If you believe your New York City property is assessed too high, you can file an NYC property tax assessment appeal with the city’s Tax Commission using Form TC108 for one-, two-, and three-family homes or Form TC101 for most other residential and commercial buildings. The deadline is March 15 for Class 1 homes and March 1 for Class 2, 3, and 4 properties, and late applications are not accepted.1NYC Department of Finance. Challenge Your Assessment The strength of your case comes almost entirely from the evidence you attach, so the weeks between January and the deadline are the window that matters.
Start With the Notice of Property Value
Every January, the NYC Department of Finance mails a Notice of Property Value to every property owner. The notice shows the city’s estimated market value, the tentative assessed value for the upcoming tax year, and any transitional assessed value being phased in. It is the city’s official statement of what it believes your property is worth, and it is the document you are challenging. The appeal clock runs from its mailing. If yours never arrived or you recently bought the property, the notice is also posted on the Department of Finance website.
Read it carefully before deciding whether to file. Check that the physical description matches your property, that the tax class is correct, and that any exemptions you qualify for are showing up. An assessment can look too high because the city has the square footage wrong, counted a finished basement that doesn’t exist, or missed an exemption application. Each of those is a different kind of error with a different fix, and only some are properly raised through a Tax Commission appeal.
Make Sure You Have Grounds
NYC assesses property under a four-class system set by Article 18 of the Real Property Tax Law. Class 1 covers one-, two-, and three-family homes and is assessed at 6% of market value. Class 2 covers other residential buildings, including rentals, co-ops, and larger condominiums, at 45%. Class 3 covers utility equipment, and Class 4 covers commercial and industrial buildings, both at 45%.2New York State Senate. New York Real Property Tax Law 1802 – Classification of Real Property in a Special Assessing Unit
Class 1 properties are protected by caps limiting assessed value increases to 6% in any single year and 20% over any five-year period, unless the change comes from new construction or physical improvements.3NYC Department of Finance. Class 1 Property Tax Guide Small Class 2 buildings with 10 or fewer residential units have an 8% annual and 30% five-year cap.4New York State Senate. New York Real Property Tax Law RPT 1805 Larger Class 2 buildings and all Class 4 properties use a five-year transitional phase-in: when the assessed value changes, only 20% of the shift takes effect each year for five years.5NYC Department of Finance. Determining Your Transitional Assessed Value
Those rules matter for your appeal because an assessment that looks high on paper may already be constrained by the cap or sitting below full market value due to the phase-in. The question is not whether your assessed value is lower than your market value (for most owners, it is), but whether the city’s market value estimate itself is wrong, or whether your property is being assessed inconsistently with comparable buildings.
Pick the Right Form for Your Class
NYC appeals go through the Tax Commission, which uses different forms depending on class.6NYC Tax Commission. Application Forms
- Owners of Class 1 properties (one-, two-, and three-family homes) file Form TC108.
- Owners of Class 2 and Class 4 properties file Form TC101.
Filing the wrong form will get your application rejected, and the deadlines leave almost no room to refile. The TC108 is specifically limited to Class 1 properties. It cannot be used to protest the market value shown on the Notice of Property Value, request a change in tax class, or correct physical description errors.7NYC Tax Commission. Form TC108 Application and Instructions Those issues have to be raised with the Department of Finance through a different process, not through a Tax Commission appeal.
Know Your Deadline
The NYC deadlines are firm.
- March 1 for Class 2, 3, and 4 properties.
- March 15 for Class 1 properties.
Applications received after these dates are not accepted.1NYC Department of Finance. Challenge Your Assessment The Notice of Property Value typically arrives in January, so plan on roughly six to ten weeks to evaluate the notice, pull evidence together, and file. If you need an appraisal, book the appraiser early. Qualified appraisers get crowded in February.
Build the Evidence That Will Actually Move the Number
Whichever form you file, the attachments decide the outcome. A one-page complaint with no supporting documents will not succeed.
A certified appraisal from a state-licensed appraiser carries the most weight. The appraisal should comply with the Uniform Standards of Professional Appraisal Practice (USPAP), the nationwide ethical and performance benchmark Congress authorized in 1989. A broker’s price opinion is not a substitute. BPOs provide an estimated sale price, not an opinion of market value, and review boards commonly reject them.
Beyond an appraisal, assemble comparable sales from your neighborhood within the prior six to twelve months. The tighter the match on size, age, condition, and location, the stronger the comparison. Photographs of deferred maintenance, structural damage, or environmental problems help demonstrate that the city overestimated your property’s condition. If you bought the property within the past year, the sale price itself is strong evidence, backed by a signed settlement statement or a recorded deed from the county clerk.
If you own an income-producing building, include certified income and expense statements showing actual net operating income. The Department of Finance uses income estimates to assess Class 2 and Class 4 properties, and the figures the city plugs in are often higher than real-world performance. A clean statement showing lower rents, higher vacancies, or elevated operating costs can shift the assessed value directly.
What Happens After You File
Once your application is in, the Tax Commission reviews your evidence. In many cases the assessor offers a stipulated reduction, which functions as a settlement: the assessor agrees to lower the assessed value to a specific figure without a formal hearing. You can accept or reject it. If no agreement is reached, a hearing may be scheduled, and the Tax Commission then issues a written determination reflecting the final assessed value. That decision arrives by mail after the grievance period closes.
A reduction granted now applies to the tax year the challenged assessment covers. If you overpaid earlier bills based on the higher assessment, you should see a credit or refund through the Department of Finance.
If the Administrative Answer Isn’t Enough: Court Review
If the Tax Commission denies your request or offers a reduction you consider inadequate, two routes into court exist, split by property type.
Small Claims Assessment Review for Owner-Occupied Homes
SCAR is available to owners of one-, two-, or three-family homes that are owner-occupied and used exclusively for residential purposes.8New York State Unified Court System. General Information – Small Claims Assessment Review (SCAR) You must have already gone through the administrative grievance process. Condominiums are generally ineligible unless they are Class 1 condos or fall into a narrow set of exceptions. The petition is filed with the county clerk within 30 days of the final assessment roll’s publication, with a $30 filing fee.9New York State Unified Court System. Small Claims Assessment Review (SCAR) General Information and Filing Requirements The hearing is informal, you don’t need an attorney, and a hearing officer issues a binding determination.
Article 7 Tax Certiorari for Everyone Else
Owners of commercial properties, larger residential buildings, and anyone ineligible for SCAR can challenge their assessment through an Article 7 tax certiorari proceeding in New York State Supreme Court. This is the route commercial landlords use. The proceeding must be initiated within 30 days of the filing of the final assessment roll or notice of that filing, whichever is later.10New York State Department of Taxation and Finance. Contesting Your Assessment in New York State An attorney is effectively required, and the case can take years to resolve. Owners who prevail receive a refund of overpaid taxes for the years covered by the proceeding, but legal fees and appraisal costs need to be weighed against expected savings. Some property tax consultants work on contingency, typically charging 25% to 40% of the tax savings achieved, which eliminates upfront costs but reduces the net benefit of a successful challenge.11New York State Department of Taxation and Finance. Understanding Real Property Tax Assessment Review Proceedings in New York State
What a Reduction Does to Your Mortgage Escrow
If you pay property taxes through a mortgage escrow account, a successful appeal will eventually reduce your monthly payment, but not immediately. Your loan servicer performs an escrow analysis at least once a year and adjusts the monthly deposit to cover the next anticipated tax bill. The new, lower tax amount shows up at the next annual review, and your payment drops for the year that follows.
Federal regulations limit the cushion your servicer can hold in the escrow account to no more than one-sixth of the estimated annual disbursements from the account.12eCFR. 12 CFR 1024.17 – Escrow Accounts If the servicer is holding more than that after your assessment drops, you are entitled to a refund. There is no federal requirement that your servicer run a special mid-year analysis the moment your assessment changes, but if your reduction is substantial and you don’t want to wait, you can request an early review from your servicer directly.
If Your Property Is Outside NYC
The NYC Tax Commission process only covers properties within the five boroughs. In the rest of New York State, the required form is RP-524, Complaint on Real Property Assessment, filed with the local Board of Assessment Review. You choose one of four grounds: unequal assessment, excessive assessment, unlawful assessment, or misclassification.13New York State Department of Taxation and Finance. New York State Form RP-524 – Complaint on Real Property Assessment The deadline is Grievance Day, which falls on the fourth Tuesday in May in most towns, though some municipalities set a different date.14New York State Department of Taxation and Finance. Grievance Procedures Confirm with your local assessor or municipal clerk before relying on the default date.