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