(3). I own the following interest in the above declared homestead: (4). Complete a homestead declaration form.First of all, research the impact of a Homestead Declaration and make sure it's right for you. For more information click here. After completing the form, you must file it with the County Recorder's office in the county where the property is located. RESOURCES. Cal. These forms are from the San Diego County Recorder's website. To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located. To declare a Homestead, you can file your completed Homestead Declaration with the County Recorder in the county where the property is located. The County Assessor administers the homeowner tax exemption program, which allows homeowners to claim a. Complete form BOE-266, Claim for Homeowners'.