California Civil Procedure Code
Section 1297.201
The parties may agree on the place of arbitration.
Section 1297.202
Failing any agreement referred to in Section 1297.201, the place of arbitration shall be determined by the arbitral tribunal having regard to the circumstances of the case, including the convenience of the parties.
Section 1297.203
Notwithstanding Section 1297.201, the arbitral tribunal may, unless otherwise agreed by the parties, meet at any place it considers appropriate for consultation among its members, for hearing witnesses, experts, or the parties, or for inspection of documents, goods, or other property.