When Clarkstown's tentative assessed value runs above what the open market would pay, the cross-district comp set usually shows it. Here is the 2026 frame.
A Clarkstown homeowner reads the 2026 tentative roll and the assessed value reads higher than what a buyer would actually pay. Inside Clarkstown the most common driver is cross-district comp blending, where Nanuet or Pearl River sales pull a New City assessment above the local market.
If yes, what does the appeal look like?
If a school-district-restricted comp set supports a lower value, the case is a Grievance Day filing at the Clarkstown Board of Assessment Review on or before Tuesday, May 26, 2026. Fair Appeal handles the full property tax appeal in Clarkstown and only charges a percentage of first-year tax savings when the assessed value comes down. The Clarkstown assessment calendar is published by the Town of Clarkstown Assessor.
If no, what then?
If the local comp set supports the current assessed value, this is probably not the year for a grievance. The Rockland County equalization rate moves annually and the school-district mill rates shift every year, which is why FairAppeal monitors the Clarkstown roll every year, not just once. The free home check on the homepage takes the comp-set question off the homeowner's desk. For the full Clarkstown picture see the Clarkstown property tax appeal guide.