Suffolk County and Southampton Town property record for 18 Walnut St, Central Islip, NY 11722
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,084 sqft · built 1995 |
| Lot Size | 0.23 acres (10,019 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $405,000 (Apr 2008) |
| Tax Bill | $9,421 (2020) |
| Flood Zone | Zone X (minimal risk) |
| APN | 0900-005.00-04.00-033.000 |
| Primary APN | 0900-005.00-04.00-033.000 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Stories | 2 Stories |
| Building Area | 1,084 sqft Living Area |
| 1st Floor Area | 1,084 sqft |
| Year Built | Built 1995 |
|---|---|
| Effective Year Built | Effective 1997 |
| Architectural Style | Mobile Home |
| Exterior Material | Composition/Composite |
| Foundation Type | No Foundation |
| Lot Area | 10,019 sqft (0.23 acres) |
| View / Lot | Below Average |
| Porch | Porch |
|---|---|
| Porch Area | 160 sqft |
| Patio Area | 384 sqft |
| Shed | 1 Shed |
| Heating System | HVAC |
|---|---|
| Heating Fuel | Gas |
| Sewer | Connected |
| Street Address | 18 WALNUT ST |
|---|---|
| City | CENTRAL ISLIP |
| State | NY |
| Zip | 11722-4133 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | BLK L LOT 57-60 |
| Legal Subdivision | PINE NECK PARK |
| Legal Block | 4 |
| Legal Lot Number | 33 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | SOUTHAMPTON |
| Census Block Group | 1 |
| Census Block | 1038 |
| Census Tract | 190711 |
Source: Suffolk County and Southampton Town records, as of August 11, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 18 WALNUT ST, SAG HARBOR, NY 11963-1726 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Husband and Wife |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 30, 2008 · Amount on Record |
| Deed Sale | Apr 30, 2008 · Amount on Record |
| Deed Book / Page | 12550 / 712 |
| Last Transfer Date | Dec 6, 2024 |
| Record Updated | Sep 20, 2026 |
Source: Suffolk County and Southampton Town assessment roll, as of August 11, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Southampton Town |
| Unified School District | Sag Harbor Union Free School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $519,400 (-) Land $394,400 Building $125,000 | ||
| 2024 | $824,445 (+10.32%) Land $626,032 Building $198,413 | ||
| 2023 | $519,400 Land $394,400 Building $125,000 | $747,338 Land $567,482 Building $179,856 | |
| 2020 | $9,421.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective September 18, 2026 · 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 |
| Flood Insurance Cost | Premium on Record median of 191 policies |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 191 in force |
| Nearby Flood Claims | 11 (1991–2024) |
| Claims Outside the SFHA | 3 of 11 |
| Most Recent Claim | Apr 2024 · tidal / storm surge |
| Claims by Event |
|
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: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · above 54% of New York |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | SUFFOLK COUNTY WATER AUTHORITY serves 1,100,000 people · EPA ID NY5110526 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jan 2024 |
| Lead | 1 ppb (2025–2027) action level 15 ppb |
| Water Quality | Asbestos resolved · Jul 2020 |
|---|---|
| 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 395 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
5G (outdoors only) and 4G LTE
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