New York property tax grievance day: step-by-step procedure

Last updated 2026-07-10

What is grievance day in New York and when does it happen?

Grievance day is the one day a year when a New York homeowner can formally challenge a property assessment in front of a local Board of Assessment Review (BAR). Miss it, and you wait a full year for the next chance. The rules come from Real Property Tax Law (RPTL) Article 5, which requires the tentative assessment roll to be available for public inspection by May 1 in most municipalities. ^[1]

In most towns and cities across the state, grievance day is the fourth Tuesday of May. A few places run different calendars. New York City is the big exception: the NYC Tax Commission takes assessment challenges on a rolling schedule, with a March 1 deadline for most Class 1 (1-3 family) homes. ^[2] Nassau County runs its own county-level review process on its own timeline. If you're unsure about your municipality's date, call the assessor's office or check the assessor's website.

That fourth-Tuesday date is not a soft suggestion.

Under RPTL Article 5, when the fourth Tuesday falls on or within five days of a holiday, the board can push grievance day to the following week. That's the only wiggle room the law gives you. ^[1] Put the date on your calendar in January so you have months to gather evidence, not days.

Here's what people get wrong. Grievance day is really a filing deadline more than a hearing date. Your completed application has to be in by the close of business that day. The board then schedules individual hearings, which may happen that same day or spread across the days after, depending on how many petitions came in.

Who can file a property tax grievance in New York?

Any owner of record on the assessment roll can file. That covers individual homeowners, co-op shareholders (under certain conditions), and commercial owners. Tenants whose leases require them to pay the property taxes also have standing in some situations under RPTL Article 5. ^[1]

You don't need an attorney. The SCAR system (more on that below) was built for people filing on their own. Thousands of homeowners on Long Island, in Westchester, and upstate file every year with no professional help at all.

Own property in more than one municipality? File separately in each. There's no single state-level process for regular residential grievances.

One practical thing. If you bought your home in the past year, confirm the deed is recorded and the roll shows your name before you file. Some assessors reject a petition from anyone not yet listed as owner of record.

What form do you need and where do you get it?

The form is RP-524, "Complaint on Real Property Assessment" (the year prints on it and changes annually). The New York State Department of Taxation and Finance publishes it. ^[3] Your local assessor's office keeps printed copies too.

RP-524 has four parts:

• Part One: Your property information (address, tax map parcel number, owner name)
• Part Two: The grounds for your complaint (overvaluation, unequal assessment, misclassification, or exemption denial)
• Part Three: Your estimate of the correct assessment and the evidence behind it
• Part Four: Authorization signature

Most homeowners check overvaluation, meaning the assessor's estimated market value sits higher than what the house would actually sell for. That's the claim comparable sales support, and it's the most common and most winnable type of grievance.

Fill out RP-524 completely. Blank fields hand the board an easy reason to toss your complaint on procedure. The parcel ID (also called the tax map section-block-lot number) is printed on your tax bill and posted in your county's online assessment database. ^[4]

Some counties, including Westchester and Suffolk, have supplemental forms or want electronic filing. Ask your assessor first. Nassau County uses its Assessment Review Commission process and its own forms, not RP-524.

What evidence should you bring to support your grievance?

The Board of Assessment Review decides on evidence, not sympathy. The strongest evidence for a residential overvaluation claim is recent comparable sales: sales of homes like yours that closed in the last 12 to 24 months at prices below what your assessment implies.

Here's how to find comps without paying anyone:

1. Pull your county's online real property information system (most NY counties have one; search "[your county] real property tax service"). Look for recent sales within a half-mile, similar square footage (within 20%), similar age, similar condition. 2. Cross-check sale dates and prices on free sites like Zillow or Realtor.com, then verify the recorded transfer through your county clerk's deed records. 3. Print 3 to 5 comparables. For each, note the address, sale date, sale price, square footage, lot size, age, and any obvious differences from your property.

Say your comps show similar homes selling for $350,000 while your assessment implies a market value of $420,000. That $70,000 gap is your argument. Get the implied market value by dividing your assessed value by the municipality's equalization rate, which New York publishes every year. ^[5]

Other evidence that helps:

• A recent appraisal (not required but persuasive; a licensed NY appraisal runs roughly $300 to $600)
• Photos of real defects: a cracked foundation, an ancient furnace, deferred maintenance
• A contractor estimate for major repairs that hit value
• Proof the assessor's records are simply wrong (wrong square footage, wrong bathroom count)

TaxFightBack's DIY appeal kit has a comparable sales worksheet and an evidence checklist built for this exact case, so you walk into the hearing organized.

Skip one thing: emotional arguments about how much your taxes jumped. The board can't cut your taxes directly. They can only change the assessment. And they move on market data, not hardship.

How do you actually submit your grievance?

Most municipalities give you three ways to file:

1. In person on grievance day at your town or city hall 2. By mail, postmarked by grievance day 3. In some places, by fax or email (confirm with your assessor in advance)

Submit two copies of RP-524 plus every attachment. The board keeps one and date-stamps the other for your records. Mailing it? Send certified mail with return receipt so you hold proof of timely filing.

Some counties, including Nassau and parts of Long Island, moved to online submission portals. Check your county's official site well ahead of the deadline.

When you hand in your forms, ask whether the board holds formal hearings or handles grievances by paper review. In small towns, you might get a 5-minute hearing right there on grievance day. In busier places, hearings run over several days in May or June, and you'll get a mailed notice with your time slot.

You don't have to show up for the board to consider your complaint. A paper submission alone counts. But showing up, walking through your comps calmly, and answering questions clearly helps in close calls. Dress like you're going to a parent-teacher conference, not a courtroom.

What happens at the Board of Assessment Review hearing?

The Board of Assessment Review is a panel of at least three members appointed by the town board or city council. Under RPTL Article 5, members must be "knowledgeable in the field of real property valuation," though in practice their backgrounds vary a lot. ^[1]

The hearing is informal. A typical residential hearing runs 10 to 15 minutes. You present your evidence, the board asks a few questions, and you're done. Nobody from the assessor's side cross-examines you in the room (the assessor may file a written response, but there's no opposing counsel firing questions at you).

Bring it all organized: your RP-524 copy, your comp sheets, photos if you have them, and your property record card (get a copy from the assessor beforehand and check it for errors). Walk the board through your comps one at a time. Keep the pitch plain: "These three sales in my neighborhood over the last 18 months averaged $340,000. My assessment implies a market value of $410,000. I'm asking you to lower it to match what homes actually sell for."

The board cannot raise your assessment at this hearing. RPTL Article 5 bars any increase that results from a grievance hearing. ^[1] File without fear on that point.

Within 30 days of grievance day (or the close of the board's hearings), the board mails written notice of its determination. Some boards decide simple cases on grievance day itself; most send letters in June.

What are the typical grievance day deadlines across New York?

Deadlines shift by jurisdiction, so here's a summary. These are based on statutory defaults and published county schedules. Confirm with your own municipality before you rely on any of them. ^[1][4]

Jurisdiction	Grievance Deadline	Filing Body	Notes
Most NY towns and cities	4th Tuesday of May	Board of Assessment Review	RP-524 required
New York City (Class 1)	March 1	NYC Tax Commission	Class 1 = 1-3 family homes
New York City (Class 2/4)	March 1	NYC Tax Commission	Different forms apply
Nassau County	March 1 (approx.)	Assessment Review Commission	Own forms, own process
Westchester County towns	4th Tuesday of May	Local BAR	Some towns offer online filing
Suffolk County towns	4th Tuesday of May	Local BAR	Check town assessor site
City of Yonkers	May (check city)	City BAR	Follows city charter calendar

NYC's process is a different animal from the rest of the state. If you own a 1-3 family home in the five boroughs, see our nyc property tax guide for the Tax Commission procedure specifically.

For Syracuse, Buffalo, and Rochester, confirm directly with the city assessor. City assessment calendars sometimes split off from the surrounding county towns.

What if the Board of Assessment Review denies your grievance?

A denial is not the end. New York gives you two paths after the BAR says no.

Small Claims Assessment Review (SCAR) is the faster, cheaper route, and it's built for homeowners without lawyers. You file a petition in your county's Supreme Court within 30 days of the BAR's final determination. ^[6] The filing fee is $30. A hearing officer (not a full judge) reviews your evidence and can reduce your assessment. SCAR is open to owner-occupied residential properties with no more than three units, and the home has to be your primary residence. Under RPTL Section 730, the hearing officer's decision is final and binding for that year. ^[6]

An Article 7 proceeding (tax certiorari) is the formal court route, open to all property types including commercial. It costs more (you'll probably want an attorney or a certiorari firm), takes longer (12 to 36 months is typical), and pays off mainly when the tax savings are big enough to cover legal fees. For a standard house, SCAR beats it almost every time after a BAR denial.

In Nassau County, there's an extra step. The Assessment Review Commission (ARC) acts as the first-level review body, and SCAR or Article 7 comes after ARC.

Watch the clock: 30 days from the BAR determination notice to file SCAR. Don't sit on it. Mail it certified and keep the receipt.

How much can you actually save by winning a grievance?

Savings hinge on three things: how overassessed you are, your municipality's tax rate, and whether you win at BAR or have to go to SCAR.

New York's equalization rates give you a baseline. In Nassau County, where assessment fights are a way of life, a 2021 Lincoln Institute of Land Policy study found that lower-value homes are systematically over-assessed relative to higher-value ones. ^[7] Translation: the median owner in a below-average-price bracket is probably paying more than a fair share.

Run the rough math. If your home's full market value is $400,000, your assessment implies $420,000, and your combined tax rate (school, county, town, special districts) is $25 per $1,000, you're overpaying by about $500 a year. A grievance that locks in the corrected value saves that $500 every year until the next reassessment.

Nobody has clean aggregate data on average savings per successful NY grievance. The closest public source is Nassau County's ARC annual reporting, which has historically shown that roughly 30 to 40 percent of residential petitioners who file get some reduction. ^[8] Legal aid groups peg SCAR win rates for well-documented cases in the 50 to 70 percent range, but I haven't seen a peer-reviewed study nailing that number down, so treat it as directional.

What I'd do: run the numbers for your own property first. If the potential annual savings are under $200, decide whether the hours are worth it. Over $500, the paperwork pays for itself easily.

Are there exemptions that can lower your assessment separately from a grievance?

Yes, and plenty of homeowners leave exemption money on the table because they only think about grievances.

New York offers several exemptions that cut assessed value before the tax gets calculated:

• STAR (School Tax Relief): Basic STAR covers owner-occupied primary residences with income under $500,000. Enhanced STAR covers homeowners 65 and older with qualifying income (the limit adjusts yearly; for 2025 school taxes it's $98,700 for most of the state). New applicants now receive Enhanced STAR as a credit through the state income tax system. ^[9]
• Veterans' exemption: The alternative veterans' exemption reduces assessed value by 15% to 50% depending on service type, combat status, and the municipality's local option.
• Senior citizens exemption (Section 467): For owners 65 and older under a locally set income threshold, this cuts assessed value by up to 50%. Each municipality picks its own income limit.
• Agricultural, disability, and other exemptions exist for specific cases.

Apply for exemptions through your local assessor, and note that deadlines vary by exemption type. STAR registration goes through New York State directly. ^[9] Exemptions and grievances run on separate tracks, so pursue both at once.

Before you gather evidence, it helps to see how equalization rates turn assessed value into market value. New York publishes equalization rates by municipality every year through the Office of Real Property Tax Services. ^[5]

What mistakes sink most grievance filings before they start?

Missing the deadline is the classic. The fourth Tuesday of May is firm. The board has no power to take a late filing, period.

The second most common mistake is filing RP-524 with no supporting evidence. The form is not evidence. The board needs something to hang a reduction on. "I think my house is worth less" is not an argument. Three comparable sales at lower prices is.

Other mistakes worth dodging:

• Using list prices (asking prices) instead of actual sale prices. Boards want closed sales.
• Using comps from a different school district or town without explaining the comparison.
• Filing for the wrong year. The grievance applies to the coming tax year's roll. Read your assessment notice to confirm which roll year you're challenging.
• Skipping the hearing. You don't have to appear, but if you do and can answer questions, you improve your odds in borderline cases.
• Treating the first denial as final. SCAR exists for a reason. A $30 fee is a fair bet when you have solid comps.

A subtler one: not checking whether the assessor's description of your property is even accurate. If the card says 2,400 square feet and you have 1,850, that error alone supports a reduction with no comp analysis at all.

Before you file anything, pull your property record card from the assessor (it's a public record) and check every field against reality. Wrong bedroom count, wrong bathroom count, wrong lot size, a "finished" basement that's bare concrete. Every factual error is another arrow in your quiver, and some are easy wins.

How does New York's grievance process compare to other states?

New York's process is more formal than most states but more accessible at the residential level than people expect. The BAR system, the SCAR small-claims track, and the $30 filing fee put it in the middle of the national pack for homeowner-friendliness.

Compare it to a couple of big markets. Cook County, Illinois runs a two-stage process, first through the Assessor's Office and then the Board of Review, each with its own evidence rules and deadlines. Our cook county tax assessor tax bill guide covers that. California's Proposition 13 framework means most homeowners have less reason to appeal unless a triggering event happened, and the process runs through a county Assessment Appeals Board. Our los angeles county property tax guide walks through it.

New York's structural headache is the sheer count of taxing jurisdictions. School districts, counties, towns, cities, and special districts each set their own rates. Your assessment is set once, but it feeds multiple tax bills. A winning grievance cuts all of them at the same time, which is why the savings compound.

Nassau County is probably the most tangled residential assessment system in the state. The county went through a court-ordered reassessment in 2020-2021 after decades of contested over-assessments. ^[8] Appeals there still route through the ARC before reaching SCAR, an extra step other counties don't have.

Frequently asked questions

When exactly is grievance day in New York in 2025?

In most New York towns and cities, grievance day in 2025 falls on Tuesday, May 27 (the fourth Tuesday of May). Nassau County and New York City both use a March 1 deadline instead. Always confirm with your local assessor's office, since some municipalities shift the date when it hits a holiday or follow their own charter-based calendar.

Do I need a lawyer or tax certiorari firm to file a property tax grievance in New York?

No. RP-524 is a public form you fill out yourself. The Board of Assessment Review hearing is informal. If the BAR denies you, the Small Claims Assessment Review (SCAR) track was designed for homeowners without attorneys. A lawyer or contingency firm only makes financial sense for commercial properties or cases where the dollar stakes justify their fees, which typically run 25 to 50 percent of one year's savings.

What is the filing fee for a New York property tax grievance?

Filing RP-524 with your local Board of Assessment Review costs nothing. There's no fee for the initial grievance. If the BAR denies you and you go to Small Claims Assessment Review (SCAR), the filing fee is $30. Article 7 (tax certiorari) proceedings carry court costs and usually attorney fees, which makes them practical mainly for commercial or high-value properties.

How many comparable sales do I need to submit with my RP-524?

Three to five recent comparable sales is the practical standard. They should be closed sales (not list prices) from the past 12 to 24 months, as close to your property as possible, and similar in size, age, and condition. More comps add credibility but rarely change outcomes. One very strong comp beats five weak ones with major differences.

Can the Board of Assessment Review raise my assessment after I file a grievance?

No. New York Real Property Tax Law bars the board from increasing an assessment as a result of a grievance proceeding. You cannot make your situation worse by filing. That protection is one of the strongest reasons to file even when you aren't sure you'll win.

What is the equalization rate and why does it matter for my grievance?

New York municipalities often assess property at a percentage of full market value rather than 100%. The equalization rate (published annually by the Office of Real Property Tax Services) converts assessed value into estimated market value. If your town assesses at 50% and your assessed value is $200,000, the implied market value is $400,000. Compare that implied value to your comparable sales to see how far off the assessor is. Find your municipality's rate at the New York State ORPTS website.

What is the SCAR process and how long does it take?

Small Claims Assessment Review (SCAR) is a streamlined court process under RPTL Section 730 for owner-occupied residential properties. You file a petition in Supreme Court within 30 days of the BAR's denial, pay a $30 fee, and a hearing officer reviews your case. Hearings are informal and usually happen in the fall, several months after filing. The hearing officer's decision is final and binding for that assessment year.

Does winning a grievance lower my taxes immediately?

A successful grievance lowers the assessment on the upcoming tax roll. Depending on when your tax bills go out, you may see the reduction on bills arriving later that same year or on bills for the following year. School tax bills and general tax bills sometimes run on different timing. Ask your assessor's office when a current-year decision shows up on each type of bill.

What if I bought my house recently for less than its assessed value?

Your purchase price is strong evidence of market value. Attach a copy of your closing disclosure or HUD-1 settlement statement showing the sale price as an exhibit to RP-524. Boards and courts generally give real weight to arm's-length sale prices from the past one to two years. Expect the board to verify it was an arm's-length deal, not a family sale or a foreclosure.

How does the New York City property tax grievance process differ from the rest of the state?

New York City does not use the BAR/RP-524 system. Owners file a complaint with the NYC Tax Commission instead, with a March 1 deadline for most Class 1 (1-3 family) properties. The Tax Commission has its own forms and procedures. After a denial, owners can go to Article 7 in Supreme Court. SCAR is not available in New York City. See our nyc property tax guide for full details.

Can I file a grievance if I have a STAR exemption?

Yes. STAR exemptions and assessment grievances are completely separate. Having Basic or Enhanced STAR does not disqualify you from filing a grievance and does not affect the outcome. Pursue both if you qualify for an exemption and think your assessment is too high. Winning a grievance reduces the base assessed value, which then stacks with any exemption reduction.

What happens if I miss grievance day?

You lose your right to challenge that year's assessment through the BAR/SCAR track. No extensions get granted. Your next shot is the following grievance day, when a new tentative roll is published. The only alternative is an Article 7 proceeding, but that path has tight post-deadline limits and requires evidence of a procedural error, more than a late filing decision.

Is my grievance hearing public?

BAR hearings are generally open to the public under New York's Open Meetings Law, though in practice few observers attend individual residential hearings. SCAR hearings are quasi-judicial proceedings and are not open to the public the same way. Check with your local board for its hearing rules and whether you can watch other hearings before yours.

Sources

1. New York State Legislature, Real Property Tax Law Article 5 (Sections 500-537): Statutory framework for assessment rolls, grievance day timing (fourth Tuesday of May), Board of Assessment Review procedures, and prohibition on assessment increases from grievance filings (RPTL Article 5, Sections 512, 523, 524, 525)
2. New York City Tax Commission, official website: NYC Tax Commission handles assessment challenges with a March 1 deadline for Class 1 properties
3. New York State Department of Taxation and Finance, official website (Form RP-524): RP-524 is the official Complaint on Real Property Assessment form published by the Department of Taxation and Finance
4. New York State Department of Taxation and Finance, property tax section: Parcel IDs and local assessment data are available through county real property information systems and ORPTS
5. New York State Department of Taxation and Finance, Office of Real Property Tax Services (equalization rates): New York State publishes annual equalization rates by municipality to convert assessed values to full market value
6. New York State Legislature, Real Property Tax Law Section 730 (Small Claims Assessment Review): SCAR is available for owner-occupied residential properties with up to three units; $30 filing fee; petition must be filed within 30 days of BAR determination; hearing officer's decision is final for that year
7. Lincoln Institute of Land Policy, official website (Nassau County assessment research): A 2021 Lincoln Institute study found that lower-value homes in Nassau County are systematically over-assessed relative to higher-value properties
8. Nassau County, official website (Assessment Review Commission): Nassau County ARC reports that roughly 30 to 40 percent of residential petitioners who file receive some assessment reduction; Nassau County went through court-ordered reassessment in 2020-2021
9. New York State Department of Taxation and Finance, STAR program page: Basic STAR covers owner-occupied primary residences with income under $500,000; Enhanced STAR covers homeowners 65 and older; 2025 Enhanced STAR income limit is $98,700 for most of the state; new applicants receive Enhanced STAR as a state income tax credit
10. New York State Department of Taxation and Finance, contest your assessment guidance: Overview of the grievance process including BAR hearing procedures, SCAR eligibility, and Article 7 proceedings for residential property owners