To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located. Complete form BOE-266, Claim for Homeowners'.Property Tax Exemption. Simply put, a homestead exemption protects your residence's equity from creditors. Under California law, a homeowner is entitled to the protection of a certain amount of equity in the home that is his or her principal residence (home). For more information on filing visit the Los Angeles County Registrar Recorder's Homestead Exemption page for forms and filing requirements. Los Angeles, CA 90012. Phone: (888) 807-2111. A homeowner's exemption is just a property tax exemption. New owners automatically receive an exemption claim form in the mail; there is no cost to file for the exemption.