If you have looked at do I need planning permission (external link) but are still confused you can apply for a lawful development certificate.
When you are ready to submit a planning application you can do this online through the Planning Portal (external link).
Before you apply
Take advantage of our pre-application advice service so you can get 'in-principle' feedback before you submit a planning application. This helps you to avoid delays and submit a successful proposal.
Using the Planning Portal
Here's what you will need to do:
Getting help with the Planning Portal
Unfortunately the council can't help you use the Planning Portal system. If you have difficulties when using the portal: