| Business | Phone |
| F E Engineering 523 W Garfield Ave, Glendale 91204 | (818) 242-1860 |
| R D Professional Engineering 141 S Jackson St, Glendale 91205 | (818) 716-5625 |
| Cps Engineering 820 Thompson Ave # 41, Glendale 91201 | (818) 240-2843 |
| Victory Bridge 215 N Kenwood St # 306, Glendale 91206 | (818) 468-6619 |