Council Checks Are Fading. Your Liability Isn’t.

Who's responsible when the council steps back?

New building rule changes are reducing routine council inspections, allowing endorsed plumbers and drainlayers to self-certify work and some granny flats to be built without consent. While this can speed up projects, it also shifts more responsibility onto builders and tradespeople, making documentation, quality assurance, and compliance records more important than ever.

Team ConInnova

Jul 15, 2026

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On 1 June 2026, an amendment allowing plumbers and drainlayers to self-certify their own work received Royal Assent. On the surface, that's a win: fewer council callouts, faster sign-off, less waiting around for an inspector to free up a slot. But if you look at what this sits alongside — the granny flat consent exemption that's been running since 15 January, and the wider push to speed up consenting nationally — there's a bigger pattern here worth understanding, because it changes where the risk sits on your jobs.

As council inspections reduce, the responsibility for proving a job meets the Building Code increasingly sits with the licensed professional and their records.

What Actually Changed

The self-certification scheme lets endorsed plumbers and drainlayers sign off their own work instead of waiting on a council inspection. It's not open slather the Plumbers, Gasfitters and Drainlayers Board acts as gatekeeper, and tradies have to meet defined competence standards and hold adequate civil liability insurance before they're endorsed to self-certify.

This builds on the granny flat exemption already in effect since January, which lets standalone dwellings up to 70m² go up without a building consent at all, provided the design is simple, it meets the Building Code, and the work is carried out or supervised by licensed building professionals. Under that exemption, there are no council inspections during the build construction firms are expected to run their own quality assurance instead.

Put those two together and the direction of travel is clear: less routine council sign-off, more responsibility sitting directly with the tradesperson.

Why this matters more than it sounds like it does

Fewer inspections sounds like less admin. In practice, it's a transfer of risk. When a council inspector signs off a stage of work, some of the liability for that work being compliant sits with the council. When you self-certify, or when a job proceeds under an exemption with no inspection at all, that safety net is gone — the compliance burden, and the liability if something's wrong later, sits with you and your paperwork.

This isn't theoretical. Under the granny flat exemption, if a build later turns out not to meet the Building Code, the person who signed the Certificate of Work is the one exposed — not the council, because the council was never asked to check it. The exemption explicitly shifts liability to the builder, designer, and homeowner once council sign-off is removed from the process.

What This Means for How You Run a Job from Now On

Your records are now your proof, not the council's. Where an inspector used to be a second set of eyes creating an official record, that job now falls to you. Photos at each stage, Records of Work, Certificates of Compliance for plumbing, gas, and electrical. These aren't paperwork for its own sake anymore, they're the only evidence that the work was done to code if it's ever questioned down the track.

Self-certification is a privilege you have to qualify for and keep. If you're a plumber or drainlayer, this isn't automatic, you need to be endorsed by the PGDB, meet competence standards, and carry adequate civil liability insurance. Worth checking your current cover actually matches what self-certifying exposes you to, not just what it covered when council inspected everything.

"Simple design" has real teeth. For granny flats specifically, small details matter more than they used to, for example, a tiled, level-entry walk-in shower isn't covered by the exemption because councils still treat those waterproof membranes as high-risk; a standard tray-based shower is. Get the wrong detail in and you've accidentally taken a job out of the exemption and into full consent territory without realizing it, potentially mid-build.

More small jobs, less council friction, but a lower margin for error. The upside is real, new-home consents rose 16% in the year to April 2026, and minor works that used to stall in council queues can now move faster. But faster only stays a win if your documentation keeps pace with the extra volume.

The Bottom Line

This is a genuine opportunity for faster approvals, fewer stalled jobs, and a system that trusts licensed professionals to get on with it. But "the council isn't checking this" doesn't mean "no one's checking this." It means you are, and your paper trail is what stands between you and a very expensive dispute if a jobs ever questioned later. Worth taking a look at your current QA and record-keeping process now, before the next self-certified job lands on your desk, rather than after something's gone wrong.

This reflects the regulatory position as of July 2026. This is general information, not legal advice. For specifics on your endorsement, insurance, or a particular job, check with the PGDB, your LBP scheme, or a construction lawyer.

References

"What Are the New Building Rule Changes in New Zealand?", Tradify — https://www.tradifyhq.com/blog/what-are-the-new-building-rule-changes-in-new-zealand
"Granny flats building consent exemption becomes law," Licensed Building Practitioners — https://www.lbp.govt.nz/about-us/news-and-updates/granny-flats-building-consent-exemption-becomes-law/
"Granny flats get the consent-free go ahead," Beehive.govt.nz — https://www.beehive.govt.nz/release/granny-flats-get-consent-free-go-ahead
"2026 Granny Flat Rules," EasyBuild Homes — https://easybuild.co.nz/2026-granny-flat-rules/
"Building consents issued: May 2026," Stats NZ — https://www.stats.govt.nz/information-releases/building-consents-issued-may-2026/
"New 2026 Consent-Free Granny Flat Rules in New Zealand and what this means for Home Owners," Vaai Ltd — https://www.vaai-ltd.co.nz/blog/nz-granny-flats