| Business | Phone |
| Austin Rennie Design Const 26 Manitoba #A, Gravenhurst | (705) 646-0398 |
| Glen Doucette Construction 190 Watson Lane, Gravenhurst P1P 1P6 | (705) 687-7829 |
| Muskoka Lakes Construction 190 Tiffany Trail, Gravenhurst P1P 1A6 | (705) 687-8370 |
| South Muskoka Construction Rr 2 Stn Main, Gravenhurst P1P 1R2 | (705) 687-2468 |
| Timberland Carpentry 140 Progress Dr #1, Gravenhurst P1P 1X4 | (705) 687-3223 |
| William Taylor Construction 355 Fairview Dr, Gravenhurst P1P 1L2 | (705) 687-3622 |