Alameda County property records for 19 addresses on Hallmark Ct, Castro Valley, CA · Last verified August 2026
| Properties | 19 |
|---|---|
| Median Sale Price | $920,000 |
| Deeds and Mortgages on File | 25 |
| Median Price per Sqft | $415 |
| Owner Occupied | 100% |
| Median Annual Tax Bill | $8,945 |
| Median Year Built | 1987 |
| Median Ownership Tenure | 17 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
5 bd · 3 ba · 2,830 sqft · 0.61 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,2242025 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
5 bd · 3 ba · 3,295 sqft · 1.09 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,0842025 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
5 bd · 3 ba · 3,124 sqft · 0.881 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $847,000Dec 1997 | $7,4282025 | —Jul 2003 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
4 bd · 2.5 ba · 2,235 sqft · 0.261 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $730,000Apr 2004 | $13,0332025 | —Apr 2004 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
5 bd · 3 ba · 2,830 sqft · 0.486 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,600,000Oct 2024 | $19,6672025 | Amount on Record Apr 2014 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jan 2026 |
4 bd · 3 ba · 2,098 sqft · 0.674 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jan 2016 | $14,2412025 | —May 2009 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
4 bd · 2.5 ba · 2,216 sqft · 0.438 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Sep 1986 | $5,7742025 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
5 bd · 3 ba · 2,969 sqft · 0.254 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $418,000Dec 1994 | $9,3752025 | —Oct 1998 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
4 bd · 2.5 ba · 2,216 sqft · 0.238 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,0872025 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
5 bd · 3 ba · 2,830 sqft · 0.227 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jul 1998 | $6,4532025 | —Aug 2013 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
5 bd · 3 ba · 2,830 sqft · 0.211 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,7342025 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
5 bd · 3 ba · 2,830 sqft · 0.25 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $802,000Sep 2002 | $14,4922025 | —Jan 2014 | 2 Names on Record Owner Occupied | AssessorUpdated Oct 2025 |
4 bd · 2.5 ba · 2,216 sqft · 0.206 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $920,000Nov 2016 | $3,0662025 | —Feb 2022 | 1 Name on Record Owner Occupied | Assessor + 5 DocumentsUpdated Aug 2026 |
5 bd · 3 ba · 2,830 sqft · 0.199 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $735,000Nov 2012 | $11,4662025 | —Mar 1998 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
4 bd · 2.5 ba · 2,262 sqft · 0.204 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,4402025 | —Feb 2005 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
4 bd · 3 ba · 2,216 sqft · 0.197 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $450,000Dec 1999 | $8,9452025 | —Apr 2015 | 1 Name on Record Owner Occupied | AssessorUpdated Oct 2025 |
4 bd · 3 ba · 2,313 sqft · 0.183 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $710,000Aug 2009 | $11,6632025 | —Nov 2018 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
4 bd · 3 ba · 2,262 sqft · 0.231 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,530,000Sep 2021 | $19,9452025 | —Sep 2006 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Oct 2025 |
4 bd · 2.5 ba · 2,216 sqft · 0.268 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,050,000May 2017 | $15,2482025 | —May 2017 | 1 Name on Record Owner Occupied | Assessor + 4 DocumentsUpdated Aug 2026 |