1. Home
  2. New York
  3. Suffolk County
  4. West Islip

Washington Ave, West Islip, NY Property Records

Suffolk County and Islip Town property records for 65 addresses on Washington Ave, West Islip, NY · Last verified October 2026

Washington Ave Highlights

Properties 65
Median Sale Price $500,000
Deeds and Mortgages on File 53
Median Price per Sqft $273
Owner Occupied 91%
Median Annual Tax Bill $12,849
Median Year Built 1965
Median Ownership Tenure 17 years

Properties on Washington Ave

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

1007 Washington Ave

0.289 acres

Last Sale Tax Bill Prior Sale Owner Records
$332,000Oct 2008 $9,2802024 Amount on Record Apr 2002 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1008 Washington Ave

0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1015 Washington Ave

1,104 sqft · built 1960 · 0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1016 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$13,0782024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1026 Washington Ave

1,290 sqft · built 1967 · 0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$530,000Mar 2021 $12,3532024 Amount on Record Jul 2004 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

View Property Record

1027 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied AssessorUpdated Oct 2026

View Property Record

1036 Washington Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$417,500Mar 2005 $14,2322024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1037 Washington Ave

0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
$387,000Feb 2009 $10,2932024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1041 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record AssessorUpdated Aug 2026

View Property Record

1044 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1045 Washington Ave

0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied AssessorUpdated Oct 2026

View Property Record

1054 Washington Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 2013 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1108 Washington Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$329,000Dec 2011 $11,0802024 Amount on Record Jan 1999 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1111 Washington Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$177,000Aug 1993 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1112 Washington Ave

1,830 sqft · built 1972 · 0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
$500,000Mar 2021 $11,9532024 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

1115 Washington Ave

2,064 sqft · built 1963 · 0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$535,000Apr 2017 $15,2162024 Amount on Record Dec 1998 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1116 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied AssessorUpdated Oct 2026

View Property Record

1117 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$365,500Aug 2009 $8,5212024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1127 Washington Ave

0.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$370,000Feb 2005 $14,9912024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1128 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$490,000Mar 2010 $14,0052024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1132 Washington Ave

0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,2932024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1134 Washington Ave

0.13 acres

Last Sale Tax Bill Prior Sale Owner Records
$410,000Aug 2016 $14,1192024 Amount on Record Mar 2001 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1135 Washington Ave

1,506 sqft · built 1965 · 0.169 acres

Last Sale Tax Bill Prior Sale Owner Records
$372,500Jul 2018 $12,9102024 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

1136 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$445,000Jul 2008 Amount on Record Nov 2000 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

View Property Record

1211 Washington Ave

0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
2 Owners on Record Owner Occupied AssessorUpdated Oct 2026

View Property Record

1214 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$395,000Sep 2005 Owner on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1215 Washington Ave

0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
$215,000Mar 2002 Amount on Record May 1998 Owner on Record Owner Occupied AssessorUpdated Oct 2026

View Property Record

1220 Washington Ave

0.169 acres

Last Sale Tax Bill Prior Sale Owner Records
$465,000Jun 2014 $12,8252024 Amount on Record Jan 2008 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Aug 2026

View Property Record

1221 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$95,000Jul 1994 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1226 Washington Ave

0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
$315,000May 2003 $11,8112024 Amount on Record Dec 1998 2 Owners on Record Owner Occupied AssessorUpdated Oct 2026

View Property Record

1229 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$365,000Jan 2007 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

View Property Record

1235 Washington Ave

1,900 sqft · built 1949 · 0.13 acres

Last Sale Tax Bill Prior Sale Owner Records
—Oct 2018 Amount on Record May 2017 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

View Property Record

1236 Washington Ave

1,987 sqft · built 1974 · 0.21 acres

Last Sale Tax Bill Prior Sale Owner Records
2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1306 Washington Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$335,000Jan 2003 $11,7272024 Amount on Record Dec 1998 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1311 Washington Ave

1,698 sqft · built 1964 · 0.13 acres

Last Sale Tax Bill Prior Sale Owner Records
$350,000Aug 2015 $12,8492024 Amount on Record Mar 2004 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1312 Washington Ave

2,375 sqft · built 1958 · 0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$149,000May 1995 2 Owners on Record Assessor + 1 DocumentUpdated Oct 2026

View Property Record

1322 Washington Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$405,000Jan 2007 $10,0682024 Amount on Record Sep 1995 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1323 Washington Ave

0.16 acres

Last Sale Tax Bill Prior Sale Owner Records
2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

1329 Washington Ave

0.16 acres

Last Sale Tax Bill Prior Sale Owner Records
$350,000Feb 2017 $13,4412024 2 Owners on Record Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1334 Washington Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,5602024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1335 Washington Ave

0.169 acres

Last Sale Tax Bill Prior Sale Owner Records
$160,000Nov 2000 Amount on Record — Owner on Record AssessorUpdated Oct 2026

View Property Record

1341 Washington Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$449,000Jul 2009 $13,3882024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1406 Washington Ave

0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
$307,500Mar 2015 $9,9552024 Amount on Record Dec 2002 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1410 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
—Oct 1998 $11,2522024 Amount on Record Oct 1998 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

1411 Washington Ave

976 sqft · built 1968 · 0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
$385,000Aug 2021 $16,1842024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1412 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$360,500Oct 2007 $10,3882024 Amount on Record Dec 1996 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

1413 Washington Ave

0.13 acres

Last Sale Tax Bill Prior Sale Owner Records
$440,000Nov 2016 $12,9942024 Amount on Record May 2008 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1415 Washington Ave

2,096 sqft · built 1967 · 0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$489,000Oct 2020 $13,6972024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1420 Washington Ave

0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
$210,000May 2000 $9,4792024 Amount on Record Dec 1995 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1430 Washington Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$262,500Jun 1999 $16,9032024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1431 Washington Ave

0.269 acres

Last Sale Tax Bill Prior Sale Owner Records
$418,500Aug 2012 $14,8772024 Amount on Record May 2005 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

View Property Record

1500 Washington Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$385,000Sep 2007 $13,7822024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1501 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1505 Washington Ave

2,500 sqft · built 1954 · 0.13 acres

Last Sale Tax Bill Prior Sale Owner Records
$540,000Apr 2022 $13,1912024 Amount on Record Mar 2017 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

1506 Washington Ave

0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$355,000May 2004 $10,1382024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1509 Washington Ave

0.2 acres

Last Sale Tax Bill Prior Sale Owner Records
2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1512 Washington Ave

1,426 sqft · built 1973 · 0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$375,000Aug 2017 $14,2322024 Amount on Record May 2017 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Sep 2026

View Property Record

1515 Washington Ave

1,836 sqft · built 1964 · 0.2 acres

Last Sale Tax Bill Prior Sale Owner Records
2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1520 Washington Ave

0.169 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1524 Washington Ave

0.169 acres

Last Sale Tax Bill Prior Sale Owner Records
$255,000Jan 2000 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1525 Washington Ave

0.13 acres

Last Sale Tax Bill Prior Sale Owner Records
$265,000Feb 2000 Amount on Record Jul 1996 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1528 Washington Ave

1,526 sqft · built 1993 · 0.169 acres

Last Sale Tax Bill Prior Sale Owner Records
$357,000May 2016 $12,3472024 Amount on Record Apr 2011 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

1532 Washington Ave

1,526 sqft · built 1992 · 0.169 acres

Last Sale Tax Bill Prior Sale Owner Records
$13,4722024 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

1536 Washington Ave

0.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$13,3022024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

1537 Washington Ave

880 sqft · built 1943 · 0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$617,000Sep 2024 $10,1112024 Amount on Record Sep 2020 2 Owners on Record Assessor + 3 DocumentsUpdated Aug 2026

View Property Record

Property Records in Nearby Streets