| Business | Phone |
| Brick's Bodyguard & Security San Leandro 94577 | (510) 352-6135 |
| International Investigation 2040 Williams St, San Leandro 94577 | (510) 614-9245 |
| Ipi Corp San Leandro 94578 | (510) 278-2665 |
| Royal Investigation & Patrol 2950 Merced St # 108, San Leandro 94577 | (510) 352-6800 |
| Security Six Training 3001 Davis St, San Leandro 94577 | (925) 443-6676 |
| West Gate Security 1933 Davis St # 200, San Leandro 94577 | (510) 729-0104 |