| Business | Phone |
| Amherst Group 4804 Arlington Ave # A, Riverside 92504 | (951) 785-5777 |
| Archey's Investigations 11741 Sterling Ave # D, Riverside 92503 | (951) 785-9360 |
| Carl B Smith Investigations 3895 12th St, Riverside 92501 | (951) 682-9088 |
| Catch Po Box 1388, Riverside 92502 | (951) 774-3088 |
| Interstate Recovery Svc 1785 Container Cir, Riverside 92509 | (951) 275-9200 |
| J D Marshall Investigations 3992 Brockton Ave, Riverside 92501 | (951) 369-1035 |
| James N Berry & Assoc 3410 La Sierra Ave # F, Riverside 92503 | (951) 735-8822 |
| Advanced Covert Surveillance 3758 La Sierra Ave, Riverside 92505 | (951) 637-5777 |
| Biffle Investigations 231 E Alessandro Blvd # A340, Riverside 92508 | (951) 653-1744 |
| David H Bunch Investigations 7133 Magnolia Ave, Riverside 92504 | (951) 684-8872 |
| Electro Ketch Riverside 92501 | (951) 788-5727 |
| Frank Bailor Investigations Riverside 92503 | (951) 352-9324 |
| Gonzalez Exclusive Investigtns 4329 Main St # 9, Riverside 92501 | (951) 788-5677 |
| Guerrero Investigative Svc 7830 Golden Star Ave, Riverside 92506 | (951) 789-4554 |
| Hinkle & Assoc Investigations 4076 Brockton Ave, Riverside 92501 | (951) 680-9868 |
| Lis Investigation 12321 Magnolia Ave # G, Riverside 92503 | (951) 273-7690 |
| Mc Collin Investigation 3750 University Ave # 205, Riverside 92501 | (951) 682-9334 |
| Michael Whedon Investigations 3410 La Sierra Ave # F340, Riverside 92503 | (951) 352-2780 |
| Monahan Investigations 4255 Main St # 1, Riverside 92501 | (951) 782-9233 |
| Paul Chance Pvt Investigations 11741 Sterling Ave, Riverside 92503 | (951) 689-6008 |
| Triad Diversified Svc 4576 Jarvis St, Riverside 92506 | (951) 275-0230 |
| White Investigative Svc 3857 Rosewood Pl, Riverside 92506 | (951) 686-9600 |
| Wjm & Assoc 6956 Indiana Ave, Riverside 92506 | (951) 684-1044 |
| Preston Guillory Investigation 10850 Hole Ave # E, Riverside 92505 | (951) 352-2934 |
| Singleton Investigations 5053 Lamart Dr # 205, Riverside 92507 | (951) 779-1616 |
| Tom Crompton Investigative Svc 3895 12th St, Riverside 92501 | (951) 781-9028 |
| Rjn Investigations Po Box 549, Riverside 92502 | (951) 686-7638 |
| Rjn Investigations Po Box 55451, Riverside 92517 | (760) 781-1307 |
| Search Plus Po Box 70316, Riverside 92513 | (951) 352-5024 |
| Paul Chance Private Invstgtns Po Box 8565, Riverside 92515 | (951) 688-1090 |