South Ave, Smithtown, NY Property Records

Suffolk County and Smithtown Town property records for 50 addresses on South Ave, Smithtown, NY · Last verified October 2026

South Ave Highlights

Properties 50
Median Sale Price $630,000
Deeds and Mortgages on File 49
Median Price per Sqft $439
Owner Occupied 82%
Median Annual Tax Bill $10,453
Median Year Built 1958
Median Ownership Tenure 10 years

Properties on South Ave

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

1 South Ave

3 bd · 1.5 ba · 1,718 sqft · built 1964 · 0.3 acres

Last Sale Tax Bill Prior Sale Owner Records
$308,000Jul 2016 $11,6152024 Amount on Record Sep 2012 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

2 South Ave

0.15 acres

Last Sale Tax Bill Prior Sale Owner Records
$280,000Sep 2002 $8,2912024 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

3 South Ave

3 bd · 1.5 ba · 1,098 sqft · built 1964 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$295,000Aug 2001 $10,4452024 Amount on Record Dec 1996 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

4 South Ave

4 bd · 2 ba · 2,748 sqft · built 1955 · 0.15 acres

Last Sale Tax Bill Prior Sale Owner Records
$159,000Jul 1998 $10,4532024 2 Owners on Record Owner Occupied AssessorUpdated Oct 2026

5 South Ave

3 bd · 2 ba · 1,635 sqft · built 1964 · 0.35 acres

Last Sale Tax Bill Prior Sale Owner Records
$337,000Jul 2002 $12,8552024 Amount on Record Apr 2000 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

6 South Ave

3 bd · 2 ba · 1,632 sqft · built 1924 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$12,4562024 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

7 South Ave

4 bd · 2 ba · 1,995 sqft · built 1964 · 0.35 acres

Last Sale Tax Bill Prior Sale Owner Records
$130,000Feb 2000 $12,3622024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

8 South Ave

0.38 acres

Last Sale Tax Bill Prior Sale Owner Records
$239,500Jan 2016 $4,2092024 Amount on Record Sep 2011 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

10 South Ave

0.5 acres

Last Sale Tax Bill Prior Sale Owner Records
$605,500Feb 2025 $7,3342024 Amount on Record Dec 1994 2 Owners on Record Assessor + 2 DocumentsUpdated Aug 2026

12 South Ave

0.4 acres

Last Sale Tax Bill Prior Sale Owner Records
$625,000Oct 2021 $12,0442024 Amount on Record Aug 2011 Owner on Record Assessor + 1 DocumentUpdated Aug 2026

14 South Ave

3 bd · 1 ba · 870 sqft · built 1929 · 0.46 acres

Last Sale Tax Bill Prior Sale Owner Records
$11,5762024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

16 South Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,3852024 Owner on Record Owner Occupied AssessorUpdated Aug 2026

18 South Ave

0.719 acres

Last Sale Tax Bill Prior Sale Owner Records
$567,000Mar 2021 $11,7952024 Amount on Record Sep 2020 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2026

19 South Ave

4 bd · 2.5 ba · 2,313 sqft · built 2016 · 0.4 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,025,000Apr 2019 $15,4442024 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

20 South Ave

0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
$252024 Owner on Record Owner Occupied AssessorUpdated Aug 2026

21 South Ave

3 bd · 1 ba · 1,184 sqft · built 1957 · 0.7 acres

Last Sale Tax Bill Prior Sale Owner Records
$490,000Sep 2017 $12,0692024 Amount on Record Apr 2016 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

22 South Ave

3 bd · 1 ba · 783 sqft · built 1942 · 0.5 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,8792024 Owner on Record Owner Occupied AssessorUpdated Oct 2026

24 South Ave

1 acres

Last Sale Tax Bill Prior Sale Owner Records
$630,000Sep 2025 $9,1512024 Owner on Record Assessor + 1 DocumentUpdated Aug 2026

25 South Ave

3 bd · 1 ba · 981 sqft · built 1977 · 0.489 acres

Last Sale Tax Bill Prior Sale Owner Records
$525,000Dec 2023 $6,1802024 Amount on Record Nov 2004 2 Owners on Record Assessor + 1 DocumentUpdated Aug 2026

27 South Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,6382024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

29 South Ave

1 ba · 720 sqft · built 1935 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$460,000Sep 2018 $12,8442024 Amount on Record Apr 2000 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

30 South Ave

1 acres

Last Sale Tax Bill Prior Sale Owner Records
$235,000Nov 2000 $11,1152024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

31 South Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,7812024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

32 South Ave

1 acres

Last Sale Tax Bill Prior Sale Owner Records
$650,000Jul 2022 $15,5832024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

33 South Ave

2 bd · 2 ba · 1,174 sqft · built 1935 · 0.46 acres

Last Sale Tax Bill Prior Sale Owner Records
$8,9692024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

34 South Ave

1 acres

Last Sale Tax Bill Prior Sale Owner Records
$15,4972024 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

36 South Ave

1 acres

Last Sale Tax Bill Prior Sale Owner Records
$220,000Jan 2000 $14,8582024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

37 South Ave

0.86 acres

Last Sale Tax Bill Prior Sale Owner Records
$327,500Apr 2010 $8,4372024 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

39 South Ave

0.439 acres

Last Sale Tax Bill Prior Sale Owner Records
$822,400Mar 2023 $19,2692023 Amount on Record Nov 2021 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

40 South Ave

1 acres

Last Sale Tax Bill Prior Sale Owner Records
$206,000Jan 2000 $4,9062024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

41 South Ave

3 bd · 3 ba · 1,589 sqft · built 1952 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$699,000Aug 2022 Amount on Record Nov 2021 2 Owners on Record AssessorUpdated Dec 2023

42 South Ave

1 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,4522024 2 Owners on Record Owner Occupied Assessor + 5 DocumentsUpdated Aug 2026

43 South Ave

0.3 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,8322024 Owner on Record Owner Occupied AssessorUpdated Aug 2026

44 South Ave

3 bd · 1 ba · 2,229 sqft · built 1935 · 0.919 acres

Last Sale Tax Bill Prior Sale Owner Records
$15,4442024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

45 South Ave

0.58 acres

Last Sale Tax Bill Prior Sale Owner Records
$570,000Mar 2006 $15,1952024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

46 South Ave

0.919 acres

Last Sale Tax Bill Prior Sale Owner Records
$13,4902024 Owner on Record Owner Occupied AssessorUpdated Aug 2026

50 South Ave

4 bd · 2 ba · 1,800 sqft · built 1966 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,8382024 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

51 South Ave

0.58 acres

Last Sale Tax Bill Prior Sale Owner Records
$12,0262024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

54 South Ave

1 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,2192024 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

55 South Ave

0.58 acres

Last Sale Tax Bill Prior Sale Owner Records
$412,000Nov 2016 $12,1402024 Amount on Record Oct 2012 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

56 South Ave

1 acres

Last Sale Tax Bill Prior Sale Owner Records
$12,4812024 2 Owners on Record Assessor + 2 DocumentsUpdated Aug 2026

57 South Ave

7 bd · 4 ba · 3,443 sqft · built 1961 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$490,000Oct 2016 $9,7342024 Amount on Record Aug 2015 2 Owners on Record Owner Occupied AssessorUpdated Sep 2026

59 South Ave

0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,2292024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

60 South Ave

0.86 acres

Last Sale Tax Bill Prior Sale Owner Records
$790,000Mar 2026 $10,8852024 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

61 South Ave

4 bd · 2 ba · 1,768 sqft · built 1962 · 0.3 acres

Last Sale Tax Bill Prior Sale Owner Records
$100,000Nov 2023 $8,5772024 Amount on Record Feb 1995 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

64 South Ave

0.569 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,5602024 2 Owners on Record Assessor + 1 DocumentUpdated Aug 2026

65 South Ave

0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$9,8362024 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

66 South Ave

0.43 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,9812024 2 Owners on Record Assessor + 1 DocumentUpdated Aug 2026

67 South Ave

4 bd · 2 ba · 2,715 sqft · built 1958 · 0.5 acres

Last Sale Tax Bill Prior Sale Owner Records
$435,000Jul 2013 $15,8872024 Owner on Record AssessorUpdated Aug 2026

70 South Ave

0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$8,1202024 Owner on Record Owner Occupied AssessorUpdated Aug 2026

Property Records in Nearby Streets