| Business | Phone |
| Hanson Professional Svc 18400 Maple Creek Dr 300, Tinley Park 60477 | (708) 679-1395 |
| M Gingerich Gereaux & Assoc 18641 W West Creek Dr, Tinley Park 60477 | (708) 532-9883 |
| Testing Service Corp 8201 183rd St C, Tinley Park 60477 | (708) 429-2080 |
| Roof Consultants Inc 17221 Dooneen Ave, Tinley Park 60477 | (708) 342-1758 |
| Seeco Consultants Inc 7350 Duvan Dr, Tinley Park 60477 | (708) 429-1666 |
| Seeco Environmental Svc 7350 Duvan Dr, Tinley Park 60477 | (708) 429-1685 |
| Sinnott Engineering 6811 Hickory St 2e, Tinley Park 60477 | (708) 614-9720 |