GrieveItNowBack homeA simple Nassau County property tax grievance process.
GrieveItNow handles the research, preparation and filing workflow for one flat $99 fee. You provide the property details and authorization; we handle the grievance process and keep you updated.
Tell us about the Nassau County property
Complete the secure intake with the homeowner’s contact information, property address, parcel or tax map number, and relationship to the property.
Pay the $99 flat fee
Payment is handled securely through Stripe. GrieveItNow charges a flat fee rather than taking a percentage of any potential savings.
Complete your digital authorization
After payment, the homeowner signs the authorization allowing GrieveItNow / LI Grievance Services LLC to act as the representative for the Nassau County property tax grievance.
We research, prepare and file
We review the property and assessment information, prepare the grievance, and file with the Nassau County Assessment Review Commission during the applicable filing period.
We keep you updated
You receive confirmation and later filing or outcome updates. ARC, not GrieveItNow, makes the final determination on the assessment appeal.
Current Nassau County filing cycle
The ARC filing period beginning January 4, 2027 is for the 2028/29 assessment, with a current filing deadline of March 1, 2027.
Read our Nassau County property tax grievance guide for more detail and links to official County resources.
Start your grievance — $99