NY's appeal landscape is fragmented by jurisdiction. Most counties use a Board of Assessment Review (BAR) at the town/city level, escalating to Small Claims Assessment Review (SCAR) for owner-occupied 1-3 family residences. Nassau County uses an Assessment Review Commission (ARC) with a Jan 2 – Mar 2 filing window. NYC has a separate Tax Commission system (NYC boroughs are not covered in this guide; planned for Year 2 expansion). The 4th Tuesday of May (May 26, 2026) is the default Grievance Day for most NY localities — Suffolk County uses the 3rd Tuesday (May 19, 2026).
| Metric | Value |
|---|---|
| Statutory authority | NY Real Property Tax Law (RPTL), particularly Articles 5 (Assessment) and 7 (Judicial Review) |
| Default Grievance Day | 4th Tuesday of May (May 26, 2026) — RPTL §512 |
| Alternate Grievance Days (selected) | Suffolk County: 3rd Tuesday of May (May 19, 2026); other localities can adopt alternate days by local law |
| Nassau County filing window | January 2 – March 2/31, 2026 (Assessment Review Commission, no filing fee) |
| NYC | Separate Tax Commission (NYC boroughs not covered in this guide) |
| Grievance Form | RP-524 (Statewide complaint form, filed at municipal BAR) |
| SCAR eligibility | Owner-occupied 1-3 family residential (plus owner-occupied Class One condos in NYC) |
| SCAR filing fee | $30 filed in NY Supreme Court within 30 days of final assessment roll |
| Article 7 Tax Certiorari | All other property types (commercial, high-value, multi-unit, non-Class-1 condos) |
| Basic STAR Exemption (2026) | $30,000 reduction in school assessed value (income limit $250,000) |
| Enhanced STAR Exemption (2026) | $70,700 reduction in school assessed value (age 65+, income ≤ $110,750) |
| 100% Disabled Veterans Exemption | Full exemption on primary residence (effective for assessment rolls after Jan 2, 2026) |
| Senior Citizens Exemption (RPTL §467) | Up to 50% reduction with sliding income scale, max household income $58,400 |
| Persons with Disabilities Exemption (RPTL §459-c) | Up to 50% reduction, max household income $58,400 |
NY law requires assessment at a percentage of market value, with the percentage (the "level of assessment") set by each locality. Some localities assess at full market value (100%); others use fractional levels (e.g., 65%). The state Department of Taxation and Finance, through ORPTS, publishes annual equalization rates for each municipality to convert to standardized comparison values for state aid and inter-municipal cost allocation.
The math:
Tax bill = Assessed Value × Local Tax Rate (per $1,000 of assessed value)
Two value concepts matter in NY:
Two appealable error types:
⚠️ NY's assessment cycle varies by locality. Some NY municipalities reassess annually; others on multi-year cycles (3-6 years typical); others have not reassessed in decades, leading to significant assessment-to-market-value ratio drift. Check your local assessor's office for the most recent revaluation year before deciding on an appeal theory.
General/system-wide reassessment. NY does not have a statewide reassessment cycle — the state strongly encourages localities to reassess annually (RPTL §305 establishes a "uniform percentage of value" standard), but enforcement is limited. Practical reality: roughly half of NY localities reassess annually; others on 2-6 year cycles; some have not done a comprehensive reassessment in 20+ years (producing significant equalization-rate drift).
Mid-cycle individual reassessment. Even outside reassessment cycles, individual properties can be reassessed for: change of ownership (NY is not an acquisition-value state, but ownership change can trigger record review and update), new construction (added to taxable status as of taxable status date — typically March 1), demolition or removal, factual record corrections, and omitted assessments under RPTL §551 (for property previously omitted from the roll).
Annual mechanisms between reassessments. Three annual processes affect taxable value: (1) Equalization rate publication — ORPTS publishes the annual equalization rate for each municipality, used in inter-municipal allocations and Article 7 cases; (2) STAR exemption recalculation — STAR amounts adjust annually; (3) Tax cap (RPTL §3601) — the NY 2% (or rate of inflation, whichever lower) cap on year-over-year levy increases applies to school districts and many local governments; voters can override.
📋 Your move: Pull your municipal assessor's online property record and your most recent assessment notice. Compare the listed sq ft, beds, baths, lot size, and year built to your actual home. Look up your municipality's most recent equalization rate at the NYS Department of Taxation and Finance. Calculate: assessed value ÷ market value (using a recent purchase price or 3-5 comparable sales). If that ratio meaningfully exceeds the locality's level of assessment, an excessive-assessment claim may be available. Also confirm all exemptions you qualify for — STAR Basic, STAR Enhanced, Senior, Disabled, and Veterans are all eligibility-based and homeowner-initiated.
NY appeal costs vary by stage:
Real costs:
Risk of appealing. Nassau ARC explicitly states that the Commission cannot raise an assessment as a result of an appeal. Most municipal BARs apply the same convention for residential cases. SCAR proceedings cannot raise the assessment. There is generally no "punitive reassessment" risk for filing a good-faith protest.
Contact your local assessor's office (city, town, or village). Most factual-error corrections (sq ft, beds, baths, demolished features) and missing-exemption fixes resolve here without a formal BAR filing.
Lowest-cost step. Start here.
Most NY: file Form RP-524 with your local Board of Assessment Review by Grievance Day. Nassau: file with ARC online via AROW. NYC: file with Tax Commission. Decisions issued within weeks of hearing.
Hard deadline. Miss it = wait until next assessment year.
SCAR for owner-occupied 1-3 family residential ($30 fee, no attorney required, informal proceeding in NY Supreme Court). Article 7 for commercial, high-value, multi-unit, or non-eligible properties (formal proceeding, attorney typical, higher cost). They are mutually exclusive for the same tax year.
SCAR is the standard residential route. Article 7 for everything else.
⚠️ Jurisdictional fragmentation. NY has 62 counties and over 1,400 cities/towns/villages, each with its own assessor. Reassessment cycles, tax bill calculation conventions, and even local Grievance Day dates can vary. Always check your specific municipality's procedures. NYS Department of Taxation and Finance maintains contact information for every NY municipality's assessor on its website.
⚠️ Suffolk County uses an alternate Grievance Day. Most NY counties use the default 4th Tuesday of May. Suffolk uses the 3rd Tuesday of May (May 19, 2026). Always verify your specific town's Grievance Day before assuming the default applies — RPTL §512(1-a) authorizes localities to adopt alternate days by local law.
For excessive-assessment / SCAR appeals:
For unequal-assessment appeals:
Subject-property evidence:
Procedural:
Recent appellate development (Feb 2026): A NY appellate court ruled that homeowners can present their own evidence (including statistical evidence) in SCAR proceedings — Village of Great Neck Estates SCAR petitioners, reversing a lower-court ruling that had blocked homeowner-prepared statistical evidence.
💡 Choose the right escalation venue. SCAR is much cheaper and more accessible than Article 7 — $30 filing fee, no attorney required, informal proceeding. But SCAR is limited to owner-occupied 1-3 family residences (plus Class One owner-occupied condos in NYC). Owners of higher-value, commercial, multi-unit, or non-eligible properties must file under Article 7 — formal proceeding with attorney typical and substantially higher cost. Verify SCAR eligibility before committing to that path.
NY's source corpus is structurally favorable for §6 pattern-finding:
Arms-length sale of the subject property within ~12 months of taxable status date is typically dispositive at BAR and SCAR — strongest evidence of true market value.
In municipalities with stale revaluations, the equalization rate has drifted from the locality's stated level of assessment — producing systematic over-assessment of properties acquired since the last revaluation.
Feb 2026 appellate ruling (Great Neck Estates) confirmed homeowners can present their own statistical evidence in SCAR proceedings, broadening admissible evidence types beyond just licensed-appraiser opinions.
Missing Grievance Day, choosing the wrong escalation venue (SCAR vs. Article 7), or failing to submit Form RP-524's sworn-value statement ends cases before merits review.
NY courts and BARs consistently treat recent arms-length sales of the subject property as the strongest evidence of true market value. The taxable status date framework (typically March 1) means a sale within ~12 months is highly probative; sales beyond 12 months are increasingly discounted.
Practical implication: if a property was purchased recently for less than the assessor's implied true value (assessed value ÷ level of assessment), the closing statement is typically the simplest path to a reduction.
NY's decentralized assessment system means equalization rates can drift significantly between revaluations. ORPTS publishes annual equalization rates for every NY municipality. If the stated level of assessment is, e.g., 100% but the actual equalization rate is 65%, properties whose assessment-to-market-value ratio exceeds 65% are over-assessed relative to the local norm.
This is the closest NY equivalent to NJ's Chapter 123 Common Level Range mechanism, though procedurally different: NY does not have a statutory ±15% safe harbor that automatically triggers reduction. Instead, the appellant proves the over-assessment ratio relative to the equalization rate as evidence of "unequal assessment" under RPTL §501.
In February 2026, a NY appellate court reversed a lower-court ruling that had blocked Village of Great Neck Estates SCAR petitioners from presenting statistical evidence to contest assessments. The appellate decision affirmed that SCAR's informal-evidentiary framework (RPTL §730 et seq.) permits homeowner-prepared evidence, including statistical analyses, beyond just licensed-appraiser opinions.
Practical implication: in SCAR proceedings, homeowners are not limited to licensed-appraiser evidence. Self-prepared comp analyses, ratio calculations, and statistical demonstrations are admissible. This broadens the cost-effective DIY appeal path for NY residential homeowners.
NY's procedural framework has multiple choke points:
Filing in the wrong venue or under the wrong form ends cases before merits review.
| Exemption | Amount | Eligibility |
|---|---|---|
| Basic STAR (RPTL §425) | $30,000 off school assessed value | Owner-occupied primary residence, household income ≤ $250,000 |
| Enhanced STAR (RPTL §425) | $70,700 off school assessed value (2026) | Owner-occupied primary residence, age 65+, household income ≤ $110,750 (2026) |
| Senior Citizens Exemption (RPTL §467) | Up to 50% reduction in assessed value (sliding scale by income) | Age 65+, household income ≤ $58,400 maximum |
| Persons with Disabilities Exemption (RPTL §459-c) | Up to 50% reduction (sliding scale) | Disabled per SS, RR retirement disability, VA pension, or legally blind; income ≤ $58,400 |
| Alternative Veterans Exemption (RPTL §458-a) | Up to 25% reduction (war veteran), additional 10% for combat zone, additional 50% of disability rating | Honorably discharged war veteran, primary residence |
| 100% Disabled Veterans Full Exemption (effective Jan 2, 2026) | Full property tax exemption on primary residence | 100% service-connected disability per VA, primary residence in NY |
| Cold War Veterans Exemption (RPTL §458-b) | Up to 15% reduction (additional disability-based reduction) | Veteran during Cold War (Sept 2, 1945 – Dec 26, 1991), primary residence |
| Surviving Spouse — Disabled Veteran | Same as veteran's amount | Unremarried surviving spouse |
| Agricultural Assessment (Agriculture & Markets Law §301) | Use-value assessment | Land used for agricultural production with ≥7 acres and $10,000+ gross sales |
⚠️ STAR application changes for 2026. NEW for 2026: homeowners no longer need to submit a separate STAR application to the assessor when ownership changes or when they age into Enhanced STAR. The state notifies assessors automatically of Basic STAR recipients who become eligible for Enhanced STAR. However, initial STAR registration (for new owners or first-time applicants) still requires registration with the NYS Department of Taxation and Finance.
📋 Filing deadlines: Most NY exemptions must be applied for at the municipal assessor's office by the locality's taxable status date — typically March 1 in most NY communities (some localities use different dates). The 100% Disabled Veterans Exemption follows the same calendar; file with documentation of the VA disability rating. Senior Citizens Exemption requires annual income recertification to maintain eligibility.
Nassau County operates separately from the rest of NY's BAR system. The Assessment Review Commission (ARC) is an independent county agency that reviews all Nassau assessment correction applications. ARC's filing window is January 2 – March 2 (or March 31 with extension), 2026 — much earlier than the rest of NY's 4th-Tuesday-in-May Grievance Day. Filing is online via the AROW system.
ARC explicitly states it cannot raise assessments — only confirm or reduce. Tens of thousands of Nassau homeowners file ARC appeals annually; many are represented by tax-grievance firms operating on contingency.
💡 Nassau is the highest-volume residential appeal market in NY. The combination of high property values, a county-administered review system, and an established service-company industry produces the largest annual appeal volume in the state. Service companies in Nassau typically charge 40-50% contingency on first-year savings — higher than other NY counties due to the volume-based business model.
Suffolk County uses town-level Boards of Assessment Review in each of its 10 towns. Suffolk uses the 3rd Tuesday of May as its Grievance Day under RPTL §512(1-a) — for 2026, that's May 19, 2026, one week earlier than the statewide default.
Each town has its own Board of Assessment Review and assessor. SCAR petitions for Suffolk residential properties are filed with the Suffolk County Clerk's Office in Riverhead within 30 days of final assessment roll publication.
⚠️ Town-level reassessment cycles vary widely. Some Suffolk towns reassess annually; others have not done a comprehensive revaluation in 25+ years (producing significant equalization-rate drift). Properties in long-stale-revaluation towns may have particularly strong unequal-assessment cases against the local equalization rate. Check the NY Department of Taxation and Finance equalization rate publication for your specific town before filing.
Westchester combines dense urban (Yonkers, Mt. Vernon, New Rochelle) with affluent suburbs (Scarsdale, Bronxville, Rye, Larchmont, Chappaqua). Assessment systems vary by jurisdiction — some cities/towns use the standard 4th Tuesday Grievance Day, others have adopted alternate dates. The Westchester County Clerk's Office handles SCAR petitions.
💡 Westchester's varied jurisdictions produce procedural complexity. A homeowner in Scarsdale and one in Yonkers are in different cities with different assessors, different equalization rates, different Grievance Days, and different procedural conventions. Always verify the specific procedure for your municipality before filing — generic Westchester-level guidance can miss city-specific deadlines.
Erie County encompasses Buffalo (NY's 2nd most populous city, after NYC) plus surrounding cities and towns (Cheektowaga, Tonawanda, Amherst, West Seneca, Lackawanna). Most Erie municipalities have moved to the 100% level of assessment under state encouragement, simplifying the appeal calculus. Buffalo and several suburbs have completed comprehensive revaluations in recent years.
💡 Buffalo housing-market dynamics. Buffalo's housing market has experienced post-2020 appreciation that has outpaced periodic reassessments in some neighborhoods. Recent buyers in appreciating areas may face assessments that have caught up with market values; long-tenured owners benefit from reassessment lag. Check the equalization rate for your specific municipality.
Monroe County is centered on Rochester and includes substantial suburban municipalities (Brighton, Pittsford, Penfield, Greece, Irondequoit). The City of Rochester maintains its own BAR; surrounding towns each have their own. Reassessment cycles vary substantially across Monroe.
Onondaga County is centered on Syracuse and includes mid-sized suburban towns (Camillus, DeWitt, Salina, Cicero, Manlius). Standard NY appeal mechanics apply — town/city-level BAR → SCAR for residential, Article 7 for commercial.
💡 Onondaga assessment-cycle variation. Some Onondaga municipalities reassess annually under the state's uniform assessment standard; others have multi-year cycles. Recent buyers in long-stale-revaluation areas often have unequal-assessment cases worth investigating against the published equalization rate.
Albany County contains the state capital and a substantial state-government employment base. Major suburbs include Bethlehem, Colonie, Guilderland. Standard NY appeal mechanics apply.
Rockland County is on the west side of the Hudson, NYC-commutable via the Tappan Zee/Mario Cuomo Bridge. Standard NY 4th-Tuesday-of-May Grievance Day applies. Rockland's varied housing stock (single-family New City + condo/co-op-heavy Suffern + waterfront Piermont) produces wide assessment-ratio variation.
Dutchess County is mid-Hudson Valley — Poughkeepsie, Beacon, Hyde Park, Wappinger, East Fishkill, plus substantial agricultural land. Standard NY appeal mechanics apply.
💡 Agricultural assessment opportunities. Dutchess has significant agricultural acreage. Properties qualifying for Agricultural Assessment (Agriculture & Markets Law §301) — minimum 7 acres in production with $10,000+ gross sales annually — receive use-value assessment that can produce substantial reductions vs. market-value-based residential assessment.
Orange County (NY — not to be confused with Orange County, California) sits in the Hudson Valley with NYC-commuter rail access via Metro-North. Includes the United States Military Academy at West Point (federal property, generally exempt). Standard NY appeal mechanics apply.
⚠️ Veterans population. West Point and the Newburgh-area veteran population mean that Veterans Exemptions (Alternative, Cold War, and especially the new 100% Disabled Veterans full exemption) are particularly relevant in Orange County. Eligible veterans should confirm whether they're claiming all applicable veterans benefits.
Your closing statement, original MLS listing sheet, and a current USPAP-compliant appraisal by a NY-licensed appraiser are the strongest evidence. Most NY BARs and SCAR proceedings treat a recent arms-length sale of the subject property within ~12 months of taxable status date as nearly dispositive. If your purchase price was below the assessor's implied true value (assessed value ÷ level of assessment), bring the closing statement and request the assessment be reduced.
BAR (Board of Assessment Review) is the local-municipality first-stage venue in most NY counties. ARC (Assessment Review Commission) is Nassau's separate county-level system — same role, different institution. NYC Tax Commission is NYC's first-stage venue. After BAR/ARC/Tax Commission denial, residential 1-3 family owner-occupied properties can escalate to SCAR (Small Claims Assessment Review) — informal, $30 fee, no attorney required. Other property types (commercial, multi-unit, non-eligible condos) escalate via Article 7 Tax Certiorari — formal Supreme Court proceeding, attorney typical, higher cost. SCAR and Article 7 are mutually exclusive for the same tax year.
No, individual residential homeowners can file pro se at the BAR/ARC level (Form RP-524 in BAR jurisdictions; AROW online in Nassau). SCAR proceedings are designed for self-representation — informal, $30 filing fee, NY courts even publish a SCAR primer for homeowners. The February 2026 Village of Great Neck Estates appellate ruling further expanded what evidence homeowners can present in SCAR. Article 7 Tax Certiorari (commercial/high-value) typically requires an attorney given the formal court procedure.
BAR/ARC stage typically resolves within weeks to a few months of the hearing — Nassau ARC issues decisions on a rolling basis through April-September; most BAR decisions are issued within 30 days of Grievance Day. SCAR proceedings typically resolve within 3-6 months of filing. Article 7 Tax Certiorari is much slower — often 1-3 years from filing to final decision, sometimes longer for complex commercial cases.
The BAR/ARC/SCAR/court issues a decision specifying the corrected assessed value. The municipal assessor adjusts the tax roll; the tax collector issues a refund or credit for any overpayment in the affected tax year. The reduced assessment generally applies for the current tax year only — NY does not have a multi-year freeze provision like NJ's CBT-judgment-frozen-2-years rule. You can re-appeal in subsequent years if circumstances change, but each year is independent.
The assessment stays at its current level. Most NY BARs and SCAR proceedings cannot raise the assessment as a result of the appeal. You can re-appeal in the next assessment year. If you lost at the BAR level, you have 30 days from the final assessment roll date to file a SCAR petition (residential 1-3 family) or an Article 7 Tax Certiorari (other property types) for that same tax year.
The financial risk in NY is generally low: BAR/ARC/SCAR cannot raise the assessment as a result of a residential homestead appeal. The real costs are filing fees ($30 for SCAR; no fee for BAR/ARC), DIY time (5-10 hours typical), and contingency fees if hiring (40-60% of one year's savings is common in Nassau, lower elsewhere — read the contract carefully for auto-renewal terms). NY contingency rates run higher than other launch states because the volume-based business model is more developed in Long Island.
For a regular grievance, no — Grievance Day is jurisdictional and missed appeals are dismissed. Nassau ARC has its own Jan 2 – Mar 2/31 window; missing that means waiting until next year. You can file for the next assessment year. If you're a 100% disabled veteran or qualify for Senior Citizens / Persons with Disabilities exemptions, those have separate filing deadlines (typically March 1 in most NY localities) and are unrelated to the grievance process.
The NY landscape includes large Long Island grievance firms (Heller & Consultants, All Island Tax Grievance, Property Tax Reduction, Realty Tax Challenge), national players (Ownwell), and smaller regional firms operating in Westchester, Hudson Valley, and upstate counties. Pricing is dominantly contingency-based:
The Nassau ARC and Suffolk BAR systems' annual filing volumes have produced a mature service-company industry that handles filings at scale. The trade-off: higher contingency rates than other states, but very low DIY-time burden (firms handle Form RP-524 / AROW filing, comp pulling, evidence packet, hearing representation).
💡 Ask the right questions before hiring in NY. If you do hire, ask explicitly: (1) what's the contingency rate and any minimum-fee threshold? (2) does the firm handle Article 7 if escalation becomes necessary, or does that route through to a separate attorney? (3) for the 100% Disabled Veterans full exemption (new 2026) — most firms don't routinely file this; it's a separate municipal-assessor application. Confirm whether you or the firm will handle that filing. (4) auto-renewal: NY service companies often auto-enroll clients for annual filings unless explicitly opted out.
For the cross-state economics of DIY vs. hire, see our DIY vs. hire decision matrix (coming soon).
What we don't claim. This page is general orientation about how the New York property tax appeal system works. It is not legal advice, not a recommendation about whether to appeal a specific assessment, and not a guarantee that following these patterns will produce a favorable outcome. NY's jurisdictional fragmentation means specific procedures vary by city, town, village, and Nassau County's separate ARC system — always verify current details on the linked county/municipal sites before filing. NYC borough property tax appeals are not covered in this guide; planned for Year 2 expansion. For case-specific advice — particularly involving Article 7 Tax Certiorari, complex commercial appeals, or 100% Disabled Veterans exemption applications — consult your municipal tax assessor, the County Board of Assessment Review (or Nassau ARC), or a NY-licensed property tax attorney.
For property tax terminology used in this guide (assessment ratio, equalization rate, lien date, USPAP, etc.), see the property tax glossary.