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The Town of Cornwall NY Tax assessor is a local government official who estimates the value of real property within a city, town, or village's boundaries. This value is converted into an assessment, which is one component in the computation of real property tax bills.

The assessor is obligated by New York State law to maintain assessments at a uniform percentage of market value each year. The assessor signs an oath to this effect when certifying the tentative assessment roll -- the document containing each property assessment. The physical description (or inventory) and value estimate of every parcel is required to be kept current. In order to maintain a uniform roll, each year your assessor will need to analyze all of the properties in the municipality to determine which assessments need to be changed.