County government offices listed below are located at the One Justice Square building at 446 West Crogan Street (corner of West Crogan Street, Langley Drive, and Constitution Boulevard) in Lawrenceville. This building is located approximately one block from the Gwinnett Justice and Administration Center building.

• Administrative Offices (Department of Planning and Development)
• Building Inspections Section (Department of Planning and Development)
• Building Permits Section (Department of Planning and Development)
• Building Plan Review Section (Department of Planning and Development)
• Department of Community Services
• Development Inspections Section (Department of Planning and Development)
• Development Review Section (Department of Planning and Development)
• Development Services Section (Department of Planning and Development)
• Fire Plan Review Section (Department of Planning and Development)
• Licensing and Revenue (Suite 300)
• Planning Division (Department of Planning and Development)
• Stormwater Plan Review Section (Department of Planning and Development)
• Water and Sewer Plan Review Section (Department of Planning and Development)