How to Get Building Quotes in New Zealand

How to Get Building Quotes in New Zealand

A building quote is not a price. It is a set of assumptions, and the assumptions are where the argument will be. The number at the bottom of the page is only as good as the scope, the allowances and the exclusions sitting above it, and most homeowners read the total first and the exclusions never.

Here is the part that surprises people. For residential building work at $30,000 or more including GST, a builder cannot legally enter into a contract with you until they have given you prescribed disclosure information and a checklist, and the contract itself must be in writing and dated. That is the Building Act 2004, not good manners. It means a builder who cannot produce those documents is telling you something before a single nail is driven.

So getting good quotes is really a specification exercise. Define the job, send the same documents to everyone, and compare scope rather than totals.

How We Researched This Guide

We worked from the Building Act 2004 itself — sections 362D to 362G on pre-contract information and minimum contract requirements, and sections 362I to 362K on the implied warranties — along with the Building (Residential Consumer Rights and Remedies) Regulations 2014, which set the minimum price at $30,000 including GST. The drafting history is set out in full on legislation.govt.nz if you want to read it yourself.

We also went through the Licensed Building Practitioner scheme rules, the Construction Contracts Act 2002 payment machinery, and the guidance Building Performance publishes for homeowners. One thing we did not do was invent prices. There is no authoritative New Zealand source for what a renovation or an extension costs per square metre, so you will not find dollar figures here. What you will find is what drives the cost and how a quote should be structured.

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The Quick Summary (60-Second Version)

If you read nothing else, read this:

• A quote is a fixed price for defined work; an estimate is a guess that can be exceeded. Ask for a quote, in writing.
• At $30,000 or more including GST, the builder must provide prescribed disclosure information and a checklist before you sign, and the contract must be written and dated.
• You cannot compare building prices without drawings and specifications. A quote against a verbal description is a number attached to an interpretation.
• Allowances and provisional sums are where the money hides. Ask for each one as a separate line and ask what happens if you go over.
• Check the LBP licence class, not just whether someone is licensed. The class has to match the work.
• Payment should be tied to completed stages of work, never to dates.

What Makes Building Quotes Genuinely Incomparable

Two builders can quote the same job and come back with numbers that differ by half, and neither is necessarily wrong. One has priced a tiled shower, the other has allowed a prefabricated unit. One has included scaffolding, the other has assumed you will organise it. One has allowed for consent fees, the other has not. The totals are not comparable because the jobs are not the same job.

The fix is documents. Where the project needs a building consent, the drawings and specifications prepared for that consent application are the natural scope document — they are detailed, they have been through a designer, and every builder is pricing the same thing. For smaller work, a written scope with measurements, materials and a clear list of what is excluded does most of the same job.

What a Good Building Quote Actually Contains

It is broken into stages or elements rather than a single lump sum — demolition, foundations, framing, roofing, cladding, joinery, services, linings, fit-out, landscaping and make-good. It states allowances separately and explicitly. It names the exclusions: consent fees, engineering, consultant fees, asbestos testing, traffic management, scaffolding, temporary fencing, skip hire, cleaning and landscaping.

It also states the price basis on the first page — fixed price, cost plus, or cost plus with a guaranteed maximum. It sets out a payment schedule tied to stages of work, how long the quote is valid for, the programme and the assumptions behind it, and how variations will be priced and approved. And it is dated, on letterhead, with the business name and contact details.

The Legal Layer Most Homeowners Do Not Know About

Section 362D of the Building Act applies to a residential building contract at or above the prescribed minimum price. Before entering into that contract, the contractor must have provided you with prescribed disclosure information and a prescribed checklist. Failing to do so is an infringement offence with a fine not exceeding $2,000.

Section 362F requires the contract itself to be in writing and dated. Entering into an unwritten contract when that section applies is also an infringement offence, again with a fine not exceeding $2,000. And knowingly making a false or misleading statement, or a material omission, in the required information carries a fine on conviction of up to $50,000 for an individual and up to $150,000 for a body corporate.

What the Contract Must Cover

Building Performance lists the key content: the price, scope and timing; the payment process, including dates or stages and how payments will be invoiced, made and receipted; how defects will be remedied, including reference to the implied warranties in sections 362I to 362K; the notices and certificates to be given between the parties; and the dispute resolution process. The contractor is responsible for obtaining all consents and approvals on your behalf, and cannot submit a final payment claim until the work is complete or the Code Compliance Certificate has been provided if one is required.

Those implied warranties cover competent workmanship, the plans and specifications, obtaining consent, compliance with the law, the suitability and newness of products, reasonable care and skill, completion within a reasonable time, habitability, and fitness for a stated purpose. They cannot be contracted out of. Look for the clause that references them.

Checking the Builder Before You Compare Anything

Questions You Might Have

How many quotes should I get?

Three is the usual answer because it gives you a realistic range and makes an outlier visible. But three quotes against three different scopes is worse than one quote against a proper brief. Get the documents right first, then send the same pack to everyone.

What is the difference between an allowance and an exclusion?

An allowance is a provisional sum for something not yet chosen — appliances, tiles, sanitaryware. If you spend more than the allowance, you pay the difference. An exclusion is work simply not in the price at all, such as scaffolding or landscaping. Both change your final bill, and both should be listed separately.

Can a builder change the price after quoting?

On a fixed-price quote, only through a variation you have approved in writing. On cost-plus, the price moves with actual costs by design. Either way, agree the variations process before work starts and insist that nothing proceeds without written sign-off and a price.

What if I find something unexpected behind the wall?

Rot, non-compliant wiring, asbestos and bracing deficiencies are all common in older homes. Agree in advance how discoveries will be handled — who assesses them, how they are priced, and how quickly you have to decide. Hold a contingency for exactly this.

What happens if the work is done badly?

Give the builder the chance to fix it first, in writing. That step matters, because if you get it fixed elsewhere without asking them, you can lose the right to recover the cost. If they will not fix it, the Disputes Tribunal handles claims up to $60,000.

What Matters Most

The quote is not the decision. The scope is the decision. Get the drawings, the specification and the exclusions right, and the numbers that come back will be genuinely comparable — and the gap between the quote and the final invoice will be small. Get them wrong and you will spend the build arguing about what was assumed.

Ask for the disclosure information and checklist before you sign anything. It is a screening test that takes a minute, and it tells you whether the person quoting you knows the rules they are working under.

Then check the licence class, put the payment schedule against completed stages rather than dates, and photograph the site before work starts. None of it is glamorous. All of it is what keeps a build boring, which is exactly what you want.