| Business | Phone |
| Ghilotti Construction Co 2301 Kerner Blvd, San Rafael 94901 | (415) 256-1525 |
| Maggiora & Ghilotti Inc 555 Du Bois St, San Rafael 94901 | (415) 459-8640 |
| Sunshine Construction 4136 Redwood Hwy # 13, San Rafael 94903 | (415) 479-5566 |
| Degnan Millsap & Assoc Inc 2406 Kerner Blvd, San Rafael 94901 | (415) 453-2031 |
| Engineering Design Tools San Rafael 94901 | (415) 459-1937 |
| J K Merz General & Engineering 110 Belvedere St # 215, San Rafael 94901 | (415) 456-3773 |
| Mactec Engineering 4040 Civic Center Dr, San Rafael 94903 | (415) 492-2855 |