| Business | Phone |
| Bay Area Security Inc 4890 Horner St, Union City 94587 | (510) 441-9009 |
| C & C Security Patrol 1684 Decoto Rd # 161, Union City 94587 | (510) 471-1540 |
| Combase Security Inc 33476 Alvarado Niles Rd # A6, Union City 94587 | (510) 429-4747 |
| General Protection Svc 30846 Watkins St, Union City 94587 | (510) 489-4110 |