The Council of the City of Sydney v Nianios Mathew Hall Pty Limited v Nianios

The Council of the City of Sydney (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 building approvals granted to Nianios Mathew Hall Pty Limited (the Developer). The Developer, in turn, cross-appealed against aspects of the Supreme Court's judgment. The dispute centred on whether the Council had acted lawfully in granting development consent for a mixed-use building, and whether the Developer had a right to proceed with construction based on those approvals.

The primary legal issues before the Court of Appeal were whether the Council had properly exercised its discretion under the relevant planning legislation when granting development consent, and whether the Developer had acquired a vested right to proceed with the development notwithstanding subsequent changes in planning controls. Specifically, the Court had to consider the interpretation of provisions relating to the notification and advertising of development applications, and the effect of a "stop notice" issued by the Council.

The Court of Appeal, in its reasoning, examined the principles of administrative law governing the exercise of discretionary powers by local councils. It held that the Council had failed to comply with mandatory procedural requirements concerning public notification and advertising of the development application, rendering the initial consent invalid. The Court further determined that the Developer had not acquired a vested right to proceed with the development because the consent was fundamentally flawed from its inception. The Court also addressed the validity and effect of the "stop notice" in light of the invalid consent.

The Court of Appeal allowed the Council's appeal, set aside the Supreme Court's orders, and dismissed the Developer's cross-appeal. The Court declared that the development consent granted by the Council was invalid and of no effect.