Boulder County property records for 19 addresses on Island Cir, Boulder, CO · Last verified August 2026
| Properties | 19 |
|---|---|
| Median Sale Price | $1,800,000 |
| Deeds and Mortgages on File | 41 |
| Median Price per Sqft | $456 |
| Owner Occupied | 84% |
| Median Annual Tax Bill | $9,827 |
| Median Year Built | 1975 |
| Median Ownership Tenure | 8 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
4 bd · 3.25 ba · 3,276 sqft · 0.342 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $187,500Sep 1991 | $6,8802025 | Sale Amount Jul 1987 | 2 Names on Record Owner Occupied | AssessorUpdated Jun 2026 |
4 bd · 3.5 ba · 3,042 sqft · 0.375 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,600,000Apr 2026 | $8,6152025 | Sale Amount Jan 2026 | 2 Names on Record Owner Occupied | Assessor + 7 DocumentsUpdated Jul 2026 |
4 bd · 3.5 ba · 4,176 sqft · 0.413 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $422,500Sep 1999 | $9,8272025 | —Oct 1991 | 1 Name on Record Owner Occupied | AssessorUpdated Jun 2026 |
4 bd · 4.75 ba · 5,430 sqft · 0.451 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,400,000Nov 2025 | $10,6442025 | Sale Amount Dec 2020 | 2 Names on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jun 2026 |
0.615 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $13,4182025 | 2 Names on Record | Assessor + 1 DocumentUpdated Jun 2026 |
5 bd · 3.75 ba · 4,156 sqft · 0.312 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,950,000Apr 2026 | $11,9562025 | Sale Amount Nov 2023 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
5 bd · 5.25 ba · 5,874 sqft · 0.338 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $112,500Apr 1984 | $11,6822025 | Sale Amount Nov 1980 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
4 bd · 4 ba · 5,273 sqft · 0.594 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,075,000May 2019 | $19,6242025 | —Jan 2021 | 1 Name on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jun 2026 |
5 bd · 4.5 ba · 5,818 sqft · 0.27 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,025,000Apr 2018 | $13,2502025 | Sale Amount Oct 2014 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jun 2026 |
4 bd · 3.25 ba · 2,926 sqft · 0.307 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $644,000May 2006 | $8,6572025 | Sale Amount Nov 1990 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
4 bd · 6.75 ba · 3,351 sqft · 0.503 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $600,000Aug 2010 | $9,5402025 | Sale Amount May 2004 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jun 2026 |
3 bd · 2.75 ba · 2,756 sqft · 0.286 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $629,000Aug 2005 | $9,1432025 | Sale Amount Mar 2004 | 1 Name on Record Owner Occupied | AssessorUpdated Jun 2026 |
4 bd · 4.25 ba · 4,131 sqft · 0.285 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,125,000Jun 2024 | $11,7482025 | Sale Amount Jul 2018 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jun 2026 |
5 bd · 4.25 ba · 3,479 sqft · 0.442 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,289,000Oct 2024 | $9,2272025 | Sale Amount Jun 2016 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jun 2026 |
2 bd · 1.75 ba · 2,435 sqft · 0.291 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Oct 1989 | $8,4962025 | Sale Amount Oct 1987 | 1 Name on Record | AssessorUpdated Jun 2026 |
5 bd · 3 ba · 3,947 sqft · 0.383 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,575,000May 2021 | $9,4912025 | Sale Amount Aug 2020 | 2 Names on Record | Assessor + 6 DocumentsUpdated Jun 2026 |
3 bd · 2.75 ba · 3,696 sqft · 0.284 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $240,000Apr 1984 | $9,8792025 | Sale Amount May 1981 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jun 2026 |
4 bd · 2.25 ba · 2,579 sqft · 0.415 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $390,000Jun 2000 | $7,7952025 | Sale Amount Aug 1990 | 2 Names on Record Owner Occupied | AssessorUpdated Jun 2026 |
4 bd · 3 ba · 3,940 sqft · 0.29 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,800,000Apr 2025 | $10,4242025 | Sale Amount Aug 2021 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jun 2026 |