Suffolk County and Islip Town property record for 50 Deforest Ave, West Islip, NY 11795
| Property Type | Duplex |
|---|---|
| Details | 2,580 sqft · built 1990 |
| Lot Size | 0.27 acres (11,761 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $573,000 (Sep 2017) |
| Tax Bill | $18,390 (2024) |
| Deeds & Mortgages | Aug 2020 Refinance Jun 2018 Refinance + 1 more |
| Flood Zone | Zone X (moderate risk) |
| APN | 472889 472.-2-26.1 |
| Primary APN | 472889 472.-2-26.1 |
|---|---|
| Alternative APNs |
|
| Building Area | 2,580 sqft Living Area |
|---|---|
| 1st Floor Area | 1,530 sqft |
| Basement Area | 1,050 sqft |
| Year Built | Built 1990 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Duplex Single |
| Lot Area | 11,761 sqft (0.27 acres) |
| Lot Dimensions | 160 ft deep x 75 ft wide |
| Account Number | 022885 |
|---|---|
| Street Address | 50 DEFOREST AVE |
| City | WEST ISLIP |
| State | NY |
| Zip | 11795-4512 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | B |
| Legal Description | T052H00000000 |
| Legal Block | 2000 |
| Legal Lot Number | 200 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | ISLIP |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 146902 |
50 Deforest Ave, a duplex, is owned and occupied by two individuals who bought it in September 2017.
Source: Suffolk County and Islip Town records, as of August 11, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 50 DEFOREST AVE, WEST ISLIP, NY 11795-4512 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Aug 25, 2020 | Deed of Trust, Mortgage · Stand-Alone Refinance NATIONWIDE MORTGAGE BANKERS |
| Jun 7, 2018 | Deed of Trust, Mortgage · Stand-Alone Refinance TEACHERS FCU |
| Sep 26, 2017 | Grant Deed, Transfer · Conventional Mortgage LOANDEPOT.COM LLC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 26, 2017 · Amount on File |
| Deed Sale | Sep 26, 2017 · Amount on File |
| Prior Sale | Oct 6, 2004 · Amount on File |
| Deed Book / Page | 12931 / 158 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Property Address | 50 DEFOREST AVE, WEST ISLIP, NY 11795-4512 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0231660882 |
|---|---|
| Date | Aug 25, 2020 |
| Book Page | 23166/882 |
| Instrument | DL022449 |
| Name | NATIONWIDE MORTGAGE BANKERS |
|---|
| Type | Stand-Alone Refinance |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2050 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Property Address | 50 DEFOREST AVE, WEST ISLIP, NY 11795-4512 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | 1ST AMERICAN TITLE |
| Name | Verified Name |
|---|
| Document Number | 0229320846 |
|---|---|
| Date | Jun 7, 2018 |
| Book Page | 22932/846 |
| Instrument | 18-0104535 |
| Name | TEACHERS FCU |
|---|---|
| Type | Credit Union |
| Type | Stand-Alone Refinance |
|---|---|
| Amount | Amount on Record |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Recording Date | Sep 26, 2017 |
| Property Address | 50 DEFOREST AVE, WEST ISLIP, NY 11795-4512 |
| Document Number | 0129310158 |
| Book / Page | 012931 / 000158 |
| Instrument Date | Aug 28, 2017 |
| Transaction Type | Transfer |
| Record Updated | Nov 9, 2017 |
| Title Company | STEWART TITLE |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $2,292.00 |
| Amount Accuracy | Confirmed |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Tenants by the Entirety |
| Address | 46 FRANKLIN ST AMITYVILLE NY 117013502, AMITYVILLE, NY 11701-3502 |
| Document Number | 228590266 |
|---|---|
| Date | Sep 26, 2017 |
| Book Page | 022859/000266 |
| Name | LOANDEPOT.COM LLC |
|---|---|
| Type | Funding / Finance Company |
| Address | FOOTHILL RANCH, CA 92610 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Sep 25, 2047 |
Source: Suffolk County and Islip Town assessment roll, as of August 11, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Islip Town |
| Unified School District | West Islip Union Free School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $60,100 Land $10,200 Building $49,900 | $846,479 (-3.53%) Land $143,662 Building $702,817 | |
| 2024 | $18,390.00 | $877,465 (+2.54%) Land $143,662 Building $733,803 | |
| 2023 | $62,300 Land $10,200 Building $52,100 | $855,769 Land $140,110 Building $715,659 |
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 50 Deforest Ave in Zone X, an area of moderate flood risk, within 100 ft of a high-risk flood zone.
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 273 policies |
| Nearby Flood Policies | 273 in force |
| Nearby Flood Claims | 592 (1978–2025) |
| Claims Outside the SFHA | 119 of 592 |
| Most Recent Claim | Oct 2025 · 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.
The area around 50 Deforest 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 | 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 355 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber | 2,300 / 2,300 |
| T-Mobile Fixed Wireless | 100 / 20 |
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