What Is Practical Completion in NZ? (And Why It Is Not the CCC)
- Practical completion is defined by the contract, not the Building Act, so its wording decides what happens next.
- Reaching practical completion starts payment, insurance transfer, the defects liability period and the 12-month defect repair period together.
- Practical completion is not the code compliance certificate, so the contract should say if final payment waits for it.
Practical completion is one of the most used and least defined terms in New Zealand building. Owners hear it and think the house is finished. Builders say it and mean the house can be lived in. Lawyers ask what the contract says, because practical completion is not a term in the Building Act at all. It is a milestone the parties create in the contract, and what it triggers depends entirely on how it was written.
What it usually means
In most residential building contracts, practical completion is the point at which the work is complete except for minor defects and omissions that do not prevent the building being used for its intended purpose. The owner can move in. There may still be a snag list: a door that binds, a paint touch-up, a missing cover plate. Those are recorded and fixed afterwards, but they do not stop practical completion being reached.
It is not the same as every item being finished, and it is not the same as the council being satisfied. It is a contractual judgement, usually made by the builder and accepted by the owner, or by the contract administrator where there is one.
What it triggers
This is why the definition matters. Practical completion typically starts the clock on several things at once.
The final or practical completion payment becomes due, less any retention. The defects liability period in the contract begins, often 90 days or more, during which the builder returns to fix items on the defects schedule. Responsibility for the site, including insurance and security, passes from the builder to the owner. Liquidated damages for late completion, if the contract has them, stop accruing. And the 12-month defect repair period under section 362T of the Building Act 2004, which applies to residential building work regardless of what the contract says, starts to run from completion, so the date should be recorded.
If the contract does not say what practical completion means, each of those consequences is open to argument.
If the contract does not say what practical completion means, each of those consequences is open to argument.
Practical completion is not the code compliance certificate
The code compliance certificate is a Building Act document. Under sections 92 to 95 the owner applies to the council after the consented work is complete, and the council must decide within 20 working days whether the work complies with the consent. The CCC is about the consent; practical completion is about the contract. A house can reach practical completion before the CCC is issued, and often does, because the CCC application is lodged after the final inspection and takes time. The contract should say whether the final payment waits for the CCC or not, because the two events are weeks apart and a lot of money sits between them.
How to document it
A practical completion certificate, one page, signed by both parties. The date. A statement that the works have reached practical completion as defined in the contract. The defects schedule attached, listing every outstanding item with a date for rectification. A list of the documents handed over: warranties, certificates, manuals, inspection records, the CCC status. The retention held and when it will be released.
Across 13,567 publicly posted reviews of NZ builders and outdoor and civil contractors, clear explanation is praised in 40.7% of positive builder reviews and 34.2% for civil, while aftercare and follow-up is praised in only 2.2% and 1.9%. Practical completion is the moment both of those are tested: explaining what the certificate means, and then coming back for the defects on the day you said you would. Referral language appears in 62.4% and 62.7% of positive reviews, and it is largely decided here.
Common mistakes
Calling practical completion when the house cannot be used: no hot water, no working kitchen. Owners rightly refuse. Treating the defects schedule as optional and leaving the owner to chase each item. Not recording the date, so nobody knows when the 12 months started. Tying the final payment to the CCC without saying so, and then discovering the council has a queue.
A pack
The handover and practical completion pack in our resource library has a practical completion certificate, a defects schedule, a room-by-room handover inspection checklist and a documents-handed-over list, free in PDF and Word, with the Building Act sections referenced and dated 9 October 2026. Not legal advice; the definition that governs is the one in your contract.
Practical completion is a line in the contract. Make sure it is one you can point to.
What to do on Monday
- Check your current contract’s definition of practical completion before any handover conversation with the owner.
- Record the practical completion date in writing so the defects liability period starts clearly.
- Prepare a defects schedule and documents-handed-over list using the handover and practical completion pack.
Sources and legal references
Legislation and agency links checked on 9 October 2026. This is general information, not legal or tax advice.
