NYC tax class 1 vs 2 vs 4: what every property owner needs to know

Last updated 2026-07-11

What are NYC's four property tax classes and why do they exist?

New York City does not assess all property the same way. The state legislature built the four-class system in 1981 under the Classified Real Property Tax Act (Real Property Tax Law Article 18) to defuse the political fight over taxing owner-occupied homes at the same rate as skyscrapers and apartment towers. ^[1]

The four classes are:

• Class 1: One-, two-, and three-family residential homes, including condominiums in buildings with no more than three units.
• Class 2: Residential property with four or more units, including rental apartments, co-ops, and condominiums in larger buildings.
• Class 3: Utility company real property. (We'll skip this one. Almost nobody reading this owns a utility substation.)
• Class 4: All commercial and industrial property: office buildings, retail stores, hotels, parking lots, warehouses, factories, and mixed-use buildings where more than 10% of floor area is commercial.

The split matters because each class carries its own assessment fraction, its own cap on annual assessment increases, and in practice, wildly different effective tax rates. A Class 1 homeowner in Queens might pay an effective rate near 0.5% of market value. A Class 4 office owner in Midtown might pay above 10% of assessed value. That gap is no accident. It's the system working as designed, or as distorted, depending on where you sit. ^[2]

How does Class 1 (1-3 family homes) get assessed?

Class 1 is where most individual homeowners live, so this section runs long. The New York City Department of Finance assesses Class 1 properties at 6% of estimated market value. ^[3] Then the real protection kicks in: annual increases in assessed value are capped at 6% per year and 20% over any five-year period.

So if the city decides your house jumped 30% in market value last year because of a hot neighborhood sale, your assessed value can still only climb 6% that year. The rest gets phased in slowly over future years.

That phase-in creates what assessors call a "transitional assessed value." Your bill is calculated on the lower of the fully assessed value and the transitional value. For long-time owners in neighborhoods that took off, the transitional value can sit far below the fully assessed value. That's why two neighbors with nearly identical houses sometimes pay very different tax bills.

The city estimates Class 1 market values mostly from sales of comparable properties, which is standard mass appraisal. But the pool of comps it uses, how recent those sales are, and whether it captured your renovation activity accurately are all fair game for appeal. In tax year 2023-24, NYC had roughly 1.07 million Class 1 parcels. ^[3]

Here's what many homeowners miss. Even with the cap, your assessed value can be wrong if the city pulled the wrong comps or misclassified your property. The cap limits how fast an error compounds. It does nothing to stop the error in the first place. Appealing a Class 1 assessment means showing the city its market value estimate is too high, usually by pulling recent arm's-length sales of genuinely comparable homes within roughly a half-mile and within the past year.

How does Class 2 (apartments, co-ops, and condos) get assessed differently?

Class 2 covers a huge range. A four-unit rental in the Bronx, a 500-unit co-op on the Upper West Side, and a condo in a converted loft can all be Class 2. The method depends on size.

For Class 2 properties with 10 or fewer units, the city uses the income approach or market comparison, close in concept to Class 1. For larger buildings (11+ units), it leans almost entirely on income capitalization: estimate the property's net operating income, apply a cap rate, produce a market value. ^[3]

Class 2 property is assessed at 45% of market value, not 6% like Class 1. ^[3] That sounds brutal, but the rate applied to Class 2 runs lower than Class 4, so the math partly offsets. Class 2 also carries assessment caps: no more than 8% per year and 30% over five years for properties with 10 or fewer units. Buildings with 11+ units have no statutory cap, which can produce sharp jumps.

Co-op and condo owners hit a quirk. The city assesses the whole building as a single unit, then allocates shares to individual units. Your bill depends partly on how that allocation breaks down. Primary-residence co-op and condo owners also get the Cooperative and Condominium Property Tax Abatement, which trims bills, though the benefit has eroded over the years. ^[4]

Appealing a Class 2 assessment usually means challenging the income and expense numbers the city used. If it assumed a higher market rent or a lower vacancy rate than your actual books show, you have grounds. Rent rolls, lease abstracts, and operating expense statements are the evidence that wins these.

How does Class 4 (commercial and industrial property) get assessed?

Class 4 is where the real money lives, both in tax burden and in appeal opportunity. All Class 4 property is assessed at 45% of market value, the same fraction as Class 2. ^[3] But Class 4 has no statutory cap on annual increases. A new lease, a renovation permit, or a hot market can spike your assessed value in a single year.

The city uses the income approach almost exclusively for Class 4. It relies on its own income and expense schedules rather than your actual financials, unless you file a Real Property Income and Expense (RPIE) statement.

That RPIE filing matters. Any income-producing property in NYC with an assessed value over $40,000 must file an RPIE with the Department of Finance every year. ^[5] The deadline is typically June 1. Skip it, and the city uses its own income assumptions, which run higher than reality for properties with below-market leases, high vacancy, or deferred capital needs. Skipping it also draws a penalty.

Class 4 has carried the highest effective rate of the four classes for years. In fiscal year 2024, the Class 4 tax rate was about 10.646% of assessed value. ^[3] Since Class 4 assessed value is 45% of market value, the effective rate on market value works out to roughly 4.8%. On a $10 million office building, that's $480,000 a year before any exemptions.

Mixed-use buildings turn on where the square footage falls. If commercial space tops 10% of total floor area, the whole building is Class 4. If commercial is 10% or less, the building may qualify as Class 2. That line is worth fighting over.

Commercial owners in other high-tax cities face the same squeeze. The NYC property tax overview lays out the full rate structure, and cook county tax assessor tax bill makes a useful comparison for owners with Illinois property.

What are the actual tax rates for each class in NYC?

The NYC Council sets tax rates every year in the budget. Rates move, sometimes a lot. Here are the fiscal year 2024 rates next to the statutory assessment fractions:

Tax Class	Property Type	Assessment Fraction	FY 2024 Tax Rate	Approx. Effective Rate on Market Value
Class 1	1-3 family homes	6%	20.309%	~1.2%
Class 2	Rentals, co-ops, condos (4+ units)	45%	12.267%	~5.5%
Class 3	Utility property	45%	12.755%	~5.7%
Class 4	Commercial/industrial	45%	10.646%	~4.8%

Source: NYC Department of Finance, Property Tax Rates FY 2024. ^[3]

A few things jump off that table. Class 1's assessment fraction is so low (6%) that even with the highest nominal rate (20.309%), its effective rate on real market value is the lowest of the four. Class 2 and 4 show lower nominal rates, but the 45% fraction means you apply that rate to 7.5 times more of your market value than a Class 1 neighbor does.

These differentials have fed litigation and legislative fights for years. A 2021 report by the NYC Advisory Commission on Property Tax Reform found Class 1 properties assessed at systematically lower effective rates than comparable Class 2 condos, which creates horizontal inequity inside the same neighborhood. ^[2] The commission's recommendations sit unenacted as of mid-2026, so the system runs much as it did in 1981.

What are the assessment caps and phase-in rules for each class?

The caps are the most misunderstood piece of NYC property tax law. They're also the main reason your neighbor's bill looks nothing like yours on an identical block.

Here's the statutory structure under Real Property Tax Law sections 1805 and 1805-a: ^[1]

Class 1: Annual increase capped at 6% of the prior year's assessed value. Five-year cumulative cap of 20%. Both apply.

Class 2 (10 units or fewer): Annual increase capped at 8%. Five-year cumulative cap of 30%.

Class 2 (11+ units) and Class 4: No statutory cap. Full market value changes flow through right away.

The phase-in works like this. Say the city decides your Class 1 home's full market value climbed from $800,000 to $1,000,000. At a 6% assessment fraction, the fully assessed value would go from $48,000 to $60,000, a $12,000 jump. But the 6% annual cap limits the increase to $2,880 (6% of $48,000). The remaining $9,120 goes into a "pipeline" and phases in at 6% a year, as long as the market value stays up.

That's how properties underassessed years ago keep catching up long after the market cools. Buy a brownstone in 2010 for $400,000, watch it hit $2 million, and there may still be pipeline increases grinding through your assessment for years.

For Class 4 owners, the missing cap is why a fat lease renewal or a major capital improvement can spike the bill overnight. It's also why Class 4 appeals get filed more often, with bigger dollars on the line.

How do you appeal a Class 1 assessment in NYC?

Class 1 owners appeal to the NYC Tax Commission, which is independent of the Department of Finance. The deadline for Class 1 is March 1 of the tax year (the tax year runs July 1 through June 30). ^[6] You file online at the Tax Commission's portal using form TC201 (most 1-3 family homes) or TC200 (condos and co-ops).

The Tax Commission reviews roughly 15,000 to 20,000 Class 1 filings a year, though the count shifts. Process: file the form, the Commission reviews it administratively, and if you make a reasonable case, you may get an offer to cut the assessed value without a hearing. Reject the offer or get none, and you can request a formal hearing. If the Tax Commission denies relief, you can file an Article 7 proceeding in State Supreme Court, but that needs an attorney and usually makes sense only for larger Class 1 values.

What wins Class 1 appeals? Comparable sales. You want three to five recent arm's-length sales of homes genuinely like yours in size, condition, age, and lot, within about a half mile, sold in the 12 months before January 5 of the tax year. The city mails assessment notices in January, and your window to respond is short. Pulling your own comps from StreetEasy, Zillow, or the ACRIS deed database (free and government-run) is doable without a consultant. ^[7]

DIY kits like the one at TaxFightBack walk you through the comparable sales analysis step by step for exactly this filing, so you keep 100% of any reduction instead of handing 25-40% to a contingency firm.

One practical tip: check that the city has your property's basic facts right before you worry about comps. Square footage, number of stories, year built, lot dimensions. If the city thinks you have a 2,400 sq ft house and you have 1,600, that error alone can support a real reduction.

How do you appeal a Class 2 or Class 4 assessment in NYC?

For Class 2 and Class 4, the same Tax Commission process applies, but the forms and evidence change. Class 2 rentals (4+ units) and Class 4 commercial properties file form TC201 (income-producing property). The deadline is also March 1 for most properties, though verify your specific window with the Tax Commission each year, since some property types have exceptions. ^[6]

For income-producing property, the core of your appeal is an income and expense analysis. You're arguing the city overcapitalized income or used a higher market rent than your property actually commands. Your ammunition:

• Actual rent rolls for the prior year (all leases, all tenants, all concessions)
• Actual operating expenses (maintenance, insurance, management fees, utilities)
• Current vacancy rates with documentation
• Comparable market cap rates from real transactions

The Department of Finance publishes its own income and expense schedules by neighborhood and property type, which is where its initial assessment comes from. ^[8] If your actual net operating income runs materially below what the city assumed, you have a number to fight with. The math: city's NOI assumption minus your actual NOI, capitalized at the city's own cap rate, equals the overvaluation.

For very large Class 4 properties (assessed value above roughly $2 million), many owners go straight to Article 7 in court after filing the Tax Commission form, since the Commission rarely grants big commercial reductions administratively. Article 7 cases need a licensed real estate appraiser and an attorney, so the DIY path runs out at that scale. But for smaller commercial properties and most Class 2 buildings, handling the Tax Commission filing yourself is absolutely doable.

Owners with property in other big markets can compare notes on how la county property tax handles commercial appeals, or how hennepin county property tax treats income-producing property in Minneapolis.

What exemptions reduce your NYC property tax bill?

Exemptions cut your assessed value before the tax rate hits, so they shrink the base rather than credit the total. NYC has dozens. These are the ones that matter most to individual owners:

STAR (School Tax Relief): For owner-occupied primary residences. Basic STAR exempts the first $30,000 of assessed value (school portion of the tax). Enhanced STAR goes to seniors 65+ with household income under $98,700 (adjusted annually) and exempts more. As of 2019, new applicants get a STAR credit check instead of an exemption, but the dollar benefit is similar. ^[9]

Senior Citizen Homeowner Exemption (SCHE): Cuts assessed value by 5-50% for Class 1 and Class 2 (under 11 units) properties owned by seniors 65+ with income below $58,399. ^[4] Plenty of eligible seniors never claim it.

Disabled Homeowners Exemption (DHE): Same income and property-type limits as SCHE, for owners with a disability. Provides a 5-50% cut in assessed value.

421-a and 421-g: Construction and conversion tax exemption programs for new residential buildings. If you bought a condo or co-op built after 1971 with a 421-a benefit, your unit likely has partial or full exemption for a set period, after which taxes reset to full assessment. Many buyers don't clock that their 421-a is expiring until the bill spikes. ^[10]

J-51: A rehabilitation exemption and abatement for buildings under qualifying renovation. Matters for larger Class 2 owners.

Co-op and Condo Abatement: A tax abatement (not an exemption) for primary-residence co-op and condo owners in Class 2 buildings. It comes off your final bill, not your assessed value. Rates and eligibility have tightened over the years. ^[4]

Most exemption deadlines land in mid-March for the following tax year. Miss it, and you usually wait a full year.

How does NYC determine which class your property falls into?

Classification isn't always obvious, and misclassification happens. The city assigns class by use and unit count as of the taxable status date, January 5 each year. ^[6]

The main rules:

• A building with one, two, or three residential units, used only as a residence, is Class 1. That includes a house where you rent a room, or a two-family with a basement apartment, as long as total residential units stay at three or fewer.
• A mixed-use building where commercial space tops 10% of total floor area goes to Class 4, no matter how many residential units it holds.
• A building with four or more residential units and no more than 10% commercial is Class 2.
• Vacant land is generally Class 4.

If you think your property is misclassified, you can file a request for reclassification with the Department of Finance. Moving from Class 2 or 4 into Class 1 can slash your effective rate. The most common case is a three-family that the city treats as a four-unit property because of a permit or certificate of occupancy that doesn't match the real layout.

Check your property's class on the NYC Department of Finance property lookup portal (nyc.gov/finance). ^[3] Your Notice of Property Value, mailed every January, also states the class and current assessed values. If the class is wrong, fix that first, before you touch the assessment amount.

What deadlines do NYC property owners need to know?

Miss a deadline in NYC and you usually wait a full year. Here are the key dates. They can shift slightly, so always verify at nyc.gov/taxcommission before acting:

Deadline	What It Covers
January 5	Taxable status date: property use and ownership as of this date sets classification and exemption eligibility for the coming tax year
Mid-January	Department of Finance mails Notices of Property Value (your assessment notice)
March 1	Deadline to file a Tax Commission appeal (TC form) for most property types [6]
March 15	Deadline to file most exemption applications (STAR, SCHE, DHE) with the city
June 1	RPIE (Real Property Income and Expense) filing deadline for income-producing properties with assessed value above $40,000 [5]
July 1	Start of the new fiscal tax year; new values and rates take effect
July 1 / January 1	Property tax bills due in quarterly installments (July, October, January, April) for most properties

The March 1 Tax Commission deadline is the one that costs people the most money when missed. Your Notice of Property Value shows up in January, and you have roughly six weeks to review it, pull comps, and file. That's plenty of time if you move. It vanishes if you set the notice aside. ^[6]

For online payment logistics, online tax payment for property covers the city's payment portal.

Is the NYC property tax system fair across classes?

It's a fair question, and the honest answer is no, not across all classes. The evidence comes from official sources, more than advocates.

The NYC Advisory Commission on Property Tax Reform, convened under Mayor de Blasio and continued under Mayor Adams, released a preliminary report in 2020 and final recommendations in 2021. One finding: "Similar properties of the same value are taxed differently depending on whether they are classified as Class 1, Class 2, or Class 4." The commission found that condominiums in Class 2 often pay higher effective rates than nearly identical single-family homes in Class 1, sometimes by a factor of two or three. ^[2]

The Lincoln Institute of Land Policy, which tracks property tax uniformity across the country, has published analyses showing NYC's assessment ratios for Class 1 property run systematically lower than for Class 2 condos. That's regressive taxation, and it favors established homeowners (on average wealthier, older, whiter) over newer buyers and renters. ^[11]

The legislature has not acted on the commission's recommendations as of mid-2026. Reform means getting past homeowner politics (Class 1 owners benefit from the status quo and vote in force), rental owner interests, and state legislative dynamics that have blocked change for more than 40 years.

For owners, the takeaway is simple. If you own Class 2 or Class 4 property, you're more likely to be overassessed relative to market value than a Class 1 owner is. That alone makes an appeal worth your time.

Frequently asked questions

What is the difference between a tax class and a tax rate in NYC?

Your tax class sets the assessment fraction applied to your market value and which caps (if any) limit annual increases. The tax rate then hits the resulting assessed value to produce your bill. Class 1 uses a 6% assessment fraction but a high nominal rate (20.309% in FY2024). Class 4 uses a 45% fraction but a lower nominal rate (10.646%). The effective rate on market value is what matters for comparison, and Class 2 and 4 carry a heavier load than Class 1.

Can a property switch from Class 1 to Class 2 or Class 4?

Yes. Add a rental unit that pushes you above three units, or trigger a permit that reveals commercial use above 10% of floor area, and the city can reclassify. Reclassification usually brings a big assessment increase because the 6% Class 1 cap no longer applies. It runs the other way too: owners with a four-unit building where one unit was wrongly counted can sometimes get moved into Class 1, cutting their tax burden sharply.

What is the RPIE and who has to file it?

The Real Property Income and Expense statement is an annual filing NYC requires for any income-producing property (Class 2 with 11+ units, all Class 4) with an assessed value over $40,000. You report actual rents, vacancies, and operating expenses. The city uses that data to set assessments. The deadline is June 1. Skip it and you draw a penalty, and the city is free to use its own (often higher) income assumptions.

Does the Class 1 annual cap protect you forever?

Not entirely. The 6% annual cap limits how fast your assessed value rises but doesn't erase increases. If your neighborhood took off years ago, you may still have pipeline increases phasing in. Sell, and the new owner's assessment resets, so the cap starts from a new baseline. The cap also can't stop a wrong base assessment: if the city's market value estimate is too high, the cap just slows how fast that error compounds.

How do co-op owners get their individual tax bills calculated?

The city assesses the entire co-op building as one Class 2 parcel. Each unit's share of the total tax gets allocated by the cooperative's proprietary lease and the building's offering plan breakdown. Individual shareholders do not file separate appeals for their unit. Appeals happen at the building level, usually by the co-op board or its managing agent, using form TC201. The Co-op and Condo Abatement then applies a per-unit credit that reduces individual bills.

What happens if I miss the March 1 Tax Commission deadline?

For most property types, you lose your chance to appeal the assessment for that tax year. There's no late-filing provision for the Tax Commission's standard deadline. You wait until the following January, when the next Notice of Property Value arrives. In rare cases, a clear clerical error by the Department of Finance (like assessing land you don't own) can be corrected outside the appeal window, but market value disputes have to run through the normal cycle.

Are condos always Class 2 in NYC?

No. A condo in a building with three or fewer total units is Class 1. A condo in a building with four or more units is typically Class 2. And a condo unit in a mixed-use building where commercial space tops 10% of total floor area could sit in a building classified as Class 4, though individual residential condo units may carry a different class designation than the commercial portions. Check your Notice of Property Value to confirm your unit's actual class.

What is the 421-a tax exemption and when does it expire?

421-a is a state program that gives partial or full property tax exemption for new residential construction in NYC to encourage development. Exemption periods run from 10 to 35 years depending on location and program version. When it expires, taxes reset to full assessed value, which can hit condo and co-op owners who bought during the exempt period hard. NYC Finance posts benefit expiration dates on the property lookup portal.

Is it worth appealing a Class 4 commercial property tax assessment myself?

For smaller Class 4 properties (say, under $2 million in assessed value), filing a TC201 yourself with your actual rent rolls, vacancy data, and operating expenses is feasible and can save real money. For larger properties, the Tax Commission rarely grants big reductions administratively, and most serious appeals end up as Article 7 proceedings in state court, which need a licensed appraiser and an attorney. The DIY path has real limits above that scale.

How do NYC property tax rates compare to other major cities?

NYC's nominal Class 4 commercial rate looks high on its own, but comparisons are tricky because other cities use different assessment fractions. Chicago's effective commercial rate runs roughly 6-7% of market value, above NYC's ~4.8%. Los Angeles commercial property is capped by Proposition 13 at 1% of purchase price, far lower. Houston has no income tax and pushes more burden onto property, with effective commercial rates often above 2-3%. Every city's math is different.

Where can I find my NYC property's current assessed value and tax class?

The NYC Department of Finance runs a free public portal at nyc.gov/finance where you look up any parcel by address or borough-block-lot number. You'll see current assessed value, tax class, exemptions applied, and tax bill history. The annual Notice of Property Value also lands at the property address each January. Didn't get it? Pull the same information straight from the online portal.

What evidence do I need to appeal a Class 1 home assessment?

Recent arm's-length sales of genuinely comparable homes: same neighborhood, similar size, similar age and condition, sold within the 12 months before January 5 of the tax year. Three to five good comparables is usually enough. Pull them from ACRIS (the city's free deed database), StreetEasy, or Zillow. Also verify the city has your home's basic facts right: square footage, lot size, number of stories. Physical description errors can be the fastest path to a reduction.

Does filing a Tax Commission appeal risk raising my assessment?

For Class 1 properties, the Tax Commission cannot raise your assessment on an appeal you filed. The TC200 and TC201 forms limit the Commission's action to reducing or holding the current assessment. Flagging your property could, in theory, prompt a future re-inspection by the Department of Finance in later years, though that's uncommon for residential Class 1 appeals. The risk is low against the potential savings.

Sources

1. New York State Legislature, Real Property Tax Law Article 18: The four-class system was created under the Classified Real Property Tax Act, codified in RPTL Article 18, including assessment fraction and cap provisions in sections 1805 and 1805-a.
2. NYC Advisory Commission on Property Tax Reform, Final Report 2021: The Advisory Commission found that similar properties are taxed differently based on class, and that Class 2 condos often face higher effective rates than comparable Class 1 homes.
3. NYC Department of Finance, Property Tax Rates and Assessment Information: FY2024 tax rates: Class 1 at 20.309%, Class 2 at 12.267%, Class 3 at 12.755%, Class 4 at 10.646%; assessment fractions of 6% for Class 1 and 45% for Classes 2, 3, and 4.
4. NYC Department of Finance, Property Tax Benefits for Homeowners: Senior Citizen Homeowner Exemption reduces assessed value by 5-50% for qualifying owners age 65+ with income below $58,399; Co-op and Condo Abatement applies a per-unit credit for primary-residence owners.
5. NYC Department of Finance, Real Property Income and Expense (RPIE) Filing: RPIE must be filed annually by June 1 for income-producing properties with an assessed value over $40,000; failure to file results in a penalty and use of city income assumptions.
6. NYC Tax Commission: The Tax Commission appeal deadline for most property types is March 1 of the tax year; taxable status date is January 5.
7. NYC Department of Finance, ACRIS (Automated City Register Information System): ACRIS is a free government database of NYC real property deed and sale records, usable to pull comparable sales for appeal evidence.
8. NYC Department of Finance, Property Forms and Income and Expense Schedules: The Department of Finance publishes income and expense schedules by neighborhood and property type that form the basis of Class 2 and Class 4 assessments for properties without RPIE filings.
9. New York State Department of Taxation and Finance, STAR Program: Basic STAR exempts the first $30,000 of assessed value for owner-occupied primary residences; Enhanced STAR applies to seniors 65+ with household income under $98,700 (adjusted annually); as of 2019, new applicants receive a credit check rather than an exemption.
10. NYC Department of Housing Preservation and Development: 421-a provides partial or full property tax exemption for new residential construction for 10-35 years depending on location and program version; expiration resets taxes to full assessed value.
11. Lincoln Institute of Land Policy, Significant Features of the Property Tax: Lincoln Institute analyses document that NYC's assessment ratios for Class 1 properties are systematically lower than for Class 2 condos, a form of regressive horizontal inequity.