County Public Records
Nassau County, New York Public Records
Use online searches for Nassau County land records, assessments, tax status, and clerk filings, then route vital records, maps, and civil case requests to the correct office.
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Land Records
Property Tax
Assessment
Business Filings
On this page:
Recording Office
The County Clerk records deeds, mortgages, liens, judgments, and assumed business names in Nassau County.
Parcel Reference
Property searches commonly use Section–Block–Lot (SBL) in Nassau County.
Assessment vs. Taxes
Assessment is maintained at the county level; tax billing and payments route through local receivers of taxes.
Vital Records Path
Birth, death, and marriage certificates are obtained through local town or city clerks or the New York State Health Department.
Start Here
- Start with the County Clerk land records index by party name or document details to locate deeds, mortgages, and liens.
- Search county assessment by Section–Block–Lot (SBL) or address to confirm parcel ownership and values.
- Check property tax status via the appropriate town receiver lookup using SBL or address.
- Use the County Clerk search for assumed business name (DBA) filings by business or owner name.
- Request certified copies from the recording or court clerk when a certified deed, judgment, or filing is required.
Record Routing
- Deeds and Mortgages → County Clerk
- Liens and Judgments → County Clerk
- Property Assessment and Parcel Maps → County Assessor/GIS
- Tax Bills and Payments → Local Tax Collector/Receiver
- Vital Records (Birth, Death, Marriage) → Town/City Clerk or State Health Department
Common Search Inputs
- Party Name (Grantor/Grantee)
- Section–Block–Lot (SBL)
- Property Address
- Document or Instrument Number
- Filing Date Range
- Business or DBA Name
Source Map
| Source / Office | Best For | Search Method | Why It Matters |
|---|---|---|---|
| Nassau County Clerk | Recorded deeds, mortgages, liens, judgments, DBA certificates | Online index by party name, document type, year, or instrument number | New York land documents are recorded with the County Clerk; Nassau searches and copy requests start here. |
| Nassau County Assessment Office | Parcel ownership, assessed values, property class, SBL reference | Online parcel lookup by address or SBL | Nassau maintains countywide assessment data; SBL is the primary parcel identifier for matching to taxes and maps. |
| Town Receiver of Taxes (Nassau County) | Current and delinquent property tax bills and payments | Online tax lookup by SBL, address, or owner | In Nassau County, tax billing and collections are handled by town receivers; payment status is confirmed here. |
| County Clerk (Court Records) | Civil case files and judgment index for county-level state courts | Docket or index search by party name or case/index number | The County Clerk serves as the court records custodian for many civil filings and judgments in Nassau. |
| New York State Department of State | Corporation and LLC registration, entity status | Online entity search by name or ID | Business entities are registered at the state level; use this to verify entity details alongside local DBA filings. |
| New York State Health Department or Local Town/City Clerk | Certified birth, death, and marriage records | Request by name, event date, and place | Vital records are not issued by the County Clerk; obtain certificates from local clerks or the state. |
Nassau County FAQs
How do I search Nassau County land records online?
Use the County Clerk’s index by party name, document type, and date range to locate instrument numbers, then order plain or certified copies as needed.
What identifier should I use for property lookups?
Use the Section–Block–Lot (SBL) number when available; confirm against the street address to ensure the correct parcel.
Where can I confirm property tax payment status for a Nassau parcel?
Check the appropriate town receiver of taxes lookup using SBL or address; assessment data does not confirm payment status.
Who issues certified copies of vital records in Nassau County?
Request certified birth, death, or marriage certificates from the local town or city clerk or the New York State Health Department.