| Business | Phone |
| Pacific Engineering & Design 5664 Cahuenga Blvd, North Hollywood 91601 | (818) 761-7250 |
| Southland Construction 10760 Burbank Blvd, North Hollywood 91601 | (818) 508-4134 |
| Proact Engineering Inc 13063 Strathern St, North Hollywood 91605 | (818) 994-8710 |
| Hill Contracting Group 11144 Weddington St, North Hollywood 91601 | (818) 980-0473 |