Construction quality problems surface long after completion, and by then the crew has dispersed, the records are incomplete, and the Building Act’s long limitation period means the claim is still live. Quality management is therefore as much about evidence as about workmanship.
Why the timing matters
Weathertightness failures, structural issues and services defects frequently appear years after practical completion. Claims can be brought within the statutory long-stop period for civil proceedings relating to building work, which is long.
Two consequences: the records must survive that long, and they must be good enough to be read by someone who was not there.
Inspection and hold points
The most effective quality control is checking work before it is covered up. Once linings go on, a defect is expensive to find and expensive to fix.
Define hold points where work stops for inspection and sign-off:
- Foundations and reinforcement before pour.
- Framing before wrap.
- Building wrap and flashings before cladding.
- Services rough-in before lining.
- Waterproofing before tiling or covering.
These substantially overlap with council inspection stages, which exist for the same reason. Treat the council inspection as a minimum and add your own where the risk warrants.
Photograph everything that gets covered
The cheapest and most valuable quality record available. Dated photographs of framing, flashings, waterproofing, services and reinforcement before they are concealed.
Filed by project and by location, they answer questions years later that nobody can otherwise answer. Every experienced builder who has been through a defect claim wishes they had more of these.
The documentation set worth keeping
- Approved consent documents and all revisions, with a record of which version was built to.
- Producer statements issued and received.
- Records of work from Licensed Building Practitioners, provided at completion rather than chased later.
- Product documentation — appraisals, certificates, technical literature and warranties for materials used, and evidence they were installed per manufacturer instructions.
- Council inspection records and any resulting corrections.
- Site diary and weather records, since weather at critical stages matters for weathertightness claims.
- Subcontractor details — who did what, when, with their licence details and insurance.
- Variations and instructions.
Product installation is a recurring failure point. A compliant product installed contrary to manufacturer instructions voids the appraisal and the warranty, and it is the installer who carries it.
Subcontractor quality
Most defects on a residential project arise in subcontracted work. Managing that means:
- Verifying licence class before engagement, on the public register.
- Confirming insurance, including that it responds to the work they are doing.
- Being specific about the standard and the details required rather than assuming.
- Inspecting before covering up, not after.
- Obtaining records of work and producer statements at completion, while payment is outstanding.
Overlapping health and safety duties apply as well — you cannot contract out of duties for work you influence.
Code compliance certificate
Applications for a CCC must generally be made within two years of consent being granted unless an extension is agreed.
The number of New Zealand properties with open consents that were never closed out is substantial, and it becomes the owner’s problem years later at sale — frequently with the builder long gone and the records unavailable.
Close consents out. It protects the client and it protects you.
Handover and maintenance information
Providing maintenance requirements at handover matters legally as well as commercially. Many weathertightness and product warranties depend on specified maintenance, and a claim may fail or succeed on whether the owner was told.
Provide it in writing and keep a copy showing it was provided.
Defects liability period
Use it actively. A defects inspection near the end of the period, with issues identified and rectified, resolves problems while access is easy and the crew is available.
Businesses that treat the defects period as a hope that nobody calls end up dealing with the same issues later at greater cost.
Implied warranties
Warranties implied under the Building Act apply to residential building work and cannot be contracted out of. They cover matters including good trade practice, suitability of materials, and compliance with the building consent.
They give the owner rights against the builder, which are worth little if the builder no longer exists — which is why third-party guarantee products exist, and why a business intending to be around should keep records that let it defend itself.
MBIE publishes guidance on implied warranties, records of work and the CCC process free at building.govt.nz.
General information only, not legal advice.
