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Treadwell Ave, Westport, CT Property Records

Westport Town property records for 36 addresses on Treadwell Ave, Westport, CT · Last verified October 2026

Treadwell Ave Highlights

Properties 36
Median Sale Price $1,300,000
Deeds and Mortgages on File 50
Median Price per Sqft $653
Owner Occupied 75%
Median Annual Tax Bill $10,628
Median Year Built 1940
Median Ownership Tenure 11 years

Properties on Treadwell Ave

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

3 Treadwell Ave

470 sqft · built 1940 · 0.3 acres

Last Sale Tax Bill Prior Sale Owner Records
$375,000Nov 1999 $8,1512025 2 Owners on File AssessorUpdated Jul 2026

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5 Treadwell Ave

3 bd · 2 ba · 1,552 sqft · built 1955 · 0.319 acres

Last Sale Tax Bill Prior Sale Owner Records
$312,500Nov 1999 $7,6972025 Owner on File AssessorUpdated Aug 2026

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7 Treadwell Ave

3 bd · 2 ba · 1,590 sqft · built 1945 · 0.28 acres

Last Sale Tax Bill Prior Sale Owner Records
$60,000Sep 1980 $8,0852025 Owner on File Owner Occupied AssessorUpdated Jul 2026

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9 Treadwell Ave

3 bd · 2 ba · 1,510 sqft · built 1928 · 0.28 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,8992025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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10 Treadwell Ave

4 bd · 3 ba · 2,488 sqft · built 1891 · 0.519 acres

Last Sale Tax Bill Prior Sale Owner Records
$748,000Apr 2018 $9,8942025 Amount on File Dec 2005 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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11 Treadwell Ave

4 bd · 2.5 ba · 2,629 sqft · built 1950 · 0.51 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,095,000Apr 2015 $12,3952025 Amount on File Aug 1993 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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12 Treadwell Ave

4 bd · 3.5 ba · 3,531 sqft · built 1967 · 0.61 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,350,000Jun 2016 $16,8832025 Amount on File Apr 2010 2 Owners on File Owner Occupied Assessor + 3 DocumentsUpdated Oct 2026

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14 Treadwell Ave

3 bd · 2.5 ba · 2,332 sqft · built 1890 · 0.36 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,525,000Jul 2024 $10,5692025 Amount on File Jul 2008 2 Owners on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

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15 Treadwell Ave

4 bd · 2 ba · 1,838 sqft · built 1888 · 0.53 acres

Last Sale Tax Bill Prior Sale Owner Records
$975,000Nov 2006 $10,0152025 Amount on File Mar 1999 Owner on File Owner Occupied AssessorUpdated Oct 2026

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17 Treadwell Ave

3 bd · 2 ba · 1,102 sqft · built 1860 · 0.63 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,300,000Jun 2025 $9,6372025 Amount on File Jul 2018 2 Owners on File Assessor + 4 DocumentsUpdated Aug 2026

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18 Treadwell Ave

5 bd · 3.5 ba · 3,876 sqft · built 2024 · 0.58 acres

Last Sale Tax Bill Prior Sale Owner Records
$998,000May 2021 $14,0662025 Amount on File Aug 2005 2 Owners on File Owner Occupied Assessor + 6 DocumentsUpdated Oct 2026

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19 Treadwell Ave

6 bd · 5 ba · 3,638 sqft · built 2022 · 0.48 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,649,000Jul 2023 $24,1792025 Amount on File Jun 2022 2 Owners on File Owner Occupied Assessor + 3 DocumentsUpdated Sep 2026

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20 Treadwell Ave

4 bd · 2 ba · 2,240 sqft · built 1931 · 0.81 acres

Last Sale Tax Bill Prior Sale Owner Records
$118,000Jan 1982 $10,0182025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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21 Treadwell Ave

3 bd · 3.5 ba · 2,821 sqft · built 1950 · 0.48 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,6092025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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22 Treadwell Ave

4 bd · 4.5 ba · 3,144 sqft · built 1892 · 0.789 acres

Last Sale Tax Bill Prior Sale Owner Records
$500,000Nov 1996 $14,6982025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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23 Treadwell Ave

2 bd · 1.5 ba · 1,890 sqft · built 1925 · 0.319 acres

Last Sale Tax Bill Prior Sale Owner Records
$9,0912025 Owner on File Assessor + 1 DocumentUpdated Jul 2026

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25 Treadwell Ave

6 bd · 5.5 ba · 4,368 sqft · built 2021 · 0.45 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,891,500May 2021 $23,1152025 Amount on File Aug 2020 2 Owners on File Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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26 Treadwell Ave

4 bd · 3.5 ba · 2,866 sqft · built 1993 · 0.58 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,150,000Mar 2026 $13,2912025 Amount on File Feb 2024 Owner on File Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

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27 Treadwell Ave

5 bd · 4.5 ba · 4,395 sqft · built 2005 · 0.369 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,300,000Feb 2020 $17,7362025 Amount on File Oct 2006 Owner on File Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

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28 Treadwell Ave

3 bd · 3 ba · 1,651 sqft · built 1913 · 0.48 acres

Last Sale Tax Bill Prior Sale Owner Records
$550,000Jun 2020 $7,6822025 Amount on File Jan 2016 Owner on File Assessor + 2 DocumentsUpdated Oct 2026

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29 Treadwell Ave

6 bd · 5.5 ba · 4,337 sqft · built 2020 · 0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,665,000Dec 2020 $22,4112025 Amount on File May 2020 2 Owners on File Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

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30 Treadwell Ave

3 bd · 2.5 ba · 1,659 sqft · built 1934 · 0.5 acres

Last Sale Tax Bill Prior Sale Owner Records
$265,000Feb 2022 $10,3752025 Owner on File Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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32 Treadwell Ave

4 bd · 4.5 ba · 3,707 sqft · built 1918 · 0.73 acres

Last Sale Tax Bill Prior Sale Owner Records
$925,000Mar 2002 $18,0792025 Amount on File Oct 1998 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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33 Treadwell Ave

4 bd · 3 ba · 2,716 sqft · built 1958 · 0.65 acres

Last Sale Tax Bill Prior Sale Owner Records
$187,500Nov 1999 $10,6282025 Amount on File May 1998 2 Owners on File AssessorUpdated Jul 2026

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34 Treadwell Ave

4 bd · 2.5 ba · 2,636 sqft · built 1998 · 0.53 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,100,000Sep 2007 $11,8842025 Amount on File Aug 2004 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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35 Treadwell Ave

4 bd · 3.5 ba · 2,646 sqft · built 1957 · 0.51 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,030,000Jul 2015 $12,2762025 —Jul 2010 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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36 Treadwell Ave

4 bd · 2 ba · 1,976 sqft · built 1900 · 0.43 acres

Last Sale Tax Bill Prior Sale Owner Records
$760,000Jun 2006 $8,7872025 Owner on File AssessorUpdated Jul 2026

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40 Treadwell Ave

5 bd · 2 ba · 2,417 sqft · built 1910 · 0.35 acres

Last Sale Tax Bill Prior Sale Owner Records
$440,000Jun 1999 $8,7742025 Owner on File Owner Occupied AssessorUpdated Oct 2026

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41 Treadwell Ave

5 bd · 4.5 ba · 4,837 sqft · built 1933 · 0.969 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,291,875May 2019 $21,8442025 Amount on File Aug 2009 2 Owners on File Owner Occupied Assessor + 3 DocumentsUpdated Oct 2026

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42 Treadwell Ave

4 bd · 2 ba · 1,706 sqft · built 1900 · 0.369 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,175,000Dec 2023 $9,8522025 Amount on File Nov 2019 2 Owners on File Owner Occupied Assessor + 3 DocumentsUpdated Oct 2026

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43 Treadwell Ave

5 bd · 4 ba · 3,934 sqft · built 1933 · 0.5 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,399,000Jul 2006 $15,4582025 Amount on File Jun 2003 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

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44 Treadwell Ave

4 bd · 2.5 ba · 2,025 sqft · built 1936 · 0.319 acres

Last Sale Tax Bill Prior Sale Owner Records
$8,6662025 Owner on File Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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46 Treadwell Ave

2 bd · 1 ba · 1,817 sqft · built 1949 · 0.45 acres

Last Sale Tax Bill Prior Sale Owner Records
$8,8082025 Owner on File AssessorUpdated Jul 2026

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47 Treadwell Ave

5 bd · 5.5 ba · 4,707 sqft · built 2009 · 0.55 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,650,000Nov 2009 $22,8092025 Amount on File Sep 2008 Owner on File Owner Occupied AssessorUpdated Oct 2026

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49 Treadwell Ave

4 bd · 4.5 ba · 4,676 sqft · built 2009 · 0.539 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,350,000Dec 2009 $21,7642025 Amount on File Sep 2008 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

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50 Treadwell Ave

3 bd · 1.5 ba · 1,572 sqft · built 1900 · 0.71 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,101,000Apr 2022 $12,2502025 2 Owners on File Assessor + 3 DocumentsUpdated Jul 2026

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