Grievance Calculator

About This Calculator

This calculator walks you through the AROW grievance process step-by-step and prepares the key numbers and the Part D statement you’ll paste into your filing. The approach is based on publicly shared methods and community knowledge from Jeff Gold and members of Nassau Grieve Your Tax Assessment – Free .

Be sure to view the Step-by-Step Slideshow Instructions

View Step-by-Step Instructions

If after using this tool you still can’t file your own grievance, Jeff Gold offers flat-rate $250 grievances here: https://jeffgoldflatrategrievances.com/ .
(Not an endorsement. This tool is not affiliated with or sponsored by his firm.)

Step 1 – Compute what Nassau County thinks your house could sell for i

Find your Tentative Assessed Value on your mailed Notice of Tentative Assessed Value, or look it up at https://lrv.nassaucountyny.gov/.

Tentative Assessed Value i

Multiplier 1886 • LoA .053%

Step 2 – Enter the AROW Average Adjusted Sale Price i

Use the AROW “File an Appeal using Sales Locator” (Find Sales)

Enter your street address or Section / Block / Lot, then click Search.
Click your Parcel ID to open your property page. You may need to complete a CAPTCHA.
Scroll to the bottom and click Find Sales.
Select 5 recent sales similar to your home in your school district. AROW will adjust each sale to match your home.
Prefer sales that sold for less than your FMV that we calculated above in Step 1. It is likely best to select the first five options.
Click Select Checked Properties and Continue, then click Continue again.
Copy the Average Adjusted Sale Price and enter it below
Then click "Continue to Submit an Appeal"
Click the button below to calculate your Part B value. Enter this value in Part B: Applicant's Requested Full Market Value
Then continue to Step 3

Average Adjusted Sale Price (from AROW)

Step 3 – Part D Statement i

Where this goes in your application

In AROW, go to Part D and click “Display” to make the section appear. You can leave most fields blank, but you may wish to check boxes for items that apply under “Are any of these adjacent to or visible from the house?”. Then, in the “Other facts” box, paste the statement generated below.

When you’ve pasted Part D into AROW, continue to Step 4 for final submission tips.

Step 4 – Submit Your Grievance i

Finishing up

Once you’ve completed Parts A through E and reviewed your entries, proceed to Part F and click "Submit Application Form" in AROW to file your grievance. You should receive an email confirmation.

ARC decisions often take about 6–9 months. Watch your email carefully for ARC communications.

Join the Facebook group Nassau Grieve Your Tax Assessment – Free to see current member contributions and additional guidance.

All Done!

Double-check everything in AROW before submitting.