| Business | Phone |
| Carnarvon Sand & Gravel 205 E 1st St, Wall Lake 51466 | (712) 664-2511 |
| Gary's Backhoe & Trenching Svc 109 W 2nd St, Wall Lake 51466 | (712) 668-2238 |
| Jeff's Backhoe Svc 303 E 5th St, Wall Lake 51466 | (712) 664-2713 |
| King Construction 505 Melrose St, Wall Lake 51466 | (712) 668-2300 |
| Schmitt Construction Co 3766 Otter Ave, Wall Lake 51466 | (712) 664-2419 |