| Business | Phone |
| Martinelli Investigations 125 1/2 N Perry St, Lawrenceville 30045 | (770) 236-9538 |
| Huhn & Assoc 1255 Lakes Pkwy 380, Lawrenceville 30043 | (770) 339-2035 |
| Gold Star Investigative Svc Lawrenceville 30043 | (770) 234-8984 |
| A Discreet Investigations 295 Maltbie St, Lawrenceville 30045 | (770) 962-8883 |
| Prestige Investigations Po Box 1893, Lawrenceville 30046 | (770) 963-8452 |