Practical Completion

Practical completion (PC) is one of the most significant milestones in a construction contract. It's the point at which the works are complete — or complete enough — for the building to be used for its intended purpose, even if minor defects remain. Getting PC right has major financial and legal consequences for developers, contractors, and purchasers alike.

What actually triggers PC? Under most Australian standard form contracts, the contractor notifies the superintendent that they believe the works have reached practical completion. The superintendent then inspects the site and makes an assessment. If the works are substantially complete — meaning they can be used for their intended purpose despite minor omissions or defects — the superintendent issues a certificate of practical completion. The key word is "minor." Incomplete fire safety systems, missing waterproofing, or non-functional services aren't minor. A scratched door handle or a paint touch-up is.

When PC is certified, several critical things happen simultaneously. First, the risk of loss or damage typically transfers from the contractor to the developer. You need insurance in place from this date. Second, the defects liability period begins — usually 12 months during which the contractor must return to fix any defects that emerge. Third, the contractor is entitled to release of the first half of retention monies, typically 2.5% of the contract sum. Fourth, the clock stops on liquidated damages. And fifth, if you're selling off-the-plan, settlement timelines with purchasers start running.

The superintendent's role in assessing PC is critical — and often contentious. They need to inspect the works thoroughly, compile a list of outstanding items, and make a judgment call on whether what remains is genuinely minor. This requires experience and independence. A superintendent who certifies PC too early, under pressure from the contractor, leaves the developer with an incomplete building and diminished leverage. A superintendent who unreasonably withholds PC exposes the developer to contractor claims for additional costs and even damages.

Common disputes around PC are predictable. Contractors push for early certification because it stops the LD clock and triggers retention release. Developers resist because once PC is certified, their contractual leverage drops significantly. Arguments often centre on whether outstanding items are "minor defects" or "incomplete works" — the distinction matters because incomplete works can prevent PC, while minor defects cannot. Another frequent dispute involves the contractor claiming they achieved PC on a certain date even though the superintendent didn't certify it until weeks later. The date matters because it determines when LDs stop accruing and when the DLP clock starts.

For developers selling off-the-plan, PC carries additional commercial pressure. Contracts of sale typically require settlement within 14 to 21 days of the developer issuing a notice that the lot is ready for settlement — and you can't issue that notice until PC is achieved. Miss PC by months and your buyers get nervous. Miss it long enough and they may exercise sunset clauses to terminate their contracts, leaving you with unsold stock in a potentially weaker market.

On multi-stage projects, each stage can have its own PC date. This means you could be managing one stage in the defects liability period while another is still under construction. Each stage has its own retention schedule, its own DLP expiry, and its own settlement timeline. Without clear tracking, dates get missed and money gets left on the table.