Alameda County property records for 18 addresses on Gemini Dr, Union City, CA · Last verified August 2026
| Properties | 18 |
|---|---|
| Median Sale Price | $530,000 |
| Deeds and Mortgages on File | 19 |
| Median Price per Sqft | $484 |
| Owner Occupied | 83% |
| Median Annual Tax Bill | $6,632 |
| Median Year Built | 1978 |
| Median Ownership Tenure | 26 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
4 bd · 2 ba · 1,588 sqft · 0.125 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $938,000Aug 2019 | $13,8822025 | —May 2019 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
1,095 sqft · Built 1978 · 0.125 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $222,000Apr 1999 | $5,2392025 | —Sep 2017 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
4 bd · 2 ba · 1,588 sqft · 0.124 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $365,000Jul 2011 | $6,6332025 | Amount on Record Sep 2005 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2025 |
3 bd · 2 ba · 1,180 sqft · 0.122 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $345,000Feb 2013 | $8,3952025 | —Feb 2013 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,588 sqft · Built 1978 · 0.127 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,2102025 | —May 2007 | 2 Names on Record | AssessorUpdated Aug 2026 |
1,180 sqft · Built 1978 · 0.128 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $225,000Mar 1998 | $5,3792025 | —Mar 1998 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
1,095 sqft · Built 1978 · 0.128 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $310,000May 2000 | $6,8602025 | —Mar 2015 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
4 bd · 3 ba · 2,638 sqft · 0.125 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,2072025 | —Jun 2021 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
3 bd · 2 ba · 1,180 sqft · 0.131 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $775,000Jan 2020 | $11,5442025 | —May 2016 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Oct 2025 |
1,351 sqft · Built 1978 · 0.144 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,3202025 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 2 ba · 1,095 sqft · 0.144 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $530,000Nov 2004 | $10,1702025 | —Dec 2004 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Oct 2025 |
4 bd · 2 ba · 1,324 sqft · 0.135 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $360,000May 2000 | $8,2332024 | Amount on Record — | 2 Names on Record Owner Occupied | Assessor + 4 DocumentsUpdated Apr 2026 |
3 bd · 1 ba · 1,095 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $43,500Apr 1998 | $4,9472025 | 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 2 ba · 1,180 sqft · 0.143 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $171,500Jan 1989 | $4,8992025 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
4 bd · 2 ba · 1,588 sqft · 0.126 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,9212025 | —May 2017 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
3 bd · 2 ba · 1,095 sqft · 0.139 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $868,000Feb 2021 | $12,7932025 | —Sep 2011 | 2 Names on Record | Assessor + 2 DocumentsUpdated Oct 2025 |
4 bd · 3 ba · 1,965 sqft · 0.137 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $203,000Jul 1990 | $6,6322025 | —Jun 2008 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
3 bd · 2 ba · 1,180 sqft · 0.121 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,2232025 | 1 Name on Record | AssessorUpdated Aug 2026 |