No information is available for this page. Determine your home's current market value.To qualify for Homestead Exemption (F. Exemption applications must be filed with your local assessor's office. See our Municipal Profiles for your local assessor's mailing address. It is not available in New. York City, or in Nassau County except for villages and, for certain purposes, the cities. Here are some of the important tax exemptions you should know about if you own a home in Nassau County. For further information or to obtain an application call 516-571-1500 or visit the Nassau County Assessor's website. LINK to ALL Exemptions offered in the Town of Nassau INCLUDING ALL NEW STAR applications.