(3). I own the following interest in the above declared homestead: (4). To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located.A homestead exemption is a method for homeowners to protect a certain amount of equity in their home. Complete a homestead declaration form. After completing the form, you must file it with the County Recorder's office in the county where the property is located. RESOURCES. Cal. 0117). How to Apply for the Homeowners'. Exemption. Complete form BOE-266, Claim for Homeowners'. I own the following interest in the above-declared homestead: 4. The above-declared homestead is my principal dwelling. These forms are from the San Diego County Recorder's website.