Item 7.01. Regulation FD Disclosure

PS Business Parks announces it intends to release second quarter earnings after the close of business on Wednesday, August 5, 2009 and host the quarterly conference call on Thursday, August 6, 2009 at 10:00am PDT. 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 a filing.