Nassau County and North Hempstead Town property record for 257 Cornwell Ave, Williston Park, NY 11596
| Property Type | Single Family Home |
|---|---|
| Details | 1 ba · 2,162 sqft · built 1948 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $471,000 (Oct 2002) |
| Tax Bill | $12,315 (2025) |
| Deeds & Mortgages | Mar 2026 Transfer Sep 2025 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 09-128-00-0086 |
| Primary APN | 09-128-00-0086 |
|---|---|
| Alternative APNs |
|
| Full Baths | 1 Bath |
|---|---|
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 2,162 sqft Living Area |
| 1st Floor Area | 826 sqft |
| Year Built | Built 1948 |
|---|---|
| Effective Year Built | Effective 1948 |
| Architectural Style | Colonial |
| Exterior Material | Brick/Stone |
| Construction Type | Frame |
| Foundation Type | Concrete |
| Roof Material | Other |
| Lot Area | 5,000 sqft (0.115 acres) |
| Lot Dimensions | 100 ft deep x 50 ft wide |
| Garage Type | Detached |
| Garage Area | 320 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Frame Porch |
| Porch Area | 15 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 09128 00860 |
|---|---|
| Street Address | 257 CORNWELL AVE |
| City | WILLISTON PARK |
| State | NY |
| Zip | 11596-1047 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TOWN #2 SCH DIST 009 |
| Legal Subdivision | WILLISTON GDN ESTS SEC 2 |
| Legal Block | 128 |
| Legal Lot Number | 86 |
| Jurisdiction | NASSAU NY |
| Township / Civil Division | NORTH HEMPSTEAD |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 303301 |
257 Cornwell Ave is held in a trust since February 2021.
Source: Nassau County and North Hempstead Town records, as of June 17, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 257 CORNWELL AVE, WILLISTON PARK, NY 11596-1047 |
| Owner Type | Company |
| Vesting | Trust, Irrevocable Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Mar 10, 2026 | Intrafamily Transfer, Transfer MULTIPLE |
| Sep 10, 2025 | Intrafamily Transfer, Transfer UNKNOWN, MULTIPLE |
| Feb 16, 2021 | Intrafamily Transfer, Transfer |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 18, 2002 · Amount on File |
| Deed Sale | Oct 18, 2002 · Amount on File |
| Prior Sale | Jul 7, 2000 · Amount on File |
| Deed Book / Page | 11540 / 546 |
| Last Transfer Date | Feb 14, 2021 |
| Transfer Doc | 0140380886 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | NASSAU NY |
| Recording Date | Mar 10, 2026 |
| Property Address | 257 CORNWELL AVE, WILLISTON PARK, NY 11596-1047 |
| Document Number | D147270921 |
| Book / Page | D14727 / 921 |
| Map Reference | MAP 2451 |
| Instrument Date | Nov 20, 2025 |
| Instrument | 2026-00015708 |
| Transaction Type | Transfer |
| Record Updated | Apr 1, 2026 |
| Title Company | MULTIPLE |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 257 CORNWELL AVE, WILLISTON PARK, NY 11596-1047 |
| Name | Verified Name |
|---|---|
| Relationship | Irrevocable Trust |
| Address | 257 CORNWELL AVE, WILLISTON PARK, NY 11596-1047 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | NASSAU NY |
| Recording Date | Sep 10, 2025 |
| Property Address | 257 CORNWELL AVE, WILLISTON PARK, NY 11596-1047 |
| Document Number | D146640233 |
| Book / Page | D14664 / 233 |
| Map Reference | MAP 2451 |
| Instrument Date | Aug 4, 2025 |
| Instrument | 2025-00056839 |
| Transaction Type | Transfer |
| Record Updated | Oct 23, 2025 |
| Title Company | UNKNOWN, MULTIPLE |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 257 CORNWELL AVE, WILLISTON PARK, NY 11596-1047 |
| Name | Verified Name |
|---|---|
| Address | 257 CORNWELL AVE, WILLISTON PARK, NY 11596-1047 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | NASSAU NY |
| Recording Date | Feb 16, 2021 |
| Property Address | 257 CORNWELL AVE, WILLISTON PARK, NY 11596-1047 |
| Document Number | 0140380886 |
| Book / Page | 14038 / 886 |
| Map Reference | MAP 2451 |
| Instrument Date | Feb 14, 2021 |
| Instrument | 2021-017917 |
| Transaction Type | Transfer |
| Record Updated | May 14, 2021 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 257 CORNWELL AVE, 257, WILLISTON PARK, NY 11596-1047 |
| Name | Verified Name |
|---|---|
| Address | 257 CORNWELL AVE, WILLISTON PARK, NY 11596-1047 |
The 2025 property tax bill for 257 Cornwell Ave was $12,315.
Source: Nassau County and North Hempstead Town assessment roll, as of June 17, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Nassau County |
| County Subdivision | North Hempstead Town |
| Municipality | Williston Park Village |
| Unified School District | Herricks Union Free School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $636 (+3.58%) Land $298 Building $338 | $636,000 (+3.58%) | |
| 2025 | $12,315.00 | $614 Land $288 Building $326 | $614,000 |
| 2023 | $12,605.00 Homeowner's exemption | $747 Land $350 Building $397 | $747,000 |
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.
FEMA maps place 257 Cornwell Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1980.
Source: FEMA National Flood Hazard Layer, effective April 5, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 1 (1980) |
| Most Recent Claim | Apr 1980 · rainfall accumulation |
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.
The area around 257 Cornwell Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | WILLISTON PARK (V) serves 7,287 people · EPA ID NY2902858 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Sep 2024 |
| Lead | 2 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 888 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| T-Mobile Fixed Wireless | 100 / 20 |
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