This guide explains planning permission rules affecting basement conversion developments in Ashford.
Most householder development follows national permitted development rules unless local restrictions apply.
Development must comply with national permitted development height limits.
Extensions must comply with national permitted development depth limits.
A Neighbourhood Plan covers a geographic area and can be taken forward by town and parish councils or 'neighbourhood forums'. A Neighbourhood Plan, if approved, becomes part of the statutory development plan for that area and will be used in determining planning applications. Several parishes in the borough have prepared their own Neighbourhood Plans which once 'made' form part of the Development Plan.
charge. Proof of disability will be required i.e. disability allowance, blue badge or Doctor’s note.
Materials should be similar in appearance to the existing house.
Check for any local constraints such as conservation areas, protected trees and listed buildings using our interactive map. These constraints (amongst others) may mean special restrictions will apply for you to consider.
Check for any local constraints such as conservation areas, protected trees and listed buildings using our interactive map. These constraints (amongst others) may mean special restrictions will apply for you to consider.
Last verified 2026-01
UK permitted development legislation allows many basement conversion projects without planning permission provided certain limits are followed.
However local planning authorities such as those covering Ashford may impose additional planning controls through conservation area policies or Article 4 directions.
Many basement conversion projects in Ashford may fall under permitted development rights if they remain within national planning limits.
Development must comply with national permitted development height limits.
A Neighbourhood Plan covers a geographic area and can be taken forward by town and parish councils or 'neighbourhood forums'. A Neighbourhood Plan, if approved, becomes part of the statutory development plan for that area and will be used in determining planning applications. Several parishes in the borough have prepared their own Neighbourhood Plans which once 'made' form part of the Development Plan.
Yes. Additional planning restrictions may apply in conservation areas or where Article 4 directions remove permitted development rights.
Planning applications for basement conversion projects in Ashford are handled by the local planning authority covering Ashford, Kent.
For official planning advice consult the council planning portal for your area or visit the UK Planning Portal.
This guide summarises planning rules affecting basement conversion developments in Ashford.
Planning regulations may change and additional local planning policies may apply. Always confirm planning requirements with your local planning authority before starting development.
Last updated March 2026