No information is available for this page. Exemption applications must be filed with your local assessor's office.See our Municipal Profiles for your local assessor's mailing address. The Homestead Exemption law under § 5206 in New York State protects a debtor's primary residence from becoming collateral against monetary judgments. To qualify for Homestead Exemption (F. Here are some of the important tax exemptions you should know about if you own a home in Nassau County. To receive an application, write to the Nassau County Department of Assessment at 240 Old Country Road, Mineola, NY 11501, or call (516) 571-1500. Real Property Forms. A Village tax exemption does not apply to taxes based on the Nassau County Assessment Roll. Surviving spouse of veteran who died while on active duty.