“I have recently moved into a three-bedroom house which has had a loft room constructed. Building Regulations Consent was not obtained before doing this work though we are informed that the works conform to the required standards. How do I go about applying for Building Regulations Consent in retrospect? I know that planning permission was not required.
You will need to contact your local authority Building Control office and apply for a Regularisation Certification for this ‘unauthorised building work’. This could be very disruptive as some of the covered building work may need to be exposed, e.g. to verify the size of a steel beam or the spacing and size of floor joists.”

Category: General