Suffolk County Assessor Office

Find Suffolk County New York assessor, assessment, auditor's, and appraiser's offices, revenue commissions, GIS, and tax equalization departments. Assessors provide information on property and land tax assessment, property listings, values, valuations, property search, and records.

East Hampton Town Assessor 300 Pantigo Place East Hampton NY 11937 631-324-4187

Islip Assessor 40 Nassau Avenue Islip NY 11751 631-224-5585

Patchogue Assessor 14 Baker Street Patchogue NY 11772 631-475-2561

Shelter Island Assessor 38 North Ferry Road Shelter Island NY 11964 631-749-1080

Smithtown Town Assessor 40 Maple Avenue Smithtown NY 11787 631-360-7560

Assessor Offices Near Me

About Assessor Offices

What if I disagree with an assessment?

Most jurisdictions have an appeal process for contesting an assessment. While the specific rules vary from one locality to the next, the process typically involves a hearing before an assessment appeal board. Taxpayers who have concerns about their assessment should visit their local Assessor's Office or its website to learn about the appeal process and what information is required in order to appeal a property tax assessment.

How does my assessment affect the taxes I owe?

The formula used to calculate property taxes varies by location. Your assessment is one part of your property tax calculation. Your property tax payment is calculated by multiplying your property's assessed value, or in some cases half of the assessed value, by the tax rate for your location.

What is the difference between assessed value and market value?

Market value is the likely selling price of a property based on current market conditions. In some jurisdictions, the Assessor calculates an assessed value by applying a factor, for example 70%, to the market value. The assessed value is then used to calculate the taxes for that property.