The claim form, BOE-266, Claim for Homeowners' Property Tax Exemption, is available from the county assessor. Complete a homestead declaration form.Sign your declaration in front of a notary. 0117). How to Apply for the Homeowners'. Exemption. Complete form BOE-266, Claim for Homeowners'. Explore the nuances of New York's Homestead Exexemption. To apply for a homestead exemption, you will need to provide documentation that proves you meet the eligibility criteria. You must complete a Veterans Exemption Application and show proof that your previous residence was granted the exemption. Homestead Exemption Types. Requirements; Eligible Properties; Amount of Exemption ; Abandonment of Homestead.