Contra Costa County property records for 18 addresses on Bonanza St, Walnut Creek, CA · Last verified October 2026
| Properties | 32 |
|---|---|
| Median Sale Price | $1,350,000 |
| Deeds and Mortgages on File | 52 |
| Median Price per Sqft | $1,061 |
| Owner Occupied | 31% |
| Median Annual Tax Bill | $15,121 |
| Median Year Built | 2016 |
| Median Ownership Tenure | 8 years |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
5,586 sqft · built 1927 · 0.12 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,600,000Oct 2023 | $73,9852025 | Owner on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
2,731 sqft · built 1900 · 0.1 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,900,000Sep 2023 | $45,7902025 | Amount on Record Dec 2022 | Owner on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
7,815 sqft · built 1946 · 0.256 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,445,000Sep 1990 | $82,2312025 | Owner on Record | AssessorUpdated Jul 2026 |
2,641 sqft · built 1951 · 0.166 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,825,000Jul 2025 | $42,9002025 | Amount on Record Mar 2015 | Owner on Record | AssessorUpdated Oct 2026 |
27,177 sqft · built 1967 · 0.304 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $75,000May 1996 | $28,3572025 | Owner on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,716 sqft · built 1923 · 0.155 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,350,000Mar 2021 | $18,6892025 | Owner on Record | Assessor + 1 DocumentUpdated Jul 2026 |
4.5 ba · 1,628 sqft · built 1980 · 0.109 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Feb 2025 | $9,8102025 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
4,274 sqft · built 1960 · 0.259 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,475,000Nov 2016 | $36,1842025 | —Jun 2007 | Owner on Record | Assessor + 1 DocumentUpdated Jul 2026 |
10.5 ba · 3,269 sqft · built 1952 · 0.278 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $700,000Jun 1990 | $14,9612025 | Owner on Record | Assessor + 1 DocumentUpdated Jul 2026 |
13.5 ba · 9,474 sqft · built 1981 · 0.325 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,250,000Oct 2016 | $67,9612025 | Amount on Record Mar 2013 | Owner on Record | Assessor + 2 DocumentsUpdated Oct 2026 |
974 sqft · built 1925 · 0.087 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,200,000Feb 2022 | $15,1212025 | —Sep 2015 | 2 Owners on Record | Assessor + 3 DocumentsUpdated Aug 2026 |
1,038 sqft · built 1928 · 0.087 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,9462025 | —May 2013 | 2 Owners on Record | Assessor + 1 DocumentUpdated Oct 2026 |
1,866 sqft · built 1925 · 0.157 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,140,000Sep 2018 | $16,2962025 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Oct 2026 |
922 sqft · built 1925 · 0.114 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,050,000Sep 2018 | $13,9132025 | —Mar 1999 | Owner on Record | Assessor + 1 DocumentUpdated Jul 2026 |
35,270 sqft · built 2003 · 0.617 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Mar 2008 | $128,3722025 | Amount on Record Apr 2000 | Owner on Record | Assessor + 4 DocumentsUpdated Aug 2026 |
1,280 sqft · built 1926 · 0.113 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,5132025 | 2 Owners on Record | AssessorUpdated Jul 2026 |
22,471 sqft · built 2016 · 0.252 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Owner on Record | Assessor + 8 DocumentsUpdated Oct 2026 |
15 units · Built 2016 · 1,046 sq ft
| Last Sale | Median Tax Bill | Median Sale | ||
|---|---|---|---|---|
| $1,099,000May 2023 | $13,7072025 | $1,092,00015 units |