WASHINGTON REAL ESTATE INVESTMENT TRUST
S-3, 1995-06-26
REAL ESTATE INVESTMENT TRUSTS
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<PAGE>   1
 
                                                      REGISTRATION NO. 33-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
 
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                    FORM S-3
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                    WASHINGTON REAL ESTATE INVESTMENT TRUST
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                                                   <C>
                 DISTRICT OF COLUMBIA                                       53-0261100
           (STATE OR OTHER JURISDICTION OF                               (I.R.S. EMPLOYER
            INCORPORATION OR ORGANIZATION)                             IDENTIFICATION NO.)
</TABLE>
 
                            ------------------------
 
                            10400 CONNECTICUT AVENUE
                           KENSINGTON, MARYLAND 20895
                                 (301) 929-5900
               (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER
       INCLUDING AREA CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                            ------------------------
 
                            BENJAMIN H. DORSEY, ESQ.
 
                         GENERAL COUNSEL AND SECRETARY
                            10400 CONNECTICUT AVENUE
                           KENSINGTON, MARYLAND 20895
                                 (301) 929-5900
               (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE
               NUMBER INCLUDING AREA CODE, OF AGENT FOR SERVICE)
 
                                   COPIES TO:
 
<TABLE>
<S>                                                   <C>
               JEFFREY E. JORDAN, ESQ.                              THOMAS R. SMITH, JR., ESQ.
           ARENT FOX KINTNER PLOTKIN & KAHN                                BROWN & WOOD
            1050 CONNECTICUT AVENUE, N.W.                             ONE WORLD TRADE CENTER
              WASHINGTON, DC 20036-5339                              NEW YORK, NY 10048-0557
                    (202) 857-6473                                        (212) 839-5535
</TABLE>
 
          APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO PUBLIC:
  AS SOON AS PRACTICABLE AFTER THIS REGISTRATION STATEMENT BECOMES EFFECTIVE.
 
     If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. / /
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. / /
     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. / /
     If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. / /
     If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. /X/
                            ------------------------
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------
                                                               PROPOSED MAXIMUM  PROPOSED MAXIMUM
TITLE OF EACH CLASS OF                          AMOUNT TO BE    OFFERING PRICE  AGGREGATE OFFERING    AMOUNT OF
SECURITIES TO BE REGISTERED                    REGISTERED(1)     PER SHARE(2)        PRICE(2)     REGISTRATION FEE
- ------------------------------------------------------------------------------------------------------------------
<S>                                           <C>             <C>               <C>               <C>
Shares of Beneficial Interest, no par value...    4,025,000        $15.625         $62,890,625       $21,686.43
- ------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------
</TABLE>
 
(1) Includes 525,000 shares of beneficial interest which the Underwriters have
    the option to purchase to cover over-allotments, if any.
 
(2) Estimated solely for the purpose of determining the registration fee
    pursuant to Rule 457(c).
                            ------------------------
 
     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933, OR UNTIL THIS REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
     INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
     REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
     SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR
     MAY OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT
     BECOMES EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR
     THE SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE
     SECURITIES IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE
     UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS
     OF ANY SUCH STATE.
 
                             SUBJECT TO COMPLETION
 
                   PRELIMINARY PROSPECTUS DATED JUNE 26, 1995
 
PROSPECTUS
(WRIT LOGO) 

                                3,500,000 SHARES
 
                    WASHINGTON REAL ESTATE INVESTMENT TRUST

                         SHARES OF BENEFICIAL INTEREST

                            ------------------------
 
     The shares of beneficial interest (the "Shares") of Washington Real Estate
Investment Trust ("WRIT" or the "Trust") are listed on the American Stock
Exchange under the symbol "WRE." On June 23, 1995, the last reported sale price
of the Shares on the American Stock Exchange was $15.125 per Share.

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

 THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
      EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
          SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
           COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
                    PROSPECTUS. ANY REPRESENTATION TO THE
                       CONTRARY IS A CRIMINAL OFFENSE.
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------------------
                                                PRICE TO         UNDERWRITING       PROCEEDS TO
                                                 PUBLIC          DISCOUNT (1)         TRUST(2)
- --------------------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------------------
<S>                                         <C>                <C>                <C>
Per Share................................          $                  $                  $
- --------------------------------------------------------------------------------------------------
Total(3).................................   $                  $                  $
- --------------------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------------------
</TABLE>
 
(1) The Trust has agreed to indemnify the several Underwriters against certain
    liabilities, including liabilities under the Securities Act of 1933. See
    "Underwriting".
 
(2) Before deducting expenses of the offering estimated at $210,000, payable by
    the Trust.
 
(3) The Trust has granted the Underwriters a 30-day option to purchase up to an
    additional 525,000 Shares to cover over-allotments, if any. If all of such
    Shares are purchased, the total Price to Public, Underwriting Discount and
    Proceeds to Trust will be $               , $               and
    $               , respectively. See "Underwriting."

                            ------------------------
 
       THE ATTORNEY GENERAL OF THE STATE OF NEW YORK HAS NOT PASSED ON OR
            ENDORSED THE MERITS OF THIS OFFERING. ANY REPRESENTATION
                          TO THE CONTRARY IS UNLAWFUL.

                            ------------------------
 
     The Shares are offered by the several Underwriters, subject to prior sale,
when, as and if delivered to and accepted by them, subject to approval of
certain legal matters by counsel for the Underwriters. The Underwriters reserve
the right to withdraw, cancel or modify such offer and to reject orders in whole
or in part. It is expected that the delivery of the Shares offered hereby will
be made in New York, New York on or about July   , 1995.

                            ------------------------
MERRILL LYNCH & CO.
              ALEX. BROWN & SONS
                  INCORPORATED
                              A.G. EDWARDS & SONS, INC.
 
                                           LEGG MASON WOOD WALKER
                                                 INCORPORATED

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

                 The date of this Prospectus is July   , 1995.
<PAGE>   3

                                      WRIT
                                   GROWTH OF
                           FUNDS FROM OPERATIONS AND
                                 DIVIDENDS PAID

<TABLE>
<CAPTION>
                  DIVIDENDS          FUNDS FROM
   YEAR             PAID             OPERATIONS
   ----             ----             ----------
    <S>          <C>                <C>
    1980          3,484,210          4,990,351
    1981          4,526,737          6,074,430
    1982          4,929,329          6,590,953
    1983          5,134,851          8,002,590
    1984          8,053,184          9,889,957
    1985          8,344,614         10,919,494
    1986          9,822,265         12,703,890
    1987         12,028,949         13,277,702
    1988         13,087,538         14,587,538
    1989         15,341,742         17,280,718
    1990         17,030,987         19,229,034
    1991         19,672,408         21,707,672
    1992         22,513,368         23,850,876
    1993         24,380,361         26,162,021
    1994         25,981,388         27,100,541
</TABLE>

     IN CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE TRUST'S SHARES
AT A LEVEL ABOVE THAT WHICH MIGHT OTHERWISE PREVAIL IN THE OPEN MARKET. SUCH
TRANSACTIONS MAY BE EFFECTED ON THE AMERICAN STOCK EXCHANGE, IN THE
OVER-THE-COUNTER MARKET OR OTHERWISE. SUCH STABILIZING, IF COMMENCED, MAY BE
DISCONTINUED AT ANY TIME.
 
                                        2

<PAGE>   4
 
                               PROSPECTUS SUMMARY
 
     This summary is qualified in its entirety by reference to the more detailed
information and financial statements appearing elsewhere in this Prospectus or
incorporated herein by reference. Unless otherwise indicated, the information
presented herein assumes that the Underwriters' over-allotment option is not
exercised.
 
                                   THE TRUST
 
     Washington Real Estate Investment Trust ("WRIT" or the "Trust"), founded in
1960, is an equity real estate investment trust investing in income-producing
properties principally in the Greater Washington-Baltimore region. The Trust
owns a diversified portfolio of 38 properties consisting of 13 office buildings,
11 shopping centers, five high-rise apartment buildings and nine industrial
distribution properties.
 
     WRIT's principal objective is to increase operating income by investing in
high quality real estate with strong growth potential in prime locations and
aggressively managing these properties with active leasing and capital
improvement programs.
 
     The percentage leased at March 31, 1995 for the Trust's properties was 91%
for office buildings, 94% for shopping centers, 96% for apartment buildings and
95% for industrial distribution properties.
 
     Total debt (all medium-term) on May 31, 1995 was $41,000,000, which
represented less than 9% of the market capitalization of the Trust.
 
     WRIT's income from operations and funds from operations have increased for
29 consecutive years. WRIT concentrates on increasing its funds from operations
to achieve its objective of paying increasing dividends to its shareholders.
Consecutive quarterly dividends have been paid for 33 years and the annual
dividend paid has increased every year since 1970. The most recent dividend
increase was to $.25 per Share payable June 30, 1995 to shareholders of record
on June 16, 1995, representing an indicated current annual rate of $1.00. Since
1980, combined Share splits have totaled 10-for-1.
 
     The principal offices of the Trust are located at 10400 Connecticut Avenue,
Kensington, Maryland 20895, telephone (301) 929-5900/(800) 565-9748.
 
                                  THE OFFERING
 
<TABLE>
<S>                                             <C>
Shares Offered...............................   3,500,000
Shares to be Outstanding after the
  Offering...................................   31,742,544
Use of Proceeds..............................   To repay indebtedness outstanding under lines
                                                of credit and acquire and/or renovate, expand
                                                  or improve income producing properties.
American Stock Exchange Symbol...............   WRE
</TABLE>
 
                                        3
<PAGE>   5
 
                             SUMMARY FINANCIAL DATA
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                                      THREE MONTHS
                                                                                         ENDED
                                          YEAR ENDED DECEMBER 31,                      MARCH 31,
                              ------------------------------------------------    --------------------
                                1990      1991      1992      1993      1994        1994        1995
                              --------  --------  --------  --------  --------    --------    --------
<S>                           <C>       <C>       <C>       <C>       <C>         <C>         <C>
OPERATING DATA
Real estate rental revenue... $ 30,233  $ 33,311  $ 34,132  $ 39,375  $ 45,511    $ 11,312    $ 12,464
Income before gain on sale of
  real estate................   16,122    18,386    20,429    22,506    23,122       5,805       6,159
Gain on sale of real
  estate.....................        0         0         0       741         0           0           0
Net income...................   16,122    18,386    20,429    23,247    23,122       5,805       6,159
</TABLE>
 
<TABLE>
<CAPTION>
                                                DECEMBER 31,                           MARCH 31,
                              ------------------------------------------------    --------------------
                                1990      1991      1992      1993      1994        1994        1995
                              --------  --------  --------  --------  --------    --------    --------
<S>                           <C>       <C>       <C>       <C>       <C>         <C>         <C>
BALANCE SHEET DATA
Real estate (at cost)........ $113,317  $117,576  $155,765  $170,461  $206,378    $172,711    $225,585
Total assets.................  106,955   135,741   185,673   162,011   178,806     162,418     195,034
Mortgages payable............   12,379    11,329     1,115         0         0           0           0
Lines of credit payable/
  Short-term bank loan.......        0         0    21,000         0    18,000           0      34,000
Shareholders' equity.........   90,621   119,944   159,027   157,348   154,659     156,801     154,040
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                      THREE MONTHS
                                                                                         ENDED
                                          YEAR ENDED DECEMBER 31,                      MARCH 31,
                              ------------------------------------------------    --------------------
                                1990      1991      1992      1993      1994        1994        1995
                              --------  --------  --------  --------  --------    --------    --------
<S>                           <C>       <C>       <C>       <C>       <C>         <C>         <C>
OTHER DATA
Funds from operations (1).... $ 19,187  $ 21,675  $ 23,817  $ 26,122  $ 27,055    $  6,727    $  7,234
Dividends paid...............   17,031    19,672    22,513    24,380    25,981       6,495       6,778
Dividends paid per share
  (2)........................     0.73      0.79      0.84      0.89      0.92        0.23        0.24
</TABLE>
 
- ---------------
(1) Funds from Operations ("FFO"), as defined by the National Association of
    Real Estate Investment Trusts ("NAREIT"), is net income adjusted for
    depreciation and amortization and gains or losses from property sales. FFO
    does not represent cash flows from operations as defined by generally
    accepted accounting principles, should be considered along with, but not as
    an alternative to, net income as an indicator of the Company's operating
    performance and is not indicative of cash available to fund all cash flow
    needs. In March 1995, NAREIT issued a clarification of its definition of
    FFO. The clarification provides that amortization of deferred financing
    costs and depreciation of non-real estate assets are no longer to be added
    back to net income in arriving at FFO and that extraordinary, nonrecurring
    items should be adjusted out of net income. The amounts reflected in this
    Prospectus have been adjusted to incorporate that clarification.
 
(2) Adjusted to give effect to the 3-for-2 share split in May 1992.
 
                                        4
<PAGE>   6
 
                                   THE TRUST
 
GENERAL OPERATING PRACTICES
 
     The Trust generally observes the following operating practices:
 
     Selection of Real Estate Investments:  The Trust purchases properties
principally in the Greater Washington-Baltimore region where its senior
management is located and knows, on a firsthand basis, the market and the
economic factors which affect it. In order to avoid the greater risks of
speculative development, the Trust generally buys existing income producing
properties.
 
     Property Type Diversification:  The Trust seeks to invest in properties
with different supply-demand cycles and growth periods and therefore seeks to
maintain a balanced and diversified portfolio of office buildings, shopping
centers, apartment buildings and industrial distribution properties. The
percentage contribution to the Trust's total real estate rental revenue by
property group for the first quarter of 1995 was as follows:
 
<TABLE>
        <S>                                                                      <C>
        Office Buildings......................................................    42%
        Shopping Centers......................................................    25%
        Apartment Buildings...................................................    23%
        Industrial Distribution Properties....................................    10%
                                                                                 ---
                                                                                 100%
</TABLE>
 
     Tenant Diversification:  The Trust also seeks to maintain a diversified
tenant base in its commercial properties in order to minimize the influence of
any one tenant on the Trust's revenues. As of May 31, 1995, WRIT's commercial
tenant base was diversified among approximately 900 tenants, with the average
tenant occupying less than 3,600 square feet and no single lease accounting for
more than 2.1% of the Trust's annual revenues. As of the same date, annual rents
attributable to all Federal Government tenants totaled approximately 5.0% of the
Trust's annual revenues.
 
     Capitalization and Finance Strategy:  Until recently, the Trust maintained
substantial cash reserves from the proceeds of Share offerings in lieu of
utilizing debt for acquisitions and capital improvements. As a result of changed
market conditions, the Trust now has commitments for bank lines of credit with
medium-term rather than short-term features. For the foreseeable future, the
Trust intends to utilize these credit facilities to fund acquisitions and major
capital improvements. The Trust intends to retire these debt obligations from
future Share offerings. The Trust's management believes this method of funding
for future investment provides greater flexibility for timing of public Share
offerings, reduces exposure to yield maintenance costs and avoids lock out from
prepayment features found in long-term debt agreements.
 
     In determining its borrowing policy, the Trust also considers its debt
service coverage ratio (funds from operations plus debt service divided by the
debt service). A ratio of 3:1 is generally considered conservative and the Trust
intends to maintain its debt service coverage ratio in excess of this. Capital
market conditions may from time to time influence management to reconsider this
policy if it deems that a change is in the best interest of the Trust.
 
     The Trust currently has unsecured bank lines of credit and commitments
totaling $75,000,000. These commitments permit the Trust to extend the term of
the loans outstanding for up to a period of 5 years at the Trust's option. At
March 31, 1995, $34,000,000 was outstanding on these lines. After the purchase
of the Tech 100 Industrial Park on May 17, 1995, the Trust had $41,000,000
outstanding on these lines. As of May 31, 1995, the weighted average interest
rate for these borrowings was 6.8%.
 
     100% Ownership:  The Trust currently owns 100% of the equity of all of its
properties and has no partners, participating mortgages or other equity or
income sharing arrangements.
 
     Although management of the Trust anticipates that it will generally
continue to follow the foregoing practices, management is not bound to do so and
may change particular practices in light of future economic conditions and other
relevant factors.
 
                                        5
<PAGE>   7
 
RECENT DEVELOPMENTS
 
  Management Transition
 
     In March of 1995, Arthur A. Birney, a co-founder and Trustee of the Trust,
became Chairman of the Board of Trustees and Edmund B. Cronin, Jr., President,
Chief Operating Officer and Trustee, became Chief Executive Officer, succeeding
B. Franklin Kahn, who had served as Chairman and Chief Executive Officer until
his retirement.
 
     The Trust has also increased its senior management strength and depth with
the addition of Larry E. Finger, Senior Vice President and Chief Financial
Officer, in December 1993, Thomas L. Regnell, Vice President -- Acquisitions, in
January 1995 and Mary Beth Avedesian, Vice President -- Investments, in March
1995. See "Management".
 
  Property Acquisitions
 
     During the past 12 months, the Trust acquired the following properties:
 
     - Tycon Plaza II and III office buildings containing approximately 293,000
       rentable square feet, in Tysons Corner, Virginia
 
     - The Shoppes of Foxchase, a 128,000 rentable square foot shopping center,
       in Alexandria, Virginia
 
     - 6110 Executive Boulevard, a 198,000 rentable square foot office building,
       in Rockville, Maryland
 
     - Tech 100 Industrial Park, a 167,000 square foot industrial distribution
       complex in Howard County, Maryland, three miles from Baltimore-Washington
       International Airport.
 
     The aggregate purchase price of these properties totaled approximately
$53,000,000, and the Trust anticipates that these properties (including capital
improvements) will produce an average first full year return on investment
(funds from operations divided by total investment) of 11.3%. See "Description
of Real Estate Investments".
 
  Property Repositionings
 
     In late 1994 and continuing into 1995, the Trust has repositioned the
following properties, through capital improvements, to enable them to compete at
higher rental levels in their markets:
 
     - Chevy Chase Metro Plaza -- The Trust is adding 10,000 square feet of
       rentable area within a previously occupied two-story theater along with
       other building improvements. Resulting rental increases are expected to
       increase this property's anticipated annual operating income by 55%.
 
     - 1901 Pennsylvania Avenue, N.W., Washington, D.C. -- Major renovations,
       expected to be completed in the third quarter of 1995, to the main lobby,
       building hallways, common areas and restrooms, and modernizing of the
       elevator equipment, elevator cabs and building mechanical systems are
       expected to enable this building to compete successfully in the downtown
       Washington, D.C. market.
 
     Renovations and expansions, including those listed above, are currently
underway or are planned at several of the Trust's properties, the estimated
aggregate cost of which is approximately $8,000,000 for 1995.
 
     See "Description of Real Estate Investments" below for further information
regarding the improvements made to certain properties.
 
GREATER WASHINGTON-BALTIMORE REAL ESTATE MARKET
 
     The Greater Washington-Baltimore regional real estate market continues to
be one of the strongest in the United States. All sectors of the region's
commercial and multi-family real estate market are experiencing relatively high
occupancy levels. Rents have stabilized, concessions have substantially receded,
and little speculative development is taking place in the region. Though credit
for real estate acquisitions and
 
                                        6
<PAGE>   8
 
development is more available now than in recent years, the providers of credit
continue to be very selective. This situation reduces competition for
acquisitions.
 
     The CMSA (Consolidated Metropolitan Statistical Area) region which includes
metropolitan Washington-Baltimore is the fourth largest region in the United
States with a population in excess of 6.9 million. Additionally, the region is
ranked number one nationally in both median household income and population with
higher education at the undergraduate and post graduate level based on Bureau of
Census statistical data. The Greater Washington-Baltimore regional economy is
principally service industry oriented and, particularly in the case of the
Greater Washington area, is driven by the presence of the Federal Government.
There has been, and management expects there will continue to be, a shrinking in
the size of the Federal Government as evidenced by, among other things, a
decrease in direct Federal Government employment. However, to date, this
decrease has been more than offset by an increase in employment in the private
business sectors of the Greater Washington economy. While the Federal Government
workforce reductions to date have not resulted in any major negative impact on
the business of the Trust, no assurance can be given as to the effect on the
Trust of further cutbacks in Federal spending or employment.
 
     The strength of the Greater Washington-Baltimore region is evidenced by the
research of such groups as the Metropolitan Council of Governments and The
Greater Washington Research Center, which demonstrates that as a result of the
increased outsourcing of government goods and services requirements the region
is experiencing positive growth, though at a slower rate than during 1980-1989.
As the chart below demonstrates, during 1994 regional Federal Government
employment declined by approximately 11,000 while private sector employment
increased by approximately 56,000.
 
                           WAGE AND SALARY EMPLOYMENT
                                WASHINGTON PMSA*
                             JANUARY 1994 AND 1995
                           (EMPLOYMENT IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                               AT         AT
                              SECTOR                          1/94       1/95      CHANGE
        --------------------------------------------------   -------    -------    ------
        <S>                                                  <C>        <C>        <C>
        Private...........................................   1,684.8    1,740.5      55.7
        Federal Government................................     381.2      370.3     -10.9
</TABLE>
 
        -------------------------------
        * Primary Metropolitan Statistical Area (PMSA) employment data
          reflect official re-benchmarked totals for 1994 and
          preliminary 1995 estimates.
 
     The Trust has historically focused its leasing efforts toward the private
sector smaller space user. Only 5% of the Trust's anticipated 1995 gross revenue
is generated from space leased to the Federal Government. Management believes
that the combination of a strong capital structure, access to capital, strong
organizational capabilities and firsthand knowledge of regional economic and
real estate trends uniquely positions the Trust to take advantage of attractive
acquisition opportunities. In particular, the Trust's property type
diversification, property management and enhancement and leasing capabilities
enable it to be very flexible in property selection with the goal of increasing
property operating income over the near term and property values over the long
term.
 
                                        7
<PAGE>   9
 
                                USE OF PROCEEDS
 
     The net proceeds to be received by the Trust from the issuance and sale of
the Shares offered hereby (the "Offering") are estimated at $
($               if the Underwriters' over-allotment option is exercised in
full). The Trust intends to use these funds to repay outstanding indebtedness
under its lines of credit and acquire and/or renovate, expand or improve
income-producing properties. As of May 31, 1995, the amounts outstanding,
interest rates, interest lock-in dates and maturities on the lines of credit
were as follows:
 
<TABLE>
<CAPTION>
                          INTEREST
  AMOUNT       INTEREST     FIXED
OUTSTANDING    RATE       THROUGH      MATURITY
- -----------    ----       --------     -------
<S>            <C>        <C>          <C>
$18,000,000    6.94%       2/20/96     8/25/95*
 16,000,000    6.80        9/08/95     1/31/99
  7,000,000    6.43       11/15/95     1/31/99
- -----------    ----
$41,000,000    6.80%**
</TABLE>
 
         * Subject to extension until 8/25/98 at the Trust's option.
        ** Weighted average
 
The amounts drawn under the lines of credit (plus the proceeds of previous Share
offerings) were used to acquire the Tycon, Foxchase, Executive Boulevard and
Tech 100 properties. See "The Trust -- Recent Developments -- Property
Acquisitions". It is expected that properties purchased in the future will be of
the same general character as those presently held by the Trust.
 
     Pending the uses described above, the net proceeds may be invested in
certificates of deposit, highly rated commercial paper or other similar
interest-bearing government or rated corporate securities.
 
                                 CAPITALIZATION
 
     The following table sets forth the capitalization of the Trust as of March
31, 1995, as adjusted to give effect to the Offering and the anticipated use of
a portion of the net proceeds of the Offering to repay indebtedness outstanding
under the Trust's lines of credit.
<TABLE>
<CAPTION>
                                                                          MARCH 31, 1995
                                                                       ---------------------
                                                                                       AS
                                                                        ACTUAL       ADJUSTED
                                                                       --------      -------
                                                                          (IN THOUSANDS)
 
<S>                                                                    <C>           <C>
Lines of credit payable:............................................   $ 34,000(1)   $     0(1)
                                                                       --------      -------
Shareholders' equity:
  Shares of beneficial interest; without par value; unlimited
     authorization: 28,242,544 issued and outstanding, and
     31,742,544, as adjusted........................................    138,722
  Undistributed gains on real estate dispositions...................     15,319       15,319
                                                                       --------      -------
       Total shareholders' equity...................................    154,041
                                                                       --------      -------
       Total capitalization.........................................   $188,041      $
                                                                       ========      =======
</TABLE>
 
- ---------------
(1) As of May 31, 1995, the Trust's unsecured lines of credit have an
    outstanding balance of $41,000,000, including the $7,000,000 borrowed for
    the purchase of the Tech 100 Industrial Park. The entire $41,000,000 balance
    is anticipated to be paid off with a portion of the proceeds of the
    Offering.
 
                                        8
<PAGE>   10
 
                                   DIVIDENDS
 
     The Trust's policy is to pay quarterly dividends aggregating annually at
least 95% of its ordinary taxable income. Decisions by the Trustees as to
distributions of capital gains are made on a case by case basis. The Trust's
policy complies with the current distribution provisions of federal income tax
laws applicable to real estate investment trusts and, assuming compliance with
other requirements, income so distributed is not taxable to the Trust under such
laws. The declaration of dividends is discretionary with the Trustees and
depends upon the Trust's distributable funds, financial requirements, tax
considerations and other factors. It is the present intention of the Trustees to
consider the payment of cash dividends each quarter, but no assurance can be
given that past dividend practices will be followed in the future.
 
     The tax status of 1994 dividends were reported as:
 
<TABLE>
<CAPTION>
                     RETURN
   ORDINARY  CAPITAL OF
   INCOME    GAINS   CAPITAL  TOTAL
   -----     ----    ----     -----
   <S>       <C>     <C>      <C>
   90.5%      --     9.5%     100%
</TABLE>
 
                           DIVIDEND REINVESTMENT PLAN
 
     The Trust has a Dividend Reinvestment Plan (the "Plan") which allows
shareholders to acquire additional Shares by automatically reinvesting all or
part of their cash dividends. Shares are acquired pursuant to the Plan at a
price equal to the prevailing market price of such Shares, without payment of
any brokerage commission or service charge by the participant. The Plan also
allows participating shareholders to purchase Shares pursuant to the same terms
and in the same manner as cash dividends are invested in amounts of not less
than $100 nor more than $25,000 per calendar year, without payment of any
brokerage commission or service charge by the participant. Shareholders who do
not participate in the Plan continue to receive cash dividends, as declared.
 
                                        9
<PAGE>   11





        On Page 10 of the Prospectus there appears a map of the Greater
Washington, D.C. Metropolitan area indicating the location of the Trust's 38
properties and indicates whether each property is a shopping center, an office
building, industrial distribution property or an apartment building.  There is
also a list of properties conforming to the list appearing on the following 
pages of the Prospectus.
















                                      10
 
<PAGE>   12
 
                            INVESTMENTS OF THE TRUST
 
     The following table describes the Trust's real estate investment portfolio.
All dollar amounts are in thousands and all information is as of March 31, 1995,
except for Tech 100 Industrial Park for which information is as of May 17, 1995,
the date of acquisition. Net square footage does not include garage or surface
parking. The percent leased is the percentage of net rentable space leased
including signed leases for space not yet occupied by the tenants.
 
<TABLE>
<CAPTION>
                                                                                                       CAPITAL
       REAL ESTATE INVESTMENTS                          NET                                          IMPROVEMENTS
        (CORRESPONDING NUMBER              YEAR       SQUARE        PERCENT         ACQUISITION         SINCE           TOTAL
           ON PAGE 10 MAP)               ACQUIRED      FEET          LEASED             COST         ACQUISITION      INVESTMENT
- --------------------------------------   ---------   ---------      --------        ------------     -----------     ------------
<S>                                      <C>         <C>            <C>             <C>              <C>             <C>
SHOPPING CENTERS
Takoma Park (1).......................     1963         58,811           100%       $  1,500,000     $     1,000     $  1,501,000
Prince William Plaza (2)..............     1968         53,999            87             992,000         385,000        1,377,000
Westminster (3).......................     1972        171,531            89           2,442,000       1,675,000        4,117,000
Dover Mart (4)........................     1973         44,044           100             707,000         664,000        1,371,000
Concord Centre (5)....................     1973         76,383            91           1,263,000       2,605,000        3,868,000
Clairmont (6).........................     1976         40,455           100           1,046,000         634,000        1,680,000
Wheaton Park (7)......................     1977         46,716           100           1,480,000         690,000        2,170,000
Bradlee (8)...........................     1984        167,974           100           9,580,000       3,402,000       12,982,000
Chevy Chase Metro Plaza (9)...........     1985         49,893            93           5,854,000       2,344,000        8,198,000
Montgomery Village (10)...............     1992        196,464            93          20,730,000         458,000       21,188,000
Shoppes of Foxchase (11)..............     1994        127,564            94           8,818,000         261,000        9,079,000
                                                     ---------           ---        ------------     -----------     ------------
    Sub-Total.........................               1,033,834            94%       $ 54,412,000     $13,119,000     $ 67,531,000
                                                     ---------           ---        ------------     -----------     ------------
OFFICE BUILDINGS
1901 Pennsylvania Ave. (12)...........     1977         96,506            51%(a)    $  4,373,000     $ 3,243,000     $  7,616,000
WRIT Building (13)....................     1979         65,885            96           1,912,000       2,900,000        4,812,000
One Metro Square (14).................     1979        208,243            90          11,709,000       5,222,000       16,931,000
444 N. Frederick Ave. (15)............     1989         65,809            90           4,630,000       1,196,000        5,826,000
7700 Leesburg Pike (16)...............     1990        122,222            95           7,670,000       2,107,000        9,777,000
Arlington Financial (17)..............     1992         51,655           100           6,293,000         136,000        6,429,000
515 King Street (18)..................     1992         78,073            98           8,034,000         605,000        8,639,000
Saratoga Office Bldg. (19)............     1993         59,013            80           3,018,000         366,000        3,384,000
Lexington Office Bldg. (20)...........     1993         47,751           100           2,442,000         133,000        2,575,000
Brandywine Center (21)................     1993         34,982           100           1,454,000         104,000        1,558,000
Tycon Plaza II (22)...................     1994        141,043            97          10,505,000         356,000       10,861,000
Tycon Plaza III (23)..................     1994        151,670            99          11,049,000         428,000       11,477,000
6110 Executive Boulevard (24).........     1995        198,252            93          16,409,000          24,000       16,433,000
                                                     ---------           ---        ------------     -----------     ------------
    Sub-Total.........................               1,321,104            91%       $ 89,498,000     $16,820,000     $106,318,000
                                                     ---------           ---        ------------     -----------     ------------
APARTMENT BUILDINGS/UNITS
3801 Connecticut Avenue /307 (29).....     1963        242,000            97%       $  3,098,000     $ 3,413,000     $  6,511,000
Roosevelt Towers/191 (25).............     1965        229,000            95           2,332,000       1,531,000        3,863,000
Park Adams/200 (26)...................     1969        210,000            99           1,940,000       2,308,000        4,248,000
Country Club Towers/227 (28)..........     1969        276,000            92           2,861,000       2,251,000        5,112,000
Munson Hill Towers/279 (27)(b)........     1970        340,000            98           3,337,000       3,492,000        6,829,000
                                                     ---------           ---        ------------     -----------     ------------
    Sub-Total (1,200 units)...........               1,297,000            96%       $ 13,568,000     $12,995,000     $ 26,563,000
                                                     ---------           ---        ------------     -----------     ------------
INDUSTRIAL DISTRIBUTION PROPERTIES
Shirley I-395 (30)....................     1961        112,585           100%       $  1,917,000     $   948,000     $  2,865,000
Dept. of Commerce (31)................     1971        105,000           100           1,356,000       1,261,000        2,617,000
V Street (33).........................     1973         30,753            25             443,000         143,000          586,000
Capital Freeway (34)..................     1974        145,000           100           1,505,000       2,613,000        4,118,000
Fullerton (35)........................     1985        103,339            95           4,267,000         606,000        4,873,000
Ravensworth Center (32)...............     1986         29,000           100           1,451,000         336,000        1,787,000
Pepsi-Cola (36).......................     1987         68,750           100           2,552,000       1,514,000        4,066,000
Charleston (37).......................     1993         85,267            92           4,136,000         126,000        4,262,000
Tech 100 (38).........................     1995        167,267            96           6,832,000             N/A        6,832,000
                                                     ---------           ---        ------------     -----------     ------------
    Sub-Total.........................                 846,961            95%       $ 24,459,000     $ 7,547,000     $ 32,006,000
                                                     ---------           ---        ------------     -----------     ------------
TOTAL.................................               4,498,899            94%       $181,937,000     $50,481,000     $232,418,000
                                                     =========           ===        ============     ===========     ============
</TABLE>
 
- ---------------
(a) 1901 Pennsylvania Avenue is undergoing significant renovations; see "Recent
    Developments" and "Description of Real Estate Investments".
 
(b) The site of Munson Hill Towers apartments is rented under a ground lease
    requiring annual payments of $22,590 until the expiration of the lease in
    2060.
 
                                       11
<PAGE>   13
 
                     DESCRIPTION OF REAL ESTATE INVESTMENTS
 
     The Trust's portfolio of 38 properties consists of 13 office buildings with
approximately 1,321,000 rentable square feet, 11 shopping centers with
approximately 1,034,000 rentable square feet, five high-rise apartment buildings
with approximately 1,200 units and nine industrial distribution properties with
approximately 847,000 square feet. In the opinion of management, the Trust's
properties are adequately protected by "all risk" insurance coverage, have been
well maintained and are in good condition.
 
     The following are descriptions of WRIT's most significant properties in
each property group, in terms of total investment.
 
OFFICE BUILDING GROUP:
 
Tycon Plaza II and III
8229-8245 Boone Boulevard
Tysons Corner, Virginia
 
     In June 1994, the Trust purchased these two 8-story office buildings
containing a total of 293,000 rentable square feet plus on-site parking for 895
cars. At the time of purchase, the property was 71% leased and at March 31,
1995, was 98% leased. Over the past year, extensive improvements totaling
approximately $784,000 have been made in order to reposition the property in its
market.
 
One Metro Square
51 Monroe Street
Rockville, Maryland
 
     One Metro Square, purchased in 1979, is a 22-story office building
containing 208,000 rentable square feet of office and retail space. The property
includes an indoor garage with 360 parking spaces. The building is connected by
elevated pedestrian bridges to the Montgomery County Office Building-Courthouse
complex and to a Washington Metro (subway) station. Portions of the roof are
leased for communications antennae, creating additional current annual income of
approximately $270,000.
 
6110 Executive Boulevard
Rockville, Maryland
 
     In January 1995, the Trust purchased this 10-story office building
containing 198,000 rentable square feet. This property includes a detached
3-story parking deck and on-site parking area for 565 cars. At the time of
purchase, the property was 91% leased. At March 31, 1995, the property was 93%
leased, and new leases are being signed at rents of $17.50 per square foot,
which is above the building average of $15.86.
 
7700 Leesburg Pike
Falls Church, Virginia
 
     In October 1990, WRIT purchased 7700 Leesburg Pike, a circular four-story
office building and parking deck with an interior wooded atrium and office tower
in the center. The property contains a total of 122,000 rentable square feet,
and is located just inside the Capital Beltway (I-495) near Tysons Corner,
Virginia. There are approximately 465 decked and open parking spaces. The
building won an American Institute of Architecture award and is set in a wooded
campus environment on seven acres of land. The existing building was 95% leased
at March 31, 1995, and there is strong leasing interest from prospective tenants
for additional space. Plans and specifications are now complete for the addition
of 20,000 square feet of office space to the top deck of the parking structure.
Completion of the construction of the addition is expected in the fourth quarter
of 1995.
 
                                       12
<PAGE>   14
 
1901 Pennsylvania Avenue, N.W.
Washington, D.C.
 
     1901 Pennsylvania Avenue is an 11-story office building with 97,000
rentable square feet located three blocks west of the White House and two blocks
from a Washington Metro station. As the result of three lease expirations in
late 1994 and early 1995, this property was 51% leased at March 31, 1995. Though
this occupancy level is not acceptable, it provides the Trust with an
opportunity to make major capital improvements to this 35-year old building. The
Trust has remodeled the lobby, replaced the roof and is in the process of
modernizing the hallways, elevators, mechanical systems and restrooms. The
Pennsylvania Avenue location and the desire of the Trust to lease to small space
users, along with the upgraded building features, are expected to reposition
this property in its market.
 
SHOPPING CENTER GROUP:
 
Montgomery Village Center
Montgomery Village Avenue
Gaithersburg, Maryland
 
     In December 1992, the Trust purchased Montgomery Village Center, a Giant
Food supermarket anchored shopping center, containing 169,000 square feet of
retail space, 28,000 square feet of townhouse-type office space and on-site
parking for 791 cars. At March 31, 1995, this property was 93% leased. This
property is located in the Montgomery Village Planned Unit Development
("P.U.D."), and its value is substantially enhanced by the controlled nature of
the zoning restrictions in the P.U.D. and in the Gaithersburg, Maryland area in
general with its existing restrictions on commercial growth and lack of
available building sites.
 
Bradlee Shopping Center
3600 King Street
Alexandria, Virginia
 
     The Bradlee Shopping Center contains 168,000 square feet of rentable area,
and existing tenants include Giant Food, G.C. Murphy, Rite-Aid and 43 other
tenants. As the Trust has expanded and improved the shopping center and its
tenancy, annual rents have increased from $1,124,000 in 1985, the first full
year of the property's operations under WRIT, to $3,614,000 in 1995. Located in
a densely populated area with few vacant building sites, this property was 100%
leased at March 31, 1995.
 
The Shoppes of Foxchase
4600 Duke Street
Alexandria, Virginia
 
     In 1994, the Trust purchased the Shoppes of Foxchase containing 128,000
rentable square feet, plus on-site parking for 583 cars. The center is anchored
by Rite-Aid and Magruder's stores and was 94% leased at March 31, 1995. The
timing of various lease expirations affords the Trust opportunities to enhance
the property's gross revenues over the near term. In the meantime, the property
is earning a 12% return on investment (funds from operations divided by total
investment).
 
Chevy Chase Metro Plaza
5252 Wisconsin Avenue, N.W.
Washington, D.C.
 
     The Trust has recently repositioned this property. Beginning in the fourth
quarter of 1994, with completion expected in the third quarter of 1995, the
property is being increased in size by the addition of 10,000 square feet
through the termination of a movie theater lease, installation of two floors in
the theater area and the renovation of other vacant space in the building. The
property now contains 49,000 square feet of retail space. All of the new
addition and renovation area, totaling 31,500 square feet, has been leased to
T.J. Maxx. Riggs National Bank and two restaurants occupy the balance of the
leased space. There is strong tenant interest in leasing the remaining 10,000
square feet in the property. Interior parking is provided in the
 
                                       13
<PAGE>   15
 
attached three deck parking garage containing 133 parking spaces. This property
was formerly known as Jenifer One Shopping Center and is located in the Chevy
Chase area of the District of Columbia, adjacent to a Metro entrance. Nearby
shopping anchored by Lord & Taylor, Saks Fifth Avenue and Neiman-Marcus provides
substantial retail traffic.
 
APARTMENT BUILDING GROUP:
 
Munson Hill Towers
6129 Leesburg Pike
Falls Church, Virginia
 
     Munson Hill Towers is a luxury, architecture award-winning, 12-story
apartment building that contains 279 apartments and is located approximately
eight miles from downtown Washington, D.C. The 12 1/2 acre property upon which
the building is situated includes a swimming pool, tennis court and other
recreational facilities. In addition, there are 450 on-site parking spaces. This
property was 98% leased at March 31, 1995.
 
3801 Connecticut Avenue, N.W.
Washington, D.C.
 
     3801 Connecticut Avenue is a nine-story apartment building containing 307
apartment units and 3,150 square feet of office space. The building has 92
indoor parking spaces. The apartments are subject to District of Columbia rent
control laws, which allow landlords to make rent increases tied to the rate of
inflation (subject to an annual maximum of 10%) and also allow additional rent
increases as units are re-rented to new tenants. This property was 97% leased at
March 31, 1995.
 
INDUSTRIAL DISTRIBUTION PROPERTY GROUP:
 
Tech 100 Industrial Park
N/E/C Route #100 and Route #1
Howard County, Maryland
 
     In May 1995, the Trust purchased the Tech 100 Industrial Park, a 3-building
industrial distribution complex containing 167,000 square feet plus on-site
parking for 331 cars. Tech 100 is located 25 miles northeast of Washington, D.C.
and 7 miles southwest of Baltimore, Maryland, in the Route 100 Industrial Park
which contains 2.5 million square feet of industrial distribution space within 3
miles of Baltimore-Washington International Airport. Route 100 is a major
arterial road connecting Interstate 95 with Interstate 97 and Route 301. At the
time of acquisition, the property was 96% leased. With leases beginning to
mature, the Trust expects to renew tenant leases at current market rental rates,
which it believes are above existing rates on maturing leases.
 
Fullerton Business Center
7401 Fullerton Road
Springfield, Virginia
 
     Fullerton Business Center is located in the 2,000,000 square foot Fullerton
Industrial Park. This multi-tenanted property contains 103,000 square feet plus
on-site parking for 247 cars. At March 31, 1995, the property was 95% leased.
 
                                       14
<PAGE>   16
 
                            SELECTED FINANCIAL DATA
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
     The following table sets forth selected financial data for the Trust and
should be read in conjunction with the Financial Statements and Notes
incorporated herein by reference.
 
<TABLE>
<CAPTION>
                                                                                              THREE MONTHS ENDED
                                                 YEAR ENDED DECEMBER 31,                           MARCH 31,
                                 --------------------------------------------------------    ---------------------
                                   1990        1991        1992        1993        1994        1994         1995
                                 --------    --------    --------    --------    --------    --------     --------
<S>                              <C>         <C>         <C>         <C>         <C>         <C>          <C>
OPERATING DATA
Real estate rental revenue....   $ 30,233    $ 33,311    $ 34,132    $ 39,375    $ 45,511    $ 11,312     $ 12,464
Real estate expenses..........     (9,557)    (10,089)    (10,330)    (11,830)    (14,031)     (3,280)      (3,897)
                                 --------    --------    --------    --------    --------    --------     --------
                                   20,676      23,222      23,802      27,545      31,480       8,032        8,567
Depreciation..................     (3,065)     (3,289)     (3,388)     (3,616)     (3,933)       (922)      (1,075)
                                 --------    --------    --------    --------    --------    --------     --------
Income from real estate.......     17,611      19,933      20,414      23,929      27,547       7,110        7,492
Other income (expense)........      2,213       2,326       3,311       1,496        (550)       (654)         102
Interest expense..............     (1,053)     (1,080)       (454)        (61)       (614)          0         (532)
General and administrative....     (2,649)     (2,793)     (2,842)     (2,858)     (3,261)       (651)        (903)
                                 --------    --------    --------    --------    --------    --------     --------
Income before gain on sale of
  real estate.................     16,122      18,386      20,429      22,506      23,122       5,805        6,159
Gain on sale of real estate...          0           0           0         741           0           0            0
                                 --------    --------    --------    --------    --------    --------     --------
Net income....................   $ 16,122    $ 18,386    $ 20,429    $ 23,247    $ 23,122    $  5,805     $  6,159
                                 =========   =========   =========   =========   =========   =========    =========
Income before gain on sale of
  real estate per share (1)...   $   0.69    $   0.74    $   0.76    $   0.80    $   0.82    $   0.21     $   0.22
                                 =========   =========   =========   =========   =========   =========    =========
Net income per share (1)......   $   0.69    $   0.74    $   0.76    $   0.82    $   0.82    $   0.21     $   0.22
                                 =========   =========   =========   =========   =========   =========    =========
</TABLE>
 
<TABLE>
<CAPTION>
                                                       DECEMBER 31,                                MARCH 31,
                                 --------------------------------------------------------    ---------------------
                                   1990        1991        1992        1993        1994        1994         1995
                                 --------    --------    --------    --------    --------    --------     --------
<S>                              <C>         <C>         <C>         <C>         <C>         <C>          <C>
BALANCE SHEET DATA
Real estate (at cost).........   $113,317    $117,576    $155,765    $170,461    $206,378    $172,711     $225,585
Total assets..................    106,955     135,741     185,673     162,011     178,806     162,418      195,034
Mortgages payable.............     12,379      11,329       1,115           0           0           0            0
Lines of credit payable/
  Short-term bank loan........          0           0      21,000           0      18,000           0       34,000
Shareholders' equity..........     90,621     119,944     159,027     157,348     154,659     156,801      154,040
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                              THREE MONTHS ENDED
                                                 YEAR ENDED DECEMBER 31,                           MARCH 31,
                                 --------------------------------------------------------    ---------------------
                                   1990        1991        1992        1993        1994        1994         1995
                                 --------    --------    --------    --------    --------    --------     --------
<S>                              <C>         <C>         <C>         <C>         <C>         <C>          <C>
OTHER DATA
Funds from operations (2).....   $ 19,187    $ 21,675    $ 23,817    $ 26,122    $ 27,055    $  6,727     $  7,234
Weighted average number of
  shares outstanding (1)......     23,223      24,708      26,910      28,223      28,239      28,233       28,243
Dividends paid................   $ 17,031    $ 19,672    $ 22,513    $ 24,380    $ 25,981    $  6,495     $  6,778
Dividends paid per share
  (1).........................   $   0.73    $   0.79    $   0.84    $   0.89    $   0.92    $   0.23     $   0.24
</TABLE>
 
- ---------------
(1) Adjusted to give effect to the 3-for-2 share split in May 1992.
 
(2) Funds from Operations ("FFO"), as defined by the National Association of
    Real Estate Investment Trusts ("NAREIT"), is net income adjusted for
    depreciation and amortization and gains or losses from property sales. FFO
    does not represent cash flows from operations as defined by generally
    accepted accounting principles, should be considered along with, but not as
    an alternative to, net income as an indicator of the Company's operating
    performance and is not indicative of cash available to fund all cash flow
    needs. In March 1995, NAREIT issued a clarification of its definition of
    FFO. The clarification provides that amortization of deferred financing
    costs and depreciation of non-real estate assets are no longer to be added
    back to net income in arriving at FFO and that extraordinary, nonrecurring
    items should be adjusted out of net income. The amounts reflected in this
    Prospectus have been adjusted to incorporate that clarification.
 
                                       15
<PAGE>   17
 
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
RESULTS OF OPERATIONS
 
     WRIT's fundamental emphasis is on the growth of cash flow from operating
activities. Dividends to shareholders are based upon these cash flows. WRIT's
capital improvements, leasing and management, and acquisitions of additional
properties are the major contributors to sustained growth of cash flows.
 
     Occupancy rates have a major impact on rental revenue. Other factors such
as new or renewal leases at market rates, Consumer Price Index based annual
rental rate increases, increases in rentable area, timing of new property
acquisitions and certain other capital expenditures also influence rental
revenue.
 
  Three Months Ended March 31, 1995 and 1994:
 
     Income from real estate in the first quarter of 1995 of $7,492,497
increased 5% compared with $7,110,032 for the first quarter of 1994. This
increase is primarily attributable to the Tycon Plaza II and III office
buildings acquired June 1, 1994, the Shoppes of Foxchase acquired June 30, 1994
and the 6110 Executive Boulevard office building acquired January 26, 1995. Net
income for the three months ended March 31, 1995 in the amount of $6,159,411 or
$.22 per share increased 6% from $5,805,007 or $.21 per share from the
comparable quarter of 1994.
 
     The average occupancy of 95% for the year 1994 decreased to 93% for the
first quarter of 1995. This decrease is due primarily to vacancies at one of
WRIT's office buildings, 1901 Pennsylvania Avenue and one shopping center, Chevy
Chase Metro Plaza. In late 1994, WRIT commenced a major capital improvement
program at 1901 Pennsylvania Avenue in order to promote the expeditious lease-up
of this property. On March 23, 1995, T.J. Maxx, a national retailer, took
possession of 31,500 square feet of space at Chevy Chase Metro Plaza. This
increased the occupancy level from 39% on March 22, 1995 to 90% on the date of
possession. The term of this lease is ten years.
 
     Real estate operating expenses as a percentage of revenue were 31% for the
three months ended March 31, 1995 as compared to 29% for the comparable period
of 1994. This increase is attributable to the decline in occupancy levels in the
first quarter of 1995 as compared to the first quarter of 1994 and to the fact
that operating expenses as a percentage of revenues are higher for office
building properties than all other property types within the WRIT portfolio.
WRIT's percentage of office buildings within its entire real estate portfolio
has increased from 39% at March 31, 1994 to 42% as of March 31, 1995 based on
revenues. This increase is primarily attributable to the acquisitions of the
Tycon Plaza II and III office buildings in June 1994 and the 6110 Executive
Boulevard office building in January 1995.
 
     In the first quarter of 1994, a marketable investment security was written
down to its estimated realizable value, resulting in a charge of $799,571 to
operations. This amount is included in the $654,209 of other expense in the
statement of operations at March 31, 1994.
 
     Investment income declined for the three months ended March 31, 1995
compared to the same period of 1994 due to substantial funds previously invested
in marketable securities being utilized for property acquisitions.
 
     Interest expense was $531,625 for the quarter ended March 31, 1995 as a
result of the $18,000,000 of outstanding advances on the line of credit obtained
in June 1994 and $16,000,000 of outstanding advances obtained in connection with
the January 26, 1995 acquisition of the 6110 Executive Boulevard office
building.
 
     General and administrative expenses increased $252,573 or 39% for the three
months ended March 31, 1995 as compared to the same period in 1994. The majority
of this increase is the result of personnel additions since June 1994 and annual
increases in officers' salaries effective January 1, 1995. These personnel
additions include WRIT's current president and chief executive officer who
joined WRIT in June 1994 as president and chief operating officer.
 
                                       16
<PAGE>   18
 
  Twelve Months Ended December 31, 1994:
 
     The percentage increase in real estate rental revenue from 1993 to 1994 by
property type was as follows:
 
<TABLE>
        <S>                                                                      <C>
        Office Buildings......................................................    34%
        Apartment Buildings...................................................     4%
        Shopping Centers......................................................     5%
        Industrial Distribution Properties....................................    17%
</TABLE>
 
     During 1994, WRIT's office building group achieved increases of 34% in
revenues and 36% in operating income, mostly due to the acquisitions of the
three Heritage office buildings in November 1993 and the two Tycon Plaza office
buildings in June 1994.
 
     The Tycon office buildings were 71% leased at acquisition in June 1994, 90%
leased at December 31, 1994 and 98% leased as of March 31, 1995. The Heritage
properties were acquired in November 1993 and include three office buildings
(the Lexington, Saratoga and Brandywine), and one industrial distribution
property (the Charleston). At December 31, 1994, the Lexington and Brandywine
office buildings were 100% leased and the Saratoga 96% leased.
 
     The income growth from office buildings owned for all of 1993 and 1994 was
due to increases in rental rates and improved occupancy levels at 7700 Leesburg
Pike. This growth was partially offset by a substantial increase in vacancy
during 1994 at the 1901 Pennsylvania Avenue property, which lost 3 major tenants
resulting in an occupancy level of 52% at year end. The Trust commenced a major
capital improvement program at 1901 Pennsylvania Avenue in 1994 in order to
promote the expeditious lease-up of this property. See "Description of Real
Estate Investments".
 
     During 1994, WRIT's apartment building group showed increases of 4% in
revenues and 7% in operating income due to the combination of a 2% increase in
rental rates and an overall increase in occupancy to 97% in 1994 from 95% in
1993, together with an increase in operating expenses of only 1%.
 
     During 1994, WRIT's shopping center group showed an increase of 5% in
revenues and 3% in operating income due to the acquisition of the Shoppes of
Foxchase in June 1994.
 
     Excluding the Shoppes of Foxchase, shopping center revenue was down 1% and
operating income down 4% for 1994. Major elements of the decrease in operating
income included a 10% increase in overall operating expenses and the vacancy at
Chevy Chase Metro Plaza to accommodate renovations. See "Description of Real
Estate Investments". WRIT has leased the majority of the Chevy Chase Metro Plaza
vacancy to T.J. Maxx.
 
     During 1994, WRIT's industrial distribution property group showed increases
of 17% in revenues and 15% in operating income due to the acquisition of the
Charleston Business Center in November 1993 and major occupancy increases at the
Fullerton and Department of Commerce Information Center properties, only
slightly offset by an occupancy decrease at the V Street property.
 
     For 1994, excluding the Charleston Business Center, industrial distribution
property revenue was up 4% and operating income was up 3%. In 1994, rental rates
for these properties declined 1% from 1993, but overall occupancy increased to
94% in 1994 from 89% in 1993.
 
     The average occupancy (for the entire real estate portfolio) was 95% for
1994.
 
     Real estate operating expenses as a percentage of revenue was 31% during
1994.
 
     In 1994, other income (expense) became an expense/charge to operations as a
result of the following:
 
          a) A decline in interest income from 1993 to 1994 due to the use of
     funds for properties acquired in 1994.
 
          b) At March 31, 1994, a marketable investment security was written
     down to its estimated realizable value, resulting in a charge of $800,000
     to operations in the first quarter of 1994. This security was sold in May,
     1994 for its March 31, 1994 realizable value.
 
                                       17
<PAGE>   19
 
          c) During 1994, WRIT was audited by a State Unclaimed Property
     Division, resulting in an assessment to WRIT of $271,000. This amount was
     charged to operations in the fourth quarter of 1994.
 
     Interest expense was $614,000 for the year of 1994 as a result of the
$9,000,000 advance on the line of credit on June 1, 1994 for the acquisition of
Tycon Plaza II and III and an additional advance of $9,000,000 for the
acquisition of The Shoppes of Foxchase on June 30, 1994.
 
CAPITAL RESOURCES AND LIQUIDITY
 
     WRIT has utilized the proceeds of Share offerings, long-term fixed interest
rate debt, lines of credit and cash flow from operations for its capital needs.
The WRIT philosophy has been to acquire income-producing real estate with strong
growth potential and to improve its real estate holdings through carefully
planned additions and improvements to control operating expenses and generate
higher rental income.
 
     On January 26, 1995, WRIT acquired the 6110 Executive Boulevard office
building with approximately 198,000 rentable square feet of office space and a
detached three story parking deck in Rockville, Maryland, at a purchase price of
$16,380,000. Capital improvements (including tenant work) of $2,691,000 to
WRIT's various properties were completed in the first three months of 1995.
After the acquisition of 6110 Executive Boulevard in January 1995 and capital
improvements in the first quarter of 1995, the remainder of cash and marketable
investment securities was approximately $1,008,000 at March 31, 1995.
 
     External sources of capital are available to WRIT from its existing
unsecured credit commitments and management believes that additional sources of
capital are available from selling additional Shares and/or the issuance of
debt. As of May 31, 1995, WRIT had line of credit commitments in place from
commercial banks for up to $75,000,000 of which $41,000,000 is currently
outstanding. These lines of credit may be used to purchase income-producing
property or for capital improvements. Of these lines, $25,000,000 are under a
4-year revolving credit agreement and $50,000,000 are for 1 year with WRIT
having the right to extend the maturity date of advances for up to 4 years. Both
lines of credit are therefore considered medium-term rather than short-term.
 
     Cash flow from operating activities totaled $8,300,000 for the three months
ended March 31, 1995 including net income of $6,200,000 and depreciation of
$1,100,000. Rental revenue has been the principal source of funds to pay the
Trust's operating expenses, interest expense and dividends to shareholders. The
Trust paid a dividend of $6,800,000 during the first quarter.
 
     Net cash used in investing activities for the three months ended March 31,
1995 was $17,800,000, including the acquisition of 6110 Executive Boulevard for
$16,500,000 and capital improvements to the Trust's properties of $2,700,000,
less $1,400,000 provided by the maturity and or sale of marketable securities.
Financing activities provided $16,000,000 from borrowings under the Trust's
lines of credit.
 
     Management believes that it has the liquidity and the access to capital
necessary to meet all of its known obligations and to make additional property
acquisitions when appropriate. WRIT continues to pursue acquisition
opportunities and capital improvement projects to enhance long-term growth.
 
                                       18
<PAGE>   20
 
                                   MANAGEMENT
 
     The Trustees and executive officers of the Trust are:
 
<TABLE>
<CAPTION>
                  NAME                       AGE                     POSITION
- -----------------------------------------    ---     -----------------------------------------
<S>                                          <C>     <C>
Arthur A. Birney.........................     67     Trustee and Chairman of the Board
Edmund B. Cronin, Jr. ...................     58     Trustee, President and Chief Executive
                                                     Officer
Mary Beth Avedesian......................     35     Vice President -- Investments
William N. Cafritz.......................     69     Trustee (President, William Cafritz
                                                       Development Corp., a real estate
                                                       development company)
Benjamin H. Dorsey.......................     71     Trustee, Secretary and General Counsel
Larry E. Finger..........................     42     Senior Vice President and Chief Financial
                                                       Officer
Laura M. Franklin........................     34     Vice President and Chief Accounting
                                                     Officer
Sandra T. Hunt...........................     43     Vice President -- Leasing
B. Franklin Kahn.........................     70     Trustee and Chairman Emeritus (President,
                                                       Benjamin Franklin Corporation)
David M. Osnos...........................     63     Trustee (Senior partner, Arent Fox
                                                     Kintner Plotkin & Kahn (legal counsel to
                                                       the Trust); Director, VSE Corporation,
                                                       an engineering company; Director,
                                                       EastGroup Properties, a real estate
                                                       company)
Kenneth C. Reed..........................     42     Vice President -- Property Management
Thomas L. Regnell........................     38     Vice President -- Acquisitions
Stanley P. Snyder........................     60     Trustee (Chairman, Snyder, Kamerow &
                                                       Associates, P.C., Certified Public
                                                       Accountants)
</TABLE>
 
     Mr. Arthur A. Birney, a founding Trustee, is Managing Partner and Chief
Executive Officer of Washington Brick & Terra Cotta Company, a real estate
investment and holding company founded in 1892, and President of Port Annapolis
Marina, Inc.
 
     Mr. Edmund B. Cronin, Jr. has 35 years of real estate investment,
operations and finance experience in the Washington-Baltimore metropolitan
market. From 1977 to 1993, he served as Chairman and Chief Executive Officer of
Smithy Braedon, a full service commercial real estate firm providing leasing,
sales, asset management, finance, consulting, investment advisory and
development services. From 1993 until joining WRIT in June 1994, Mr. Cronin was
Chief Executive Officer of H.G. Smithy Company, a real estate management and
investment advisory service company whose debt and equity assets under
management total approximately $1.5 billion.
 
     Ms. Mary Beth Avedesian joined the Trust as Vice President -- Investments
in March 1995. Ms. Avedesian was an Assistant Vice President for Towle Financial
Services from 1993 to 1995, where she was responsible for acquisition due
diligence and asset management. From 1991 to 1993, Ms. Avedesian was a Marketing
Manager for AMRESCO, a subsidiary of NationsBank formed to dispose of bank-owned
property; and from 1987 to 1991 Ms. Avedesian was a Financial Analyst and
Development Coordinator with Himmel and Company on the $350 million Reston Town
Center.
 
     Mr. Benjamin H. Dorsey, a co-founder of the Trust, has held the position of
Secretary and General Counsel since 1960.
 
     Mr. Larry E. Finger, an attorney and CPA, joined the Trust as Vice
President and Chief Financial Officer in December 1993 and was promoted to
Senior Vice President and Chief Financial Officer in June 1995. Mr. Finger
previously served as Chief Operating Officer of Savage/Fogarty Companies, Inc.,
a real estate
 
                                       19
<PAGE>   21
 
investment, management and development company based in Alexandria, Virginia.
Mr. Finger was employed by Savage/Fogarty for 13 years, from 1978 to 1991
serving four years in the accounting division, ultimately as Vice
President -- Finance, seven years as Senior Vice President and General Counsel
then Executive Vice President and General Counsel, and finally two years as
Chief Operating Officer. During 1992 and until he joined the Trust, Mr. Finger
created and operated a multi-restaurant delivery business in Richmond, Virginia.
 
     Ms. Laura M. Franklin, a CPA, joined the Trust as Assistant Vice
President -- Finance in August 1993 and was promoted to Vice President and Chief
Accounting Officer in June 1995. From 1985 to 1993, Ms. Franklin was an
associate with Reznick, Fedder and Silverman, P.C., a regional public accounting
firm known nationally to the real estate industry. While at Reznick, Ms.
Franklin provided audit and tax services to clients.
 
     Ms. Sandra T. Hunt has held the position of Vice President -- Leasing since
1984.
 
     Mr. Kenneth C. Reed, Vice President -- Property Management, is President of
CSN Management, Inc., which manages the Trust's properties. Mr. Reed has been
with CSN Management since 1983 and has held the position of President since
1991.
 
     Mr. Thomas L. Regnell joined the Trust as Vice President -- Acquisitions in
January 1995. Mr. Regnell previously served as an Investment Officer with
Federal Realty Investment Trust in Bethesda, Maryland. Mr. Regnell was employed
by Federal Realty from 1992 to 1995, and was responsible for Federal Realty's
real estate acquisitions in the Midwest and Southeast United States. Prior to
joining Federal Realty, Mr. Regnell was a Vice President with Spaulding & Slye
Company, a real estate development, brokerage and management company in
Bethesda, Maryland.
 
                                     SHARES
 
     The Trust is authorized to issue an unlimited number of Shares. The Shares
do not have preference, conversion, exchange, preemptive, cumulative voting or
redemption rights. Holders of Shares are entitled to one vote per Share, to
participate pro rata in distributions as may be declared by the Trustees and,
upon liquidation of the Trust, to receive their pro rata share of the assets
after payment of liabilities and expenses of the Trust. All of the Trust's
outstanding Shares are, and the Shares offered hereby will be, when issued
against full payment of the agreed purchase price, validly issued, fully paid
and, subject to the matters set forth below, non-assessable.
 
     The Shares are not redeemable at the option of the Trust except (i) to the
extent that would be necessary to maintain the Trust's "real estate investment
trust" tax status under the Internal Revenue Code of 1986, as amended (the
"Code"), or (ii) where necessary to prevent any person or entity from owning
more than 10% of the Shares. The Trust's Declaration of Trust provides that any
merger, consolidation or liquidation of the Trust, or any sale of all or
substantially all of its assets, must be approved by a majority of the Trustees,
and that if any such transaction is with, into or to a Related Shareholder (a
person or entity beneficially owning, directly or indirectly, 5% or more of the
outstanding Shares), the transaction must be approved by a majority of the
Trustees not appointed or nominated by or acting on behalf of the Related
Shareholder or an affiliate or associate of the Related Shareholder. The
Declaration of Trust also establishes the number of Trustees at not less than
three nor more than seven and divides the Trustees into three classes to be
elected on a staggered basis. The provisions referred to in this paragraph may
be amended only by the affirmative vote of the holders of 70% or more of the
outstanding Shares. The Declaration of Trust may otherwise be amended by a vote
of the holders of a majority of the outstanding Shares. Shareholders may remove
any Trustee by the affirmative vote of the holders of two-thirds of the
outstanding Shares at a meeting called for such purpose.
 
     The Declaration of Trust provides that no shareholder shall be personally
liable in connection with the Trust's property or the affairs of the Trust. The
Declaration of Trust further provides that the Trust shall indemnify and hold
harmless shareholders against all claims and liabilities and related reasonable
expenses to which they become subject by reason of their being or having been
shareholders. In addition, the Trust as a matter of practice inserts a clause in
its business, management and other contracts which provides that shareholders
shall not be personally liable thereunder. Benjamin H. Dorsey, Esquire, General
Counsel for the
 
                                       20
<PAGE>   22
 
Trust, is of the opinion that under the laws of the District of Columbia and
most other jurisdictions, no personal liability will attach to the Trust's
shareholders for contract claims under any contract containing such a clause
where adequate notice is given. However, in respect to tort claims and contract
claims where shareholder liability is not so negated, claims for taxes and
certain statutory liabilities, the shareholders may, in some jurisdictions, be
personally liable to the extent that such claims are not satisfied by the Trust.
The Trust carries public liability insurance which the Trustees consider
adequate. Thus, any risk of personal liability to shareholders is limited to
situations in which the Trust's assets, plus its insurance coverage, would be
insufficient to satisfy the claims against the Trust and its shareholders or the
Trust's assets were insufficient to satisfy such claims and the Trust's
insurance did not cover them.
 
     Outstanding Shares are listed on the American Stock Exchange and
application has been made to list the additional Shares that are being offered
hereby by the Trust. American Stock Transfer & Trust Company, New York, New York
is the transfer agent for the Trust's Shares.
 
TAXATION
 
     The Trust has elected to be taxed as a real estate investment trust under
the Code. Real estate investment trusts which meet certain qualifications are
relieved of federal income taxes on ordinary income and capital gains
distributed to shareholders. In the opinion of Arent Fox Kintner Plotkin & Kahn,
legal counsel for WRIT, the Trust has qualified as a real estate investment
trust for the years 1978-1994 and its present and contemplated method of
operation will put it in a position to continue to so qualify. David M. Osnos, a
Trustee, is a partner of such firm.
 
                                       21
<PAGE>   23
 
                                  UNDERWRITING
 
     Subject to the terms and conditions set forth in a Purchase Agreement (the
"Purchase Agreement"), the Trust has agreed to sell to each of the Underwriters
named below, and each of the Underwriters, for whom Merrill Lynch, Pierce,
Fenner & Smith Incorporated, Alex. Brown & Sons Incorporated, A.G. Edwards &
Sons, Inc. and Legg Mason Wood Walker, Incorporated are acting as
representatives (the "Representatives"), has severally agreed to purchase from
the Trust, the number of Shares set forth below opposite their respective names.
The Underwriters are committed to purchase all of such Shares if any are
purchased. Under certain circumstances, the commitments of non-defaulting
Underwriters may be increased as set forth in the Purchase Agreement.
 
<TABLE>
<CAPTION>
                                                                                 NUMBER
                                         UNDERWRITER                            OF SHARES
                                                                                ---------
    <S>                                                                         <C>
    Merrill Lynch, Pierce, Fenner & Smith
                 Incorporated................................................
    Alex. Brown & Sons Incorporated..........................................
    A.G. Edwards & Sons, Inc.................................................
    Legg Mason Wood Walker, Incorporated.....................................
 
                                                                                ---------
                 Total.......................................................   3,500,000
                                                                                 ========
</TABLE>
 
     The Representatives have advised the Trust that the Underwriters propose
initially to offer the Shares to the public at the public offering price set
forth on the cover of this Prospectus, and to certain dealers at such price less
a concession not in excess of $.       per Share. The Underwriters may allow,
and such dealers may reallow, a discount not in excess of $.       per Share on
sales to certain other dealers. After the initial public offering, the public
offering price, concession and discount may be changed.
 
     The Trust has granted to the Underwriters an option exercisable within 30
days after the date hereof to purchase up to 525,000 additional Shares to cover
over-allotments, if any, at the initial public offering price less the
underwriting discount set forth on the cover page of this Prospectus. If the
Underwriters exercise this option, each of the Underwriters will have a firm
commitment, subject to certain conditions, to purchase approximately the same
percentage thereof that the number of Shares to be purchased by it shown in the
foregoing table is of the 3,500,000 Shares initially offered hereby.
 
     The Trust has agreed to indemnify the several Underwriters against certain
liabilities, including liabilities under the Securities Act of 1933, as amended.
 
     The Trust and its officers and Trustees have agreed that for a period of 90
days from the date of this Prospectus they will not, without the prior written
consent of the Representatives, offer, sell, grant any option for the sale of or
otherwise dispose of any Shares, except for grants of options or issuances of
Shares upon exercise of options pursuant to the Trust's Incentive Share Option
Plan and the Trust's Dividend Reinvestment Plan.
 
                                       22
<PAGE>   24
 
                                    EXPERTS
 
     The financial statements incorporated in this Prospectus by reference to
the Trust's Annual Report on Form 10-K for the year ended December 31, 1994 have
been so incorporated in reliance on the report of Price Waterhouse LLP,
independent accountants, given on the authority of said firm as experts in
auditing and accounting.
 
                                 LEGAL OPINIONS
 
     Arent Fox Kintner Plotkin & Kahn, Washington, D.C., legal counsel to the
Trust, has delivered an opinion to the effect that the Shares offered hereby are
legally issued, fully paid, free of preemptive rights and, subject to the
matters discussed under the caption "Shares," non-assessable, and have passed on
certain tax matters relating to the qualification of the Trust as a real estate
investment trust. Certain legal matters with respect to the Shares offered
hereby will be passed on for the Underwriters by Brown & Wood, New York, New
York.
 
                             AVAILABLE INFORMATION
 
     The Trust is subject to the information requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports and other information with the Securities and Exchange
Commission (the "Commission"). Reports, proxy statements and other information
filed by the Trust can be inspected and copied at the public reference
facilities maintained by the Commission at 450 Fifth Street, N.W., Washington,
D.C. 20549 and at the Commission's Regional Offices at 7 World Trade Center, New
York, New York 10048 and 500 West Madison Street, Suite 1400, Chicago, Illinois
60661, and copies of such material can be obtained at prescribed rates from the
Public Reference Section of the Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549. The Trust's Shares are listed on the American Stock
Exchange, 86 Trinity Place, New York, New York 10005 and reports, proxy
statements and other information filed by the Trust can be inspected at such
Exchange. The Trust has filed a Registration Statement on Form S-3 (together
with all amendments and exhibits thereto, the "Registration Statement") under
the Securities Act of 1933, as amended. This Prospectus does not contain all the
information set forth in the Registration Statement, certain parts of which are
omitted in accordance with the rules and regulations of the Commission. For
further information, reference is made to the Registration Statement.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
     The Trust hereby incorporates by reference the following documents filed
with the Commission pursuant to the Exchange Act: the Annual Report of the Trust
on Form 10-K for the year ended December 31, 1994 and the Quarterly Report of
the Trust on Form 10-Q for the quarter ended March 31, 1995. Any statement
contained in a document incorporated or deemed to be incorporated by reference
herein shall be deemed to be modified or superseded for purposes of this
Prospectus to the extent that a statement contained herein, or in any other
subsequently filed document which also is or is deemed to be incorporated by
reference herein, modifies or supersedes such statement. Any statement so
modified or superseded shall not be deemed, except as so modified or superseded,
to constitute a part of this Prospectus.
 
     All documents filed by the Trust pursuant to Section 13(a), 13(c), 14 or
15(d) of the Exchange Act subsequent to the date of this Prospectus and prior to
the termination of this offering shall be deemed to be incorporated by reference
into this Prospectus and to be a part hereof from the date of filing such
documents.
 
     Copies of all documents incorporated by reference, other than exhibits to
such documents not specifically incorporated by reference therein, will be
provided without charge to each person who receives a copy of this Prospectus on
the written or oral request of such person directed to Larry E. Finger,
Washington Real Estate Investment Trust, 10400 Connecticut Avenue, Kensington,
Maryland 20895, telephone (301) 929-5900 or (800) 565-9748.
 
                                       23
<PAGE>   25
 
- ------------------------------------------------------
- ------------------------------------------------------
 
  NO DEALER, SALESMAN OR OTHER INDIVIDUAL HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS IN
CONNECTION WITH THE OFFERING COVERED BY THIS PROSPECTUS. IF GIVEN OR MADE, SUCH
INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED
BY THE TRUST OR THE UNDERWRITERS. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER
TO SELL, OR A SOLICITATION OF AN OFFER TO BUY, THE SHARES IN ANY JURISDICTION
WHERE, OR TO ANY PERSON TO WHOM, IT IS UNLAWFUL TO MAKE SUCH OFFER OR
SOLICITATION. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE
HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE AN IMPLICATION THAT THERE HAS
BEEN NO CHANGE IN THE FACTS SET FORTH IN THIS PROSPECTUS OR IN THE AFFAIRS OF
THE TRUST SINCE THE DATE HEREOF.
 
                            ------------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                         PAGE
                                         ---
<S>                                      <C>
Prospectus Summary....................     3
The Trust.............................     5
Use of Proceeds.......................     8
Capitalization........................     8
Dividends.............................     9
Dividend Reinvestment Plan............     9
Investments of the Trust..............    11
Description of Real Estate
  Investments.........................    12
Selected Financial Data...............    15
Management's Discussion and Analysis
  of Financial Condition and Results
  of Operations.......................    16
Management............................    19
Shares................................    20
Underwriting..........................    22
Experts...............................    23
Legal Opinions........................    23
Available Information.................    23
Documents Incorporated by Reference...    23
</TABLE>
 
                                   [WRIT LOGO]

                                   WASHINGTON
                                  REAL ESTATE
                                INVESTMENT TRUST


                              3,500,000 SHARES OF
                              BENEFICIAL INTEREST


                          ---------------------------
 
                                   PROSPECTUS

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


                              MERRILL LYNCH & CO.
 
                               ALEX. BROWN & SONS
                                  INCORPORATED
 
                           A.G. EDWARDS & SONS, INC.
 
                             LEGG MASON WOOD WALKER
                                  INCORPORATED
 
                                 JULY   , 1995
 
- ------------------------------------------------------
- ------------------------------------------------------
<PAGE>   26
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
     The following table sets forth the expenses in connection with the issuance
and distribution of the securities being registered, other than underwriting
discounts and commissions:
 
<TABLE>
    <S>                                                                         <C>
    Registration fee -- Securities and Exchange Commission....................  $ 21,687
    Filing fee -- NASD........................................................     6,790
    American Stock Exchange Listing Fee.......................................    17,500
    *Blue Sky fees and expenses (including legal fees)........................    15,000
    *Accounting fees and expenses.............................................    35,000
    *Legal fees and expenses..................................................    47,500
    *Printing and engraving...................................................    46,000
    *Transfer agent and registrar fees........................................     3,500
    *Miscellaneous............................................................    17,023
                                                                                --------
              Total...........................................................  $210,000
                                                                                ========
</TABLE>
 
- ---------------
* Estimated.
 
ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
     The Amendment to the Trust's Declaration of Trust dated June 24, 1987
provides that no Trustee or officer of the Trust shall be personally liable, in
tort, contract or otherwise, in connection with Trust property or the affairs of
the Trust, or on account of his own acts or omissions to the Trust, or to any
shareholder, Trustee, officer or agent thereof except for (i) any breach of the
duty of loyalty of the Trustee or officer to the Trust or its shareholders, (ii)
acts or omissions not in good faith or which involve intentional misconduct or a
knowing violation of law, or (iii) any transaction from which the Trustee or
officer derived any improper personal benefit. All persons shall look solely to
the Trust property for satisfaction of claims of any nature in connection with
the affairs of the Trust.
 
     The form of Purchase Agreement included in Exhibit 1 to this Registration
Statement provides for indemnification of the Trustees and officers against
certain liabilities, including liabilities under the Securities Act of 1933.
 
ITEM 16. EXHIBITS.
 
<TABLE>
<S>     <C>     
 1.       -- Form of Purchase Agreement.
 5.       -- Opinion of Arent Fox Kintner Plotkin & Kahn.
 8.       -- Tax opinion of Arent Fox Kintner Plotkin & Kahn (included in Exhibit 5).
23.       -- Consents of experts and counsel.
   (a)    -- Arent Fox Kintner Plotkin & Kahn (counsel) (included in Exhibit 5).
   (b)    -- Price Waterhouse LLP (independent accountants).
</TABLE>
 
ITEM 17. UNDERTAKINGS.
 
     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to Trustees, officers, and controlling persons of the
Registrant pursuant to the Registrant's Declaration of Trust or otherwise, the
Registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred or paid by a Trustee, officer, or controlling person of the Registrant
in the successful defense of any action, suit or proceeding) is asserted by such
Trustee, officer, or controlling person in connection with
 
                                      II-1
<PAGE>   27
 
the securities being registered, the Registrant will, unless in the opinion of
its counsel the matter has been settled by controlling precedent, submit to a
court of appropriate jurisdiction the question of whether such indemnification
by it is against public policy as expressed in the Act and will be governed by
the final adjudication of such issue.
 
     The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, (i) each filing of
the Registrant's annual report pursuant to section 13(a) or section 15(d) of the
Securities Exchange Act of 1934 that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof; (ii)
the information omitted from the form of prospectus filed as part of this
registration statement in reliance upon Rule 430A and contained in a form of
prospectus filed by the Registrant pursuant to Rule 424(b)(1) or (4) or 497(h)
under the Securities Act shall be deemed to be part of this registration
statement as of the time it was declared effective; and (iii) each
post-effective amendment that contains a form of prospectus shall be deemed to
be a new registration statement relating to the securities offered therein, and
the offering of such securities at that time shall be deemed to be the initial
bona fide offering thereof.
 
                                      II-2
<PAGE>   28
 
                                   SIGNATURES
 
     Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized in the City of Bethesda, State of Maryland on the 26th day of June,
1995.
 
                                          WASHINGTON REAL ESTATE INVESTMENT
                                          TRUST
 
                                          By: /s/  EDMUND B. CRONIN, JR.
                                            ------------------------------------
                                            Edmund B. Cronin, Jr., President and
                                            Chief Executive Officer
 
                               POWER OF ATTORNEY
 
     Each person whose signature appears below constitutes and appoints each of
Edmund B. Cronin, Jr. and Benjamin H. Dorsey as such person's true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for such person and in such person's name, place and stead, in any and all
capacities, to sign any and all amendments to this Registration Statement, and
to file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorney-in-fact and agent full power and authority to do and perform each and
every act and thing requisite and necessary to be done, as fully to all intents
and purposes as such person might or could do in person, hereby ratifying and
confirming all that said attorney-in-fact and agent, or a substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.
 
     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.
 
<TABLE>
<CAPTION>
                SIGNATURE                                 TITLE                      DATE
- ------------------------------------------    ------------------------------    --------------
 
<S>                                           <C>                               <C>
/s/  ARTHUR A. BIRNEY                         Chairman of the Trustees          June 26, 1995
- ------------------------------------------
Arthur A. Birney
 
/s/  WILLIAM N. CAFRITZ                       Trustee                           June 26, 1995
- ------------------------------------------
William N. Cafritz

/s/  EDMUND B. CRONIN, JR.                    Trustee, President and            June 26, 1995
- ------------------------------------------    Chief Executive Officer
Edmund B. Cronin, Jr.
 
/s/  BENJAMIN H. DORSEY                       Trustee                           June 26, 1995
- ------------------------------------------
Benjamin H. Dorsey
 
/s/  LARRY E. FINGER                          Senior Vice President and         June 26, 1995
- ------------------------------------------    Chief Financial Officer
Larry E. Finger                               (Principal Accounting Officer)
 
/s/  B. FRANKLIN KAHN                         Trustee                           June 26, 1995
- ------------------------------------------
B. Franklin Kahn
</TABLE>
 
                                      II-3
<PAGE>   29
 
<TABLE>
<CAPTION>
                SIGNATURE                                 TITLE                      DATE
- ------------------------------------------    ------------------------------    --------------
 
<S>                                           <C>                               <C>
/s/  DAVID M. OSNOS                           Trustee                           June 26, 1995
- ------------------------------------------
David M. Osnos
 
/s/  STANLEY P. SNYDER                        Trustee                           June 26, 1995
- ------------------------------------------
Stanley P. Snyder
</TABLE>
 
                                      II-4

<PAGE>   1

                                3,500,000 Shares
                    WASHINGTON REAL ESTATE INVESTMENT TRUST
                    (a District of Columbia business trust)

                         Shares of Beneficial Interest

                                 (No Par Value)

                               PURCHASE AGREEMENT


                                                                   July __, 1995

MERRILL LYNCH & CO.
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
ALEX. BROWN & SONS INCORPORATED
A.G. EDWARDS & SONS, INC.
LEGG MASON WOOD WALKER, INCORPORATED
As Representatives of the several Underwriters
c/o Merrill Lynch & Co.
    Merrill Lynch, Pierce, Fenner & Smith
                Incorporated
    Merrill Lynch World Headquarters
    North Tower
    World Financial Center
    New York, New York 10281-1305

Dear Sirs:

         Washington Real Estate Investment Trust, a real estate investment
trust organized under the laws of the District of Columbia (the "Company"),
confirms its agreement with Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner
& Smith Incorporated ("Merrill Lynch"), Alex. Brown & Sons Incorporated ("Alex.
Brown"), A.G. Edwards & Sons, Inc. ("A.G. Edwards") and Legg Mason Wood Walker,
Incorporated ("Legg Mason") and each of the other Underwriters named in 
Schedule A hereto (collectively, the "Underwriters", which term shall also 
include any underwriter substituted as hereinafter provided in Section 10), 
for whom Merrill Lynch, Alex. Brown, A.G. Edwards and Legg Mason are acting as
representatives (in such capacity, Merrill Lynch, Alex. Brown, A.G. Edwards 
and Legg Mason shall hereinafter be referred to as the "Representatives"), with
respect to the sale by the Company and the purchase by the Underwriters, acting
severally and not jointly, of the respective numbers of shares of beneficial
interest, no par value, of the Company (the "Shares of Beneficial Interest")
set forth in said Schedule A, and with respect to the grant by the Company to
the Underwriters of the





<PAGE>   2
option described in Section 2 hereof to purchase all or any part of an
additional 525,000 shares to cover over-allotments.  The aforesaid 3,500,000
shares (the "Initial Shares"), together with all or any part of the 525,000
shares subject to the option described in Section 2 hereof (the "Option
Shares"), are collectively hereinafter called the "Shares".

         Prior to the purchase and public offering of the Shares by the several
Underwriters, the Company and the Representatives, acting on behalf of the
several Underwriters, shall enter into an agreement substantially in the form
of Exhibit A hereto (the "Pricing Agreement").  The Pricing Agreement may take
the form of an exchange of any standard form of written telecommunication
between the Company and the Representatives and shall specify such applicable
information as is indicated in Exhibit A hereto.  The offering of the Shares
will be governed by this Agreement, as supplemented by the Pricing Agreement.
From and after the date of the execution and delivery of the Pricing Agreement,
this Agreement shall be deemed to incorporate the Pricing Agreement.

         The Company has filed with the Securities and Exchange Commission (the
"Commission") a registration statement on Form S-3 (No. 33-_____) and a related
preliminary prospectus for the registration of the Shares under the Securities
Act of 1933, as amended (the "1933 Act"), has filed such amendments thereto, if
any, and such amended preliminary prospectuses as may have been required to the
date hereof.  Such registration statement (as amended, if applicable) and the
prospectus constituting a part thereof (including in each case all documents
incorporated or deemed to be incorporated by reference therein and the
information, if any, deemed to be a part thereof pursuant to Rule 430A(b) or
Rule 434 of the rules and regulations under the 1933 Act (the "1933 Act
Regulations")), as from time to time amended or supplemented pursuant to the
1933 Act, the Securities Exchange Act of 1934, as amended (the "1934 Act"), or
otherwise, are hereinafter referred to as the "Registration Statement" and the
"Prospectus", respectively, except that if any revised prospectus shall be
provided to the Underwriters by the Company for use in connection with the
offering of the Shares which differs from the Prospectus on file at the
Commission at the time the Registration Statement becomes effective (whether or
not such revised prospectus is required to be filed by the Company pursuant to
Rule 424(b) of the 1933 Act Regulations), the term "Prospectus" shall refer to
such revised prospectus from and after the time it is first provided to the
Underwriters for such use.  All references in this Agreement to financial
statements and schedules and other information which is "contained," "included"
or "stated" in the Registration Statement or the Prospectus (and all other
references of like import) shall be deemed to mean and include all such
financial statements and schedules and other





                                       2
<PAGE>   3
information which is or is deemed to be incorporated by reference in the
Registration Statement or the Prospectus, as the case may be; and all
references in this Agreement to amendments or supplements to the Registration
Statement or the Prospectus shall be deemed to mean and include the filing of
any document under the 1934 Act which is or is deemed to be incorporated by
reference in the Registration Statement or the Prospectus, as the case may be.
If the Company elects to rely on Rule 434 under 1933 Act Regulations, all
references to the Prospectus shall be deemed to include, without limitation,
the form of prospectus and the abbreviated term sheet, taken together, provided
to the Underwriters by the Company in reliance on Rule 434 under the 1933 Act
(the "Rule 434 Prospectus").  If the Company files a registration statement to
register a portion of the Shares and relies on Rule 462(b) for such
registration statement to become effective upon filing with the Commission (the
"Rule 462 Registration Statement"), then any reference to "Registration
Statement" herein shall be deemed to be to both the registration statement
referred to above (No. 33-____) and the Rule 462 Registration Statement, as
each such registration statement may be amended pursuant to the 1933 Act.

         The Company understands that the Underwriters propose to make a public
offering of the Shares as soon as the Representatives deem advisable after the
Registration Statement becomes effective and the Pricing Agreement has been
executed and delivered.

         Section 1.  Representations and Warranties.

         (a)  The Company represents and warrants to each Underwriter as of the
date hereof, as of the date of the Pricing Agreement (such latter date being
hereinafter referred to as the "Representation Date") and as of the Closing
Time referred to in Section 2(a) hereof, and agrees with each Underwriter as
follows:

                 (i)  At the time the Registration Statement and any amendments
         thereto become effective and at the Representation Date, the
         Registration Statement will comply in all material respects with the
         requirements of the 1933 Act and the 1933 Act Regulations and will not
         contain an untrue statement of a material fact or omit to state a
         material fact required to be stated therein or necessary to make the
         statements therein not misleading.  The Prospectus, at the
         Representation Date (unless the term "Prospectus" refers to a
         prospectus which has been provided to the Underwriters by the Company
         for use in connection with the offering of the Shares which differs
         from the Prospectus on file at the Commission at the time the
         Registration Statement first becomes effective, in which case at the
         time





                                       3
<PAGE>   4
         it is first provided to the Underwriters for such use) and at Closing
         Time, will not contain an untrue statement of a material fact or omit
         to state a material fact necessary in order to make the statements
         therein, in the light of the circumstances under which they were made,
         not misleading; provided, however, that the representations and
         warranties in this subsection shall not apply to that part of the
         Registration Statement or Prospectus made in reliance upon and in
         conformity with information furnished to the Company in writing by any
         Underwriter through the Representatives expressly for use in the
         Registration Statement or Prospectus.

             (ii)  The documents incorporated or deemed to be incorporated by
         reference into the Prospectus, at the time they were or hereafter are
         filed with the Commission, complied and will comply in all material
         respects with the requirements of the 1934 Act and the rules and
         regulations of the Commission thereunder (the "1934 Act Regulations"),
         and, when read together with the other information in the Prospectus,
         at the time the Registration Statement and any post-effective
         amendments thereto become effective and at  Closing Time, will not
         contain an untrue statement of a material fact or omit to state a
         material fact required to  be stated therein or necessary to make the
         statements therein not misleading.

            (iii)  The Company has been duly organized and is validly existing
         as a real estate investment trust of unlimited duration with
         transferable shares of beneficial interest in good standing under the
         laws of the District of Columbia, with full power and authority to
         own, lease and operate its properties and conduct its business as
         described in the Prospectus and to enter into and perform its
         obligations under this Agreement and the Pricing Agreement; the
         Company has no subsidiaries; and the Company is duly qualified to
         transact business in all jurisdictions in which the conduct of its
         business or the ownership or leasing of property requires such
         qualification.

             (iv)  The outstanding Shares of Beneficial Interest of the Company
         have been duly authorized and validly issued and are fully paid and,
         except as described in the Prospectus under the caption "Shares,"
         non-assessable; the Shares have been duly authorized for issuance and
         sale to the Underwriters pursuant to this Agreement and, when issued
         and delivered by the Company pursuant to this Agreement against
         payment of the consideration set forth in the Pricing Agreement, will
         be validly issued, fully paid and, except as described in the
         Prospectus under the caption "Shares,"





                                       4
<PAGE>   5
         non-assessable; and no preemptive rights of shareholders exist with
         respect to any of the Shares or the issue and sale thereof.

             (v)  The capitalization of the Company is as set forth in the
         Prospectus; the Shares conform with the statements concerning them in
         the Prospectus.

             (vi)  The financial statements of the Company together with
         related notes and schedules as set forth or incorporated by reference
         in the Registration Statement present fairly the financial position
         and the results of operations of the Company at the indicated dates
         and for the indicated periods.  Such financial statements have been
         prepared in accordance with generally accepted accounting principles, 
         consistently applied throughout the periods involved, and all
         adjustments necessary for a fair presentation of results for such
         periods have been made.  The summary financial and statistical data
         included in the Prospectus present fairly the information shown
         therein and have been compiled on a basis consistent with the
         financial statements presented therein.

            (vii)  There is no action, suit or proceeding before or by any
         court or governmental agency or body, domestic or foreign, now
         pending, or, to the knowledge of the Company, threatened, against or
         affecting the Company, which is required to be disclosed in the
         Registration Statement (other than as disclosed therein), or which
         might reasonably be expected to result in any material adverse change
         in the condition, financial or otherwise, or in the earnings, business
         affairs or business prospects of the Company, or which might
         reasonably be expected to materially and adversely affect the
         properties or assets thereof or the consummation of this Agreement and
         the Pricing Agreement or the performance by the Company of its
         obligations hereunder or thereunder; all pending legal or governmental
         proceedings to which the Company is a party or of which any of its
         property or assets is the subject which are not described in the
         Registration Statement, including ordinary routine litigation
         incidental to the business, are, considered in the aggregate, not
         material.

            (viii)  There are no contracts or documents which are required to
         be described in the Registration Statement, the Prospectus or the
         documents incorporated by reference therein or to be filed as exhibits
         thereto by the 1933 Act, the 1933 Act Regulations, the 1934 Act or the
         1934 Act Regulations which have not been so described and filed as
         required.





                                       5
<PAGE>   6
            (ix)  The Company has good and marketable title to, or valid and
         enforceable leasehold estates in, all items of real and personal
         property referred to in the Prospectus as owned or leased by the
         Company, in each case free and clear of all liens, encumbrances,
         claims,  security interests and defects, other than those referred to
         in the Prospectus or which are not material in amount.  Each lease of
         real property by the Company as lessor requiring annual lease payments
         in excess of $100,000 is the legal, valid and binding obligation of
         the lessee in accordance with its terms (except that the remedy of
         specific performance and injunctive and other forms of equitable
         relief may be subject to equitable defenses and to the discretion of
         the court before which any proceeding therefor may be brought and to
         the Bankruptcy Act) and the rents which at present have remained due
         and unpaid for more than 30 days are not payable under leases such
         that, were no further rental payments to be received under such
         leases, the financial condition or results of operations of the
         Company would be materially adversely affected thereby.  The Company
         has no reason to believe that the lessee under any lease (excluding
         leases for which rent payments due for the remainder of such lease are
         less than $500,000) calling for annual lease payments in excess of
         $500,000 is not financially capable of performing its obligations
         thereunder.

             (x)  The Company has filed all Federal, State and foreign income
         tax returns which have been required to be filed and has paid all
         taxes indicated by said returns and all assessments received by it to
         the extent that such taxes have become due.

             (xi)  Since the respective dates as of which information is given
         in the Registration Statement and the Prospectus, except as otherwise
         stated therein, there has not been any material adverse change or any
         development involving a prospective material adverse change in or
         affecting the condition, financial or otherwise, of the Company or the
         earnings, business affairs, management, or business prospects of the
         Company whether or not occurring in the ordinary course of business,
         and there has not been any material transaction entered into by the
         Company, other than transactions in the ordinary course of business
         and changes and transactions contemplated by the Registration
         Statement and Prospectus.  The Company has no material contingent
         obligations which are not disclosed in the Registration Statement and
         the Prospectus, as they may be amended or supplemented.





                                       6
<PAGE>   7
             (xii)  The Company is not in violation of its Declaration or Trust
         or in default under any agreement, lease, contract, indenture or other
         instrument or obligation to which it is a party or by which it or any
         of its properties is bound and which default is of material
         significance in respect of the business or financial condition of the
         Company.  The execution, delivery and performance of this Agreement
         and the Pricing Agreement and the consummation of the transactions
         contemplated herein and therein and compliance by the Company with its
         obligations hereunder and thereunder have been duly authorized by all
         necessary action on the part of the Company and will not conflict with
         or result in a breach of any of the terms or provisions of, or
         constitute a default under, any contract, indenture, mortgage, loan
         agreement, note, lease, deed of trust or other agreement or instrument
         to which the Company is a party, nor will such action result in any
         violation of the provisions of the Declaration of Trust or By-Laws of
         the Company or any order, rule or regulation applicable to the Company
         of any court or of any regulatory body or administrative agency or
         other governmental body having jurisdiction.

            (xiii)  Each approval, consent, order, authorization, designation,
         declaration or filing by or with any regulatory, administrative or
         other governmental body necessary in connection with the execution and
         delivery by the Company of this Agreement and the Pricing Agreement
         and the consummation of the transactions herein and therein
         contemplated (except such additional steps as may be required by the
         National Association of Securities Dealers, Inc. (the "NASD") or may
         be necessary to qualify the Shares for public offering by the
         Underwriters under State securities or Blue Sky laws) has been
         obtained or made and is in full force and effect.

           (xiv)  The Company holds all material licenses, certificates and
         permits from governmental authorities which are necessary to the
         conduct of its business; and the Company has not infringed any
         patents, patent rights, trade names, trademarks or copyrights, which
         infringement is material to the business of the Company.

            (xv)  Price Waterhouse LLP, who have certified the financial
         statements filed with the Commission as part of, or incorporated by
         reference in, the Registration Statement and Prospectus, are
         independent public accountants as required by the 1933 Act and the
         1933 Act Regulations.





                                       7
<PAGE>   8
             (xvi)  With respect to all tax periods regarding which the
         Internal Revenue Service is or will be entitled to assert any claim,
         the Company has met the requirements for qualification as a real
         estate investment trust under Sections 856 through 860 of the Internal
         Revenue Code, as amended, and the Company's present and contemplated
         operations, assets and income continue to meet such requirements; and
         the Company is not an "investment company" or an entity "controlled"
         by an "investment company" as such terms are defined in the Investment
         Company Act of 1940, as amended (the "1940 Act").

            (xvii)  The conditions for use of registration statements on Form
         S-3 set forth in the General Instructions on Form S-3 have been
         satisfied and the Company is entitled to use such form for the
         transaction contemplated herein.

           (xviii)  The Company has complied with, and is and will be in
         compliance with, the provisions of that certain Florida act relating
         to disclosure of doing business with Cuba, codified as Section 517.075
         of the Florida statutes, and the rules and regulations thereunder
         (collectively, the "Cuba Act") or is exempt therefrom.

           (xix)  The Company has no knowledge of (a) the unlawful presence of
         any hazardous substances, hazardous materials, toxic substances or
         waste materials (collectively, "Hazardous Materials") on any of the
         properties owned by it, or of (b) any unlawful spills, releases,
         discharges or disposal of Hazardous Materials that have occurred or
         are presently occurring off such properties as a result of any
         construction on or operation and use of such properties which presence
         or occurrence would materially adversely affect the condition,
         financial or otherwise, or the earnings, business or business
         prospects of the Company.  In connection with the construction on or
         operation and use of the properties owned by the Company, the Company
         represents that, as of the date of this Agreement, it has no knowledge
         of any material failure to comply with all applicable local, state and
         federal environmental laws, regulations, ordinances and administrative
         and judicial orders relating to the generation, recycling, reuse,
         sale, storage, handling, transport and disposal of any Hazardous
         Materials.

         (b)  Any certificate signed by any officer of the Company md delivered
to the Representatives or to counsel for the Underwriters shall be deemed a
representation and warranty by the Company to each Underwriter as to the
matters covered thereby.





                                       8
<PAGE>   9
         Section 2.  Sale and Delivery to Underwriters: Closing.

         (a)  On the basis of the representations and warranties herein
contained and subject to the terms and conditions herein set forth, the Company
agrees to sell to each Underwriter, severally and not jointly, and each
Underwriter agrees to purchase from the Company, at the price per share set
forth in the Pricing Agreement, the number of Initial Shares set forth in
Schedule A opposite the name of such Underwriter (except as otherwise provided
in the Pricing Agreement), plus any additional number of Initial Shares which
such Underwriter may become obligated to purchase pursuant to the provisions of
Section 10 hereof.

                 (1)  If the Company has elected not to rely upon Rule 430A
         under the 1933 Act Regulations, the initial public offering price and
         the purchase price per share to be paid by the several Underwriters
         for the Shares have each been determined and set forth in the Pricing
         Agreement, dated the hate hereof, and an amendment to the Registration
         Statement and the Prospectus will be filed before the Registration
         Statement becomes effective.

                 (2)  If the Company has elected to rely upon Rule 430A under
         the 1933 Act Regulations, the purchase price per share to be paid by
         the several Underwriters for the Shares shall be an amount equal to
         the initial public offering price, less an amount per share to be
         determined by agreement between the Representatives and the Company.
         The initial public offering price per share of the Shares shall be a
         fixed price to be determined by agreement between the Representatives
         and the Company.  The initial public offering price per share of the
         Shares shall not be higher than the last reported sale price (regular
         way) or the last reported asked price, whichever is higher, of the
         Shares of Beneficial Interest on the American Stock Exchange
         immediately prior to determination of the initial public offering
         price.  The initial public offering price and the purchase price, when
         so determined, shall be set forth in the Pricing Agreement.  In the
         event that such prices have not been agreed upon and the Pricing
         Agreement has not been executed and delivered by all parties thereto
         by the close of business on the fourteenth business day following the
         date of this Agreement, this Agreement shall terminate forthwith,
         without liability of any party to any other party, unless otherwise
         agreed to by the Company and the Representatives.

                 (3)  In addition, on the basis of the representations and
         warranties herein contained and subject to the terms and





                                       9
<PAGE>   10
         conditions herein set forth, the Company hereby grants an option to
         the Underwriters, severally and not jointly, to purchase up to an
         additional 525,000 Shares at the price per share set forth in the
         Pricing Agreement.  The option hereby granted will expire 30 days
         after the date the Registration Statement becomes effective and may be
         exercised in whole or in part from time to time only for the purpose
         of covering over-allotments which may be made in connection with the
         offering and distribution of the Initial Shares upon notice by the
         Representatives to the Company setting forth the principal amount of
         Option Shares as to which the several Underwriters are then exercising
         the option and the time, date and place of payment and delivery for
         such Option Shares.  Any such time and date of delivery (a "Date of
         Delivery") shall be determined by the Representatives but shall not be
         later than seven full business days after the exercise of said option,
         nor in any event prior to Closing Time, as hereinafter defined, unless
         otherwise agreed upon by the Representatives and the Company.  If the
         option is exercised as to all or any portion of the Option Shares, the
         Option Shares shall be purchased by the Underwriters, severally and
         not jointly, in proportion to their respective Initial Share
         underwriting obligations as set forth in Schedule A.

         (b)  Payment of the purchase price for and delivery of certificates
for the Initial Shares shall be made at the office of Brown & Wood, One World
Trade Center, New York, New York 10048-0557, or at such other place as shall be
agreed upon by the Representatives and the Company, at 10:00 A.M. on the fourth
business day (unless postponed in accordance with the provisions of Section 10)
following the date the Registration Statement becomes effective (or, if the
Company has elected to rely upon Rule 430A, the fourth business day after
execution of the Pricing Agreement), or such other time not later than ten
business days after such date as shall be agreed upon by the Representatives
and the Company (such time and date of payment and delivery being herein called
"Closing Time").  In addition, in the event that any or all of the Option
Shares are purchased by the Underwriters, payment of the purchase price for and
the delivery of such Option Shares shall be made at the above-mentioned office
of Brown & Wood, or at such other place as shall be mutually agreed upon by the
Representatives and the Company, on each Date of Delivery as specified in the
notice from the Representatives to the Company.  Payment shall be made by
certified or official bank check or checks in New York Clearing House or
similar next day funds payable to the order of the Company against delivery to
the Representatives for the respective accounts of the Underwriters of
certificates for the Shares to be purchased by them.  The certificates for the
Initial Shares and the Option Shares shall





                                       10
<PAGE>   11
be in such authorized denominations and registered in such names as the
Representatives may request in writing at least one business day before Closing
Time or the Date of Delivery, as the case may be.  It is understood that each
Underwriter has authorized the Representatives, for its account, to accept
delivery of, receipt for, and make payment of the purchase price for, the
Shares which it has agreed to purchase.  Merrill Lynch, Alex. Brown, A.G. 
Edwards or Legg Mason, individually and not as representatives of the several
Underwriters, may (but shall not be obligated to) make payment of the purchase
price for the Shares to be purchased by any Underwriter whose check has not
been received by Closing Time, but any such payment shall not relieve such
Underwriter from its obligations hereunder.  The certificates for the Initial
Shares and the Option Shares will be made available for examination and
packaging by the Representatives not later than 3:00 P.M. on the last business
day prior to Closing Time or the Date of Delivery, as the case may be.

         Section 3.  Covenants of the Company.  The Company covenants with each
Underwriter as follows:

         (a)     The Company will notify the Representatives immediately, and
confirm the notice in writing, (i) of the effectiveness of the Registration
Statement and any amendment thereto (including any post-effective amendment),
(ii) of the receipt of any comments from the Commission, (iii) of any request
by the Commission for any amendment to the Registration Statement or any
amendment or supplement to the Prospectus or for additional information, and
(iv) of the issuance by the Commission of any stop order suspending the
effectiveness of the Registration Statement or the initiation of any
proceedings for that purpose.  The Company will make every reasonable effort to
prevent the issuance of any such stop order and, if any stop order is issued,
to obtain the lifting thereof at the earliest possible moment.  If the Company
elects to rely on Rule 434 under the 1933 Act Regulations, the Company will
prepare an "abbreviated term sheet" that complies with the requirements of Rule
434 under the 1933 Act Regulations.  If Company elects not to rely on Rule 434,
the Company will provide the Underwriters with copies of the form of
Prospectus, in such number as the Underwriters may reasonably request, and file
or transmit for filing with the Commission such Prospectus in accordance with
Rule 424(b) of the 1933 Act by the close of business in New York on the
business day immediately succeeding the date of the Pricing Agreement.  If the
Company elects to rely on Rule 434, the Company will provide the Underwriters
with copies of the form of Rule 434 Prospectus, in such number as the
Underwriters may reasonably request, and file or transmit for filing with the
Commission the form of Prospectus complying with Rule 434(c)(2)





                                       11
<PAGE>   12
of the 1933 Act in accordance with Rule 424(b) of the 1933 Act by the close of
business in New York on the business day immediately succeeding the date of the
Pricing Agreement.

         (b)     The Company will give the Representatives notice of its
intention to file or prepare any amendment to the Registration Statement
(including any post-effective amendment) or any amendment or supplement to the
Prospectus, whether pursuant to the 1933 Act, the 1934 Act or otherwise
(including any revised prospectus which the Company proposes for use by the
Underwriters in connection with the offering of the Shares which differs from
the prospectus on file at the Commission at the time the Registration Statement
first becomes effective, whether or not such revised prospectus is required to
be filed pursuant to Rule 424(b) of the 1933 Act Regulations, or any
abbreviated term sheet prepared in reliance on Rule 434 of the 1933 Act
Regulations), will furnish the Representatives with copies of any such
amendment or supplement a reasonable amount of time prior to such proposed
filing or use, as the case may be, and will not file any such amendment or
supplement or use any such prospectus to which the Representatives or counsel
for the Underwriters shall reasonably object.

         (c)     The Company will deliver to the Representatives four signed
copies of the Registration Statement as originally filed and of each amendment
thereto (including exhibits filed therewith or incorporated by reference
therein and documents incorporated by reference into the Prospectus pursuant to
Item 12 of Form S-3 under the 1933 Act) and will also deliver to the
Representatives a conformed copy of the Registration Statement as originally
filed and of each amendment thereto (including documents incorporated by
reference into the Prospectus but without exhibits) for each of the
Underwriters.

         (d)     The Company will deliver to each Underwriter, without charge,
from time to time until the effective date of the Registration Statement (or,
if the Company has elected to rely upon Rule 430A, until such time the Pricing
Agreement is executed and delivered), as many copies of each preliminary
prospectus as such Underwriter may reasonably request, and the Company hereby
consents to the use of such copies for purposes permitted by the 1933 Act.  The
Company will furnish to each Underwriter, from time to time during the period
when the Prospectus is required to be delivered under the 1933 Act or the 1934
Act, such number of copies of the Prospectus (as amended or supplemented) as
such Underwriter may reasonably request for the purposes contemplated by the
1933 Act, the 1933 Act Regulations, the 1934 Act or the 1934 Act Regulations.





                                       12
<PAGE>   13
         (e)     If any event shall occur as a result of which it is necessary,
in the opinion of counsel for the Underwriters, to amend or supplement the
Prospectus in order to make the Prospectus not misleading in the light of the
circumstances existing at the time it is delivered to a purchaser, the Company
will either (i) forthwith prepare and furnish to the Underwriters a reasonable
number of copies of an amendment of or supplement to the Prospectus or (ii)
make an appropriate filing pursuant to Section 13, 14 or 15 of the 1934 Act, in
form and substance satisfactory to counsel for the Underwriters which will
amend or supplement the Prospectus so that it will not contain an untrue
statement of a material fact or omit to state a material fact necessary in
order to make the statements therein, in the light of the circumstances
existing at the time it is delivered to a purchaser, not misleading.

         (f)     If, at the time that the Registration Statement becomes
effective, any information shall have been omitted therefrom in reliance upon
Rule 430A of the 1933 Act Regulations, then immediately following the execution
of the Pricing Agreement, the Company will prepare, and file or transmit for
filing with the Commission in accordance with such Rule 430A and Rule 424(b) of
the 1933 Act Regulations, copies of an amended Prospectus, or, if required by
such Rule 430A, a post-effective amendment to the Registration Statement
(including an amended Prospectus), containing all information so omitted and
will use its best efforts to cause such post-effective amendment to be declared
effective as promptly as practicable.

         (g)     The Company will endeavor, in cooperation with the
Underwriters, to qualify the Shares for offering and sale under the applicable
securities laws and real estate syndication laws of such states and other
jurisdictions of the United States as the Representatives may designate.  In
each jurisdiction in which the Shares have been so qualified the Company will
file such statements and reports as may be required by the laws of such
jurisdiction to continue such qualification in effect for a period of not less
than one year from the effective date of the Registration Statement.

         (h)     The Company will make generally available to its security
holders as soon as practicable, but not later than 60 days after the close of
the period covered thereby, an earnings statement (in form complying with the
provisions of Rule 158 of the 1933 Act Regulations) covering a twelve month
period beginning not later than the first day of the Company's fiscal quarter
next following the "effective date" (as defined in such Rule 158) of the
Registration Statement.





                                       13
<PAGE>   14
         (i)     The Company will use the net proceeds received by it from the
sale of the Shares in the manner specified in the Prospectus under the caption
"Use of Proceeds".

         (j)     The Company will use its best efforts to effect the listing of
the Shares on the American Stock Exchange ("AMEX").

         (k)     The Company will not, during the 90 days following the
effective date of the Registration Statement, except with the prior written
consent of the Representatives, offer for sale, sell or otherwise dispose of
any Shares of Beneficial Interest (except for the issuance of Shares of
Beneficial Interest pursuant to existing grants or options pursuant to the
Company's Incentive Share Option Plan), or sell or grant options, rights or
warrants with respect to any Shares of Beneficial Interest (other than the
grant of options pursuant to the Company's Incentive Share Option Plan),
otherwise than in accordance with this Agreement or as contemplated in the
Prospectus.

         (l)     Except as provided for in the Prospectus, the Company will
cause each officer and trustee of the Company who own Shares of Beneficial
Interest not to offer for sale, sell or otherwise dispose of any Shares of
Beneficial Interest during the 90 days following the effective date of the
Registration Statement, except with the prior written consent of the
Underwriters.

         (m)     The Company will elect to qualify as a "real estate investment
trust" under the Internal Revenue Code of 1986, as amended, and will use its
best efforts to continue to meet the requirements to qualify as a "real estate
investment trust".

         Section 4.  Payment of Expenses.  The Company will pay all expenses
incident to the performance of its obligations under this Agreement, including
(i) the printing and filing of the Registration Statement as originally filed
and of each amendment hereto, (ii) the cost of printing, or reproducing, and
distributing to the Underwriters copies of this Agreement and the Pricing
Agreement, (iii) the preparation, issuance and delivery of the certificates for
the Shares to the Underwriters, (iv) the fees and disbursements of counsel for
the Company, referred to in Section 5(b) hereof, (v) the fees and disbursements
of the Company's accountants, (vi) the qualification of the Shares under
securities law and real estate syndication laws in accordance with the
provisions of Section 3(g), including filing fees and the fee and disbursements
of counsel for the Underwriters in connection therewith and in connection with
the preparation of the Blue Sky Survey, (vii) the printing and delivery to the
underwriters of copies of the Registration Statement as originally filed and of
each amendment thereto, of the preliminary prospectuses, and of the Prospectus
and any





                                       14
<PAGE>   15
amendments or supplements thereto including the abbreviated term sheet
delivered by the Company pursuant to Rule 434 of the 1933 Act Regulations,
(viii) the cost of printing or reproducing and delivering to the Underwriters
copies of the Blue Sky Survey, (ix) the fee of the NASD, (x) the fees and
expenses incurred in connection with the listing of the Shares on the AMEX and
(xi) any transfer taxes imposed on the sale of the Shares to the several
Underwriters.

         If this Agreement is terminated by the Representatives in accordance
with the provisions of Section 5 or Section 9(a)(i), the Company shall
reimburse the Underwriters for all of their out-of-pocket expenses, including
the reasonable fees and disbursements of counsel for the Underwriters.

         Section 5.  Conditions of Underwriters' Obligations.  The obligations
of the Underwriters hereunder are subject to the accuracy of the
representations and warranties of the Company herein contained, to the
performance by the Company of its obligations hereunder, and to the following
further conditions:

         (a)     The Registration Statement shall have become effective not
later than 5:30 P.M. on the date hereof, or, with the consent of the
Representatives, at a later time and date, not later, however, than 5:30 P.M.
on the first business day following the date hereof or at such later time and
date as may be approved by a majority in interest of the Underwriters; and at
Closing Time no stop order suspending the effectiveness of the Registration
Statement shall have been issued under the 1933 Act or proceedings therefor
initiated or threatened by the Commission.  If the Company has elected to rely
upon Rule 430A of the 1933 Act Regulations, the price of the Shares and any
price-related information previously omitted from the effective Registration
Statement pursuant to such Rule 430A shall have been transmitted to the
Commission for filing pursuant to Rule 424(b) of the 1933 Act Regulations
within the prescribed time period, and prior to Closing Time the Company shall
have provided evidence satisfactory to the Representatives of such timely
filing, or a post-effective amendment providing such information shall have
been promptly filed and declared effective in accordance with the requirements
of Rule 430A of the 1933 Act Regulations.

         (b)     At Closing Time the Representatives shall have received:

                 (1)      The favorable opinion, dated as of Closing Time, of
         Arent Fox Kintner Plotkin & Kahn, special counsel for the Company, in
         form and substance satisfactory to counsel for the Underwriters, to
         the effect that:





                                       15
<PAGE>   16
                      (i)  The Company has been duly organized and is
                 validly existing as a real estate investment trust in good
                 standing under the laws of the District of Columbia, with
                 power and authority to own, lease and operate its properties
                 and conduct its business as described in the Prospectus and to
                 enter into and perform its obligations under this Agreement
                 and the Pricing Agreement; and the conditions for use of a
                 registration statement on Form S-3 have been satisfied.

                     (ii)  The Company has authorized and outstanding
                 capital securities as set forth under the caption
                 "Capitalization" in the Prospectus; the authorized Shares of
                 Beneficial Interest of the Company have been duly authorized;
                 the outstanding Shares of Beneficial Interest have been duly
                 authorized and validly issued and are fully paid and, except
                 as set forth in the Prospectus under the caption "Shares,"
                 non-assessable.

                    (iii)  The Shares conform to the description thereof
                 contained in the Prospectus; the certificates for the Shares
                 are in due and proper form; the Shares have been duly
                 authorized by the Company for issuance and sale to the
                 Underwriters pursuant to this Agreement and, when issued and
                 delivered by the Company pursuant to this Agreement against
                 payment of the consideration set forth in the Pricing
                 Agreement, will be validly issued, fully paid and, except as
                 set forth in the Prospectus under the caption "Shares,"
                 non-assessable; and no preemptive rights of shareholders exist
                 with respect to any of the Shares or the issue and sale
                 thereof.

                     (iv)  The Registration Statement has been declared
                 effective under the 1933 Act and, to the best of the knowledge
                 of such counsel, no stop order proceedings with respect
                 thereto have been instituted or are pending or threatened
                 under the 1933 Act.

                      (v)  The Registration Statement, all preliminary
                 prospectuses, the Prospectus and each amendment or supplement
                 thereto and any documents incorporated by reference therein,
                 when they became effective or were filed with the Commission,
                 as the case may be, complied as to form in all material
                 respects with the requirements of the 1933 Act or the 1934
                 Act, as applicable, and the applicable rules and regulations
                 thereunder (except that such counsel need express no opinion
                 as to the financial statements, schedules and other financial
                 information included or incorporated by reference therein);
                 and the Rule 434 Prospectus





                                       16
<PAGE>   17
                 conforms to the requirements of Rule 434 in all material
                 respects.

                     (vi)  The statements under the caption "Shares" in
                 the Prospectus, insofar as such statements constitute a
                 summary of documents referred to therein or matters of law,
                 are accurate summaries and fairly and correctly present the
                 information called for with respect to such documents and
                 matters.

                    (vii)  Such counsel does not know of any contracts
                 or documents required to be filed as exhibits to or
                 incorporated by reference in the Registration Statement or
                 described in the Registration Statement or the Prospectus
                 which are not so filed, incorporated by reference or described
                 as required, and such contracts and documents as are
                 summarized in the Registration Statement or the Prospectus are
                 fairly summarized in all material respects (except that such
                 counsel need express no opinion as to the financial
                 statements, schedules and other financial information included
                 or incorporated by reference therein).

                   (viii)  Such counsel knows of no material legal
                 proceedings pending or threatened against the Company and 
                 all pending legal or governmental proceedings to which the
                 Company is a party or to which any of its property is subject
                 which are not described in the Registration Statement,
                 including ordinary routine litigation incidental to the
                 business, are, considered in the aggregate, not material.

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

                      (x)  No approval, consent, order, authorization,
                 designation, declaration or filing by or with any regulatory,
                 administrative or other governmental body is necessary in
                 connection with the execution and delivery of this Agreement
                 and the Pricing Agreement and the consummation of the
                 transactions herein and therein contemplated by the Company
                 (other than as may be required by the NASD or as required by
                 State securities or Blue Sky laws, as to which such counsel
                 need express no opinion) except such as have been obtained or
                 made, specifying the same.





                                       17
<PAGE>   18
                     (xi)  The investments of the Company described in
                 the Prospectus are permitted investments under the Declaration
                 of Trust.

                    (xii)  The Company has qualified to be taxed as a
                 real estate investment trust pursuant to Sections 856-860 of
                 the Internal Revenue Code, as amended, for the fiscal years
                 ended December 31, 1978 through December 31, 1994, and the
                 Company's present method of operation and its assets and
                 contemplated income are such that the Company is in a position
                 under present law to so qualify for the fiscal year ending
                 December 31, 1995, and under present law the federal income
                 tax treatment of the Company and its shareholders will be as
                 set forth in the Prospectus under the heading "Shares".

                    (xiii) The Company is not an "investment company" or
                 an entity "controlled" by an "investment company" as such
                 terms are defined in the 1940 Act.

                 In rendering such opinion, Arent Fox Kintner Plotkin & Kahn
         may rely as to matters governed by the laws of states other than the
         District of Columbia or Federal laws on local counsel in such
         jurisdictions, provided that in each case Arent Fox Kintner Plotkin &
         Kahn shall state that they believe that they and the Underwriters are
         justified in relying on such other counsel.  In addition to the
         matters set forth above, such opinion shall also include a statement
         to the effect that nothing has come to the attention of such counsel
         which leads them to believe that the Registration Statement, as of the
         time it became effective under the 1933 Act or at the Representation
         Date, contained an untrue statement of a material fact or omitted to
         state a material fact required to be stated therein or necessary to
         make the statements therein not misleading or that the Prospectus at
         the Representation Date (unless the term "Prospectus" refers to a
         prospectus which has been provided to the Underwriters by the Company
         for use in connection with the offering of the Shares which differs
         from the Prospectus on file at the Commission at the time the
         Registration Statement becomes effective, in which case at the date of
         such Prospectus) or at Closing Time, contained or contains an untrue
         statement of a material fact or omitted or omits to state a material
         fact necessary in order to make the statements therein, in the light
         of the circumstances under which they were made, not misleading
         (except that such counsel need express no view as to financial
         statements, schedules and other financial information included or
         incorporated by reference therein).  With respect to such statement,
         Arent Fox Kintner





                                       18
<PAGE>   19
         Plotkin & Kahn may state that their belief is based upon the
         procedures set forth therein, but is without independent check and
         verification.

                 (2)      The favorable opinion, dated as of Closing Time, of
         Benjamin H. Dorsey, Esq., General Counsel and Secretary to the
         Company, in form and substance satisfactory to counsel for the
         Underwriters, to the effect that: (i) the  Company is duly qualified
         to transact business in all jurisdictions in which the conduct of its
         business or ownership or leasing of property requires such
         qualification, or in which the failure to qualify would have a
         materially adverse effect upon the business of the Company; (ii) the
         Company has the authorized and outstanding capital securities as set
         forth under the caption "Capitalization" in the Prospectus: the
         authorized Shares of Beneficial Interest have been validly authorized
         and the outstanding Shares of Beneficial Interest have been duly
         authorized and validly issued and are fully paid and, except as set
         forth in the Prospectus under the caption "Shares," non-assessable;
         (iii) the execution and delivery of this Agreement and the Pricing
         Agreement and the consummation of the transactions contemplated herein
         and therein and compliance by the Company with its obligations
         hereunder and thereunder do not and will not conflict with or result
         in a breach of any of the terms or provisions of, or constitute a
         default under, (a) the Declaration of Trust or By-Laws of the Company,
         (b) any agreement or instrument known to such counsel to which the
         Company is a party or by which the Company may be bound, or (c) any
         order, rule or regulation known to such counsel of any court or
         government agency or body having jurisdiction over the Company or any
         of its properties; and (iv) to the best of such counsel's knowledge,
         the Company is not in violation of its Declaration of Trust or By-Laws
         and the Company is in compliance with all rules, regulations,
         judgements, decrees, orders and statutes in the jurisdictions in which
         it is conducting its business.

                 (3)      The favorable opinion, dated as of Closing Time, of
         Brown & Wood, counsel for the Underwriters, with respect to the
         matters set forth in (iii) to (vi), inclusive, and (ix) and (x) of
         subsection (b)(l) of this Section, except that with respect to the
         matters referred to in (v), no opinion need be expressed as to the
         documents incorporated by reference in the Registration Statement.  In
         addition to the matters set forth above, such opinion shall also
         include a statement to the effect that nothing has come to the
         attention of such counsel which leads them to believe that the
         Registration Statement, as of the time it became





                                       19
<PAGE>   20
         effective under the 1933 Act or at the Representation Date, contained
         an untrue statement of a material fact or omitted to state a material
         fact required to be stated therein or necessary to make the statements
         therein not misleading or that the Prospectus at the Representation
         Date (unless the term "Prospectus" refers to a prospectus which has
         been provided to the Underwriters by the Company for use in connection
         with the offering of the Shares which differs from the Prospectus on
         file at the Commission at the time the Registration Statement becomes
         effective, in which case at the date of such Prospectus) or at Closing
         Time, contained or contains an untrue statement of a material fact or
         omitted or omits to state a material fact necessary in order to make
         the statements therein, in the light of the circumstances under which
         they were made, not misleading (except that such counsel need express
         no view as to financial statements, schedules and other financial
         information included or incorporated by reference therein).  With
         respect to such statement, Brown & Wood may state that their belief
         is based upon the procedures set forth therein, but is without
         independent check and verification.

         (c)     At Closing Time there shall not have been, since the date
hereof or since the respective dates as of which information is given in the
Prospectus, any material adverse change in the condition, financial or
otherwise, of the Company or in its earnings, business affairs or business
prospects, whether or not arising in the ordinary course of business, and the
Representatives shall have received a certificate of the President and Chief
Executive Officer and the Vice President and Chief Financial Officer of the
Company, dated as of Closing Time, to the effect that (i) there has been no
such material adverse change, (ii) the representations and warranties set forth
in Section 1(a) hereof are true and correct with the same force and effect as
though expressly made at and as of Closing Time, (iii) the Company has complied
with all agreements and satisfied all conditions on its part to be performed or
satisfied at or prior to Closing Time and (iv) no stop order suspending the
effectiveness of the Registration Statement has been issued and no proceedings
for that purpose have been initiated or threatened by the Commission.  As used
in this Section 5(c), the term "Prospectus" means the Prospectus in the form
first used to confirm sales of the Shares.

         (d)     At the time of execution of this Agreement, the
Representatives shall have received from Price Waterhouse LLP a letter dated
such date, in form and substance satisfactory to the Representatives, to the
effect that (i) they are independent public accountants with respect to the
Company as required by the 1933 Act and the 1934 Act and the applicable
published rules and





                                       20
<PAGE>   21
regulations thereunder; (ii) it is their opinion that the financial statements
and supporting schedules of the Company included or incorporated by reference
in the Registration Statement and covered by their opinions therein comply as
to form in all material respects with the applicable accounting requirements of
the 1933 Act and the 1934 Act and the related published rules and regulations
thereunder; (iii) based upon limited procedures set forth in detail in such
letter (which shall include, without limitation, the procedures specified by
the American Institute of Certified Public Accountants for a review of interim
financial information as described in SAS No. 71, Interim Financial
Information, with respect to the unaudited condensed financial statements of
the Company included or incorporated by reference in the Registration
Statement), nothing has come to their attention which causes them to believe
that:

                 (A)      any material modifications should be made to the
         unaudited condensed financial statements included or incorporated by
         reference in the Registration Statement for them to be in conformity
         with generally accepted accounting principles;

                 (B)      the unaudited condensed financial statements included
         or incorporated by reference in the Registration Statement do not
         comply as to form in all material respects with the applicable
         accounting requirements of the 1933 Act and the 1934 Act as it applies
         to Form 10-Q and the related published rules and regulations;

                 (C)      at a specified date not more than three days prior to
         the date of such letter, there was any change in the capitalization of
         the Company, any decrease in total assets, any change in long-term
         debt or any change in short-term borrowings of the Company, as
         compared with the amounts shown in the March 31, 1995 balance sheet
         incorporated by reference in the Registration Statement; or

                 (D)      during the period from April 1, 1995 to a specified
         date not more than three days prior to the date of such letter, there
         were any decreases, as compared with the corresponding period in the
         preceding year, in real estate rental revenue, net income or net
         income per share;

except in all cases for changes, increases or decreases which the Registration
Statement discloses have occurred or may occur; (iv) in addition to the limited
procedures referred to in clause (iii) above, they have carried out certain
specified procedures, not constituting an audit, with respect to certain
amounts, percentages and financial information which are derived from the
general accounting records of the Company, which are included or





                                       21
<PAGE>   22
incorporated by reference in the Registration Statement and which are specified
by the Representatives, and have compared such amounts, percentages and
financial information with the accounting records of the Company and have found
them to be in agreement; and (v) they have compared the information in the
Prospectus under the caption "Selected Financial Data" with the disclosure
requirements of Regulation S-K and on the basis of limited procedures specified
in such letter nothing came to their attention as a result of the foregoing
procedures that caused them to believe that this information does not conform
in all material respects with the disclosure requirements of Item 301 of
Regulation S-K.

         (e)     At Closing Time, the Representatives shall have received from
Price Waterhouse LLP a letter dated as of Closing Time to the effect that they
reaffirm the statements made in the letter furnished pursuant to subsection (d)
of this Section, except that the "specified date" referred to shall be a date
not more than three days prior to Closing Time, and, if the Company has elected
to rely on Rule 430A of the 1933 Act Regulations, to the further effect that
they have carried out procedures as specified in clause (iv) of subsection (d)
of this Section with respect to certain amounts, percentages and financial
information deemed to be a part of the Registration Statement pursuant to Rule
430A(b) and have found such amounts, percentages and financial information to
be in agreement with the records specified in such clause (iv).

         (f)     At Closing Time, counsel for the Underwriters shall have been
furnished with such documents and opinions as they may reasonably require for
the purpose of enabling them to pass upon the issuance and sale of the Shares
as herein contemplated and related proceedings, or in order to evidence the
accuracy of any of the representations or warranties, or the fulfillment of any
of the conditions, herein contained; and all proceedings taken by the Company
in connection with the issuance and sale of the Shares as herein contemplated
shall be satisfactory in form and substance to the Representatives and counsel
for the Underwriters.

         (g)     In the event the Underwriters exercise their option provided
in Section 2 hereof to purchase all or any portion of the Option Shares, the
representations and warranties of the Company contained herein and the
statements in any certificates furnished by the Company hereunder shall be true
and correct as of each Date of Delivery, and the Representatives shall have
received:

                 (1)      A certificate of the President and Chief Executive
         Officer and the Vice President and Chief Financial Officer





                                       22
<PAGE>   23
         of the Company, dated such Date of Delivery, confirming that the
         certificate delivered at Closing Time pursuant to Section 5(c) hereof
         remains true as of such Date of Delivery.

                 (2)      The favorable opinion of Arent Fox Kintner Plotkin &
         Kahn, special counsel for the Company, in form and substance
         satisfactory to counsel for the Underwriters, dated such Date of
         Delivery, relating to the Option Shares and otherwise to the same 
         effect as the opinion required by Section 5(b)(1) hereof.

                 (3)      The favorable opinion of Benjamin H. Dorsey, Esq.,
         General Counsel and Secretary to the Company, in form and substance
         satisfactory to counsel for the Underwriters, dated such Date of
         Delivery, relating to the Option Shares and otherwise to the same
         effect as the opinion required by Section 5(b)(2) hereof.

                 (4)      The favorable opinion of Brown & Wood, counsel for
         the Underwriters, dated such Date of Delivery, relating to the Option
         Shares and otherwise to the same effect as the opinion required by
         Section 5(b)(3) hereof.

                 (5)      A letter from Price Waterhouse LLP, in form and
         substance satisfactory to the Representatives, dated such Date of
         Delivery, substantially the same in scope and substance as the letter
         furnished to the Representatives pursuant to Section 5(e) hereof,
         except that the "specified date" in the letter furnished pursuant to
         this Section 5(g)(5) shall be a date not more than three days prior to
         such Date of Delivery.

         If any condition specified in this Section shall not have been
fulfilled when and as required to be fulfilled, this Agreement may be
terminated by the Representatives by notice to the Company at any time at or
prior to Closing Time, and such termination shall be without liability of any
party to any other party except as provided in Section 4 and except that
Sections 6 and 7 shall survive any such termination and remain in full force
and effect.

         Section 6.  Indemnification.  (a)  The Company hereby agrees to
indemnify and hold harmless each Underwriter and each person, if any, who
controls any Underwriter within the meaning of Section 15 of the 1933 Act or
Section 20 of the 1934 Act as follows:

                 (1)      against any and all loss, liability, claim, damage
         and expense whatsoever, as incurred, arising out of any





                                       23
<PAGE>   24
         untrue statement or alleged untrue statement of a material fact
         contained in the Registration Statement (or any amendment thereto),
         including the information deemed to be part of the Registration
         Statement pursuant to Rule 430A(b) or Rule 434 of the 1933 Act
         Regulations, if applicable, or the omission or alleged omission
         therefrom of a material fact required to be stated therein or
         necessary to make the statements therein not misleading or arising out
         of any untrue statement or alleged untrue statement of a material fact
         contained in any preliminary prospectus or the Prospectus (or any
         amendment or supplement thereto), or the omission, or alleged omission
         therefrom of a material fact necessary in order to make the statements
         therein, in the light of the circumstances under which they were made,
         not misleading;

                 (2)      against any and all loss, liability, claim, damage
         and expense whatsoever, as incurred, to the extent of the aggregate
         amount paid in settlement of any litigation, or any investigation or
         proceeding by any governmental agency or body, commenced or
         threatened, or of any claim whatsoever based upon any such untrue
         statement or omission, or any such alleged untrue statement or
         omission, if such settlement is effected with the written consent of
         the Company; and

                 (3)      against any and all expense whatsoever, as incurred
         (including, subject to Section 6(c) hereof, the fees and disbursements
         of counsel chosen by the Representatives), reasonably incurred in
         investigating, preparing or defending against any litigation, or any
         investigation or proceedings by any governmental agency or body,
         commenced or threatened, or any claim whatsoever based upon any such
         untrue statement or omission, or any such alleged untrue statement or
         omission, to the extent that any such expense is not paid under (1) or
         (2) above;

provided, however, that this indemnity agreement shall not apply to any loss,
liability, claim, damage or expense to the extent arising out of any untrue
statement or omission or alleged untrue statement or omission made in reliance
upon and in conformity with written information furnished to the Company by any
Underwriter through the Representatives expressly for use in the Registration
Statement (or any amendment thereto) or any preliminary prospectus or the
Prospectus (or any amendment or supplement thereto).

         (b)     Each Underwriter severally agrees to indemnify and hold
harmless the Company, its trustees, each of its officers who signed the
Registration Statement, and each person, if any, who





                                       24
<PAGE>   25
controls the Company within the meaning of Section 15 of the 1933 Act or
Section 20 of the 1934 Act against any and all loss, liability, claim, damage
and expense described in the indemnity contained in subsection (a) of this
Section, as incurred, but only with respect to untrue statements or omissions,
or alleged untrue statements or omissions, made in the Registration Statement
(or any amendment thereto) or any preliminary prospectus or the Prospectus (or
any amendment or supplement thereto) in reliance upon and in conformity with
written information furnished to the Company by such Underwriter through the
Representatives expressly for use in the Registration Statement (or any
amendment thereto) or such preliminary prospectus or the Prospectus (or any
amendment or supplement thereto).

         (c)     Each indemnified party shall give notice as promptly as
reasonably practicable to each indemnifying party of any action commenced
against it in respect of which indemnity may be sought hereunder, but failure
to so notify an indemnifying party shall not relieve such indemnifying party
from any liability which it may have otherwise than on account of this
indemnity agreement.  An indemnifying party may participate at its own expense
in the defense of any such action.  In no event shall the indemnifying
parties be liable for fees and expenses of more than one counsel (in addition
to any local counsel) separate from their own counsel for all indemnified
parties in connection with any one action or separate but similar or related
actions in the same jurisdiction arising out of the same general allegations or
circumstances.  No indemnifying party shall, without the prior written consent
of the indemnified parties, settle or compromise or consent to the entry of any
judgment with respect to any litigation, or any investigation or proceeding by
any governmental agency or body, commenced or threatened, or any claim
whatsoever in respect of which indemnification or contribution could be sought
under this Section 6 or Section 7 hereof (whether or not the indemnified
parties are actual or potential parties thereto), unless such settlement,
compromise or consent includes an unconditional release of each indemnified
party from all liability arising out of such litigation, investigation,
proceeding or claim.

         Section 7.  Contribution.  If the indemnification provided for in
Section 6 hereof is for any reason unavailable to or insufficient to hold
harmless an indemnified party in respect of any losses, liabilities, claims,
damages or expenses referred to therein, then each indemnifying party shall
contribute to the aggregate amount of such losses, liabilities, claims, damages
and expenses incurred by such indemnified party, as incurred, (i) in





                                       25
<PAGE>   26
such proportion as is appropriate to reflect the relative benefits received by
the Company on the one hand and the Underwriters on the other hand from the
offering of the Shares pursuant to this Agreement or (ii) if the allocation
provided by clause (i) is not permitted by applicable law, in such proportion
as is appropriate to reflect not only the relative benefits referred to in
clause (i) above but also the relative fault of the Company on the one hand and
of the Underwriters on the other hand in connection with the statements or
omissions which resulted in such losses, liabilities, claims, damages or
expenses, as well as any other relevant equitable considerations.  The relative
benefits received by the Company on the one hand and the Underwriters on the
other hand in connection with the offering of the Shares pursuant to this
Agreement shall be deemed to be in the same respective proportions as the total
net proceeds from the offering of the Shares pursuant to this Agreement (before
deducting expenses) received by the Company and the total underwriting discount
received by the Underwriters, in each case as set forth on the cover of the
Prospectus, bear to the aggregate initial public offering price of the Shares
as set forth on such cover.  The relative fault of the Company on the one hand
and the Underwriters on the other hand shall be determined by reference to,
among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Company or by the Underwriters and the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent such statement or omission.  The Company and the
Underwriters agree that it would not be just and equitable if contribution
pursuant to this Section 7 were determined by pro rata allocation (even if the
Underwriters were treated as one entity for such purpose) or by any other
method of allocation which does not take account of the equitable
considerations referred to above in this Section 7.  The aggregate amount of
losses, liabilities, claims, damages and expenses incurred by an indemnified
party and referred to above in this Section 7 shall be deemed to include any
legal or other expenses reasonably incurred by such indemnified party in
investigating, preparing or defending against any litigation, or any
investigation or proceeding by any governmental agency or body, commenced or
threatened, or any claim whatsoever based upon any such untrue or alleged
untrue statement or omission or alleged omission.  Notwithstanding the
provisions of this Section 7, no Underwriter shall be required to contribute
any amount in excess of the amount by which the total price at which the Shares
underwritten by it and distributed to the public were offered to the public
exceeds the amount of any damages which such Underwriter has otherwise been
required to pay by reason of such untrue or alleged untrue statement or
omission or alleged omission.  No person guilty of fraudulent misrepresentation





                                       26
<PAGE>   27
(within the meaning of Section 11(f) of the 1933 Act) shall be entitled to
contribution from any person who was not guilty of such fraudulent
misrepresentation.  For purposes of this Section, each person, if any, who
controls an Underwriter within the meaning of Section 15 of the 1933 Act or
Section 20 of the 1934 Act shall have the same rights to contribution as such
Underwriter, and each trustee of the Company, each officer of the Company who
signed the Registration Statement, and each person, if any, who controls the
Company within the meaning of Section 15 of the 1933 Act or Section 20 of the
1934 Act shall have the same rights to contribution as the Company.  The
Underwriters' respective obligations to contribute pursuant to this Section 7
are several in proportion to the number of Initial Shares set forth opposite
their respective names in Schedule A hereto and not joint.

         Section 8.  Representations, Warranties and Agreements to Survive
Delivery.  All representations, warranties and agreements contained in this
Agreement and the Pricing Agreement, or contained in certificates of officers
of the Company submitted pursuant hereto, shall remain operative and in full
force and effect, regardless of any investigation made by or on behalf of any
Underwriter or any controlling person, or by or on behalf of the Company, and
shall survive delivery of the Shares to the Underwriters.

         Section 9.  Termination of Agreement.  (a)  The Representatives may
terminate this Agreement, by notice to the Company, at any time at or prior to
Closing Time (i) if there has been, since the date of this Agreement or since
the respective dates as of which information is given in the Prospectus, any
material adverse change in the condition, financial or otherwise, or in the
earnings, business affairs or business prospects of the Company, whether or not
arising in the ordinary course of business, or (ii) if there has occurred any
material adverse change in the financial markets in the United States or
elsewhere or any outbreak of hostilities or escalation of existing hostilities
or other calamity or crisis the effect of which is such as to make it, in the
Representatives' judgment, impracticable to market the Shares or enforce
contracts for the sale of the Shares, or (iii) if trading in the Shares of
Beneficial Interest of the Company has been suspended or limited by the
Commission or the American Stock Exchange, or if trading generally on either
the American Stock Exchange or the New York Stock Exchange has been suspended
or limited, or minimum or maximum prices for trading have been fixed, or
maximum ranges for prices for securities have been required, by either of said
exchanges or by order of the Commission, the NASD or any other governmental
authority, or (iv) if a banking moratorium has been declared by Federal, New
York or District of Columbia





                                       27
<PAGE>   28
authorities.  As used in this Section 9(a), the term "Prospectus" means the
Prospectus in the form first used to confirm sales of the Shares.

         (b)     If this Agreement is terminated pursuant to this Section, such
termination shall be without liability of any party to any other party except
as provided in Section 4, and provided further that Sections 6 and 7 hereof
shall survive such termination.

         Section 10.  Default by One or More of the Underwriters.  If one or
more of the Underwriters shall fail at Closing Time to purchase the Shares
which it or they are obligated to purchase under this Agreement and the Pricing
Agreement (the "Defaulted Shares"), the Representatives shall have the right,
within 24 hours thereafter, to make arrangements for one or more of the
non-defaulting Underwriters, or any other underwriters, to purchase all, but
not less than all, of the Defaulted Shares in such amounts as may be agreed
upon and upon the terms herein set forth; if, however, the Representatives
shall not have completed such arrangements within such 24-hour period, then:

         (a)     if the number of Defaulted Shares does not exceed 10% of the
number of Initial Shares, each of the non-defaulting Underwriters shall be
obligated, severally and not jointly, to purchase the full amount thereof in
the proportions that their respective underwriting obligations hereunder bear
to the underwriting obligations of all non-defaulting Underwriters, or

         (b)     if the number of Defaulted Shares exceeds 10% of the number of
Initial Shares, this Agreement shall terminate without liability on the part of
any non-defaulting Underwriter.

         No action taken pursuant to this Section shall relieve any defaulting
Underwriter from liability in respect of its default.

         In the event of any such default which does not result in a
termination of this Agreement, either the Representatives or the Company shall
have the right to postpone Closing Time for a period not exceeding seven days
in order to effect any required changes in the Registration Statement or
Prospectus or in any other documents or arrangements.

         Section 11.  Notices.  All notices and other communications hereunder
shall be in writing and shall be deemed to have been duly given if mailed or
transmitted by any standard form of telecommunication.  Notices to the
Underwriters shall be directed to the Representatives c/o Merrill Lynch & Co.,
Merrill Lynch, Pierce, Fenner & Smith Incorporated at Merrill Lynch World
Headquarters, North Tower, World Financial Center, New York, New





                                       28
<PAGE>   29
York 10281-1209, attention of Mr. Fred F. Hessinger, Vice President, Corporate
Syndicate; and notices to the Company shall be directed to it at Washington
Real Estate Investment Trust, 10400 Connecticut Avenue, Kensington, Maryland
20895, attention of: Benjamin H. Dorsey, Esq.

         Section 12.  Parties.  This Agreement and the Pricing Agreement shall
each inure to the benefit of and be binding upon the Underwriters, the Company
and their respective successors.  Nothing expressed or mentioned in this
Agreement or the Pricing Agreement is intended or shall be construed to give
any person, firm or corporation, other than the Underwriters and the Company
and their respective successors and the controlling persons and officers and
trustees referred to in Sections 6 and 7 and their heirs and legal
representatives, any legal or equitable right, remedy or claim under or in
respect of this Agreement or the Pricing Agreement or any provision herein or
therein contained.  This Agreement and the Pricing Agreement and all conditions
and provisions hereof and thereof are intended to be for the sole and exclusive
benefit of the parties hereto and thereto and their respective successors and
said controlling persons and officers and trustees and their heirs and legal
representatives, and for the benefit of no other person, firm or corporation.
No purchaser of Shares from any Underwriter shall be deemed to be a successor
by reason merely of such purchase.

         Section 13.  Governing Law and Time; Miscellaneous.  This Agreement
and the Pricing Agreement shall be governed by and construed in accordance with
the laws of the State of New York applicable to agreements made and to be
performed in said State.  Specified times of day refer to New York City time.

         The Washington Real Estate Investment Trust is a common law trust
organized under District of Columbia law on November 18, 1960.  Under the terms
of the Declaration of Trust all persons dealing with the Company shall look
solely to the Company property for satisfaction of claims of any nature, and no
trustee, officer or agent of the Company shall be held to any personal liability
whatsoever, in tort, contract or otherwise as the result of the execution and
delivery of this Agreement by the Company.





                                       29
<PAGE>   30
         If the foregoing is in accordance with your understanding of our
agreement, please sign and return to us a counterpart hereof, whereupon this
instrument along with all counterparts will become a binding agreement between
the Underwriters and the Company in accordance with its terms.

                                               Very truly yours,

                                               WASHINGTON REAL ESTATE INVESTMENT
                                                 TRUST


                                               By 
                                                  ------------------------------
                                                   President and Chief Executive
                                                     Officer

CONFIRMED AND ACCEPTED,
as of the date first above written:

MERRILL LYNCH & CO.
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
ALEX. BROWN & SONS INCORPORATED
A.G. EDWARDS & SONS, INC.
LEGG MASON WOOD WALKER, INCORPORATED

By: Merrill Lynch & Co.
    Merrill Lynch, Pierce, Fenner & Smith
                Incorporated


By 
   --------------------------------------

For themselves and as Representatives
of the other Underwriters named
in Schedule A hereto.





                                       30
<PAGE>   31
                                   SCHEDULE A

<TABLE>
<CAPTION>                                                                      
                                                                                              Number
                                                                                            of Initial 
         Name of Underwriter                                                                  Shares
         -------------------                                                                ----------
<S>                                                                                        <C>
Merrill Lynch, Pierce, Fenner & Smith                                               
            Incorporated  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alex. Brown & Sons Incorporated   . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.G. Edwards & Sons, Inc.   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Legg Mason Wood Walker, Incorporated  . . . . . . . . . . . . . . . . . . . . . . . . . . 
                                                                                    
                                                                                    
                                                                                    
                                                                                    
                                                                                           _________
Total   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3,500,000
                                                                                           =========
</TABLE>




<PAGE>   32
                                                                       Exhibit A

                                3,500,000 Shares

                    WASHINGTON REAL ESTATE INVESTMENT TRUST
                    (a District of Columbia business trust)

                         Shares of Beneficial Interest

                                 (No Par Value)

                               PRICING AGREEMENT


                                                                   July __, 1995


MERRILL LYNCH & CO.
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
ALEX. BROWN & SONS INCORPORATED
A.G. EDWARDS & SONS, INC.
LEGG MASON WOOD WALKER, INCORPORATED
  as Representatives of the several Underwriters
  named in the within-mentioned Purchase Agreement
c/o Merrill Lynch & Co.
    Merrill Lynch, Pierce, Fenner & Smith Incorporated
    Merrill Lynch World Headquarters
    North Tower
    World Financial Center
    New York, New York 10281-1209

Dear Sirs:

         Reference is made to the Purchase Agreement, dated July __, 1995 (the
"Purchase Agreement"), relating to the purchase by the several Underwriters
named in Schedule A thereto, for whom Merrill Lynch & Co., Merrill Lynch,
Pierce, Fenner & Smith Incorporated, Alex. Brown & Sons Incorporated, A.G. 
Edwards & Sons, Inc. and Legg Mason Wood Walker, Incorporated are acting as 
representatives (the "Representatives"), of the above shares of beneficial 
interest (the "Shares") of Washington Real Estate Investment Trust 
(the "Company").

         Pursuant to Section 2 of the Purchase Agreement, the Company agrees
with each Underwriter as follows:

                 1.  The initial public offering price per share for the
         Shares, determined as provided in said Section 2, shall be $______.





<PAGE>   33
                 2.  The purchase price per share for the Shares to be paid by
         the several Underwriters shall be $______, being an amount equal to
         the initial public offering price set forth above less $_______ per
         share.

         If the foregoing is in accordance with your understanding of our
agreement, please sign and return to the Company a counterpart hereof,
whereupon this instrument, along with all counterparts, will become a binding
agreement between the Underwriters and the Company in accordance with its
terms.

                                              Very truly yours,

                                              WASHINGTON REAL ESTATE INVESTMENT
                                                TRUST


                                              By 
                                                 -------------------------------
                                                   President and Chief Executive
                                                     Officer

CONFIRMED AND ACCEPTED,
  as of the date first above written:

MERRILL LYNCH & CO.
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
ALEX. BROWN & SONS INCORPORATED
A.G. EDWARDS & SONS, INC.
LEGG MASON WOOD WALKER, INCORPORATED

By: Merrill Lynch & Co.
    Merrill Lynch, Pierce, Fenner & Smith
                Incorporated


By 
   ---------------------------------------
              Vice President

For themselves and as Representatives
of the other Underwriters named in
Schedule A to the Purchase Agreement.





                                       2

<PAGE>   1
                             [ARENT FOX LETTERHEAD]
                                                                       Exhibit 5





                                 June 26, 1995




The Trustees
Washington Real Estate Investment Trust
10400 Connecticut Avenue
Kensington, Maryland  20895

Gentlemen:

         We have acted as counsel to Washington Real Estate Investment Trust
(the "Trust") with respect to the Trust's Registration Statement on Form S-3
(the "Registration Statement") filed by the Trust with the Securities and
Exchange Commission on June 26, 1995, in connection with the registration under
the Securities Act of 1933 of 4,025,000 Shares of Beneficial Interest, no par
value (the "Shares").

         As counsel to the Trust, we have examined the Trust's Declaration of
Trust as amended (the "Declaration of Trust") and such Trust records,
certificates and other documents and such questions of law as we considered
necessary or appropriate for the purpose of this opinion.

         The 4,025,000 Shares to be sold by the Trust will, when issued in
accordance with the terms of the Underwriting Agreement between the Trust and
the Underwriters, be legally issued, fully paid and, subject to the following
paragraph, nonassessable.

         The Declaration of Trust provides that no shareholder shall be
personally liable in connection with the Trust's property or the affairs of the
Trust.  The Declaration of Trust further provides that the Trust shall
indemnify and hold harmless shareholders against all claims and liabilities and
related reasonable expenses to which they become subject by reason of their
being or having been shareholders.  In addition, the Trust, as a matter of
practice, inserts a clause in its business, management and other contracts that
provides that shareholders shall not be personally liable thereunder.  In our
opinion, no personal liability will attach to the Trust's shareholders for
contract claims under any contract containing such a clause where adequate
notice is given.





<PAGE>   2
Arent Fox

The Trustees
Washington Real Estate Investment Trust
June 26, 1995
Page 2



However, in respect to tort claims and contract claims where shareholders
liability is not so negated, claims for taxes and certain statutory liability,
the shareholders may, in some jurisdictions, be personally liable to the extent
that such claims are not satisfied by the Trust.

         The Declaration of Trust, the actual operations of the Trust to date
and the proposed continuing method of operation of the Trust, as set forth in
the Prospectus (included in the Registration Statement), have been reviewed.
If the Trust continues to operate in the manner in which it has to date, and if
the Trust is operated according to the policies and in the manner stated in the
Declaration of Trust and in the Prospectus, the Trust will continue to qualify
as a Real Estate Investment Trust pursuant to the Internal Revenue Code of
1986, and under present law the federal income tax treatment of the Trust will
be as set forth in the Prospectus under the heading "Shares."

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to all references to our firm in the Registration
Statement.

                                  Very truly yours,

                                  ARENT FOX KINTNER PLOTKIN & KAHN


                                  By: s/ JEFFREY E. JORDAN
                                     ------------------------------------------
                                         Jeffrey E. Jordan






<PAGE>   1
                      CONSENT OF INDEPENDENT ACCOUNTANTS




To the Trustees and Shareholders of 
Washington Real Estate Investment Trust



We hereby consent to the incorporation by reference in the Prospectus
constituting part of this Registration Statement on Form S-3 of our report
dated February 22, 1995 appearing on page 16 of Washington Real Estate
Investment Trust's Annual Report on Form 10-K for the year ended December 31,
1994.  We also consent to the reference to us under the heading "Experts"
in such Prospectus.




Price Waterhouse LLP
June 26, 1995







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