The Department of Planning and Environment is home to individual agencies, offices, entities and business units including:
- Aboriginal Housing Office
- Cemeteries and Crematoria NSW
- Crown Lands
- Environment and Heritage
- Environment Protection Authority (EPA)
- Government Architect NSW
- Greater Cities Commission
- Hunter and Central Coast Development Corporation
- Land and Housing Corporation
- National Parks and Wildlife Service
- Natural Resources Access Regulator (NRAR)
- Office of Local Government
- Planning
- Planning Portal
- Property and Development NSW
- Sydney Olympic Park Authority
- Valuation NSW
- Water
- Water Infrastructure
- Western Parkland City Authority