| Business | Phone |
| Regency Management Svc 1701 Broadmoor Dr 200, Champaign 61821 | (217) 359-7031 |
| Ashland Park Sales Office 3105 Nobel Dr, Champaign 61822 | (217) 356-4663 |
| Red Oak Development 1605 S State St, Champaign 61820 | (217) 355-2380 |
| Thompson Land Co 411 Clarendon 106, Champaign 61820 | (217) 359-0065 |
| Interstate Research Park Inc 3001 Research Rd F, Champaign 61822 | (217) 352-4088 |
| Prairieview Estates 1301 E Leverett Rd 31, Champaign 61822 | (217) 643-7903 |
| Robeson Crossing Inc 2902 Crossing Ct B, Champaign 61822 | (217) 355-5200 |