Suffolk County and Islip Town property records for 73 addresses on Boulevard Ave, West Islip, NY · Last verified August 2026
| Properties | 73 |
|---|---|
| Median Sale Price | $610,000 |
| Deeds and Mortgages on File | 62 |
| Median Price per Sqft | $327 |
| Owner Occupied | 90% |
| Median Annual Tax Bill | $12,289 |
| Median Year Built | 1962 |
| Median Ownership Tenure | 15 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
1,672 sqft · built 1961 · 0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,6832024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $180,000Sep 1998 | $12,3742024 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $198,000May 2000 | 2 Owners on Record Owner Occupied | AssessorUpdated Jul 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —May 2011 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,8132024 | 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 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,796 sqft · built 1961 · 0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,6142024 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
2,056 sqft · built 1960 · 0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $730,000Jun 2022 | $13,1352024 | 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 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $8,8842024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $475,000Aug 2014 | $12,2892024 | Amount on Record Dec 1998 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,1492024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.239 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $310,000Oct 2001 | $11,6422024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $430,000Sep 2005 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $450,000Jun 2009 | Amount on Record Jun 1997 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $470,000Mar 2007 | $11,5302024 | Amount on Record Mar 1998 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.219 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,0522024 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $665,250Apr 2025 | 2 Owners on Record | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $405,000Aug 2013 | Amount on Record Oct 2001 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $290,000Aug 2001 | $11,8112024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,542 sqft · built 1960 · 0.189 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $465,000Oct 2019 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
1,128 sqft · built 1961 · 0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $480,000Feb 2021 | $11,0962024 | Amount on Record Jul 2020 | Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.119 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $180,000May 1999 | Owner on Record Owner Occupied | AssessorUpdated Jul 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $230,000Feb 2000 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $155,000Dec 1996 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.28 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $457,500Sep 2014 | $14,6532024 | Amount on Record Nov 1999 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $295,000Oct 2001 | Owner on Record Owner Occupied | AssessorUpdated Jul 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,885 sqft · built 1962 · 0.289 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $575,000May 2021 | $13,9752024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
1,885 sqft · built 1962 · 0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $417,500Dec 2017 | $12,7692024 | —Jan 2010 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $180,000Jun 1997 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
1,879 sqft · built 1962 · 0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $620,000Mar 2022 | 2 Owners on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $256,000Feb 2002 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,874 sqft · built 1962 · 0.28 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated May 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.28 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $13,9452024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $314,000Dec 2001 | $13,1052024 | 2 Owners on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,9922024 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.28 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated May 2026 |
0.3 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.36 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.28 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $595,000Sep 2023 | Amount on Record — | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.28 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,1212024 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.31 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $172,000Dec 1995 | 2 Owners on Record | AssessorUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $188,000Dec 1996 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $700,000Oct 2025 | $12,9642024 | Amount on Record Dec 2024 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
1,804 sqft · built 1962 · 0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $447,500Aug 2017 | Amount on Record Nov 2011 | Owner on Record Owner Occupied | Assessor + 5 DocumentsUpdated May 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $182,500May 1996 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
2,231 sqft · built 1963 · 0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $442,000Sep 2017 | $14,2322024 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $140,000Aug 1995 | $11,5302024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $500,000Jul 2025 | 2 Owners on Record | AssessorUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,5122024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $820,000Sep 2024 | Amount on Record Oct 1998 | Owner on Record | AssessorUpdated Aug 2026 |
1,968 sqft · built 1965 · 0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $500,000Mar 2020 | $13,8662024 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
1,860 sqft · built 1963 · 0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $600,000Jan 2024 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jan 1996 | 2 Owners on Record Owner Occupied | AssessorUpdated Jul 2026 |
1,860 sqft · built 1963 · 0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $610,000May 2023 | Amount on Record Feb 2023 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $415,000Nov 2013 | Owner on Record Owner Occupied | AssessorUpdated May 2026 |
0.239 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $425,000Feb 2011 | Amount on Record Mar 1994 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,5582024 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $370,000Feb 2012 | Owner on Record Owner Occupied | AssessorUpdated Jul 2026 |
0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated Jul 2026 |
1,864 sqft · built 1964 · 0.28 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $315,000Oct 2011 | $11,9242024 | Amount on Record Aug 2003 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
1,989 sqft · built 1962 · 0.289 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $408,000Jul 2018 | $15,5532024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.26 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $275,000Nov 2001 | $12,2052024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.31 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $250,000Feb 2000 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
0.28 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,8962024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
2,456 sqft · built 1963 · 0.419 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $500,000Sep 2005 | $14,2302024 | Owner on Record Owner Occupied | Assessor + 4 DocumentsUpdated Aug 2026 |