The external links below provide more information about the planning system.
- Planning Portal
- Land Registry
- Guide for householders
- A guide for advertisers
- Architects Registration Board - Online register of architects
- The Royal Institute of British Architects - Online directory of architects
- The Royal Town Planning Institute - Online directory of planning consultants
- Hertfordshire County Council - Highways
- Hertfordshire County Council - Planning
- Planning Inspectorate - Planning Appeals
- Planning Appeals Casework Service - Planning Appeals
- Planning Portal - Building Regulations
- Planning Portal - Greener Homes & Micro-generation
