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Planning Act 2023
407Development previously exempt—non-use
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407 Development previously exempt—non-use (a) a development, other than a development that is a use, is exempt from requiring development approval under a regulation; and (b) a person undertakes, or begins, the development; and
(c) after the person undertakes or begins the development, the development stops being exempt because of an amendment of this Act. (2) The development is lawful despite any other provision of this Act.