Boston Properties, Inc. Announces Third Quarter 2006 Results

October 24, 2006
Reports diluted FFO per share of $1.16

Reports diluted EPS of $0.91

BOSTON, Oct. 24 /PRNewswire-FirstCall/ -- Boston Properties, Inc. (NYSE: BXP), a real estate investment trust, reported results today for the third quarter ended September 30, 2006.

Funds from Operations (FFO) for the quarter ended September 30, 2006 were $137.3 million, or $1.19 per share basic and $1.16 per share diluted. This compares to FFO for the quarter ended September 30, 2005 of $123.7 million, or $1.11 per share basic and $1.07 per share diluted. The weighted average number of basic and diluted shares outstanding totaled 115,431,903 and 120,726,865, respectively, for the quarter ended September 30, 2006 and 111,775,512 and 119,176,703, respectively, for the quarter ended September 30, 2005.

Net income available to common shareholders was $108.0 million for the three months ended September 30, 2006, compared to $57.6 million for the quarter ended September 30, 2005. Net income available to common shareholders per share (EPS) for the quarter ended September 30, 2006 was $0.93 basic and $0.91 on a diluted basis. This compares to EPS for the third quarter of 2005 of $0.51 basic and $0.50 on a diluted basis. EPS for the quarter ended September 30, 2006 includes $0.28, on a diluted basis, related to (1) gains on sales of real estate of $0.15 and (2) our share of the gain on sale of 265 Franklin Street of $0.13 which is included in income from unconsolidated joint ventures.

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 September 30, 2006. In the opinion of management, all adjustments considered necessary for a fair presentation of these reported results have been made.

As of September 30, 2006, the Company's portfolio consisted of 128 properties comprising approximately 42.5 million square feet, including five properties under construction totaling 1.2 million square feet and two hotels. The overall percentage of leased space for the 121 properties in service as of September 30, 2006 was 93.8%.

Significant events of the third quarter include:

  • During July 2006, the Company placed-in-service its Capital Gallery expansion project, consisting of a ten-story addition totaling approximately 319,000 net rentable square feet of Class A office space located in Washington, D.C. The Company has leased 97% of the space.
  • On August 1, 2006, the Company used available cash to repay the construction financing and permanent financing totaling approximately $34.0 million and $49.7 million, respectively, collateralized by the Capital Gallery property in Washington, D.C. The construction financing bore interest at a variable rate equal to LIBOR plus 1.65% per annum and was scheduled to mature in February 2008. The permanent financing bore interest at a fixed rate equal to 8.24% per annum and was scheduled to mature on August 15, 2006.
  • On August 3, 2006, the Company amended and restated its $605.0 million Unsecured Line of Credit by extending the maturity date from October 30, 2007 to August 3, 2010, with a provision for a one-year extension at the option of the Company, subject to certain conditions, and by reducing the per annum variable interest rate on outstanding balances from Eurodollar plus 0.65% to Eurodollar plus 0.55% per annum. A facility fee equal to 15 basis points per annum is payable in quarterly installments. The interest rate and facility fee are subject to adjustment in the event of a change in the Company's Operating Partnership's unsecured debt ratings. The Unsecured Line of Credit contains a competitive bid option that allows banks that are part of the lender consortium to bid to make loan advances to the Company at a reduced Eurodollar rate.
  • On August 10, 2006, the Company acquired 3200 Zanker Road, an approximately 544,000 net rentable square foot Class A office complex located in San Jose, California, at a purchase price of approximately $126.0 million. The acquisition was financed with available cash. 3200 Zanker Road is currently 100% leased with an average rental rate that is below market. The Company projects this property's 2007 Unleveraged FFO Return to be 6.9% and 2007 Unleveraged Cash Return to be 5.9%. The calculation of these returns and related disclosures are presented on the accompanying table entitled "Projected 2007 Returns on Acquisition." There can be no assurance that actual returns will not differ materially from these projections.
  • On August 31, 2006, the Company's Value-Added Fund acquired One and Two Circle Star Way, a 208,000 net rentable square foot office complex located in San Carlos, California, at a purchase price of approximately $63.5 million. The acquisition was financed with new mortgage indebtedness totaling $42.0 million and approximately $21.5 million in cash, of which the Company's share was approximately $5.4 million. The mortgage financing requires interest-only payments at a fixed interest rate of 6.57% per annum and matures in September 2013.
  • On September 1, 2006, the Company used available cash to repay the mortgage loan collateralized by its Montvale Center property located in Gaithersburg, Maryland totaling approximately $6.6 million. There was no prepayment penalty associated with the repayment. The mortgage loan bore interest at a fixed rate of 8.59% per annum and was scheduled to mature on December 1, 2006.
  • On September 15, 2006, a joint venture in which the Company has a 35% interest sold 265 Franklin Street, a Class A office property with approximately 347,000 net rentable square feet located in Boston, Massachusetts, at a sale price of approximately $170.0 million ($490 psf). Net cash proceeds totaled approximately $108.3 million, of which the Company's share was approximately $37.9 million, after the repayment of mortgage indebtedness of approximately $60.8 million and closing costs of approximately $0.9 million.
  • On September 18, 2006, the Company commenced construction of 77 Fourth Avenue, a Class A office project with approximately 210,000 net rentable square feet, located in Waltham, Massachusetts. The Company expects the development to be available for occupancy in the first quarter of 2008.
  • During the three months ended September 30, 2006, the Company signed new qualifying leases for 26,681 net rentable square feet of its 74,340 net rentable square foot master lease obligation related to the sale of 280 Park Avenue resulting in the recognition of approximately $21.0 million as gain on sale of real estate. The Company had deferred approximately $67.3 million of the gain on sale of 280 Park Avenue, which amount represented the maximum obligation under the master lease.

Transactions completed subsequent to September 30, 2006:

  • On October 2, 2006, the Company used available cash to repay the mortgage loan collateralized by its Embarcadero Center Three property located in San Francisco, California totaling approximately $133.4 million. There was no prepayment penalty associated with the repayment. The mortgage loan bore interest at a fixed rate of 6.40% per annum and was scheduled to mature on January 1, 2007.

EPS and FFO per Share Guidance:

The Company's guidance for the fourth quarter 2006 and full year 2007 for EPS (diluted) and FFO per share (diluted) is set forth and reconciled below. In addition to the assumptions described below the table, the guidance for the full year 2007 assumes that the Company's Board of Directors declares a special dividend in the amount of $5.25 per common share/unit in December 2006, payable by the end of January 2007, relating to the gain on sale of 280 Park Avenue; there can be no assurance, however, as to the exact amount or timing of this special dividend.


                                     Fourth Quarter 2006   Full Year 2007
                                          Low  -  High      Low  -  High
    Projected EPS (diluted)             $0.63  - $0.64    $2.33  - $2.48
    Add:
      Projected Company Share of
       Real Estate Depreciation
       and Amortization                  0.51  -  0.51     2.07  -  2.07
    Projected FFO per Share (diluted)   $1.14  - $1.15    $4.40  - $4.55

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, October 25, 2006 at 10:00 AM Eastern Time, open to the general public, to discuss the third quarter 2006 results, the fourth quarter 2006 and 2007 projections and related assumptions, and other related matters that may be of interest to investors. The number to call for this interactive teleconference is (800) 240-4186 (Domestic) or (303) 275-2170 (International); no passcode required. A replay of the conference call will be available through November 1, 2006, by dialing (800) 405-2236 (Domestic) or (303) 590-3000 (International) and entering the passcode 11072412. There will also be a live audio webcast of the call which may be accessed on the Company's website at www.bostonproperties.com in the Investor Relations section, through www.fulldisclosure.com for individual investors, or through the password-protected event management site, www.streetevents.com, for institutional investors. Shortly after the call a replay of the webcast and a podcast will be available on the Company's website, www.bostonproperties.com, in the Investor Relations section, and archived for up to twelve months following the call.

Additionally, a copy of Boston Properties' third quarter 2006 "Supplemental Operating and Financial Data" and this press release are available in the Investor Relations section of the Company's website at 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 "assumes," "believes," "estimates," "expects," "guidance," "intends," "plans," "projects" 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, acquisition and disposition 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 the exact amount and timing of any related special dividend and possible impairment charges) on our operating results, 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 fourth quarter of 2006 and full fiscal year 2007.



                           BOSTON PROPERTIES, INC.
                    CONSOLIDATED STATEMENTS OF OPERATIONS

                                     Three months ended   Nine months ended
                                        September 30,        September 30,
                                       2006      2005       2006       2005

                                  (in thousands, except for per share amounts)
                                                   (unaudited)
    Revenue
      Rental:
        Base rent                   $273,034  $274,523   $826,587   $830,630
        Recoveries from tenants       45,954    43,983    138,653    129,156
        Parking and other             14,431    13,470     42,479     41,516
          Total rental revenue       333,419   331,976  1,007,719  1,001,302
      Hotel revenue                   19,847    17,453     51,864     47,115
      Development and management
       services                        4,558     4,923     14,164     13,596
      Interest and other              14,636     4,742     25,166      9,289
          Total revenue              372,460   359,094  1,098,913  1,071,302

    Expenses
      Operating:
        Rental                       111,594   111,112    334,440    326,051
        Hotel                         13,899    12,260     38,146     35,564
      General and administrative      12,739    13,270     43,177     42,335
      Interest                        73,571    75,700    226,837    233,287
      Depreciation and amortization   71,548    65,717    206,307    200,539
      Losses from early
       extinguishments of debt           208       -       32,132     12,896
          Total expenses             283,559   278,059    881,039    850,672
    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          88,901    81,035    217,874    220,630
    Minority interest in property
     partnership                         -       1,527      2,013      4,651
    Income from unconsolidated
     joint ventures                   20,200     1,117     23,167      3,299
    Income before minority interest
     in Operating Partnership, gains
     on sales of real estate and
     discontinued operations         109,101    83,679    243,054    228,580
    Minority interest in Operating
     Partnership                     (19,028)  (26,874)   (46,261)   (57,140)
    Income before gains on sales
     of real estate and
     discontinued operations          90,073    56,805    196,793    171,440
    Gains on sales of real estate,
     net of minority interest         17,889       -      604,200    103,384
    Income before discontinued
     operations                      107,962    56,805    800,993    274,824
    Discontinued operations:
      Income from discontinued
       operations, net of minority
       interest                          -         746        -        1,180
      Gains on sales of real estate
       from discontinued operations,
       net of minority interest          -         -          -        8,397
    Net income available to common
     shareholders                   $107,962   $57,551   $800,993   $284,401

    Basic earnings per common share:
      Income available to common
       shareholders before
       discontinued operations         $0.93     $0.51      $6.88      $2.48
      Discontinued operations, net
       of minority interest              -         -          -         0.08
      Net income available to
       common shareholders             $0.93     $0.51      $6.88      $2.56
      Weighted average number of
       common shares outstanding     115,432   111,776    113,989    110,915

    Diluted earnings per common share:
      Income available to common
       shareholders before
       discontinued operations         $0.91     $0.50      $6.74      $2.43
      Discontinued operations, net
       of minority interest              -         -          -         0.08
      Net income available to
       common shareholders             $0.91     $0.50      $6.74      $2.51
      Weighted average number of
       common and common equivalent
       shares outstanding            117,728   114,090    116,365    113,195



                           BOSTON PROPERTIES, INC.
                         CONSOLIDATED BALANCE SHEETS

                                               September 30,      December 31,
                                                   2006              2005

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

    Real estate                                 $9,040,264        $8,724,954
    Construction in progress                        57,392           177,576
    Land held for future development               210,336           248,645
      Less: accumulated depreciation            (1,372,826)       (1,265,073)
             Total real estate                   7,935,166         7,886,102

    Cash and cash equivalents                    1,049,026           261,496
    Cash held in escrows                            21,436            25,618
    Tenant and other receivables, net of
     allowance for doubtful accounts of
     $2,509 and $2,519, respectively                42,128            52,668
    Accrued rental income, net of allowance of
     $922 and $2,638, respectively                 310,560           302,356
    Deferred charges, net                          263,675           242,660
    Prepaid expenses and other assets               72,033            41,261
    Investments in unconsolidated joint ventures    83,485            90,207
             Total assets                       $9,777,509        $8,902,368

               LIABILITIES AND STOCKHOLDERS' EQUITY

    Liabilities:
      Mortgage notes payable                    $2,811,953        $3,297,192
      Unsecured senior notes, net of discount    1,471,370         1,471,062
      Unsecured exchangeable senior notes          450,000               -
      Unsecured line of credit                         -              58,000
      Accounts payable and accrued expenses        103,581           109,823
      Dividends and distributions payable           95,607           107,643
      Accrued interest payable                      45,703            47,911
      Other liabilities                            236,350           154,123
             Total liabilities                   5,214,564         5,245,754

    Commitments and contingencies                      -                 -
    Minority interests                             746,416           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, 116,675,935
       and 112,621,162 shares issued and 116,597,035
       and 112,542,262 shares outstanding in
       2006 and 2005, respectively                   1,166             1,125
      Additional paid-in capital                 3,068,952         2,745,719
      Earnings in excess of dividends              749,940           182,105
      Treasury common stock, at cost                (2,722)           (2,722)
      Accumulated other comprehensive loss            (807)           (8,881)
             Total stockholders' equity          3,816,529         2,917,346
               Total liabilities and
                stockholders' equity            $9,777,509        $8,902,368



                           BOSTON PROPERTIES, INC.
                          FUNDS FROM OPERATIONS (1)

                                 Three months ended      Nine months ended
                                    September 30,           September 30,
                                 2006         2005         2006       2005

                               (in thousands, except for per share amounts)
                                                (unaudited)
    Net income available to
     common shareholders      $107,962      $57,551     $800,993  $284,401

    Add:
      Minority interest in
       Operating Partnership    19,028       26,874       46,261    57,140
    Less:
      Minority interest in
       property partnership        -          1,527        2,013     4,651
      Income from unconsolidated
       joint ventures           20,200        1,117       23,167     3,299
      Gains on sales of real
       estate, net of
       minority interest        17,889          -        604,200   103,384
      Income from discontinued
       operations, net of
       minority interest           -            746          -       1,180
      Gains on sales of real
       estate from  discontinued
       operations, net of
       minority interest           -            -            -       8,397

    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    88,901       81,035      217,874   220,630

    Add:
      Real estate depreciation
       and amortization (2)     73,408       67,702      211,855   206,489
      Income from discontinued
       operations                  -            890          -       1,410
      Income from unconsolidated
       joint ventures            2,283 (3)    1,117        5,250 (3) 3,299
    Less:
      Minority interest in
       property partnership's
       share of funds from
       operations                  -            (32)         479        (1)
      Preferred distributions    1,912        3,200 (4)    7,987     9,820 (4)

    Funds from operations
     (FFO)                     162,680      147,576      426,513   422,009

    Add:
      Losses from early
       extinguishments of debt
       associated with the
       sales of real estate        -            -         31,444    11,041

    Funds from operations after
     a supplemental adjustment
     to exclude losses from early
     extinguishments of debt
     associated with the sales
     of real estate            162,680      147,576      457,957   433,050
    Less:
      Minority interest in the
       Operating Partnership's
       share of funds from
       operations after a
       supplemental adjustment
       to exclude losses from
       early extinguishments
       of debt associated with
       the sales of real
       estate                   25,404       23,905       72,105    70,770

    Funds from operations
     available to common
     shareholders after a
     supplemental adjustment
     to exclude losses from
     early extinguishments of
     debt associated with the
     sales of real estate     $137,276     $123,671     $385,852  $362,280

    Our percentage share
     of funds from
     operations - basic          84.38%       83.80%       84.26%    83.66%

    Weighted average shares
     outstanding - basic       115,432      111,776      113,989   110,915

    FFO per share basic after
     a supplemental adjustment
     to exclude losses from
     early extinguishments of
     debt associated with the
     sales of real estate        $1.19        $1.11        $3.38     $3.27

    FFO per share basic          $1.19        $1.11        $3.15     $3.18

    Weighted average shares
     outstanding - diluted     120,727      119,177      120,454   118,461

    FFO per share diluted
     after a supplemental
     adjustment to exclude
     losses from early
     extinguishments of debt
     associated with the sales
     of real estate              $1.16        $1.07        $3.29     $3.16

    FFO per share diluted        $1.16        $1.07        $3.07     $3.08


    (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.

        In addition to presenting FFO in accordance with the NAREIT
        definition, we also disclose FFO after a specific and defined
        supplemental adjustment to exclude losses from early extinguishments
        of debt associated with the sales of real estate.  The adjustment to
        exclude losses from early extinguishments of debt results when the
        sale of real estate encumbered by debt requires us to pay the
        extinguishment costs prior to the debt's stated maturity and to write-
        off unamortized loan costs at the date of the extinguishment.  Such
        costs are excluded from the gains on sales of real estate reported in
        accordance with GAAP.  However, we view the losses from early
        extinguishments of debt associated with the sales of real estate as an
        incremental cost of the sale transactions because we extinguished the
        debt in connection with the consummation of the sale transactions and
        we had no intent to extinguish the debt absent such transactions.  We
        believe that this supplemental adjustment more appropriately reflects
        the results of our operations exclusive of the impact of our sale
        transactions.

        Although our FFO as adjusted clearly differs from NAREIT's definition
        of FFO, and may not be comparable to that of other REITs and real
        estate companies, we believe it provides a meaningful supplemental
        measure of our operating performance because we believe that, by
        excluding the effects of the losses from early extinguishments of debt
        associated with the sales of real estate, management and investors are
        presented with an indicator of our operating performance that more
        closely achieves the objectives of the real estate industry in
        presenting FFO.

        Neither FFO nor FFO as adjusted should be considered as an alternative
        to net income (determined in accordance with GAAP) as an indication of
        our performance.  Neither FFO nor FFO as adjusted represents cash
        generated from operating activities determined in accordance with
        GAAP, and neither is a measure of liquidity or an indicator of our
        ability to make cash distributions.  We believe that to further
        understand our performance, FFO and FFO as adjusted 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
        $71,548, $65,717, $206,307 and $200,539, our share of unconsolidated
        joint venture real estate depreciation and amortization of $2,253,
        $2,188, $6,837 and $6,380 and depreciation and amortization from
        discontinued operations of $0, $190, $0 and $749, less corporate
        related depreciation and amortization of $393, $393, $1,289 and $1,179
        for the three months and nine months ended September 30, 2006 and
        2005, respectively.

    (3) Excludes approximately $17.9 million related to our share of the gain
        on sale and related loss from early extinguishment of debt associated
        with the sale of 265 Franklin Street.

    (4) Excludes approximately $12.1 million of income allocated to the
        holders of Series Two Preferred Units to account for their right to
        participate on an as-converted basis in the special dividend that
        followed previously completed sales of real estate.



                           BOSTON PROPERTIES, INC.
                    PROJECTED 2007 RETURNS ON ACQUISITION

                                                             3200 Zanker Road
                                                        (dollars in thousands)


    Base rent and recoveries from tenants                            $9,515
    Straight-line rent                                                  154
    Fair value lease revenue                                          1,143
    Total rental revenue                                             10,812

    Operating Expenses                                                2,116

    Revenue less Operating Expenses                                   8,696

    Depreciation and amortization                                    (2,162)

    Net income                                                       $6,534

    Add:
    Depreciation and amortization                                     2,162

    Unleveraged FFO                                                  $8,696

    Less:
    Straight-line rent                                                 (154)
    Fair value lease revenue                                         (1,143)

    Unleveraged Cash                                                 $7,399

    Cash                                                           $118,500
    Closing costs                                                       250
    Tenant and capital improvements                                   7,571
    Total Investment                                               $126,321
    Total Investment Per Square Foot of
     Net Rentable Building Area                                        $232

    Unleveraged FFO Return (1)                                         6.9%

    Unleveraged Cash Return (2)                                        5.9%


    (1) Unleveraged FFO Return is determined by dividing the Unleveraged FFO
        (based on the projected results for the year ending December 31, 2007)
        by Total Investment.  Other real estate companies may calculate this
        return differently.  Management believes projected Unleveraged FFO
        Return is a useful measure in the real estate industry when
        determining the appropriate purchase price for a property or
        estimating a property's value.  When evaluating acquisition
        opportunities, management considers, among other factors, projected
        Unleveraged FFO Return because it excludes, among other items,
        interest expense (which may vary depending on the level of corporate
        debt or property-specific debt), as well as depreciation and
        amortization expense (which can vary among owners of identical assets
        in similar condition based on historical cost accounting and useful
        life estimates).  In addition, management considers its cost of
        capital and available financing alternatives in making decisions
        concerning acquisitions.

    (2) Unleveraged Cash Return is determined by dividing the Unleveraged Cash
        (based on the projected results for the year ending December 31, 2007)
        by Total Investment.  Other real estate companies may calculate this
        return differently.  Management believes that projected Unleveraged
        Cash Return is also a useful measure of a property's value when used
        in addition to Unleveraged FFO Return because, by eliminating the
        effect of straight-lining of rent and the SFAS No. 141 treatment of
        in-place above- and below-market leases, it enables an investor to
        assess the cash on cash return from the property over the forecasted
        period.

        Management is presenting these projected returns and related
        calculations to assist investors in analyzing the Company's recent
        acquisition.  Management does not intend to present this data for any
        other purpose, for any other period or for its other properties, and
        is not intending for these measures to otherwise provide information
        to investors about the Company's financial condition or results of
        operations.  The Company does not undertake a duty to update any of
        these projections.



                           BOSTON PROPERTIES, INC.
                        PORTFOLIO LEASING PERCENTAGES

                                                % Leased by Location
                                        September 30, 2006  December 31, 2005
    Greater Boston                               90.5%             89.9%
    Greater Washington, D.C.                     96.3%             97.2%
    Midtown Manhattan                            99.9%             98.3%
    Princeton/East Brunswick, NJ                 88.0%             86.9%
    Greater San Francisco                        89.6%             90.8%
            Total Portfolio                      93.8%             93.8%

                                                   % Leased by Type
                                        September 30, 2006  December 31, 2005
    Class A Office Portfolio                     94.4%             93.7%
    Office/Technical Portfolio                   84.5%             97.6%
            Total Portfolio                      93.8%             93.8%

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

Kathleen DiChiara
Investor Relations Manager
+1-617-236-3343
Boston Properties, Inc.

Marilynn Meek
General Info.
+1-212-827-3773
Financial Relations Board,