Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site between September 23, 2026 and October 2, 2026.
Nassau County, New York, has about 1.4 million residents (2024 Census Bureau estimate). The title to a parcel in Nassau County is in the deed records of the County Clerk and its taxable value is set by the Real Property Tax Services; what is built on it is a matter for the city or the county. This guide says who keeps each record and where the page for each office is.
This guide covers deeds, assessed values, directory links, city permits, evictions and court cases, records requests and common questions.
Related guides: Nassau County public records, Nassau County arrest records, Nassau County warrants, Nassau County criminal records, Nassau County court records, New York arrest records and New York inmate search.
Deeds, Mortgages and Liens in Nassau County
Deeds, mortgages, liens and easements that affect title to land in Nassau County are recorded by the County Clerk, which indexes them by name and sells copies.
SearchSystems opened and checked the County Clerk's page at nassaucountyny.gov/3998/Land-Records (page title: Land Records | Nassau County, NY), which answered when SearchSystems opened it on September 23, 2026.
Assessed Values and the Tax Roll in Nassau County
What a parcel in Nassau County is taxed on is the business of the Real Property Tax Services, which also keeps the parcel maps. New York property is assessed by each city and town, not the county, except in Nassau and Tompkins counties and New York City.
SearchSystems opened and checked the Real Property Tax Services' page at nassaucountyny.gov/3752/Property-Assessment (page title: Property Assessment | Nassau County, NY), phone (516) 571-1500, 240 Old Country Road 4 th Floor Mineola, NY 11501, Monday - Friday 8 a.m. - 4:30 p.m., which answered when SearchSystems opened it on September 23, 2026.
More Official Property and Land Records Pages for Nassau County
The SearchSystems directory, online since 1997, lists the official pages for Nassau County and New York. These property pages from its Nassau County listing were opened again on October 2, 2026 and each one still answers:
- Assessment, Nassau County, NY (nassaucountyny.gov)
- My Nassau Property (lrv.nassaucountyny.gov)
Permits and City Records in the Cities of Nassau County
Building permits, zoning and code cases inside a city are the city's own records. The cities in Nassau County with a SearchSystems guide to their offices, with the city page SearchSystems verified:
- Hempstead: the city hall page SearchSystems verified is at hempsteadny.gov/642/Town-Hall (verified September 25, 2026).
- Freeport: the city hall page SearchSystems verified is at freeportny.gov, phone 516-377-2252 (verified September 25, 2026).
- Valley Stream: the city hall page SearchSystems verified is at valleystreamny.gov/, phone 516-592-5139 (verified September 25, 2026).
- Long Beach: the city hall page SearchSystems verified is at longbeachny.gov/contact, phone (516) 431-1000 (verified September 25, 2026).
- Glen Cove: the city hall page SearchSystems verified is at glencoveny.gov/venue/city-hall-main-chambers (verified September 25, 2026).
- Garden City: the city hall page SearchSystems verified is at gardencityny.net/142/Contact (verified September 25, 2026).
- Lynbrook: the city hall page SearchSystems verified is at lynbrookvillage.gov/contact-us, phone (516) 599-8300 (verified September 25, 2026).
- Westbury: the city hall page SearchSystems verified is at villageofwestbury.gov/contact, phone (516) 334-1700 (verified September 25, 2026).
- Malverne: the city hall page SearchSystems verified is at malvernevillage.gov/contact-us, phone (516) 599-1200 (verified September 26, 2026).
Evictions and Court Cases About Land in Nassau County
An eviction is a court case in the city, town and village courts, and so is a foreclosure, a lien dispute or a quiet title suit, in the Nassau County Supreme and County Courts; the court file is public unless sealed.
Asking a County Office for a Record
Under the Freedom of Information Law a county office must answer a request within 5 business days, at least with an acknowledgment and a date for the full answer, and it may charge copying at 25 cents a page. The county records request page SearchSystems verified is at nassaucountyny.gov/DocumentCenter/View/3761/Foil-Request-Form-2018 (page title: COUNTY OF NASSAU STATE OF NEW YORK APPLICATION FOR PUBLIC ACCESS TO RECORDS).
Frequently Asked Questions
Who records deeds in Nassau County?
The County Clerk, at nassaucountyny.gov/3998/Land-Records. Deeds, mortgages and liens on land in Nassau County are filed there, and the Real Property Tax Services (nassaucountyny.gov/3752/Property-Assessment) has the assessment records.
Who sets the assessed value of a property in Nassau County?
The Real Property Tax Services, whose page SearchSystems verified is at nassaucountyny.gov/3752/Property-Assessment.
Where are evictions from Nassau County filed?
In the city, town and village courts. The file is public unless the court seals it.
How is property assessed in New York?
New York property is assessed by each city and town, not the county, except in Nassau and Tompkins counties and New York City.
Is this the official Nassau County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.