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

Altmar Ave, West Islip, NY Property Records

Suffolk County and Islip Town property records for 35 addresses on Altmar Ave, West Islip, NY · Last verified October 2026

Altmar Ave Highlights

Properties 35
Median Sale Price $550,000
Deeds and Mortgages on File 38
Median Price per Sqft $319
Owner Occupied 91%
Median Annual Tax Bill $11,664
Median Year Built 1960
Median Ownership Tenure 15 years

Properties on Altmar Ave

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

4 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$245,000Dec 2011 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

View Property Record

5 Altmar Ave

2,275 sqft · built 1966 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$420,000Mar 2021 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

View Property Record

8 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$415,000Oct 2007 $11,7752024 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

View Property Record

25 Altmar Ave

2,126 sqft · built 1966 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$287,000Aug 2000 Amount on Record Feb 1996 Owner on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

26 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$341,000Sep 2011 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2026

View Property Record

39 Altmar Ave

1,860 sqft · built 1960 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$100,000Dec 1996 $10,2082024 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

40 Altmar Ave

1,833 sqft · built 1960 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$386,500Sep 2020 Amount on Record Dec 1995 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

46 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$405,000Sep 2007 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

65 Altmar Ave

0.25 acres

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

View Property Record

66 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$130,000Jun 1994 $10,1112024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

75 Altmar Ave

0.25 acres

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

View Property Record

76 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$715,000Aug 2023 $12,3302024 Amount on Record May 2023 2 Owners on Record Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

86 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$279,990Sep 2003 $11,3872024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

92 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$405,000Dec 2006 $11,6642024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

95 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$319,000Dec 2016 Owner on Record Owner Occupied AssessorUpdated Oct 2026

View Property Record

96 Altmar Ave

0.25 acres

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

View Property Record

106 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,1392024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

116 Altmar Ave

0.25 acres

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

View Property Record

125 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$780,000Jan 2023 Amount on Record Jan 2017 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

View Property Record

129 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$338,000Nov 2014 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

130 Altmar Ave

0.25 acres

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

View Property Record

133 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$343,400Dec 2008 $10,0692024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

134 Altmar Ave

0.25 acres

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

View Property Record

137 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$385,000Jul 2010 $12,2622024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

138 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$370,000May 2011 $11,6522024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

141 Altmar Ave

1,741 sqft · built 1950 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$97,500Feb 2018 Owner on Record Owner Occupied Assessor + 6 DocumentsUpdated Oct 2026

View Property Record

142 Altmar Ave

1,720 sqft · built 1955 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$550,000Jan 2021 $13,0112024 Amount on Record Jan 2007 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

145 Altmar Ave

1,632 sqft · built 1957 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$700,000Apr 2026 $12,9842024 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

View Property Record

146 Altmar Ave

1,448 sqft · built 1951 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$95,000Dec 1995 $7,8732024 Owner on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

149 Altmar Ave

1,764 sqft · built 1958 · 0.25 acres

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

View Property Record

150 Altmar Ave

0.25 acres

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

View Property Record

153 Altmar Ave

1,692 sqft · built 1976 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$100,000Dec 2017 Amount on Record Jul 2000 2 Owners on Record Assessor + 1 DocumentUpdated Aug 2026

View Property Record

154 Altmar Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$387,500Dec 2005 $11,8032024 Amount on Record Jan 1996 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

View Property Record

157 Altmar Ave

0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$328,000Nov 2003 Owner on Record Owner Occupied AssessorUpdated Aug 2026

View Property Record

158 Altmar Ave

1,318 sqft · built 1964 · 0.28 acres

Last Sale Tax Bill Prior Sale Owner Records
$480,000Oct 2021 Amount on Record Jul 2021 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

View Property Record

Property Records in Nearby Streets