| Business | Phone |
| Adams Consultant Engineer West 5876 Owens Ave, Carlsbad 92008 | (760) 476-1744 |
| Aest 6965 El Camino Real, Carlsbad 92009 | (760) 213-3795 |
| Precision Measurement 2792 Loker Ave W # 105, Carlsbad 92010 | (760) 579-0300 |
| Coastal Planning & Engineering Carlsbad 92008 | (760) 730-9151 |
| Pba Ltd 800 Grand Ave # A9, Carlsbad 92008 | (760) 729-5428 |
| J C Baldwin Construction Co 2469 Impala Dr, Carlsbad 92010 | (760) 438-9275 |