Land Use Planning and Regulation Services

Services and hours may have been affected due to Coronavirus. Please call for more information to verify.

This is the government office for the city of Diamond Bar. Services include election information, city information lines, building and occupancy inspections, permits, city maintenance and planning and zoning. Geographic restrictions apply for some services; business-related services are provided only for businesses located in Diamond Bar.

The city provides building permits, electrical permits, elevator permits, mechanical permits and plumbing permits for any contracted work done within city limits.

City maintenance includes graffiti removal, street maintenance, street construction/repair, street lighting maintenance and street cleaning.