| Business | Phone |
| Contra Costa Alcohol Programs 2020 N Broadway # 101, Walnut Creek 94596 | (925) 313-1075 |
| Contra Costa County Courts 640 Ygnacio Valley Rd, Walnut Creek 94596 | (925) 646-6579 |
| Contra Costa County Human Rltn 2020 N Broadway # 203a, Walnut Creek 94596 | (925) 646-6160 |