| Business | Phone |
| Community Dev Engineering 100 Santa Rosa Ave, Santa Rosa 95404 | (707) 543-3200 |
| Community Development Adm 100 Santa Rosa Ave, Santa Rosa 95404 | (707) 543-3222 |
| Santa Rosa Redevelopment 90 Santa Rosa Ave, Santa Rosa 95404 | (707) 543-3300 |
| Zoning & Land Use 300 Santa Rosa Ave, Santa Rosa 95404 | (707) 543-3223 |