Westpac Banking Corporation v Kurobe Holdings Pty Limited and Karovel Nominees Pty Ltd

The case involved a dispute between the Westpac Banking Corporation, acting as the lessor, and Kurobe Holdings Pty Limited and Karovel Nominees Pty Ltd, acting as the lessees, concerning the validity of an exercise of an option to renew a lease. The matter was heard in the Supreme Court of New South Wales. The primary issue was whether the lessees had validly exercised an option to renew the lease by serving the necessary documents on the lessor's agent. This involved determining whether the service was in accordance with the terms of the lease agreement, specifically if the nomination of the lessee's agent was valid and if silence or inaction could be considered a condition precedent.

The court examined whether the terms of the lease required the lessees to nominate their agent for service and if the nomination was effectively made. Additionally, it was necessary to determine if the lessor's silence could be construed as acquiescence or if it amounted to a condition precedent that was not satisfied. The court further considered whether an equitable estoppel could be established if the lessor's silence induced the lessees to believe the option would be exercised without further formalities. The court held that the silence of the lessor's agent could not be considered a condition precedent and that an equitable estoppel was applicable due to the lessor's silence and inaction, which induced the lessees to believe the option was exercised.

The court found in favour of the lessees, concluding that the option to renew the lease was validly exercised. The court determined that the lessor's silence, coupled with the lessees' reasonable belief that the option was exercised, established an equitable estoppel. The court held that the lessor was estopped from denying the validity of the option's exercise. Consequently, the court ordered that the lease be renewed as per the terms outlined in the option to renew.