| Business | Phone |
| William Boyd Investments 6170 Bethel Island Rd, Bethel Island 94511 | (925) 684-2000 |
| Delta Island Rl Est & Loan 6357 Bethel Island Rd, Bethel Island 94511 | (925) 684-2911 |
| Boyd Real Estate Inc. 6170 Bethel Island Road, Bethel Island 94511 | (925) 323-7602 |