General Information. The secured property tax bills are usually mailed out in October of each year.Download PDF BOE-266 REV. Download PDF BOE-571-L REV. Everything you need to know about Contra Costa Property Tax, including rates, laws, and ways to reduce your bills. Currently, the California homestead exemption is automatic, meaning that a homestead declaration does not need to be filed with the county clerk. However, the automatic exemption only protects the homeowner's equity in the property under a forced sale due to the request of a creditor. Form BOE-571-L on CAA e-Forms Service Center. AEA would reach out to their property managers to offer BayREN and MCE energy efficiency services, while. The law requires that the personal representative file this statement with the Assessor in each county where the decedent owned property at the time of death.