Suffolk County and Islip Town property record for 21 Sequams Ln W, West Islip, NY 11795
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.25 acres (10,890 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $546,000 (Sep 2011) |
| Tax Bill | $16,678 (2024) |
| Deeds & Mortgages | Mar 2024 Refinance Oct 2021 Refinance + 1 more |
| Flood Zone | Zone AE (high risk) |
| APN | 472889 476.-1-44.2 |
| Primary APN | 472889 476.-1-44.2 |
|---|---|
| Alternative APNs |
|
| Lot Area | 10,890 sqft (0.25 acres) |
|---|---|
| Lot Width | 75 ft Width |
| Account Number | 633121 |
|---|---|
| Street Address | 21 SEQUAMS LN W |
| City | WEST ISLIP |
| State | NY |
| Zip | 11795-4524 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | A |
| Legal Description | X2189961Y170914 T052H00000000 |
| Legal Block | 6000 |
| Legal Lot Number | 100 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | ISLIP |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 146902 |
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 | 21 SEQUAMS LN W, WEST ISLIP, NY 11795-4524 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Mar 7, 2024 | Deed of Trust, Mortgage · Stand-Alone Refinance TD BANK NA |
| Oct 27, 2021 | Deed of Trust, Mortgage · Stand-Alone Refinance BETHPAGE FCU |
| Sep 18, 2017 | Deed of Trust, Mortgage · Conventional Mortgage TEACHERS FCU |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Sep 15, 2011 · Amount on Record |
| Deed Sale | Sep 15, 2011 · Amount on Record |
| Deed Book / Page | 12671 / 381 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Property Address | 21 SEQUAMS LN W, WEST ISLIP, NY 11795-4524 |
| Transaction Type | Mortgage |
| Record Updated | Apr 16, 2024 |
| Name | Verified Name |
|---|
| Document Number | 0235710684 |
|---|---|
| Date | Mar 7, 2024 |
| Book Page | 23571/684 |
| Name | TD BANK NA |
|---|---|
| Type | Bank |
| Type | Stand-Alone Refinance |
|---|---|
| Amount | Amount Recorded |
| Term | 349 Months |
| Due | Apr 1, 2053 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Property Address | 21 SEQUAMS LN W, WEST ISLIP, NY 11795-4524 |
| Transaction Type | Mortgage |
| Record Updated | Dec 7, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0233390687 |
|---|---|
| Date | Oct 27, 2021 |
| Book Page | 23339/687 |
| Instrument | DM042847 |
| Name | BETHPAGE FCU |
|---|---|
| Type | Credit Union |
| Type | Stand-Alone Refinance |
|---|---|
| Amount | Amount Recorded |
| Term | 181 Months |
| Due | Nov 1, 2036 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Property Address | 21 SEQUAMS LN W, WEST ISLIP, NY 11795-4524 |
| Document Number | 0228670890 |
| Book / Page | 022867 / 000890 |
| Instrument Date | Sep 18, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Jan 3, 2018 |
| Title Company | FIRST RSRC TITLE AND ABSTRACT LLC |
| Name | Verified Name |
|---|---|
| Address | 21 SEQUAMS LN W WEST ISLIP NY 117954524, WEST ISLIP, NY 11795-4524 |
| Document Number | 0228670890 |
|---|---|
| Date | Oct 25, 2017 |
| Book Page | 022867/000890 |
| Name | TEACHERS FCU |
|---|---|
| Type | Credit Union |
| Address | HAUPPAUGE, NY 11788 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 240 Months |
| Due | Oct 24, 2037 |
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 | $57,200 (-) Land $13,500 Building $43,700 | $805,634 (-) Land $190,141 Building $615,493 | |
| 2024 | $16,678.00 | $805,634 (+2.54%) Land $190,141 Building $615,493 | |
| 2023 | $57,200 Land $13,500 Building $43,700 | $785,715 Land $185,440 Building $600,275 |
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 AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | 5.0 ft |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on Record 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 355 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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