To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located. Complete a homestead declaration form.0117). How to Apply for the Homeowners'. Exemption. Complete form BOE-266, Claim for Homeowners'. Before you use this form, fill in all blanks, and make whatever changes are appropriate and necessary to your particular transaction. Consult a lawyer if. An applicant must meet all qualifications in the assessment year to receive property tax relief in the tax year. Qualifications. Standardized forms are available at the Assessors' Office and should be filled out and returned to the Assessors.