Suffolk County and Islip Town property records for 12 addresses on William St, Central Islip, NY · Last verified August 2026
| Properties | 12 |
|---|---|
| Median Sale Price | $288,650 |
| Deeds and Mortgages on File | 9 |
| Median Price per Sqft | $262 |
| Owner Occupied | 100% |
| Median Annual Tax Bill | $8,593 |
| Median Year Built | 1945 |
| Median Ownership Tenure | 9 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
0.31 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $123,600Apr 2014 | 1 Name on Record Owner Occupied | AssessorUpdated May 2026 |
0.15 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $178,000Jan 2003 | $8,3342024 | Amount on Record Jan 2000 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $123,000Jun 2001 | $6,6712024 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.15 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $101,250Nov 2017 | $9,4662024 | Amount on Record Nov 2016 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.289 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,590 sqft · Built 1953 · 0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $418,000Apr 2022 | $9,2252024 | Amount on Record Aug 1996 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
1,036 sqft · Built 1945 · 0.2 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $365,000Aug 2020 | $8,5932024 | Amount on Record Oct 2013 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $162,654Jun 2003 | $11,5172024 | Amount on Record Aug 2002 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,210 sqft · Built 1922 · 0.269 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $233,200Apr 2017 | $8,0812024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $557,500Oct 2025 | Amount on Record Mar 2004 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.35 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $288,650Jun 2006 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach of burnable land |