| Business | Phone |
| Anderson Structural Engrng 25401 Cabot Rd # 211, Laguna Hills 92653 | (949) 470-2323 |
| Jaik Choi & Assoc 23177 La Cadena Dr # 101, Laguna Hills 92653 | (949) 951-2522 |
| Kna Consulting Engineers Inc 23282 Mill Creek Dr # 100, Laguna Hills 92653 | (949) 462-3200 |
| Sama Engineering Inc 23141 Verdugo Dr, Laguna Hills 92653 | (949) 421-1090 |
| Seneca Structural Engineering 23276 S Pointe Dr # 209, Laguna Hills 92653 | (949) 595-8182 |