Boston Properties, Inc. Announces First Quarter 2006 Results and an Agreement to Sell 280 Park Avenue

April 25, 2006
Reports diluted FFO per share of $1.03 Reports diluted EPS of $0.59

BOSTON, April 25 /PRNewswire-FirstCall/ -- Boston Properties, Inc. (NYSE: BXP), a real estate investment trust, reported results today for the first quarter ended March 31, 2006.

Funds from Operations (FFO) for the quarter ended March 31, 2006 were $119.2 million, or $1.06 per share basic and $1.03 per share diluted. This compares to FFO for the quarter ended March 31, 2005 of $117.3 million, or $1.06 per share basic and $1.03 per share diluted. The weighted average number of basic and diluted shares outstanding totaled 112,508,647 and 120,013,441, respectively, for the quarter ended March 31, 2006 and 110,187,333 and 117,721,288, respectively, for the quarter ended March 31, 2005.

Net income available to common shareholders was $67.7 million for the three months ended March 31, 2006, compared to $61.2 million for the quarter ended March 31, 2005. Net income available to common shareholders per share (EPS) for the quarter ended March 31, 2006 was $0.60 basic and $0.59 on a diluted basis. This compares to EPS for the first quarter of 2005 of $0.56 basic and $0.55 on a diluted basis. EPS includes $0.05 and $0.01, on a diluted basis, related to gains on sales of real estate and discontinued operations for the quarters ended March 31, 2006 and 2005, respectively.

The reported results are unaudited and there can be no assurance that the results will not vary from the final information for the quarter ended March 31, 2006. In the opinion of management, all adjustments considered necessary for a fair presentation of these reported results have been made.

As of March 31, 2006, the Company's portfolio consisted of 123 properties comprising approximately 42.7 million square feet, including four properties under construction and one expansion project totaling 1.2 million square feet. The overall percentage of leased space for the 117 properties in service as of March 31, 2006 was 94.3%.

Significant events of the first quarter include:

-- On January 3, 2006, the Company completed the previously disclosed sale of a parcel of land at the Prudential Center located in Boston, Massachusetts, which is being developed as the Mandarin Oriental, a hotel and condominium mixed-use complex.

-- On January 17, 2006, the Company placed-in-service its Seven Cambridge Center development project located in Cambridge, Massachusetts. Seven Cambridge Center is a fully-leased, build-to-suit project with approximately 231,000 square feet of office, research laboratory and retail space. The Company has leased 100% of the space to the Massachusetts Institute of Technology for occupancy by its affiliate, the Eli and Edythe L. Broad Institute. On October 1, 2005, the Company had placed-in-service the West Garage phase of the project consisting of parking for approximately 800 cars.

-- On January 31, 2006, the Company repaid the mortgage loan collateralized by its 101 Carnegie Center property located in Princeton, New Jersey totaling approximately $6.6 million using available cash. There was no prepayment penalty associated with the repayment. The mortgage loan bore interest at a fixed rate of 7.66% per annum and was scheduled to mature on April 1, 2006.

-- On February 24, 2006, the Company repaid the construction financing collateralized by its Seven Cambridge Center property located in Cambridge, Massachusetts totaling approximately $112.5 million using approximately $7.5 million of available cash and $105.0 million drawn under the Company's Unsecured Line of Credit. The construction financing bore interest at a variable rate equal to LIBOR plus 1.25% per annum and was scheduled to mature in April 2007.

-- On March 13, 2006, a joint venture, in which the Company has a 50% interest, acquired a land parcel located in New York City for a purchase price of approximately $6.0 million.

-- On March 31, 2006, the Company commenced construction of South of Market, a Class A office project consisting of two buildings aggregating approximately 402,000 net rentable square feet located in Reston, Virginia. The Company expects that the project will be complete and initial occupancy is expected in the first quarter of 2008.

-- On March 31, 2006, the Company was added to the Standard & Poor's 500 Index, a world-renowned index which includes 500 leading companies in leading industries of the U.S. economy.

-- The Company was selected for the third year in a row as one of America's Most Admired Companies in the Real Estate Industry according to FORTUNE(R) magazine.

Transactions completed subsequent to March 31, 2006:

-- On April 6, 2006, the Company's Operating Partnership closed on an offering of $400 million in aggregate principal amount of its 3.75% exchangeable senior notes due 2036. The notes will be exchangeable into the Company's common stock at an initial exchange rate, subject to adjustment, of 8.9461 shares per $1,000 principal amount of notes (or an initial exchange price of approximately $111.78 per share of common stock) under the circumstances described in the prospectus supplement filed with the Securities and Exchange Commission on April 3, 2006. Noteholders may require the Operating Partnership to purchase the notes at par initially on May 18, 2013 and, after that date, the notes will be redeemable at par at the option of the Operating Partnership under the circumstances described in the prospectus.

-- On April 13, 2006, the Company acquired a parcel of land located in Waltham, Massachusetts for a purchase price of $16.0 million.

-- On April 25, 2006, the Company executed a binding agreement for the sale of 280 Park Avenue, a Class A office property of approximately 1,179,000 net rentable square feet located in midtown Manhattan, for approximately $1.2 billion. The sale is subject to the satisfaction of customary closing conditions and, although there can be no assurances that the sale will be consummated, it is expected to close during the second quarter of 2006.

EPS and FFO per Share Guidance:

The Company's guidance for the second quarter and full year 2006 for EPS (diluted) and FFO per share (diluted) is set forth and reconciled below. The guidance does not reflect the impact of the pending sale of 280 Park Avenue, including among other things, the estimated gain on sale, the use of proceeds and the loss of future earnings contribution from the property.


                              Second Quarter 2006        Full Year 2006
                              Low     -      High       Low    -     High
    Projected EPS (diluted)  $0.55    -     $0.57     $2.25    -    $2.37

    Add:
      Projected Company Share
       of Real Estate
       Depreciation and
       Amortization           0.47    -      0.47      1.95    -     1.95
    Less:
      Projected Company Share
       of Gains on Sales
       of Real Estate         0.00    -      0.00      0.05    -     0.05

    Projected FFO
     per Share (diluted)     $1.02    -     $1.04      $4.15   -    $4.27

Except as otherwise noted above, the foregoing estimates reflect management's view of current and future market conditions, including assumptions with respect to rental rates, occupancy levels and earnings impact of the events referenced in this release. The estimates do not include possible future gains or losses or the impact on operating results from possible future property acquisitions or dispositions. EPS estimates may be subject to fluctuations as a result of several factors, including changes in the recognition of depreciation and amortization expense and any gains or losses associated with disposition activity. The Company is not able to assess at this time the potential impact of these factors on projected EPS. By definition, FFO does not include real estate-related depreciation and amortization or gains or losses associated with disposition activities. There can be no assurance that the Company's actual results will not differ materially from the estimates set forth above.

Boston Properties will host a conference call tomorrow, April 26, 2006 at 10:00 AM (Eastern Time), open to the general public, to discuss the first quarter 2006 results, the 2006 projections and related assumptions, and other related matters. The number to call for this interactive teleconference is (800) 240-4186. A replay of the conference call will be available through May 3, 2006 by dialing (800) 405-2236 and entering the passcode 11057503, or as a podcast on the Company's website, http://www.bostonproperties.com, shortly after the call. An audio-webcast will also be archived and may be accessed in the Investor Relations section of the Company's website under the heading Events & Webcasts.

Additionally, a copy of Boston Properties' first quarter 2006 "Supplemental Operating and Financial Data" and this press release are available in the Investor Relations section of the Company's website at http://www.bostonproperties.com. These materials are also available by contacting Investor Relations at (617) 236-3322 or by written request to:

Investor Relations
Boston Properties, Inc.
111 Huntington Avenue, Suite 300
Boston, MA 02199-7610

Boston Properties is a fully integrated, self-administered and self-managed real estate investment trust that develops, redevelops, acquires, manages, operates and owns a diverse portfolio of Class A office properties and also includes two hotels. The Company is one of the largest owners and developers of Class A office properties in the United States, concentrated in five markets -- Boston, Midtown Manhattan, Washington, D.C., San Francisco and Princeton, N.J.

This press release contains forward-looking statements within the meaning of the Federal securities laws. You can identify these statements by our use of the words "guidance," "expects," "plans," "estimates," "projects," "intends," "believes" and similar expressions that do not relate to historical matters. You should exercise caution in interpreting and relying on forward-looking statements because they involve known and unknown risks, uncertainties and other factors which are, in some cases, beyond Boston Properties' control and could materially affect actual results, performance or achievements. These factors include, without limitation, the ability to enter into new leases or renew leases on favorable terms, dependence on tenants' financial condition, the uncertainties of real estate development and acquisition activity, the ability to effectively integrate acquisitions, the costs and availability of financing (including the impact of interest rates on our hedging program), the effects of local economic and market conditions, the effects of acquisitions and dispositions, including possible impairment charges, the impact of newly adopted accounting principles on the Company's accounting policies and on period-to-period comparisons of financial results, regulatory changes and other risks and uncertainties detailed from time to time in the Company's filings with the Securities and Exchange Commission. Boston Properties does not undertake a duty to update or revise any forward-looking statement whether as a result of new information, future events or otherwise, including its guidance for the second quarter and full fiscal year 2006.



                           BOSTON PROPERTIES, INC.
                    CONSOLIDATED STATEMENTS OF OPERATIONS

                                                      Three months ended
                                                           March 31,
                                                     2006              2005
                                                    (in thousands, except
                                                    for per share amounts)
                                                           (unaudited)
     Revenue
      Rental:
        Base rent                                  $276,398          $278,748
        Recoveries from tenants                      47,193            43,337
        Parking and other                            13,829            13,925
          Total rental revenue                      337,420           336,010
      Hotel revenue                                  12,343            12,096
      Development and management services             4,376             4,536
      Interest and other                              1,965             1,631
          Total revenue                             356,104           354,273

     Expenses
      Operating:
        Rental                                      112,614           108,484
        Hotel                                        11,477            10,809
      General and administrative                     14,642            14,813
      Interest                                       74,817            79,354
      Depreciation and amortization                  66,847            67,796
      Loss from early extinguishment of debt            467                --
          Total expenses                            280,864           281,256
     Income before minority interest in
      property partnership, income from
      unconsolidated joint ventures,
      minority interest in Operating
      Partnership, gains on sales of real
      estate and discontinued operations             75,240            73,017
     Minority interest in property partnership        1,236             1,652
     Income from unconsolidated joint ventures        1,290             1,335
     Income before minority interest in
      Operating Partnership, gains on
      sales of real estate and
      discontinued operations                        77,766            76,004
     Minority interest in Operating Partnership     (15,470)          (15,677)
     Income before gains on sales of real
      estate and discontinued operations             62,296            60,327
     Gains on sales of real estate, net of
      minority interest                               5,441             1,208
     Income before discontinued operations           67,737            61,535
     Discontinued operations:
      Loss from discontinued operations,
       net of minority interest                          --              (293)
     Net income available to common shareholders    $67,737           $61,242

     Basic earnings per common share:
      Income available to common
       shareholders before discontinued operations    $0.60             $0.56
      Discontinued operations, net of
       minority interest                                 --                --
      Net income available to common shareholders     $0.60             $0.56

      Weighted average number of common
       shares outstanding                           112,509           110,187

     Diluted earnings per common share:
      Income available to common
       shareholders before discontinued
       operations                                     $0.59             $0.55
      Discontinued operations, net of
       minority interest                                 --                --
      Net income available to common shareholders     $0.59             $0.55
      Weighted average number of common
       and common equivalent shares outstanding     115,157           112,364



                           BOSTON PROPERTIES, INC.
                         CONSOLIDATED BALANCE SHEETS

                                                 March 31,       December 31,
                                                   2006             2005

                                                   (in thousands, except
                                                    for share amounts)
                                                       (unaudited)
                   ASSETS

    Real estate                                 $8,864,907        $8,724,954
    Construction in progress                       107,051           177,576
    Land held for future development               189,024           248,645
      Less: accumulated depreciation            (1,320,712)       (1,265,073)
             Total real estate                   7,840,270         7,886,102

    Cash and cash equivalents                       32,214           261,496
    Cash held in escrows                            23,715            25,618
    Tenant and other receivables, net of
     allowance for doubtful accounts of
     $2,301 and $2,519, respectively                41,458            52,668
    Accrued rental income, net of
     allowance of $1,060 and $2,638,
     respectively                                  316,048           302,356
    Deferred charges, net                          246,214           242,660
    Prepaid expenses and other assets               91,646            41,261
    Investments in unconsolidated joint
     ventures                                       98,836            90,207
        Total assets                            $8,690,401        $8,902,368

    LIABILITIES AND STOCKHOLDERS' EQUITY

    Liabilities:
      Mortgage notes payable                    $3,185,550        $3,297,192
      Unsecured senior notes, net of
       discount                                  1,471,163         1,471,062
      Unsecured line of credit                      40,000            58,000
      Accounts payable and accrued expenses         86,938           109,823
      Dividends and distributions payable           95,344           107,643
      Accrued interest payable                      39,269            47,911
      Other liabilities                             98,296           154,123
        Total liabilities                        5,016,560         5,245,754

    Commitments and contingencies                       --                --
    Minority interests                             735,185           739,268
    Stockholders' equity:
      Excess stock, $.01 par value,
       150,000,000 shares authorized,
       none issued or outstanding                       --                --
      Preferred stock, $.01 par value,
       50,000,000 shares authorized, none
       issued or outstanding                            --                --
      Common stock, $.01 par value,
       250,000,000 shares authorized,
       112,892,557 and
       112,621,162 shares issued and
       112,813,657 and 112,542,262
       shares outstanding in
       2006 and 2005, respectively                   1,128             1,125
      Additional paid-in capital                 2,759,580         2,745,719
      Earnings in excess of dividends              173,129           182,105
      Treasury common stock, at cost                (2,722)           (2,722)
      Accumulated other comprehensive
       income (loss)                                 7,541            (8,881)
        Total stockholders' equity               2,938,656         2,917,346
                Total liabilities and
                 stockholders' equity           $8,690,401        $8,902,368



                           BOSTON PROPERTIES, INC.
                          FUNDS FROM OPERATIONS (1)

                                                     Three months ended
                                                           March 31,
                                                    2006               2005

                                                    (in thousands, except
                                                    for per share amounts)
                                                         (unaudited)

    Net income available to common
     shareholders                                  $67,737            $61,242

    Add:
      Minority interest in Operating
       Partnership                                  15,470             15,677
      Loss from discontinued operations,
       net of minority interest                         --                293
    Less:
      Minority interest in property
       partnership                                   1,236              1,652
      Income from unconsolidated joint
       ventures                                      1,290              1,335
      Gains on sales of real estate, net
       of minority interest                          5,441              1,208

    Income before minority interest in
     property partnership, income from
     unconsolidated joint ventures,
     minority interest in Operating
     Partnership, gains on sales of
     real estate and discontinued operations        75,240             73,017

    Add:
      Real estate depreciation and
       amortization (2)                             68,674             69,540
      Income from unconsolidated joint
       ventures                                      1,290              1,335
    Less:
      Minority interest in property
       partnership's share of funds from
       operations                                      268                (75)
      Preferred distributions                        3,110              3,280
      Loss from discontinued operations                 --                351

    Funds from operations (FFO)                    141,826            140,336

    Less:
      Minority interest in Operating
       Partnership's share of funds from
       operations                                   22,616             23,035

    Funds from operations available to
     common shareholders                          $119,210           $117,301

    Our percentage share of funds from
     operations - basic                             84.05%             83.59%

    Weighted average shares outstanding
     - basic                                       112,509            110,187

      FFO per share basic                            $1.06              $1.06

    Weighted average shares outstanding
     - diluted                                     120,013            117,721

      FFO per share diluted                          $1.03              $1.03

    (1) Pursuant to the revised definition of Funds from Operations adopted by
        the Board of Governors of the National Association of Real Estate
        Investment Trusts ("NAREIT"), we calculate Funds from Operations, or
        "FFO," by adjusting net income (loss) (computed in accordance with
        GAAP, including non-recurring items) for gains (or losses) from sales
        of properties, real estate related depreciation and amortization, and
        after adjustment for unconsolidated partnerships and joint ventures.
        FFO is a non-GAAP financial measure.  The use of FFO, combined with
        the required primary GAAP presentations, has been fundamentally
        beneficial in improving the understanding of operating results of
        REITs among the investing public and making comparisons of REIT
        operating results more meaningful.  Management generally considers FFO
        to be a useful measure for reviewing our comparative operating and
        financial performance because, by excluding gains and losses related
        to sales of previously depreciated operating real estate assets and
        excluding real estate asset depreciation and amortization (which can
        vary among owners of identical assets in similar condition based on
        historical cost accounting and useful life estimates), FFO can help
        one compare the operating performance of a company's real estate
        between periods or as compared to different companies.  Our
        computation of FFO may not be comparable to FFO reported by other
        REITs or real estate companies that do not define the term in
        accordance with the current NAREIT definition or that interpret the
        current NAREIT definition differently.

        FFO should not be considered as an alternative to net income
        (determined in accordance with GAAP) as an indication of our
        performance.  FFO does not represent cash generated from operating
        activities determined in accordance with GAAP and is not a measure of
        liquidity or an indicator of our ability to make cash distributions.
        We believe that to further understand our performance, FFO should be
        compared with our reported net income and considered in addition to
        cash flows in accordance with GAAP, as presented in our consolidated
        financial statements.

    (2) Real estate depreciation and amortization consists of depreciation and
        amortization from the Consolidated Statements of Operations of $66,847
        and $67,796, our share of unconsolidated joint venture real estate
        depreciation and amortization of $2,304 and $1,798 and depreciation
        and amortization from discontinued operations of $0 and $366, less
        corporate related depreciation and amortization of $477 and $420 for
        the three months ended March 31, 2006 and 2005, respectively.



                             BOSTON PROPERTIES, INC.
                          PORTFOLIO LEASING PERCENTAGES

                                                  % Leased by Location
                                            March 31, 2006  December 31, 2005
    Greater Boston                                    91.6%             89.9%
    Greater Washington, D.C.                          97.2%             97.2%
    Midtown Manhattan                                 98.9%             98.3%
    Princeton/East Brunswick, NJ                      87.2%             86.9%
    Greater San Francisco                             89.3%             90.8%
            Total Portfolio                           94.3%             93.8%


                                                    % Leased by Type
                                            March 31, 2006  December 31, 2005
    Class A Office Portfolio                          94.1%             93.7%
    Office/Technical Portfolio                        97.9%             97.6%
            Total Portfolio                           94.3%             93.8%

CONTACT:
Michael Walsh,
Senior Vice President, Finance
1-617-236-3410

Kathleen DiChiara
Investor Relations Manager,
1-617-236-3343

Both of Boston Properties, Inc.

Marilynn Meek
General Info.
1-212-827-3773
Financial Relations Board for Boston Properties, Inc.