Two-hundred attorney real estate firm Allen Matkins Leck Gamble Mallory & Natsis plans to open a Walnut Creek, Calif., office in May, which will be its second location in the San Francisco Bay Area.

The firm’s other five offices are in Southern California, including Los Angeles and San Diego. Partner John Gamble said the firm signed a lease Tuesday for a 6,600-square-foot office that can accommodate up to 11 lawyers.