Nassau County Parcel Viewer

Search for Nassau County NY parcel information. A parcel search can provide information on parcel boundaries, property lines, parcel lines, parcel divisions, unclaimed parcels, property taxes, property appraisals, parcel appraisal values, public parcels, genealogical research, property owners, and property sales.


The Assessor Office works at the county or local level to determine the value of the area's taxable property. As part of this job, Assessors conduct property appraisals and may assess the property taxes for every parcel. Assessor Offices maintain information on these parcels, including parcel maps, boundary lines, and parcel divisions. These parcel viewers may also provide information on appraisal values, zoning, and property tax assessments. Parcel viewers can also be used to locate local unclaimed parcels, public property, and look up property owner information. The Assessor Office may provide an online parcel viewer to look up parcel information.

Freeport Assessor Freeport NY 46 North Ocean Avenue 11520 516-377-2256

Nassau County Assessor's Office Mineola NY 240 Old Country Road 11501 516-571-1500


The Clerk Office maintains public records for a county or local government, including vital documents and property-related records. Clerks keep documents on every parcel in their jurisdiction, which can include parcel viewers that show parcel maps, boundary lines, and divisions between parcels. These parcel viewers may also provide information on property appraisal values, zoning boundaries, and property tax assessments, and they can be used to locate unclaimed parcels, public property, and look up property owner information. Parcel viewer information may be available through the Clerk Office website.

Brookville Clerk East Norwich NY 104 Susan Cove 11732 516-922-8198

East Rockaway Clerk East Rockaway NY 376 Atlantic Avenue 11518 516-887-6312

Glen Cove Clerk Glen Cove NY 9 Glen Street 11542 516-676-2000

Hempstead Town Clerk Hempstead NY 1 Washington Street 11550 516-489-5000

Kensington Village Clerk Great Neck NY 2 Nassau Drive 11021 516-482-4409

Malverne Clerk Malverne NY 99 Church Street 11565 516-599-0722

Matinecock Village Clerk Locust Valley NY 63 Midway Avenue 11560 516-671-7790

Nassau County Clerk Westbury NY 1200 Old Country Road 11590 516-493-3900

Nassau County Clerk Mineola NY 1550 Franklin Avenue 11501 516-571-4010

New Hyde Park Clerk New Hyde Park NY 1420 Jericho Turnpike 11040 516-354-0022

North Hempstead Town Clerk Manhasset NY 200 Plandome Road 11030 516-869-7650

North Hills Clerk Roslyn NY 1 Shelter Rock Road 11576 516-365-8857

Old Westbury Village Clerk Old Westbury NY 1 Store Hill Road 11568 516-626-0800

Oyster Bay Town Clerk Massapequa NY 977 Hicksville Road 11758 516-797-7960

Oyster Bay Town Clerk Oyster Bay NY 54 Audrey Avenue 11771 516-624-6320

Plandome Village Clerk Manhasset NY 65 South Drive 11030 516-627-1748

Valley Stream Clerk Valley Stream NY 123 South Central Avenue 11580 516-825-4200

Westbury Village Clerk Westbury NY 235 Lincoln Place 11590 516-334-1700


An Archive preserves records with historical significance for a local area, which can include parcel records. Some Archives may provide parcel information in the form of a parcel viewer, which can be used to look up historic parcel boundaries, ownership information for any parcel in the area, and parcel divisions over time. These records may also list historical property tax rates or property value assessments, including sales, as well as changes to parcel maps over time. These records can be useful for conducting genealogical research. Archives may provide online access to their parcel viewers.

Cold Spring Harbor Laboratory Library and Archive Cold Spring Harbor NY 1 Bungtown Road 11724 516-367-6872

Valley Stream National Archive Valley Stream NY 200 East Merrick Road 11580 516-872-9700


The Town or City Hall provides municipal services for their town or city, including maintaining property-related documents. These records can include parcel viewers, which contain information on every parcel in the town or city. These parcel maps can include information on parcel boundaries, unclaimed parcels, public property, and parcel divisions. Town and City Halls may also have records on property appraisals, zoning boundaries, current and former property owners, and property taxes, which may be presented in the parcel viewer. This information is often available to the public on the Town or City Hall website.

Glen Cove City Hall Glen Cove NY 9 Glen Street 11542 516-676-2000

Hempstead Town Hall Hempstead NY 350 Front Street 11550 516-489-5000

Levittown Town Hall Hicksville NY 201 Levittown Parkway 11801 516-933-6400

Long Beach City Hall Long Beach NY 1 West Chester Street 11561 516-431-1000

North Hempstead Town Hall Manhasset NY 220 Plandome Road 11030 516-869-6311

Oyster Bay Town Hall Oyster Bay NY 74 Audrey Avenue 11771 516-624-6333

Oyster Bay Town Hall Massapequa NY 977 Hicksville Road 11758 516-797-7900


The Recorder of Deeds keeps real estate ownership documents in order to ensure the accuracy of property, land, and parcel records. Recorders of Deeds have records on every parcel under their authority, and they may provide a parcel viewer to look up this information. Parcel viewers provide information on parcel boundaries, property owners, unclaimed parcels, and parcel divisions, and this information may be presented in a parcel map. Recorders of Deeds may also have information on property appraisals, property taxes, and zoning boundaries. They may provide online access to parcel information on the Recorder of Deeds website.

Nassau County Recorder of Deeds Mineola NY 240 Old Country Road 11501 516-571-1444