Nassau County, NY Property Records
Property records in Nassau, New York document ownership, transfers, and key details about real estate within Nassau County. These records may include deeds, mortgages, liens, satisfactions, maps, tax assessment information, legal descriptions, and property ownership history. They are useful for homebuyers, sellers, attorneys, title professionals, researchers, and property owners who need to verify ownership, review transaction history, confirm tax or assessment details, or identify recorded encumbrances.
Official Nassau property records are maintained primarily through Nassau County government offices, including the County Clerk for recorded land documents and county assessment resources for property valuation and tax-related information. Users can access recorded documents through the county’s online land records system by visiting the official Nassau property records search portal. For the most accurate and current information, users should rely on official county sources or contact the appropriate Nassau County office directly.
Nassau County, NY Property Records & Statistics
Nassau County has a median rent of $2,220, more than double the New York median of $928.25 and the national figure of $840.25. Renter-occupied housing accounts for only 15.18% of occupied homes, compared with 20.16% statewide and 21.81% nationally, so the county is overwhelmingly made up of owner-occupied homes.
The median home value is $673,000, roughly four times the state median of $169,000 and the national median of $173,750. The median property tax rate of 1.49% is below the state rate of 2.11% but twice the national rate of 0.74%. Because values are so high, even a rate below the state average produces a substantial tax bill for owners.
Incomes are high as well. The median household income of $145,325 is more than double the state median of $70,656.50 and the national median of $65,108. The unemployment rate of 2.72% is lower than the 2.91% statewide and the 2.87% national figure.
Together, the figures describe a high-cost, high-income, owner-occupied county where homes and rents are far above state and national levels, taxes are significant in dollar terms and unemployment is low.
Median Rent
Median Property Tax Rate
Median Home Value
Median Income
Unemployment Rate
Renter Occupied Housing
Property Records, Assessments, and Valuations in Nassau
Nassau County property records cover tax assessments, recorded deeds and mortgages, valuation data, and judicial foreclosure filings. The county has 426,025 total parcels, including 392,031 residential and 16,794 commercial parcels, with tax records covering 96.9% of the population for the 2025 assessment year. Recorded documents include 738,272 deeds and 888,424 mortgages, and valuation data is available for 375,286 properties.
| Key Data | Details |
|---|---|
| Total Parcels | 426,025 |
| Residential Parcels | 392,031 |
| Commercial Parcels | 16,794 |
| Tax Record Coverage | 96.9% |
| Assessment Year | 2025 |
| Deed Records | 738,272 |
| Mortgage Records | 888,424 |
| Properties with Valuation Data | 375,286 |
| Latest Valuation Update | August 19, 2025 |
| Lis Pendens Records | 202,025 |
Assignment and Release Records
Assignment and release records show what happens to a mortgage after it is recorded. An assignment shows that a mortgage was transferred from one lender or loan holder to another, and a release shows that the loan was satisfied and the lien removed from the property.
Nassau County has 796,270 total assignment and release records, including 237,702 assignment documents recorded from December 14, 1998 to July 22, 2025, 556,970 release documents recorded from October 4, 2001 to July 22, 2025, and 1,598 other documents.
These records help buyers, owners and researchers confirm that earlier mortgages were paid off, follow a loan between lenders and identify liens that may still be open before a sale or refinance. Search them through the Nassau County official records search, and see the Nassau County Clerk mortgages and deeds page for office information.
How to Search Nassau County, NY Property Records
Nassau County property documents are recorded by the Nassau County Clerk at 240 Old Country Road, Mineola, open Monday through Friday, 9:00 AM to 4:30 PM. The Nassau County Clerk mortgages and deeds page explains how deeds and mortgages are recorded, and you can call 516-571-2660 with questions. The Nassau County Clerk online forms page lists forms for common requests.
To search recorded documents online, use the Nassau County official records search. Search by name, document type or date range to find deeds, mortgages, assignments and releases. The county has 738,272 deed records recorded from January 2, 1990 to July 31, 2025.
For assessment details such as ownership, class and assessed value, see the New York State Office of Real Property Tax Services assessment resources. The county's tax records cover 426,025 parcels and reflect the 2025 assessment year.
Start with the property address, owner name or parcel number. Confirm the owner on the assessment roll, then find the deed and any mortgages in the records search. Note the recording dates to follow the ownership history, and call the clerk's office if you need certified copies.
Nassau Registrar of Deeds
The Nassau County Probate Office is located at 240 Old Country Road, Mineola, NY, 11501 and can be reached at 516-571-2660. Office hours are Monday - Friday: 9:00 AM - 4:30 PM. Records can be accessed through i2f.uslandrecords.com or the official website nassaucountyny.gov.
Nassau County Clerk
Nassau County Property Records FAQ
How can I search Nassau County property records by address?
Start with the street address on the local assessment roll, using the New York State assessment resources to find it. For recorded documents, use the Nassau County official records search with the owner's name. If the address does not match, try the parcel number.
How can I find property owners in Nassau County?
Owner names appear on assessment rolls and recorded deeds. The county has 738,272 deed records recorded from January 2, 1990 to July 31, 2025. Search them with the Nassau County official records search and confirm current ownership with the state assessment resources.
How can I check a property's assessed value in Nassau County?
Assessed values are published on the assessment roll. The county's tax records reflect the 2025 assessment year, and the latest assessor update was May 19, 2025. The New York State assessment resources explain how assessments are set and how to file a grievance.
Where can I find Nassau County property tax bills and payment records?
Property tax bills in New York are issued locally, so contact the town or receiver of taxes for the property to ask about bills and payment history. Tax records cover 96.9% of the county's population and reflect tax year 2025. Keep the parcel number or owner name handy.
How can I find deeds and other recorded documents in Nassau County?
The Nassau County Clerk records deeds and mortgages, as explained on the mortgages and deeds page. Search online with the official records search, or visit 240 Old Country Road, Mineola, Monday through Friday, 9:00 AM to 4:30 PM. You can also call 516-571-2660.
Where can I access Nassau County parcel maps and GIS information?
The New York State GIS Program Office offers statewide spatial data and links to parcel mapping resources. Nassau County has 426,025 parcels, including 392,031 residential and 16,794 commercial. Parcel maps help locate properties but are not a legal survey.
How can I check permits and zoning information in Nassau County?
Permits and zoning are handled by each town, city and incorporated village, so contact the local building department for the property. Ask about the zoning district, permit history and any open applications, and provide the address or parcel number to speed up the search.
How can I create a list of property owners in Nassau County?
Lookups work one parcel at a time, so a list usually means gathering assessment roll data and matching it with recorded deeds. The state assessment resources explain where rolls are published. For recorded documents in volume, call the Nassau County Clerk at 516-571-2660.