Contra Costa County property records for 21 addresses on Roundhill Pl, Clayton, CA · Last verified August 2026
| Properties | 21 |
|---|---|
| Median Sale Price | $1,200,000 |
| Deeds and Mortgages on File | 32 |
| Median Price per Sqft | $326 |
| Owner Occupied | 86% |
| Median Annual Tax Bill | $10,043 |
| Median Year Built | 1977 |
| Median Ownership Tenure | 13 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
6 bd · 5.5 ba · 6,417 sqft · 0.901 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $450,000Apr 1990 | $18,3842025 | —Jun 2016 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
3 bd · 3 ba · 3,697 sqft · 0.68 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $575,000Feb 1996 | $11,8312025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
8 bd · 5.5 ba · 6,430 sqft · 0.977 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $397,500Jan 1993 | $13,8982025 | —Dec 2000 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
5 bd · 5 ba · 6,061 sqft · 1.02 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $18,9002025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
4 bd · 4.5 ba · 5,088 sqft · 0.999 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,075,000Jul 2025 | $21,8582025 | Amount on Record Apr 2017 | 2 Names on Record | Assessor + 6 DocumentsUpdated Jul 2026 |
4 bd · 3.5 ba · 3,067 sqft · 0.75 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $550,000Mar 2000 | $10,6222025 | Amount on Record Oct 1999 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4 bd · 2.5 ba · 2,526 sqft · 1.37 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,250,000Aug 2017 | $20,6602025 | Amount on Record Aug 2001 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
4 bd · 2.5 ba · 2,336 sqft · 1.09 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,6402025 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jul 2026 |
5 bd · 4.5 ba · 3,946 sqft · 1.17 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,290,000Dec 2019 | $6,8662025 | Amount on Record Oct 2018 | 1 Name on Record | Assessor + 6 DocumentsUpdated Jul 2026 |
4 bd · 2 ba · 2,465 sqft · 0.751 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,0172025 | —Jul 2003 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
5 bd · 3.5 ba · 3,957 sqft · 1.15 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $850,000Aug 2004 | $20,7382025 | Amount on Record Sep 1997 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
5 bd · 3.5 ba · 3,724 sqft · 1.54 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,1352025 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
4 bd · 3 ba · 3,070 sqft · 1.15 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $800,000Oct 2014 | $10,6032025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
4 bd · 2.5 ba · 2,010 sqft · 0.369 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,200,000May 2025 | $7,9672025 | Amount on Record Feb 2012 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jul 2026 |
4 bd · 2.5 ba · 2,681 sqft · 0.327 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $650,000Sep 2014 | $9,8952025 | —Sep 2014 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
4 bd · 2.5 ba · 2,368 sqft · 0.304 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $279,000Sep 1994 | $6,7862025 | —Sep 1994 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
2 bd · 1 ba · 1,678 sqft · 0.488 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $200,500Sep 2006 | $9,5092025 | Amount on Record Sep 2004 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
4 bd · 2.5 ba · 2,324 sqft · 0.435 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,2192025 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
3 bd · 2.5 ba · 2,242 sqft · 0.285 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $648,500Nov 2013 | $10,0432025 | Amount on Record Apr 1999 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4 bd · 3.5 ba · 2,558 sqft · 0.337 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $650,000Mar 2014 | $10,9492025 | Amount on Record Jun 2012 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jul 2026 |
4 bd · 2.5 ba · 2,324 sqft · 0.277 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Oct 1998 | $6,0542025 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk to Homes | Moderate this street's cells rank at the 52nd percentile of exposed land nationally · 31st in California |
|---|---|
| Wildfire Likelihood | Moderate — about 1 in 820 per year |
| Exposure | Indirect 0 of 2 cells directly exposed · 2 adjoin burnable vegetation |