Cal. Rev. & Tax. Code § 4674

Any excess in the proceeds deposited in the delinquent tax sale trust fund remaining after satisfaction of the amounts distributed under Sections 4672, 4672.1, 4672.2, 4673, and 4673.1 shall be retained in the fund on account of, and may be claimed by parties of interest in the property as provided in, Section 4675. At the expiration of the period specified in subdivision (e) of Section 4675, any excess proceeds not claimed under Section 4675 may be transferred to the county general fund.