Town Assessor

Services > Property Assessment

The Town of Mamaroneck completed a town-wide revaluation in 2013 and all properties are assessed at 100% of full market value. The purpose of the Revaluation Project was to establish fair and equitable values. The Assessor’s Office will conduct a systematic analysis of all assessments of real property within the Town of Mamaroneck annually to maintain a 100% level of assessment that is current with market conditions. Assessments are updated every June 1st, the date by which the tentative assessment roll is published for public inspection.


The Town Assessor's office, located on the second floor of the Town Center (Rm 207), is open weekdays:

Winter Hours
Labor Day through Memorial Day
8:30 am - 4:30 pm

Summer Hours
Memorial Day through Labor Day
8:30 am - 4:00 pm

Holiday Schedule


The Town Assessor is responsible for reviewing and determining the value of all property within the Town and insuring the accuracy of property assessment maps. The value of all parcels determines the Town's assessment roll which is the basis for annual tax …

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(914) 381-7820

(914) 381-2111

Department Head
Susan M. Thomas