| Business | Phone |
| Altman General Engineering 1557 Eugene Ct, Yuba City 95993 | (530) 671-1155 |
| California Engineering Co 1510 Poole Blvd # 102, Yuba City 95993 | (530) 751-0952 |
| Key & Assoc-Civil Engineers 1646 Poole Blvd, Yuba City 95993 | (530) 674-1565 |
| Kwest Engineering 3450 Industrial Dr # 1, Yuba City 95993 | (530) 671-1947 |
| Laughlin & Spence Civil Engnrs 1008 Live Oak Blvd, Yuba City 95991 | (530) 671-1008 |
| Milestone Engineering 1528 Poole Blvd, Yuba City 95993 | (530) 755-4700 |
| Robert Estrada Engineering 728 Plumas St # A, Yuba City 95991 | (530) 674-1681 |