Carbone as Trustee for the S & N Carbone Family Trust v Mills

The appeal concerned an option to purchase land granted by the respondent, Mr Mills, to the appellants, Carbone as Trustee for the S & N Carbone Family Trust. The appellants failed to exercise the option within the stipulated period, and the central dispute revolved around whether Mr Mills was estopped from relying on the terms of the option agreement, specifically the expiry date and the requirement to pay outstanding interest. The matter was heard in the Court of Appeal of New South Wales.

The Court of Appeal was required to determine whether Mr Mills' conduct led the appellants into a misapprehension regarding the date the option lapsed, and if so, whether this estopped him from enforcing that expiry date. Additionally, the Court had to consider whether Mr Mills was estopped from relying on the appellants' failure to pay outstanding interest, a condition precedent to exercising the option.

The Court analysed the principles of equitable estoppel, particularly focusing on whether the respondent’s conduct had created an assumption in the appellants that the option would remain open beyond the specified date, or that the interest payment requirement would be waived or deferred. The Court found that the evidence did not establish that the respondent’s conduct had induced such an assumption, nor that the appellants had relied on any such assumption to their detriment. Consequently, the respondent was not estopped from enforcing the terms of the option agreement as written.

The Court of Appeal granted the applicants leave to appeal but ultimately dismissed the appeal, ordering the appellants to pay the respondent’s costs of the appeal and the application for leave to appeal.