PROPERTY TAX RESEARCH, MADE SIMPLER
Nassau County, New York
Where to look, which office to contact, and how to request records.
Where to obtain records
Nassau County Treasurer / Tax Records
Official tax-record access and jurisdiction guidanceHow to find the information
Tax Records maintains delinquent Nassau property taxes. Coverage differs: the three towns include general and school taxes; Glen Cove handles its own school delinquencies; Long Beach coverage includes school taxes but only the county portion of general taxes. The county’s online delinquent-payment route excludes tax liens, which require direct handling. Confirm whether the requested record is a returned unpaid bill, sold lien or lien redemption, and check its applicable years.
For existing records, provide the municipality, parcel/Tax ID or SBL (BBL in NYC), tax years, taxing district and desired as-of date. Specify an unpaid collection ledger, dated filed delinquent list, tax-search certificate, foreclosure petition/judgment, auction result, redemption calculation or surplus/proceeds record. Ask which local, county, school, village and special charges are included, whether a charge was re-levied, and how later payments and costs are reflected. Confirm the records custodian and available inspection/electronic-copy process. Ask for existing reports; do not assume a custom countywide extract will be created. Confirm copy, search, certification and extraction charges before ordering.
What to ask for
“I am looking for publicly available delinquent real-property tax records for Nassau County for [tax year]. Which office maintains these records? Is there an online search or downloadable list? If not, how can I request a copy, and what fees apply?”
Have the property address, parcel number, owner name, and tax year ready when searching for a particular property.
County-specific notes
Verified denotes reviewed published access instructions, including explicit staff-only balance/search routes. It does not certify a tested taxpayer query. Reviewed October 28, 2026. Current annual bills, returned unpaid taxes, re-levied school/village charges, dated filed lists, foreclosure proceedings, auctions of acquired land and surplus proceeds have different scope. Confirm recent payments and the exact record date with the custodian. No taxpayer search, public-credential login, account registration, request submission, payment or owner-list republication was performed.
Need help with your research?
Understand tax lists, prepare a records request and check whether a publication is current.