Nassau County and Oyster Bay Town property record for 21 Sylvia Ln, Plainview, NY 11803 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bathrooms | 1.5 Baths |
| Year Built | Built 1958 |
| Square Footage | 1,596 sqft Living Area |
| Lot Size | 7,000 sqft (0.161 acres) |
| Garage | Attached, 240 sqft |
| Occupancy | Owner Occupied |
| Last Sale | $107,500 (1997) |
| Tax Bill | $17,098.00 (2025) |
| Primary APN | 12-405-00-0057 |
|---|---|
| Alternative APNs |
|
| Full Baths | 1.5 Baths |
|---|---|
| Partial Baths | 1 Partial Baths |
| Total Rooms | 5 Rooms |
| Building Area | 1,596 sqft Living Area |
| Gross Area | 1,836 sqft Gross Area |
| 1st Floor | 1,005 sqft 1st Floor |
| Basement Area | 503 sqft Basement |
| Finished Basement | 503 sqft Finished |
| Stories | 1 Stories |
| Year Built | Built 1958 |
|---|---|
| Effective Year Built | Effective 1958 |
| Architectural Style | Split Level Style |
| Exterior Material | Aluminum/Vinyl Exterior |
| Construction Type | Frame Construction |
| Roof Material | Other (not Classified) Roof |
| Lot Area | 7,000 sqft (0.161 acres) |
| Depth X Width | 100 ft x 70 ft Depth x Width |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 240 sqft Garage |
| Balcony Area | 76 sqft Balcony |
| Porch Area | 12 sqft Porch |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Central Heating |
| Heating Fuel | Oil Heating Fuel |
| Sewage | Municipal Sewage |
| Water Source | Commercial Water Source |
| Account Number | 12405 00570 |
|---|---|
| Street Address | 21 SYLVIA LN |
| City | PLAINVIEW |
| State | NY |
| Zip | 11803-4819 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | TOWN #3 SCH DIST 019 |
| Legal Block | 405 |
| Legal Lot Number | 57 |
| Jurisdiction | NASSAU NY |
| Minor Civil Division | OYSTER BAY |
| Census Blockgroup | 2 |
| Census Block | 2008 |
| Census Tract | 519602 |
Source: Nassau County and Oyster Bay Town records · APN 12-405-00-0057
Assessment roll updated June 17, 2026 · Last verified June 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 21 SYLVIA LN, PLAINVIEW, NY 11803-4819 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Aug 20, 1997 · Amount on Record |
| Deed Sale | Aug 20, 1997 · Amount on Record |
| Deed Book / Page | 10811 / 567 |
| Record Refreshed | Sep 20, 2026 |
Source: Nassau County and Oyster Bay Town records · Assessment roll updated June 17, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | New York |
| County | Nassau County |
| County Subdivision | Oyster Bay Town |
| Unified School District | Plainview-Old Bethpage Central School District (KG - 12) |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $552 (-6.44%) Land $288 Building $264 | $552,000 (-6.44%) | |
| 2025 | $17,098.00 (+6.59%) | ||
| 2023 | $16,041.00 Additional exemption filed | $590 Land $308 Building $282 | $590,000 |
Source: FEMA National Flood Hazard Layer, Nassau County (36059C), updated April 5, 2023 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
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