If development is carried out without planning permission then the LPA may take "enforcement action" to have the building removed, the land reinstated, or at least undertake the minimum measures required to remove the harm arising. Generally, a retrospective application for planning permission would be invited if there is a reasonable likelihood of it being permitted, and action taken if planning permission is refused or the development incapable of being made acceptable. Almost all planning permissions are granted conditionally and enforcement action can also be taken to secure compliance with the conditions imposed. Unauthorised development can be the subject of a "stop notice" if there is an urgent need to prevent further harm.