Nassau County Property Appraiser & Tax Assessor
Real property appraisal records, parcel search lookup, property tax rates, and assessment protest deadlines for Nassau County, New York.
Nassau County Assessor's Office Information
Nassau County Appraisal & Assessment Office, Mineola, NY 36001
Get Driving Directions ↗Monday - Friday: 8:00 AM - 4:30 PM (Local Time)
Closed on state & federal holidays.
(516) 571-2660
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Nassau County Property Tax Calculator
Estimated using Nassau County's effective tax rate of 1.51% (Assessment ratio: 100%)
Appealing Your Nassau County Assessment
Grievance Day (typically fourth Tuesday in May in towns; varies in cities).
Under New York property tax law, property owners in Nassau County have the legal right to challenge an assessed valuation that exceeds fair market value, is unequally appraised compared to neighboring properties, or contains clerical errors.
Contact the Nassau County Assessor's Office to review your property record card, verify square footage, and present recent comparable sales (comps).
If informal review does not resolve the valuation, file a written notice of appeal with the Board of Assessment Review (BAR) before the statutory deadline.
Was Your Nassau County Home Over-Assessed This Year?
Studies show up to 30% to 60% of US residential properties are overvalued by automated municipal algorithms. Protesting your assessment before the statutory deadline can lower your tax bill by an average of $1,100/year.
Nassau County Homestead Exemptions & Tax Relief
Homeowners in Nassau County who occupy their home as their permanent primary residence may qualify for property tax reductions under state and local homestead programs:
School Tax Relief (STAR) program provides direct credit or exemption on school property taxes for owner-occupied primary homes.
Enhanced STAR provides expanded school tax savings up to $84,000+ for seniors 65+. Alternative Veterans Exemption deducts 15% to 25% of assessment.
Need Deed, Lien, or Title Records for Nassau County?
While the Property Appraiser values real estate for taxation, official legal property transfers, warranty deeds, mortgages, and marriage records in Nassau County are maintained by the County Clerk & Recorder.
Frequently Asked Questions
Where is the Nassau County Property Appraiser office located?
The official Nassau County property appraisal and tax assessment office is located at Nassau County Appraisal & Assessment Office, Mineola, NY 36001. Operating hours are typically Monday - Friday: 8:00 AM - 4:30 PM (Local Time). You can reach the customer service staff by phone at (516) 571-2660.
What is the property tax rate in Nassau County, NY?
The average effective property tax rate in Nassau County is approximately 1.51%. For a home with the median county market value of $481.000, the estimated annual property tax is about $7263 per year.
How do I search for a property or parcel in Nassau County?
You can look up property record cards, assessed valuations, ownership history, and parcel boundary maps online through the official Nassau County parcel search portal: https://www.nassaucountyny.gov/assessor/parcel-search.
When is the deadline to appeal my property assessment in Nassau County?
Property valuation protests and appeals in Nassau County must be submitted by: Grievance Day (typically fourth Tuesday in May in towns; varies in cities). Appeals are formally reviewed and heard by the Board of Assessment Review (BAR).
How does the Homestead Exemption work in Nassau County?
School Tax Relief (STAR) program provides direct credit or exemption on school property taxes for owner-occupied primary homes. Additional exemptions are available for senior citizens (65+) and disabled military veterans (Enhanced STAR provides expanded school tax savings up to $84,000+ for seniors 65+. Alternative Veterans Exemption deducts 15% to 25% of assessment.).
Adjacent & Neighboring County Appraisers
County Overview
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