Since the international terminal's original completion, it has undergone two large expansions. One such expansion is underway and will stretch over twenty years (2005–25). This will include an additional high-rise office block, the construction of a multi-level car park, the expansion of both international and domestic terminals. These expansions—and other plans and policies by Macquarie Bank for airport operations—are seen as controversial, as they are performed without the legal oversight of local councils, which usually act as the local planning authority for such developments. As of April 2006, some of the proposed development has been scaled back.