This is a property tax savings program for those aged 55 or older who are selling their home and buying another home. Complete a homestead declaration form.Sign your declaration in front of a notary. 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. These forms are from the San Diego County Recorder's website. For more information click here. Seniors in San Diego can further benefit from the Homestead Exemption, which provides additional property tax savings. The new law eliminates many qualifying conditions and provides a homestead exemption to anyone with a principal residence.