SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 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) November 20, 2001


                             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)





ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

(c)      EXHIBITS
         --------
         99.1     Press release dated November 20, 2001.

ITEM 9.  REGULATION FD DISCLOSURE

         On November 20, 2001, the Company issued a press release announcing the
         acquisition  of a business  park,  the formation of a joint venture and
         the  disposition  of a  property.  The Company is  attaching  the press
         release  as  Exhibit  99.1 to this  Current  Report  on Form  8-K.  The
         information  included  pursuant to this Item 9 (including the exhibits)
         shall not be deemed to be  incorporated  by  reference  into any filing
         made by the Company  pursuant to the Securities Act of 1933, other than
         to the extent that such filing  incorporates by reference any or all of
         such information by express reference thereto.





                                   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.


Date:  November 20, 2001                                   By: /S/ JACK CORRIGAN
                                                               -----------------
                                                                   Jack Corrigan
                                      Vice President and Chief Financial Officer