Cal. Civ. Proc. Code § 703.090

If a judgment creditor has failed to oppose a claim of exemption within the time allowed by Section 703.550 or if property has been determined by a court to be exempt, and the judgment creditor thereafter levies upon or otherwise seeks to apply the property toward the satisfaction of the same money judgment, the judgment creditor is not entitled to recover the subsequent costs of collection unless the property is applied to satisfaction of the judgment.