From 7 July 2026, endorsed plumbers and drainlayers in New Zealand can self-certify eligible low-risk work instead of waiting for a BCA inspection. This means faster job completion and easier scheduling. It's opt-in, administered by the PGDB, and comes with real liability: you're signing off the work yourself. This article covers eligibility, what work qualifies, how to apply, the Certificate of Compliance, and what it means for you day-to-day.
Being able to self-certify your work means everything is faster and more convenient. But the responsibility that comes with it is real. Read ahead to find out what self-certifying your work will mean for you, before you apply.
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It's a voluntary, opt-in system that allows endorsed certifying plumbers and drainlayers to certify that eligible work complies with the building consent without a BCA inspector coming out to check it.
Think of it as the same framework gasfitters have operated under for the past 13 years. Plumbers and drainlayers are now getting the same.
"We have advocated strongly for self-certification for years and have worked closely with the Minister to ensure it will deliver the cost and time-saving benefits intended." - Greg Wallace, Master Plumbers Chief Executive
The scheme is administered by the Plumbers, Gasfitters and Drainlayers Board (PGDB). The Board ran a webinar on 18 May 2026 covering the eligibility criteria, endorsement process, and documentation requirements. It’s worth watching if you're getting ready to apply.
Self-certification webinar 2 - 18 May 2026
Not every plumber and drainlayer can apply for self-certification. Eligibility is tightly controlled. To self-certify, you need to:
Once endorsed, your name appears on the PGDB's public register so clients can verify you're authorised to self-certify.
If you're not yet at certifying class, this scheme isn't available to you. The work still goes through the standard BCA inspection process.
Self-certification is also not suitable for work you didn't supervise on-site. The PGDB will publish more detail on supervision requirements later in 2026.
The scheme covers low-risk, routine plumbing and drainlaying work on everyday buildings, the kind of jobs most certifying plumbers and drainlayers do regularly.
You can self-certify sanitary plumbing work if it's on a qualifying building (see below) and follows standard Building Code compliance pathways, what the regulations call an acceptable solution or verification method.
You cannot self-certify sanitary plumbing work that:
The same qualifying building and compliance pathway rules apply. One key difference: the shared wall and fire separation exclusions don't apply to drainlaying, only to sanitary plumbing.
Septic tanks, water tanks, greywater systems, solar hot water, and irrigation can all be self-certified, even if there's no standard compliance pathway for that specific system design. The on-site system exception covers both plumbing and drainlaying.
Three storeys or under, and not an apartment block. That covers the vast majority of residential, commercial, and light-industrial work that most plumbers and drainlayers take on.
One thing that doesn't change: building consent is still required for the project. What self-certification replaces is the BCA inspection of the plumbing and drainlaying component, not the consent itself.
If a client chooses to use self-certification (and it's their choice, not yours to impose), here's how it works:
If an amendment or minor variation causes work to fall outside the scope of self-certification, standard BCA inspections apply. If a client changes their mind and wants BCA inspection instead, it's the building consent applicant's responsibility to file an amendment to the consent.
The Certificate of Compliance is a prescribed form set by the PGDB. It's not just a signature; it's a formal record that you're standing behind the work. The regulations specify exactly what must be included.
The jobs where self-certification works smoothly are the ones where your records are tight from the start; photos taken as you go, test results logged on the day, notes made before you leave the site.
This is the part worth sitting with before you apply for endorsement. Under the traditional process, a BCA inspector signs off on the work. Under self-certification, you sign off on it. You are liable for the work you certify. If it doesn't comply with the Building Code:
Your endorsement can also be removed. This isn't a reason to avoid the scheme; it's a reason to go in with your eyes open, your insurance reviewed, and your paperwork in order.
The endorsement requires you to demonstrate the ability to meet potential civil liability, so if you're not already carrying adequate professional indemnity and public liability cover, talk to your broker before you apply.
The short answer is: No. And the PGDB has flagged that there's genuine confusion here. They're two separate schemes with different legal pathways:
Different rules, different responsibilities.
8. How to get endorsed for self-certification?
Endorsement applications are now open through the PGDB. Here's how it works:
9. What does this mean for your business day-to-day?
Potentially, faster job turnaround. If you're doing routine work that currently sits in a queue waiting for a BCA inspection, self-certification removes that bottleneck. You complete the work, you certify it, you move on.
That's good for your clients. It's good for your scheduling. And it's good for your cash flow because faster job completion means faster invoicing.
But the admin side matters. You'll need to issue a Certificate of Compliance within 10 working days, with supporting evidence. That means your job records, including photos, test results, and as-built notes, need to be captured as you go, not reconstructed after the fact.
If you're still running jobs on paper or trying to remember what you did on a job three weeks ago, that's going to be harder to manage. Having your job records in one place — photos, notes, and documents attached to each job — makes the compliance side of self-certification a lot more straightforward.
Tradify lets you run your plumbing business with every job, quote, invoice, and document in one place, so when you need to pull together a Certificate of Compliance, the evidence is already there.
10. Self-certification for plumbers and drainlayers
The self-certification scheme is a genuine win for the plumbing and drainlaying trade. It gives experienced, licensed practitioners more autonomy, reduces consent delays for clients, and aligns plumbers and drainlayers with the framework gasfitters have had for over a decade.
But the sign-off is yours. The documentation is yours. The liability, if something goes wrong, sits with you.
Get endorsed, get insured, and get your job records in order. That's the foundation for making this work well.
Start a 14-day free trial. No credit card required. No pressure. Or jump on one of our weekly 30-min live demos as we show you Tradify in action.