| Business | Phone |
| Dave's Carpentry 424 S Main St, Gilman 60938 | (815) 265-4853 |
| Dawalt Construction 426 N Peoria St, Gilman 60938 | (815) 265-4313 |
| Duits Construction 161 N Central St, Gilman 60938 | (815) 265-4255 |
| General Material Corp 710 E 2nd St, Gilman 60938 | (815) 265-4881 |
| Gray's Material Svc 834 E 2nd St, Gilman 60938 | (815) 265-4322 |