| Business | Phone |
| Atwell Investigators 1316 Helix View Dr, El Cajon 92020 | (619) 440-2827 |
| Cal Flores Investigations Po Box 21158, El Cajon 92021 | (619) 440-7248 |
| East County Investigations 256 Witherspoon Way # L, El Cajon 92020 | (619) 433-9324 |
| Eucce & Assoc Investigations 1855 Lawndale Rd, El Cajon 92019 | (619) 441-8467 |
| Executive Protection Agency 1258 Broadway, El Cajon 92021 | (619) 442-5771 |
| Renkcub Recoveries 123 N Magnolia Ave, El Cajon 92020 | (619) 230-0008 |
| Ralph Middleton Investigations El Cajon 92020 | (619) 401-0339 |
| Mark Musgrove El Cajon 92020 | (619) 444-4883 |
| L A Investigations 275 E Douglas Ave # 107, El Cajon 92020 | (619) 447-5662 |