Under the Town and Country Planning Act 1990, a person may apply for a Certificate of Lawfulness where: there has been a breach of planning control relating to building, engineering, mining or other operations after 4 years from when they are substantially completed; there has been a breach of planning control consisting of the change of use of a building to a single dwelling house after 4 years from the date of the breach; or for any other breach of planning control, 10 years from the date of t