Sullivan County Assessor

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


Bethel Town Assessor 3454 State Route 55 White Lake NY 12786 845-583-4713


Callicoon Assessor 19 Legion Street Jeffersonville NY 12748 845-482-3881

Highland Assessor 24 Proctor Road Eldred NY 12732 845-557-6563

Liberty Town Assessor 120 North Main Street Liberty NY 12754 845-292-4843

Rockland Assessor 95 Main Street Livingston Manor NY 12758 845-439-3730

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.