Nassau County Public Records /Nassau County Property Records

Nassau County Property Records

What Is Nassau County Property Records

Property records in Nassau County, New York, are official documents that establish, transfer, and encumber interests in real property — including land, residential structures, and commercial buildings — located within the county's jurisdiction. These records serve as the legal foundation for determining ownership history (commonly referred to as the chain of title), providing constructive public notice of all recorded interests, and protecting the rights of property owners, lienholders, and prospective buyers. Under New York Real Property Law § 291, every conveyance of real property must be recorded in the office of the county clerk of the county where the property is situated to be effective against subsequent purchasers or encumbrancers in good faith.

In Nassau County, the Nassau County Clerk's Office serves as the official repository for recorded land instruments. Property records facilitate real estate transactions, support mortgage lending, enable title searches, and allow government agencies to assess and tax real property accurately. The Nassau County Clerk maintains a searchable index of recorded documents that members of the public may access in person or through the county's online portal.

Nassau County Clerk's Office 240 Old Country Road, Mineola, NY 11501 (516) 571-2664 Nassau County Clerk

Are Property Records Public Information In Nassau County?

Property records in Nassau County are public information under both state statute and longstanding legal principle. Pursuant to New York Public Officers Law § 84–90, commonly known as the Freedom of Information Law (FOIL), all government records — including recorded land instruments — are presumptively open to public inspection unless a specific statutory exemption applies. No exemption currently covers standard property ownership or transfer documents.

The legal basis for public access rests on several pillars. First, New York Real Property Law § 291 mandates that conveyances be recorded precisely so that the public has constructive notice of all interests in land. Second, transparency in land ownership serves the broader public interest by deterring fraudulent transfers, supporting accurate tax assessment, and enabling informed real estate decisions. Third, any member of the public — whether a prospective buyer, title examiner, journalist, or private citizen — may inspect and obtain copies of property records without demonstrating a specific legal interest or providing a reason for the request. The Nassau County Clerk's Office is obligated to make these records available during regular business hours.

How To Search Property Records in Nassau County in 2026

Members of the public may search Nassau County property records through several official channels. The process is straightforward whether conducted in person or remotely.

In-Person Search at the Nassau County Clerk's Office:

Visit the Recording Division at 240 Old Country Road, Mineola, NY 11501, during public counter hours: Monday through Friday, 9:00 a.m. to 4:30 p.m.
Request access to the public index terminals located in the recording room.
Search by grantor/grantee name, parcel address, or Section/Block/Lot (SBL) number.
Staff members are available to assist with navigating the index, though they are not permitted to provide legal advice.
Certified and plain copies of recorded instruments may be ordered at the counter; fees are established by New York County Law and the Nassau County fee schedule.

By Mail:

Submit a written request identifying the document by grantor/grantee name, recording date, or instrument number.
Include the applicable copy fee (currently $1.25 per page for plain copies; $5.00 for a certified copy plus $1.25 per page) and a self-addressed stamped envelope.
Mail requests to: Nassau County Clerk, Recording Division, 240 Old Country Road, Mineola, NY 11501.

Online:

Access the Nassau County Clerk's online land records search portal to retrieve index information and document images without visiting the office.

How To Find Property Records in Nassau County Online?

The Nassau County Clerk's Office provides an internet-accessible land records database that allows users to search recorded instruments from any location. Members of the public may use the Nassau County Clerk's land records search portal to query the index by party name, document type, recording date range, or instrument number.

For property assessment and tax map data, the Nassau County Department of Assessment maintains a separate online database. Users may search by address or SBL number to retrieve assessed values, exemption information, and property characteristics.

Nassau County Department of Assessment 240 Old Country Road, 4th Floor, Mineola, NY 11501 (516) 571-1500 Nassau County Department of Assessment

The Nassau County Geographic Information System (GIS) portal provides interactive tax maps that can be cross-referenced with recorded instruments. Property owners and researchers may also access deed and mortgage history through third-party title plant services that index Nassau County records, though the official county portals remain the authoritative source.

How To Look Up Nassau County Property Records for Free?

Several no-cost options are currently available for locating Nassau County property records without incurring fees.

Nassau County Clerk's Public Index Terminals: In-person use of the index terminals at the Recording Division is free of charge. Users may view document images on screen at no cost; fees apply only when printed or certified copies are requested.
Nassau County Department of Assessment Online Search: The assessment database is freely accessible online and provides ownership information, property descriptions, and assessed values at no charge.
Nassau County GIS Tax Map Viewer: The county's publicly available GIS portal allows free parcel-level searches, displaying ownership names, lot dimensions, and SBL numbers.
New York State Archives: Certain historical land records predating the county clerk's current index may be available through the New York State Archives at no cost for online viewing.
Public Libraries: The Nassau County public library system provides free access to genealogical and property research databases, including some that index historical deed records.

Fees are assessed only when physical copies or certified documents are requested from the Nassau County Clerk's Office.

What's Included in a Nassau County Property Record?

Nassau County property records encompass a broad range of instruments and data fields that collectively document the legal and physical status of real property. Under New York Real Property Law, recorded instruments must contain specific information to be accepted for recording.

Typical documents maintained in the Nassau County Clerk's Recording Division include:

Deeds (warranty deeds, quitclaim deeds, executor's deeds) — identifying grantor, grantee, legal description, and consideration
Mortgages and Mortgage Satisfactions — recording the lender's security interest and its discharge
Assignments of Mortgage — documenting transfers of mortgage interests between lenders
Lis Pendens — notices of pending litigation affecting title
Judgments — court-ordered liens against real property
Easements and Covenants — recorded restrictions and rights affecting land use
Subdivision Maps — filed plats establishing lot boundaries and street dedications
UCC Fixture Filings — security interests in fixtures attached to real property

Each recorded instrument typically contains:

Names of all parties (grantor/grantee or mortgagor/mortgagee)
Legal description of the property (metes and bounds or lot and block reference)
Section/Block/Lot (SBL) number assigned by the Nassau County Department of Assessment
Recording date, instrument number, and liber/page reference
Notarization and acknowledgment information
Transfer tax information (where applicable under New York Tax Law § 1402)

The Nassau County Department of Assessment separately maintains property record cards containing physical characteristics such as building square footage, construction type, year built, and lot size.

How Long Does Nassau County Keep Property Records?

Nassau County retains property records in accordance with the New York State Archives Local Government Records Retention and Disposition Schedule (LGS-1), which establishes minimum retention periods for county government records. Under current state mandate, recorded land instruments — including deeds, mortgages, and related documents — are classified as permanent records and must be retained indefinitely. This requirement reflects the enduring legal significance of title documents, which may be relevant to ownership disputes arising decades or centuries after original recording.

Specific retention guidelines include:

Deeds and conveyances: Permanent retention
Mortgages and satisfactions: Permanent retention
Judgment dockets: Permanent retention
Subdivision maps and filed plats: Permanent retention
Lis pendens: Minimum 10 years after expiration or discharge; many offices retain permanently
Assessment records (property record cards): Minimum 6 years after superseded; historical cards often retained permanently

The Nassau County Clerk's Office has digitized a substantial portion of its historical land records, and microfilm backups are maintained as required by the New York State Archives. Members of the public seeking records predating the digital index may request assistance locating older liber and page references.

How To Find Liens on Property In Nassau County?

Liens against real property in Nassau County are recorded as public instruments and may be identified through a systematic search of multiple official indexes.

Nassau County Clerk's Recording Division (Judgment and Lien Index):

Members of the public may search the judgment docket and lien index at the Recording Division counter or through the online portal.
Search by property owner name or SBL number to identify recorded judgments, federal tax liens, mechanics' liens, and lis pendens notices.
Federal tax liens filed by the Internal Revenue Service against Nassau County property owners are recorded with the Nassau County Clerk pursuant to 26 U.S.C. § 6323.

Nassau County Supreme Court — Civil Term:

Judgment creditors must file transcripts of judgment with the Nassau County Clerk to create a lien on real property. The Supreme Court clerk's office can confirm the existence of a judgment before the transcript is filed.

Nassau County Supreme Court, Civil Term 100 Supreme Court Drive, Mineola, NY 11501 (516) 493-3400 Nassau County Supreme Court

New York State Department of Taxation and Finance (State Tax Warrants):

State tax warrants filed against Nassau County property owners are recorded with the Nassau County Clerk and are searchable through the same land records index.

Additional lien sources to search:

Homeowners association (HOA) liens recorded as covenants or notices with the County Clerk
Municipal water and sewer liens filed by Nassau County or individual municipalities
Environmental liens recorded pursuant to state environmental remediation statutes

What Is Property Owner Rule In Nassau County?

Property ownership in Nassau County is governed by New York State real property law, local zoning ordinances, and Nassau County administrative regulations. Under New York Real Property Law, any individual, corporation, partnership, trust, or governmental entity may hold title to real property in Nassau County, subject to applicable restrictions.

Key ownership regulations currently in effect include:

Recording Requirement: As established by New York Real Property Law § 291, a deed or conveyance does not provide constructive notice to subsequent purchasers until it is recorded with the Nassau County Clerk. An unrecorded deed may be void against a subsequent good-faith purchaser who records first.
Transfer Disclosure: Sellers of one-to-four family residential properties are required under New York Real Property Law § 462 to provide buyers with a property condition disclosure statement or a $500 credit at closing.
Real Property Transfer Tax: All conveyances of real property in Nassau County are subject to the New York State real estate transfer tax under New York Tax Law § 1402, currently imposed at a rate of $2.00 per $500 of consideration (or fraction thereof). Additional mansion tax provisions apply to residential transfers of $1,000,000 or more.
Zoning and Land Use: The Nassau County Department of Planning and the individual incorporated villages and cities within Nassau County regulate permissible uses of real property through zoning codes. Property owners must comply with applicable zoning classifications before altering land use.
Adverse Possession: Under New York Real Property Actions and Proceedings Law § 501, a party may acquire title to real property through adverse possession after maintaining open, notorious, continuous, and hostile possession for a statutory period of ten years.

Nassau County Department of Planning 1194 Prospect Avenue, Westbury, NY 11590 (516) 571-4034 Nassau County Department of Planning

Property owners disputing assessed values may file a grievance with the Nassau County Assessment Review Commission during the annual grievance period.

Nassau County Assessment Review Commission 240 Old Country Road, Mineola, NY 11501 (516) 571-3214 Nassau County Assessment Review Commission