Plumbers, Gasfitters, and Drainlayers Act 2006

The Plumbers, Gasfitters, and Drainlayers Act 2006 is the main New Zealand law that regulates who can do sanitary plumbing, gasfitting and drainlaying work, how they are registered and licensed, and how the Plumbers, Gasfitters, and Drainlayers Board oversees the trade.

For a business owner, the practical point is simple: if your business offers this kind of work, you need to make sure the right person is doing it, under the right authority, with the right supervision and records. The Act also creates offences, disciplinary processes, a public register, fee and levy powers, and newer rules around self-certification and self-contained motor vehicle certification.

This Act is aimed at people and businesses involved in sanitary plumbing, gasfitting and drainlaying services. It also regulates the Board, the public register, employer licences for gasfitting, disciplinary processes, and newer self-certification and self-contained motor vehicle certification functions.

Not every person touching a site will need to be registered under this Act. The legislation itself recognises exemptions, including for trainees and some supervised work, and it includes specific exemptions for some sanitary plumbing, gasfitting and drainlaying situations. There is also a provision that a body corporate does not breach the restriction if the work is actually done by an authorised natural person. That means the legal focus stays on the person who physically performs the regulated work.

For ordinary businesses, the key question is not just what service you sell, but what work is actually being done, by whom, and under what authority.

Most compliance problems under this Act start with ordinary business decisions: taking on a job, sending the wrong worker to site, assuming supervision is informal, or failing to check whether a licence is current. The Act restricts doing or assisting with sanitary plumbing, gasfitting and drainlaying, then builds out exemptions, licensing and enforcement around those restrictions.

Trigger points often arise when you hire a new tradesperson, use an apprentice, subcontract overflow work, move into a new service line, or start offering sign-off or self-certification services. Another trigger point is when your business advertises work that can only legally be done by properly authorised people. If your systems do not clearly match jobs to authorised workers, you can create risk before the work even starts.

Recent additions around records of work and self-certification make it even more important to know which jobs need extra paperwork and who is responsible for producing it.

The Act creates a practical compliance framework. First, it restricts who may do or assist with sanitary plumbing, gasfitting and drainlaying. Secondly, it requires registration and practising licences under Part 2, with terms and conditions possible on those authorities. Thirdly, it creates a public register and duties to keep details current, including changes of address and name.

The Act also supports supervision pathways, limited certificates for trainees, employer licences for gasfitting, competence reviews, cancellation and suspension powers, and disciplinary processes. It includes offences for breaching work restrictions, falsely claiming status, and failing to comply with some notices and conditions. It also allows infringement offences to be prescribed by regulation.

For some plumbing and drainlaying work, the Act now also deals with self-certification endorsements, certificates of compliance, public register information and audit powers.

Example one: a plumbing company wins a bathroom renovation and sends a junior worker to do most of the regulated work without checking whether the worker is covered by a valid trainee or supervision arrangement. The business risk is not just workmanship. It may be carrying out restricted work outside the Act's permitted pathways.

Example two: a gasfitting business grows quickly and uses a company brand to market services across several regions. The company assumes that because it is the contracting party, individual licensing is less important. The Act points the other way. The company structure does not replace the need for authorised natural persons to actually do the work.

Example three: a drainlayer starts using a self-certification pathway for eligible work. That can reduce friction, but it also creates audit exposure. If the endorsement, certificate content or supporting documents are not right, the business may face compliance issues later.

This Act is easier to comply with when your paperwork is organised. The legislation refers to records of work for prescribed sanitary plumbing or drainlaying, certificates of compliance for self-certifiable work, register information, forms prescribed by notice, and notices to supply information or documents during investigations.

For a small business, good records do two jobs. They help you prove that the right person did the work lawfully, and they help you respond quickly if a customer complaint, Board inquiry or audit arises. Weak records can turn a manageable issue into a disciplinary or enforcement problem.

Your records should be easy to retrieve by job, worker and date. If you supervise trainees or assistants, the file should show who supervised, what authority they held, and what work was done under that arrangement.

The Act gives the Board broad administrative powers that matter commercially. The Board may prescribe fees for applications, renewals, endorsements, register changes, certificates, exemptions and other matters connected with its functions. It may also impose a disciplinary and prosecution levy on registered persons, and an endorsement levy on self-certification endorsed plumbers and drainlayers.

These amounts are not fixed in the Act itself. They are set by notice, and the Act says those notices are secondary legislation and must not come into force earlier than the minimum period stated in the Act. The Board may also prescribe forms and require their use.

For businesses, this means compliance costs can include more than licence renewals. You should budget for fees, levies, possible audit activity, and the administrative time needed to keep your status current and your documents in order.

The Act has both disciplinary and offence pathways. Complaints can be investigated, the Board can hold hearings, and disciplinary powers can be exercised against people covered by the disciplinary regime. The Act also includes offences such as false declarations and representations, claiming to be licensed, registered or endorsed when not entitled, and engaging in work in breach of the core restrictions. Infringement offences may also be prescribed by regulation.

The Board and investigators have powers around information gathering and inspection, subject to the Act's procedures. There are also appeal rights under Part 4. For a business owner, the practical lesson is to act early. Do not ignore a complaint, a request for documents, or a notice affecting a licence or registration. Early fact gathering, file review and advice can make a major difference.

If your business depends on one or two key licence holders, even a temporary suspension or restriction can disrupt trading, staffing and customer commitments.

This is a principal Act that is in force. It received assent on 4 December 2006. Some provisions came into force immediately after assent, and the rest came into force on 1 April 2010 under the commencement order noted in the legislation. The version used here is the latest version as at 30 June 2026.

The Act has been amended over time, including changes linked to self-contained motor vehicles, self-certification by plumbers and drainlayers, and small stand-alone dwellings. It also interacts with regulations, Board notices and other legislation such as the Building Act 2004 and Gas Act 1992 through definitions and related compliance settings.

Because the Act works together with regulations and Board notices, businesses should check the current legal settings before changing services, onboarding staff, or relying on a specific exemption or certification pathway.