UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION


                              WASHINGTON, DC 20549


                                    FORM 8-K


                Current Report Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934


       Date of Report (Date of earliest event reported) January 10, 2006


                            PS BUSINESS PARKS, INC..
             (Exact name of registrant as specified in its charter)



         California                   1-10709                  95-4300881
         ----------                   -------                  ----------
(State or Other Jurisdiction  (Commission File Number)      (I.R.S. Employer
     Of Incorporation)                                   Identification Number)


               701 Western Avenue, Glendale, California 91201-2397
               ---------------------------------------------------
               (Address of principal executive offices) (Zip Code)


       Registrant's telephone number, including area code: (818) 244-8080
                                                           --------------


                                       N/A
          (Former name or former address, if changed since last report)


( _ )    Written  communications  pursuant to Rule 425 under the  Securities
         Act (17 CFR 230.425)

( _ )    Soliciting  material pursuant to Rule 14a-12 under the Exchange Act
         (17 CFR 240.14a-12)

( _ )    Pre-commencement communications pursuant to rule 14d-2(b) under the
         Exchange Act (17 CFR 240.14d-2(b))

( _ )    Pre-commencement communications pursuant to rule 13e-4(c) under the
         Exchange Act (17 CFR 240.13e-4(c))





ITEM 7.01     REGULATION FD DISCLOSURE

On Janaury 10,  2006,  the Company  issued a press  release  announcing  that it
intends to release its fourth  quarter 2005 earnings after the close of business
on Tuesday,  February  21, 2006.  The  information  in this Form 8-K  (including
Exhibit  99.1)  shall not be deemed  "filed"  for  purposes of Section 18 of the
Securities Exchange Act of 1934 (the "Exchange Act") or otherwise subject to the
liabilities of that section, nor shall it be deemed incorporated by reference in
any filing  under the  Securities  Act of 1933 or the  Exchange  Act,  except as
expressly set forth by specific reference in such filing.

ITEM 9.01.    FINANCIAL STATEMENTS AND EXHIBITS

(c)      Exhibits

         The  following  exhibit  relating  to Item  7.01  shall be deemed to be
furnished and not filed:

         99.1 Press Release dated Janaury 10, 2006.





                                   SIGNATURES





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 hereunto duly authorized.


PS BUSINESS PARKS, INC.


Dated: January 10, 2006
By: /s/ Edward A. Stokx
    ------------------------
     Edward A. Stokx
     Chief Financial Officer