Twenty Working Days: The Construction Contracts Act and Your Auckland Renovation

The contract is signed, the gib is coming off, and an invoice lands in your inbox with a two-page notice stapled to the back of it. The notice is headed Form 1, it reads like it was written for somebody else, and most homeowners skim it and file it. That notice is a prescribed legal document issued under the Construction Contracts Act 2002, and the moment it arrives you're on a clock.

New Zealand has two laws sitting over your renovation, not one. The Building Act 2004 decides what has to be in your contract before you sign, which is the ground Superior Renovations' guide to the $30,000 rule and when a written building contract is required covers in full. The other one governs how money actually moves once the job is underway, and who wins when you and your builder disagree about an invoice. Almost everything written about it in New Zealand is written for builders. This is the homeowner's side of it.

Where the Construction Contracts Act 2002 Sits in Your Renovation

The two Acts do different jobs at different moments. The Building Act 2004 and its consumer regulations are front-loaded: the disclosure statement you get, the checklist you get, the clauses your contract must contain, the ten-year implied warranties, the twelve-month defect period. All of that is settled before you pick up a pen. Worth reading twice, alongside the contract terms worth reading twice before you sign.

The Construction Contracts Act 2002 does the opposite. It barely cares what you agreed. It cares about the invoices that follow, the deadlines attached to them, and who wins if nobody answers in time. It's the plumbing of the money side, and it runs whether or not anyone's told you it exists.

Two things about its reach catch people out. Section 9 applies the Act to every construction contract for work carried out in New Zealand, and it doesn't care whether that contract is written, oral, or partly both. A handshake deal is still inside the regime. Then section 6 defines construction work to include the alteration, repair, restoration, renewal, maintenance and extension of a building. A renovation is construction work, so your renovation contract is a construction contract. No size threshold. No exemption for a job on your own home.

"People assume the contract is the finish line. It isn't, it's the starting gun. The document I want a client to actually understand is the one that turns up with the second invoice, because that's the one with a deadline on it and nobody ever explains it to them." Dorothy Li, Design Manager, Superior Renovations

The Residential Carve-Out That Disappeared in 2015

Here’s the part almost nothing written for homeowners mentions. The Act used to treat residential construction contracts differently. Sections 10, 62, 63 and 64 carved out special provisions for work on people's homes, on the fair view that someone renovating a bungalow shouldn’t face the same commercial machinery as a property developer.

Those sections were repealed on 1 December 2015 by the Construction Contracts Amendment Act 2015. Since that date, residential and commercial construction contracts sit inside the same payment regime. If you’re having your Mt Eden villa reconfigured, the timetable that applies to your invoices is the timetable that applies to a commercial site in the CBD.

Two consequences follow, and they pull in opposite directions.

The protection you kept

Section 31 still bars a claimant from seeking approval for a charging order over a home owned by an individual who is occupying it, or intends to occupy it, wholly or mainly as a dwellinghouse. The same bar applies where the home is held by a family trust and a beneficiary occupies it. An unpaid contractor can’t go through the Act's adjudication process to put a charge over the house you live in. That’s a genuine and deliberate protection, and it’s the main thing the 2015 amendment left standing for owner-occupiers.

The protection you never had

Retentions work the other way. When money is held back from a contractor as security for performance, the Act now requires it to be held on trust and properly accounted for, with the rules tightened again by the Construction Contracts (Retention Money) Amendment Act 2023. That regime applies to a commercial construction contract, and the Act defines a commercial construction contract as one in which none of the parties is a residential occupier.

Read those two together and the position is unusual. As an Auckland homeowner you’re inside the Act’s strict payment timetable and outside its retention money protections at the same time. If your contract lets you hold retentions, that money isn’t sitting in a statutory trust the way it would on a commercial job.

What a Payment Claim Is Under the Construction Contracts Act 2002

An invoice from your builder is often not just an invoice. If it's served as a payment claim under section 20, it carries legal weight, and section 20(2) sets out what it has to contain. A payment claim must:

be in writing
contain enough detail to identify the construction contract it relates to
identify the construction work and the period it covers
state a claimed amount and the due date for payment
indicate how the claimed amount was calculated
state that it is made under the Act

That last line is the tell. If the paperwork says it is made under the Construction Contracts Act 2002, treat it as a payment claim and not as an ordinary bill.

Section 20(3) then requires the claim to be accompanied by a written outline of the process for responding to it and an explanation of what happens if you don't respond, or don't pay in full. That's the Form 1 notice, a prescribed document published by Building Performance. It's dry, but it's written in plain English and it tells you exactly where you stand. Its own summary of your options is short: pay the claimed amount in full by the due date, or send a written payment schedule saying what you'll pay instead, which the notice says could be nothing.

Check the claim is actually valid

Everything in the next section flows from a valid payment claim. If the paperwork falls short of section 20, whether that's failing to state it's made under the Act, not indicating how the amount was calculated, or turning up with no Form 1 notice attached, then whether it counts as a payment claim at all becomes arguable. Don't treat that as a reason to ignore it. Treat it as a point to raise in writing, inside the window, as part of your response. Arguing after the deadline that a claim was never valid is a far weaker position than answering on time and saying so.

The Twenty-Working-Day Clock, and Its Christmas Hole

This is where homeowners get caught. Under section 22, if a payment claim is served on you and you don't provide a payment schedule within the time your contract requires, or within 20 working days where your contract says nothing about it, you become liable to pay the claimed amount on its due date. Not the fair amount. Not the amount the work was worth. The amount that was claimed.

Watch out for the fact that two separate 20-working-day periods can be running at once, which is part of why this trips people up. Where your contract sets no due date for payment, Form 1 says payment falls due 20 working days after the claim is served on you. The window for getting a payment schedule back is also 20 working days where the contract is silent. Check your own contract for both, because if it sets its own timeframes, those are the ones that bind you.

Section 23 sets out what follows if you then don't pay: the contractor can recover the unpaid portion from you as a debt in court, along with reasonable recovery costs awarded against you, and can serve notice of an intention to suspend work. Under section 24A, once that notice is served and five working days pass without payment, they may suspend. A contractor who lawfully suspends isn't in breach of the contract, isn't liable for your losses, and is entitled to more time to finish. Your job simply stops, and the clock on your build runs on.

Now the detail that bites in Auckland. The Form 1 notice defines a working day as any day other than a Saturday, a Sunday, a public holiday, or any day from 24 December to 5 January. That fortnight simply doesn’t count. So a claim served in the third week of December has a response window that runs well into the new year, which cuts both ways. More room than you’d think if you’re at the bach. Very easy to lose track of if you assume the deadline has already gone and quietly stop engaging.

None of this is a reason to panic about a routine invoice for work that was done properly. It’s a reason to never let a disputed claim sit unanswered while you wait for a phone call back. Silence is the one response the Act treats as agreement.

How to Write a Payment Schedule

A payment schedule is less intimidating than it sounds. Section 21 says it must be in writing, identify the payment claim it responds to, and state a scheduled amount, which is simply the figure you’re prepared to pay. If that figure is lower than the claimed amount, the schedule has to show how you calculated it, give your reasons for the difference, and state your reasons for withholding payment.

In practice that means an email doing four things: naming the claim it answers, stating a number, showing the arithmetic behind the number, and explaining why. Say you’re holding back $4,200 because a benchtop upgrade was never approved in writing and the ensuite tiling is half done. Write exactly that, and split the figure so it’s obvious which part relates to which issue. Vague is the enemy here.

Three habits keep you out of trouble here.

Respond in writing, always. A conversation on site isn’t a payment schedule, no matter how reasonable it was or how clearly you both understood each other.
Pay the scheduled amount by the due date. Sending a schedule and then not paying the figure you yourself proposed puts you back in the same position under section 24.
Keep the variation trail in one place. Most disputed claims are really disputed variations, and the argument is almost always about whether a change was approved before the work happened.

"Nearly every payment argument I've seen started as a material change. Someone upgrades the benchtop on site, it feels like a small thing in the moment, and three weeks later it's a line on an invoice nobody remembers agreeing to. Get it priced and emailed before the order goes in, and there's nothing left to argue about." Alison Yu, Designer, Superior Renovations

If a claim genuinely can’t be resolved between you, section 25 gives either party the right to refer the dispute to adjudication, and that right stands even if court proceedings are already on foot. Adjudication is fast by design. Whether it’s the right move for your situation is a question for your own lawyer, not for a renovation company, and the Form 1 notice says the same thing in its closing line.

It Reaches Further Than Your Builder

The Act’s definition of construction work is wider than most people assume, and two extensions matter on a typical Auckland renovation.

Design and engineering work has been construction work since 1 September 2016, under section 6(1A), along with quantity surveying. So the invoices from the person drawing your plans sit inside the same payment regime as the invoices from the person building them, which is worth knowing before you query one. Sonder Architecture on what architectural plans cost sets out how design fees are usually staged.

Painting and decorating, inside or out, is expressly named as construction work in section 6(1)(g). A standalone repaint contracted directly with a painting company is a construction contract in its own right, with the same claim and schedule mechanics attached. Superior Painters on what a painting quote should include is a good check on whether a quote gives you enough detail to query a claim against it later.

What This Looks Like on a Job We Run

All of this matters because most Auckland renovations sit comfortably in the territory where invoices are large and staged. On current figures a mid-range bathroom renovation in Auckland runs $25,000 to $35,000, a mid-range kitchen $26,000 to $35,000, and a mid-range full home renovation $80,000 to $160,000. A full reno on a Grey Lynn villa or a North Shore brick-and-tile doesn’t get paid for in one hit. Every stage is a claim.

There's no honest dollar figure to put on the Act itself, because it costs nothing to comply with and everything to ignore. What you can price is the work underneath it. The free calculators on superiorrenovations.co.nz let you put a range around your project before the first claim arrives, which is a more useful exercise than most people expect, alongside what renovation work actually costs in Auckland right now.

On our own jobs we try to make the whole mechanism boring. Every Superior Renovations project runs on a written fixed-price contract, so the total is locked before we start and the only thing that moves it is a variation you’ve approved in writing. Claims are tied to stages you can walk up to and look at. And you get a project manager who owns the payment stages rather than a different number to ring each time, which is the same principle we apply across full-home renovations run by one team from first drawing to handover. If you’d rather see how the staging works on paper before you commit to anything, that’s exactly the sort of conversation our showroom at 16B Link Drive, Wairau Valley is there for.

The goal isn’t to become an expert in the Construction Contracts Act 2002. It’s to recognise the paperwork when it arrives, answer it in writing, and never let a deadline pass by accident.

Questions Auckland Homeowners Ask

Does the Construction Contracts Act 2002 apply to my home renovation?

Yes. Section 9 applies the Act to every construction contract for work carried out in New Zealand, written or oral, and section 6 defines construction work to include alteration, repair, renewal, maintenance and extension of a building. There is no minimum value and no exemption for work on your own home.

What is section 20 of the Construction Contracts Act 2002?

Section 20 governs payment claims. It requires a claim to be in writing, identify the contract and the work, state the claimed amount and due date, show how the amount was calculated, and state that it is made under the Act. It must also be accompanied by a written outline of how to respond, which is the prescribed Form 1 notice.

What happens if I ignore a payment claim from my builder?

Under section 22 you become liable for the full claimed amount if you do not provide a payment schedule within the time your contract sets, or 20 working days if it sets none. The contractor can then recover it as a debt in court with costs, and can give notice and suspend work five working days later.

Can a builder put a charge over my house if I do not pay?

Not through the Act's adjudication process, where the home is owned and occupied by an individual, or held by a family trust with a beneficiary living in it. Section 31 bars a claimant from seeking a charging order in those circumstances. Other legal avenues are a separate question for your own lawyer.

Does the retention money trust protection cover homeowners?

No. The retention money regime applies to a commercial construction contract, which the Act defines as one where none of the parties is a residential occupier. If you hold retentions on a renovation of your own home, that money is not protected by the statutory trust that applies on commercial jobs.

Knowing that a second Act sits over your renovation changes very little about the building itself, and quite a lot about how calmly you handle the paperwork. Recognise a payment claim, diarise the response date, and put every disagreement in writing on the day it comes up. If you would like to walk through how a fixed price and a staged payment schedule would work on your place, book a free in-home consultation and bring the paperwork with you.

This article is general information about how the rules work, not legal advice. For anything specific to your contract or a claim you have received, talk to an independent lawyer. Questions about restricted building work, consents or the Building Code should go to a Licensed Building Practitioner or Auckland Council.

Construction Contracts Act 2002: A Homeowner's Guide