To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located. This local option prevents any large shift of the property tax burden to the residential class of property owners after a revaluation.Complete form BOE-266, Claim for Homeowners'. Property Tax Exemption. Claim for Homeowners' Property Tax Exemption, BOE-266, DOWNLOAD. The Homestead Exemption reduces the taxable portion of your property assessment if you own your primary residence in Philadelphia. Free Tax Help Bay Area is committed to serving clients with ITINs and offers CAA services at many locations.