| Business | Phone |
| Great Lakes Bus Consulting Inc 26135 N Lake Shore Dr, Barrington 60010 | (847) 487-2410 |
| Magis Group 106 Brinker Rd, Barrington 60010 | (847) 756-4200 |
| Mullins Executive Svc 520 S Northwest Hwy, Barrington 60010 | (847) 382-2340 |
| Schurecht Development Group 22 E Dundee Rd 44, Barrington 60010 | (847) 381-7207 |
| Dealership Development 204 N Highway 59, Barrington 60010 | (847) 304-8716 |