| Business | Phone |
| J Brent Hoerner Structural Eng Santa Clarita 91355 | (661) 284-1986 |
| Structural Engineering Cnsltnt 27200 Tourney Rd # 390, Santa Clarita 91355 | (661) 287-5800 |
| Amax Drafting Inc 23942 Lyons Ave, Santa Clarita 91321 | (661) 799-8000 |
| John A Martin & Assoc 23502 Lyons Ave, Santa Clarita 91321 | (661) 260-2646 |
| Mercado Lizandro Assoc 24881 San Fernando Rd, Santa Clarita 91321 | (661) 753-9295 |