Permitted Development

How to find out if you need planning permission

Some types of minor building work and changes of use are classed as ‘permitted development’. This means that they can be carried out without needing formal planning permission. These include some small extensions, alterations to windows and changes to boundary treatments.

The regulations are complex. Many properties do not benefit from full permitted development rights. It is important to make sure you know what you can do before going ahead with any work.

Permitted Development Enquiry Service

If you are unsure whether you need planning permission, we can check your proposal and give you informal confirmation in writing.

An enquiry form is available for householders to use. For other types of property or advertisements please write to us enclosing as much supporting detail as possible. Please note that there is a fee of £65 for this service.

Certificate of Lawfulness

If you know that your proposal does not need planning permission and you would like formal confirmation, you can apply for a Certificate of Lawfulness.

In this case, you will receive a decision notice, which is a legal document. Your application will be recorded in the public register of planning applications.

This can be useful if you plan to sell your property and would like to be able to prove that alterations were lawful.

Further general guidance on permitted development is available on the planning portal website.