Boulder County property records for 40 addresses on W William St, Superior, CO · Last verified August 2026
| Properties | 40 |
|---|---|
| Median Sale Price | $930,000 |
| Deeds and Mortgages on File | 99 |
| Median Price per Sqft | $480 |
| Owner Occupied | 55% |
| Median Annual Tax Bill | $5,699 |
| Median Year Built | 2023 |
| Median Ownership Tenure | 6 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
4 bd · 3.5 ba · 2,738 sqft · 0.144 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $418,000Jan 2020 | $6,6282025 | Sale Amount Aug 2007 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jun 2026 |
3 bd · 6.75 ba · 2,204 sqft · 0.163 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $465,000Nov 2025 | $2,7192025 | Sale Amount Dec 1992 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jun 2026 |
2 bd · 1 ba · 696 sqft · 0.174 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $440,000Sep 2025 | $2,6182025 | Sale Amount Jul 2023 | 1 Name on Record | Assessor + 3 DocumentsUpdated Jun 2026 |
2 bd · 1.75 ba · 1,589 sqft · 0.152 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $155,000Aug 2012 | $5,9622025 | —Jun 1977 | 1 Name on Record Owner Occupied | AssessorUpdated Jun 2026 |
3 bd · 3.25 ba · 1,973 sqft · 0.149 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,520,000Dec 2025 | $2,6012025 | Sale Amount May 2023 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
3 bd · 2.5 ba · 1,820 sqft · 0.164 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $208,000Aug 2012 | $6,7162025 | Sale Amount May 2004 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jun 2026 |
4 bd · 4.5 ba · 2,632 sqft · 0.163 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $290,000Feb 2015 | $5,9842025 | Sale Amount Apr 2008 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Jun 2026 |
2 bd · 1 ba · 576 sqft · 0.159 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $430,000Aug 2026 | $2,6862025 | 1 Name on Record | Assessor + 1 DocumentUpdated Aug 2026 |
5 bd · 3 ba · 4,265 sqft · 0.154 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $590,000Jul 2021 | $5,6992025 | Sale Amount May 2012 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jun 2026 |
3 bd · 3 ba · 3,946 sqft · 0.153 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,070,000Jun 2026 | $2,6372025 | Sale Amount Jul 2025 | 1 Name on Record | Assessor + 4 DocumentsUpdated Aug 2026 |
6 bd · 5 ba · 2,729 sqft · 0.16 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $275,500Aug 2010 | $8,9952025 | Sale Amount Sep 1999 | 2 Names on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
1 bd · 2.5 ba · 1,456 sqft · 0.155 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,410,000Jul 2017 | $5,4922025 | Sale Amount Jun 1999 | 1 Name on Record Owner Occupied | Assessor + 5 DocumentsUpdated Jun 2026 |
4 bd · 3.5 ba · 1,973 sqft · 0.148 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,450,000May 2025 | $4,2192025 | Sale Amount Jul 2024 | 1 Name on Record Owner Occupied | Assessor + 6 DocumentsUpdated Jun 2026 |
3 bd · 1.5 ba · 2,628 sqft · 0.312 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $267,000Mar 2003 | $3,7632025 | Sale Amount Jul 2000 | 1 Name on Record | Assessor + 1 DocumentUpdated Jun 2026 |
4 bd · 2.25 ba · 2,969 sqft · 0.17 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,865,000Apr 2026 | $2,7742025 | Sale Amount Feb 2025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jun 2026 |
3 bd · 3.25 ba · 2,484 sqft · 0.155 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $600,000Dec 2020 | $7,5892025 | Sale Amount Aug 2018 | 1 Name on Record Owner Occupied | Assessor + 6 DocumentsUpdated Jul 2026 |
4 bd · 2 ba · 1,082 sqft · 0.151 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $650,000Aug 2023 | $1,1572023 | 2 Names on Record | AssessorUpdated Mar 2024 |
3 bd · 3 ba · 2,113 sqft · 0.179 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $280,000Mar 2009 | $7,5482025 | Sale Amount Aug 2004 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jun 2026 |
3 bd · 3.25 ba · 3,339 sqft · 0.321 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $189,500Jul 2007 | $6,5662025 | Sale Amount May 1998 | 2 Names on Record | AssessorUpdated Jun 2026 |
3 bd · 1 ba · 1,074 sqft · 0.143 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $388,000Dec 2016 | $2,5482025 | Sale Amount Jan 1997 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jun 2026 |
4 bd · 3 ba · 2,491 sqft · 0.162 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $140,000Sep 2008 | $5,5982025 | Sale Amount Jul 2006 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
4 bd · 3.25 ba · 2,111 sqft · 0.165 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $601,000Aug 2020 | $8,2962025 | Sale Amount May 2014 | 2 Names on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jun 2026 |
3 bd · 2 ba · 1,486 sqft · 0.154 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $930,000Jun 2026 | $2,2732025 | Sale Amount Nov 2025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
3 bd · 2 ba · 1,120 sqft · 0.322 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $125,000Jun 1995 | $3,8202025 | 2 Names on Record | AssessorUpdated Jun 2026 |
2 bd · 1.5 ba · 1,792 sqft · 0.374 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $795,000Jun 2026 | $4,1162025 | Sale Amount Mar 2023 | 1 Name on Record | Assessor + 4 DocumentsUpdated Aug 2026 |
3 bd · 3 ba · 1,654 sqft · 0.15 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $279,507Jul 2017 | $2,6072025 | Sale Amount Apr 2006 | 1 Name on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
2 bd · 3.25 ba · 3,627 sqft · 0.158 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,652,034Aug 2025 | $3,1852025 | Sale Amount Jun 2024 | 2 Names on Record Owner Occupied | Assessor + 7 DocumentsUpdated Jun 2026 |
3 bd · 1.75 ba · 1,068 sqft · 0.266 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $21,500Jun 1976 | $3,6632025 | 2 Names on Record Owner Occupied | AssessorUpdated Jun 2026 |
3 bd · 2.25 ba · 1,658 sqft · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $570,860Dec 2019 | $6,1552025 | —Aug 2018 | 2 Names on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jun 2026 |
3 bd · 3 ba · 2,285 sqft · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $560,000Dec 2019 | $6,4322025 | —Dec 2019 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jun 2026 |
3 bd · 2.25 ba · 1,658 sqft · 0.158 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $517,000Nov 2019 | $7,1482025 | 2 Names on Record | AssessorUpdated Jun 2026 |
3 bd · 2.75 ba · 2,181 sqft · 0.158 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $512,000Nov 2019 | $6,3552025 | 2 Names on Record | Assessor + 4 DocumentsUpdated Aug 2026 |
0.316 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,684,250Feb 2024 | $4432023 | —Jul 2018 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Apr 2024 |
3 bd · 2.75 ba · 2,285 sqft · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $525,000Nov 2019 | $7,6592025 | —Aug 2018 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jun 2026 |
3 bd · 3 ba · 2,159 sqft · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $842,500Dec 2025 | $7,3512025 | Sale Amount Dec 2019 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jul 2026 |
7 bd · 5.75 ba · 3,880 sqft · 0.155 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,695,000Apr 2024 | $9,2082025 | 2 Names on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jun 2026 |
0.166 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Aug 1988 | $11,1972025 | —Feb 1984 | 1 Name on Record | AssessorUpdated Jun 2026 |
2 bd · 1.75 ba · 1,691 sqft · 0.156 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,041,000Jun 2025 | $5,4812025 | Sale Amount — | 2 Names on Record Owner Occupied | Assessor + 6 DocumentsUpdated Aug 2026 |
7 bd · 6 ba · 4,269 sqft · 0.155 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,050,000Nov 2022 | $9,3922025 | —Nov 2022 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jun 2026 |
5 bd · 5 ba · 4,622 sqft · 0.153 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,100,000Jan 2023 | $9,4202025 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jun 2026 |