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Property tax rules change by state, county, and deadline. Always check the official source before you apply.

New York Grievance Day and Assessment Review

Your assessment looks wrong and the deadline may be close

If your New York property assessment looks too high, has the wrong facts, or leaves out an exemption you believe should appear, do not wait for the tax bill.

In most New York cities and towns outside New York City and Nassau County, the formal local review step is called a grievance. The key deadline is usually Grievance Day. That is the day the local Board of Assessment Review, often called the BAR, meets to hear assessment complaints.

For many communities using the standard state calendar, Grievance Day is the fourth Tuesday in May. In 2026, that standard date is May 26. But New York has important local exceptions. Your town, city, village, county, or New York City process may use a different date, form, or review body.

First, check your tentative assessment roll, contact the assessor or review office, and confirm the exact filing deadline.

What this review can and cannot fix

An assessment review is about the assessed value or classification of your property. It can also involve a wrongly denied or wrongly calculated exemption when that issue makes the assessment or taxable value wrong.

It is not the same as asking for lower tax rates. It is also not the same as applying for STAR, a senior exemption, a veterans exemption, a disability exemption, a freeze, or a deferral.

Problem you see Where it usually goes
The value on the roll seems higher than the home could sell for. Assessment grievance or assessment appeal.
The property record lists wrong facts, such as size, units, condition, or improvements. Assessor first. File a grievance if the assessment remains wrong and the deadline is open.
Your exemption is missing, denied, or calculated wrong. Assessor or the office listed on the notice. Check both the exemption deadline and grievance deadline.
Your tax bill is high, but the assessment looks fair. That may be a tax rate or budget issue. The assessor usually cannot change it.

What Grievance Day means in New York

Grievance Day is the local deadline and hearing date for many New York assessment complaints. It is tied to the tentative assessment roll. That roll is the draft roll published before the final roll. In most towns and cities, the tentative roll is published on May 1, but that date can vary.

New York State says property owners should check the tentative assessment roll soon after it is published and before Grievance Day. The roll lets you review the assessment, market value information, exemptions, and other facts used by the assessor.

In most communities, if you want to formally challenge the current tentative assessment, you must file by Grievance Day. If you miss the deadline, you may lose the local administrative review for that assessment year. You may also lose the chance to seek later court review for that same assessment.

Cities, towns, villages, New York City, Nassau County, Suffolk County, Westchester County, and some shared-assessor communities can have different rules or dates.

The deadline is local, even when the state gives a standard date

The New York State property tax calendar lists these common dates for many communities: taxable status date on March 1, tentative roll date on May 1, Grievance Day on the fourth Tuesday in May, and final roll date on July 1. The state also warns that dates can vary and owners should confirm with the assessor.

For communities using the standard 2026 calendar: the fourth Tuesday in May is May 26, 2026. This is not a promise that your locality uses that date. Confirm it with the assessor, municipal clerk, or official municipal website.

Location or situation Deadline rule to check
Most cities and towns outside NYC and Nassau County Usually Grievance Day, often the fourth Tuesday in May. Confirm locally.
Cities and towns that share an assessor May adopt different Grievance Days between the fourth Tuesday in May and the second Tuesday in June.
Suffolk County towns New York State guidance says town BARs meet on the third Tuesday in May.
Westchester County towns New York State guidance says town BARs meet on the third Tuesday in June.
Villages that assess property Often have different grievance dates. Check with the village assessor or clerk.
New York City Use the NYC Tax Commission process, not the town BAR process.
Nassau County Use the Nassau County Assessment Review Commission.

To check local dates, use the New York State Municipal Data Portal, your local assessor’s website, your city or town clerk, or your village clerk if your village assesses property.

Who can file an assessment grievance

New York State says a person who pays property taxes can grieve an assessment. This can include property owners, purchasers, and tenants who are required to pay property taxes under a lease or written agreement.

For most homeowners, the person filing will be the owner. A representative or attorney can also complete the form if properly authorized. You do not have to hire a lawyer to file the local grievance form, and the state says there is no cost to grieve an assessment at the administrative level.

the grievance is for the current tentative assessment roll. New York State says you cannot use this process to grieve assessments from prior years.

Start with the tentative roll and your property record

Before you file, look at the exact facts the assessor is using. Do not rely only on the tax bill. The bill may arrive after the assessment deadline has passed.

  • Find your property on the tentative assessment roll.
  • Write down the total assessment, land assessment, property class, exemptions, and any listed market value estimate.
  • Ask for or download the property record card if your locality makes it available.
  • Check lot size, building size, year built, property class, number of units, bathrooms, finished area, basement, garage, condition, and exemptions.
  • Ask how the locality’s level of assessment or uniform percentage of value is being used.
  • Confirm the valuation date. In most communities it is July 1 of the prior year, but you should verify the local date.

A simple factual mistake can matter. An informal discussion with the assessor may fix some problems before a formal hearing. But do not let the informal discussion make you miss the filing deadline.

The main form outside New York City and Nassau County

For properties outside New York City and Nassau County, New York State directs owners to use Form RP-524, Complaint on Real Property Assessment. The state also provides RP-524 instructions and a plain-English grievance booklet.

File the form with the assessor or the Board of Assessment Review in your city or town. If your property is in a village that also assesses property, you may have both a village assessment and a town assessment. New York State says that to grieve both, you must file a separate RP-524 with both the town and the village.

If you mail the form, do not treat the postmark as enough unless your local instructions clearly say so. New York State guidance says the form must be received by the assessor or BAR no later than Grievance Day.

Ask the local office how it accepts filings. Some offices accept in-person, mail, email, portal, or drop box filings. Others may not.

What to put in Form RP-524

The RP-524 form asks for owner information, property location, parcel identification, current assessment, your opinion of value, the assessment you are requesting, and the reason for the complaint.

Be careful with the amount of reduction you request. New York State warns that you may be limited later by the reduction you requested, even if later facts suggest a larger reduction might have been supported.

The common grounds for complaint

  • Unequal assessment: you believe your property is assessed at a higher percentage of value than other property on the same assessment roll.
  • Excessive assessment: you believe the assessment is higher than the property’s actual market value, or an exemption was denied or calculated incorrectly.
  • Unlawful assessment: you believe the property is being assessed in a way that is contrary to law.
  • Misclassification: you believe the property is in the wrong class in a community that uses homestead and non-homestead tax rates.

Choose the ground that matches your evidence. The BAR is looking at the assessment, the roll, the property facts, exemptions, and legal classification.

Evidence that may help your case

You do not need fancy language. You need clear facts. The best evidence depends on what you are challenging.

If the value is too high

For many homeowners, the strongest evidence is recent sales of similar homes. New York State recommends the sales comparison approach for estimating market value. Try to find sales close to your home in location, size, style, age, condition, lot size, and date.

  • recent comparable sales from your neighborhood or a similar area;
  • a simple sheet showing how the comparable homes differ from yours;
  • photos showing condition problems that affect value;
  • repair estimates for serious defects;
  • a recent appraisal, if you already have one;
  • closing documents if you bought the property near the valuation date; and
  • local sales data from the state’s Sales Web tool or county records.

If the property record is wrong

Bring proof of the actual facts. That may include photos, floor plans, surveys, permits, certificate of occupancy records, contractor letters, or a written explanation of the error.

If you were denied an exemption

Bring the application you filed, the denial notice, proof that you met the rule you are relying on, and any correspondence from the assessor. If you do not have a copy of your exemption application, New York State says you should request that the assessor submit it to the BAR.

If your claim is unequal assessment

Unequal assessment cases can be harder because they involve the level at which other properties are assessed. New York State points to figures such as the equalization rate, residential assessment ratio, and the uniform percentage of value on the assessment roll. Ask the assessor which figure applies in your municipality.

What happens with the Board of Assessment Review

The Board of Assessment Review is local. New York State says it usually has three to five members appointed by the city council, town board, or village board. The assessor and assessor’s staff cannot be members of the BAR. The assessor, however, must attend formal hearings and has the right to be heard.

You have the right to attend the hearing and present statements or documents. You may appear by yourself or with a representative. If someone else appears for you, make sure the authorization part of the form is completed.

The BAR may ask questions. Keep your presentation short and factual. A clear one-page summary with attached evidence is often easier to follow than a large pile of papers with no explanation.

A simple hearing outline

  • State the property address and parcel ID.
  • State the current assessment.
  • State the assessment or correction you are requesting.
  • Explain the reason in one or two sentences.
  • Point to the evidence.
  • Ask when and how the decision notice will be sent.

In some cases, you and the assessor may agree to a reduced assessment before or on Grievance Day. This is called a stipulation. New York State says that if you enter a stipulation, you may not ask the BAR for a further reduction. If the agreed assessment appears on the final roll, you may not be allowed to seek a lower assessment through judicial review. Read any stipulation carefully before signing.

If you are late

If the deadline has not passed, file as soon as possible. If the BAR meeting is very close, ask the assessor or clerk whether a late-in-the-window filing affects the hearing schedule. The RP-524 instructions say that filing fewer than four business days before the BAR meets can allow an adjournment if the assessor requests time to respond.

If Grievance Day or the local filing deadline has already passed, ask the assessor or review office what options remain. Be direct: “I missed the assessment grievance deadline. Is there any correction process, clerical error process, exemption issue, or next-year step I should know about?”

Do not assume you can fix a missed assessment grievance through the tax collector. The collector usually handles bills and payments, not the assessment roll.

If the BAR denies your complaint or gives only part of what you asked for

The BAR should send a notice of determination. Keep it. You may need it if you want to go further.

New York has judicial review after the administrative review step. For many owner-occupied one-, two-, or three-family homes, the next step may be Small Claims Assessment Review, called SCAR. The New York State Unified Court System describes SCAR as a less costly and more informal court process before a hearing officer. The current court information lists a $30 filing fee.

SCAR is not available for every property. The court says the owner generally must have already filed the written administrative complaint and must own and occupy a one-, two-, or three-family residence used exclusively for residential purposes, or a qualifying unimproved lot. Certain owner-occupied condominiums may qualify under specific rules.

New York State guidance says SCAR and tax certiorari proceedings must generally be started within 30 days after the final assessment roll is filed or notice of filing is published, whichever is later. Check the New York Courts SCAR page and your county clerk before the time runs.

Tax certiorari is the more formal Supreme Court route. If you are considering that path, especially for commercial, multi-family, high-value, or complex property, speak with a qualified attorney.

New York City and Nassau County are different

Do not use the town BAR instructions if your property is in New York City or Nassau County.

New York City uses the NYC Tax Commission for administrative review of assessments set by the Department of Finance. The Tax Commission’s 2026/27 forms page says applications for Classes 2, 3, and 4 were accepted if received by 5 p.m. March 2, 2026, and Class 1 applications if received by 5 p.m. March 16, 2026. It also says a request to correct descriptive information with the Department of Finance does not replace a timely Tax Commission application.

Nassau County uses the Assessment Review Commission. Nassau publishes its own assessment review dates. Its official date table listed March 2, 2026 as the grievance due date for the 2026/27 school year and 2027 town/county year.

These systems have their own forms, instructions, filing methods, and follow-up rules. Check the official NYC or Nassau page for the year you are filing.

How this differs from exemptions, freezes, rebates, credits, deferrals, and postponements

A New York assessment grievance is one tool. It is not every kind of property tax relief.

Term Plain-English meaning
Assessment review or grievance Challenges the assessment, property facts, classification, or certain exemption-related assessment issues on the roll.
Exemption Removes part of value from taxation if you meet the program rules and file correctly.
Credit or rebate May reduce taxes or return part of taxes through a separate state or local program.
Freeze May limit growth in taxable value or taxes under specific local or state rules.
Deferral or postponement Usually delays payment. Depending on the program, it may involve a lien, interest, repayment at sale, or estate issues.

If your assessment is wrong, follow the assessment review path. If your assessment is right but a relief program is missing, ask about that program’s application and deadline. Sometimes both issues matter.

Before you file: a short checklist

  • Find your tentative assessment roll entry.
  • Confirm your exact local filing deadline.
  • Confirm the correct office: assessor, BAR, NYC Tax Commission, or Nassau ARC.
  • Download the correct form for your location.
  • Check the property record for mistakes.
  • Gather comparable sales or other value evidence.
  • Collect exemption denial or approval documents if the issue involves an exemption.
  • Make copies of everything you file.
  • Ask for proof of receipt if you file in person or through a portal.
  • Mark the final roll date and any court-review deadline if you may go further.

Official sources used for this guide

This guide uses official sources, including New York State assessment review guidance, assessment grievance forms, the property tax calendar, New York Courts SCAR information, the NYC Tax Commission, and Nassau County dates.

Editorial note

Property Tax Relief Guide is an independent information site. It is not a government agency, law firm, tax office, assessor, or appeal company. This article uses official and high-trust sources to explain the general process in plain English. Assessment rules, forms, local dates, filing methods, and appeal rights can change. Confirm the current rule with the official assessor, review board, Tax Commission, county clerk, or court before you file or rely on a deadline. This guide is general information, not legal, tax, financial, or official government advice.