| Business | Phone |
| Robert J Ruyle Architects 32 Fawn Oaks Dr, O Fallon 63366 | (636) 978-5679 |
| Midwest Design Group Llc O Fallon 63366 | (636) 561-8196 |
| D H Architectural Design 8 Mcgee Rd, O Fallon 63366 | (636) 240-4882 |
| Cure Design Group 188 Roxbury Dr, O Fallon 63366 | (636) 294-2343 |