Onondaga County Assessor

Find Onondaga 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.


Cicero Assessor 8236 Brewerton Road Cicero NY 13039 315-699-1410


De Witt Assessor 5400 Butternut Drive East Syracuse NY 13057 315-446-0973

Elbridge Assessor 5 Route 31 Jordan NY 13080 315-689-7405

Lysander Assessor 6 Lock Street Baldwinsville NY 13027 315-638-0839

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.