| Business | Phone |
| Gradient Engineers 31344 Via Colinas, Westlake Village 91362 | (818) 707-8327 |
| Mangan Engineering 31320 Via Colinas, Westlake Village 91362 | (818) 735-0466 |
| Shape Change Technologies 2985 E Hillcrest Dr, Westlake Village 91362 | (805) 497-2549 |
| Yuzon & Assoc Structual Eng 5700 Corsa Ave # 102, Westlake Village 91362 | (818) 865-0977 |