Suffolk County and Islip Town property records for 57 addresses on Madison Ave, West Islip, NY · Last verified September 2026
| Properties | 57 |
|---|---|
| Median Sale Price | $650,000 |
| Deeds and Mortgages on File | 56 |
| Median Price per Sqft | $305 |
| Owner Occupied | 91% |
| Median Annual Tax Bill | $12,713 |
| Median Year Built | 1963 |
| Median Ownership Tenure | 17 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
0.36 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Oct 1998 | —Oct 1996 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $315,000Jun 2002 | Owner on Record Owner Occupied | AssessorUpdated May 2026 |
2,121 sqft · built 1954 · 0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $600,000Mar 2022 | $14,9072024 | Amount on Record Oct 2011 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
2,154 sqft · built 1957 · 0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $484,000Sep 2020 | $14,0912024 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
1,912 sqft · built 1963 · 0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $40,000Nov 2023 | $12,7132024 | Amount on Record Mar 2017 | Owner on Record Owner Occupied | Assessor + 4 DocumentsUpdated Sep 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $320,000May 2011 | $11,2632024 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
2,245 sqft · built 1963 · 0.219 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $685,000Jun 2023 | $16,0842024 | Amount on Record Dec 2018 | Owner on Record Owner Occupied | Assessor + 4 DocumentsUpdated Aug 2026 |
0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $330,000Mar 2023 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Mar 1998 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 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 |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $333,000Sep 2002 | $11,4172024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.089 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $390,000Oct 2005 | $12,8242024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $13,0222024 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.089 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $675,000Jan 2026 | $10,0132024 | Amount on Record Oct 2023 | 2 Owners on Record | Assessor + 3 DocumentsUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $390,000Jun 2002 | $10,2362024 | Amount on Record Oct 2001 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,2052024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated May 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —May 1996 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
1,496 sqft · built 1962 · 0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $650,000Dec 2024 | 2 Owners on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $231,000Jan 2001 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.13 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 |
|---|---|---|---|---|
| $171,000Jul 1998 | $12,0662024 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,614 sqft · built 1965 · 0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $395,000Feb 2002 | Amount on Record Mar 1995 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $310,000Sep 2001 | $12,8522024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.21 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $836,500Aug 2024 | $12,8492024 | Amount on Record Aug 2024 | 2 Owners on Record | Assessor + 1 DocumentUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $160,000Sep 1994 | $12,2612024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,898 sqft · built 1963 · 0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
2,215 sqft · built 1963 · 0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $720,000Sep 2024 | 2 Owners on Record | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $695,000Apr 2023 | $17,1852024 | Amount on Record Jun 2013 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $399,000Oct 2016 | $12,4622024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,396 sqft · built 1961 · 0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Oct 2021 | $13,3622024 | Amount on Record Nov 2016 | Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $280,000Oct 2001 | Amount on Record Nov 1993 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.239 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $365,000Jan 2011 | $11,9802024 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.089 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $157,000Jul 1999 | $8,8022024 | Amount on Record Mar 1994 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.13 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $10,8712024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.13 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $152,500Jul 1998 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
2,075 sqft · built 1960 · 0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $750,000May 2026 | Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | Assessor + 7 DocumentsUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
1,768 sqft · built 1968 · 0.13 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $570,000Aug 2022 | $11,6542024 | Amount on Record Apr 1994 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated May 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $420,000Sep 2015 | $13,3322024 | Amount on Record Jan 2005 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
2,143 sqft · built 1967 · 0.269 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $457,500Nov 2009 | $14,3422024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $29,000Mar 1999 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $349,900Feb 2003 | $11,7292024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $212,000Mar 2000 | Owner on Record Owner Occupied | AssessorUpdated May 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $13,6672024 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
2,340 sqft · built 1957 · 0.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $632,500Dec 2020 | $15,7782024 | Amount on Record Oct 2016 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2026 |
0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |
0.31 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $170,000Jun 1999 | 2 Owners on Record Owner Occupied | AssessorUpdated Aug 2026 |