Browse planning permission guidance for house extension projects across Kent.
Select a local planning authority below to view permitted development limits, planning considerations and council planning guidance.
Planning permission guidance for house extension projects in Ashford.
Planning permission guidance for house extension projects in Canterbury.
Planning permission guidance for house extension projects in Dartford.
Planning permission guidance for house extension projects in Dover.
Planning permission guidance for house extension projects in Folkestone and Hythe.
Planning permission guidance for house extension projects in Gravesham.
Planning permission guidance for house extension projects in Maidstone.
Planning permission guidance for house extension projects in Medway.
Planning permission guidance for house extension projects in Sevenoaks.
Planning permission guidance for house extension projects in Swale.
Planning permission guidance for house extension projects in Thanet.
Planning permission guidance for house extension projects in Tonbridge and Malling.
Planning permission guidance for house extension projects in Tunbridge Wells.
Planning permission rules affecting house extension developments may vary depending on design, location and council planning policies.
National permitted development rules set limits on height, size and location of many types of home improvement projects.
Last updated March 2026