Nassau County and Oyster Bay Town property record for 10 William St, Bethpage, NY 11714 · Last verified June 2026
| Property Type | Duplex |
|---|---|
| Details | 2 ba · 1,899 sqft · built 1977 |
| Lot Size | 0.133 acres (5,800 sqft) |
| Owner | Company Name on File |
| Tax Bill | $6,470 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 49-103-00-0229 |
| Primary APN | 49-103-00-0229 |
|---|---|
| Alternative APNs |
|
| Full Baths | 2 Baths |
|---|---|
| Total Rooms | 6 Rooms |
| Units | 2 Units |
| Stories | 1 Story |
| Building Area | 1,899 sqft Living Area |
| 1st Floor Area | 1,075 sqft |
| Basement Area | 806 sqft |
| Finished Basement | 806 sqft |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1977 |
| Architectural Style | Raised Ranch |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Material | Other |
| Lot Area | 5,800 sqft (0.133 acres) |
| Lot Dimensions | 115 ft deep x 50 ft wide |
| Garage Type | Basement |
| Parking Spaces | 1 Parking Space |
| Balcony Area | 18 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Oil |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 49103 02290 |
|---|---|
| Street Address | 10 WILLIAM ST |
| City | BETHPAGE |
| State | NY |
| Zip | 11714-4407 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Description | 229-230 |
| Legal Subdivision | HERMAN WINDHORST |
| Legal Block | 103 |
| Legal Lot Number | 229-2 |
| Jurisdiction | NASSAU NY |
| Township / Civil Division | OYSTER BAY |
| Census Block Group | 4 |
| Census Block | 4017 |
| Census Tract | 520002 |
Source: Nassau County and Oyster Bay Town records · APN 49-103-00-0229
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 | Company Name on File |
|---|---|
| Mailing Address | 10 WILLIAM ST, BETHPAGE, NY 11714-4407 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Record Updated | 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 | Bethpage Union Free School District (KG - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $534 (-) Land $243 Building $291 | $534,000 (-) | |
| 2025 | $6,470.00 (-3.04%) Senior Citizen's exemption | $534 (-) Land $243 Building $291 | $534,000 (-) |
| 2023 | $6,673.00 Homeowner's exemption Senior Citizen's exemption | $534 Land $243 Building $291 | $534,000 |
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 |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | 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.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 714 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Optimum Communications | Fiber | 8,000 / 8,000 |
| Verizon | Fiber | 2,300 / 2,300 |
| Optimum Communications | Cable | 940 / 35 |
May also be available at this address: T-Mobile USA, Verizon. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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