Two nearly identical brownstones on the same Brooklyn block can carry property tax bills that differ by thousands of dollars a year. NYC property tax differences trace back to a state law that sorts every parcel in the city into one of four tax classes, and each class carries its own assessment ratio, its own cap on how quickly assessed value can rise, its own set of exemptions, and its own tax rate reset every year. Layer those variables together and two owners whose properties are worth the same on the open market can owe amounts that differ by a factor of five or more.
The Four Tax Classes Behind Every NYC Bill
Real Property Tax Law § 1802 requires the Department of Finance to place every parcel into one of four classes based on how it’s used and owned.1New York State Senate. New York Real Property Tax Law 1802 – Classification of Real Property in a Special Assessing Unit
- Class 1: One-, two-, and three-family homes, including mixed-use dwellings that are primarily residential. Most condos in buildings taller than three stories are excluded, even if they contain only one unit. Certain vacant land outside Manhattan also lands here.
- Class 2: All other residential property, from four-unit walk-ups to large rental towers, plus cooperatives and condominiums that don’t qualify for Class 1.
- Class 3: Real property owned by utility companies, such as power plants and telecom infrastructure.
- Class 4: Everything else — primarily commercial and industrial properties like office towers, retail stores, factories, and hotels.
The class a property lands in dictates nearly everything that follows. Two residential owners on the same block can end up in different classes because one owns a condo in a high-rise (Class 2) while the other owns a three-family rowhouse (Class 1), and from that single sorting decision the rest of the bill diverges.
The Assessment Ratio Gap
Once a property is classified, the Department of Finance estimates its market value and applies an assessment ratio to determine the taxable portion. Class 1 properties are assessed at 6% of market value. Classes 2, 3, and 4 are assessed at 45%.2New York City Department of Finance. Determining Your Assessed Value That 39-point spread is the single biggest reason NYC tax bills diverge. A Class 1 home valued at $1 million has an assessed value of $60,000 before any caps or exemptions. A Class 2 condo worth the same $1 million starts at $450,000.
The methods used to reach that market value also differ by class. For Class 1 homes, the Department of Finance looks primarily at comparable sales of similar nearby properties.3NYC Department of Finance. NYC Residential Property Taxes Class One For Class 2 rental buildings and Class 4 commercial properties, the city shifts to an income-based approach, estimating what a building earns or could earn from rents. A co-op apartment’s market value is therefore tied to the rental income of the building as a whole, not to what similar apartments sell for, which often produces a market value estimate well below the actual sale price of individual units.
Caps on How Fast Assessed Value Can Rise
State law places hard limits on assessment growth, but the limits differ by class and by building size. This is why a longtime homeowner and a recent buyer next door can hold nearly identical houses and pay very different taxes.
Class 1 Caps
Under Real Property Tax Law § 1805, a Class 1 property’s assessed value cannot rise more than 6% in a single year or more than 20% over any five-year period.4New York State Senate. New York Real Property Tax Law 1805 – Limitation on Increases of Assessed Value of Individual Parcels In a market where home prices have doubled or tripled over two decades, these caps have kept many Class 1 assessments far below their actual market value. The Department of Finance notes that most Class 1 properties are assessed at less than 6% of market value because of these accumulated caps.3NYC Department of Finance. NYC Residential Property Taxes Class One Someone who bought decades ago in a rapidly appreciating neighborhood benefits enormously. A recent buyer of a comparable home next door may see their assessed value still climbing toward the full 6% ratio.
Class 2 and Class 4
Smaller Class 2 buildings with 10 or fewer units get their own caps: no more than 8% growth per year and 30% over five years.5New York City Department of Finance. Class 2 Guide Larger Class 2 buildings with 11 or more units have no hard cap. Instead, any change in assessed value is phased in over five years at 20% per year.6New York City Department of Finance. Determining Your Transitional Assessed Value Class 4 commercial properties use the same five-year phase-in. Class 3 utilities have no cap at all.
The practical effect: long-held Class 1 homes carry the most suppressed assessments in the city, small Class 2 buildings get moderate protection, and large commercial and residential buildings face the closest alignment between assessed and actual market value.
Why the Class Tax Rates Mislead
The NYC City Council sets a separate tax rate for each class every year. For tax year 2026:7New York City Department of Finance. Property Tax Rates
- Class 1: 19.843%
- Class 2: 12.439%
- Class 3: 11.108%
- Class 4: 10.848%
Class 1 homeowners appear to pay the highest rate. But the rate applies to assessed value, not market value. Because Class 1 assessments are capped at 6% of market value, and usually sit well below that, the effective burden as a percentage of what the home is actually worth is far lower than for Class 2 or Class 4 properties assessed at 45%.
The rates shift annually with the city’s budget and total tax levy. State law also prevents any single class’s share of the total levy from increasing by more than 5% in a given year, which further constrains how much the Council can shift the burden between classes. The system moves every year, but it moves slowly.
Exemptions and Abatements That Split Neighbors’ Bills
On top of the class system and caps, a patchwork of exemption and abatement programs pushes similar properties further apart. Two neighbors in the same building can pay different amounts because one qualifies for a program and the other doesn’t.
STAR
The School Tax Relief program reduces school-related property taxes for owner-occupied primary residences. New applicants register for a STAR credit, which arrives as a check from the state rather than as a reduction on the tax bill. Basic STAR is available to homeowners with combined income of $500,000 or less. Enhanced STAR is available to owners age 65 and older with income of $110,750 or less for the 2026–2027 school year.8New York State Department of Taxation and Finance. Types of STAR Some longtime homeowners still receive STAR as an exemption that reduces their assessed value directly, but new registrants are routed to the credit.9New York State Department of Taxation and Finance. STAR Eligibility
Senior Citizen Homeowners’ Exemption
SCHE provides a reduction in assessed value ranging from 5% to 50%, depending on household income. All owners and their spouses must have a combined adjusted gross income of $58,399 or less, and at least one owner must be 65 or older. At the lowest income tier ($50,000 and under) the exemption cuts assessed value in half, stepping down in roughly $1,000 income increments until it reaches 5% for those earning between $57,500 and $58,399.10NYC311. Senior Citizen Homeowners’ Exemption (SCHE) SCHE stacks with STAR.
Veterans Exemptions
The Alternative Veterans Exemption gives a 15% reduction in assessed value to those who served during a qualifying conflict, capped at $2,880 for Class 1 and $21,600 for Classes 2 and 4. Veterans who served in a combat zone get an additional 10% reduction (up to $1,920 for Class 1, $14,400 for Classes 2 and 4). Disabled veterans receive a reduction based on 50% of their disability rating, capped at $9,600 for Class 1 and $72,000 for Classes 2 and 4.11New York City Department of Finance. Veterans Exemptions Cold War-era veterans who served between September 1945 and December 1991 qualify under a separate tier with similar benefit levels.
Cooperative and Condominium Abatement
Abatements work differently from exemptions. An exemption reduces assessed value before the tax rate is applied; an abatement is a credit subtracted directly from the final bill. The Cooperative and Condominium Property Tax Abatement reduces taxes for eligible co-op and condo owners who use the unit as a primary residence.12New York City Department of Finance. Cooperative and Condominium Property Tax Abatement Applications must be filed online by February 15 each year; if February 15 falls on a weekend or holiday, the deadline extends to the next business day. Missing the window means forgoing the abatement for the tax year starting July 1.
Where Differences Become Permanent
Most tax gaps between comparable properties harden over time because one owner appeals and the other doesn’t. If you believe the Department of Finance overvalued your property, you can appeal to the NYC Tax Commission, an independent agency with the authority to reduce your assessed value, change your tax class, or adjust exemptions.13New York City Department of Finance. Challenge Your Assessment The deadlines are firm: March 15 for Class 1 properties and March 1 for Classes 2, 3, and 4. Appeals filed after those dates are rejected outright.
Before filing, review the Notice of Property Value the city mails each January. If your NOPV lists an “effective market value,” you need to show that the actual market value falls below that figure to win. The Department of Finance also offers a separate Request for Review process, but it is not a substitute for a Tax Commission appeal and does not preserve your right to challenge the assessment.
Owners who appeal regularly keep their assessments in check. Owners who ignore the NOPV and let years pass can end up paying significantly more than comparable neighbors who contested the same valuation. Combined with the class system, the ratio gap, the growth caps, the rate structure, and the exemption patchwork, that final variable is why no two NYC property tax bills look quite alike.