FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * NORVILLE E MITCHELL   2. Issuer Name and Ticker or Trading Symbol BOSTON PROPERTIES INC [BXP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP, COO (Last) (First) (Middle) C/O BOSTON PROPERTIES, INC., 800 BOYLSTON STREET 3. Date of Earliest Transaction (Month/Day/Year) 05/03/2010 (Street) BOSTON, MA 02199 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, par value $.01 05/03/2010   M   25,976 A $ 35.26 (1) (2) 42,997.003 (3) D   Common Stock, par value $.01 05/03/2010   S   25,976 D $ 80.8582 (4) 17,021.0033 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Employee Stock Option (right to buy)

$ 35.26 (1) (2)

05/03/2010

M

25,976

(5)

01/18/2011

Common Stock

25,976 (1) (2)

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
NORVILLE E MITCHELL C/O BOSTON PROPERTIES, INC. 800 BOYLSTON STREET BOSTON, MA 02199			EVP, COO

Signatures

/s/ Kelli A. DiLuglio, Attorney-in-Fact		05/05/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	In (1) January 2007, the issuer paid a special dividend of $5.40 per share of common stock to all stockholders of record as of the close of business on December 29, 2006 and (2) January 2008, the issuer paid a special dividend of $5.98 per share of common stock to all stockholders of record as of the close of business on December 31, 2007. In connection with each of these special dividends, the issuer's Board of Directors adjusted all options that were awarded, but not exercised, prior to the ex-dividend date for each special dividend to account for the effect of each special dividend. The number of shares subject to each such option was increased and the exercise price correspondingly decreased such that each option had the same fair value to the holder before and after giving effect to the payment of each special dividend.
(2)	Pursuant to the adjustments described in Footnote 1, the number of shares underlying Mr. Norville's options increased by 1,169 from 23,282 to 24,451 in December 2006 and by 1,525 from 24,451 to 25,976 in December 2007 and the per share exercise price was correspondingly decreased.
(3)	Includes 381.6729 shares which the Reporting Person acquired in July 2008, January 2009, July 2009 and January 2010 pursuant to the Boston Properties, Inc. 1999 Non-Qualified Employee Stock Purchase Plan.
(4)	Represents the weighted average sale price. These shares were sold in multiple transactions at sale prices ranging from $80.60 to $81.22, inclusive. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.
(5)	The options vested in three equal annual installments beginning on January 18, 2002.

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