| Business | Phone |
| 3-D Engineering Corp 11305 Rancho Bernardo Rd # 104, San Diego 92127 | (858) 618-5852 |
| 4 Ward Design 9985 Businesspark Ave # A, San Diego 92131 | (858) 578-0307 |
| Astorga Design 3742 Crete St, San Diego 92117 | (858) 483-9370 |
| Concept Technology Innovations San Diego 92111 | (858) 292-4255 |
| Direct Engineering Solutions 4760 Murphy Canyon Rd, San Diego 92123 | (858) 292-7894 |
| Energy Consulting Group 8015 Balboa Ave, San Diego 92111 | (858) 268-0660 |
| Titan Corp 1550 Hotel Cir N, San Diego 92108 | (619) 718-9600 |
| S C Engineers Inc 10815 Rancho Bernardo Rd # 340, San Diego 92127 | (858) 946-0333 |
| Salehi & Salehi Inc 8360 Clairemont Mesa Blvd #111, San Diego 92111 | (858) 277-5551 |
| Rpm & Predictive Engineering 1960 Bandolier Ln, San Diego 92154 | (619) 428-1242 |
| Dec Engineers 9466 Black Mountain Rd # 230, San Diego 92126 | (858) 578-3270 |
| Nova Dyne Engineering 6349 Nancy Ridge Dr, San Diego 92121 | (858) 554-1886 |
| O'Hara Consulting Svc 16885 W Bernardo Dr, San Diego 92127 | (858) 676-3423 |
| Fashandi & Assoc Engineering 8665 Miralani Dr # 210, San Diego 92126 | (858) 277-0505 |
| Miller Hugo Searle Consulting 4133 Caflur Ave, San Diego 92117 | (858) 483-9655 |
| Frechtel Story Inc Mechanical San Diego 92115 | (530) 692-2866 |
| Mc Parlane & Assoc 4919 Viewridge Ave # C, San Diego 92123 | (858) 277-9721 |
| Merrick & Assoc 9606 Tierra Grande St # 206, San Diego 92126 | (858) 549-9980 |
| Gem Engineering Inc 17065 Camino San Bernardo, San Diego 92127 | (858) 753-1000 |
| Lsw Engineers 5560 Ruffin Rd # 1, San Diego 92123 | (858) 268-3224 |
| Heininger Enterprises Inc 3970 Sorrento Valley Blvd # G, San Diego 92121 | (858) 554-1140 |
| Hill Engineering 6349 Nancy Ridge Dr # A, San Diego 92121 | (858) 552-1140 |
| Horn Engineering 6790 Top Gun St, San Diego 92121 | (858) 455-1121 |
| Hvac Design Group 15219 Avenida Rorras, San Diego 92128 | (858) 586-1000 |
| Innovative Design Engineering 8265 Lino Ct, San Diego 92129 | (858) 538-9610 |
| Ioos Llc 9380 Waples St, San Diego 92121 | (858) 453-7820 |
| Leading Edge Consulting 6650 Flanders Dr # J, San Diego 92121 | (858) 450-0205 |
| Kramer Engineering Svc 4901 Morena Blvd, San Diego 92117 | (858) 274-9860 |
| Titan Corp 3394 Carmel Mountain Rd, San Diego 92121 | (858) 720-4000 |