Suffolk County and Islip Town property record for 20 Saint Marks Ln, Islip, NY 11751
| Property Type | Single Family Home |
|---|---|
| Details | 1,151 sqft · built 1946 |
| Lot Size | 0.15 acres (6,534 sqft) |
| Owner | 2 Individual Names on File |
| Flood Zone | Zone X (minimal risk) |
| APN | 472889 371.-2-46 |
| Primary APN | 472889 371.-2-46 |
|---|---|
| Alternative APNs |
|
| Building Area | 1,151 sqft Living Area |
|---|---|
| 1st Floor Area | 1,151 sqft |
| Year Built | Built 1946 |
|---|---|
| Effective Year Built | Effective 1946 |
| Lot Area | 6,534 sqft (0.15 acres) |
| Lot Width | 64.6 ft Width |
| Garage Type | Detached |
| Garage Area | 308 sqft |
| Account Number | 603610 |
|---|---|
| Street Address | 20 SAINT MARKS LN |
| City | ISLIP |
| State | NY |
| Zip | 11751-4102 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | B |
| Legal Description | X2219842Y184551 T059H00000000 |
| Legal Subdivision | SOUTH SHORE HOMES INC |
| Legal Block | 1000 |
| Legal Lot Number | 200 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | ISLIP |
| Census Block Group | 1 |
| Census Block | 1009 |
| Census Tract | 147402 |
Source: Suffolk County and Islip Town assessment roll, 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 File |
|---|---|
| Mailing Address | 20 SAINT MARKS LN, ISLIP, NY 11751-4102 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Transfer Date | May 19, 2016 |
| Transfer Doc | 0128690397 |
| Record Updated | Sep 20, 2026 |
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 | Assessed Value | Assessed Market Value |
|---|---|---|
| 2025 | $33,100 (-) Land $10,700 Building $22,400 | |
| 2024 | $466,197 (+2.54%) Land $150,704 Building $315,493 | |
| 2023 | $33,100 Land $10,700 Building $22,400 | $454,670 Land $146,978 Building $307,692 |
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 40 policies |
| Nearby Flood Policies | 40 in force |
| Nearby Flood Claims | 19 (1980–2023) |
| Claims Outside the SFHA | 18 of 19 |
| Most Recent Claim | Jul 2023 · rainfall accumulation |
| 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 99.1% of the US · lower than 99.2% of New York |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
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 274 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Communications Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber | 2,300 / 2,300 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
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