| Business | Phone |
| Litz Construction Co 1465 Cherry Cir, Portola 96122 | (530) 832-5518 |
| C B Construction Portola 96122 | (530) 832-0800 |
| Chief Construction Po Box 575, Portola 96122 | (530) 832-5707 |
| John Hall Construction 820 Ellen Ave, Portola 96122 | (530) 832-1190 |
| Joy Contruction Co 1 E Magnolia Ave, Portola 96122 | (530) 832-1424 |
| Rappa Construction & Design Po Box 485, Portola 96122 | (530) 832-4338 |