| Business | Phone |
| Fagent Zucco Assoc 1212 4th St, Santa Rosa 95404 | (707) 522-8047 |
| Richard B Gould 164 Oak Island Dr, Santa Rosa 95409 | (415) 479-5682 |
| Johnson De Bois & Forrest 405 W College Ave # E, Santa Rosa 95401 | (707) 575-0911 |
| Kenneth Campbell Assoc 818 Mendocino Ave # 202, Santa Rosa 95401 | (707) 575-8614 |
| Kenneth Campbell Structural Santa Rosa 95409 | (707) 537-0515 |
| Kent Engineering 3608 Aaron Dr, Santa Rosa 95404 | (707) 526-7956 |
| Mkm & Assoc 441 College Ave, Santa Rosa 95401 | (707) 578-8185 |
| Structural Design Group 430 E St, Santa Rosa 95404 | (707) 284-3641 |
| Zfa Structural Engineers 1212 4th St # Z, Santa Rosa 95404 | (707) 526-0992 |