NYC Homeowners: Here's What Happens to Your Property Tax Bill When Your Home Gets Reassessed — and What You Can Do About It
Every spring, hundreds of thousands of New York City homeowners open their mail to find a Notice of Property Value from the city — and most of them have no idea what to do with it. Some ignore it. Some panic. Almost nobody knows they have a hard 90-day window to act, and that window can mean the difference between a manageable tax bill and one that's quietly hundreds of dollars higher than it should be.
Here's exactly what's happening, what it means for your finances, and how to respond before the clock runs out.
What a NYC Property Value Notice Actually Is
The New York City Department of Finance sends these notices every January (for the fiscal year starting July 1). The notice tells you the city's assessed value of your property — the number the city uses to calculate what you owe in property taxes.
Here's the catch: the city doesn't appraise your home the way a buyer or a bank would. They use a complex formula that factors in market value estimates, neighborhood sales data, and property class. Class 1 properties (most one-, two-, and three-family homes in Queens, Brooklyn, Staten Island, and the Bronx) are assessed differently than Class 2 (co-ops, condos, rentals) and Class 4 (commercial). The formulas are not simple, and the errors are common.
In Queens alone, tens of thousands of homeowners overpay every year — not because the city is deliberately overcharging them, but because assessments are based on imperfect data models, and nobody challenges them.
The 90-Day Window You Probably Don't Know About
Once you receive your Notice of Property Value, you have 90 days to file a tax appeal — formally called a Small Claims Assessment Review (SCAR) petition for Class 1 properties, or a Tax Commission hearing for other classes.
Miss that window, and your only option is to wait for next year's cycle.
For most homeowners, the SCAR process is surprisingly accessible. You file directly with the New York State Division of Tax Appeals. The filing fee is $30. You present comparable sales in your neighborhood to argue your home is over-assessed relative to market value. A hearing officer reviews the evidence and issues a binding decision.
What Actually Gets Challenged — and What Wins
The strongest cases involve:
Comparable sales discrepancies — if your assessed value implies a market value significantly higher than recent sales of similar homes on your block, that's grounds for appeal.
Physical errors — incorrect lot size, wrong number of units, misclassified property type. These happen more than you'd think, especially on properties that were renovated or converted.
Transitional value spikes — Class 1 assessments can only increase by 6% per year or 20% over five years. If yours jumped more, that's an automatic challenge.
What doesn't win: arguing that your taxes are "too high" in general, or that you feel the city is unfair. You need comparable data.
The Boroughs Where Over-Assessment Is Most Common
Queens and Brooklyn have historically had the highest rates of successful challenges among Class 1 homeowners, particularly in neighborhoods that have seen rapid appreciation — Astoria, Jackson Heights, Ridgewood, Bushwick, Flatbush, and Bedford-Stuyvesant. If your home has appreciated significantly faster than the city's assessment model has caught up with — or if it's in a neighborhood that gentrified quickly — you may be getting assessed too high.
Staten Island homeowners, particularly in flood-zone areas where market values have softened, also have above-average success rates on appeals. The Bronx and Manhattan Class 1 properties are fewer but the same rules apply.
What It Costs to Challenge — and Whether It's Worth It
For Class 1 homeowners, the SCAR petition is a DIY process. The $30 filing fee is your only out-of-pocket cost if you handle it yourself. Many homeowners do.
For larger properties, co-ops, condos, and commercial buildings (Classes 2 and 4), most owners hire a property tax attorney or consultant who works on contingency — typically 25–33% of the first year's savings. If they reduce your assessment and you save $2,000 in taxes, they take $500–660. You keep the rest, permanently, for as long as the new assessment holds.
Companies like Maidenbaum & Associates, Tax Certiorari Associates, and several boutique NYC property tax firms specialize in this. Most offer free evaluations to tell you whether your property is worth challenging before you sign anything.
The Deadline Depends on When You Got Your Notice
The January notices typically create a March 1 deadline for filing a Tax Commission application (for Class 2 and 4 properties) and a late-March to early-April deadline for SCAR petitions (Class 1). Check your specific notice — the deadline is printed on it. If you've already missed the formal appeal window for this cycle, you can still submit a Request for Administrative Review, which is a lower-stakes process but has no guaranteed outcome.
What to Do Right Now
Pull out your January notice (or download it from nyc.gov/finance — you'll need your BBL number, which is on your property tax bill).
Look up recent comparable sales in your neighborhood. NYC's ACRIS database is free and searchable.
Compare the city's assessed market value to what your neighbors' homes are actually selling for. If there's a meaningful gap, you have a case.
File the SCAR petition yourself if you're Class 1 — it's $30 and straightforward. Or call a property tax consultant for a free evaluation if you're Class 2 or 4.
The window is open. Most New York City homeowners will do nothing — which is exactly how the city keeps the money. The ones who do act tend to win more often than they expect.
The Metro Intel covers real estate, money, and local policy across all five NYC boroughs. For weekly intel delivered to your inbox, subscribe at themetrointel.com.