California Business And Professions Code Section 2019
The office of the board shall be in the City of Sacramento. Suboffices may be established in the Cities of Los Angeles, San Diego, and San Francisco or the environs of such cities. Legal proceedings against the board shall be instituted in any one of these four cities. The board may also establish other suboffices as it may deem necessary and such records as may be necessary may be transferred temporarily to any suboffices.