| Business | Phone |
| Bha Inc 5115 Avenida Encinas # L, Carlsbad 92008 | (760) 931-8700 |
| Dossey Engineering & Cnsltng 4103 La Portalada Dr, Carlsbad 92008 | (760) 729-7802 |
| Alliance Land Planning 5962 La Place Ct # 130, Carlsbad 92008 | (760) 431-9896 |
| Servin Engineering 2382 Camino Vida Roble # F, Carlsbad 92011 | (760) 931-1792 |
| Resource Development Corp 2410 Stromberg Cir, Carlsbad 92010 | (760) 942-1106 |
| Conway & Assoc Inc 2525 Pio Pico Dr, Carlsbad 92008 | (760) 753-1453 |
| Daniel Boyle Engineering Inc 5650 El Camino Real # 155, Carlsbad 92008 | (760) 433-8710 |
| O'Day Consultants 2710 Loker Ave W # 100, Carlsbad 92010 | (760) 931-7700 |
| Marc Anderson Inc 1233 Gold Flower Rd, Carlsbad 92011 | (760) 602-4200 |
| Lukoski Engineering Po Box 131614, Carlsbad 92013 | (760) 438-0270 |
| Gvp Consultants 3764 Cavern Pl, Carlsbad 92010 | (760) 720-0500 |