Assessor

4052 State Route 42, Monticello, NY 12701, USA

845-794-2500 Ext. 324

845-794-8600

[email protected]

Office Hours
Monday - Friday 8:30 AM - 4:30 PM

The Assessor is responsible for the valuation of real property in the Town of Thompson and the Village of Monticello.  The office is also responsible for the administration of various tax exemptions in accordance with New York State Real Property Tax Law, and local laws, along with the maintenance of property inventory records.  Click here for more information about the Job of the Assessor.

Assessor Contacts

Van B. Krzywicki, IAO
Sole Appointed Assessor
[email protected]

Angela Ruggeri
Assessor Clerk   
[email protected]

Richard McClernon
Data Collector
[email protected]

Link to State Forms by Number

Additional Information

Key Facts and Figures: Town of Thompson, Sullivan County NY


Assessment Information

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Find My Tax Bill

Exemption Administration


Tax Grievance Information


Property Analysis Tools