Marin County Community Development Agency 3501 Civic Center Dr, San Rafael, CA94903 The Community Development Agency joins together the county's planning, building and environmental health divisions. It…More works to protect Marin's natural and built environment and protect the public's health. It includes a sustainability team that works to develop policies and programs that will help make the county healthy, vibrant and sustainable. The planning element administers and enforces zoning and subdivision regulations in accordance with the Marin Countywide Plan. The building and safety division oversees state and county codes and ordinances to ensure buildings are safe for occupancy.