| Business | Phone |
| Kreth Inc 15673 Pioneer Volcano Rd, Volcano 95689 | (209) 296-7867 |
| Millar General Construction 19821 Ponderosa Dr, Volcano 95689 | (209) 296-4881 |
| Quality Builders Volcano 95689 | (209) 296-3746 |
| Rogers Construction Po Box 121, Volcano 95689 | (209) 296-7950 |
| Steve Thompson Construction 17250 Hale Rd, Volcano 95689 | (209) 296-7815 |