Contra Costa County property records for 9 addresses on Mount Duncan Dr, Clayton, CA · Last verified July 2026
| Properties | 9 |
|---|---|
| Median Sale Price | $840,000 |
| Deeds and Mortgages on File | 14 |
| Median Price per Sqft | $404 |
| Owner Occupied | 89% |
| Median Annual Tax Bill | $9,846 |
| Median Year Built | 1978 |
| Median Ownership Tenure | 11 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
4 bd · 2.5 ba · 2,177 sqft · 0.228 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $363,000Jul 1999 | $7,5782025 | —Nov 2002 | 2 Names on Record | AssessorUpdated Jul 2026 |
4 bd · 2 ba · 2,325 sqft · 0.279 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,065,000Oct 2025 | $6,7402025 | Amount on Record Apr 1994 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
5 bd · 3 ba · 2,960 sqft · 0.252 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $625,000Mar 2013 | $9,8462025 | Amount on Record Jul 2006 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
4 bd · 2 ba · 2,078 sqft · 0.243 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $840,000Apr 2017 | $12,1102025 | Amount on Record Dec 2014 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4 bd · 3 ba · 2,177 sqft · 0.226 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,015,000Oct 2025 | $12,9442025 | Amount on Record Aug 2021 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
4 bd · 3 ba · 2,481 sqft · 0.264 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $605,000Oct 2011 | $9,7382025 | Amount on Record Sep 2004 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4 bd · 2 ba · 2,078 sqft · 0.275 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $754,000Dec 2015 | $11,7022025 | —Jun 2009 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
5 bd · 3 ba · 2,960 sqft · 0.228 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,200,000Jul 2021 | $14,5962025 | Amount on Record Jun 2021 | 2 Names on Record Owner Occupied | Assessor + 5 DocumentsUpdated Jul 2026 |
4 bd · 2 ba · 2,078 sqft · 0.265 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $220,000Mar 1989 | $7,4372025 | —May 2021 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |