NEW YORK · OFFICIAL ASSESSMENT DATA

Nassau County, New York residential parcels

Explore houses, townhomes and condo units by area.

Official assessment values · Tax parcel IDs · Nassau County parcel outlines

Uses official 2025 Nassau County roll full market values from the state extract, matched to Nassau’s current parcel outlines. Separate Glen Cove and Long Beach city rolls are excluded to avoid mixing their valuations or counting the same county parcel twice. The boundary layer reports roll year 2026; its values are not substituted for the 2025 assessment values.

Properties on the map

Outline colors: ● Over $3M to $5M · ● Over $5M to $10M · ● Over $10M. Shared-lot color follows its highest selected property value.

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The opening view fits at least 70% of selected lot locations. All selected outlines stay loaded. Use Show all to see every matching lot.

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Property / unit	Parcel ID	Area	Property type	Market value

How to read this map

Maps 1,417 residential tax parcels above $3 million, 301 above $5 million and 38 above $10 million. Thresholds overlap and each tax parcel is counted once.

Includes residential classes 210, 215, 240, 250 and 260, covering homes, townhomes, estates and condos recorded under those classes. A reliable separate condo flag is unavailable in this extract; apartment-building classifications are excluded.

Exact section, block and lot IDs connect the assessments to boundaries. Mapped acreage is calculated from the outlines and is approximate; it does not represent apartment floor area or a survey.

111 records are omitted because a reliable boundary or classification match is unavailable.

Omitted parcel IDs (111)

280600_23.-F-412.A, 281000_59.-82-61.A, 282023_40.-18102-301, 282023_41.-90-96, 282023_41.-F-3029.A/8888, 282023_41.-H01-103, 282043_58.-83-1, 282043_58.-83-105/8888, 282043_58.-83-6, 282089_39.-465-27.A, 282089_58.-157-12, 282089_60.-14-34, 282089_60.-23-44, 282207_3.-13901-421.B, 282207_3.-13901-52.A, 282207_3.-167-624.A, 282207_3.-167-627, 282207_3.-195-42.A, 282207_3.-196-1.A, 282207_3.-196-24.B, 282207_3.-196-42.A, 282217_1.-176-26, 282217_1.-196-5, 282217_1.-42-14, 282217_1.-63-29.D, 282217_1.-63-36.A, 282217_1.-63-37.A, 282217_1.-63-43.A, 282217_1.-63-44.A, 282217_1.-63-82.A, 282217_1.-63-83.A, 282231_17.-15-3.A, 282231_17.-15-9.A, 282231_17.-19-16.A, 282231_19.-A-548.A, 282231_19.-A-559.A, 282231_19.-A-604.B, 282231_19.-A-613.A, 282231_19.-C-2.B, 282231_19.-C-3.B, 282231_19.-D-209.A, 282231_19.-D-218.B, 282231_19.-D-220.B, 282231_19.-D-225.A, 282231_19.-D-46.B, 282233_3.-182-7, 282237_3.-182-450, 282237_3.-182-78, 282237_3.-182-88, 282237_3.-182-95, 282237_3.-4-607, 282237_3.-4-620, 282237_3.-4-628, 282245_20.-73-6, 282251_5.-163-16, 282251_5.-163-7, 282289_3.-28-305, 282403_16.-C-393.A, 282403_18.-C-528.C, 282403_18.-D-35, 282407_26.-A-25, 282407_26.-A-280, 282407_26.-A-424, 282407_26.-A-69/8888, 282407_26.-A-715, 282413_26.-A-1144.A/8888, 282413_26.-A-1265, 282415_20.-J07-949, 282415_22.-28-22.A, 282415_22.-F02-589, 282415_22.-F02-622, 282415_22.-F02-630, 282415_22.-F02-667, 282415_22.-F02-668, 282415_22.-F02-670, 282415_22.-F02-677, 282415_22.-F02-678, 282415_22.-F02-680, 282415_22.-F02-683, 282415_22.-F02-684, 282415_22.-F02-688, 282415_22.-J-1130.D, 282415_22.-K-1333.D, 282415_22.-K-231.B, 282419_26.-A-1286.A/8888, 282419_27.-G-1549.A, 282421_23.-B-404.D, 282421_23.-H-12.B, 282421_23.-K-534, 282421_23.-K-647, 282421_23.-K-662, 282421_24.-24-9.A/8888, 282425_29.-L-29.A, 282425_29.-L-40, 282425_29.-L-661, 282425_29.-N-1.D, 282425_29.-N-209.B, 282425_29.-N-238.B, 282427_22.-29-5.A, 282427_24.-24-15.B, 282427_24.-B-70.H, 282427_24.-E-164.C, 282429_16.-A-1006, 282429_25.-58-55.B, 282429_25.-58-57.A, 282429_25.-58-59.A, 282431_17.-15-3.B, 282431_17.-19-15.B, 282431_19.-A-558.B, 282431_19.-A-559.B, 282489_24.-B-86.A/8888

Sources: official assessment roll and Nassau official parcel GIS.