| Business | Phone |
| Aztec Engineering Svc 14168 Poway Rd, Poway 92064 | (858) 748-9163 |
| Cherry Engineering 12721 Poway Rd, Poway 92064 | (858) 679-3410 |
| Erb Engineering Inc 12320 Stowe Dr # E, Poway 92064 | (858) 748-2130 |
| R P Engineers 13061 Poway Rd, Poway 92064 | (858) 486-0490 |
| Infrastructure Engineering 14271 Danielson St, Poway 92064 | (858) 451-6704 |