NZ Government changes plumbing certification requirements for 2026
- Marketing Team
- Feb 5
- 4 min read
Self-Certification for Plumbers and Drainlayers: What’s Coming in 2026
Another important change is on the way for New Zealand’s building and construction sector. The Government is introducing a new self-certification scheme for plumbers and drainlayers, expected to come into effect in 2026.
The goal is simple: make the building process more efficient, reduce delays, and allow councils to focus their time and resources on higher-risk work — all while maintaining strong quality and accountability standards.
If you’re planning a build or renovation, here’s what you need to know.
What Is Self-Certification?
Under the proposed scheme, trusted, endorsed plumbers and drainlayers will be able to sign off certain types of low-risk plumbing and drainlaying work themselves, without needing an inspection from the building consent authority (BCA).
This doesn’t mean inspections are disappearing altogether. Instead, it allows routine work to move faster, while councils concentrate on more complex or higher-risk construction.
Self-certification is already used successfully in other parts of the building industry, and this change extends that approach to plumbing and drainlaying.
What Type of Work Can Be Self-Certified?
Only specific work will qualify for self-certification. To be eligible, the work must be:
Routine and low risk
Not complex
Carried out by a plumber or drainlayer with a self-certifying endorsement
The exact types of plumbing and drainlaying work that qualify will be clearly defined in regulations once the scheme is finalised.
If a homeowner or developer chooses to use self-certification, they’ll need to engage a plumber or drainlayer who holds this special endorsement.
How the Process Will Work
Even when self-certification is used, the building consent process remains in place.
Here’s how it will work in practice:
Building consent applications are still submitted as usual
The building consent authority (BCA) checks that:
The work qualifies for self-certification
The plans comply with the Building Code
The BCA does not inspect the self-certified plumbing or drainlaying work
Once the work is complete, the endorsed practitioner must submit a Certificate of Compliance within 10 working days
What Is a Certificate of Compliance?
The Certificate of Compliance is a formal document issued by the plumber or drainlayer who carried out (or supervised) the work.
It must:
Confirm the work complies with the approved building consent
Include supporting evidence such as:
Testing results
Photos
As-built designs
Be included as part of the Code Compliance Certificate (CCC) application
The building consent authority must accept this certificate as evidence that the plumbing or drainlaying work meets consent requirements.
Accountability and Oversight
While inspections may be reduced, accountability is not.
Key safeguards include:
Public register: Information from Certificates of Compliance will be uploaded to a public register
Audits: Certificates may be audited by the Plumbers, Gasfitters and Drainlayers Board (PGDB)
Enforcement powers: The PGDB will have disciplinary and enforcement powers if things go wrong
This ensures the system maintains high standards and protects homeowners.
Can I Still Request an Inspection?
Yes. Even once the self-certification scheme is in place, you can still choose to have plumbing and drainlaying work inspected if you prefer.
Self-certification is an option — not an obligation.
Who Can Become a Self-Certifying Practitioner?
Plumbers and drainlayers who wish to self-certify must apply for an endorsement through the Plumbers, Gasfitters and Drainlayers Board.
To qualify, endorsed practitioners must:
Meet eligibility criteria set by the PGDB, including:
Proven technical competency
Appropriate civil liability cover
Sound business practices
Be listed on a public register
Renew their endorsement every three years
Responsibilities of Endorsed Practitioners
Self-certifying plumbers and drainlayers will be responsible for:
Declaring that the work qualifies for self-certification as part of the building consent application
Ensuring the work complies with the building consent
Carrying out, assisting with, or supervising the work
Issuing a Certificate of Compliance to:
The building owner
The Plumbers, Gasfitters and Drainlayers Board
This places clear responsibility on the practitioner — giving homeowners confidence in the work being done.
What Happens Next?
The Building and Construction Sector (Self-certification by Plumbers and Drainlayers) Amendment Bill has passed its first reading and is currently with the Transport and Infrastructure Select Committee.
You can read more about the proposal and follow its progress here:
Minister’s press release (Beehive website):Bills backing skilled tradies pass first reading – Beehive.govt.nz
Full Bill and legislative progress:Building and Construction Sector (Self-certification by Plumbers and Drainlayers) Amendment Bill – parliament.nz
What This Means for Homeowners
For homeowners, this change is designed to:
Reduce inspection-related delays
Keep projects moving efficiently
Maintain strong quality controls
Provide flexibility and choice
At Wellington Building Company, we closely follow legislative changes so we can guide our clients with confidence. As these updates roll out, we’ll continue working with qualified, reputable trades to ensure every project meets the required standards — efficiently and responsibly.
If you’d like to talk about how upcoming building changes may affect your project, we’re always happy to help.
Links to more info: Read the Minister’s press release on the Beehive website.
Read the Bill and view its progress through the legislative process on the New Zealand Parliament website.
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