Nassau County and Oyster Bay Town property record for 3 Williams Ave, Syosset, NY 11791
| Property Type | Single Family Home |
|---|---|
| Details | 5 ba · 2,786 sqft · built 2016 |
| Lot Size | 0.149 acres (6,500 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $1,580,000 (Jul 2025) |
| Tax Bill | $32,592 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 15-123-00-0061 |
| Primary APN | 15-123-00-0061 |
|---|---|
| Alternative APNs |
|
| Full Baths | 5 Baths |
|---|---|
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,786 sqft Living Area |
| Gross Area | 3,132 sqft |
| 1st Floor Area | 1,220 sqft |
| Basement Area | 126 sqft |
| Game Room | Game Room |
| Year Built | Built 2016 |
|---|---|
| Effective Year Built | Effective 2016 |
| Architectural Style | Colonial |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Material | Other |
| Lot Area | 6,500 sqft (0.149 acres) |
| Lot Dimensions | 100 ft deep x 65 ft wide |
| Garage Type | Attached |
| Garage Area | 220 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Frame Porch |
| Porch Area | 56 sqft |
| Patio Area | 1,391 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 15123 00610 |
|---|---|
| Street Address | 3 WILLIAMS AVE |
| City | SYOSSET |
| State | NY |
| Zip | 11791-5005 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TOWN #3 SCH DIST 014 |
| Legal Subdivision | HATHAWAY DOWNS SEC 6 |
| Legal Block | 123 |
| Legal Lot Number | 61 |
| Jurisdiction | NASSAU NY |
| Township / Civil Division | OYSTER BAY |
| Census Block Group | 4 |
| Census Block | 4004 |
| Census Tract | 518700 |
Source: Nassau County and Oyster Bay Town records · APN 15-123-00-0061
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 | 2 Company Names on File |
|---|---|
| Mailing Address | 3 WILLIAMS AVE, SYOSSET, NY 11791-5005 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Living Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jul 24, 2025 · Amount on Record |
| Deed Sale | Jul 24, 2025 · Amount on Record |
| Prior Sale | Sep 27, 2016 · Amount on Record |
| Deed Document Number | 202546010 |
| Deed Book / Page | D14647 / 324 |
| 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 | Syosset Central School District (PK - 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 | $1,051 (+1.25%) Land $329 Building $722 | $1,051,000 (-) | |
| 2025 | $32,592.00 (-0.66%) | $1,038 (+3.9%) Land $329 Building $709 | $1,051,000 (+5.21%) |
| 2023 | $32,807.00 Additional exemption filed | $999 Land $312 Building $687 | $999,000 |
Source: FEMA National Flood Hazard Layer, Nassau County (36059C), as of April 5, 2023 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 360595187004, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 2 (2012–2014) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Mar 2014 |
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Communications Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
Based on FCC filings for 746 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System, water system NY2902831, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | JERICHO WD public/private · serves 58,000 people |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Oct 2023 |
| Lead | 2 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Corrosion control Jul 2023 |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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