Suffolk County and Islip Town property record for 20 Union Ave, Islip, NY 11751 · Last verified August 2026
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.07 acres (3,049 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $130,000 (Oct 2006) |
| Flood Zone | Zone X (minimal risk) |
| APN | 472889 370.-4-67 |
| Primary APN | 472889 370.-4-67 |
|---|---|
| Alternative APNs |
|
| Lot Area | 3,049 sqft (0.07 acres) |
|---|---|
| Lot Width | 52 ft Width |
| Account Number | 038771 |
|---|---|
| Street Address | 20 UNION AVE |
| City | ISLIP |
| State | NY |
| Zip | 11751-3912 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | X2217761Y184202 T059H00000000 |
| Legal Block | 0004 |
| Legal Lot Number | 400 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | ISLIP |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 147402 |
Source: Suffolk County and Islip Town records · APN 472889 370.-4-67
Assessment roll updated August 11, 2026 · Last verified August 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 File |
|---|---|
| Mailing Address | PO BOX 353, GREAT RIVER, NY 11739-0353 |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Oct 12, 2006 · Amount on Record |
| Deed Sale | Oct 12, 2006 · Amount on Record |
| Deed Book / Page | 12473 / 575 |
| Record Updated | Sep 20, 2026 |
Source: Suffolk County and Islip Town records · Assessment roll updated August 11, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Islip Town |
| Unified School District | Islip Union Free 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 | Assessed Value | Assessed Market Value |
|---|---|---|
| 2025 | $26,300 (-) Land $6,000 Building $20,300 | |
| 2024 | $370,422 (+2.53%) Land $84,507 Building $285,915 | |
| 2023 | $26,300 Land $6,000 Building $20,300 | $361,264 Land $82,418 Building $278,846 |
Source: FEMA National Flood Hazard Layer, Suffolk County (36103C), updated September 18, 2026 · 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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