| Business | Phone |
| Aztek Consulting Engineers 9245 Dowdy Dr # 215, San Diego 92126 | (858) 547-7594 |
| Blackipo 6125 Imperial Ave, San Diego 92114 | (619) 527-1668 |
| Bse Engineering Inc 9620 Chesapeake Dr # 108, San Diego 92123 | (858) 279-2000 |
| C & G Engineering Inc 2970 5th Ave # 400, San Diego 92103 | (619) 398-3479 |
| Derksen Design Inc 650 Robinson Ave, San Diego 92103 | (760) 630-1608 |
| Eaton Electrical 9610 Ridgehaven Ct, San Diego 92123 | (858) 514-2400 |
| Engineering Partners Inc 7670 Opportunity Rd # 165, San Diego 92111 | (858) 541-0442 |
| Darlington Inc 591 Camino De La Reina # 510, San Diego 92108 | (619) 296-6900 |
| A R Devenyns & Assoc 2840 Adams Ave # 310, San Diego 92116 | (619) 284-0749 |
| Alion Science & Technology 10875 Rancho Bernardo Rd # 107, San Diego 92127 | (858) 592-0252 |
| Semenza Engineering Inc 11526 Sorrento Valley Rd # H, San Diego 92121 | (858) 792-8581 |
| Quorum 9330 Scranton Rd # 450, San Diego 92121 | (858) 546-0895 |
| Polytechnica 12041 Sabre Springs Pkwy # 344, San Diego 92128 | (858) 748-1080 |
| Ocean Pacific Electrical Dsgn 3356 Hancock St # E, San Diego 92110 | (619) 297-5848 |
| Network Security Electronics 3707 N Harbor Dr, San Diego 92101 | (619) 298-7392 |
| Murphy 6302 Riverdale St, San Diego 92120 | (619) 516-5102 |
| Michael Wall Engineering Inc 1341 India St, San Diego 92101 | (619) 231-0600 |
| Lopez Engineering 2321 Morena Blvd # G, San Diego 92110 | (619) 275-5658 |
| Gs & Assoc 1835 Sunset Cliffs Blvd # 203, San Diego 92107 | (619) 523-6342 |
| Jim Rad Design 3266 1/2 Rosecrans, San Diego 92110 | (619) 523-8894 |
| Kanrad Engineering Inc 9750 Miramar Rd # 180, San Diego 92126 | (858) 547-1100 |