| Business | Phone |
| 1 Stop Real Estate 100 W Locust St, Belvidere 61008 | (815) 544-9198 |
| Ability Realty 100 E Locust St, Belvidere 61008 | (815) 547-8768 |
| Advanced Concepts 227 Logan Ave, Belvidere 61008 | (815) 544-3200 |
| Advantage Realtors 1801 Kristine Dr, Belvidere 61008 | (815) 547-5199 |
| Belvidere Board Of Realtors 215 N State St, Belvidere 61008 | (815) 544-2719 |
| Gambino Realtors 923 Logan Ave, Belvidere 61008 | (815) 544-2226 |
| Century 21 1803 Kristine Dr, Belvidere 61008 | (815) 544-6677 |
| Century 21 2192 N State St, Belvidere 61008 | (815) 544-9459 |
| Don's Agency 427 E 8th St, Belvidere 61008 | (815) 547-8499 |
| Dickerson & Nieman Realtors 1255 Logan Ave, Belvidere 61008 | (815) 544-3530 |
| Coldwell Banker 1632 S State St, Belvidere 61008 | (815) 544-8800 |