Having the correct consent documents ready before your building inspector arrives is not just good practice — in New Zealand, it is a legal requirement under the Building Act 2004. Inspectors can and do refuse to carry out an inspection if the required paperwork is not available on site, which can cause frustrating and expensive delays to your build or renovation.
The Core Documents You Must Have on Site
Before any inspection, make sure the following are accessible at the property:
- Approved building consent – The original consent document issued by your local council (territorial authority). This confirms the work has been approved.
- Approved plans and specifications – The stamped, council-approved drawings and specifications that form part of your consent. These must be the approved versions, not earlier drafts.
- Inspection record (or inspection card) – Many councils issue a card or booklet listing the required inspection stages. The inspector will sign this off at each stage.
- Producer statements (PS1, PS2, PS3, PS4) – Where required, these are written statements from engineers or other specialists confirming design or construction meets the NZ Building Code. Your builder or engineer will advise if these apply to your project.
- Any amendments to the consent – If changes were made to the original plans and a consent amendment was approved, have that paperwork on site too.
Why the Approved Plans Must Match the Work
One of the most common reasons an inspection is declined is that the work on site does not match the approved plans. Inspectors check the physical construction against the stamped drawings, so any variation — even a small one — needs to be formally approved before the inspection takes place. If you have made changes, contact your council to apply for an amendment before booking the inspection.
For guidance on what the NZ Building Code requires at each stage, MBIE Building Performance is an excellent starting point.
Inspection Stages and What Triggers Each One
Building consents typically require inspections at specific stages of construction. Common inspection points include:
| Stage | What the Inspector Checks |
|---|---|
| Pre-pour (foundation) | Reinforcing steel, formwork, ground conditions |
| Framing | Structural framing, bracing, fixings |
| Pre-line (pre-wrap) | Insulation, underfloor, cavity, flashings |
| Drainage (wet areas) | Waterproofing, falls, waste connections |
| Final inspection | All work complete, code compliance |
Your consent documents will list which inspections are required for your specific project. Do not skip a stage — if you cover up work before it has been inspected, you may be required to open it up again.
Additional Documents That May Be Required
Depending on the nature of your project, the inspector may also want to see:
- Geotechnical or engineering reports – Particularly for foundations on difficult ground.
- Manufacturer's technical data sheets – For specific products such as waterproofing membranes, cladding systems, or structural connectors. BRANZ publishes appraisals for many building products used in NZ.
- Certificates of work – For restricted building work (RBW), licensed building practitioners must provide a Record of Work (ROW). Check the Licensed Building Practitioners website for more information.
- Electrical and plumbing certificates – Electrical work must be carried out by a registered electrician (see EWRB) and plumbing/drainlaying by a licensed tradesperson (see PGDB). Certificates of compliance for this work may be needed at final inspection.
Keeping Documents Safe and Accessible on Site
It is good practice to keep all consent documents in a weatherproof folder or document wallet stored on site throughout the project. Make sure your builder and any subcontractors know where the documents are kept. Some councils now issue digital consents — check whether a printed copy is still required or whether a digital version on a tablet or phone is acceptable.
When to Call a Professional
If you are unsure which documents apply to your project, or if your paperwork is incomplete, contact your local council's building department before booking an inspection. A Licensed Building Practitioner (LBP) or your project's main contractor can also help you understand what is required at each stage. For complex projects involving structural engineering, specialist engineers will prepare the producer statements you need.
You can find qualified local building inspectors and LBPs on tradedirectory.co.nz to help keep your project compliant and on schedule.
Licensed Building Practitioner (LBP)
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