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 * Carr Oliver T III   2. Issuer Name and Ticker or Trading Symbol Columbia Equity Trust, Inc. [COE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President/ CEO/Chairman (Last) (First) (Middle) 1750 H STREET, N.W. SUITE 500 3. Date of Earliest Transaction (Month/Day/Year) 03/01/2007 (Street) WASHINGTON, DC 20006 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 $.001 per share 03/01/2007   D   3,250 D $ 19.5 (1) 0 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

Units (2)

$ 0

03/01/2007

D

102,201 (3)

07/05/2006(2)

(4)

Common Stock

102,201

(5)

0

I

Held by Carr Capital Corporation

Units (2)

$ 0

03/01/2007

D

127,655 (6)

07/05/2006(2)

(4)

Common Stock

127,655

$ 19.5 (1)

2,243

I

Held by Carr Capital Real Estate Investments, LLC

Units (2)

$ 0

03/01/2007

D

2,243 (6)

07/05/2006(2)

(4)

Common Stock

2,243

(7)

0

I

Held by Carr Capital Real Estate Investments, LLC

LTIP Units (8)

$ 0

03/01/2007

D

35,000

07/05/2006(2)

(4)

Units

35,000

(9)

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Carr Oliver T III 1750 H STREET, N.W. SUITE 500 WASHINGTON, DC 20006	X		President/ CEO/Chairman

Signatures

/s/ John A. Schissel Attorney-in-Fact		03/05/2007
**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)	Disposed of for $19.50 in cash pursuant to a merger agreement.
(2)	Units of limited partnership interest of Columbia Equity, LP ("Units") may be redeemed for shares of the issuer's common stock on a one-for-one basis or, at the election of the issuer, cash equal to the fair market value of such shares, beginning July 5, 2006.
(3)	Amount of securities in this column represents reporting person's pro rata ownership interest in CCC. The reporting person disclaims beneficial ownership of the remaining balance of Units held by CCC.
(4)	Expire upon dissolution or expiration of the term of Columbia Equity, LP, whichever occurs first.
(5)	Disposed of pursuant to merger agreement between issuer and SSPF/CET Operating Company, LLC ("Acquiror") in exchange for 58,021 common units of membership interest of Acquiror ("Acquiror Common Units") and 44,173 preferred units of membership interest of Acquiror ("Acquiror Preferred Units"), each having a value of $19.50 per unit on the effective date of the merger.
(6)	CCREI is wholly owned by CCC. Aggregate amount of securities in these columns represent reporting person's pro rata ownership interest in CCC. Reporting person disclaims beneficial ownership of remaining balance of Units held by CCC.
(7)	Disposed of pursuant to merger agreement in exchange for 2,243 Acquiror Preferred Units.
(8)	LTIP Units may be converted into Units on a one-for-one basis.
(9)	Disposed of pursuant to merger agreement in exchange for 8,750 Acquiror Common Units and 26,250 Acquiror Preferred Units, each having a value of $19.50 per unit on the effective dae of the merger.

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