Property Assessment

The Nassau County Department of Assessment establishes values for land and improvements as the basis for property taxes.


Nassau County Department of Assessment (516) 571-1500General Information Provides information from the Department of Assessment on rules, procedures, exemptions and general information.

Index of Services
Includes frequently asked questions and detailed information on tax exemptions.

Look Up Property Assessment

Information Line for Assessment and Tax Information (516) 571-1500

How Is My Tax Determined?

Find Your Property Tax Classification

Property Tax Exemptions 
Includes information on veterans, senior citizens, and new construction exemptions.

How Do I Appeal My Property Assessment?

Information on Obtaining Public Property Information

New York State School Tax Relief (STAR) Exemption

Important DatesGlossary


Village of East Rockaway Clerk's Office

Town of Hempstead Receiver of Taxes

Village of Hempstead Tax Assessor

Village of New Hyde Park

Town of North Hempstead

Village of Lake Success