8 January 2026 · Contracts & Risk
The Practical Completion Certificate: What It Is and Why It Matters
The Practical Completion Certificate (PCC) is the document that formally marks the transition from the construction phase to the defects liability period. It's issued by the superintendent (or the principal, in contracts without a superintendent) when the works have reached practical completion.
Understanding what the PCC does — and what it doesn't do — is essential for both contractors and principals.
What the PCC certifies
The PCC certifies that the works are complete in accordance with the contract, except for minor defects that don't prevent the building from being used for its intended purpose. It is not a certificate that the works are perfect, defect-free, or fully complete in every detail.
The "minor defects" exception is significant. It means that the presence of some defects doesn't prevent practical completion from being certified — as long as those defects are genuinely minor and don't impair the building's function.
What constitutes "minor" is one of the most disputed concepts in construction contract administration.
What the PCC triggers
At practical completion, several contractual mechanisms are triggered simultaneously:
Risk transfer. Under most standard contracts, risk in the works passes from the contractor to the principal at practical completion. Before practical completion, the contractor bears the risk of damage to the works. After, the principal does.
Retention release. The first tranche of retention (typically 50%) is released to the contractor on practical completion.
DLP commencement. The defects liability period starts running from the date of practical completion, not from the date the PCC is issued.
LD cessation. The contractor's exposure to liquidated damages ends at practical completion. Any LDs accrued before practical completion may still be applied, depending on the contract terms.
Insurance changes. The contractor's obligation to maintain works insurance typically ends at practical completion.
Common disputes around practical completion
The contractor claims practical completion; the superintendent disagrees. The contractor wants retention and the DLP clock running. The superintendent has a list of items they don't consider minor. This dispute is common, particularly on projects where the relationship has been strained.
Most standard contracts provide a mechanism for the contractor to dispute a refusal to certify practical completion. Using it correctly — giving notice within the required timeframe — is critical.
Outstanding authority approvals. Some contracts require all council and authority approvals to be in hand before practical completion can be certified. If a certificate of occupancy is delayed, this can hold up practical completion even when the physical works are complete.
As-built documentation and O&M manuals. Contracts that make the provision of as-built documentation and O&M manuals a condition of practical completion create a checklist that needs to be managed. These items should be tracked from the start of the project, not assembled in the final week.
What to check before the PCC is issued
Before the superintendent issues the PCC:
- Walk the building and create a defects list — identify what's genuinely minor vs. what needs to be completed before certification
- Confirm all authority approvals are in hand
- Confirm as-built documentation and O&M manuals have been received (or agree a delivery schedule with retained funds)
- Calculate the LDs position and document it
- Prepare the first retention release calculation
Practical completion is not the end of the project — but getting it right sets up the DLP for a clean close-out.
Close-out and DLP management is part of our Full PM Partnership service. Contact us to discuss how we manage the practical completion process.
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