Suffolk County and Islip Town property records for 22 addresses on Monroe Ave, West Islip, NY · Last verified August 2026
| Properties | 22 |
|---|---|
| Median Sale Price | $525,000 |
| Deeds and Mortgages on File | 18 |
| Median Price per Sqft | $426 |
| Owner Occupied | 100% |
| Median Annual Tax Bill | $12,516 |
| Median Year Built | 1961 |
| Median Ownership Tenure | 11 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
0.239 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $377,000Oct 2014 | $15,5782024 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $123,000Sep 1998 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $585,000Nov 2022 | $10,2382024 | Amount on Record Nov 2016 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $185,000Feb 2001 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $350,000Jan 2015 | $10,8272024 | Amount on Record Feb 2014 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,358 sqft · built 1930 · 0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $653,000Dec 2022 | Amount on Record Jul 2022 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $440,000May 2016 | $13,8102024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $643,000Apr 2023 | —Oct 2000 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.41 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,5162024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
2,236 sqft · built 1930 · 0.289 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $145,000Mar 2000 | $15,1882024 | Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.31 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $40,000Jun 1999 | $8,6612024 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $55,000Feb 2023 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
992 sqft · built 1963 · 0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $365,000Sep 2017 | $11,0682024 | Amount on Record Mar 2014 | Owner on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
1,232 sqft · built 1961 · 0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $525,000Jan 2022 | $13,9502024 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.339 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated Jul 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $463,500Jan 2015 | $13,1052024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.36 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $83,000Jul 1995 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.15 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $382,500Jun 2010 | $11,5602024 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |