| Business | Phone |
| Bar X Enterprises 1070 Horizon Dr, Fairfield 94533 | (707) 425-7445 |
| Bel Air 787 Glacier Way, Fairfield 94534 | (707) 864-1588 |
| Citation Northern 4604 Brava Pl, Fairfield 94534 | (707) 863-9235 |
| Enclos Corp 601 Texas St, Fairfield 94533 | (949) 218-5010 |
| Hupner Consulting 601 Walnut Dr, Fairfield 94534 | (530) 344-1747 |
| Mega Partnership Co 4505 Olive Ave, Fairfield 94533 | (707) 434-1245 |
| Mountain Cascade Inc 5239 Oakridge Dr, Fairfield 94534 | (707) 864-9960 |
| Terrestrial Development Corp 114 Del Norte Ct, Fairfield 94533 | (707) 435-9696 |