Mobile phone antennae erected on existing radio masts and complying with the requirements of the Local Government (Planning and Development) Regulations, 1997, are exempt from the need to obtain planning permission and, therefore, outside the planning control system. If any question arises as to what, in any particular case, is or is not exempted development, the question may be raised with the relevant local authority in the first instance and ultimately referred to and decided by An Bord Pleanála.
Queries other than planning matters can be raised with the Office of the Director of Telecommunications Regulation and the Departments of Public Enterprise and Health and Children.