| Business | Phone |
| Architechnics Inc 510 Maine St 10, Quincy 62301 | (217) 222-0554 |
| Atock & Assoc Architects 307 N 36th St, Quincy 62301 | (217) 223-2357 |
| Geotechnics 616 N 24th St, Quincy 62301 | (217) 223-4456 |
| Kemner Inc 420 Maine St, Quincy 62301 | (217) 222-1053 |
| Mpm Design Group 137 N 2nd St, Quincy 62301 | (217) 222-0562 |
| Stock & Assoc Architects 307 N 36th St, Quincy 62301 | (217) 223-1795 |