| Business | Phone |
| Capitol Legal Investigations 102 Lincoln St, Roseville 95678 | (916) 784-3920 |
| Corpinsight Investigative 3017 Douglas Blvd, Roseville 95661 | (916) 784-8000 |
| Hardinvestigations 684 Astill Way, Roseville 95678 | (916) 789-0901 |
| Ron Bals Investigations 1911 Douglas Blvd # 85 Pmb 240, Roseville 95661 | (916) 791-6022 |
| Ross Associates 805 Douglas Blvd # 144, Roseville 95678 | (916) 788-2041 |