Made by Long Islanders, for Long Islanders
Grieve Nassau files your Nassau County property tax grievance for you — right from your phone. You keep every dollar you save.
No paperwork. No confusing forms. No 50% commission.
Enter your address. We pull your assessment and comparable sales to show your estimated savings instantly.
E-sign your authorization in seconds. $99/year covers your annual ARC filing.
We file during the January–March window. Track everything and review offers right in the app.