Alameda County property records for 19 addresses on Sapphire St, Castro Valley, CA · Last verified October 2026
| Properties | 19 |
|---|---|
| Median Sale Price | $915,000 |
| Deeds and Mortgages on File | 37 |
| Median Price per Sqft | $741 |
| Owner Occupied | 74% |
| Median Annual Tax Bill | $7,306 |
| Median Year Built | 1950 |
| Median Ownership Tenure | 6 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
5 bd · 1 ba · 1,276 sqft · built 1949 · 0.116 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jan 2025 | $9,3902025 | —Nov 2020 | Owner on Record | Assessor + 1 DocumentUpdated Oct 2026 |
4 bd · 2 ba · 1,596 sqft · built 1949 · 0.14 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $982,000Jun 2026 | $1,9102025 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2026 |
4 bd · 2 ba · 1,871 sqft · built 1949 · 0.159 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $130,000Apr 1997 | $4,8072025 | —Apr 1997 | Owner on Record Owner Occupied | Assessor + 3 DocumentsUpdated Sep 2026 |
3 bd · 2 ba · 1,060 sqft · built 1950 · 0.139 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $930,000Jul 2023 | $11,9802025 | Amount on Record Jun 2005 | 2 Owners on Record Owner Occupied | Assessor + 5 DocumentsUpdated Oct 2026 |
4 bd · 2 ba · 1,856 sqft · built 1949 · 0.162 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,6592025 | —Jan 1998 | Owner on Record | AssessorUpdated Aug 2026 |
3 bd · 2 ba · 1,540 sqft · built 1950 · 0.149 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $915,000Jun 2020 | $12,5942025 | Amount on Record Oct 2016 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2026 |
3 bd · 2 ba · 1,684 sqft · built 1950 · 0.144 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $845,000Jan 2020 | $11,7742025 | —May 2018 | Owner on Record Owner Occupied | Assessor + 5 DocumentsUpdated Aug 2026 |
3 bd · 1 ba · 1,060 sqft · built 1950 · 0.146 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $766,000Jun 2018 | $11,0712025 | Amount on Record Oct 2005 | 2 Owners on Record Owner Occupied | Assessor + 4 DocumentsUpdated Oct 2026 |
3 bd · 2 ba · 1,260 sqft · built 1950 · 0.146 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $350,000Nov 2001 | $7,3062025 | —Feb 2015 | Owner on Record Owner Occupied | AssessorUpdated Oct 2026 |
3 bd · 1 ba · 1,060 sqft · built 1950 · 0.143 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $749,000Oct 2019 | $11,1182025 | Amount on Record Oct 1998 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Sep 2026 |
3 bd · 1 ba · 1,060 sqft · built 1950 · 0.148 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,6022025 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 2 ba · 1,267 sqft · built 1952 · 0.129 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,140,000Feb 2025 | $10,5452025 | Amount on Record Nov 2024 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2026 |
5 bd · 2.5 ba · 1,753 sqft · built 1952 · 0.128 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $157,000Dec 2020 | $12,5772025 | Amount on Record Mar 2019 | 2 Owners on Record Owner Occupied | Assessor + 5 DocumentsUpdated Oct 2026 |
3 bd · 2 ba · 1,106 sqft · built 1952 · 0.117 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $860,000Nov 2020 | $11,8532025 | Amount on Record Mar 2015 | Owner on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2026 |
3 bd · 1 ba · 1,106 sqft · built 1952 · 0.117 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $820,000Aug 2020 | $11,3422025 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2026 |
3 bd · 1 ba · 1,106 sqft · built 1952 · 0.117 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $19,500Dec 1996 | $4,3452025 | Amount on Record Feb 1994 | Owner on Record | AssessorUpdated Aug 2026 |
3 bd · 1 ba · 1,106 sqft · built 1952 · 0.117 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,0382025 | —Feb 2006 | Owner on Record | AssessorUpdated Aug 2026 |
3 bd · 1 ba · 1,141 sqft · built 1952 · 0.125 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Dec 1990 | $1,7012025 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 1 ba · 1,141 sqft · built 1952 · 0.128 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,4792025 | —Dec 2014 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Aug 2026 |