grossed up required  distribution"  for the  preceding
calendar year over the amount treated as distributed for that preceding calendar
year.  For this  purpose,  the term "grossed up required  distribution"  for any
calendar  year is the sum of our taxable  income for the  calendar  year without
regard to the deduction  for  dividends  paid and all amounts from earlier years
that are not treated as having been distributed under the provision.

         If we do not have  enough cash or other  liquid  assets to meet the 95%
distribution  requirements,  we may find it necessary to arrange for new debt or
equity financing to provide funds for required  distributions,  or else our REIT
status for federal income tax purposes could be  jeopardized.  We can provide no
assurance  that  financing  would be available  for these  purposes on favorable
terms.

         If we fail to distribute  sufficient  dividends for any year, we may be
able to rectify this failure by paying "deficiency dividends" to shareholders in
a later year.  These  deficiency  dividends may be included in our deduction for
dividends  paid for the earlier  year,  but an interest  charge would be imposed
upon us for the delay in  distribution.  

                                       11

Although  we may be  able  to  avoid  being  taxed  on  amounts  distributed  as
deficiency  dividends,  we will  remain  liable for the 4% excise tax  discussed
above.

Depreciation and Federal Income Tax Treatment of Leases

         For federal  income tax  purposes,  including for purposes of computing
our earnings and  profits,  we have  generally  elected to  depreciate  our real
property on a straight-line  basis over 40 years and our personal  property over
12 years.  We will be entitled to  depreciation  deductions  from our facilities
only if we are  treated  for  federal  income tax  purposes  as the owner of the
facilities.  This means that the leases of the facilities must be classified for
federal  income tax purposes as true  leases,  rather than as sales or financing
arrangements. As to approximately 0.7% of our leased facilities which constitute
personal property, it is not entirely clear that we will be treated as the owner
of this personal property.

         In the case of sale-leaseback  arrangements,  the IRS could assert that
we realized prepaid rental income in the year of purchase to the extent that the
value of a leased property exceeds our purchase price for that property. Because
of the lack of clear  precedent,  we cannot provide  assurances as to whether or
not the IRS might successfully  assert the existence of prepaid rental income in
our sale-leaseback transactions.

         Additionally,  Section 467 of the Internal Revenue Code, which concerns
leases with increasing rents, may apply to those of our leases which provide for
rents that  increase  from one period to the next.  Section 467 of the  Internal
Revenue Code  provides that in the case of a so-called  "disqualified  leaseback
agreement,"  rental income must be accrued at a constant  rate.  Where  constant
rent  accrual is  required,  we could  recognize  rental  income from a lease in
excess of cash rents and, as a result,  encounter  difficulty in meeting the 95%
distribution requirement.  "Disqualified leaseback agreements" include leaseback
transactions  where a principal purpose for providing  increasing rent under the
agreement is the  avoidance of federal  income tax.  Because  Section 467 of the
Internal Revenue Code directs the Treasury to issue  regulations  providing that
rents will not be treated as  increasing  for tax avoidance  purposes  where the
increases  are based upon a fixed  percentage  of lessee  receipts,  and because
regulations  proposed to be effective for  "disqualified  leaseback  agreements"
entered into after June 3, 1996 adopt this rule, the additional  rent provisions
in our leases that are based on a fixed percentage of lessee receipts  generally
should  not  cause the  leases to be  "disqualified  leaseback  agreements."  In
addition,  the legislative  history of Section 467 of the Internal  Revenue Code
indicates  that  the  Treasury  should  issue  regulations  under  which  leases
providing for fluctuations in rents by no more than a reasonable percentage from
the average rent payable over the term of the lease will be deemed not motivated
by tax avoidance, and the proposed regulations permit a 10% fluctuation.

Taxation of U.S. Shareholders

         As long as we qualify as a REIT for  federal  income  tax  purposes,  a
distribution  by us to our  U.S.  shareholders  that  we do not  designate  as a
capital  gain  dividend  will be treated as an ordinary  income  dividend to the
extent that it is made out of our current or  accumulated  earnings and profits.
Distributions  made out of our current or accumulated  earnings and profits that
we properly  designate  as capital  gain  dividends  will be taxed as  long-term
capital gains,  as discussed  below, to the extent they do not exceed our actual
net capital gain for the taxable year. However,  corporate U.S. shareholders may
be required to treat up to 20% of any capital gain  dividend as ordinary  income
under  Section  291 of the Tax Code.  In  addition,  we may elect to retain  net
capital gain income and treat it as constructively distributed. In that case,

         (1)      we will be taxed at regular  corporate capital gains tax rates
                  on retained amounts,

         (2)      each  U.S.   shareholder  will  be  taxed  on  its  designated
                  proportionate  share  of our  retained  net  capital  gains as
                  though that amount were  distributed  and designated a capital
                  gain dividend,

         (3)      each U.S. shareholder will receive a credit for its designated
                  proportionate share of the tax that we pay,

         (4)      each U.S.  shareholder will increase its adjusted basis in our
                  shares by the excess of the amount of its proportionate  share
                  of these  retained  net capital  gains over its  proportionate
                  share of this tax that we pay, and

         (5)      both  we  and  our  corporate  U.S.   shareholders  will  make
                  commensurate   adjustments  in  our  respective  earnings  and
                  profits for federal income tax purposes.

If we elect to retain our net capital gain in this fashion,  we will notify U.S.
shareholders of the relevant tax  information  within 60 days after the close of
the affected  taxable year.  Because we are a REIT,  neither our ordinary 


                                       12

income  dividends nor our capital gain  dividends will qualify for any dividends
received deduction for our corporate U.S. shareholders.

         For  noncorporate  U.S.  shareholders,   long-term  capital  gains  are
generally  taxed  at  maximum  rates of 20% or 25%,  depending  upon the type of
property  disposed of and the previously  claimed  depreciation  with respect to
this property at the time of  disposition.  If for any taxable year we designate
as capital gain  dividends any portion of the dividends  paid or made  available
for the year to our  shareholders,  including our retained capital gains treated
as capital gain  dividends,  then the portion of the capital  gain  dividends so
designated  that will be allocated  to the holders of a particular  class of our
shares will on a percentage basis equal the ratio of (1) the amount of the total
dividends  paid or made  available  for the year to the holders of that class of
shares,  to (2) the  total  dividends  paid or made  available  for the  year to
holders of all classes of our shares. We will similarly designate the portion of
any capital gain dividend that is to be taxed to noncorporate U.S.  shareholders
at the maximum rates of 20% or 25% so that the designations will be proportional
among all classes of our shares.

         Distributions in excess of current or accumulated  earnings and profits
will not be taxable to a U.S.  shareholder to the extent that they do not exceed
the U.S.  shareholder's  adjusted basis in our shares,  but will reduce the U.S.
shareholder's basis in our shares. To the extent that these excess distributions
exceed the adjusted basis of a U.S.  shareholder's shares, they will be included
in income as capital gain,  with long-term gain generally  taxed to noncorporate
U.S.  shareholders at a maximum rate of 20%. No U.S.  shareholder may include on
his  federal  income tax return  any of our net  operating  losses or any of our
capital losses.

         Dividends that we declare in October, November or December of a taxable
year to  shareholders of record on a date in those months will be deemed to have
been received by shareholders  on December 31 of that taxable year,  provided we
actually pay these dividends during the following January.  Also, items that are
treated  differently for regular and alternative  minimum tax purposes are to be
allocated between a REIT and its shareholders  under Treasury  regulations which
are to be  prescribed.  It is possible  that these  Treasury  regulations  would
require tax preference items to be allocated to our shareholders with respect to
any accelerated depreciation or other tax preference items that we claim.

         The sale or exchange of our shares will result in  recognition  of gain
or loss to a U.S.  shareholder in an amount equal to the difference  between the
amount realized and the U.S.  shareholder's adjusted basis in the shares sold or
exchanged. This gain or loss will be capital gain or loss, and will be long-term
capital  gain or loss if the U.S.  shareholder's  holding  period in the  shares
exceeds  one  year.   Long-term   capital  gains  will  generally  be  taxed  to
noncorporate U.S.  shareholders at a maximum rate of 20%. In addition,  any loss
upon a sale or  exchange  of our shares by a U.S.  shareholder  who has held our
shares for six months or less will  generally be treated as a long-term  capital
loss to the  extent of our  distributions  required  to be  treated  by the U.S.
shareholder as long-term capital gain. The relevant  six-month holding period is
determined  after  applying the holding  period  rules under  Section 857 of the
Internal Revenue Code.

         U.S.  shareholders  other than corporations who borrow funds to finance
their  acquisition  of our shares  could be limited in the amount of  deductions
allowed for the interest paid on the indebtedness incurred. Under Section 163(d)
of the Internal Revenue Code, interest paid or accrued on indebtedness  incurred
or  continued to purchase or carry  property  held for  investment  is generally
deductible  only to the extent of the investor's net investment  income.  A U.S.
shareholder's  net  investment  income will  include  ordinary  income  dividend
distributions and, if an appropriate  election is made by the U.S.  shareholder,
capital gain dividend  distributions  received from us;  however,  distributions
treated as a nontaxable  return of the U.S.  shareholder's  basis will not enter
into the computation of net investment income. Under Section 469 of the Internal
Revenue Code, U.S.  shareholders,  except for  corporations  that are other than
closely held C corporations or personal service corporations, generally will not
be entitled to deduct losses from  so-called  passive  activities  except to the
extent of their  income from  passive  activities.  For purposes of these rules,
distributions  received  by a U.S.  shareholder  from us will not be  treated as
income from a passive  activity  and thus will not be available to offset a U.S.
shareholder's passive activity losses.

Taxation of Tax-Exempt U.S. Shareholders

         In Revenue Ruling 66-106,  the IRS ruled that amounts  distributed by a
REIT to a tax-exempt  employees'  pension  trust did not  constitute  "unrelated
business  taxable  income,"  even  though  the REIT may have  financed  some its
activities  with   acquisition   indebtedness.   Although  revenue  rulings  are
interpretive  in nature and subject to  revocation or  modification  by the IRS,
based  upon  the  analysis  and  conclusion  of  Revenue   Ruling  66-106,   our
distributions  made to U.S.  shareholders  that are  tax-exempt  pension  plans,
individual  retirement accounts,  or other qualifying tax-exempt entities should
not constitute  unrelated business taxable income,  unless the U.S.  shareholder



                                       13

has  financed  its  acquisition  of our shares with  "acquisition  indebtedness"
within the meaning of the Internal  Revenue  Code,  or our shares are  otherwise
used in an unrelated trade or business conducted by the U.S.
shareholder.

         Special rules apply to tax-exempt pension trusts,  including  so-called
401(k) plans but excluding individual  retirement accounts or government pension
plans,  that own more  than  10% by value of a  "pension-held  REIT" at any time
during a taxable  year.  The pension trust may be required to treat a percentage
of all  dividends  received  from  the  pension-held  REIT  during  the  year as
unrelated business taxable income. This percentage is equal to the ratio of

         (1)      the pension-held  REIT's gross income derived from the conduct
                  of  unrelated  trades  or  businesses,  determined  as if  the
                  pension-held REIT were a tax-exempt  pension fund, less direct
                  expenses related to that income, to

         (2)      the  pension-held  REIT's gross income from all sources,  less
                  direct expenses related to that income,

except that this percentage shall be deemed to be zero unless it would otherwise
equal  or  exceed  5%.  A REIT  is a  pension-held  REIT  if  (a)  the  REIT  is
"predominantly  held" by  tax-exempt  pension  trusts,  and (b) the  REIT  would
otherwise fail to satisfy the "closely  held"  ownership  requirement  discussed
above if the  stock or  beneficial  interests  in the  REIT  held by  tax-exempt
pension  trusts were viewed as held by tax-exempt  pension trusts rather than by
their  respective  beneficiaries.  A REIT is  predominantly  held by  tax-exempt
pension  trusts if at least one  tax-exempt  pension trust owns more than 25% by
value of the REIT's stock or beneficial interests,  or if one or more tax-exempt
pension  trusts,  each  owning  more  than 10% by value of the  REIT's  stock or
beneficial interests,  own in the aggregate more than 50% by value of the REIT's
stock or beneficial interests. Because of the restrictions in our declaration of
trust regarding the ownership  concentration  of our shares,  we believe that we
are not and will not be a  pension-held  REIT.  However,  because our shares are
publicly  traded,  we cannot  completely  control  whether or not we are or will
become a pension-held REIT.

Taxation of Non-U.S. Shareholders

         The  rules   governing   the  federal   income   taxation  of  non-U.S.
shareholders  are complex,  and the  following  discussion is intended only as a
summary of these rules.  If you are a non-U.S.  shareholder,  you should consult
with your own tax advisor to determine the impact of federal,  state, local, and
foreign  tax  laws,   including  any  tax  return  filing  and  other  reporting
requirements, with respect to your investment in our shares.

         In general,  a non-U.S.  shareholder will be subject to regular federal
income  tax in the same  manner as our U.S.  shareholders  with  respect  to its
investment in our shares if that  investment is  effectively  connected with the
non-U.S.  shareholder's  conduct of a trade or business in the United States. In
addition,  a corporate  non-U.S.  shareholder that receives income that is or is
deemed  effectively  connected with a trade or business in the United States may
also be subject to the 30% branch profits tax under Section 884 of the Tax Code,
which is payable in  addition  to regular  federal  corporate  income  tax.  The
balance  of  this   discussion  on  the  federal  income  taxation  of  non-U.S.
shareholders addresses only those non-U.S.  shareholders whose investment in our
shares is not  effectively  connected with the conduct of a trade or business in
the United States.

         A distribution by us to a non-U.S. shareholder that is not attributable
to gain  from  the  sale or  exchange  by us of a United  States  real  property
interest and that is not  designated  by us as a capital gain  dividend  will be
treated as an  ordinary  income  dividend  to the extent  that it is made out of
current or accumulated  earnings and profits.  A distribution  of this type will
generally be subject to federal  income tax and  withholding at the rate of 30%,
or the  lower  rate  that  may be  specified  by a tax  treaty  if the  non-U.S.
shareholder has in the manner prescribed by the IRS demonstrated its entitlement
to benefits  under a tax  treaty.  Because we cannot  determine  our current and
accumulated earnings and profits until the end of our taxable year,  withholding
at the rate of 30% or applicable  lower treaty rate will be imposed on the gross
amount of any  distribution  to a non-U.S.  shareholder  that we make and do not
designate  a  capital  gain  dividend.   Notwithstanding   this  withholding  on
distributions  in excess of our current and  accumulated  earnings  and profits,
these  distributions  are a nontaxable return of capital to the extent that they
do not exceed the non-U.S.  shareholder's  adjusted basis in our shares, and the
nontaxable  return of capital will reduce the adjusted basis in these shares. To
the extent that distributions in excess of current and accumulated  earnings and
profits  exceed the non-U.S.  shareholder's  adjusted  basis in our shares,  the
distributions will give rise to tax liability if the non-U.S.  shareholder would
otherwise be subject to tax on any gain from the sale or exchange of our shares,
as discussed below. A non-U.S. shareholder may seek a refund of amounts withheld
on  distributions  to him in excess of our current and accumulated  earnings and
profits, provided that the required information is furnished to the IRS.


                                       14

         For any year in which we qualify as a REIT, our distributions  that are
attributable  to gain from the sale or exchange of a United States real property
interest  are taxed to a non-U.S.  shareholder  as if these  distributions  were
gains  effectively  connected  with a trade or  business  in the  United  States
conducted by the non-U.S. shareholder.  Accordingly, a non-U.S. shareholder will
be taxed on these amounts at the normal capital gain rates  applicable to a U.S.
shareholder,  subject to any  applicable  alternative  minimum tax and a special
alternative  minimum  tax in the  case of  nonresident  alien  individuals;  the
non-U.S.  shareholder  would be required to file a United States  federal income
tax return reporting these amounts, even if applicable  withholding were imposed
as described below; and corporate  non-U.S.  shareholders may owe the 30% branch
profits tax under  Section 884 of the Tax Code in respect of these  amounts.  We
will be required to withhold from  distributions to non-U.S.  shareholders,  and
remit to the IRS, 35% of the maximum  amount of any  distribution  that could be
designated by us as a capital gain dividend.  In addition,  for purposes of this
withholding rule, if we designate prior distributions as capital gain dividends,
then  subsequent  distributions  up  to  the  amount  of  the  designated  prior
distributions  will be treated as capital gain dividends.  The amount of any tax
withheld is creditable  against the non-U.S.  shareholder's  federal  income tax
liability, and any amount of tax withheld in excess of that tax liability may be
refunded provided that an appropriate claim for refund is filed with the IRS. If
for any taxable year we designate as capital gain  dividends  any portion of the
dividends paid or made available for the year to our shareholders, including our
retained  capital gains treated as capital gain  dividends,  then the portion of
the capital gain  dividends so designated  that will be allocated to the holders
of a particular  class of our shares will on a percentage  basis equal the ratio
of (1) the amount of the total  dividends paid or made available for the year to
the  holders of that class of shares,  to (2) the total  dividends  paid or made
available for the year to holders of all classes of our shares.

         Tax   treaties   may  reduce  the   withholding   obligations   on  our
distributions.   Under  some  treaties,   however,  rates  below  30%  generally
applicable to ordinary income dividends from United States  corporations may not
apply to ordinary income dividends from a REIT. If the amount of tax withheld by
us  with  respect  to a  distribution  to a  non-U.S.  shareholder  exceeds  the
shareholder's federal income tax liability with respect to the distribution, the
non-U.S.  shareholder  may file for a refund of the excess from the IRS. In this
regard,  note  that the 35%  withholding  tax  rate on  capital  gain  dividends
corresponds  to the maximum  income tax rate  applicable  to corporate  non-U.S.
shareholders  but is higher than the 20% and 25% maximum  rates on capital gains
generally applicable to noncorporate non-U.S. shareholders.  Generally effective
with  respect to  distributions  paid after  December  31,  1999,  new  Treasury
regulations  alter  the  information  reporting  and  backup  withholding  rules
applicable  to  non-U.S.  shareholders  and provide  presumptions  under which a
non-U.S.  shareholder is subject to backup withholding and information reporting
until we receive certification from the shareholder of its non-U.S.  shareholder
status.  The new Treasury  regulations  also provide  special rules to determine
whether,  for purposes of determining  the  applicability  of a tax treaty,  our
distributions  to a non-U.S.  shareholder that is an entity should be treated as
paid to the entity or to those  owning an interest in that  entity,  and whether
the entity or its owners are entitled to benefits under the tax treaty.

         If our shares are not "United  States real property  interests"  within
the meaning of Section  897 of the Tax Code,  a non-U.S.  shareholder's  gain on
sale of our shares  generally  will not be subject to federal  income  taxation,
except that a nonresident  alien individual who was present in the United States
for 183 days or more  during  the  taxable  year will be subject to a 30% tax on
this gain. Our shares will not constitute a United States real property interest
if we are a "domestically  controlled REIT." A domestically controlled REIT is a
REIT in which at all times during the preceding  five-year  period less than 50%
in value of its shares is held  directly or indirectly  by foreign  persons.  We
believe that we are and will be a domestically  controlled  REIT and thus that a
non-U.S. shareholder's gain on sale of our shares will not be subject to federal
income taxation. However, because our shares are publicly traded, we can provide
no assurance  that we will be a  domestically  controlled  REIT. If we are not a
domestically  controlled  REIT,  a  non-U.S.  shareholder's  gain on sale of our
shares  will not be  subject to federal  income  taxation  as a sale of a United
States real  property  interest,  if (1) our shares are  "regularly  traded," as
defined by applicable Treasury regulations,  on an established securities market
such as the New York Stock Exchange, and (2) the non-U.S. shareholder has at all
times during the preceding five years owned 5% or less by value of that class of
our shares. If the gain on the sale of our shares were subject to federal income
taxation,  the  non-U.S.  shareholder  would  generally  be  subject to the same
treatment as a U.S.  shareholder  with respect to its gain, would be required to
file a United States federal  income tax return  reporting that gain, and in the
case of  corporate  non-U.S.  shareholders  might owe branch  profits  tax under
Section  884 of the Tax Code.  In any event,  a  purchaser  of our shares from a
non-U.S.  shareholder  will not be required to withhold on the purchase price if
the purchased shares are regularly traded on an established securities market or
if we are a domestically controlled REIT. Otherwise, the purchaser of our shares
may be required  to  withhold  10% of the  purchase  price paid to the  non-U.S.
shareholder and to remit the withheld amount to the IRS.



                                       15


Backup Withholding and Information Reporting Requirements

         We will  report to our U.S.  shareholders  and to the IRS the amount of
dividends paid during each calendar year and the amount of tax withheld, if any.
Under the backup withholding rules, a U.S.  shareholder may be subject to backup
withholding  at the rate of 31% with respect to  dividends  paid unless the U.S.
shareholder  (1) is a corporation  or comes within other exempt  categories  and
when required  demonstrates that fact or (2) provides a taxpayer  identification
number,  certifies as to no loss of exemption from backup  withholding rules and
otherwise complies with applicable requirements of the backup withholding rules.
A  U.S.   shareholder  who  does  not  provide  us  with  his  correct  taxpayer
identification  number  may be  subject  to  penalties  imposed  by the IRS.  In
addition, we may be required to withhold a portion of capital gain distributions
to any U.S. shareholder who fails to certify his non-foreign status to us.

           We will report to our non-U.S. shareholders and to the IRS the amount
of dividends  paid during each calendar year and the amount of tax withheld,  if
any.  These  information  reporting  requirements  apply  regardless  of whether
withholding was reduced or eliminated by an applicable tax treaty.  As discussed
above,  withholding  rates of 30% and 35% may apply to distributions to non-U.S.
shareholders,  and new  Treasury  regulations  will  when  effective  alter  the
information reporting and withholding rules applicable to non-U.S. shareholders.

         The payment of the proceeds  from the  disposition  of our shares to or
through  the  United  States  office of a broker  will  generally  be subject to
information  reporting  and backup  withholding  at a rate of 31%  unless  under
penalties  of perjury  you  certify  your  status as a non-U.S.  shareholder  or
otherwise  establish  an  exemption.  The  payment  of  the  proceeds  from  the
disposition  of our shares to or through a non-United  States office of a broker
generally will not be subject to backup withholding and information reporting.

         Any  amounts  required  to be  withheld  from  payments  to you will be
collected by us or other  applicable  withholding  agents for  remittance to the
IRS. Amounts withheld are generally not an additional tax and may be refunded or
credited  against your federal income tax  liability,  provided that you furnish
the required  information  to the IRS. In addition,  the absence or existence of
applicable  withholding does not necessarily  excuse you from filing  applicable
United States federal income tax returns.

Other Tax Considerations

         You should  recognize that our and our  shareholders'  present  federal
income tax treatment may be modified by legislative, judicial, or administrative
actions at any time,  which  actions  may be  retroactive  in effect.  The rules
dealing  with  federal  income  taxation  are  constantly  under  review  by the
Congress, the IRS and the Treasury Department,  and statutory changes as well as
promulgation of new regulations,  revisions to existing regulations, and revised
interpretations of established  concepts occur frequently.  No prediction can be
made  as to the  likelihood  of  passage  of any new tax  legislation  or  other
provisions  either  directly or  indirectly  affecting  us or our  shareholders.
Revisions  in federal  income tax laws and  interpretations  of these laws could
adversely affect the tax consequences of an investment in our shares. We and our
shareholders  may also be subject to state or local taxation in various state or
local  jurisdictions,  including those in which we or our shareholders  transact
business or reside. State and local tax treatment may not conform to the federal
income tax consequences discussed above.

         We thus urge you to consult your own tax advisor regarding the specific
federal,  state,  local,  foreign  and  other  tax  consequences  to  you of the
acquisition, ownership, and disposition of our shares.

           ERISA PLANS, KEOGH PLANS AND INDIVIDUAL RETIREMENT ACCOUNTS

General Fiduciary Obligations

         Fiduciaries of a pension, profit-sharing or other employee benefit plan
subject  to  Title I of the  Employee  Retirement  Income  Security  Act of 1974
("ERISA") must consider the following:

         -        whether  their   investment   in  our  shares   satisfies  the
                  diversification requirements of ERISA;

         -        whether  the  investment  is  prudent  in  light  of  possible
                  limitations on the marketability of our shares;

         -        whether  they have  authority  to acquire our shares under the
                  applicable governing instrument and Title I of ERISA; and

  
                                       16

         -        whether the  investment  is  otherwise  consistent  with their
                  fiduciary responsibilities.

         Trustees  and other  fiduciaries  of an ERISA  plan may incur  personal
liability  for any loss  suffered by the plan on account of a violation of their
fiduciary  responsibilities.  In addition, these fiduciaries may be subject to a
civil  penalty of up to 20% of any amount  recovered by the plan on account of a
violation.  Fiduciaries of any Individual  Retirement  Account,  "Keogh Plan" or
other qualified  retirement plan not subject to Title I of ERISA should consider
that an IRA or such a plan may only make  investments that are authorized by the
appropriate  governing instrument.  Fiduciary  shareholders should consult their
own legal  advisors  if they have any concern as to whether  the  investment  is
consistent with the foregoing criteria.

Prohibited Transactions

         Fiduciaries of ERISA plans and persons  making the investment  decision
for an IRA or other  non-ERISA plan should also consider the  application of the
prohibited  transaction  provisions  of ERISA and the  Internal  Revenue Code in
making their investment decision.  Sales and other transactions between an ERISA
plan,  an  IRA,  or  certain  types  of  non-ERISA  plans  such as  Keogh  plans
("Non-ERISA Plans") and persons related to it are prohibited  transactions.  The
particular facts concerning the sponsorship, operations and other investments of
an ERISA  plan,  IRA,  or other  Non-ERISA  Plan may cause a wide range of other
persons to be  treated as  disqualified  persons  or  parties in  interest  with
respect to it. A  prohibited  transaction,  in addition  to  imposing  potential
personal  liability  upon  fiduciaries  of ERISA  Plans,  may also result in the
imposition  of an excise tax under the Internal  Revenue Code or a penalty under
ERISA upon the disqualified person or party in interest with respect to the plan
or IRA.  If the  disqualified  person  who  engages  in the  transaction  is the
individual on behalf of whom an IRA is maintained  or his  beneficiary,  the IRA
may lose its  tax-exempt  status  and its  assets  may be  deemed  to have  been
distributed  to the  individual  in a taxable  distribution  on  account  of the
prohibited transaction but no excise tax will be imposed. Fiduciary shareholders
should  consult their own legal  advisors if they have any concern as to whether
the investment is a prohibited transaction.

Special Fiduciary and Prohibited Transactions Considerations

         The Department of Labor, which has administrative  responsibility  over
ERISA  plans as well as over  IRAs  and  other  Non-ERISA  Plans,  has  issued a
regulation  defining "plan assets." The regulation  generally provides that when
an ERISA or Non-ERISA Plan or IRA acquires a security that is an equity interest
in an entity and that  security is neither a "publicly  offered  security" nor a
security issued by an investment company registered under the Investment Company
Act of 1940,  the ERISA plan's or Non-ERISA  Plan's or IRA's assets include both
the equity interest and an undivided  interest in each of the underlying  assets
of the entity,  unless it is established  either that the entity is an operating
company or that equity  participation in the entity by benefit plan investors is
not significant.

         Each class of our  shares--that  is, our common shares and any class of
preferred  shares  that  may be  outstanding--must  be  analyzed  separately  to
ascertain  whether it is a publicly offered security.  The regulation  defines a
publicly  offered  security  as  a  security  that  is  "widely  held,"  "freely
transferable"  and either  part of a class of  securities  registered  under the
Securities  Exchange  Act of  1934,  or sold  under  an  effective  registration
statement  under  the  Securities  Act of  1933,  provided  the  securities  are
registered  under the Securities  Exchange Act of 1934 within 120 days after the
end of the fiscal year of the issuer  during which the offering  occurred.  Each
class of our shares has been  registered  under the  Securities  Exchange Act of
1934.

         The regulation  provides that a security is "widely held" only if it is
part of a class of securities that is owned by 100 or more investors independent
of the  issuer  and of one  another.  However,  a  security  will not fail to be
"widely  held"  because  the number of  independent  investors  falls  below 100
subsequent  to the  initial  public  offering  as a result of events  beyond the
issuer's  control.  Our common  shares  have been  widely held and we expect our
common  shares to continue to be widely  held.  We expect the same to be true of
any class of preferred stock that we issue, but we can give no assurance in that
regard.

         The   regulation   provides   that   whether  a  security   is  "freely
transferable"  is a  factual  question  to be  determined  on the  basis  of all
relevant facts and circumstances.  The regulation further provides that, where a
security is part of an offering  in which the minimum  investment  is $10,000 or
less,  some   restrictions  on  transfer   ordinarily  will  not,  alone  or  in
combination, affect a finding that these securities are freely transferable. The
restrictions  on transfer  enumerated in the  regulation  as not affecting  that
finding include:

         -        any  restriction  on or  prohibition  against any  transfer or
                  assignment   which   would   result   in  a   termination   or
                  reclassification  for federal or state tax purposes,  or would
                  otherwise violate any state or federal law or court order;

                                       17

         -        any   requirement   that  advance  notice  of  a  transfer  or
                  assignment be given to us and any requirement  that either the
                  transferor  or  transferee,  or  both,  execute  documentation
                  setting  forth  representations  as  to  compliance  with  any
                  restrictions  on transfer which are among those  enumerated in
                  the   regulation  as  not  affecting   free   transferability,
                  including  those  described  in the  preceding  clause of this
                  sentence;

         -        any  administrative  procedure which  establishes an effective
                  date, or an event prior to which a transfer or assignment will
                  not be effective; and

         -        any limitation or restriction on transfer or assignment  which
                  is not  imposed by the issuer or a person  acting on behalf of
                  the issuer.

         We believe that the restrictions imposed under the declaration of trust
on the  transfer  of shares do not  result in the  failure  of our  shares to be
"freely  transferable."  Furthermore,  we believe that at present there exist no
other  facts or  circumstances  limiting  the  transferability  of our common or
preferred  shares which are not included among those enumerated as not affecting
their free transferability under the regulation,  and we do not expect or intend
to impose in the future,  or to permit any person to impose on our  behalf,  any
limitations or  restrictions on transfer which would not be among the enumerated
permissible limitations or restrictions.

         Assuming  that each class of our shares will be "widely  held" and that
no other facts and  circumstances  exist which restrict  transferability  of our
shares, we have received an opinion of counsel that such shares will not fail to
be "freely  transferable" for purposes of the regulation due to the restrictions
on  transfer  of the shares  under our  declaration  of trust and that under the
regulation the shares are publicly offered securities and our assets will not be
deemed to be "plan assets" of any ERISA plan, IRA or Non-ERISA Plan that invests
in our shares.

         If our assets are deemed to be plan assets under ERISA, then

         -        the prudence standards and other provisions of Part 4 of Title
                  I of ERISA would be applicable to investments made by us;

         -        the person or persons having  investment  discretion  over the
                  assets of ERISA plans which invest in us would be liable under
                  Part 4 of Title I of ERISA for investments made by us which do
                  not  conform to the ERISA  standards,  unless  the  investment
                  decision  was made by an  advisor  that has  registered  as an
                  investment  adviser under the Investment  Advisers Act of 1940
                  and other applicable  conditions are satisfied,  in which case
                  the registered advisor would potentially have such liability;

         -        transactions  that we might enter into in the ordinary  course
                  of its business and  operation  might  constitute  "prohibited
                  transactions" under ERISA and the Internal Revenue Code.


                                       18


Item 2.  Properties

         General.  At  December  31,  1998,   approximately  29%  of  our  total
investments were in senior housing properties,  67% were in office buildings and
4% were in hotels  through our equity  investment  in HPT.  We believe  that the
physical  plant of each of the  facilities in which we have invested is suitable
and adequate for our present and any  currently  proposed  uses. At December 31,
1998,  we had real estate  investments  totaling  $3.0  billion (at cost) in 256
properties that were leased to or operated by over  approximately 700 tenants or
mortgagors,  plus an investment of approximately $110.6 million (carrying value)
in approximately  8.8% of the common shares of HPT, which has investments in 170
hotel properties.  At December 31, 1998, three properties with an aggregate cost
of $45.1 million were secured by two mortgages aggregating $24.8 million.


                                       19

The following  table  summarizes  some  information  about our  properties as of
December 31, 1998. All dollar figures are in thousands.




REAL ESTATE OWNED:
                                          Number of           Number of          Investment             Minimum
Location                                  Facilities         Beds/Units            Amount          Rent/Interest (1)
- -----------------------------------------------------------------------------------------------------------------------

                                                                                        
Senior Housing Properties:
Arizona                                       6                    801                $42,861                 $4,152
California                                    8                  1,344                 53,879                  7,575
Colorado                                      8                  1,011                 34,348                  4,747
Connecticut                                   9                  1,527                 95,566                 11,961
Florida                                       5                  1,527                131,990                 10,787
Georgia                                       4                    401                 12,308                  1,354
Illinois                                      2                    704                 98,742                  7,933
Iowa                                          7                    375                  8,207                    986
Kansas                                        1                     59                  1,320                    164
Maryland                                      1                    351                 33,080                  4,387
Massachusetts                                 5                    762                 82,059                 10,044
Missouri                                      2                    215                  3,788                    591
Nebraska                                      1                     80                  1,934                    230
New Hampshire                                 1                    108                  3,754                    437
New Jersey                                    1                    150                 13,007                  1,444
New York                                      1                    103                 10,700                  1,070
North Carolina                                3                    309                  6,389                  1,087
Ohio                                          2                    400                  9,872                  1,356
Pennsylvania                                  1                    120                 15,598                  1,951
South Dakota                                  3                    361                  7,589                    982
Texas                                         1                    145                 12,410                  1,302
Vermont                                       8                    808                 29,766                  3,316
Virginia                                      3                    848                 57,666                  6,284
Washington                                    2                    303                 19,542                  2,093
Wisconsin                                     8                  1,145                 33,021                  5,490
Wyoming                                       3                    243                  7,246                    849
                                      ------------------- ------------------ ------------------- ----------------------
         Subtotal                            96                 14,200                826,642                 92,572
                                      ------------------- ------------------ ------------------- ----------------------

Office Properties:
Alaska                                        1                     --                  1,000                    441
Arizona                                       3                     --                 21,995                  2,873
California                                   18                     --                253,771                 33,014
Colorado                                      2                     --                 21,806                  2,717
Connecticut                                   2                     --                 14,325                  2,394
Delaware                                      1                     --                 44,090                  4,160
District of Columbia                          5                     --                207,521                 28,448
Florida                                       4                     --                 11,588                  1,066
Georgia                                       1                     --                  2,978                    553
Kansas                                        1                     --                  5,949                  1,772
Maryland                                      7                     --                158,084                 21,429
Massachusetts                                29                     --                169,476                 27,765
Minnesota                                     3                     --                 40,704                  4,117
Missouri                                      1                     --                  7,776                    940
New Jersey                                    4                     --                 29,947                  3,637
New Mexico                                    2                     --                 11,021                  1,298
New York                                      5                     --                174,525                 32,994
Ohio                                          1                     --                 15,276                  2,151
Oklahoma                                      1                     --                 24,762                  3,084
Pennsylvania                                 16                     --                538,399                 80,897
Rhode Island                                  1                     --                  8,010                    836
Tennessee                                     1                     --                 22,173                  2,965
Texas                                        17                     --                254,187                 40,639
Virginia                                      4                     --                 53,874                  7,160
Washington                                    2                     --                 21,388                  2,426
West Virginia                                 1                     --                  4,898                    874
Wyoming                                       1                     --                 10,317                  1,288
                                      ------------------- ------------------ ------------------- ----------------------
         Subtotal                           134                     --              2,129,840                311,938
                                      =================== ================== =================== ======================
Total Real Estate                           230                 14,200             $2,956,482               $404,510
                                      =================== ================== =================== ======================

                                       20


MORTGAGE AND NOTE INVESTMENTS:
                                          Number of           Number of          Investment             Minimum
Location                                  Facilities         Beds/Units            Amount          Rent/Interest (1)
- -----------------------------------------------------------------------------------------------------------------------
                                                                                        
Senior Housing Properties:
California                                     4                   688                 $14,643                $1,851
Connecticut                                   --                    --                   1,000                   109
Florida                                        1                   248                   5,000                   525
Kansas                                         2                   122                   1,208                   174
Louisiana                                      1                   118                  18,992                 2,293
Michigan                                       2                   342                   9,181                 1,146
Nebraska                                       9                   610                   8,770                 1,007
North Carolina                                 2                   174                   2,803                   300
Ohio*                                          1                   100                   1,782                   223
Texas                                          4                   390                   4,844                   460
Wisconsin                                     --                    --                     883                   121
                                       ------------------- ------------------ ------------------ ----------------------
         Subtotal                             26                 2,792                  69,106                 8,209
                                       ------------------- ------------------ ------------------ ----------------------
Office Properties:
California*                                   --                    --                     122                    10
                                       ------------------- ------------------ ------------------ ----------------------
         Subtotal                             --                    --                     122                    10
                                       =================== ================== ================== ======================
Total Mortgages and Notes                     26                 2,792                 $69,228                $8,219
                                       =================== ================== ================== ======================

<FN>
*    Amounts represent or include notes receivable related to improvements to real estate owned.
(1)  Amounts  represent  obligations  due to us for  properties  owned during the 12 months ended  December 31, 1998 and  annualized
     obligations due to us for properties acquired during 1998, at December 31, 1998.
</FN>

Item 3.  Legal Proceedings

         As  previously  disclosed,  in early  1995 we  commenced  an  action in
Florida state court to collect on a secured  indemnity  agreement  from a former
tenant and mortgagor,  together with certain related parties (collectively,  the
"Former  Tenant").  In May 1995  the  Former  Tenant  filed a  counterclaim  and
third-party  complaint  against  HRP and  others  including  Messrs.  Martin and
Portnoy, HRPT Advisors,  Inc. and Sullivan & Worcester LLP, seeking, among other
things, to set aside the indemnity agreement and to recover substantial damages.
After a  Massachusetts  state court  ordered the  dispute to  arbitration  and a
Florida court stayed further proceedings pending arbitration,  the Former Tenant
brought a separate  action  against HRP in the United States  District Court for
the District of Massachusetts and realleged many of the same allegations made in
the  counterclaims  and  third-party  complaints  previously  brought by them in
response to HRP's  original  action,  and adding  allegations  of  violations of
Sections 10(b) and 20(a) of the  Securities  Exchange Act of 1934 and Rule 10b-5
promulgated  thereunder and violations of 18 U.S.C ss. 1962 (RICO). In September
1996, the United States District Court for the District of Massachusetts ordered
the case brought by the Former  Tenant  dismissed  and all disputes  between the
Former Tenant and HRP referred to arbitration.

         The  arbitration  is  proceeding,  and  although  the amount of damages
claimed  by the Former  Tenant is  material,  all  claims of the  Former  Tenant
against  HRP were  dismissed  in January of this year,  except a basic claim for
common law fraud, which is scheduled for trial before the arbitrators in October
1999. The  arbitrators'  ruling,  dismissing all but one claim against HRP, both
narrows  substantially  the scope of claims  pending  against HRP and diminishes
greatly  the risk of the  Former  Tenant  being  able to hold HRP liable for (i)
attorneys  fees and costs,  or (ii) multiple  damages,  should the Former Tenant
prevail on its sole  remaining  claim  against  HRP.  We  continue to pursue our
indemnity claims in the arbitration.

         As we have previously  disclosed,  certain related cases have also been
filed by creditors or  assignees  of the Former  Tenant.  The amounts of damages
claimed by the creditors or assignees of the Former Tenant are material. We will
defend the claims of the  creditors or  assignees of the Former  Tenant in these
related  proceedings,  currently  pending in  Massachusetts  Superior Court. The
outcome of the arbitration and the related pending claims and proceedings cannot
be predicted.

         The   Declaration   of  Trust  provides  that  our  Trustees  shall  be
indemnified in certain  circumstances  by HRP in connection with claims asserted
against them by reason of their status, subject to various limitations contained
in the Declaration of Trust.  Were Messrs.  Martin and Portnoy to be held liable
in the proceedings  described above,  they may have a claim for  indemnification
from HRP.

                                       21


Item 4.  Submission of Matters to a Vote of Security Holders

         No matters were submitted to a vote of  shareholders  during the fourth
quarter of the year covered by this Annual Report on Form 10-K.

                                     PART II

Item 5.  Market for Registrant's Common Stock and Related Stockholder Matters

         Our Shares are traded on the New York Stock Exchange (symbol: HRP). The
following  table  sets  forth for the  periods  indicated  the high and low sale
prices  for the Shares as  reported  in the New York  Stock  Exchange  Composite
Transactions reports.

                                      High                   Low
1997
        First Quarter                $20 5/8                $18
        Second Quarter                19                     17 3/4
        Third Quarter                 19 1/8                 17 5/8
        Fourth Quarter                20 5/16                18 9/16

1998
        First Quarter                 20 15/16               19 5/8
        Second Quarter                20 1/4                 17 7/8
        Third Quarter                 18 13/16               15 5/8
        Fourth Quarter                17 1/8                 14

         The closing price of the Shares on the New York Stock Exchange on March
29, 1999 was $13 3/4.

As of March 5, 1999,  there were  approximately  5,951  holders of record of the
Shares,  and we  estimate  that as of such date  there were in excess of 145,000
beneficial owners of the Shares.

         Dividends  declared with respect to each period for the two most recent
fiscal  years and the amount of such  dividends  and the  respective  annualized
rates are set forth in the following table.

                                           Dividend               Annualized
                                           Per Share             Dividend Rate
1997
     First Quarter                           $.36                  $1.44
     Second Quarter                           .36                   1.44
     Third Quarter                            .37                   1.48
     Fourth Quarter                           .37                   1.48

1998
     First Quarter                            .38                   1.52
     Second Quarter                           .38                   1.52
     Third Quarter                            .38                   1.52
     Fourth Quarter                           .38                   1.52

         All dividends declared have been paid. We intend to continue to declare
and pay future dividends on a quarterly basis.

         In order to qualify for the beneficial tax treatment  accorded to REITs
by Sections 856 through 860 of the  Internal  Revenue  Code,  we are required to
make  distributions  to shareholders  which annually will be at least 95% of our
taxable income.  All  distributions  will be made by us at the discretion of the
Trustees  and  will  depend  on  our  earnings,  our  cash  flow  available  for
distribution,  our financial  condition and other factors that the Trustees deem
relevant. We have in the past distributed, and intend to continue to distribute,
substantially  all of our "real estate  investment  trust taxable income" to our
shareholders.

         As previously reported,  in 1997 we entered into an Agreement of Merger
(the "Merger  Agreement")  with  Government  Property  Investors,  Inc.  ("GPI")
pursuant  to which we agreed to  acquire  up to 30 office  buildings  


                                       22


containing  approximately 3.4 million square feet, substantially all of which is
leased to various agencies of the United States government. The Merger Agreement
provided for us to acquire these  properties in a series of closings in exchange
for our Shares. As of May 1998, the final closing under the Merger Agreement had
occurred,  and we had  issued  4,271,428  Shares to GPI and its  successors  and
assigns;  however,  the final number of Shares  issuable in connection  with the
Merger  Agreement  had not been  determined.  In  February,  1999,  we issued an
additional  256,246  Shares to GPI pursuant to the exemption  from  registration
contained in Section 4(2) of the Securities Act of 1933, as amended.

Item 6.  Selected Financial Data

         Set forth  below is selected  financial  data for the periods and dates
indicated. This data should be read in conjunction with, and is qualified in its
entirety by reference to, the consolidated financial statements and accompanying
notes  included in Item 7 of our Current Report on Form 8-K dated March 5, 1999.
Amounts are in thousands, except per Share information.



Income Statement Data:                                              Year Ended December 31,
                                          ----------------------------------------------------------------------------
                                              1998           1997           1996            1995            1994
                                          -------------- -------------- -------------- --------------- ---------------

                                                                                                  
Total revenues                                 $356,554       $208,863       $120,183       $113,322         $86,683
Income before gain (loss) on sale of
   properties and extraordinary item            146,656        112,204         77,164         61,760          57,878
Income before extraordinary item                146,656        115,102         77,164         64,236          51,872
Net income                                      144,516        114,000         73,254         64,236          49,919
Funds from operations  - basic (1)              211,715        146,312         99,106         84,638          71,851
Funds from operations - diluted (1)             227,904        162,738        103,253         84,638          71,851
Dividends declared (2)                          190,341        144,271         94,299         83,954          76,317

Per basic common share amounts:
Income before gain (loss) on sale of
   properties and extraordinary item               1.22           1.22           1.16          1.04             1.10
Income before extraordinary item                   1.22           1.25           1.16          1.08              .98
Net income                                         1.21           1.24           1.11          1.08              .95
Funds from operations - basic (1)                  1.77           1.59           1.50          1.43             1.36
Funds from operations - diluted (1)                1.74           1.57           1.49          1.43             1.36
Dividends declared (2)                             1.52           1.46           1.42          1.38             1.33

Weighted average shares outstanding             119,867         92,168         66,255         59,227          52,738



Balance Sheet Data:                                                     At December 31,
                                          ----------------------------------------------------------------------------
                                              1998           1997           1996            1995            1994
                                          -------------- -------------- -------------- --------------- ---------------

                                                                                                 
Real estate properties, at cost              $2,956,482     $1,969,023     $1,005,739       $778,211        $673,083
Real estate mortgages and notes                  69,228        104,288        150,205        141,307         133,477
Investment in HPT                               110,554        111,134        103,062         99,959              --
Total assets                                  3,064,057      2,135,963      1,229,522        999,677         840,206
Total indebtedness                            1,132,081        787,879        492,175        269,759         216,513
Total shareholders' equity                    1,827,793      1,266,260        708,048        685,592         602,039


<FN>
(1)  Our Funds From Operations ("FFO") represents net income (computed in accordance with generally accepted  accounting  principles
     ("GAAP")),  before gain or loss on sale of properties  and  extraordinary  items,  depreciation  and other  non-cash  items and
     includes HRP's pro rata share of HPT's FFO. Management considers FFO to be a measure of the financial  performance of an equity
     REIT that provides a relevant basis for comparison among REITs. FFO does not represent cash flow from operating  activities (as
     determined  in  accordance  with GAAP) and should not be considered  as an  alternative  to net income,  as an indicator of our
     financial performance or to cash flows as a measure of liquidity.

(2)  Amounts  represent  dividends  declared  with respect to the periods  shown.  Distributions  in excess of net income  generally
     constitute a return of capital.
</FN>


                                       23


Item 7. Management's  Discussion and Analysis of Financial Condition and Results
of Operations

         The  information  required  by this  item  is  incorporated  herein  by
reference  to the section  entitled  "Management's  Discussion  and  Analysis of
Financial  Condition and Results of  Operations" in Item 5 of our Current Report
on Form 8-K dated March 5, 1999.

Item 7A.  Quantitative and Qualitative Disclosures About Market Risk

         We are exposed to risks  associated  with  interest  rate  changes.  We
manage our  exposure to this market risk  through our  monitoring  of  available
financing  alternatives.  Our strategy to manage exposure to changes in interest
rates is unchanged  from December 31, 1997.  Furthermore,  we do not foresee any
significant  changes in our exposure to fluctuations in interest rates or in how
such  exposure is managed in the near future.  At December  31, 1998,  our total
outstanding debt for fixed rate notes consisted of the following:

               Amount                       Coupon                     Maturity

Unsecured senior notes:
              $40.0 million                   7.25%                      2001
             $160.0 million                  6.875%                      2002
             $150.0 million                   6.75%                      2002
             $164.9 million                   7.50%                      2003
             $100.0 million                    6.7%                      2005
             $143.0 million                    8.5%                      2013

Secured notes:
              $13.1 million                   8.00%                      2008
              $11.7 million                   7.66%                      2009

         No principal  repayments are due under the unsecured senior notes until
maturity.  If, at maturity,  the unsecured senior notes were to be refinanced at
interest rates which are 1/2 percentage  point higher than shown above,  our per
annum interest cost would increase by  approximately  $3.8 million.  The secured
notes are secured by three of our office  properties  and require  principal and
interest payments through maturity.

         As of December 31, 1998,  we had two series of senior  unsecured  notes
that were  subject to floating  interest  rates;  a $500.0  million  bank credit
facility and another series of unsecured  senior notes totaling  $250.0 million.
Our bank credit  facility  bears interest at floating rates and matures in 2002.
At December 31, 1998, $400.0 million was available for drawing under our line of
credit and $100.0  million was  outstanding.  Our line of credit is available to
finance our  acquisition  commitments.  As of December 31, 1998, our acquisition
commitments  required  approximately $21.7 million (plus closing costs) of cash.
Assuming these commitments were all funded with borrowings under our bank credit
facility,  and assuming  interest  rates  increased 1/2  percentage  point,  our
annualized interest cost would increase by approximately $108,500. Our unsecured
senior notes totaling  $250.0 million bear interest at floating rates and mature
in 2007.  Assuming  interest rates increase 1/2 percentage point, our annualized
interest costs would increase by approximately $1.3 million.

         Each of our obligations for borrowed money has provisions that allow us
to make repayments  earlier than the stated maturity date. In some cases, we are
not allowed to make early repayment prior to a cutoff date and in other cases we
are allowed to make  prepayments  only at a premium to face value. In any event,
these  prepayment  rights may afford us the  opportunity to mitigate the risk of
refinancing at maturity at higher rates,  by refinancing at lower rates prior to
maturity.

         From time to time,  we may enter into  contracts  to hedge our interest
rate risk.  As of  December  31,  1998,  we have not  entered  into any of these
contracts.

         The market prices,  if any, of each of our fixed rate obligations as of
December 31, 1998 are  sensitive  to changes in interest  rates.  Typically,  if
market  rates of interest  increase,  the current  market  price of a fixed rate
obligation will decrease.  Conversely, if market rates of interest decrease, the
current market price of a fixed rate obligation  typically will increase.  Based
on the balances  outstanding at December 31, 1998, a hypothetical  immediate one
percentage  point  change in interest  rates would  change the fair value of our
fixed rate debt obligations by approximately  $36.5 million (based on discounted
cash flow analysis).

                                       24




Item 8. Financial Statements and Supplementary Data

         The  information  required  by this  item  is  incorporated  herein  by
reference to the  consolidated  financial  statements of HRPT  Properties  Trust
included in Item 7 of our Current Report on Form 8-K dated March 5, 1999.

Item  9.  Changes  in and  Disagreements  with  Accountants  on  Accounting  and
Financial Disclosure

         Not applicable

                                    PART III

The  information  in Part III  (Items,  10,  11, 12 and 13) is  incorporated  by
reference to our definitive Proxy Statement,  which will be filed not later than
120 days after the end of our fiscal year.

                                     PART IV

Item 14. Exhibits, Financial Statement Schedules and Reports on Form 8-K

(a)     Index to Financial Statements and Financial Statement Schedules



                              HRPT PROPERTIES TRUST

                                                                                                             Page
                                                                                                          
1)  The following consolidated financial statements of HRPT Properties Trust are
    incorporated  by reference to our Current  Report on Form 8-K dated March 5,
    1999. Page references are to such Current Report:
      Consolidated  Balance  Sheets  as  of  December  31,  1998  and  1997                                  F-3
      Consolidated  Statements  of  Income  for each of the  three  years in the
          periods ended December 31, 1998, 1997 and 1996                                                     F-4
      Consolidated  Statements  of  Shareholders'  Equity  for each of the three
          years in the periods ended December 31, 1998, 1997, and 1996                                       F-5
      Consolidated  Statements  of Cash Flows for each of the three years in the
          periods ended December 31, 1998, 1997, and 1996                                                    F-6
      Notes to Consolidated Financial Statements                                                             F-8

2) The following schedules are filed herewith:
      III - Real Estate and Accumulated  Depreciation                                                        S-1 
      IV - Mortgage Loans on Real Estate                                                                     S-9



         All other  schedules  for  which  provision  is made in the  applicable
accounting  regulations  of the  Securities  and  Exchange  Commission  are  not
required under the related instructions, or are inapplicable, and therefore have
been omitted.

(b)      Reports on Form 8-K

         During  the  fourth  quarter of 1998,  we filed the  following  Current
Reports on Form 8-K:

         (i)      Current Report on Form 8-K dated  November 12, 1998,  relating
                  to unaudited pro forma consolidated financial statements (Item
                  7).

         (ii)     Current Report on Form 8-K dated November 24, 1998,  filing as
                  exhibits: (1) Purchase Agreement dated as of November 24, 1998
                  by and among the Company and the  several  underwriters  named
                  therein  pertaining  to  $130,000,000  in aggregate  principal
                  amount of 8 1/2% Monthly  Income  Senior  Notes due 2013,  (2)
                  Form of  Supplemental  Indenture dated as of November 30, 1998
                  by and between  the  Company  and State  Street Bank and Trust
                  Company  pertaining  to  $130,000,000  in aggregate  principal
                  amount of 8 1/2% Monthly  Income  Senior  Notes due 2013,  (3)
                  Consent  of  Sullivan  &  Worcester  LLP,  and (4)  Opinion of
                  Sullivan & Worcester LLP relating to tax matters (Item 7).


                                       25


         (iii)    Current Report on Form 8-K dated  December 23, 1998,  relating
                  to a financing  plan for senior  housing and  healthcare  real
                  estate  investments  which would include a public  offering of
                  common  shares  of  a  subsidiary,   and  a  distribution   to
                  shareholders of common shares of that subsidiary (Item 5).

(c)      Exhibits

         3.1      Composite   copy  of  Third   Amendment  and   Restatement  of
                  Declaration  of Trust of the  Company  dated July 1, 1994,  as
                  amended to date.  (incorporated  by reference to the Company's
                  Current Report on Form 8-K, dated July 1, 1998)

         3.2      Articles   Supplementary  dated  November  4,  1994  to  Third
                  Amendment and  Restatement  of Declaration of Trust dated July
                  1, 1994 creating the Junior  Participating  Preferred  Shares.
                  (incorporated by reference to the Company's  Current Report on
                  Form 8-K, dated May 27, 1998)

         3.3      Articles  Supplementary  dated May 13, 1997 to Third Amendment
                  and  Restatement  of  Declaration  of Trust dated July 1, 1994
                  increasing   the  Junior   Participating   Preferred   Shares.
                  (incorporated by reference to the Company's  Current Report on
                  Form 8-K, dated May 27, 1998)

         3.4      Articles  Supplementary  dated May 22, 1998 to Third Amendment
                  and  Restatement  of  Declaration  of Trust dated July 1, 1994
                  increasing   the  Junior   Participating   Preferred   Shares.
                  (incorporated by reference to the Company's  Current Report on
                  Form 8-K dated May 27, 1998)

         3.5      By-laws of the Company,  as amended to date.  (incorporated by
                  reference to the Company's  Current  Report on Form 8-K, dated
                  May 27, 1998)

         4.1      Form of Common Share  Certificate.  (incorporated by reference
                  to the  Company's  Current  Report on Form 8-K dated March 11,
                  1999)

         4.2      Rights  Agreement  dated  October 17, 1994 between the Company
                  and State  Street  Bank and  Trust  Company,  as Rights  Agent
                  (including the form of Articles  Supplementary relating to the
                  Junior  Participating  Preferred  Shares annexed as an exhibit
                  thereto).   (incorporated   by  reference  to  the   Company's
                  Registration Statement on Form 8-A dated October 24, 1994)

         4.3      Indenture, dated as of September 20, 1996, between the Company
                  and Fleet National Bank ("Fleet"),  as trustee.  (incorporated
                  by reference to the Company's  Registration  Statement on Form
                  S-3, File No. 333- 02863)

         4.4      First  Supplemental  Indenture,  dated as of  October 7, 1996,
                  between  the Company  and Fleet,  as trustee,  relating to the
                  Company's 7.5% Convertible  Subordinated  Debentures due 2003,
                  Series A, including form thereof.  (incorporated  by reference
                  to the Company's  Current  Report on Form 8-K dated October 7,
                  1996)

         4.5      Second  Supplemental  Indenture,  dated as of October 7, 1996,
                  between  the Company  and Fleet,  as trustee,  relating to the
                  Company's 7.5% Convertible  Subordinated  Debentures due 2003,
                  Series B, including form thereof.  (incorporated  by reference
                  to the Company's  Current  Report on Form 8-K dated October 7,
                  1996)

         4.6      Third  Supplemental  Indenture,  dated as of  October 7, 1996,
                  between  the Company  and Fleet,  as trustee,  relating to the
                  Company's 7.25% Convertible  Subordinated Debentures due 2001,
                  including  form  thereof.  (incorporated  by  reference to the
                  Company's Current Report on Form 8-K dated October 7, 1996)

         4.7      Indenture,  dated  as of  July 9,  1997,  by and  between  the
                  Company and State Street Bank and Trust  Company,  as Trustee.
                  (incorporated  by reference to the Company's  Annual Report on
                  Form 10-K for the year ended December 31, 1997)

         4.8      Supplemental Indenture, dated July 9, 1997, by and between the
                  Company and State Street Bank and Trust  Company,  as Trustee,
                  relating  to the  Remarketed  Reset  Notes  due July 9,  2007.
                  (incorporated  by reference to the Company's  Annual Report on
                  Form 10-K for the year ended December 31, 1997)

                                       26


         4.9      Supplemental  Indenture  No. 2 dated as of  February  23, 1998
                  between the Company and State  Street Bank and Trust  Company,
                  relating to  $50,000,000  in  principal  amount of  Remarketed
                  Reset Notes due July 9, 2007.  (incorporated  by  reference to
                  the  Company's  Annual  Report on Form 10-K for the year ended
                  December 31, 1997)

         4.10     Form of Global Note relating to the Remarketed Reset Notes due
                  July 9, 2007.  (incorporated  by  reference  to the  Company's
                  Current Report on Form 8-K dated July 2, 1997)

         4.11     Supplemental  Indenture  No. 3 dated as of  February  23, 1998
                  between the Company and State  Street Bank and Trust  Company,
                  relating  to  the  Company's   6.7%  Senior  Notes  due  2005,
                  including  form  thereof.  (incorporated  by  reference to the
                  Company's  Annual  Report  on Form  10-K  for the  year  ended
                  December 31, 1997)

         4.12     Supplemental  Indenture  No. 4 dated as of August 26,  1998 by
                  and  between  the  Company  and  State  Street  Bank and Trust
                  Company,  relating  to  $160,000,000  in  aggregate  principal
                  amount  of 6  7/8%  Senior  Notes  due  2002,  including  form
                  thereof. (incorporated by reference to the Company's Quarterly
                  Report on Form 10-Q for the quarter ended September 30, 1998)

         4.13     Supplemental  Indenture No. 5 dated as of November 30, 1998 by
                  and  between  the  Company  and  State  Street  Bank and Trust
                  Company,  relating  to  $130,000,000  in  aggregate  principal
                  amount  of 8  1/2%  Monthly  Income  Senior  Notes  due  2013,
                  including  form  thereof.  (incorporated  by  reference to the
                  Company's Current Report on Form 8-K dated March 11, 1999)

         4.14     Supplemental Indenture No. 6 dated as of March 24, 1999 by and
                  between the Company and State  Street Bank and Trust  Company,
                  relating to  $90,000,000  in aggregate  principal  amount of 7
                  7/8%  Monthly  Income  Senior Notes due 2009,  including  form
                  thereof. (filed herewith)

         4.15     Indenture  dated as of  December  18,  1997 by and between the
                  Company and State Street Bank and Trust  Company,  as Trustee.
                  (incorporated by reference to the Company's  Current Report on
                  Form 8-K dated December 5, 1997)

         4.16     Supplemental  Indenture  dated as of December  18, 1997 by and
                  between the Company and State  Street Bank and Trust  Company,
                  as Trustee,  relating to the Company's 6 3/4% Senior Notes due
                  2002,  including form thereof.  (incorporated  by reference to
                  the  Company's  Current  Report on Form 8-K dated  December 5,
                  1997)

         4.17     Registration Rights Agreement dated as of December 18, 1997 by
                  and between the Company and Merrill Lynch & Co.  (incorporated
                  by reference to the Company's Current Report on Form 8-K dated
                  December 5, 1997)

         8.1      Opinion  of  Sullivan  &  Worcester,  LLP  as to  certain  tax
                  matters. (filed herewith)

         9.1      Amended and Restated AMS Voting Trust Agreement. (incorporated
                  by reference to the Company's  Registration  Statement on Form
                  S-11,  File  No.  33-55684,   dated  December  23,  1992,  and
                  amendments thereto)

         10.1     Advisory  Agreement  by  and  between  the  Company  and  HRPT
                  Advisors,  Inc., as amended.(+)  (incorporated by reference to
                  the Company's Registration Statement on Form S-11, File No.
                  3-16799, dated August 27, 1987, and amendments thereto)

         10.2     Second Amendment to the Advisory  Agreement by and between the
                  Company and HRPT Advisors,  Inc.(+) (incorporated by reference
                  to the Company's Annual Report on Form 10-K for the year ended
                  December 31, 1993)

         10.3     Third  Amendment  to  Advisory  Agreement  by and  between the
                  Company  and HRPT  Advisors,  Inc.,  dated  June 26,  1997.(+)
                  (incorporated by reference to the Company's  Current Report on
                  Form 8-K, dated July 2, 1997)

  
                                       27


         10.4     Advisory  Agreement by and between REIT Management & Research,
                  Inc.  and  the  Company   dated  as  of  January  1,  1998.(+)
                  (incorporated by reference to the Company's  Current Report on
                  Form 8-K, dated February 11, 1998)

         10.5     Agreement (for Property  Management and Leasing Agent) between
                  M&P Partners Limited  Partnership and various  subsidiaries of
                  the  Company,  effective  as of March 25,  1997,  relating  to
                  properties leased to Agencies of the United States Government.
                  (incorporated  by reference to the Company's  Quarterly Report
                  on Form 10-Q for the quarter ended September 30, 1997)

         10.6     Master Management  Agreement by and among M&P Partners Limited
                  Partnership and the parties named therein dated as of December
                  31, 1997.  (incorporated by reference to the Company's Current
                  Report on Form 8-K, dated February 11, 1998)

         10.7     Master  Management  Agreement  by and  between the Company and
                  REIT Management & Research, Inc., dated as of January 1, 1998.
                  (incorporated by reference to the Company's  Current Report on
                  Form 8-K, dated February 27, 1998)

         10.8     Parking  Operation  Management  Agreement  by and  between HUB
                  Properties  Trust,  a  subsidiary  of the  Company,  and  REIT
                  Management  &  Research,  Inc.,  dated as of  January 1, 1998.
                  (incorporated by reference to the Company's  Current Report on
                  Form 8-K, dated February 27, 1998)

         10.9     Incentive Share Award Plan.(+)  (incorporated  by reference to
                  the Company's  Registration  Statement on Form S-11,  File No.
                  33-55684, dated December 23, 1992, and amendments thereto)

         10.10    AMS Properties Security Agreement.  (incorporated by reference
                  to the Company's Annual Report on Form 10-K for the year ended
                  December 31, 1991)

         10.11    AMS Subordination Agreement. (incorporated by reference to the
                  Company's  Annual  Report  on Form  10-K  for the  year  ended
                  December 31, 1991)

         10.12    AMS  Guaranty.  (incorporated  by reference  to the  Company's
                  Annual  Report on Form 10-K for the year  ended  December  31,
                  1991)

         10.13    AMS  Pledge  Agreement.  (incorporated  by  reference  to  the
                  Company's  Annual  Report  on Form  10-K  for the  year  ended
                  December 31, 1991)

         10.14    AMS Holding Co. Pledge  Agreement.  (incorporated by reference
                  to the Company's Annual Report on Form 10-K for the year ended
                  December 31, 1991)

         10.15    Amended and Restated  Renovation Funding Agreement dated as of
                  January 13, 1992 between AMS Properties, Inc. and the Company.
                  (incorporated  by reference to the Company's  Annual Report on
                  Form 10-K for the year ended December 31, 1991)

         10.16    Amendment  to  AMS  Transaction  Documents.  (incorporated  by
                  reference to the Company's  Annual Report on Form 10-K for the
                  year ended December 31, 1991)

         10.17    GCI Master Lease Document.  (incorporated  by reference to the
                  Company's  Registration  Statement  on  Form  S-11,  File  No.
                  33-55684, dated December 23, 1992, and amendments thereto)

         10.18    Amended   and   Restated   HRP   Shares   Pledge    Agreement.
                  (incorporated  by  reference  to  the  Company's  Registration
                  Statement on Form S-11, File no. 33-55684,  dated December 23,
                  1992, and amendments thereto)

         10.19    Guaranty Cross-Default and Cross-Collateralization  Agreement.
                  (incorporated  by  reference  to  the  Company's  Registration
                  Statement on Form S-11, File No. 33-55684,  dated December 23,
                  1992, and amendments thereto)

         10.20    Connecticut  Subacute Corporation II Lease Document Waterbury.
                  (incorporated  by reference to the Company's  Annual Report on
                  Form 10-K for the year ended December 31, 1995)


                                       28


         10.21    Connecticut  Subacute  Corporation II Lease Document Cheshire.
                  (incorporated  by reference to the Company's  Annual Report on
                  Form 10-K for the year ended December 31, 1995)

         10.22    Connecticut  Subacute Corporation II Lease Document New Haven.
                  (incorporated  by reference to the Company's  Annual Report on
                  Form 10-K for the year ended December 31, 1995)

         10.23    Vermont  Subacute/New  Hampshire  Subacute  Corporation Master
                  Lease Agreement  (Chapple).  (incorporated by reference to the
                  Company's  Annual  Report  on Form  10-K  for the  year  ended
                  December 31, 1995)

         10.24    Amended  and  Restated  Agreement  and Plan of  Reorganization
                  (Chapple).  (incorporated by reference to the Company's Annual
                  report on Form 10-K for the year ended December 31, 1995)

         10.25    Amended and  Restated  Promissory  Note,  dated July 29, 1996,
                  from   Connecticut   Subacute   Corporation  to  the  Company.
                  (incorporated by reference to the Company's  Current Report on
                  Form 8-K dated October 1, 1996)

         10.26    Note Modification Agreement, dated as of June 30, 1998, by and
                  between  Connecticut  Subacute  Corporation  and the  Company.
                  (incorporated by reference to the Company's  Current Report on
                  Form 8-K dated March 11, 1999)

         10.27    Second  Amendment to Master Lease Agreement  General Terms and
                  Conditions and Leases Entered Into Pursuant Thereto,  dated as
                  of October 5, 1998, by and between the Company and Connecticut
                  Subacute  Corporation.   (incorporated  by  reference  to  the
                  Company's Current Report on Form 8-K dated March 11, 1999)

         10.28    Merger  Agreement  dated February 17, 1997 between the Company
                  and Government  Property  Investors,  Inc. (including forms of
                  Escrow   Agreement,   Investment   and   Registration   Rights
                  Agreement,  Voting  Agreement,  Information  Access Agreement,
                  Indemnification Agreement, Service Contract,  Non-Solicitation
                  Agreement and Second Closing Escrow Agreement).  (incorporated
                  by  reference  to the  Company's  Current  Report on Form 8-K,
                  dated February 17, 1997)

         10.29    Amendment  No. 1 to  Agreement  of Merger dated March 25, 1997
                  between the Company and Government  Property  Investors,  Inc.
                  (incorporated  by  reference  to  the  Company's  Registration
                  Statement  on Form S-3 (File  No.  333-29675)  filed  with the
                  Commission on June 20, 1997)

         10.30    Remarketing   Agreement   (including   form   of   Remarketing
                  Underwriting Agreement) relating to the Remarketed Reset Notes
                  due July 9, 2007 by and between the Company and Merrill  Lynch
                  & Co., dated as of July 2, 1997. (incorporated by reference to
                  the Company's Current Report on Form 8-K, dated July 2, 1997)

         10.31    Fourth Amended and Restated Revolving Credit Agreement,  dated
                  as of April 2,  1998,  among the  Company,  as  borrower,  the
                  lenders named therein, Dresdner Kleinwort Benson North America
                  LLC, as agent,  and Fleet  National  Bank,  as  administrative
                  agent.  (incorporated  by reference to the  Company's  Current
                  Report on Form 8-K, dated April 14, 1998)

         12.1     Statement  regarding  computation of ratio of earning to fixed
                  charges. (filed herewith)

         21.1     Subsidiaries of the Registrant.  (filed herewith)

         23.1     Consent of Ernst & Young LLP.  (filed herewith)

         23.2     Consent of Arthur Andersen LLP.  (filed herewith)

         23.3     Consent  of  Sullivan &  Worcester  LLP  (included  as part of
                  Exhibit 8.1 hereto)

         99.1     Current  Report  on  Form  8-K  dated  March  5,  1999  (filed
                  herewith)

         (+)  Management contract or compensatory plan or arrangement.


                                       29




                                                        HRPT PROPERTIES TRUST
                                                            SCHEDULE III
                                              REAL ESTATE AND ACCUMULATED DEPRECIATION
                                                          December 31, 1998
                                                       (Dollars in thousands)

                                                                      Gross Amount Carried at Close
                              Initial Cost to Company                      of Period 12/31/98            
                              -----------------------                --------------------------------
                                                          Costs                                                             Original
                                                       Capitalized                                   Accumulated             Constr-
                                        Buildings and  Subsequent           Buildings and            Depreciation   Date      uction
   Location           State    Land       Equipment  to Acquisition  Land     Equipment     Total (1)     (2)      Aquired      Date
- ------------------------------------------------------------------------------------------------------------------------------------
Senior Housing Propertiess:
                                                                                                   
La Mesa               AZ       $1,480      $13,320           $--     $1,480     $13,320      $14,800      $680    12/27/96      1985
Phoenix               AZ          655        2,525            5         655       2,530        3,185       471     6/30/92      1963
Scottsdale            AZ          979        8,807          140         990       8,936        9,926     1,033     5/16/94      1990
Sun City              AZ        1,174       10,569          173       1,189      10,727       11,916     1,218     6/17/94      1990
Yuma                  AZ          103          604            1         103         605          708       112     6/30/92      1984
Yuma                  AZ          223        2,100            3         223       2,103        2,326       386     6/30/92      1984
Fresno                CA          738        2,577          188         738       2,765        3,503       646    12/28/90      1963
Laguna Hills          CA        3,132       28,184          475       3,172      28,619       31,791     3,072      9/9/94      1975
Lancaster             CA          601        1,859        1,028         601       2,887        3,488       610    12/28/90      1969
Newport Beach         CA        1,176        1,729        1,223       1,176       2,952        4,128       592    12/28/90      1962
Stockton              CA          382        2,750            4         382       2,754        3,136       507     6/30/92      1968
Tarzana               CA        1,277          977          806       1,278       1,782        3,060       403    12/28/90      1969
Thousand Oaks         CA          622        2,522          310         622       2,832        3,454       639    12/28/90      1965
Van Nuys              CA          716          378          225         718         601        1,319       154    12/28/90      1969
Canon City            CO          292        6,228           --         292       6,228        6,520       201     9/26/97      1970
Colorado Springs      CO          245        5,236           --         245       5,236        5,481       169     9/26/97      1972
Delta                 CO          167        3,570           --         167       3,570        3,737       115     9/26/97      1963
Grand Junction        CO          204        3,875          329         204       4,204        4,408       650    12/30/93      1968
Grand Junction        CO            6        2,583        1,316         136       3,769        3,905       513    12/30/93      1978
Lakewood              CO          232        3,766          723         232       4,489        4,721       970    12/28/90      1972
Littleton             CO          185        5,043          348         185       5,391        5,576     1,224    12/28/90      1965
Cheshire              CT          520        7,380        1,559         520       8,939        9,459     2,626     11/1/87      1963
Forestville           CT          465        9,235        3,477         478      12,699       13,177     3,782    12/23/86      1972
Killingly             CT          240        5,360          460         240       5,820        6,060     1,970     5/15/87      1972
New Haven             CT        1,681       14,953        1,236       1,681      16,189       17,870     3,423     5/11/92      1971
Wallingford           CT          557       11,043        2,925         557      13,968       14,525     4,338    12/23/86      1974
Waterbury             CT        1,003        9,023          915       1,003       9,938       10,941     2,097     5/11/92      1974
Waterbury             CT          514       10,186        3,402         630      13,472       14,102     3,980    12/23/86      1971
Waterford             CT           86        4,714          453          86       5,167        5,253     1,814     5/15/87      1965
Willimantic           CT          134        3,566          479         166       4,013        4,179     1,307     5/15/87      1965
Boca Raton            FL        4,404       39,633          799       4,474      40,362       44,836     4,664     5/20/94      1994
Deerfield Beach       FL        1,664       14,972          299       1,690      15,245       16,935     1,762     5/16/94      1986
Fort Myers            FL        2,349       21,137          419       2,385      21,520       23,905     2,354     8/16/94      1984
Palm Harbor           FL        3,327       29,945          591       3,379      30,484       33,863     3,523     5/16/94      1992
Port St. Lucie        FL        1,223       11,009          219       1,242      11,209       12,451     1,295     5/20/94      1993
College Park          GA          300        2,702           23         300       2,725        3,025       220     5/15/96      1985


                                                                 S-1



                                                        HRPT PROPERTIES TRUST
                                                            SCHEDULE III
                                              REAL ESTATE AND ACCUMULATED DEPRECIATION
                                                          December 31, 1998
                                                       (Dollars in thousands)

                                                                      Gross Amount Carried at Close
                              Initial Cost to Company                      of Period 12/31/98            
                              -----------------------                --------------------------------
                                                          Costs                                                             Original
                                                       Capitalized                                   Accumulated             Constr-
                                        Buildings and  Subsequent           Buildings and            Depreciation   Date      uction
   Location           State    Land       Equipment  to Acquisition  Land     Equipment     Total (1)     (2)      Aquired      Date
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                   
Dublin                GA          442        3,982           80         442       4,062        4,504       312     5/15/96      1968
Glenwood              GA          174        1,564            4         174       1,568        1,742       116     5/15/96      1972
Marietta              GA          300        2,702           35         300       2,737        3,037       211     5/15/96      1967
Clarinda              IA           77        1,453          293          77       1,746        1,823       254    12/30/93      1968
Council Bluffs        IA          225          893           99         225         992        1,217       164      4/1/95      1963
Mediapolis            IA           94        1,776          251          94       2,027        2,121       303    12/30/93      1973
Pacific Junction      IA           32          306            5          32         311          343        32      4/1/95      1978
Winterset             IA          111        2,099          493         111       2,592        2,703       375    12/30/93      1973
Arlington Heights     IL        3,621       32,587          534       3,665      33,077       36,742     3,550      9/9/94      1986
Chicago               IL        6,200       55,800           --       6,200      55,800       62,000     2,848    12/27/96      1990
Ellinwood             KS          130        1,137           53         130       1,190        1,320       126      4/1/95      1972
Boston                MA        2,164       20,836        1,978       2,164      22,814       24,978     6,788      5/1/89      1968
Hyannis               MA          829        7,463           --         829       7,463        8,292     1,677     5/11/92      1972
Middleboro            MA        1,771       15,752           --       1,771      15,752       17,523     3,501      5/1/88      1970
North Andover         MA        1,448       11,049           --       1,448      11,049       12,497     2,483     5/11/92      1985
Worcester             MA        1,829       15,071        1,869       1,829      16,940       18,769     5,522      5/1/88      1970
Silver Spring         MD        3,229       29,065          786       3,301      29,779       33,080     3,319     7/25/94      1992
St. Joseph            MO          111        1,027          195         111       1,222        1,333       154      6/4/93      1976
Tarkio                MO          102        1,938          415         102       2,353        2,455       336    12/30/93      1970
Concord               NC           90        2,126           --          90       2,126        2,216       483     9/10/98      1990
Wilson                NC           27        2,375           --          27       2,375        2,402       538     9/10/98      1990
Winston-Salem         NC           75        1,696           --          75       1,696        1,771       381     9/10/98      1990
Grand Island          NE          119        1,446          369         119       1,815        1,934       150      4/1/95      1963
Rochester             NH          466        3,219           69         466       3,288        3,754       320     1/30/95      1972
Burlington            NJ        1,300       11,700            7       1,300      11,707       13,007       952     9/29/95      1994
Rochester             NY        1,070        9,630           --       1,070       9,630       10,700       492    12/27/96      1988
Akron                 OH          330        5,370          727         330       6,097        6,427     2,200     5/15/87      1971
Grove City            OH          332        3,081           32         332       3,113        3,445       430      6/4/93      1965
Canonsburg            PA        1,499       13,493          606       1,518      14,080       15,598     3,622      3/1/91      1985
Huron                 SD           45          968            1          45         969        1,014       177     6/30/92      1968
Huron                 SD          144        3,108            4         144       3,112        3,256       567     6/30/92      1968
Sioux Falls           SD          253        3,062            4         253       3,066        3,319       561     6/30/92      1960
Bellaire              TX        1,223       11,010          177       1,238      11,172       12,410     1,291     5/16/94      1991
Arlington             VA        1,859       16,734          296       1,885      17,004       18,889     1,895     7/25/94      1992
Charlottesville       VA        2,936       26,422          471       2,976      26,853       29,829     3,048     6/17/94      1991
Virginia Beach        VA          881        7,926          141         893       8,055        8,948       931     5/16/94      1990


                                                                 S-2



                                                        HRPT PROPERTIES TRUST
                                                            SCHEDULE III
                                              REAL ESTATE AND ACCUMULATED DEPRECIATION
                                                          December 31, 1998
                                                       (Dollars in thousands)

                                                                      Gross Amount Carried at Close
                              Initial Cost to Company                      of Period 12/31/98            
                              -----------------------                --------------------------------
                                                          Costs                                                             Original
                                                       Capitalized                                   Accumulated             Constr-
                                        Buildings and  Subsequent           Buildings and            Depreciation   Date      uction
   Location           State    Land       Equipment  to Acquisition  Land     Equipment     Total (1)     (2)      Aquired      Date
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                   
Barre                 VT          129        3,825            4         129       3,829        3,958       379     1/30/95      1972
Barre                 VT          261        4,530          133         389       4,535        4,924       449     1/30/95      1979
Bennington            VT          160        4,385            5         160       4,390        4,550       434     1/30/95      1971
Burlington            VT          791        5,985          410         872       6,314        7,186       621     1/30/95      1968
Springfield           VT           50          747            1          50         748          798        74     1/30/95      1976
Springfield           VT           89        3,724          157         242       3,728        3,970       369     1/30/95      1971
St. Johnsbury         VT           95        3,416            4          95       3,420        3,515       338     1/30/95      1978
St. Albans            VT          154          710            1         154         711          865        70     1/30/95      1900
Seattle               WA          256        4,869           67         256       4,936        5,192       785     11/1/93      1964
Spokane               WA        1,035       13,315           --       1,035      13,315       14,350       581      5/7/97      1993
Brookfield            WI          834        3,849        8,014         834      11,863       12,697     1,928    12/28/90      1964
Clintonville          WI           14        1,695           38          14       1,733        1,747       389    12/28/90      1960
Clintonville          WI           49        1,625           87          30       1,731        1,761       387    12/28/90      1965
Madison               WI          144        1,633          110         144       1,743        1,887       390    12/28/90      1920
Milwaukee             WI          232        1,368            1         232       1,369        1,601       281     9/10/98      1970
Milwaukee             WI          277        3,883           --         277       3,883        4,160       769     3/27/92      1969
Pewaukee              WI          984        2,432           --         984       2,432        3,416       518     9/10/98      1963
Waukesha              WI           68        3,452        2,232          68       5,684        5,752     1,036    12/28/90      1958
Laramie               WY          191        3,632          199         191       3,831        4,022       595    12/30/93      1964
Worland               WY          132        2,503          589         132       3,092        3,224       432    12/30/93      1970
                              --------------------------------------------------------------------------------
         Subtotal              74,539      705,504       46,599      75,673     750,969     826,642    114,454
                              --------------------------------------------------------------------------------
Office Buildings:
Petersburg            AK          189          811           --         189         811        1,000        36     3/31/97      1983
Phoenix               AZ        2,687       11,532          231       2,729      11,721       14,450       472     5/15/97      1997
Safford               AZ          635        2,729           61         647       2,778        3,425       123     3/31/97      1992
Tuscon                AZ          765        3,280           75         779       3,341        4,120       148     3/31/97      1993
Anaheim               CA          691        6,223           --         691       6,223        6,914       234     12/5/97      1992
Anaheim               CA           82          735           --          82         735          817        28     12/5/97      1970
Anaheim               CA          133        1,201           --         133       1,201        1,334        45     12/5/97      1970
Kearney Mesa          CA        2,916       12,456          337       2,969      12,740       15,709       565     3/31/97      1994
Los Angeles           CA        5,076       49,884          768       5,076      50,652       55,728     2,090     5/15/97      1979
Los Angeles           CA        5,055       49,685          765       5,055      50,450       55,505     2,081     5/15/97      1979
Los Angeles           CA        1,921        8,242          190       1,955       8,398       10,353       304     7/11/97      1996
Newport Beach         CA        1,220        3,307           --       1,220       3,307        4,527        52     5/26/98      1984
Sacramento            CA          644        3,206           77         644       3,283        3,927       359     8/30/94      1984
San Diego             CA          294        2,650          201         294       2,851        3,145       161    12/31/96      1984


                                                                 S-3



                                                        HRPT PROPERTIES TRUST
                                                            SCHEDULE III
                                              REAL ESTATE AND ACCUMULATED DEPRECIATION
                                                          December 31, 1998
                                                       (Dollars in thousands)

                                                                      Gross Amount Carried at Close
                              Initial Cost to Company                      of Period 12/31/98            
                              -----------------------                --------------------------------
                                                          Costs                                                             Original
                                                       Capitalized                                   Accumulated             Constr-
                                        Buildings and  Subsequent           Buildings and            Depreciation   Date      uction
   Location           State    Land       Equipment  to Acquisition  Land     Equipment     Total (1)     (2)      Aquired      Date
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                   
San Diego             CA        2,984       12,859        2,197       3,038      15,002       18,040       616     3/31/97      1996
San Diego             CA          502        4,526          342         502       4,868        5,370       276    12/31/96      1984
San Diego             CA        4,269       18,316          413       4,347      18,651       22,998       827     3/31/97      1996
San Diego             CA          316        2,846          215         316       3,061        3,377       173    12/31/96      1984
San Diego             CA        1,228       11,199           41       1,228      11,240       12,468       574     12/5/96      1985
San Diego             CA          992        9,040           33         992       9,073       10,065       463     12/5/96      1985
San Diego             CA        1,985       18,096           67       1,985      18,163       20,148       927     12/5/96      1985
San Diego             CA          313        2,820          213         313       3,033        3,346       172    12/31/96      1984
Aurora                CO        1,152       13,272           --       1,152      13,272       14,424       494    11/14/97      1993
Golden                CO          494          152        6,736         495       6,887        7,382       122     3/31/97      1997
Wallingford           CT          367        3,301           --         367       3,301        3,668         3    12/22/98      1988
Wallingford           CT          640       10,017           --         640      10,017       10,657       136      6/1/98      1986
Washington            DC        5,975       53,778          223       5,975      54,001       59,976       733     6/23/98      1991
Washington            DC        1,851       16,511          197       1,851      16,708       18,559       636    12/19/97      1966
Washington            DC        6,979       29,949          871       7,107      30,692       37,799     1,373     3/31/97      1989
Washington            DC       12,008       51,528        1,282      12,227      52,591       64,818     2,330     3/31/97      1996
Washington            DC        2,485       22,696        1,188       2,485      23,884       26,369     1,405     9/13/96      1976
Wilmington            DE        4,409       39,681           --       4,409      39,681       44,090       455     7/23/98      1986
Miami                 FL          144        1,297           --         144       1,297        1,441        27     3/19/98      1987
Orlando               FL          256        2,308           --         256       2,308        2,564        52     2/19/98      1997
Orlando               FL          722        6,499           --         722       6,499        7,221       142     2/19/98      1997
Orlando               FL           --          362           --          --         362          362        --     2/19/98      1997
Savannah              GA          544        2,330          104         553       2,425        2,978       105     3/31/97      1990
Kansas City           KS        1,042        4,469          438       1,061       4,888        5,949       239     3/31/97      1990
Boston                MA        1,500       13,500          262       1,500      13,762       15,262     1,061    12/18/95      1988
Boston                MA        1,447       13,028           45       1,448      13,072       14,520     1,075     9/28/95      1993
Boston                MA        3,378       30,397        1,694       3,378      32,091       35,469     2,851     9/28/95      1988
Charlton              MA          141        1,269            8         141       1,277        1,418        52     5/15/97      1988
Fitchburg             MA          223        2,004           10         223       2,014        2,237        82     5/15/97      1994
Grafton               MA           37          336            4          37         340          377        14     5/15/97      1930
Lexington             MA        1,054        9,487           --       1,054       9,487       10,541       228     1/30/98      1994
Milford               MA          144        1,297            9         144       1,306        1,450        53     5/15/97      1989
Millbury              MA           34          309            4          34         313          347        13     5/15/97      1950
Northbridge           MA           32          290            5          32         295          327        12     5/15/97      1962
Paxton                MA           24          212            4          24         216          240         9     5/15/97      1984
Quincy                MA        2,487       16,645           19       2,487      16,664       19,151       296      4/3/98      1988


                                                                 S-4



                                                        HRPT PROPERTIES TRUST
                                                            SCHEDULE III
                                              REAL ESTATE AND ACCUMULATED DEPRECIATION
                                                          December 31, 1998
                                                       (Dollars in thousands)

                                                                      Gross Amount Carried at Close
                              Initial Cost to Company                      of Period 12/31/98            
                              -----------------------                --------------------------------
                                                          Costs                                                             Original
                                                       Capitalized                                   Accumulated             Constr-
                                        Buildings and  Subsequent           Buildings and            Depreciation   Date      uction
   Location           State    Land       Equipment  to Acquisition  Land     Equipment     Total (1)     (2)      Aquired      Date
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                   
Quincy                MA        1,658       11,097           13       1,658      11,110       12,768       198      4/3/98      1988
Spencer               MA          211        1,902           11         211       1,913        2,124        78     5/15/97      1992
Sturbridge            MA           83          751            6          83         757          840        31     5/15/97      1986
Webster               MA          315        2,834           14         315       2,848        3,163       116     5/15/97      1995
Westborough           MA           42          381            5          42         386          428        16     5/15/97      1900
Westborough           MA           24          216            4          24         220          244         9     5/15/97      1953
Westborough           MA          166        1,498            8         166       1,506        1,672        61     5/15/97      1977
Westborough           MA          396        3,562           15         396       3,577        3,973       145     5/15/97      1986
Westwood              MA          537        4,960            1         538       4,960        5,498       244      1/8/97      1977
Westwood              MA          500        4,562            1         500       4,563        5,063        61      6/8/98      1990
Westwood              MA          303        2,740           59         304       2,798        3,102       148    11/26/96      1980
Worcester             MA          354        3,189           14         354       3,203        3,557       130     5/15/97      1985
Worcester             MA          111        1,000            6         111       1,006        1,117        41     5/15/97      1986
Worcester             MA          265        2,385           12         265       2,397        2,662        97     5/15/97      1972
Worcester             MA        1,132       10,186           38       1,132      10,224       11,356       415     5/15/97      1989
Worcester             MA          158        1,417            7         157       1,425        1,582        58     5/15/97      1992
Worcester             MA          895        8,052           41         895       8,093        8,988       328     5/15/97      1990
Baltimore             MD          900        8,097           --         900       8,097        8,997        42    10/15/98      1989
Baltimore             MD           --       12,430           73          --      12,503       12,503       520    11/18/97      1988
College Park          MD        9,423       40,433          934       9,595      41,195       50,790     1,830     3/31/97      1994
Gaithersburg          MD        4,381       18,798          464       4,461      19,182       23,643       858     3/31/97      1995
Germantown            MD        2,305        9,890          263       2,347      10,111       12,458       452     3/31/97      1995
Oxon Hill             MD        3,181       13,653          323       3,240      13,917       17,157       619     3/31/97      1992
Rockville             MD        3,251       29,258           27       3,251      29,285       32,536       640      2/2/98      1986
Bloomington           MN        1,898       17,081        2,150       1,898      19,231       21,129       338     3/19/98      1995
Eagan                 MN        1,424       12,822            1       1,425      12,822       14,247       254     3/19/98      1986
Mendota Heights       MN          533        4,795           --         533       4,795        5,328        95     3/19/98      1995
Kansas City           MO        1,443        6,193          140       1,470       6,306        7,776       280     3/31/97      1995
Florham Park          NJ        1,412       12,709           --       1,412      12,709       14,121       145     7/31/98      1979
Vorhees               NJ        1,053        6,625           --       1,053       6,625        7,678       104     5/26/98      1990
Vorhees               NJ          445        2,798           --         445       2,798        3,243        44     5/26/98      1990
Vorhees               NJ          673        4,232           --         673       4,232        4,905        66     5/26/98      1990
Albequerque           NM          493        2,119           58         503       2,167        2,670        96     3/31/97      1984
Sante Fe              NM        1,551        6,650          150       1,578       6,773        8,351       300     3/31/97      1987
Brooklyn              NY          775        7,054            2         775       7,056        7,831       448      6/6/96      1971
Buffalo               NY        4,405       18,899          426       4,485      19,245       23,730       853     3/31/97      1994


                                                                 S-5



                                                        HRPT PROPERTIES TRUST
                                                            SCHEDULE III
                                              REAL ESTATE AND ACCUMULATED DEPRECIATION
                                                          December 31, 1998
                                                       (Dollars in thousands)

                                                                      Gross Amount Carried at Close
                              Initial Cost to Company                      of Period 12/31/98            
                              -----------------------                --------------------------------
                                                          Costs                                                             Original
                                                       Capitalized                                   Accumulated             Constr-
                                        Buildings and  Subsequent           Buildings and            Depreciation   Date      uction
   Location           State    Land       Equipment  to Acquisition  Land     Equipment     Total (1)     (2)      Aquired      Date
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                   
Irondoquoit           NY        1,910       17,189           21       1,910      17,210       19,120       234     6/30/98      1986
New York              NY       44,000       66,976           --      44,000      66,976      110,976     2,080     10/1/97      1989
White Plains          NY        1,200       10,870          798       1,200      11,668       12,868       790      2/6/96      1952
Mason                 OH        1,528       13,748           --       1,528      13,748       15,276       186     6/10/98      1994
Oklahoma City         OK        4,596       19,721          445       4,680      20,082       24,762       890     3/31/97      1992
Fort Washington       PA        1,154        7,722           --       1,154       7,722        8,876       169     1/15/98      1996
FT. Washington        PA        1,184        5,559           --       1,184       5,559        6,743       180     9/22/97      1967
FT. Washington        PA          683        3,198           --         683       3,198        3,881       104     9/22/97      1970
FT. Washington        PA        1,872        8,816           --       1,872       8,816       10,688       286     9/22/97      1960
Greensburg            PA          780        7,026           --         780       7,026        7,806        95      6/3/98      1997
Horsham               PA          741        3,611            7         741       3,618        4,359       117     9/22/97      1983
King of Prussia       PA          634        3,251           --         634       3,251        3,885       108     9/22/97      1964
King of Prussia       PA          552        2,893           --         552       2,893        3,445        64      2/2/98      1996
King of Prussia       PA          354        3,183           --         354       3,183        3,537        70      2/2/98      1997
Philadelphia          PA       24,753      222,775          103      14,364     233,267      247,631     3,028     6/30/98      1990
Philadelphia          PA        7,884       71,002          101       7,884      71,103       78,987     2,675    11/13/97      1987
Philadelphia          PA       13,849      101,559          152      13,849     101,711      115,560     2,010     3/30/98      1983
Pittsburg             PA        1,663       14,966            8       1,663      14,974       16,637       109     9/14/98      1994
Pittsburg             PA          720        9,589           --         720       9,589       10,309       211     2/27/98      1991
Plymouth              PA        1,412        7,415          899       1,412       8,314        9,726       181     1/15/98      1996
Washington            PA          631        5,698           --         631       5,698        6,329         6     12/1/98      1998
Lincoln               RI          320        7,690           --         320       7,690        8,010       287    11/13/97      1997
Memphis               TN        2,206       19,856          111       2,206      19,967       22,173       188     8/31/98      1989
Austin                TX        2,317       21,037           --       2,317      21,037       23,354       787     12/5/97      1996
Austin                TX        1,529       13,760           --       1,529      13,760       15,289       157     7/16/98      1993
Austin                TX        2,072       18,650            5       2,072      18,655       20,727        97    10/20/98      1997
Austin                TX          562        5,054           --         562       5,054        5,616        26    10/20/98      1997
Austin                TX       18,440           --           21      18,440          21       18,461         0     10/7/98      1968
Austin                TX        1,476       13,286           --       1,476      13,286       14,762        69    10/20/98      1997
Austin                TX        1,436       12,927           --       1,436      12,927       14,363        67     10/7/98      1998
Austin                TX        4,878       43,903           34       4,878      43,937       48,815       229     10/7/98      1968
Austin                TX        1,226       11,126           --       1,226      11,126       12,352       416     12/5/97      1997
Austin                TX        1,402       12,729            2       1,402      12,731       14,133       476     12/5/97      1997
Austin                TX        1,621       14,594          653       1,621      15,247       16,868       609     12/5/97      1997
Austin                TX        1,218       11,040          103       1,218      11,143       12,361       420     12/5/97      1986
Austin                TX        1,439        6,137           30       1,439       6,167        7,606       121     3/24/98      1975


                                                                 S-6



                                                        HRPT PROPERTIES TRUST
                                                            SCHEDULE III
                                              REAL ESTATE AND ACCUMULATED DEPRECIATION
                                                          December 31, 1998
                                                       (Dollars in thousands)

                                                                      Gross Amount Carried at Close
                              Initial Cost to Company                      of Period 12/31/98            
                              -----------------------                --------------------------------
                                                          Costs                                                             Original
                                                       Capitalized                                   Accumulated             Constr-
                                        Buildings and  Subsequent           Buildings and            Depreciation   Date      uction
   Location           State    Land       Equipment  to Acquisition  Land     Equipment     Total (1)     (2)      Aquired      Date
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                   
Austin                TX          466        4,191           42         466       4,233        4,699       101     1/27/98      1980
Irving                TX          542        4,879           --         542       4,879        5,421        97     3/19/98      1995
Irving                TX          846        7,616           --         846       7,616        8,462       151     3/19/98      1995
Waco                  TX        2,030        8,708          160       2,060       8,838       10,898       229    12/23/97      1997
Alexandria            VA        2,109       18,982           --       2,109      18,982       21,091        20    12/30/98      1987
Arlington             VA          810        7,289           --         810       7,289        8,099        68     8/26/98      1987
Fairfax               VA          569        5,122           84         569       5,206        5,775       275     12/4/96      1990
Falls Church          VA        3,456       14,828          625       3,519      15,390       18,909       674     3/31/97      1993
Richland              WA        3,970       17,035          383       4,042      17,346       21,388       769     3/31/97      1995
Falling Waters        WV          906        3,886          106         922       3,976        4,898       176     3/31/97      1993
Cheyenne              WY        1,915        8,217          185       1,950       8,367       10,317       371     3/31/97      1995
                            ----------------------------------------------------------------------------------
         Subtotal             303,023    1,797,144       29,673     294,097   1,835,743   2,129,840     55,357
                            ----------------------------------------------------------------------------------
  Grand Total                $377,562   $2,502,648      $76,272    $369,770  $2,586,712  $2,956,482   $169,811
                            ==================================================================================

<FN>
(1)  Aggregate cost for federal income tax purposes is approximately $2,882,104.
(2)  Depreciation is provided for on buildings and improvements for periods ranging up to 40 years and on equipment up to 12 years.
</FN>



                                                                 S-7




                              HRPT PROPERTIES TRUST
                                  Schedule III
                    REAL ESTATE AND ACCUMULATED DEPRECIATION
                                December 31, 1998
                             (Dollars in thousands)
                                                                 


Reconciliation  of  the  carrying  amount  of  real  estate  and  equipment  and
accumulated depreciation at the beginning of the period:

                                         Real Estate and        Accumulated
                                            Equipment          Depreciation
                                       --------------------   ----------------
Balance at January 1, 1996                    $778,211              $55,855
   Additions                                   227,528               21,066
                                       --------------------   ----------------
Balance at December 31, 1996                 1,005,739               76,921
   Additions                                   998,579               37,619
   Disposals                                   (35,295)              (2,871)
                                       --------------------   ----------------
Balance at December 31, 1997                 1,969,023              111,669
   Additions                                 1,004,523               58,837
   Disposals                                   (17,064)                (695)
                                       --------------------   ----------------
Balance at December 31, 1998                $2,956,482             $169,811
                                       ====================   ================


                                      S-8









                                                        HRPT PROPERTIES TRUST
                                                             SCHEDULE IV
                                                    MORTGAGE LOANS ON REAL ESTATE
                                                          December 31, 1998
                                                       (Dollars in thousands)
                                                                                                        (1)      Principal Amount of
                             Final                                                        Face        Carrying    Loans Subject to
                  Interest  Maturity                                                     Value of     Value of  Delinquent Principal
Location           Rate      Date       Periodic Payment Terms                           Mortgage     Mortgage      or Interest
- ----------------- --------- ----------- --------------------------------------------- --------------- --------- --------------------

                                                                                                     
Farmington, MI     11.50%    1/1/06     Principal and interest, payable monthly in        $4,200         $4,200        $--
                                        arrears.  $3.8 million due at maturity.

Jacksonville, FL   10.50%    3/31/06    Interest only, payable monthly in arrears.         5,000          5,000         --
                                        $5.0 million due at maturity.

Howell, MI         11.50%    1/1/06     Principal and interest, payable monthly in         4,981          4,981         --
                                        arrears.  $4.5 million due at maturity.

Ainsworth, NE      10.64%   12/31/16    Principal and interest, payable monthly in         5,154          5,154         --
Ashland, NE                             arrears.  $2.8 million due at maturity.
Blue Hill, NE
Gretna, NE
Sutherland, NE
Waverly, NE

Ainsworth, NE      11.00%   12/31/16    Principal and interest, payable monthly in         2,052          2,052         --
Ashland, NE                             arrears.  $1.1 million due at maturity.
Blue Hill, NE
Edgar, NE
Gretna, NE
Sutherland, NE
Waverly, NE
Lyons, NE
Milford, NE

Torrance, CA       12.50%   12/31/02    Principal and interest, payable monthly in        12,233         12,233        232
Torrance, CA                            arrears.  $11.8 million due at maturity.
Anaheim, CA

Arleta, CA          9.96%    9/30/01    Interest only, payable monthly in arrears.         2,410          2,410         79
                                        $2.4 million due at maturity.


                                                                 S-9






                                                        HRPT PROPERTIES TRUST
                                                       SCHEDULE IV- continued
                                                    MORTGAGE LOANS ON REAL ESTATE
                                                          December 31, 1998
                                                       (Dollars in thousands)
                                                                                                        (1)      Principal Amount of
                             Final                                                        Face        Carrying    Loans Subject to
                  Interest  Maturity                                                     Value of     Value of  Delinquent Principal
Location           Rate      Date       Periodic Payment Terms                           Mortgage     Mortgage      or Interest
- ----------------- --------- ----------- --------------------------------------------- --------------- --------- --------------------

                                                                                                
Spencer, NC        8.125%    2/1/99     Principal and interest, payable monthly in         2,973          2,803         --
                                        arrears.  $3.0 million due at maturity.

Slidell, LA        11.00%    12/31/10   Principal and interest, payable monthly in        18,992         18,992         --
                                        arrears.  $13.9 million due at maturity.

8 Mortgages        7.87% -   8/99-12/16 Interest only or principal and interest,          11,109         10,269         --
                   13.75%               payable monthly in arrears.

- ----------------- --------- ----------- --------------------------------------------- --------------- --------- --------------------
                                                                                         $69,104        $68,094       $311
                                                                                      =============== ========= ====================

<FN>
(1) Also represents cost for federal income tax purposes.
</FN>


                                                                S-10







                                                        HRPT PROPERTIES TRUST
                                                        SCHEDULE IV-continued
                                                    MORTGAGE LOANS ON REAL ESTATE
                                                          December 31, 1998
                                                       (Dollars in thousands)


         Reconciliation of the carrying amount of mortgage loans at the beginning of the period:

                                                                                                                      
         Balance at January 1, 1996                                                                                       $139,248
            New mortgage loans                                                                                               5,918
            Collections of principal, net of discounts                                                                      (7,921)
                                                                                                                    ----------------
         Balance at December 31, 1996                                                                                      137,245
            New mortgage loans                                                                                               1,520
            Collections of principal, net of discounts                                                                     (37,263)
                                                                                                                    ----------------
         Balance at December 31, 1997                                                                                      101,502
            Collections of principal, net of discounts                                                                     (33,408)
                                                                                                                    ----------------
         Balance at December 31, 1998                                                                                      $68,094
                                                                                                                    ================



                                                                S-11







                                   SIGNATURES

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

                                      HRPT PROPERTIES TRUST

                                      By: /s/ David J. Hegarty
                                          David J. Hegarty
                                          President and Chief Operating Officer
                                          Dated:  March 31, 1999

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
this  report  has  been  signed  below  by the  following  persons,  or by their
attorney-in-fact, in the capacities and on the dates indicated.



Signature                                   Title                                                Date

                                                                                           
/s/ David J. Hegarty                        President and Chief Operating Officer                March 31, 1999
- ------------------------------------
David J. Hegarty


/s/ Ajay Saini                              Treasurer and Chief Financial Officer                March 31, 1999
- ------------------------------------
Ajay Saini


/s/ Bruce M. Gans, M.D.                     Trustee                                              March 31, 1999
- ------------------------------------
Bruce M. Gans, M.D.


/s/ Patrick F. Donelan                      Trustee                                              March 31, 1999
- ------------------------------------
Patrick F. Donelan


/s/ Justinian Manning, C.P.                 Trustee                                              March 31, 1999
- ------------------------------------
Rev. Justinian Manning, C.P.


/s/ Gerard M. Martin                        Trustee                                              March 31, 1999
- ------------------------------------
Gerard M. Martin


/s/ Barry M. Portnoy                        Trustee                                              March 31, 1999
- ------------------------------------
Barry M. Portnoy