California Code, Code of Civil Procedure - CCP § 685.080

(a) The judgment creditor may claim costs authorized by Section 685.040 by noticed motion. The motion shall be made before the judgment is satisfied in full, but not later than two years after the costs have been incurred. The costs claimed under this section may include, but are not limited to, costs that may be claimed under Section 685.070 and costs incurred but not approved by the court or referee in a proceeding under Chapter 6 (commencing with Section 708.010) of Division 2.

(b) The notice of motion shall describe the costs claimed, shall state their amount, and shall be supported by an affidavit of a person who has knowledge of the facts stating that to the person's best knowledge and belief the costs are correct, are reasonable and necessary, and have not been satisfied. The notice of motion shall be served on the judgment debtor. Service shall be made personally or by mail.

(c) The court shall make an order allowing or disallowing the costs to the extent justified under the circumstances of the case.