Ideal Polyurethane v GWH Building Pty Ltd

In the case of Ideal Polyurethane v GWH Building Pty Ltd, the plaintiff sought to recover economic losses due to defective concrete slabs in an industrial building. The defendants, GWH Building Pty Ltd and their retained civil engineer, were potentially liable under a design and construct contract. The court had to determine whether the engineer, who had no direct contract with the occupier, could be held liable for negligence. The plaintiff argued that the engineer was vulnerable and that the occupier could rely on the engineer's work.

The legal issues at hand were whether the engineer owed a duty of care to the occupier, if the occupier could rely on the engineer's work, and if the engineer's negligence caused the damage. The court examined if the engineer, by being retained by the builder, could be seen as having a duty to the occupier. The court also assessed the principles of reliance, vulnerability and causation, as well as the potential for proportionate liability between the builder and the engineer.

The court found that the engineer did not owe a duty of care to the occupier as there was no contract between them. The court emphasised that reliance alone was insufficient to establish a duty of care, and that vulnerability was not a standalone principle in determining duty. The court also held that the builder was the primary contractor and was responsible for the defects, absolving the engineer from liability. The court concluded that the occupier could not rely on the engineer’s work and that causation and proportionate liability favoured the builder.

The court ordered a verdict and judgment in favour of the second defendant, with the plaintiff to pay the second defendant's costs. The proceedings against the first defendant were stayed until further order.