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 * ZIMAN RICHARD S   2. Issuer Name and Ticker or Trading Symbol ARDEN REALTY INC [ARI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chairman of the Board/CEO (Last) (First) (Middle) 11601 WILSHIRE BOULEVARD, 4TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 12/16/2004 (Street) LOS ANGELES, CA 90025-1740 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 12/16/2004   M   125,000 A $ 19.125 1,034,446 D (1)   Common stock 12/16/2004   S   125,000 D (2) 909,446 D (1)

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

Stock option (right to buy)

$ 19.125

12/16/2004

M

125,000

12/03/2000(3)

12/03/2009

common stock

125,000

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ZIMAN RICHARD S 11601 WILSHIRE BOULEVARD 4TH FLOOR LOS ANGELES, CA 90025-1740	X		Chairman of the Board/CEO

Signatures

/s/ David A. Swartz David A. Swartz POA for Richard S. Ziman		12/17/2004
**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 addition, 2,000 shares are held indirectly by the reporting person by a limited partnership
(2)	1,400 shares sold at $37.25; 400 shares sold at $37.24; 200 shares sold at $37.22; 13,100 shares sold at $37.20; 500 shares sold at $37.17; 1,500 shares sold at $37.16; 100 shares sold at $37.06; 3,000 shares sold at $37.01; 14,000 shares sold at $37.00; 1,500 shares sold at $36.99; 600 shares sold at $36.98; 100 shares sold at $36.95; 600 shares sold at $36.94; 800 shares sold at $36.92; 300 shares sold at $36.91; 400 shares sold at $36.90; 500 shares sold at $36.87; 1,600 shares sold at $36.86; 200 shares sold at $36.85; 2,200 shares sold at $36.82; 82,000 shares sold at $36.80;
(3)	Option vests in two (2) equal annual installments commmencing December 3, 2000.

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