Delaware County Assessor

Find Delaware 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.


Andes Town Assessor 115 Delaware Avenue Andes NY 13731 845-676-3737


Colchester Town Assessor 27294 New York 206 Downsville NY 13755 607-363-2175

Delhi Town Assessor 5 Elm Street Delhi NY 13753 607-746-8843

Hancock Town Assessor 661 West Main Street Hancock NY 13783 607-637-3651

Sidney Assessor 21 Liberty Street Sidney NY 13838 607-561-2336

Walton Assessor 129 North St Walton NY 13856 607-865-5281

What is an Assessor?

An assessor determines the values of properties in a local jurisdiction, such as a county or state. This assessment is then used to determine the taxable value of each property and the corresponding property tax amount. An assessor works with an auditor's office or local revenue commission to determine real estate and property value increases and decreases. The department may work with an appraiser's office on new construction projects to produce property and land tax assessments.

Assessors use a variety of GIS maps and tax equalization tools to determine valuations within their specific boundaries. The assessor determines which properties are exempt from property taxes and ensures that taxpayers aren't overburdened, as well as ensuring that properties aren't undervalued or overvalued. Assessors may provide valuable information for related property searches.