V601 Developments Pty Ltd v Probuild Constructions (Aust) Pty Ltd

V601 Developments Pty Ltd brought a claim against Probuild Constructions (Aust) Pty Ltd in the Supreme Court of New South Wales, alleging breaches of a building contract, specifically focusing on delays, the management of those delays, and the financial consequences that arose from the delays. The dispute encompassed various claims, including requests for extensions of time due to project delays, disputes over the independence of the Project Manager, the determination of practical completion, and the calculation of delay damages. The case also addressed issues related to the apportionment of delay damages between separable portions of the work and the entitlement to a bonus, as well as a claim for certified liquidated damages and variations.

The court was tasked with determining whether the Project Manager was sufficiently independent to make decisions on extensions of time, as well as the appropriate method to analyse delays and calculate delay damages. The court had to assess the validity of the contractor’s claims for extensions of time and the application of the prevention principle, which allows for extensions of time where delays are caused by the employer or other events outside the contractor's control. Additionally, the court needed to determine the apportionment of delay damages between separable portions of the work and whether the contractor was entitled to a bonus. The court also had to consider the employer's claim for certified liquidated damages and the validity of the claim for variations.

In its decision, the court found that the Project Manager was not independent, which affected the validity of the extensions of time granted. The court established that the correct approach to delay analysis involved a detailed examination of the contract terms and the specific events causing the delays. The court held that the prevention principle was applicable in certain circumstances, allowing for extensions of time. Regarding delay damages, the court clarified the method for apportionment between separable portions of the work. The contractor was found to be entitled to a bonus for early completion of certain sections of the work. The employer's claim for certified liquidated damages was assessed, and the court ruled on the validity of the variations claimed.

The court ordered that certain extensions of time were invalid due to the lack of independence of the Project Manager. It set out a detailed approach to delay analysis, applying the prevention principle where appropriate. The court apportioned delay damages between the separable portions of the work and confirmed the contractor's entitlement to a bonus. The employer's claim for certified liquidated damages was partially allowed, and the variations claim was partly upheld. The final orders addressed the financial consequences of the delays and the breaches of contract identified during the proceedings.