What has actually happened, and what has not
If you have seen something online about “new building rules” for 2026, here is the short version: none of it is law, and the four changes are not even at the same stage as each other.
Two bills passed their first reading in the New Zealand Parliament on 19 November 2025 — one covering self-certification for plumbers and drainlayers, one strengthening occupational licensing. A first reading is the start of the parliamentary process, not the end.
The other two are earlier still. The liability and home warranty package sits in a Building Amendment Bill that was expected to be introduced in early 2026, and the consent exemption for small dwellings is a stated intention targeted at 2026. Any of the four could change shape, be delayed, or not proceed at all.
This page is the overview. It sets out what each of the four changes is proposed to do, in plain terms, and points to a longer post on the three changes that matter most for how you handle enquiries and quotes. We are not going to tell you how to comply with any of it — more on why below. What we can talk about is what each change would mean for the conversations you have with customers before a job starts.
1. Liability moves from joint and several to proportionate
Under the current joint and several rule, if a builder is found partly at fault for defective work, they can end up liable for the whole cost — including another party’s share — if that other party cannot pay. The proposed change would move to a proportionate model, where each party is only required to pay their fair share for the defective work they actually contributed to.
Alongside that, the Government has proposed mandatory home warranties for new residential buildings up to three storeys, and for renovations of $100,000 or more — a one-year defect period plus a ten-year structural warranty. Separately, mandatory professional indemnity insurance is proposed for design professionals such as architects and engineers. That requirement does not extend to builders, and that distinction is worth holding onto rather than assuming it applies more broadly than it does.
LBP disciplinary penalties would also roughly double: the maximum fine from $10,000 to $20,000, and the maximum suspension from 12 to 24 months.
None of this is in force. The Building Amendment Bill carrying it is expected to be introduced in early 2026, with roughly a year-long implementation period after it passes — putting the earliest operational date around 2027.
We cover what this would mean for enquiry handling in more detail in proportionate liability and why your records would matter more. In short: a ten-year structural warranty and a “who pays their fair share” test both turn on being able to show what was actually agreed and when. A written, timestamped record of every enquiry, quote and promise is exactly what a front desk produces, which is why this one is worth understanding even before it becomes law.
2. A consent exemption for small standalone dwellings
A second proposal would exempt small standalone dwellings — up to 70 square metres, with a simple design, meeting the Building Code — from needing a building consent, provided the work is carried out or supervised by the relevant licensed tradesperson and the homeowner notifies their local council before construction starts and again once it is finished.
This is not law. It is targeted to take effect in 2026, but until it actually takes effect, every small standalone dwelling still requires building consent as normal. If you are quoting one this month, treat it as business as usual.
If it does proceed, the practical effect for builders is less about the build itself and more about enquiry volume — a bigger pool of homeowners considering a sleepout, minor dwelling, or similar small build who previously might have been put off by the consent process. We go into that in the 70 square metre exemption and what it could mean for builder enquiries.
3. Plumbers and drainlayers could self-certify straightforward work
The Building and Construction Sector (Self-certification by Plumbers and Drainlayers) Amendment Bill passed its first reading on 19 November 2025. No implementation date has been announced.
As proposed, it would let approved plumbers and drainlayers self-certify straightforward work without a building consent authority inspection. Only those meeting specific eligibility criteria set and enforced by the Plumbers, Gasfitters and Drainlayers Board would be able to participate. The stated intent is to reduce delays and let consent authorities focus their attention on more complex projects.
For plumbers and drainlayers, if this passes, the interesting effect isn’t the paperwork — it’s job mix and scheduling. Straightforward jobs that used to sit in an inspection queue could move faster, which changes what a front desk needs to triage first. Self-certification for plumbers and drainlayers, and the scheduling knock-on covers that in more detail.
4. Stronger oversight across LBPs, electrical workers, and plumbers, gasfitters and drainlayers
A separate bill, the Building and Construction (Strengthening Occupational Licensing Regimes) Amendment Bill, also passed its first reading on 19 November 2025, with no implementation date announced. It covers Licensed Building Practitioners, licensed electrical workers, and plumbers, gasfitters and drainlayers.
As proposed, it would expand the Registrar’s powers to manage complaints, increase transparency around suspensions and cancellations, streamline how complaints are handled, and introduce new professional codes of ethics. This one doesn’t have its own detailed post in this collection yet, because the operational consequence for a front desk is thinner than the other three — it is largely a licensing and complaints process change rather than something that reshapes enquiry volume or record-keeping in the way the other proposals do.
What we are not going to tell you
We are not a licensing body and we are not lawyers. If you want to know what any of this means for your specific business — your obligations, your paperwork, your risk — talk to your licensing body or your lawyer, not a front-desk service. What we can speak to, credibly, is what happens on the phone and in the inbox before a job starts: how enquiries get captured, how quotes get recorded, and how follow-up gets handled. That is our lane, and we are staying in it across this whole collection.
One place that record-keeping habit already shows up in practice is our quote follow-up example, which illustrates how a scheduled follow-up and a written trail work day to day — the same habit that proportionate liability would make commercially useful, not just tidy.
Keep this in perspective
Every one of these four changes is still a proposal. Two passed a first reading in November 2025; none has an implementation date locked in beyond the general targets above, and select committee, further readings and royal assent still have to happen before any of it is enforceable. Treat “is proposed” and “would, if passed” as the operative words, not “must” or “now requires.”
For the enquiry-handling basics that apply regardless of how any of this lands, our guide to handling trade enquiries covers capture, response speed, qualifying, booking and follow-up — the five stages that matter whether or not a single one of these bills becomes law.
We will revisit this page as each bill moves through select committee and beyond. If you read this after February 2027, treat it as due for a check against the primary sources below rather than current fact.