Cal. Code of Civil Procedure § 1273.020

(a) Notwithstanding Sections 1283.2 and 1284.2, the party acquiring the property shall pay all of the expenses and fees of the neutral arbitrator and the statutory fees and mileage of all witnesses subpoenaed in the arbitration, together with other expenses of the arbitration incurred or approved by the neutral arbitrator, not including attorney’s fees or expert witness fees or other expenses incurred by other parties for their own benefit. (b) An agreement authorized by this chapter may require that the party acquiring the property pay reasonable attorney’s fees or expert witness fees, or both, to any other party to the arbitration. If the agreement requires the payment of such fees, the amount of the fees is a matter to be determined in the arbitration proceeding unless the agreement prescribes otherwise. (c) The party acquiring the property may pay the expenses and fees referred to in subdivisions (a) and (b) from funds available for the acquisition of the property or other funds available for the purpose.