SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549



                                   FORM 8-K



                                CURRENT REPORT

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

                    Pursuant to Section 13 of 15(d) of the
                        Securities Exchange Act of 1934

      Date of Report (Date of earliest event reported): November 21, 1997

                            BOSTON PROPERTIES, INC.
            (Exact name of Registrant as specified in its Charter)


                                   Delaware
                           (State of Incorporation)


1-13087                                                       04-2473675
(Commission File Number)                               (IRS Employer Id. Number)

8 Arlington Street
Boston, Massachusetts                                                    02116
(Address of principal executive offices)                              (Zip Code)

                                (617) 859-2600
             (Registrant's telephone number, including area code)


Item 2  Acquisition and Disposition of Assets

      On November 21, 1997, Boston Properties, Inc. (the "Company"), through 
Boston Properties Limited Partnership (the "Operating Partnership") a Delaware 
limited partnership of which the Company is the sole general partner and holds 
an approximately 67.9% interest, completed the acquisition of a property located
at 875 Third Avenue, New York, NY for approximately $208.5 million from Kenvic 
Associates, a New York general partnership.  The acquisition was funded through 
the assumption of $180 million in debt, the payment of $500,000 in cash and the 
issuance of 890,869 Operating Partnership Units (subject to adjustment in the 
event that the average closing price of the Company's Common Stock over the ten 
consecutive trading days prior to and including December 31, 1998 is less than 
$31.43 per share). Neither the Company, nor any director or officer of the 
Company was affiliated with or had a material relationship with the seller of 
this property.

      875 Third Avenue (the "Property") consists of approximately 682,000 net 
rentable square feet of class A office space in the Eastside submarket of 
midtown Manhattan.  Major tenants at the Property include Debvoise & Plimpton, 
Sidley & Austin and Instinet. As of September 30, 1997, the occupancy rate at
the Property was 100%.

Item 5  Other Events

      The Company has entered into amendments to the Company's Unsecured Line of
Credit that provide, among other things, that effective upon the closing of the
Company's acquisition of 875 Third Avenue: (i) the Company shall be required to
maintain a total indebtedness to total asset value ratio of not more than (a)
65% for the period through April 30, 1998, and (b) 55% after April 30, 1998; 
(ii) the Company shall be required to maintain a total secured indebtedness to 
total asset value ratio of not more than (a) 55% during the period through April
30, 1998, (b) 50% during the period from May 1, 1998 through June 30, 1998, and
(c) 40% after June 30, 1998; and (iii) the interest rate appliable to any
amounts drawn under the Unsecured Line of Credit for LIBOR-based loans shall be
equal to a floating rate based on a spread over LIBOR equal to (a) 125 basis
points during the period through January 31, 1998, (b) 140 basis points during
the period from February 1, 1998 through April 30, 1998, and (c) after April 30,
1998, from 90 basis points to 110 basis points, depending on the Company's
applicable leverage ratio.

Item 7  Financial Statements and Exhibits

(a) Financial Statements Under Rule 3-14 of Regulation S-X

Statement of Revenue over Certain Operating Expenses of 875 Third Avenue for the
year ended December 31, 1996 and (unaudited) for the nine months ended September
30, 1997

(b) Pro Forma Financial Statements

The Company has determined that it is impracticable at this time to file pro
forma financial statements for the Company as prescribed by Rule 3-14 of
Regulation S-X. Such statements will be filed as soon as practicable, but in no
event later than 60 days from this filing.

(c)   Exhibits

*2.1  Contribution Agreement dated September 2, 1997 by and among the Operating 
      Partnership, the Company and Kenvic Associates.

10.1  First Amendment to Revolving Credit Agreement dated July __, 1997 by
      and among the Company, BankBoston, N.A., and the subsidiaries of the
      Company and lending institutions named therein.

10.2  Second Amendment to Revolving Credit Agreement dated July __, 1997 by
      and among the Company, BankBoston, N.A., and the subsidiaries of the
      Company and lending institutions named therein.

10.3  Third Amendment to Revolving Credit Agreement dated September 11, 1997 by
      and among the Company, BankBoston, N.A., and the subsidiaries of the
      Company and lending institutions named therein.

10.4  Fourth Amendment to Revolving Credit Agreement dated October 31, 1997 by
      and among the Company, BankBoston, N.A., and the subsidiaries of the
      Company and lending institutions named therein.

*10.5 Note and Mortgage Modification Agreement between John Hancock, as lender
      and Boston Properties Limited Partnership, as borrower.

*10.6 Lock-Up and Registration Rights Agreement dated November 21, 1997 by and
      among the Operating Partnership, the Company, and Kenvic Associates.

*10.7 Agreement dated November 21, 1997 by and between the Operating
      Partnership, the Company, and Kenvic Associates.

 23.1 Consent of Coopers and Lybrand L.L.P., Independent Accountants.

*     To be filed by amendment


 
                            BOSTON PROPERTIES, INC.
                                   SIGNATURE

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


                               BOSTON PROPERTIES, INC.



                               /s/ David G. Gaw
                               --------------------------------------
                               David G. Gaw
                               Senior Vice President and
                               Chief Financial Officer

Date: November 26, 1997

 
                               875 THIRD AVENUE

                           STATEMENT OF REVENUE OVER
                          CERTAIN OPERATING EXPENSES

                     FOR THE YEAR ENDED DECEMBER 31, 1996
                 AND THE NINE MONTHS ENDED SEPTEMBER 30, 1997














                                      F-1

 
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors and Stockholders of
Boston Properties, Inc.:
 
  We have audited the accompanying statement of revenue over certain operating
expenses of 875 Third Avenue in midtown Manhattan, New York (the "Property")
for the year ended December 31, 1996. This statement is the responsibility of
the Property's management. Our responsibility is to express an opinion on this
statement based on our audit.
 
  We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the statement of revenue over certain
operating expenses is free of material misstatement. An audit includes
examining, on a test basis, evidence supporting the amounts and disclosures in
the statement. An audit also includes assessing the accounting principles used
and significant estimates made by management, as well as evaluating the overall
statement presentation. We believe that our audit provides a reasonable basis
for our opinion.

 The accompanying statement of revenue over certain operating expenses was
prepared for the purpose of complying with Rule 3-14 of the Securities and
Exchange Commission, and excludes certain expenses described in Note 2, and
therefore is not intended to be a complete presentation of the Property's
revenue and expenses.
 
  In our opinion, the statement referred to above presents fairly, in all
material respects, the revenue over certain operating expenses (as described
in Note 2) of 875 Third Avenue for the year ended December 31, 1996 in
conformity with generally accepted accounting principles.
 
       
 
October 17, 1997                                          /s/ Coopers & Lybrand
 
                                     F-2

 
                                875 THIRD AVENUE
                              STATEMENT OF REVENUE
                        OVER CERTAIN OPERATING EXPENSES
 
                             (DOLLARS IN THOUSANDS)
 
FOR THE YEAR ENDED FOR THE NINE MONTHS ENDED DECEMBER 31, 1996 SEPTEMBER 30, 1997 ------------------ ------------------------- (UNAUDITED) Revenue: Base rent...................... $25,255 $18,646 Recoveries from tenants........ 5,813 3,799 ------- ------- 31,068 22,445 ------- ------- Certain operating expenses (Note 2) Utilities...................... 1,002 859 Janitorial and cleaning........ 1,159 911 Security....................... 347 256 General and administrative..... 530 428 Interest....................... 15,750 11,813 Repairs and maintenance........ 999 740 Insurance...................... 212 161 Real estate taxes.............. 6,365 4,831 ------- ------- 26,364 19,999 ------- ------- Excess of revenue over certain operating expenses.............. $ 4,704 $ 2,446 ======= =======
The accompanying notes are an integral part of the statement. F-3 875 THIRD AVENUE NOTES TO STATEMENT OF REVENUE OVER CERTAIN OPERATING EXPENSES (DOLLARS IN THOUSANDS) 1. DESCRIPTION OF THE PROPERTY The accompanying statement of revenue over certain operating expenses (the "Statement") includes the operations 875 Third Avenue an approximately 691,000 square foot office building located in midtown Manhattan, New York. The Property will be acquired by Boston Properties, Inc. from an unrelated third party. 2. BASIS OF ACCOUNTING The accompanying Statement has been prepared on the accrual basis of accounting. The Statement has been prepared in accordance with Rule 3-14 of Regulation S-X of the Securities and Exchange Commission for real estate properties acquired or to be acquired. Accordingly, this statement excludes certain historical expenses not comparable to the operations of the Property after acquisition such as amortization, depreciation, property management fees, certain interest costs, corporate expenses and certain other costs not directly related to the future operations of the Property. 3. SIGNIFICANT ACCOUNTING POLICIES Rental Revenue Rental income is recognized on the straight-line method over the terms of the related leases. The excess of recognized rentals over amounts due pursuant to lease terms is recorded as accrued rent. The impact of the straight-line rent adjustment increased revenue by approximately $1.3 million and $768,000 for the year ended December 31, 1996, and the nine months ended September 30, 1997 (unaudited), respectively. Unaudited Interim Information The statement of revenue over certain operating expenses for the nine months ended September 30, 1997 is unaudited. In the opinion of management, all adjustments necessary for a fair presentation of such statement have been included. The results of operations for the period are not necessarily indicative of the Property's future results of operations. Risks and Uncertainties The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. 4. DESCRIPTION OF LEASING ARRANGEMENTS The commercial and office space is leased to tenants under leases with terms that vary in length. Certain of the leases contain real estate tax reimbursement clauses, operating expense reimbursement clauses and renewal options. Minimum lease payments to be received during the next five years for noncancelable operating leases in effect at December 31, 1996 are approximately as follows:
YEAR ENDING DECEMBER 31, ------------ (IN THOUSANDS) 1997......................................... $22,776 1998......................................... 24,667 1999......................................... 24,716 2000......................................... 22,920 2001......................................... 22,960 Thereafter................................... 22,608
F-4 875 THIRD AVENUE NOTES TO STATEMENT OF REVENUE OVER CERTAIN OPERATING EXPENSES (DOLLARS IN THOUSANDS) As of December 31, 1996, 3 tenants occupied approximately 77% of the leasable square feet and represented 84% of total 1996 Base Rent. 5. DEBT ASSUMPTION In connection with the acquisition, Boston Properties, Inc. will assume a mortgage note (the "Note") encumbering the property of $180,000 at December 31, 1996. Boston Properties Inc.'s assumption of this mortgage does not provide for any modification to the original terms; therefore, interest expense incurred prior to Boston Properties Inc.'s assumption of the mortgage note is representative of future interest expense. Accordingly, interest expense of $15,750 for 1996 and $11,813 for the nine months ended September 30, 1997 (unaudited) is recognized in the accompanying Statement. The Note requires interest only payments through January 1, 2000. Beginning February 1, 2000, the Note requires monthly installments of principal and interest of $1,417 and matures on January 1, 2003. The interest rate on the note is 8.75%. The note is subject to a prepayment penalty until January 15, 1998 in the event of an early principal repayment. Principal payments due on the mortgage note during the next five years are approximately as follows: 1997 $ -- 1998 -- 1999 -- 2000 1,182 2001 1,401
F-5

 
                                                                    Exhibit 10.1

                 FIRST AMENDMENT TO REVOLVING CREDIT AGREEMENT
                 ---------------------------------------------


     This First Amendment to Revolving Credit Agreement is made and entered into
as of the ____ day of July, 1997, by and among BOSTON PROPERTIES LIMITED
PARTNERSHIP ("BPLP") and the Wholly-owned Subsidiaries which are listed on
Schedule 1 to a certain Revolving Credit Agreement dated as of June 23, 1997,
having their principal place at 8 Arlington Street, Boston, Massachusetts 02116,
BANKBOSTON, N.A. (formerly known as The First National Bank of Boston)
("BankBoston"), a national banking association, having its principal place of
business at 100 Federal Street, Boston, Massachusetts 02110, and the other
lending institutions which may become parties hereto pursuant to Section 20 of
the Revolving Credit Agreement and BANKBOSTON, N.A., as agent for itself and
each other Bank.

     The following sets forth the background to this First Amendment to
Revolving Credit Agreement:

     A.  The Borrower, BankBoston and the Agent entered into that certain
Revolving Credit dated as of June 23, 1997 (the "Credit Agreement"); and

     B.  The Borrower, BankBoston and the Agent wish to amend the Credit
Agreement as hereinafter provided.

     NOW, THEREFORE, in consideration of One Dollar ($1.00) and other good and
valuable consideration by each of the parties hereto to the other of them in
hand this day paid, the receipt and sufficiency of which are hereby
acknowledged, it is agreed as follows:

                                      -1-

 
1.        Clauses (ii), (iii) and (iv) of the definition of Applicable Margin
     are deleted in their entirety and are replaced with the following:
   
          "(ii) For any period during which the Consolidated Total Indebtedness
          on the last day of a quarter is greater than 45% but less than or
          equal to 55% of the Consolidated Total Adjusted Asset Value for such
          quarter, the Applicable Margin will equal 1.1%.

          (iii) For any period during which the Consolidated Total Indebtedness
          on the last day of a quarter is greater than 35% but less than or
          equal to 45% of the Consolidated Total Adjusted Asset Value for such
          quarter, the Applicable Margin will equal 1%.

          (iv) For any period during which the Consolidated Total Indebtedness
          on the last day of a quarter is less than or equal to 35% of the
          Consolidated Total Adjusted Asset Value for such quarter, the
          Applicable Margin will equal .90%."

                                      -2-

 
2.        The definition of Annualized Borrowing Base Properties Capital
     Expenditures is hereby deleted in its entirety and replaced with the
     following:

          "(i) with respect to any Real Estate Assets, which are Borrowing Base
          Properties, other than hotel properties, for any rolling four (4)
          calendar quarters, determined as of the last day of a calendar
          quarter, an amount equal to 25c multiplied by the total number of
                                          ---------- --
          square feet of the Real Estate Assets, which are Borrowing Base
          Properties, other than hotel properties on the last day of such
          calendar quarter; (ii) with respect to the Marriott Cambridge Center
          Hotel in Cambridge, Massachusetts for so long as it is a Borrowing
          Base Property, for any rolling four (4) calendar quarters, determined
          as of the last day of a calendar quarter, an amount equal to six
          percent (6%) of gross revenues as determined in accordance with GAAP
          for such four (4) calendar quarters; (iii) with respect to the
          Marriott Long Wharf Hotel in Boston, Massachusetts, for so long as it
          is a Borrowing Base Property, for any rolling four (4) calendar
          quarters, determined as of the last day of a calendar quarter, an
          amount equal to five percent (5%) of gross revenues as determined in
          accordance with GAAP for such four (4) calendar quarters and (iv) with
          respect to the hotel properties which are Borrowing Base Properties,
          other than the Marriott Long Wharf Hotel and the Marriott Cambridge
          Center Hotel, for any rolling four (4) calendar quarters, determined
          as of the last day of a calendar quarter, an amount equal to the
          applicable percentage of gross revenues as determined in accordance
          with GAAP for such four (4) calendar quarters, which is to be
          maintained on the books of Borrower or in a separate reserve account
          for the replacement or repair of such hotel's furniture, fixtures and
          equipment pursuant to the applicable hotel management agreement or
          franchise agreement (which such agreement shall be in form and
          substance customary for a national hotel franchise)."

                                      -3-

 
3.        The definition of Annualized Capital Expenditures is hereby deleted in
     its entirety and replaced with the following:

          "(i) with respect to any Real Estate Assets other than hotel
          properties, for any rolling four (4) calendar quarters, determined as
          of the last day of a calendar quarter, an amount equal to 25c
          multiplied by the total number of square feet of the Real Estate
          ---------- --
          Assets other than hotel properties on the last day of such calendar
          quarter; (ii) with respect to the Marriott Cambridge Center Hotel in
          Cambridge, Massachusetts, for any rolling four (4) calendar quarters,
          determined as of the last day of a calendar quarter, an amount equal
          to six percent (6%) of gross revenues as determined in accordance with
          GAAP for such four (4) calendar quarters; (iii) with respect to the
          Marriott Long Wharf Hotel in Boston, Massachusetts, for any rolling
          four (4) calendar quarters, determined as of the last day of a
          calendar quarter, an amount equal to five percent (5%) of gross
          revenues as determined in accordance with GAAP for such four (4)
          calendar quarters and (iv) with respect to the hotel properties other
          than the Marriott Long Wharf Hotel and the Marriott Cambridge Center
          Hotel, for any rolling four (4) calendar quarters, determined as of
          the last day of a calendar quarter, an amount equal to the applicable
          percentage of gross revenues as determined in accordance with GAAP for
          such four (4) calendar quarters, which percentage shall be the
          percentage for each such hotel as is to be maintained on the books of
          the Borrower or in a separate reserve account for the replacement or
          repair of such hotel's furniture, fixtures and equipment pursuant to
          the applicable hotel management agreement or franchise agreement
          (which such agreement shall be in form and substance customary for a
          national hotel franchise)."

4.        The definition of Borrowing Base Value is hereby amended by deleting
     the word "Annual" contained in clause (ii) thereof and by replacing it with
     the following:

          "Annualized"

                                      -4-

 
5.        The definition of Consolidated EBITDA is hereby amended by inserting
     at the end of the definition thereof the following:

          "; and minus, for the purposes of calculating Consolidated Total
                 -----
          Adjusted Asset Value only, all interest income of the Borrower, the
          Guarantor and their respective Subsidiaries received in connection
          with any Mortgages."

                                      -5-

 
6.        The definition of Consolidated Total Adjusted Asset Value is hereby
     amended by deleting the reference to the parenthetical "(a)" in the second
     line of the definition and by deleting subparagraph (iv) of the definition
     in its entirety and inserting the following in place thereof:

                 "(iv) with respect to each Mortgage, the lesser of (y) the
          aggregate amount of principal under such Mortgage that will be due and
          payable to the Borrower or its Subsidiaries (to the extent of
          Borrower's direct or indirect interest therein) and (z) the purchase
          price paid by the Borrower or one of its Subsidiaries to acquire such
          Mortgage. Notwithstanding the foregoing, at any time at which the
          value determined pursuant to this clause (iv) equals or exceeds 10% of
          the total Fair Market Value of Real Estate Assets at such time, then
          upon the occurrence of an event of default under any Mortgage, the
          portion of the value of such defaulted Mortgage which is in excess of
          10% of the total Fair Market Value of Real Estate Assets at such time
          ("Excess Value") shall be reduced to seventy-five percent (75%) of the
          Excess Value as determined in this subparagraph (iv) until the earlier
          to occur of (a) the event of default under the Mortgage is cured in a
          commercially reasonable manner and (b) one hundred eighty (180) days
          after the occurrence of the event of default; thereafter, if the event
          of default under the defaulted Mortgage has not been cured in a
          commercially reasonable manner, the portion of the value of the
          defaulted Mortgage which is in excess of 10% of the total Fair Market
          Value of Real Estate Assets at such time shall be reduced to fifty
          percent (50%) of the Excess Value as determined in accordance with
          this subparagraph (iv) until the earlier to occur of (a) the event of
          default under the Mortgage is cured in a commercially reasonable
          manner and (b) eighteen (18) months after the occurrence of the event
          of default; thereafter, if the event of default under the defaulted
          Mortgage has not been cured in a commercially reasonable manner, the
          portion of the value of the defaulted Mortgage which is in excess of
          10% of the total Fair Market Value of Real Estate Assets at such time
          shall be reduced to zero."

                                      -6-

 
7.   The definition of Fair Market Value of Real Estate Assets is deleted in its
     entirety and the following is inserted in place thereof:

          "As of any date of determination, the sum of (A) with respect to Real
          Estate Assets other than hotel properties, an amount equal to (i)(x)
          Consolidated EBITDA for the most recent one (1) complete fiscal
          quarter (after adjustments for any straight-line rent accounting),
          minus (y) $.0625 multiplied by the aggregate square footage of all
          -----            ---------- --
          Real Estate Assets other than hotel properties at such date;
          multiplied by (ii) 4; with the product being divided by (iii) the
          ---------- --                                ------- --
          Capitalization Rate, plus (B) with respect to Real Estate Assets which
                               ----
          are hotel properties, an amount equal to (i)(x) Consolidated EBITDA
          for the most recent four (4) consecutive complete fiscal quarters
          (after adjustments for any straight-line rent accounting), minus (y)
                                                                     -----
          the respective Annualized Capital Expenditure for each of the hotel
          properties; divided by (ii) the Capitalization Rate."
                      ------- --

8.        The date specified in the definition of Financial Statement Date of
     "March 31, 1977" is hereby deleted and is replaced with "March 31, 1997."

9.        The definition of Grandfathered Properties is hereby amended by
     deleting each reference to "Total Commitment" contained therein and by
     replacing it with the following:

          "total Borrowing Base Values"

10.       The date specified in the definition of Maturity Date of "June ___,
     2000" is hereby deleted and is replaced with "June 23, 2000."

                                      -7-

 
11.       Clause (c) of the first paragraph of Section 9.2 is hereby deleted in
     its entirety and is replaced with the following:

          "(c)  suffer to exist for a period of more than thirty (30) days, with
          respect to the Borrowing Base Properties, any taxes, assessments,
          governmental charges and claims for labor, materials and supplies for
          which payment thereof is not being contested or for which payment
          notwithstanding a contest is required to be made in accordance with
          the provisions of (S)8.9 and has not been timely made and, with
          respect to any individual Borrowing Base Property, is in an amount in
          excess of the lesser of (i) $500,000 and (ii) three percent (3%) of
          the fair market value of the applicable Borrowing Base Property;"

12.       Clause (iv) of the proviso contained in Section 9.2(iv) is amended by
                             -------                                           
     inserting, immediately following the words "the BP Group" contained
     therein, the following:

          "and"

13.       Section 9.3(e) is hereby amended by inserting the words "Real Estate"
     after the words "Fair Market Value of" in the last line of Section 9.3(e).

14.       Section 9.3(f) is hereby amended by inserting the phrase "subject at
     all times to the restrictions of Section 9.7 hereof," at the beginning of
     Section 9.3(f).

15.       Clause (c)(vii) of Section 14.1 is amended to read in its entirety as
     follows:

          "(S)8.13;"

                                      -8-

 
16.       Clause (a) of Section 20.1 is amended by inserting, immediately
     following the words "Agent and the Borrower" contained therein, the
     following new words:

          "(other than during an Event of Default)"

17.       Clause (c) of Section 21 is hereby amended by deleting the reference
     to "Schedule 1.3" contained therein and by replacing it with the following:
         ------------
 
          "Schedule 2"
           ---------- 

18.       Clause (vi) of the second paragraph of Section 28 (relating to
     Unanimous Bank Approval) is hereby amended by deleting the period at the
     end thereof and by inserting a semi-colon and the word "or" in place
     thereof.

19.       Section 28 is hereby further amended by inserting the following new
     clause (vii) at the end of clause (vi) of the second paragraph thereof (and
     the remainder of the second paragraph of Section 28 shall become a new
     third paragraph):

          "(vii) changes the liability of the Guarantor under the Guaranty or
          has the effect of releasing the Guaranty."

20.       Clause (i) of the third paragraph of Section 28 (relating to Required
     Banks) is hereby deleted in its entirety and is replaced with the
     following:

          "(i) amends any of the covenants contained in (S)10.1 through (S)10.7,
          inclusive, or amends any of the definitions which are financial terms
          contained therein, or"

21.       All capitalized terms not otherwise defined herein shall have the
     meanings given to them in the Credit Agreement.

22.       Except as specifically amended by the terms of this First Amendment,
     all of the terms, conditions and provisions of the Credit Agreement and the
     other Loan Documents shall remain in full force and 

                                      -9-

 
     effect through the balance of the term of the Credit Agreement. From and
     after the date hereof, the Credit Agreement and this Amendment shall
     collectively be referred to as the "Credit Agreement."

                                      -10-

 
     WITNESS the execution hereof, under seal, in any number of counterpart
copies, each of which counterpart copy shall be deemed an original for all
purposes, as of the day and year first written above.

[Signature pages omitted.  Executed by the following parties:]

                               BANKBOSTON, N.A., individually and as Agent
                                                                          
                               THE ATLANTIC MONTHLY TRUST                 
                                                                          
                               MBZ-LEX TRUST                              
                                                                          
                               ZEE EM TRUST II                            
                                                                          
                               WP TRUST                                   
                                                                          
                               TRACER LANE TRUST                          
                                                                          
                               HAYDEN OFFICE TRUST                        
                                                                          
                               ELANDZEE TRUST                             
                                                                          
                               ZEE BEE TRUST II                           
                                                                          
                               ONE CAMBRIDGE CENTER TRUST                 
                                                                          
                               THREE CAMBRIDGE CENTER TRUST               
                                                                          
                               ELEVEN CAMBRIDGE CENTER TRUST              
                                                                          
                               FOURTEEN CAMBRIDGE CENTER TRUST             

                                      -11-

 
                               SCHOOL STREET ASSOCIATES LIMITED PARTNERSHIP

                               DEMOCRACY ASSOCIATES LIMITED PARTNERSHIP

                               MARYLAND 50 BUILDING I ASSOCIATES 
                                   LIMITED PARTNERSHIP

                               MARYLAND 50 BUILDING II ASSOCIATES 
                                   LIMITED PARTNERSHIP

                               MARYLAND 50 BUILDING III ASSOCIATES 
                                   LIMITED PARTNERSHIP

                               DOWNTOWN BOSTON PROPERTIES TRUST

                               TWO CAMBRIDGE CENTER TRUST

                               BOSTON PROPERTIES LIMITED PARTNERSHIP

                               BOSTON PROPERTIES, INC.,
                               as Guarantor

                                      -12-

 
                                                                    Exhibit 10.2
 

                SECOND AMENDMENT TO REVOLVING CREDIT AGREEMENT
                ----------------------------------------------

     This Second Amendment to Revolving Credit Agreement is made and entered
into as of the ____ day of July, 1997, by and among BOSTON PROPERTIES LIMITED
PARTNERSHIP ("BPLP") and the Wholly-owned Subsidiaries which are listed on
Schedule 1 to a certain Revolving Credit Agreement dated as of June 23, 1997,
having their principal place at 8 Arlington Street, Boston, Massachusetts 02116,
BANKBOSTON, N.A. (formerly known as The First National Bank of Boston)
("BankBoston"), a national banking association, having its principal place of
business at 100 Federal Street, Boston, Massachusetts 02110, certain other
lending institutions and BANKBOSTON, N.A., as agent for itself and each other
Bank.

     The following sets forth the background to this Second Amendment to
Revolving Credit Agreement:

     A.    The Borrower, BankBoston and the Agent entered into that certain
Revolving Credit Agreement dated as of June 23, 1997 (as amended, the "Credit
Agreement"); and

     B.    The Borrower, BankBoston and the Agent wish to amend the Credit
Agreement as hereinafter provided to reflect the addition of new Banks (as
defined in the Credit Agreement) to the Credit Agreement.

     NOW, THEREFORE, in consideration of One Dollar ($1.00) and other good and
valuable consideration by each of the parties hereto to the other of them in
hand this day paid, the receipt and sufficiency of which are hereby
acknowledged, it is agreed as follows:

     1.    Schedule 2 to the Credit Agreement is amended to read in its entirety
           ----------
     as set forth in Annex 1 hereto.
                     -------        

     WITNESS the execution hereof, under seal, in any number of counterpart
copies, each of which counterpart copy shall be deemed an original for all
purposes, as of the day and year first written above.

[Signature pages omitted.  Executed by the following parties:]

                                     BANKBOSTON, N.A., individually and as Agent

 
                                       CITIZENS BANK

                                       THE SAKURA BANK, LIMITED
 
                                       THE BANK OF NOVA SCOTIA

                                       FLEET NATIONAL BANK

                                       THE CHASE MANHATTAN BANK

                                       SUMMIT BANK

                                       PNC BANK NATIONAL ASSOCIATION

                                       DRESDNER BANK AG

                                       THE BANK OF NEW YORK
                                       CRESTAR BANK

                                       USTRUST

                                       KEY BANK NATIONAL ASSOCIATION

                                       THE ATLANTIC MONTHLY TRUST

                                       MBZ-LEX TRUST

                                       ZEE EM TRUST II

                                       WP TRUST

                                       TRACER LANE TRUST

                                       HAYDEN OFFICE TRUST

                                       ELANDZEE TRUST

                                       40-46 HARVARD STREET TRUST

 
                                       ZEE BEE TRUST II

                                       ONE CAMBRIDGE CENTER TRUST

                                       THREE CAMBRIDGE CENTER TRUST

                                       ELEVEN CAMBRIDGE CENTER TRUST

                                       FOURTEEN CAMBRIDGE CENTER TRUST

                                       SCHOOL STREET ASSOCIATES LIMITED 
                                       PARTNERSHIP

                                       DEMOCRACY ASSOCIATES LIMITED PARTNERSHIP

                                       MARYLAND 50 BUILDING I ASSOCIATES 
                                       LIMITED PARTNERSHIP

                                       MARYLAND 50 BUILDING II ASSOCIATES 
                                       LIMITED PARTNERSHIP

                                       MARYLAND 50 BUILDING III ASSOCIATES 
                                       LIMITED PARTNERSHIP

                                       DOWNTOWN BOSTON PROPERTIES TRUST

                                       TWO CAMBRIDGE CENTER TRUST

                                       BOSTON PROPERTIES LIMITED PARTNERSHIP

                                       BOSTON PROPERTIES, INC.,
                                       as Guarantor

 
                                                                         Annex 1
                                                                         -------

                                                Schedule 2
                                                ----------
                                        
Bank Commitment Amount Commitment Percentage - ---- ----------------- --------------------- BankBoston, N.A. $ 35,000,000.00 11.668% 100 Federal Street Boston, MA 02110 Citizens Bank 16,000,000.00 5.333% 55 Summer Street Boston, MA 02110 The Sakura Bank, Limited 16,000,000.00 5.333% 277 Park Avenue New York, NY 10172 The Bank of Nova Scotia 25,000,000.00 8.333% One Liberty Plaza New York, NY 10006 Fleet National Bank 30,000,000.00 10% 75 State Street Boston, MA 02109 The Chase Manhattan Bank 30,000,000.00 10% 380 Madison Avenue 10th Floor New York, NY 10017 Summit Bank 16,000,000.00 5.333% Commerce Center 1800 Chapel Avenue West Cherry Hill, NY 08002
PNC Bank, N.A. 27,500,000.00 9.167% One PNC Plaza Fifth Avenue and Wood Street Pittsburgh, PA 15265 Dresdner Bank AG 27,500,000.00 9.167% 75 Wall Street New York, NY 10005 The Bank of New York 20,000,000.00 6.667% One Wall Street, 1st Floor New York, NY 10015 Crestar Bank 16,000,000.00 5.333% 8243 Boone Boulevard 8th Floor Vienna, VA 22182 USTrust 16,000,000.00 5.333% 40 Court Street Boston, MA 02108 Key Bank 25,000,000.00 8.333% 127 Public Square Cleveland, OH 44114-1306 TOTAL $300,000,000.00 100%

 
                                                                  Exhibit 10.3


                 THIRD AMENDMENT TO REVOLVING CREDIT AGREEMENT
                 ---------------------------------------------


     This Third Amendment (this "Third Amendment") to Revolving Credit Agreement
is made and entered into as of the 11th day of September, 1997, by and among
BOSTON PROPERTIES LIMITED PARTNERSHIP ("BPLP") and the Wholly-owned Subsidiaries
which are listed on Schedule 1 to a certain Revolving Credit Agreement (as
amended, the "Credit Agreement") dated as of June 23, 1997, each having its
principal place at 8 Arlington Street, Boston, Massachusetts 02116, BANKBOSTON,
N.A. ("BankBoston"), a national banking association, having its principal place
of business at 100 Federal Street, Boston, Massachusetts 02110 and certain other
lending institutions (collectively with BankBoston, the "Banks") and BANKBOSTON,
N.A., as agent for itself and each other Bank.

     NOW, THEREFORE, in consideration of One Dollar ($1.00) and other good and
valuable consideration by each of the parties hereto, the receipt and
sufficiency of which are hereby acknowledged, it is agreed as follows:

     1.        Capitalized terms used but not defined herein shall have the
          respective meanings assigned to such terms in the Credit Agreement.

     2.        Section 1 of the Credit Agreement is amended by inserting,
          immediately before the definition of "Accountants" contained therein,
          the following new definitions:

               "280 Park Avenue Property".  That certain real property, and the
                ------------------------       
               improvements thereon, located at 280 Park Avenue, New York, New
               York.

               "875 Third Avenue Closing Date".  The date upon which the 
                -----------------------------   
               acquisition of the 875 Third Avenue is consummated by BPLP and
               BPLP has fulfilled the 875 Third Avenue Conditions.

                                      -1-

 
               "875 Third Avenue Conditions".  Collectively, (i) the acquisition
                ---------------------------      
               of the 875 Third Avenue Property is made by BPLP in accordance
               with the terms and conditions of this Agreement, and (ii) the
               Borrower has provided the Agent (with copies for each Bank) with
               a certificate dated as of the date the 875 Third Avenue Property
               is acquired (and after giving effect to such acquisition)
               containing the representations and warranties set forth in
               Section 5 of this Third Amendment, as updated to reflect the
               acquisition of the 875 Third Avenue Property.

               "875 Third Avenue Property".  That certain real property, and the
                -------------------------       
               improvements thereon, located at 875 Third Avenue, New York, New
               York.

     3.        The definition of "Fair Market Value of Real Estate Assets" is
          amended by inserting, at the end thereof, the following new sentence:

               "Notwithstanding the foregoing, (i) solely for the period
               commencing on September 11, 1997 and ending on February 1, 1999,
               and solely for purposes of calculating the covenant set forth in
               Section 10.1 hereof, the Fair Market Value of Real Estate Assets
               attributable to the 280 Park Avenue Property shall be an amount
               equal to $321,250,000, which is reflective of the purchase price
               paid by BPLP for the 280 Park Avenue Property, and (ii) solely
               for the period commencing on the 875 Third Avenue Closing Date
               and ending on February 1, 1999, and solely for purposes of
               calculating the covenant set forth in Section 10.2 hereof, the
               Fair Market Value of Real Estate Assets attributable to the 280
               Park Avenue Property shall be an amount equal to $321,250,000,
               which is reflective of the purchase price paid by BPLP for the
               280 Park Avenue Property.

     4.        Section 10.2 of the Credit Agreement is amended, solely for the
          period commencing on the 875 Third Avenue Closing Date and ending on
          June 30, 1998, by deleting the reference to "45%" contained in clause
          (i) thereof and by inserting in place thereof the following new
          reference: "50%".

                                      -2-

 
     5.        The Borrower hereby represents and warrants to you as follows:

          (a)  Representations in Credit Agreement.  Each of the representations
               -----------------------------------   
          and warranties made by or on behalf of the Borrower, the Guarantor or
          any of their respective Subsidiaries contained in the Credit
          Agreement, as amended through this Third Amendment, or any of the
          other Loan Documents, was true when made and is true on and as of the
          date hereof with the same full force and effect as if each of such
          representations and warranties had been made on the date hereof and in
          this Third Amendment, except (i) to the extent of changes resulting
          from transactions contemplated or not prohibited by the Credit
          Agreement or the other Loan Documents (including, without limitation,
          the fact that a Real Estate Asset may cease to be a Borrowing Base
          Property pursuant to the terms of the Credit Agreement) and changes
          occurring in the ordinary course of business, (ii) to the extent that
          such representations and warranties relate expressly to an earlier
          date and (iii) to the extent otherwise represented by the Borrower
          with respect to the representation set forth in Section 7.10.

          (b)  No Events of Default.  No Default or Event of Default exists on 
               --------------------   
          the date hereof (and after giving effect to the acquisition of the 280
          Park Avenue Property).

          (c)  Binding Effect of Documents.  This Third Amendment has been duly
               ---------------------------        
          executed and delivered to you by the Borrower and is in full force and
          effect as of the date hereof, and the agreements and obligations of
          the Borrower contained herein constitute legal, valid and binding
          obligations of the Borrower enforceable against the Borrower in
          accordance with their respective terms.

     6.        Provisions of General Application.
               --------------------------------- 

          (a)  No Other Changes.  Except as otherwise expressly provided by this
               ----------------   
          Third Amendment, all of the terms, conditions and provisions of the
          Credit Agreement and each of the other Loan Documents remain
          unaltered. The Credit Agreement and this Third Amendment shall be read
          and construed as one agreement.

                                      -3-

 
          (b)  Governing Law.  This Third Amendment is intended to take effect 
               -------------   
          as a sealed instrument and shall be deemed to be a contract under the
          laws of the Commonwealth of Massachusetts. This Third Amendment and
          the rights and obligations of each of the parties hereto shall be
          governed by and interpreted and determined in accordance with the laws
          of the Commonwealth of Massachusetts.

          (c)  Binding Effect; Assignment.  This Third Amendment shall be 
               --------------------------        
          binding upon and inure to the benefit of each of the parties hereto
          and their respective successors in title and assigns.

          (d)  Counterparts.  This Third Amendment may be executed in any number
               ------------        
          of counterparts, but all such counterparts shall together constitute
          but one and the same agreement. In making proof of this Third
          Amendment, it shall not be necessary to produce or account for more
          than one counterpart thereof signed by each of the parties hereto.

                                      -4-

 
          (e)  Conflict with Other Agreements.  If any of the terms of this 
               ------------------------------   
          Third Amendment shall conflict in any respect with any of the terms of
          any of the Credit Agreement or any other Loan Document, the terms of
          this Third Amendment shall be controlling.

     WITNESS the execution hereof, under seal, as of the day and year first
written above.

[Signature pages omitted.  Executed by the following parties:]

                                   BANKBOSTON, N.A., individually and as Agent

                                   CITIZENS BANK

                                   THE SAKURA BANK, LIMITED

                                   THE BANK OF NOVA SCOTIA

                                   FLEET NATIONAL BANK

                                   THE CHASE MANHATTAN BANK

                                   SUMMIT BANK

                                   PNC BANK NATIONAL ASSOCIATION

                                   DRESDNER BANK AG

                                   THE BANK OF NEW YORK
                                   CRESTAR BANK

                                   USTRUST

                                      -5-

 
                                   KEY BANK NATIONAL ASSOCIATION

                                   THE ATLANTIC MONTHLY TRUST

                                   MBZ-LEX TRUST

                                   ZEE EM TRUST II

                                   WP TRUST

                                   TRACER LANE TRUST

                                   HAYDEN OFFICE TRUST

                                   ELANDZEE TRUST

                                   ZEE BEE TRUST II

                                   ONE CAMBRIDGE CENTER TRUST

                                   THREE CAMBRIDGE CENTER TRUST

                                   ELEVEN CAMBRIDGE CENTER TRUST

                                   FOURTEEN CAMBRIDGE CENTER TRUST

                                   SCHOOL STREET ASSOCIATES LIMITED 
                                   PARTNERSHIP

                                   DEMOCRACY ASSOCIATES LIMITED 
                                   PARTNERSHIP

                                      -6-

 
                                   MARYLAND 50 BUILDING I ASSOCIATES 
                                   LIMITED PARTNERSHIP

                                   MARYLAND 50 BUILDING II ASSOCIATES 
                                   LIMITED PARTNERSHIP

                                   MARYLAND 50 BUILDING III ASSOCIATES 
                                   LIMITED PARTNERSHIP

                                   DOWNTOWN BOSTON PROPERTIES TRUST

                                   TWO CAMBRIDGE CENTER TRUST

                                   BOSTON PROPERTIES LIMITED 
                                   PARTNERSHIP

                                   BOSTON PROPERTIES, INC.,
                                   as Guarantor

                                      -7-

 
                                                                    Exhibit 10.4
 
                FOURTH AMENDMENT TO REVOLVING CREDIT AGREEMENT
                ----------------------------------------------

     This Fourth Amendment (this "Fourth Amendment") to Revolving Credit
Agreement is made and entered into as of the 31st day of October, 1997, by and
among BOSTON PROPERTIES LIMITED PARTNERSHIP ("BPLP") and the Wholly-owned
Subsidiaries which are listed on Schedule 1 to a certain Revolving Credit
Agreement (as amended, the "Credit Agreement") dated as of June 23, 1997, each
having its principal place at 8 Arlington Street, Boston, Massachusetts 02116,
BANKBOSTON, N.A. ("BankBoston"), a national banking association, having its
principal place of business at 100 Federal Street, Boston, Massachusetts 02110
and certain other lending institutions (collectively with BankBoston, the
"Banks") and BANKBOSTON, N.A., as agent for itself and each other Bank.

     NOW, THEREFORE, in consideration of One Dollar ($1.00) and other good and
valuable consideration by each of the parties hereto, the receipt and
sufficiency of which are hereby acknowledged, it is agreed as follows:

     1.       Capitalized terms used but not defined herein shall have the
          respective meanings assigned to such terms in the Credit Agreement.

     2.       The definition of "Applicable Margin" is amended, solely for the
          period commencing on the 875 Third Avenue Closing Date and ending on
          April 30, 1998, by adding the following to the end of the existing
          definition of "Applicable Margin":

                   "Notwithstanding the foregoing, the Applicable Margin shall
             be equal to the percentage determined for the following periods in
             accordance with the following:

                   (i) For the period from the 875 Third Avenue Closing Date
             through January 31, 1998, the Applicable Margin will equal 1.25%.

                                      -1-

 
                   (ii) For the period from February 1, 1998 through April 30,
             1998 the Applicable Margin will equal 1.40%."

     3.        Section 10.1 of the Credit Agreement is amended, solely for the
          period commencing on the 875 Third Avenue Closing Date and ending on
          April 30, 1998, by deleting the reference to "55%" and by inserting in
          place thereof the following new reference: "65%".

     4.        Section 10.2 of the Credit Agreement is amended, solely for the
          period commencing on the 875 Third Avenue Closing Date and ending on
          April 30, 1998, by deleting the reference to "50%" contained in clause
          (i) thereof (as amended in Paragraph 4 of the Third Amendment to
          Revolving Credit Agreement dated September 11, 1997) and by inserting
          in place thereof the following new reference: "55%."

     5.        The Borrower hereby represents and warrants to you as follows:

          (a) Representations in Credit Agreement.  Each of the representations 
              -----------------------------------   
          and warranties made by or on behalf of the Borrower, the Guarantor or
          any of their respective Subsidiaries contained in the Credit
          Agreement, as amended through this Fourth Amendment, or any of the
          other Loan Documents, was true when made and is true on and as of the
          date hereof with the same full force and effect as if each of such
          representations and warranties had been made on the date hereof and in
          this Fourth Amendment, except (i) to the extent of changes resulting
          from transactions contemplated or not prohibited by the Credit
          Agreement or the other Loan Documents (including, without limitation,
          the fact that a Real Estate Asset may cease to be a Borrowing Base
          Property pursuant to the terms of the Credit Agreement) and changes
          occurring in the ordinary course of business, (ii) to the extent that
          such representations and warranties relate expressly to an earlier
          date and (iii) to the extent otherwise represented by the Borrower
          with respect to the representation set forth in Section 7.10.

          (b) No Events of Default.  No Default or Event of Default exists on 
              -------------------- 
          the date hereof.

          (c) Binding Effect of Documents.  This Fourth Amendment has been duly 
              --------------------------- 
          executed and delivered to you by the Borrower and is in full force and

                                      -2-

 
          effect as of the date hereof, and the agreements and obligations of
          the Borrower contained herein constitute legal, valid and binding
          obligations of the Borrower enforceable against the Borrower in
          accordance with their respective terms.

     6.        Provisions of General Application.
               --------------------------------- 

          (a) No Other Changes.  Except as otherwise expressly provided by this 
              ----------------  
          Fourth Amendment, all of the terms, conditions and provisions of the
          Credit Agreement and each of the other Loan Documents remain
          unaltered. The Credit Agreement and this Fourth Amendment shall be
          read and construed as one agreement.

          (b) Governing Law.  This Fourth Amendment is intended to take effect 
              -------------     
          as a sealed instrument and shall be deemed to be a contract under the
          laws of the Commonwealth of Massachusetts. This Fourth Amendment and
          the rights and obligations of each of the parties hereto shall be
          governed by and interpreted and determined in accordance with the laws
          of the Commonwealth of Massachusetts.

          (c) Binding Effect; Assignment.  This Fourth Amendment shall be 
              --------------------------
          binding upon and inure to the benefit of each of the parties hereto
          and their respective successors in title and assigns.

          (d) Counterparts.  This Fourth Amendment may be executed in any number
              ------------
          of counterparts, but all such counterparts shall together constitute
          but one and the same agreement. In making proof of this Fourth
          Amendment, it shall not be necessary to produce or account for more
          than one counterpart thereof signed by each of the parties hereto.

          (e) Conflict with Other Agreements.  If any of the terms of this 
              ------------------------------ 
          Fourth Amendment shall conflict in any respect with any of the terms
          of any of the Credit Agreement or any other Loan Document, the terms
          of this Fourth Amendment shall be controlling.

                                      -3-

 
     WITNESS the execution hereof, under seal, as of the day and year first
written above.

[Signature pages omitted.  Executed by the following parties:]

                                       BANKBOSTON, N.A.,
                                       individually and as Lead Agent

                                       CITIZENS BANK

                                       THE SAKURA BANK, LIMITED

                                       THE BANK OF NOVA SCOTIA

                                       FLEET NATIONAL BANK, individually
                                       and as Documentation Agent

                                       THE CHASE MANHATTAN BANK, individually
                                       and as Syndication Agent

                                       SUMMIT BANK


                                       PNC BANK NATIONAL ASSOCIATION, 
                                       individually and as a Co-Agent

                                       DRESDNER BANK AG NEW YORK BRANCH AND 
                                       GRAND CAYMAN BRANCH, individually and 
                                       as a Co-Agent

                                       THE BANK OF NEW YORK
                                       CRESTAR BANK

                                       USTRUST

                                      -4-

 
                                       KEY BANK NATIONAL ASSOCIATION
                                                                    
                                       THE ATLANTIC MONTHLY TRUST   
                                                                    
                                       MBZ-LEX TRUST                
                                                                    
                                       ZEE EM TRUST II              
                                                                    
                                       WP TRUST                     
                                                                    
                                       TRACER LANE TRUST            
                                                                    
                                       HAYDEN OFFICE TRUST          
                                                                    
                                       ELANDZEE TRUST               
                                                                    
                                       ZEE BEE TRUST II             
                                                                    
                                       ONE CAMBRIDGE CENTER TRUST   
                                                                    
                                       THREE CAMBRIDGE CENTER TRUST 
                                                                    
                                       ELEVEN CAMBRIDGE CENTER TRUST
                                                                    
                                       FOURTEEN CAMBRIDGE CENTER TRUST 
                                                                       
                                       SCHOOL STREET ASSOCIATES LIMITED 
                                       PARTNERSHIP               
                                       
                                       DEMOCRACY ASSOCIATES LIMITED 
                                       PARTNERSHIP                   

                                      -5-

 
                                       MARYLAND 50 BUILDING I ASSOCIATES 
                                       LIMITED PARTNERSHIP      
                                       
                                       MARYLAND 50 BUILDING II ASSOCIATES 
                                       LIMITED PARTNERSHIP     
                                       
                                       MARYLAND 50 BUILDING III ASSOCIATES 
                                       LIMITED PARTNERSHIP    
                                       
                                       DOWNTOWN BOSTON PROPERTIES TRUST 
                                                                        
                                       TWO CAMBRIDGE CENTER TRUST       
                                                                        
                                       BOSTON PROPERTIES LIMITED PARTNERSHIP 
                                                                             
                                       BOSTON PROPERTIES, INC.,              
                                       as Guarantor                          

                                      -6-


                                                                    EXHIBIT 23.1
                      CONSENT OF INDEPENDENT ACCOUNTANTS

We consent to the inclusion in this Report on Form 8-K of Boston Properties, 
Inc. dated November 26, 1997 of our report dated October 17, 1997 on our audit 
of the Statement of Revenue Over Certain Operating Expenses of 875 Third Avenue 
for the year ended December 31, 1996.

Boston, Massachusetts                        /s/ Coopers & Lybrand L.L.P.
November 26, 1997