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Union St, Marlborough, MA Property Records

Middlesex County and Marlborough City property records for 34 addresses on Union St, Marlborough, MA · Last verified October 2026

Union St Highlights

Properties 40
Median Sale Price $215,000
Deeds and Mortgages on File 34
Median Price per Sqft $201
Owner Occupied 58%
Median Annual Tax Bill $4,976
Median Year Built 1955
Median Ownership Tenure 16 years

Properties on Union St

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

1 Union St

5 bd · 4.5 ba · 2,831 sqft · built 1953 · 0.284 acres

Last Sale Tax Bill Prior Sale Owner Records
$269,000Aug 2014 $5,4352025 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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6 Union St

3 bd · 2 ba · 1,757 sqft · built 1938 · 0.283 acres

Last Sale Tax Bill Prior Sale Owner Records
$98,000Mar 1993 $4,7452025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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14 Union St

3 bd · 2.5 ba · 1,008 sqft · built 1966 · 0.133 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 2003 $3,6742025 Amount on Record — 2 Owners on Record AssessorUpdated Jul 2026

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15 Union St

4 bd · 2.5 ba · 1,558 sqft · built 1954 · 0.286 acres

Last Sale Tax Bill Prior Sale Owner Records
$340,000Feb 2019 $4,8362025 —May 2004 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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25 Union St

267,805 sqft · built 1968 · 30.7 acres

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

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28 Union St

4 bd · 2.5 ba · 2,571 sqft · built 1942 · 0.787 acres

Last Sale Tax Bill Prior Sale Owner Records
$400,000Oct 2017 $6,4382025 Amount on Record Mar 2014 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Sep 2026

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30 Union St

3 bd · 2 ba · 2,548 sqft · built 1940 · 0.265 acres

Last Sale Tax Bill Prior Sale Owner Records
$121,000Mar 1996 $5,2602025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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37 Union St

4 bd · 2.5 ba · 2,515 sqft · built 2005 · 0.306 acres

Last Sale Tax Bill Prior Sale Owner Records
$789,500May 2026 $6,7632025 Amount on Record Nov 2014 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Sep 2026

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38 Union St

2 bd · 1 ba · 1,069 sqft · built 1938 · 0.128 acres

Last Sale Tax Bill Prior Sale Owner Records
$215,000May 2024 $3,6802025 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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42 Union St

2 bd · 1.5 ba · 1,349 sqft · built 1940 · 0.116 acres

Last Sale Tax Bill Prior Sale Owner Records
$84,000Dec 1994 $3,9002025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

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50 Union St

4 bd · 2 ba · 1,944 sqft · built 1952 · 0.239 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,9922025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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51 Union St

7 bd · 5.5 ba · 4,733 sqft · built 1823 · 0.996 acres

Last Sale Tax Bill Prior Sale Owner Records
$9,4112025 Owner on Record AssessorUpdated Apr 2026

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69 Union St

8 bd · 6.5 ba · 4,989 sqft · built 1900 · 0.396 acres

Last Sale Tax Bill Prior Sale Owner Records
$148,500Jan 1997 $7,9632025 Amount on Record Dec 1993 Owner on Record AssessorUpdated Sep 2026

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80 Union St

4 bd · 3.5 ba · 2,760 sqft · built 2005 · 0.296 acres

Last Sale Tax Bill Prior Sale Owner Records
$492,000Jan 2007 $7,7692025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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81 Union St

2 bd · 2 ba · 1,203 sqft · built 1955 · 0.264 acres

Last Sale Tax Bill Prior Sale Owner Records
$124,500Sep 1997 $4,0772025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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85 Union St

3 bd · 1.5 ba · 1,672 sqft · built 1950 · 0.267 acres

Last Sale Tax Bill Prior Sale Owner Records
$135,200Apr 1987 $4,8902025 2 Owners on Record Assessor + 4 DocumentsUpdated Jul 2026

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88 Union St

2 bd · 1.5 ba · 1,290 sqft · built 1948 · 0.229 acres

Last Sale Tax Bill Prior Sale Owner Records
$75,000Jun 1996 $4,0352025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

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92 Union St

2 bd · 1.5 ba · 2,989 sqft · built 1950 · 0.456 acres

Last Sale Tax Bill Prior Sale Owner Records
$315,000Jul 2002 Amount on Record Jun 1996 Owner on Record Assessor + 1 DocumentUpdated Aug 2026

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100 Union St

3 bd · 1.5 ba · 1,468 sqft · built 1938 · 0.766 acres

Last Sale Tax Bill Prior Sale Owner Records
—May 2025 $4,4062025 Amount on Record Jul 2009 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

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115 Union St

4 bd · 3 ba · 3,726 sqft · built 1963 · 0.876 acres

Last Sale Tax Bill Prior Sale Owner Records
$475,000Mar 2008 $7,5982025 Owner on Record Owner Occupied AssessorUpdated Aug 2026

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116 Union St

2 bd · 2 ba · 2,132 sqft · built 1960 · 0.669 acres

Last Sale Tax Bill Prior Sale Owner Records
—Sep 2024 $4,9902025 Amount on Record Aug 2022 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

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119 Union St

4 bd · 2.5 ba · 2,501 sqft · built 1995 · 0.386 acres

Last Sale Tax Bill Prior Sale Owner Records
$385,000Sep 2007 $6,9502025 Amount on Record Sep 2004 Owner on Record Owner Occupied AssessorUpdated Oct 2026

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120 Union St

3 bd · 1.5 ba · 1,666 sqft · built 1950 · 0.45 acres

Last Sale Tax Bill Prior Sale Owner Records
$240,000Jan 2010 $7,0892025 Owner on Record Assessor + 1 DocumentUpdated Aug 2026

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123 Union St

3 bd · 2 ba · 1,630 sqft · built 1960 · 0.201 acres

Last Sale Tax Bill Prior Sale Owner Records
$182,500Oct 1989 $4,9762025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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126 Union St

7 units · Built 1972 · 828 sq ft

Last Sale Median Tax Bill Median Sale    
$125,000Jun 2026 $2,1202025 $125,0007 units    

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157 Union St, #209

5 bd · 1.5 ba · 188,882 sqft · built 1913 · 19.3 acres

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

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196 Union St

4 bd · 1.5 ba · 2,377 sqft · built 1960 · 0.656 acres

Last Sale Tax Bill Prior Sale Owner Records
$165,000Jun 1993 $5,9382025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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197 Union St

1 bd · 1 ba · 9,972 sqft · built 1998 · 1.01 acres

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

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204 Union St

3 bd · 3 ba · 1,751 sqft · built 1939 · 0.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$380,000Aug 2018 $5,1612025 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Apr 2026

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209 Union St

4 bd · 2 ba · 1,754 sqft · built 1955 · 0.406 acres

Last Sale Tax Bill Prior Sale Owner Records
$285,000Sep 2010 $4,9912025 Owner on Record AssessorUpdated Jul 2026

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210 Union St

3 bd · 2.5 ba · 2,153 sqft · built 2000 · 0.326 acres

Last Sale Tax Bill Prior Sale Owner Records
$319,160Dec 2000 $6,6352025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

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215 Union St

3 bd · 2 ba · 1,682 sqft · built 1955 · 0.396 acres

Last Sale Tax Bill Prior Sale Owner Records
$224,900Dec 2000 $4,7392025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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223 Union St

2 bd · 1.5 ba · 1,459 sqft · built 1948 · 0.326 acres

Last Sale Tax Bill Prior Sale Owner Records
—Feb 2017 $3,8302025 Amount on Record Mar 2006 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

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224 Union St

3 bd · 2.5 ba · 1,823 sqft · built 1959 · 0.386 acres

Last Sale Tax Bill Prior Sale Owner Records
$350,000Oct 2015 $5,0512025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

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Property Records in Nearby Streets