Suffolk County and Islip Town property record for 542 Islip Ave, Islip, NY 11751
| Property Type | Single Family Home |
|---|---|
| Details | 1,769 sqft · built 1943 |
| Lot Size | 0.23 acres (10,019 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $240,000 (Aug 2017) |
| Tax Bill | $11,604 (2024) |
| Deeds & Mortgages | Aug 2017 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 472889 250.-2-8 |
| Primary APN | 472889 250.-2-8 |
|---|---|
| Alternative APNs |
|
| Building Area | 1,769 sqft Living Area |
|---|---|
| 1st Floor Area | 1,184 sqft |
| Year Built | Built 1943 |
|---|---|
| Effective Year Built | Effective 1943 |
| Lot Area | 10,019 sqft (0.23 acres) |
| Lot Dimensions | 100 ft deep x 100 ft wide |
| Garage Type | Detached |
| Garage Area | 312 sqft |
| Account Number | 568790 |
|---|---|
| Street Address | 542 ISLIP AVE |
| City | ISLIP |
| State | NY |
| Zip | 11751-1505 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | A |
| Legal Description | X2218985Y193146 T045H00000000 |
| Legal Block | 0002 |
| Legal Lot Number | 200 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | ISLIP |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 146205 |
Source: Suffolk County and Islip Town records, as of October 19, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 542 ISLIP AVE, ISLIP, NY 11751-1505 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 29, 2017 · Amount on Record |
| Deed Sale | Aug 29, 2017 · Amount on Record |
| Prior Sale | Dec 19, 2002 · Amount on Record |
| Deed Book / Page | 12927 / 294 |
| Prior Transfer Date | Mar 26, 2015 |
| Prior Transfer Doc | 0128140656 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Recording Date | Aug 29, 2017 |
| Property Address | 542 ISLIP AVE, ISLIP, NY 11751-1505 |
| Document Number | 0129270294 |
| Book / Page | 012927 / 000294 |
| Instrument Date | Jul 19, 2017 |
| Transaction Type | Transfer |
| Record Updated | Oct 26, 2017 |
| Title Company | ALL COUNTY ABSTRACT INC. |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $960.00 |
| Amount Accuracy | Confirmed |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 542 ISLIP AVE ISLIP NY 117511505, ISLIP, NY 11751-1505 |
| Document Number | 228490599 |
|---|---|
| Date | Aug 29, 2017 |
| Book Page | 022849/000599 |
| Name | FEDERAL SVGS BK |
|---|---|
| Type | Federal Savings Bank |
| Address | CHICAGO, IL 60607 |
| Type | Conventional with PMI |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Aug 28, 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 | Islip Union Free School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $35,000 (-) Land $7,800 Building $27,200 | $492,958 (-) Land $109,859 Building $383,099 | |
| 2024 | $11,604.00 | $492,958 (+2.54%) Land $109,859 Building $383,099 | |
| 2023 | $35,000 Land $7,800 Building $27,200 | $480,769 Land $107,143 Building $373,626 |
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.
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 |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (2014) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Aug 2014 · 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.
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 209 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 |
May also be available: T-Mobile.
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