The Council of the Shire of Hornsby v Gosper

The Council of the Shire of Hornsby (the Council) appealed to the New South Wales Court of Appeal against a decision of the Supreme Court of New South Wales concerning the validity of certain development consents granted by the Council. The dispute centred on whether the Council had properly exercised its powers under the relevant planning legislation when granting these consents, specifically in relation to conditions imposed on the development.

The primary legal issue before the Court of Appeal was whether the conditions attached to the development consents were so unreasonable or unrelated to the purpose of the planning legislation as to render the consents invalid. This involved an examination of the Council's statutory powers to impose conditions on development approvals and the principles of administrative law governing the exercise of such powers, including the concept of reasonableness and the requirement that conditions be for a proper planning purpose.

The Court of Appeal, applying established principles of administrative law, found that the conditions imposed by the Council were not so unreasonable as to be beyond its power. The Court reasoned that the conditions were related to the proper planning and development of the land in question and did not fetter the Council's discretion in an unlawful manner. The Court affirmed that planning authorities have a broad discretion in imposing conditions, provided those conditions are for a purpose authorised by the relevant legislation and are not so unreasonable that no reasonable body could have imposed them. The appeal was allowed, and the decision of the Supreme Court was set aside.