Contra Costa County property records for 8 addresses on Onyx Ct, Hercules, CA · Last verified August 2026
| Properties | 8 |
|---|---|
| Median Sale Price | $339,000 |
| Deeds and Mortgages on File | 27 |
| Median Price per Sqft | $125 |
| Owner Occupied | 88% |
| Median Annual Tax Bill | $9,092 |
| Median Year Built | 1997 |
| Median Ownership Tenure | 27 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
5 bd · 3 ba · 2,809 sqft · 0.192 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $320,000Jan 1998 | $8,8482025 | —Jan 2025 | 2 Names on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
5 bd · 3 ba · 2,828 sqft · 0.165 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $335,000Mar 1999 | $8,5192025 | —Mar 1999 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jul 2026 |
5 bd · 3.5 ba · 3,338 sqft · 0.192 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $332,000Feb 1999 | $10,0312025 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jul 2026 |
5 bd · 3 ba · 2,828 sqft · 0.146 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $323,500Apr 1999 | $7,8262025 | 2 Names on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jul 2026 |
5 bd · 3 ba · 2,567 sqft · 0.171 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $339,000Apr 1998 | $8,5912025 | Amount on Record Feb 1997 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
4 bd · 3 ba · 2,828 sqft · 0.166 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $850,000Jan 2020 | $13,8032025 | Amount on Record Feb 1998 | 2 Names on Record Owner Occupied | Assessor + 5 DocumentsUpdated Jul 2026 |
4 bd · 3 ba · 2,791 sqft · 0.208 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $350,000Nov 1996 | $9,0922025 | —Jan 2020 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
5 bd · 3 ba · 2,791 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $690,000Jan 2015 | $12,5122025 | Amount on Record Feb 2005 | 1 Name on Record Owner Occupied | Assessor + 8 DocumentsUpdated Jul 2026 |