| Business | Phone |
| Donatello Excavation & Backhoe 18452 Cull Canyon Rd, Castro Valley 94552 | (510) 538-5438 |
| Michael's Tractor & Dump Truck 19091 Madison Ave, Castro Valley 94546 | (510) 886-8666 |
| Glenn Railsback & Sons Inc 4600 Ewing Rd, Castro Valley 94546 | (510) 538-3638 |