| Business | Phone |
| Li & Assoc 77 Rolling Oaks Dr # 203, Thousand Oaks 91361 | (805) 495-3432 |
| Liston & Assoc Engineering 290 Conejo Ridge Ave # 102, Thousand Oaks 91361 | (805) 497-1244 |
| Mike Surprenant & Assoc 1754 Orinda Ct, Thousand Oaks 91362 | (805) 492-8258 |
| Parker Resnick Structural Engr 187 E Wilbur Rd # 10, Thousand Oaks 91360 | (805) 373-7071 |