How Town of North Hempstead grievance works
Even though your home is in the Town of North Hempstead, your property tax grievance is filed with Nassau County’s centralized Assessment Review Commission (ARC), not with the town. This is unique to Nassau — every Nassau homeowner uses the same county-level filing body.
You file Form AR1 (residential) or AR2 (commercial) either through the ARC online portal (AROW) or by mail. The current filing window covers the 2028/29 tax year — meaning a successful reduction will first show up on your October 2028 school tax bill.
The full process is identical to every other Nassau town. See our complete Nassau County grievance guide for the step-by-step.
Key facts for Town of North Hempstead grievance
- Filing body — Nassau County Assessment Review Commission (ARC)
- Form to use — Form AR1 (residential) or AR2 (commercial)
- Filing deadline — March 31, 2027
- Tax year affected — 2028/29 (bills starting October 2028)
- Filing fee — $0 — grievance filing is always free
- North Hempstead residential parcels — 62,395 homeowners are eligible to file
Evidence to bring
The most persuasive evidence in any LI grievance:
- Recent purchase price — if you bought in the last 18-24 months for less than the assessor’s estimated market value
- 3-5 comparable sales nearby — same town, similar size, similar features, sold for less
- Independent appraisal — most useful for unique properties (waterfront, large acreage, recent damage)
Use the live Town of North Hempstead property data to see median home values and how your assessment compares to neighbors.
Frequently asked questions
When is the Town of North Hempstead grievance deadline?
March 31, 2027. Filing window opens early January 2027.
Where do I file?
With the Nassau County Assessment Review Commission. The online portal (AROW) is the fastest path; you can also mail Form AR1.
Can I grieve my Town of North Hempstead assessment every year?
Yes. There is no limit on how often you can grieve. Nassau reassesses every year, so most LI homeowners file annually as a maintenance step. Grievance firms recommend it because the worst case is no change.
How much can I expect to save?
Typical successful reductions are 5–15% of assessed value, which translates to roughly that same percentage off your annual bill. Real numbers depend on your starting assessment and how much over-assessment you can prove.
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Sources and citations
- NY Tax & Finance — Contest your assessment tax.ny.gov
- NY State Form RP-524 (grievance complaint form) tax.ny.gov
- Nassau County Assessment Review Commission nassaucountyny.gov
- Farrell Fritz — Nassau extends 2027/28 grievance deadline to Mar 31, 2026 farrellfritz.com
Last verified October 7, 2026. Tax rules change; we re-check every page each quarter.
Educational content and estimates only, not legal, tax or financial advice. Verify with your county or town receiver, an attorney or a CPA before making financial decisions.