A notice by a local planning authority (see town and country planning) that requires certain steps to be taken within a specified time to remedy an alleged breach of planning control. An example of such a breach would occur if development was carried out without planning permission or contrary to conditions attached to planning permission. A local planning authority that has notice of a breach of planning control has, however, a discretion as to whether to enforce against that breach. Appeal against the notice may be made to the Secretary of State on various grounds, including the ground that the development is one for which planning permission ought to be granted. See also stop notice.