California Code, Welfare and Institutions Code - WIC § 11020

(a) Where a recipient under a categorical aid program other than CalWORKs has received aid in good faith but in fact owned excess property, he or she shall be considered to have been ineligible for aid during the period for which any excess property would have supported him or her at the rate of the aid granted to him or her.  Under these circumstances, the recipient or his or her estate shall repay the aid he or she received during this period of ineligibility.

(b) With respect to recipients under Chapter 3 (commencing with Section 12000) of this part, overpayments shall be collected by the federal government pursuant to federal law.

(c) Where a CalWORKs recipient has received aid in good faith, but in fact owned excess property, the recipient shall have an overpayment equal to the lesser of the amount of the excess property or the aid received during the period the recipient owned the excess property and the grant was not accurately determined under the semiannual reporting, prospective budgeting system due to the excess property.