Suffolk County and Islip Town property record for 111 Union Ave, Islip, NY 11751
| Property Type | Single Family Home |
|---|---|
| Details | 1,041 sqft · built 1957 |
| Lot Size | 0.35 acres (15,246 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $10,133 (2024) |
| Deeds & Mortgages | Mar 2026 Mortgage Jan 2024 Line of Credit + 2 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 472889 396.-5-2 |
| Primary APN | 472889 396.-5-2 |
|---|---|
| Alternative APNs |
|
| Building Area | 1,041 sqft Living Area |
|---|---|
| 1st Floor Area | 1,041 sqft |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1957 |
| Lot Area | 15,246 sqft (0.35 acres) |
| Lot Width | 76 ft Width |
| Garage Type | Attached |
| Garage Area | 240 sqft |
| Account Number | 042140 |
|---|---|
| Street Address | 111 UNION AVE |
| City | ISLIP |
| State | NY |
| Zip | 11751-4314 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | B |
| Legal Description | X2218251Y183166 T059H00000000 |
| Legal Block | 6000 |
| Legal Lot Number | 500 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | ISLIP |
| Census Block Group | 1 |
| Census Block | 1014 |
| Census Tract | 147402 |
Source: Suffolk County and Islip Town records · APN 472889 396.-5-2
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 | 111 UNION AVE, ISLIP, NY 11751-4314 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Mar 13, 2026 | Deed of Trust, Mortgage THIRD FEDERAL SAVING & LOAN ASSOC |
| Jan 19, 2024 | Deed of Trust, Mortgage · Line of Credit TEACHERS FCU |
| Nov 24, 2020 | Deed, Transfer |
| Aug 25, 2020 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Transfer Date | Jun 19, 2020 |
| Transfer Doc | 0130680761 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Property Address | 111 UNION AVE, ISLIP, NY 11751-4314 |
| Transaction Type | Mortgage |
| Record Updated | Apr 15, 2026 |
| Title Company | ADVANTAGEONE TITLE, ADVANTAGE TITLE |
| Name | Verified Name |
|---|
| Document Number | 0237160554 |
|---|---|
| Date | Mar 13, 2026 |
| Book Page | 23716/554 |
| Name | THIRD FEDERAL SAVING & LOAN ASSOC |
|---|
| Amount | Amount Recorded |
|---|---|
| Term | 361 Months |
| Due | Apr 01, 2056 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Property Address | 111 UNION AVE, ISLIP, NY 11751-4314 |
| Transaction Type | Mortgage |
| Record Updated | Mar 26, 2024 |
| Name | Verified Name |
|---|
| Document Number | 0235610983 |
|---|---|
| Date | Jan 19, 2024 |
| Book Page | 23561/983 |
| Name | TEACHERS FCU |
|---|---|
| Type | Credit Union |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 349 Months |
| Due | Feb 01, 2053 |
| Rate Type | Adjustable Rate |
|---|
| Document Type | Deed |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Recording Date | Nov 24, 2020 |
| Property Address | 111 UNION AVE, ISLIP, NY 11751-4314 |
| Document Number | 0130790443 |
| Book / Page | 13079 / 443 |
| Instrument Date | Oct 05, 2020 |
| Transaction Type | Transfer |
| Record Updated | Aug 20, 2021 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Recording Date | Aug 25, 2020 |
| Property Address | 111 UNION AVE, ISLIP, NY 11751-4314 |
| Document Number | 0130680761 |
| Book / Page | 013068 / 000761 |
| Instrument Date | Jun 19, 2020 |
| Transaction Type | Transfer |
| Record Updated | Nov 02, 2020 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 37 WATSON PL ISLIP NY 117513514, ISLIP, NY 11751-3514 |
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 and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $33,650 (-) Land $10,400 Building $23,250 | $473,944 (-) Land $146,479 Building $327,465 | |
| 2024 | $10,133.00 | $473,944 (+2.54%) Land $146,479 Building $327,465 | |
| 2023 | $33,650 Land $10,400 Building $23,250 | $462,225 Land $142,857 Building $319,368 |
Source: FEMA National Flood Hazard Layer as of September 18, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 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 |
|
| Wildfire Risk | Low lower than 98% of the US · lower than 97.9% of New York |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| 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 |
Based on FCC filings for 357 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | SUFFOLK COUNTY WATER AUTHORITY serves 1,100,000 people |
|---|---|
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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