Planning advice for householder permitted development

Apply for a certificate of lawfulness

A certificate of lawfulness is a legal document confirming that your proposed or existing development does not require planning permission.

A certificate can:

  • provide legal certainty
  • help with property sales or disputes
  • support licence applications
  • offer protection against enforcement action

How to apply

You will need to submit:

  • a completed form
  • drawings
  • a fee

Apply for a certificate of lawfulness

View planning fees

Page last modified: 10 February 2026