| Business | Phone |
| Als Technologies 1135 S Nevada St, Oceanside 92054 | (760) 754-3700 |
| Schock Engineering Corp Po Box 1233, Oceanside 92051 | (760) 439-3505 |
| Reynolds Civil Engineering Inc 4055 Oceanside Blvd # D, Oceanside 92056 | (760) 941-6641 |
| R W Beck 4167 Avenida De La Plata, Oceanside 92056 | (760) 643-9617 |
| Ges 4832 Cardiff Bay Dr, Oceanside 92057 | (760) 722-0998 |