Median estimated market value for properties in this county.
AssessorSearch county dataNassau County, NY
Nassau County, NY assessor property search and records
Use this county guide to find official assessor property search resources, recorder and deed links, tax records, GIS parcel maps, permits, and property data insights for Nassau County, New York. Search an address or APN, then jump to official county sources or property tax and value data.
Search a Nassau County address or APN
Official sources
Nassau County assessor, recorder, tax, and parcel map sources
Use this table to find the official county source for assessor property search, recorded documents, property tax, GIS parcel maps, permits, and zoning records.
| Record type | Official source | Notes |
|---|---|---|
| Assessed values | Nassau County Land Records Viewerlrv.nassaucountyny.gov |
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| Deeds and recorded documents | Nassau County Clerk Land Records Searchi2f.uslandrecords.com/NY/Nassau/D/Default.aspx |
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| Property taxes | Nassau County Land Records Viewer (Tax Info)lrv.nassaucountyny.gov |
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| GIS and parcel maps | Nassau County GIS Land Records Viewerlrv.nassaucountyny.gov/map/ |
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| Permits and building records | Town of Hempstead Building Departmenthempsteadny.gov/191/Building-Department |
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| Zoning and land use | Long Island Zoning Atlaswww.longislandzoningatlas.org |
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County data
Nassau County tax rates and property values
County and city-level rollups from AssessorSearch indexed property data. Use these values as directional context, then verify parcel-specific details with the official county sources above.
Median assessed value from county assessment records when available.
AssessorSearch county dataMedian annual property tax amount from indexed tax records when available.
AssessorSearch county dataMedian effective property tax rate calculated from annual tax and value fields.
AssessorSearch county dataCity property data
Top city rollups for estimated value, assessed value, property tax rate, and tax amount.
| City | Median estimated value | Median assessed value | Median effective property tax rate | Median tax amount |
|---|---|---|---|---|
| Massapequa | $799,932 | $482 | 1.66% | $13,472 |
| Valley Stream | $764,802 | $464 | 1.25% | $9,784 |
| Levittown | $737,914 | $427 | 1.65% | $12,151 |
| New Hyde Park | $977,161 | $629 | 1.31% | $13,012 |
| Westbury | $813,933 | $486 | 1.43% | $11,562 |
| Hicksville | $771,217 | $476 | 1.35% | $10,444 |
| Merrick | $888,170 | $532 | 1.71% | $14,915 |
| East Meadow | $811,599 | $492 | 1.40% | $11,171 |
| Plainview | $952,353 | $578 | 1.64% | $15,508 |
| Great Neck | $1,686,068 | $1,083 | 1.12% | $18,791 |
FAQ
Nassau County property records FAQ
Common questions about assessor, deed, tax, GIS, and permit records.
Where can I search Nassau County property records by address?
Use the official Nassau County Land Records Viewer to search Nassau County property records by address or parcel number. Use AssessorSearch property search as a free, easy-to-use option to search Nassau County by address or APN.
How do I find the owners of Nassau County properties?
Use the official Nassau County Land Records Viewer for county ownership and parcel records when owner names are available online. Use AssessorSearch property search as a free, easy-to-use option to look up Nassau County properties by address or APN.
Where can I verify assessed value in Nassau County?
Use the official Nassau County Land Records Viewer for assessed values, parcel details, exemptions, and property characteristics when those records are available online.
Where can I look up Nassau County property tax bills or payments?
Use the official Nassau County Land Records Viewer (Tax Info) for property tax bills, payment history, due dates, or tax collector records.
Where can I find deeds or recorded documents in Nassau County?
Use the official Nassau County Clerk Land Records Search for deeds, mortgages, liens, plats, and other recorded documents. These records are usually separate from assessor property-value records.
Where can I view parcel maps or GIS data in Nassau County?
Use the official Nassau County GIS Land Records Viewer for parcel maps, map layers, boundaries, and GIS context. GIS maps should be treated as reference tools, not legal surveys.
Where can I search permits or zoning in Nassau County?
Use Town of Hempstead Building Department for permits and Long Island Zoning Atlas for zoning or land-use records. City properties may require city-specific permit or planning portals.
Can I build a list of Nassau County property owners?
Use Affix by AssessorSearch for county property owner lists, filters, exports, skip tracing, and outreach workflows.
Related counties
More New York property records
Use related county pages when researching nearby property records or comparing official source patterns.