If you carry out building work without submitting an application for planning permission and permitted development does not apply, the local authority may ask you to submit a retrospective application to approve the work that has been completed.
With building control, you can obtain a regularisation certificate from a building control body for the work to be certified.
In both cases there are implications if a building, or works to a building, do not meet set standards. Find out in this section what happens if you do not comply with the requirements or do not obtain approval.
Retrospective planning permission
Read our guidance on retrospective planning applications and the process of approval and refusal.
read our guidance on retrospective building regulations approval and how to obtain a regularisation certificate.
What happens if you don't apply for or comply with the planning rules?
Find out what happens if you don’t apply for planning permission or breach the planning rules.
What happens if you don't comply with the building regulations
Find out what happens if you don’t apply for building regulations approval for your building work.