Buy a declared homestead form from an office-supply store, or download a form from the Registrar-Recorder's website. Download PDF BOE-266 REV.Simply put, a homestead exemption protects your residence's equity from creditors. To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located. If you qualify all you have to do is file an application with your local county office. Contact the Assessor at - (909) 387-8307. You may also click here to access the "Request for Change of Address" form on the Assessor website. Complete a Declaration of Homestead form and have your signature notarized. Homeowners can find the form at any office supply store or downloaded here. A new owner will automatically receive an exemption claim form in the mail and there is no cost to file.