Background
Rujun Jin and Yinzhen Jiang engaged Chunying Yu and Gang Ge in connection with plans to redevelop the plaintiffs’ Strathfield property. A standard-form residential building contract identified GYG (NSW) Pty Ltd as builder and stated a $3.5 million price, but its schedules did not identify the plans, specifications, or detailed scope of work. The plaintiffs alleged that they paid Ms Yu $100,000 for plans and preparation of the contract; although their evidence of payment was uncontested at the hearing, the defendants had denied it in their defence, and the Court left that factual issue unresolved.
Separately, Mr Jin had lent Ms Yu and Mr Ge $300,000 under a written loan agreement secured by an equitable charge over Mr Ge’s Collaroy property. The parties later orally agreed to set the loan repayment off against amounts purportedly payable under the building contract, after which Mr Jin withdrew his caveat. The plaintiffs also paid $770,000 toward the purported GYG contract. After limited construction work, the project was purportedly transferred to Advantaged Buildings (NSW) Pty Ltd, and the plaintiffs paid a further $272,500. The expedited hearing concerned the GYG contract, the set-off arrangement, and enforcement of the loan; damages and restitution claims were deferred.
The Court’s Holding
Parker J held that the GYG building contract was void for uncertainty because it did not identify the work GYG was promising to perform. Its general reference to constructing a two-storey house was insufficient, no plans were identified, and the preliminary plans then available were incomplete and subject to change. Because the contract never had legal effect, there was no contractual liability against which the loan debt could be set off, so the oral set-off agreement was also of no legal effect. The Court therefore did not need to grant relief under s 237 of the Australian Consumer Law.
The loan agreement remained enforceable. The Court entered judgment for Mr Jin in the amount of $368,264.39, declared that the Collaroy property was equitably charged under the agreement, and ordered Ms Yu and Mr Ge to grant Mr Jin an irrevocable power of attorney enabling him to receive mortgagee-sale proceeds and, if applicable, sell the property subject to prior encumbrances. The Court did not finally determine restitution: any recovery of the $770,000 would be subject to counter-restitution for the value of work performed. It joined Advantaged so that claims concerning the later contract and the $272,500 payment could proceed, and referred the papers concerning the large cash transactions to the Commissioner of Taxation for consideration of whether an investigation was warranted.
Key Takeaways
- A building contract may be void for uncertainty when it does not identify the plans, specifications, or other sufficiently definite scope of work.
- A set-off cannot discharge a valid loan debt when the supposed countervailing obligation arises under a contract that never had legal effect.
- Restitution following a void building contract may require an allowance for the cost or value of work actually performed.
Why It Matters
The decision underscores that stating a project type and total price does not necessarily create an enforceable building contract. The promised work must be objectively identifiable, particularly where drawings remain preliminary and contractual schedules are blank.
It also illustrates the distinction between declaring an agreement legally ineffective and resolving the financial consequences. Although the invalid contract could not support the set-off, repayment claims remained for later determination because the builder or its successor might be entitled to counter-restitution for benefits conferred.