| Business | Phone |
| Engineering Group 1250 East Ave # 10, Chico 95926 | (530) 899-0409 |
| G B Star 20 Declaration Dr, Chico 95973 | (530) 893-0326 |
| Gilbert Engineering 70 Declaration Dr # 101, Chico 95973 | (530) 899-9503 |
| Lampe Engineering 3060 Thorntree Dr # 90, Chico 95973 | (530) 345-7402 |
| Northstar Engineering 20 Declaration Dr, Chico 95973 | (530) 893-1600 |
| Robertson & Dominick Inc 888 Manzanita Ct # A, Chico 95926 | (530) 894-3500 |
| Ausmus Engineering Po Box 5115, Chico 95927 | (530) 521-2648 |
| Bkm Civil Engineering 8 Claremont Cir, Chico 95926 | (530) 895-0470 |
| Caprealian Engineering 1743 Mulberry St, Chico 95928 | (530) 891-6886 |
| M Clarke Engineering 60 Declaration Dr # D, Chico 95973 | (530) 893-3444 |
| Rolls Anderson & Rolls Civil 115 Yellowstone Dr, Chico 95973 | (530) 895-1422 |
| Ausmus Engineering 3115 Johnny Ln, Chico 95973 | (530) 521-2648 |