Middlesex County and Watertown City property records for 46 addresses on Union St, Watertown, MA · Last verified October 2026
| Properties | 46 |
|---|---|
| Median Sale Price | $749,000 |
| Deeds and Mortgages on File | 67 |
| Median Price per Sqft | $441 |
| Owner Occupied | 48% |
| Median Annual Tax Bill | $10,929 |
| Median Year Built | 1909 |
| Median Ownership Tenure | 8 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
4 bd · 2 ba · 3,082 sqft · built 1915 · 0.142 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,2492026 | 2 Owners on Record Owner Occupied | Assessor + 4 DocumentsUpdated Oct 2026 |
4 bd · 3.5 ba · 3,062 sqft · built 1910 · 0.163 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $117,496May 2013 | $13,4222026 | Amount on Record May 1998 | 2 Owners on Record | AssessorUpdated Oct 2026 |
4 bd · 3 ba · 2,868 sqft · built 1909 · 0.121 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $450,000Aug 2001 | $13,8192026 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2026 |
7 bd · 3 ba · 3,808 sqft · built 1910 · 0.131 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jun 2018 | $13,8422026 | Owner on Record | Assessor + 1 DocumentUpdated Oct 2026 |
5 bd · 4 ba · 3,375 sqft · built 1920 · 0.124 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $352,000Aug 1998 | $15,0892026 | 2 Owners on Record Owner Occupied | AssessorUpdated Oct 2026 |
2 bd · 1 ba · 1,122 sqft · built 1927 · 0.13 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $334,000Jul 2007 | $6,0072025 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
6 bd · 2 ba · 2,874 sqft · built 1917 · 0.112 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,8982026 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2026 |
2 bd · 1 ba · 1,284 sqft · built 1927 · 0.13 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $312,000Mar 2008 | $6,3612026 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2026 |
2 bd · 1.5 ba · 1,147 sqft · built 1890 · 0.107 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $570,000May 2020 | $7,4352026 | Amount on Record Jun 2011 | Owner on Record | Assessor + 2 DocumentsUpdated Oct 2026 |
3 bd · 1.5 ba · 1,242 sqft · built 1890 · 0.107 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $605,000Aug 2018 | $7,6522026 | Amount on Record Aug 2016 | 2 Owners on Record Owner Occupied | Assessor + 5 DocumentsUpdated Oct 2026 |
8 bd · 3 ba · 3,597 sqft · built 1920 · 0.117 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $53,3172026 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Oct 2026 |
3 bd · 1.5 ba · 1,125 sqft · built 1915 · 0.113 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $460,000Jul 2015 | $7,4272026 | Amount on Record Jul 2008 | Owner on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2026 |
5 bd · 2 ba · 2,328 sqft · built 1915 · 0.113 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $420,000Aug 2008 | $9,6372026 | 2 Owners on Record | AssessorUpdated Oct 2026 |
5 bd · 5.5 ba · 3,252 sqft · built 1900 · 0.163 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $890,000Jan 2019 | $15,3822026 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Oct 2026 |
7 bd · 2 ba · 3,349 sqft · built 1900 · 0.109 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $452,000Jun 2001 | $12,6982025 | Amount on Record Aug 1998 | Owner on Record | AssessorUpdated Oct 2026 |
4 bd · 3 ba · 3,103 sqft · built 1880 · 0.099 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $13,8692026 | 2 Owners on Record | AssessorUpdated Oct 2026 |
6 bd · 3 ba · 3,837 sqft · built 1920 · 0.065 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $13,7812026 | 2 Owners on Record Owner Occupied | AssessorUpdated Oct 2026 |
6 bd · 3 ba · 4,857 sqft · built 1890 · 0.094 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $275,000Dec 1990 | $13,4922025 | 2 Owners on Record | AssessorUpdated Apr 2026 |
4 bd · 2 ba · 1,772 sqft · built 1900 · 0.077 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $975,000Jun 2024 | $11,2852026 | Amount on Record Dec 2015 | Owner on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2026 |
3 bd · 1.5 ba · 2,286 sqft · built 1900 · 0.11 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,6382026 | 2 Owners on Record Owner Occupied | AssessorUpdated Oct 2026 |
5 bd · 2 ba · 2,300 sqft · built 1900 · 0.07 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Mar 2018 | $11,0402025 | 2 Owners on Record | Assessor + 1 DocumentUpdated Apr 2026 |
3 bd · 1 ba · 2,490 sqft · built 1900 · 0.11 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $700,000Jan 2023 | $8,1462026 | Amount on Record May 2019 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2026 |
4 bd · 1 ba · 1,545 sqft · built 1905 · 0.121 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $749,000Jun 2024 | $7,5232025 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
3 bd · 2 ba · 1,412 sqft · built 1900 · 0.063 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $578,500Jun 2014 | $11,5562026 | —Mar 2013 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2026 |
4 bd · 2 ba · 3,413 sqft · built 1900 · 0.163 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $14,1652026 | 2 Owners on Record | Assessor + 1 DocumentUpdated Oct 2026 |
3 bd · 1 ba · 1,584 sqft · built 1888 · 0.073 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $700,000Aug 2025 | $8,6182026 | Owner on Record | Assessor + 3 DocumentsUpdated Oct 2026 |
5 bd · 1.5 ba · 2,190 sqft · built 1900 · 0.171 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $760,000Feb 2022 | $8,7362026 | Amount on Record Dec 2017 | 2 Owners on Record Owner Occupied | Assessor + 4 DocumentsUpdated Oct 2026 |
6 bd · 1.5 ba · 2,183 sqft · built 1900 · 0.171 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,699,000Jul 2020 | $8,8242026 | Owner on Record Owner Occupied | AssessorUpdated Oct 2026 |
4 bd · 2.5 ba · 2,050 sqft · built 1900 · 0.167 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $655,000Mar 2018 | $9,9612026 | Amount on Record May 2011 | 2 Owners on Record Owner Occupied | Assessor + 4 DocumentsUpdated Oct 2026 |
4 bd · 2.5 ba · 2,050 sqft · built 1900 · 0.154 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $450,000Jun 2010 | $9,9612026 | 2 Owners on Record | Assessor + 1 DocumentUpdated Oct 2026 |
3 bd · 1.5 ba · 1,144 sqft · built 1910 · 0.067 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $650,080Jul 2018 | $10,1082026 | Amount on Record Aug 2011 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2026 |
4 bd · 2 ba · 2,588 sqft · built 1920 · 0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,7842026 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2026 |
10 bd · 2 ba · 2,444 sqft · built 1925 · 0.136 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,3702026 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2026 |
4 bd · 2 ba · 2,799 sqft · built 1920 · 0.156 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $440,000Jul 2021 | $13,0702026 | Amount on Record Apr 2006 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Oct 2026 |
4 bd · 2 ba · 2,844 sqft · built 1925 · 0.148 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $830,000Dec 2016 | $12,5702026 | Amount on Record May 2012 | Owner on Record | Assessor + 2 DocumentsUpdated Oct 2026 |
5 bd · 3 ba · 2,858 sqft · built 1925 · 0.126 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,100,000Jun 2021 | $12,7382026 | 2 Owners on Record | Assessor + 4 DocumentsUpdated Oct 2026 |
6 bd · 3.5 ba · 3,193 sqft · built 1925 · 0.129 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $662,000Sep 2004 | $14,4452026 | 2 Owners on Record | AssessorUpdated Oct 2026 |
1 bd · 1 ba · 730 sqft · built 1890
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,3272025 | Owner on Record | AssessorUpdated Jul 2026 |
3 bd · 2 ba · 1,894 sqft · built 1890 · 0.096 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,5532024 | 2 Owners on Record | Assessor + 1 DocumentUpdated May 2024 |
4 bd · 1 ba · 1,138 sqft · built 1890
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,6772025 | Owner on Record Owner Occupied | AssessorUpdated Jul 2026 |
4 bd · 2 ba · 3,675 sqft · built 1905 · 0.108 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $13,9042026 | 2 Owners on Record | Assessor + 1 DocumentUpdated Oct 2026 |
5 bd · 2 ba · 1,946 sqft · built 1898 · 0.112 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $450,000Jan 2014 | $10,3502026 | Amount on Record Aug 2006 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2026 |
3 ba · 6,480 sqft · built 1999 · 0.295 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $17,5412026 | Owner on Record | Assessor + 1 DocumentUpdated Oct 2026 |
6 bd · 2 ba · 2,936 sqft · built 1973 · 0.117 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $10,6852025 | Owner on Record | Assessor + 1 DocumentUpdated Oct 2026 |
4 bd · 3 ba · 2,880 sqft · built 1925 · 0.073 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,8842026 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2026 |
6 bd · 3 ba · 3,024 sqft · built 1930 · 0.095 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record | AssessorUpdated Oct 2026 |