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) October 31, 2005


                            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 5.02  DEPARTURE  OF  DIRECTORS  OR  PRINCIPAL  OFFICERS;  ELECTION OF
           DIRECTORS; APPOINTMENT OF PRINCIPAL OFFICERS

           (d)  Election of New  Director.  As  previously  announced on May 18,
2005, the Board of PS Business Parks, Inc. (the "Company") elected Robert Wesley
Burns to the Board of  Directors.  A copy of the press  release  announcing  Mr.
Burns'  election was attached to the  Company's  Form 8-K dated May 18, 2005. At
the time of his election, Mr. Burns was not named to any Board committees. As of
the October 31, 2005 meeting of the  Company's  Nominating/Corporate  Governance
Committee  of  the  Board,   Mr.  Burns  was   appointed  as  a  member  of  the
Nominating/Corporate Governance Committee.

ITEM 5.04  TEMPORARY  SUSPENSION  OF TRADING UNDER  REGISTRANT'S  EMPLOYEE
           BENEFIT PLANS

           On October 31, 2005, the Company notified its directors and executive
officers that a blackout  period with respect to its 401K Plan will be in effect
beginning  December 1, 2005. The blackout  period is expected to end the week of
December  19,  2005.  The  Company  provided  the  notice to its  directors  and
executive  officers in accordance with Section 3.06(a) of the Sarbanes-Oxley Act
of 2002 and Rule 104 of Regulation BTR.

           A copy of the notice is attached as Exhibit 99.1 to this Form 8-K.

ITEM 9.01  FINANCIAL STATEMENTS AND EXHIBITS 

(c)        Exhibits

           The  following  exhibit  relating  to Item 5.04 shall be deemed to be
furnished and not filed:

           99.1 Notice of Blackout Period to Directors and Executive Officers of
PS Business Parks, Inc. dated October 31, 2005



                                  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: October 31, 2005
By: /s/ Edward A. Stokx
    ------------------------
     Edward A. Stokx
     Chief Financial Officer