Suffolk County Property Tax Grievance, New York

Travis Bunn·Updated July 24, 2026

Suffolk County is the easternmost county in New York State, constituting the eastern two-thirds of Long Island with a population of approximately 1.55 million residents. The county seat is Riverhead, with major population centers including Brookhaven, Huntington, Islip, Babylon, and Smithtown. Property tax grievances are particularly important in Suffolk County because it ranks among the top 12 counties nationally for highest median property taxes, with homeowners paying a median annual tax bill of $10,001, more than four times the national median of $2,400. Suffolk County's effective tax rate of 1.85% combined with high home values creates a significant tax burden that makes challenging assessments critical for homeowners seeking relief.

Notable cities: Riverhead, Brookhaven, Huntington, Islip, Babylon, Smithtown, East Hampton, Southampton

Median Home

$539,500

Tax Rate

1.85%

Annual Tax

$10,001

Population

1,548,850

On the typical Suffolk County home, valued near $539,500 at the county’s effective tax rate of 1.85%, an over-assessment of even 10% means you are overpaying year after year until you grieve it. Here is how to find out if yours qualifies.

2026 Grievance Deadline: May 19, 2026 (the third Tuesday in May)

The Suffolk County grievance deadline is always the third Tuesday in May. The filing period begins May 1st when the tentative assessment roll is published, giving property owners only 13 business days to file. The deadline applies to all 10 Suffolk County towns. If you miss the May 19, 2026 deadline, you must wait until May 2027.

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How Suffolk County Assesses Property

100%of market value

Assessed by: Individual town assessors in each of Suffolk County's 10 towns handle property assessments

Assessment cycle: Suffolk County is unique as the only county in the country that does not reassess on a regular basis

Notices typically mailed: May (tentative assessment roll released May 1st)

Suffolk County assesses properties at 100% of market value, meaning your assessed value should equal your home's fair market value. For example: if your home's market value is $539,500 (the county median), at the 100% assessment ratio your assessed value would be $539,500, resulting in approximately $9,981 in annual taxes at the county's effective rate of 1.85%. If you believe your assessment exceeds your actual market value, you have grounds to file a grievance.

The Grievance Process

Appeals are heard by the Board of Assessment Review. Suffolk County towns generally afford only a cursory review of administrative grievances, so expect your Board of Assessment Review grievance to be denied. The real opportunity for reduction comes through the Small Claims Assessment Review (SCAR) court proceeding, where most Suffolk County reductions are actually won through settlement conferences or hearings before a judicial hearing officer.

Step 1: Review your tentative assessment notice (mailed around May 1st) and compare your assessed value to your home's actual market value and comparable properties in your area

Step 2: Gather evidence including at least 3 comparable sales from the past 12-24 months, photos of your property, documentation of any defects or needed repairs, and property information

Step 3: Complete Form RP-524 (Complaint on Real Property Assessment) available at tax.ny.gov or your town assessor's office, including your requested assessment and grounds for complaint

Step 4: File Form RP-524 and all supporting documentation with your town assessor's office or Board of Assessment Review by May 19, 2026. The form must be received, not just postmarked, by the deadline

Step 5: The Board of Assessment Review will review your grievance. In Suffolk County, almost all administrative grievances are denied with only a cursory review

Step 6: If denied (as most are), file a Small Claims Assessment Review (SCAR) petition in court between July and September 2026 (or September 15-October 15 for Huntington properties). The SCAR filing fee is $31

Step 7: Attend your SCAR hearing where a judicial hearing officer will review evidence. Most cases settle through conference before the hearing. If successful, you'll receive a tax refund and reduced assessment for the following year

Step 8: If still unsatisfied, you may appeal to Article 7 proceeding in State Supreme Court, though this requires an attorney for most cases

Required form: Form RP-524 (Complaint on Real Property Assessment) and supporting documentation

Filing Methods

mail:File with your town assessor's office. Each town has its own filing address and requirements. Must be received by May 19, 2026 (not postmarked). If mailing, send by May 12.

in-person:Deliver directly to your town assessor's office or the Board of Assessment Review before the May 19, 2026 deadline

Evidence to Bring

At least 3 comparable home sales from past 12-24 months with addresses, sale prices, dates, and property detailsPhotos of your property showing condition, defects, or needed repairsRepair estimates or contractor quotes for any significant issuesProperty information including square footage, lot size, age, and featuresRecent appraisal if availableDocumentation of assessment inequities compared to similar properties

Suffolk County Assessor Contact

Suffolk County Real Property Tax Service Agency

Website: https://www.suffolkcountyny.gov/Departments/Real-Property-Tax-Service-Agency

Hours: Note: Property tax grievances must be filed with the assessor's office in the town where the property is located, not with the county office. Each of Suffolk County's 10 towns has its own assessor's office

Tax Exemptions in Suffolk County

STAR (School Tax Relief) - Basic

Varies by town: $220-$61,600 for 2025-26 school year depending on location

Reduces school district taxable value for owner-occupied primary residences

Eligibility: New York homeowners who own and live in their home with adjusted gross income not exceeding $500,000Deadline: Register at tax.ny.gov/star. New applicants receive STAR credit (state check) rather than exemption

Enhanced STAR (Seniors)

Varies by town: $550-$174,490 for 2025-26 school year. Approximately $88,050 statewide average for 2026

Larger school tax reduction for senior citizens

Eligibility: Senior citizens age 65+ whose annual adjusted gross income (less IRA distributions) is under $98,700 for 2026Deadline: Register at tax.ny.gov/star before the income threshold deadline

Senior Citizens Exemption (SCHE)

Up to 50% reduction in assessed value for seniors with income under $58,399

Reduces assessed value for county, town, and school taxes for qualifying seniors

Eligibility: Homeowners age 65+ with income below approximately $37,400-$58,399 (varies by locality). Must be primary residence

Veterans Exemption - Alternative

Basic exemption increased from $27,000 to $54,000 (15% of assessed value). Combat veterans receive additional $36,000

Property tax exemption for honorably discharged veterans who served during qualifying periods

Eligibility: Honorably discharged veterans who served during wartime or their unremarried surviving spouses. Must be primary residenceDeadline: March 1st with town assessor's office. Does not renew annually once granted

Disabled Veterans Exemption

Maximum exemption increased from $90,000 to $180,000, calculated as assessed value multiplied by 50% of disability rating

Additional exemption for veterans with service-connected disabilities

Eligibility: Veterans with service-connected disability rating from VA or Department of DefenseDeadline: March 1st with town assessor's office

Cold War Veterans Exemption

15% of assessed value, up to $54,000 maximum

Exemption for veterans who served during the Cold War period

Eligibility: Veterans who served on active duty for more than 365 days between September 2, 1945 and December 26, 1991Deadline: March 1st with town assessor's office

Suffolk County Grievance Packet · $49

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Frequently Asked Questions

What is the deadline to file a property tax grievance in Suffolk County for 2026?

The deadline to file a property tax grievance in Suffolk County is May 19, 2026, which is the third Tuesday in May. This deadline applies to all 10 Suffolk County towns including Babylon, Brookhaven, East Hampton, Huntington, Islip, Riverhead, Shelter Island, Smithtown, Southampton, and Southold. The filing period begins May 1st when the tentative assessment roll is published, giving you only 13 business days to file a complete grievance. Your grievance must be received by the deadline, not just postmarked, so if mailing your forms you should send them by May 12th to ensure timely delivery.

How do I file a property tax grievance in Suffolk County?

To file a property tax grievance in Suffolk County, you must complete Form RP-524 (Complaint on Real Property Assessment) available at tax.ny.gov or your town assessor's office. Attach supporting documentation including at least 3 comparable home sales, photos of your property, and any evidence of defects or overvaluation. File the completed form and documentation with the assessor's office or Board of Assessment Review in the town where your property is located by May 19, 2026. Each Suffolk County town has its own filing requirements, so verify specific instructions with your local assessor. After the Board of Assessment Review denies your grievance (which happens in almost all cases), you'll need to file a Small Claims Assessment Review (SCAR) petition in court, which is where most Suffolk County property owners actually achieve reductions.

What happens after I file a property tax grievance in Suffolk County?

After filing your grievance with the Board of Assessment Review by May 19, 2026, the town board of assessors has 30-60 days to review your case before the final assessment roll is published in July, August, or September. However, Suffolk County towns generally provide only a cursory review of administrative grievances, so you should expect your grievance to be denied. When denied, the next critical step is filing a Small Claims Assessment Review (SCAR) petition in court, which costs $31. For most Suffolk County towns, SCAR petitions must be filed in July or August 2026, but Huntington has a unique September 15-October 15 window. The SCAR hearing will be scheduled approximately one year later, and most cases settle through a conference before the actual hearing.

Why are property taxes so high in Suffolk County compared to other areas?

Suffolk County has some of the highest property taxes in the nation due to a combination of factors. The median annual property tax bill is $10,001, more than four times the national median of $2,400 and ranks 12th among all U.S. counties. High property values on Long Island, which include desirable beachfront locations and proximity to New York City, drive up assessments. Additionally, Suffolk County increased its tax rate by 3.18% in 2026, compounding with township increases. School districts account for the largest portion of property tax bills in New York. Perhaps most significantly, Suffolk County is unique as the only county in the country that does not reassess properties on a regular basis, meaning outdated assessments can persist unless homeowners file grievances to correct them.

What evidence do I need to win a property tax grievance in Suffolk County?

To win a property tax grievance in Suffolk County, you need compelling comparable sales evidence showing your home is overassessed relative to market value. Gather at least 3 comparable home sales from the past 12-24 months that are similar in size, style, age, condition, and location to your property, ideally within the same school district or hamlet. Record each comparable's address, tax map number, sale price, sale date, square footage, and features. Exclude foreclosures, estate sales, and family transfers as these aren't arms-length transactions. Also provide photos documenting your property's condition, repair estimates for any significant defects, and property information verifying square footage and features. Since the valuation date for 2026 grievances is July 1, 2025, focus on sales from mid-2024 through mid-2025.

Can filing a property tax grievance in Suffolk County increase my taxes?

No, filing a property tax grievance in Suffolk County cannot increase your property taxes. New York State law prohibits your assessment from being raised as a result of filing a grievance. The worst-case scenario is that your grievance is denied and your assessment remains exactly the same as before you filed. This no-risk situation makes it advantageous to file a grievance if you believe you're overassessed, especially given Suffolk County's extremely high property tax burden. Many Suffolk County homeowners file grievances annually because the county does not reassess properties on a regular basis, meaning your assessment can remain inflated indefinitely unless you challenge it through the grievance process.

What is the difference between the Board of Assessment Review grievance and a SCAR proceeding in Suffolk County?

The Board of Assessment Review (BAR) grievance is the first administrative step filed by May 19, 2026, where you submit Form RP-524 to your town assessor. However, Suffolk County towns provide only cursory review and deny almost all BAR grievances within 30-60 days. The Small Claims Assessment Review (SCAR) is the critical second step, a judicial proceeding in court where you actually have a meaningful opportunity to achieve a reduction. SCAR petitions must be filed after your BAR denial, typically in July-September 2026 (September 15-October 15 for Huntington properties), with a $31 filing fee. A judicial hearing officer reviews your evidence, and most cases settle through conference before the formal hearing. SCAR is where the vast majority of Suffolk County property tax reductions are actually won.

What property tax exemptions are available to Suffolk County homeowners?

Suffolk County homeowners can qualify for multiple property tax exemptions that can be stacked for significant savings. The STAR program reduces school taxes with Basic STAR for all qualifying homeowners (income under $500,000) and Enhanced STAR for seniors 65+ with income under $98,700, providing $550-$174,490 in relief depending on your town. The Senior Citizens Exemption (SCHE) reduces assessed value up to 50% for seniors with income under $58,399. Veterans receive exemptions up to $54,000 for basic qualification and combat veterans get an additional $36,000, plus disabled veterans can receive up to $180,000 based on disability rating. Cold War veterans who served between 1945-1991 for over 365 days also qualify for 15% exemption up to $54,000. Most exemptions require application by March 1st annually with your town assessor's office.

Official Resources

Suffolk County Real Property Tax Service Agency →

Official county website with links to town assessors and property tax information resources.

New York State Form RP-524 and Instructions →

Download the official Complaint on Real Property Assessment form required to file your Suffolk County grievance.

New York State Property Tax Grievance Information →

Official New York State guidance on grievance procedures, deadlines, and your rights as a property owner.

STAR Exemption Registration Portal →

For state-wide grievance information including New York's assessment ratio and deadlines, see our New York Property Tax Grievance Guide →

Considering professional help with your grievance? Compare pricing, coverage, and pros/cons in our Best Property Tax Grievance Services (2026) or browse side-by-side service comparisons →

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← All New York property tax grievance info

Sources: https://www.farrellfritz.com/insights/tax-tracker/suffolk-county-filing-period-for-real-property-tax-grievances-begins-may-1-2026/ | https://www.tax-rates.org/new_york/suffolk_county_property_tax | https://taxbycounty.com/new-york/suffolk-county | https://www.suffolkcountyny.gov/Departments/Real-Property-Tax-Service-Agency | https://en.wikipedia.org/wiki/Suffolk_County,_New_York | https://www.tax.ny.gov/pdf/current_forms/orpts/rp524_fill_in.pdf | https://ecode360.com/14955383 | https://www.tax.ny.gov/pit/property/star/exemption-amounts/star47.htm

Last verified: 2026-07-24