New York property tax appeals begin with a written complaint to your local Board of Assessment Review on Form RP-524, filed on or before Grievance Day, which in most towns is the fourth Tuesday in May. If the board doesn’t reduce your assessment enough, homeowners can escalate to Small Claims Assessment Review (SCAR) and other owners to an Article 7 court proceeding, each with its own 30-day filing window after the final roll. New York City runs an entirely separate system through the NYC Tax Commission with deadlines in early March.
The Deadlines That Control Everything
Miss the filing date and you lose the right to any administrative or judicial review of your assessment for the entire year.1Department of Taxation and Finance. Grievance Procedures There is no extension, no late filing, no exception for hardship. So the first thing to nail down is which calendar applies to your property.
Outside New York City, the tentative assessment roll is typically published on May 1, and Grievance Day is the fourth Tuesday in May. Cities and towns that share an assessor can adopt a later Grievance Day, as late as the second Tuesday in June, and some local charters set their own dates. Always confirm the date with your assessor or municipal clerk before you plan around it.1Department of Taxation and Finance. Grievance Procedures
If the Board of Assessment Review’s decision doesn’t satisfy you, the next deadline is 30 days after the final assessment roll is filed — usually around July 1 — for both SCAR petitions and Article 7 proceedings.2New York State Department of Taxation and Finance. Understanding Real Property Tax Assessment Review Proceedings
New York City runs on a different clock. For the 2026-27 tax year, Tax Class 1 applications (one-, two-, and three-family homes) are due by March 16, and Tax Class 2, 3, and 4 applications (apartments, utilities, commercial) are due by March 2. Late applications are not accepted.3Tax Commission of the City of New York. TC600a – 2026 Application for Correction of Assessment
Grounds You Can Challenge On
New York’s Real Property Tax Law recognizes four grounds. You must pick at least one on the complaint form, and your evidence needs to support the ground you choose.4New York State Senate. New York Code RPT 524 – Complaints With Respect to Assessments
Excessive assessment means the assessed value exceeds your property’s actual market value. This is the ground most residential owners use. It’s also the correct ground if you were wrongly denied an exemption (STAR, senior citizen, veterans) that would have lowered your taxable value.5Department of Taxation and Finance. Completing the Grievance Form
Unequal assessment means your property is assessed at a higher percentage of market value than the average for other properties on the same roll. This tends to come up in municipalities that don’t assess at 100 percent of market value. The state’s equalization rate — the ratio of the municipality’s total assessed value to its total market value — can be used as evidence for this ground everywhere in the state except New York City and Nassau County.6New York State Department of Taxation and Finance. Understanding the Equalization Rate: A Guide for Property Owners
Unlawful assessment means the property is wholly exempt from taxation, sits entirely outside the assessing unit’s boundaries, or was placed on the roll by someone without authority.2New York State Department of Taxation and Finance. Understanding Real Property Tax Assessment Review Proceedings
Misclassification means the property is in the wrong tax class — most commonly a one- or two-family home coded as commercial or non-homestead, which can push it into a higher tax rate.5Department of Taxation and Finance. Completing the Grievance Form
Building the Evidence
The assessment is presumed correct. You carry the burden of proving it wrong by a preponderance of the evidence, which means your case has to be more persuasive than the assessor’s position, not just raise a doubt. Most appeals are decided by the quality of the file the owner brings in, not by anything that happens at the hearing.
The strongest single piece of evidence is a professional appraisal completed within the past year by a licensed appraiser. Appraisals for single-family homes typically run $250 to $600, more for unusual or high-value properties. If an appraisal isn’t in the budget, comparable sales do the same work at lower cost: recent arm’s-length sales of homes with similar square footage, age, lot size, and condition, ideally sold within the past six to twelve months.
Photographs matter more than owners expect, especially of conditions the assessor probably didn’t see. A deteriorating roof, outdated mechanical systems, water damage, a sloping foundation — the assessor’s records usually rest on exterior observations and public data, so credible interior evidence can shift the analysis. Contractor estimates documenting repair costs add another layer.
One risk to weigh: filing a grievance draws attention to your property. If the assessor’s records are outdated and the property has actually been improved, the review could produce a higher valuation on a future roll. New York courts have held that assessors cannot demand interior inspections without demonstrating that the inspection is both reasonable and necessary, and that their interest outweighs the owner’s privacy rights.7New York State Unified Court System. Matter of Aylward v Assessor, City of Buffalo You are not required to let an assessor inside. But if you refuse and the assessor relies on assumptions that overvalue the property, you’ll bear the burden of proving those assumptions wrong.
Filing With the Board of Assessment Review
The entire non-NYC grievance runs on Form RP-524, “Complaint on Real Property Assessment,” available from your assessor’s office or the Department of Taxation and Finance website.8New York State Department of Taxation & Finance. RP-524 – Complaint on Real Property Assessment The form asks for the tax map number, property location, property type, and the grounds you’re claiming. Organize your evidence so it lines up with the grounds you marked.
File the completed form with the local assessor or directly with the Board of Assessment Review (BAR). The BAR is a panel of local residents that serves as the first level of independent review. You aren’t always required to attend the hearing, but showing up lets you walk the board through your evidence and answer questions. The board issues a written determination, typically mailed after the final assessment roll is filed around July 1.9New York State Department of Taxation and Finance. Assessors Calendar The decision will say whether your assessment was reduced, left alone, or dismissed for lack of jurisdiction.
Filing with the BAR is not optional. You must complete this step before any court-level review is available.2New York State Department of Taxation and Finance. Understanding Real Property Tax Assessment Review Proceedings
Small Claims Assessment Review for Homeowners
If the BAR doesn’t reduce your assessment enough, homeowners can take the case to Small Claims Assessment Review, or SCAR. It’s the most accessible court-level option because the process is informal, inexpensive, and doesn’t require a lawyer.
SCAR eligibility is limited. Your property must be an owner-occupied one-, two-, or three-family home used exclusively for residential purposes. Certain vacant lots, farm dwellings, and agricultural land also qualify.10New York State Senate. New York Real Property Tax Law 730 – Procedure to Review Small Claims Residential condominiums, mixed-use parcels where residential use is primary, and separately assessed owner-occupied mobile homes are also eligible.5Department of Taxation and Finance. Completing the Grievance Form
You file a SCAR petition and supporting documentation with the County Clerk within 30 days after the filing of the final assessment roll. The filing fee is $30 per parcel.11New York State Unified Court System. Small Claims Assessment Review (SCAR) ONYC Petition Instructions You’ll need to show that you already went through the BAR, so keep your RP-524 and the board’s determination on hand.
Hearings are conducted by a court-appointed hearing officer with training and experience in real property assessment, though not necessarily an attorney.12New York State Senate. New York Real Property Tax Law 731 – Appointment of Hearing Officers The proceedings are intentionally informal. You present your evidence, the municipality presents its position, and the hearing officer decides. The decision must be written within 30 days after the hearing and is binding on both sides.13New York State Senate. New York Real Property Tax Law 733 – Decision of Petition for Small Claims Assessment Review One quirk to know: the hearing officer cannot reduce the assessment below the number you requested in your petition. Don’t lowball your ask unless the evidence supports it.
Article 7 Proceedings for Commercial and Larger Properties
Owners of commercial buildings, apartment complexes, industrial properties, and anyone else who doesn’t qualify for SCAR use Article 7 certiorari proceedings in State Supreme Court. This is a full judicial review, and it’s substantially more involved and expensive.
The case starts with a Notice of Petition and a verified Petition filed with the County Clerk in a county within the judicial district where the property sits. The filing deadline is 30 days after the last date allowed for filing the final assessment roll, or the published notice of that filing, whichever comes later.2New York State Department of Taxation and Finance. Understanding Real Property Tax Assessment Review Proceedings As with SCAR, you must have already filed a grievance with the BAR. The petition needs to state the specific grounds — excessive, unequal, unlawful, or misclassified.
Costs escalate quickly. Beyond legal fees, you should budget for a professional appraisal, expert witness fees, and potentially stenographer charges for the trial transcript.2New York State Department of Taxation and Finance. Understanding Real Property Tax Assessment Review Proceedings Article 7 cases can take years, and the municipality will have its own attorneys and appraisers. For properties with substantial tax bills, the potential savings can justify the investment. For a modestly assessed commercial property, the math often doesn’t work.
Property tax attorneys often work on contingency, taking a percentage of tax savings. Hourly rates run $150 to $500 depending on experience and location. The total cost of an Article 7 case, including appraisal, legal fees, and experts, can reach several thousand dollars for a straightforward residential matter and much more for complex commercial properties.
New York City Follows a Different System
If your property is in any of the five boroughs, almost everything above works differently. New York City does not use a Board of Assessment Review or SCAR. Appeals go through the NYC Tax Commission, an independent agency separate from the Department of Finance that sets the assessments.
The city sends annual Notices of Property Value (NOPVs) listing the assessed value. If you disagree, you file an appeal directly with the Tax Commission, which has authority to reduce your assessment, change your property’s tax class, or adjust exemptions.14NYC.gov. Challenge Your Property’s Assessed Value The Tax Commission uses its own application forms, available on the NYC Department of Finance website. If the NOPV lists an “effective market value,” you’ll need to show that actual market value is lower than that figure.
NYC property owners who are dissatisfied with the Tax Commission’s decision may pursue a judicial challenge, but the timeline and procedural requirements differ from the upstate Article 7 process.
After a Reduction
When your assessment is reduced, the impact flows through to your next tax bill. The reduction applies to the current tax year’s roll, so you may receive a credit on your upcoming bill or a refund for taxes already paid at the higher figure. In New York City, the Department of Finance applies most property tax credits toward your next bill unless you specifically request a refund, which takes about eight weeks to process.15NYC.gov. Property Refunds and Credits
One detail that catches owners off guard: the reduction only applies to the year you challenged. Assessors set new values each year, and nothing stops the assessor from restoring your property to its original value, or higher, on the next tentative roll. If the market conditions or property issues that supported your grievance haven’t changed, you may need to file again. Owners in persistently overassessed areas often grieve annually as a matter of routine.
If you have a mortgage with an escrow account, contact your servicer after receiving the reduced assessment. Lenders perform annual escrow analyses and adjust monthly payments based on the actual tax obligation, but sending documentation of the reduction can speed the adjustment rather than waiting for the next scheduled review.