How to check a building inspector is any good

In New Zealand, building inspection is not a licensed profession. There is no government register, no mandatory qualification, and no legal barrier stopping anyone from printing a business card and charging you several hundred dollars for a report. The two industry bodies that do set standards, NZIBI and BOINZ, are both voluntary. That means the checking is your job, and it comes down to four things: whether they belong to a body that can discipline them, whether they carry professional indemnity insurance, whether they report to NZS 4306, and whether they will show you a sample report before you pay.

Is a building inspector licensed in New Zealand?

No. Unlike electrical work or plumbing, residential property inspection is not a regulated occupation here, so there is no licence to check and no register to search.

Two voluntary bodies fill some of that gap. The New Zealand Institute of Building Inspectors (NZIBI) was set up specifically around pre-purchase house inspections, and the Building Officials Institute of New Zealand (BOINZ) covers building officials more broadly. Both set standards for their members and both operate a complaints process.

Membership is the closest thing to a credential available. It is not proof of competence, but it does mean somebody other than you can hold the inspector to account.

What should I ask before hiring one?

Five questions, in the order that filters fastest.

1. Which body are you a member of, and what is your membership number? A member can answer instantly. Then check it on the body's own website rather than taking the answer on trust.
2. Do you carry professional indemnity insurance, and for how much? This is the question that matters most and gets asked least. If an inspector misses something expensive, indemnity insurance is what stands between their mistake and your bank balance. No insurance means no practical recourse.
3. Do you report to NZS 4306? This is the New Zealand standard for residential property inspection. An inspector who reports to it is working to a defined scope, so you know what was and was not covered.
4. Can I see a full sample report? Not a summary, not a template, a real redacted report. This is the single most revealing thing you can ask for.
5. Will you talk me through the findings afterwards? A report you cannot interpret is not much use when you are deciding whether to buy.

What does a building inspection actually cover?

A pre-purchase inspection is a visible condition assessment. The inspector looks at what can be seen and reached on the day. They do not open up walls, lift floor coverings, or move heavy furniture, and that limitation is normal rather than a failing.

Standard guidance is that the basic checks should include:

That last row is worth dwelling on. Unconsented alterations become the new owner's problem, and they are one of the more common expensive surprises.

What does a building report cost?

Commonly quoted prices for a residential pre-purchase report sit between about $400 and $1,000, varying with the size of the property, its location, and how detailed the report is. Trade Me has put the average at around $550.

Price is a weak signal of quality in either direction. A cheap report from an insured NZS 4306 member is worth more than an expensive one from someone with neither. Judge the sample report and the insurance, not the invoice.

What should make me walk away?

• No indemnity insurance. There is no good version of this answer.
• Refusing to show a sample report. Either they are not proud of it, or it does not exist yet.
• A verbal-only report, or a one-page summary with no photographs. You cannot negotiate with a conversation, and you cannot revisit it in a year.
• A report that arrives with no stated scope, so nothing tells you what was excluded or why.
• Being told a property is "fine". A condition report describes condition. An inspector who deals in reassurance rather than findings is not doing the job.

What a good report looks like when it arrives

A report worth what you paid for it is specific rather than generic. Each finding should say what was observed, where it is, why it matters, and what to do about it, and it should be attached to a photograph. "Some deterioration noted to exterior" tells you nothing. "Cracked mortar to the chimney on the south elevation, allowing water entry, repoint within 12 months" tells you what you are dealing with and roughly what it will cost to fix.

If the findings in your report do not read like the second version, you have paid for a document rather than an inspection.