Except as otherwise provided in this article, any petition made after the commencement or completion of arbitration shall be filed in a court having jurisdiction in the county where the arbitration is being or has been held, or, if not held exclusively in any one county of this state, or if held outside of this state, then the petition shall be filed as provided in Section 1292.
Source:
Section 1292.2, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CCP§ionNum=1292.2..