Item 8.01 Other Events.

On September 5, 2012, PS Business Parks, Inc. announced that it is calling for redemption on October 9, 2012 all outstanding depositary shares representing interests in its 6.70% Cumulative Preferred Stock, Series P (NYSE:PSBPrP) at $25 per share plus accrued dividends from October 1, 2012 through the date of redemption. The aggregate redemption amount, before payment of accrued dividends, to be paid to all holders of the depositary shares is $132,250,000. A copy of the press release announcing the redemption is attached as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit 99.1-Press Release dated September 5, 2012

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