Alameda County property records for 19 addresses on Platinum St, Union City, CA · Last verified October 2026
| Properties | 19 |
|---|---|
| Median Sale Price | $1,060,000 |
| Deeds and Mortgages on File | 34 |
| Median Price per Sqft | $371 |
| Owner Occupied | 89% |
| Median Annual Tax Bill | $17,283 |
| Median Year Built | 2005 |
| Median Ownership Tenure | 15 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
3 bd · 2 ba · 2,323 sqft · built 2006 · 0.151 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $906,000May 2006 | $17,0992025 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2026 |
5 bd · 3 ba · 3,162 sqft · built 2006 · 0.147 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,398,000Jul 2019 | $20,6902025 | Amount on Record May 2011 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2026 |
5 bd · 3.5 ba · 3,570 sqft · built 2006 · 0.147 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,225,000Nov 2021 | $31,2832025 | Amount on Record Jul 2006 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
5 bd · 2.5 ba · 3,655 sqft · built 2005 · 0.15 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,161,000Apr 2006 | $21,5052025 | —Apr 2006 | 2 Owners on Record Owner Occupied | AssessorUpdated Oct 2026 |
3 bd · 2.5 ba · 3,162 sqft · built 2006 · 0.145 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $670,000Jul 2012 | $11,8952025 | Amount on Record Mar 2006 | 2 Owners on Record | Assessor + 3 DocumentsUpdated Oct 2026 |
6 bd · 3.5 ba · 3,570 sqft · built 2005 · 0.142 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,060,000Mar 2015 | $17,5602025 | Amount on Record Sep 2009 | Owner on Record | AssessorUpdated Oct 2026 |
3 bd · 2 ba · 2,323 sqft · built 2006 · 0.14 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $560,000Aug 2011 | $10,2712025 | Amount on Record Mar 2011 | Owner on Record Owner Occupied | AssessorUpdated Oct 2026 |
5 bd · 2.5 ba · 3,655 sqft · built 2006 · 0.141 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $627,000Dec 2011 | $11,3332025 | Amount on Record Mar 2006 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2026 |
5 bd · 3.5 ba · 3,569 sqft · built 2005 · 0.138 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,450,000Feb 2018 | $22,3052025 | Amount on Record Oct 2005 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2026 |
3 bd · 2 ba · 2,323 sqft · built 2005 · 0.138 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $322,500Aug 2007 | $16,1572025 | Amount on Record Sep 2005 | 2 Owners on Record Owner Occupied | AssessorUpdated Oct 2026 |
3 bd · 2 ba · 2,323 sqft · built 2005 · 0.17 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $848,000Oct 2005 | $16,0192025 | —Jun 2020 | Owner on Record Owner Occupied | Assessor + 5 DocumentsUpdated Oct 2026 |
5 bd · 3 ba · 3,162 sqft · built 2005 · 0.137 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,003,318Aug 2005 | $17,2832025 | —May 2015 | Owner on Record Owner Occupied | AssessorUpdated Oct 2026 |
5 bd · 2.5 ba · 3,655 sqft · built 2005 · 0.15 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,198,000May 2006 | $22,0552025 | Amount on Record Nov 2005 | Owner on Record Owner Occupied | Assessor + 4 DocumentsUpdated Oct 2026 |
5 bd · 2.5 ba · 3,655 sqft · built 2005 · 0.14 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $185,500Aug 2020 | $16,6022025 | Amount on Record Nov 2011 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2026 |
3 bd · 2.5 ba · 3,162 sqft · built 2005 · 0.156 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $630,000Nov 2022 | $20,7162025 | —Aug 2012 | Owner on Record Owner Occupied | Assessor + 4 DocumentsUpdated Oct 2026 |
4 bd · 2.5 ba · 3,306 sqft · built 2005 · 0.138 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $964,000Aug 2005 | $18,0122025 | —Aug 2005 | 2 Owners on Record Owner Occupied | AssessorUpdated Oct 2026 |
4 bd · 2.5 ba · 3,306 sqft · built 2005 · 0.138 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,213,000Oct 2005 | $22,3122025 | —Mar 2022 | Owner on Record Owner Occupied | Assessor + 3 DocumentsUpdated Sep 2026 |
3 bd · 2.5 ba · 2,472 sqft · built 2005 · 0.162 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $918,000Apr 2015 | $15,3182025 | Amount on Record Jan 2011 | Owner on Record Owner Occupied | Assessor + 5 DocumentsUpdated Oct 2026 |
5 bd · 2.5 ba · 3,840 sqft · built 2005 · 0.173 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $625,000Oct 2010 | $12,3962025 | Amount on Record Apr 2010 | Owner on Record Owner Occupied | AssessorUpdated Oct 2026 |