| Business | Phone |
| Brubeck & Mc Garrahan 2121 Bonar St, Berkeley 94702 | (510) 848-7101 |
| Clarick G Brown Investigations 37 Avis Rd, Berkeley 94707 | (510) 525-1690 |
| Ellis Invesitgations Berkeley 94707 | (510) 525-5170 |
| Investigative Group 1230 Shattuck Ave, Berkeley 94709 | (510) 883-9800 |
| Jem Investigations 1240 6th St # B, Berkeley 94710 | (510) 528-1482 |
| Tully Investigation 800 Jones St, Berkeley 94710 | (510) 655-9400 |
| Cathryn Yost 956 Creston Rd, Berkeley 94708 | (510) 524-2687 |