Alameda County property records for 63 addresses on Gem Ave, Castro Valley, CA · Last verified August 2026
| Properties | 63 |
|---|---|
| Median Sale Price | $988,000 |
| Deeds and Mortgages on File | 108 |
| Median Price per Sqft | $699 |
| Owner Occupied | 86% |
| Median Annual Tax Bill | $7,107 |
| Median Year Built | 1949 |
| Median Ownership Tenure | 14 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
5 bd · 3 ba · 1,978 sqft · 0.185 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $455,000Feb 2014 | $8,9742025 | 1 Name on Record | AssessorUpdated Oct 2025 |
3 bd · 1 ba · 1,216 sqft · 0.136 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $144,000Oct 2025 | $4,3872025 | —Oct 2025 | 2 Names on Record Owner Occupied | Assessor + 4 DocumentsUpdated Aug 2026 |
2 bd · 1 ba · 888 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $185,000Jul 1998 | $4,2912025 | 2 Names on Record | AssessorUpdated Aug 2026 |
2 bd · 1 ba · 928 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $751,000Sep 2025 | $1,9942025 | 2 Names on Record | Assessor + 1 DocumentUpdated Aug 2026 |
3 bd · 1 ba · 1,080 sqft · 0.125 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,4572025 | —Apr 2018 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
3 bd · 2 ba · 1,788 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $575,000Aug 2017 | $10,6292025 | —Dec 1998 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2025 |
3 bd · 1 ba · 1,080 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $589,000Oct 2016 | $8,8502025 | —Oct 2012 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
5 bd · 3 ba · 1,968 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,8352025 | —Aug 2016 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
2 bd · 1 ba · 1,176 sqft · 0.18 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Apr 1987 | $3,5512025 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
2 bd · 1 ba · 1,144 sqft · 0.139 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $700,000May 2018 | $10,1852025 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
3 bd · 2 ba · 1,258 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $545,000Nov 2015 | $9,3122025 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2025 |
3 bd · 1 ba · 1,080 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $755,000Jul 2025 | $2,9682025 | —Oct 2010 | 1 Name on Record Owner Occupied | AssessorUpdated Oct 2025 |
3 bd · 2 ba · 1,268 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Apr 1987 | $3,8962025 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 1 ba · 1,080 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $590,000Jul 2017 | $11,9422025 | —Jul 2023 | 1 Name on Record | Assessor + 3 DocumentsUpdated Aug 2026 |
4 bd · 4 ba · 2,184 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $515,000Mar 2007 | $11,3022025 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
3 bd · 2 ba · 1,480 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $325,000Jun 2002 | $7,5762025 | —Apr 2003 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
4 bd · 1.5 ba · 1,378 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $186,000Apr 1997 | $4,3512025 | —Oct 2005 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
4 bd · 2 ba · 1,500 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $64,090Jul 1995 | $2,5242025 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
2 bd · 1 ba · 928 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $159,000Jul 1993 | $4,0922025 | —Apr 1999 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
3 bd · 2 ba · 1,240 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $575,000Jul 2006 | $10,4532025 | —Aug 2002 | 2 Names on Record Owner Occupied | AssessorUpdated Oct 2025 |
2 bd · 1 ba · 984 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $395,000Nov 2003 | $7,4132025 | 1 Name on Record Owner Occupied | AssessorUpdated Oct 2025 |
2 bd · 1 ba · 1,728 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $400,000Jun 2010 | $6,8792025 | Amount on Record Feb 2007 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
3 bd · 2 ba · 1,399 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $159,500Sep 1997 | $4,8562025 | —Sep 1997 | 1 Name on Record Owner Occupied | Assessor + 4 DocumentsUpdated Aug 2026 |
3 bd · 2 ba · 1,648 sqft · 0.137 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $800,000Apr 2019 | $11,3992025 | 1 Name on Record | Assessor + 4 DocumentsUpdated Oct 2025 |
4 bd · 2 ba · 1,912 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $94,000Sep 1983 | $4,2702025 | —Jun 2004 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
3 bd · 2 ba · 1,560 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $182,500Jan 1999 | $5,2812025 | —Jun 1998 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
4 bd · 2 ba · 1,752 sqft · 0.151 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jul 2000 | $3,3112025 | —Oct 1996 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
4 bd · 2 ba · 1,488 sqft · 0.115 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $393,000Jul 2011 | $6,6112025 | Amount on Record Nov 2010 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2025 |
3 bd · 2 ba · 1,412 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $535,000Sep 2014 | $8,3732025 | —Dec 2013 | 1 Name on Record Owner Occupied | AssessorUpdated Oct 2025 |
3 bd · 1 ba · 1,091 sqft · 0.119 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $158,000Nov 1995 | $3,8832025 | —Nov 1995 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 1 ba · 1,012 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $700,000Nov 2017 | $10,2672025 | 3 Names on Record Owner Occupied | Assessor + 4 DocumentsUpdated Oct 2025 |
3 bd · 2 ba · 1,476 sqft · 0.121 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $413,500Sep 2008 | $7,0692025 | —Oct 2017 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
2 bd · 1 ba · 827 sqft · 0.114 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $275,000Jun 2011 | $4,9442025 | —Aug 2013 | 3 Names on Record Owner Occupied | AssessorUpdated Oct 2025 |
2 bd · 1 ba · 1,012 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $988,000Aug 2021 | $13,1582025 | —Jan 2016 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2025 |
3 bd · 2 ba · 1,202 sqft · 0.121 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,060,000Jun 2021 | $12,2212025 | Amount on Record Oct 2019 | 2 Names on Record Owner Occupied | Assessor + 6 DocumentsUpdated Oct 2025 |
4 bd · 2 ba · 1,871 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $208,000Sep 1993 | $4,9582025 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
2 bd · 1 ba · 827 sqft · 0.118 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,6952025 | —Jul 1994 | 1 Name on Record | AssessorUpdated Aug 2026 |
3 bd · 1 ba · 1,510 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $999,000May 2026 | $10,8562025 | Amount on Record Apr 2018 | 1 Name on Record Owner Occupied | Assessor + 5 DocumentsUpdated Jul 2026 |
4 bd · 1 ba · 1,014 sqft · 0.118 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,000Mar 1994 | $8,2102025 | —Sep 2013 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
3 bd · 1 ba · 827 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $520,000Feb 2018 | $7,8512025 | Amount on Record Apr 2002 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
3 bd · 1 ba · 1,012 sqft · 0.123 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Mar 2005 | $1,6192025 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 2 ba · 1,344 sqft · 0.114 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $163,000Dec 1996 | $7,0852025 | 2 Names on Record Owner Occupied | AssessorUpdated Oct 2025 |
3 bd · 1 ba · 1,034 sqft · 0.125 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $380,000May 2010 | $6,5692025 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
3 bd · 1 ba · 827 sqft · 0.115 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,1852025 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
2 bd · 1 ba · 1,091 sqft · 0.119 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $175,000Jan 1990 | $4,5852025 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
4 bd · 2 ba · 1,269 sqft · 0.115 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,150,000Mar 2025 | $10,7862025 | Amount on Record Jul 2020 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2025 |
3 bd · 2 ba · 1,802 sqft · 0.119 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,100,000Nov 2021 | $13,1462025 | Amount on Record Aug 2000 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
6 bd · 3 ba · 2,020 sqft · 0.116 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $755,000Aug 2020 | $14,0972025 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2025 |
3 bd · 1 ba · 1,276 sqft · 0.119 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Nov 2007 | $2,9472025 | —Aug 2006 | 2 Names on Record | AssessorUpdated Aug 2026 |
3 bd · 1 ba · 827 sqft · 0.119 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $610,000Oct 2017 | $9,0592025 | —May 2020 | 2 Names on Record Owner Occupied | Assessor + 5 DocumentsUpdated Oct 2025 |
2 bd · 2 ba · 852 sqft · 0.119 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $735,000Oct 2022 | $9,4362025 | 1 Name on Record | Assessor + 7 DocumentsUpdated Oct 2025 |
3 bd · 1 ba · 1,312 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $770,000Jun 2019 | $10,6802024 | Amount on Record Nov 2010 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
3 bd · 1 ba · 1,276 sqft · 0.121 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,2072025 | 2 Names on Record Owner Occupied | AssessorUpdated Oct 2025 |
3 bd · 1 ba · 827 sqft · 0.116 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $305,000Jun 2012 | $5,3892025 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2025 |
3 bd · 1 ba · 1,071 sqft · 0.132 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $480,000Nov 2016 | $8,2322025 | —May 2013 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
3 bd · 1 ba · 1,060 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $53,000Feb 1999 | $2,9702025 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 1 ba · 1,431 sqft · 0.125 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $602,500Jan 2016 | $9,2852025 | Amount on Record Dec 2006 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2025 |
2 bd · 2 ba · 1,389 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $662,000Apr 2015 | $10,2572025 | Amount on Record Nov 2007 | 1 Name on Record | AssessorUpdated Oct 2025 |
7 bd · 4 ba · 2,561 sqft · 0.132 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jan 2026 | $13,4442025 | Amount on Record Jun 2006 | 3 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Feb 2026 |
3 bd · 2 ba · 1,273 sqft · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $670,000Mar 2017 | $9,9622025 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2025 |
3 bd · 1 ba · 1,071 sqft · 0.139 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $584,500Jun 2006 | $10,2942025 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2025 |
3 bd · 2 ba · 1,151 sqft · 0.162 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $425,000Sep 2012 | $7,1072025 | —Jan 2020 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jan 2026 |
4 bd · 3 ba · 2,363 sqft · 0.393 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,300,000May 2024 | $11,4452025 | Amount on Record Mar 2015 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2025 |