To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located. Complete a homestead declaration form.How do I fill this out? 0117). How to Apply for the Homeowners'. Exemption. Complete form BOE-266, Claim for Homeowners'. An Application for Exemption from Real Estate Taxation form is available on the tax forms page. Other Exempt Property. Buy a declared homestead form from an office-supply store, or download a form from the Registrar-Recorder's website.