Contra Costa County property records for 20 addresses on O St, Antioch, CA · Last verified July 2026
| Properties | 20 |
|---|---|
| Median Sale Price | $450,000 |
| Deeds and Mortgages on File | 21 |
| Median Price per Sqft | $332 |
| Owner Occupied | 30% |
| Median Annual Tax Bill | $6,264 |
| Median Year Built | 1964 |
| Median Ownership Tenure | 12 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
7,108 sqft · Built 1947 · 0.519 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $935,000Aug 2025 | $11,2352025 | Amount on Record Jun 2021 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
4,116 sqft · Built 1990 · 0.229 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $20,000Apr 1981 | $5,1252025 | 1 Name on Record | AssessorUpdated Jul 2026 |
6,000 sqft · Built 1948 · 0.669 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $770,000Jan 2015 | $7312025 | Amount on Record Nov 1999 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
3,300 sqft · Built 1957 · 0.459 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $200,000Sep 2012 | $7,2122025 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
4,800 sqft · Built 1964 · 0.209 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,380,500Dec 2014 | $10,0992025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
4,800 sqft · Built 1964 · 0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,380,500Dec 2014 | $10,4282025 | Amount on Record Dec 1998 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
4,800 sqft · Built 1965 · 0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,380,500Dec 2014 | $10,0992025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
2 bd · 1 ba · 978 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,5652025 | —Jan 2001 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
4,800 sqft · Built 1965 · 0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,380,500Dec 2014 | $10,0992025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
13,709 sqft · Built 1965 · 0.519 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,380,500Dec 2014 | $26,9002025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
3 bd · 1 ba · 977 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $325,000Oct 2021 | $4,4252025 | Amount on Record Nov 2007 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4,800 sqft · Built 1965 · 0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,380,500Dec 2014 | $10,0992025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
2 bd · 1 ba · 834 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $338,000Apr 2021 | $4,6602025 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4,800 sqft · Built 1965 · 0.189 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,380,500Dec 2014 | $10,0992025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
3,398 sqft · Built 1970 · 0.217 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $675,000Dec 2004 | $5,2282025 | —Mar 2004 | 2 Names on Record | AssessorUpdated Jul 2026 |
2 bd · 2 ba · 1,161 sqft · 0.114 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $222,000May 2016 | $3,4292025 | Amount on Record Jul 2007 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
3,398 sqft · Built 1970 · 0.097 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $675,000Dec 2004 | $5,4492025 | Amount on Record Dec 2003 | 2 Names on Record | AssessorUpdated Jul 2026 |
3 bd · 3 ba · 1,487 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $100,500Nov 2016 | $6,2642025 | Amount on Record Jun 2014 | 2 Names on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
4 bd · 1 ba · 1,313 sqft · 0.113 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $450,000Dec 2021 | $5,9082025 | —Feb 2016 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
3 bd · 1 ba · 1,157 sqft · 0.113 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $68,500Mar 2009 | $1,5582025 | Amount on Record Apr 2008 | 2 Names on Record | AssessorUpdated Jul 2026 |