Every new gas installation in New Zealand has to be certified by a licensed gasfitter. What that paperwork actually is, when you need it, and why it matters when you sell or rent.
Most homeowners meet gas certification for the first time at an awkward moment — a lawyer asks for paperwork mid-sale, or a property manager wants proof before a tenancy starts. It is a simple thing once you know what it is, so here is the plain version.
Gasfitting is restricted work
You cannot legally do your own gasfitting in New Zealand. Unlike some minor plumbing, where a homeowner is allowed to change a tap washer, gas work is restricted to PGDB-licensed tradespeople. That covers connecting a hob, installing a continuous-flow water heater, running a new gas line, or fitting a bayonet point for a heater or BBQ.
The reason is the consequence of getting it wrong. Bad plumbing causes damage; bad gasfitting causes fires and carbon monoxide.
What the certificate actually is
When a licensed gasfitter carries out gas work, they certify it. In practice that means a Certificate of Compliance — a document stating the work was done to the standard required under the Gas (Safety and Measurement) Regulations 2010, signed by the gasfitter who did it and holds the licence for it.
Two things people get wrong about it:
- It attaches to the work, not the house. A certificate covers the specific installation the gasfitter carried out on that date. It is not a general warrant of fitness for every gas appliance on the property.
- It comes from the person who did the job. The gasfitter who installed the appliance is the one who certifies it. It is not a separate inspection you book afterwards from someone else.
To be clear about how that applies here: Pipe Down issues certificates for gas work Tony installs. He does not offer standalone inspection or certification of somebody else's existing installation.
When you need one
- New gas appliance installed — hob, oven, continuous-flow hot water, gas heater.
- A new connection or gas line — bringing LPG or reticulated gas to a new point.
- An alteration to existing pipework — moving a hob during a kitchen renovation, relocating a bayonet.
A like-for-like appliance swap still counts as gas work. If gas is being disconnected and reconnected, a licensed gasfitter does it and certifies it.
Why it matters later
The certificate matters at three moments:
- Selling. Purchasers' lawyers routinely ask for documentation on gas and electrical work. Missing paperwork on a recent install turns into a delay, a price chip, or a condition on the agreement.
- Renting. Property managers want evidence that gas appliances in a tenancy were installed by a licensed tradesperson. It is a basic risk question for them.
- Insurance. After a fire or a gas incident, insurers ask who did the work and whether it was certified. An uncertified DIY or unlicensed install is exactly the fact pattern that causes a claim to be argued.
Keep it somewhere sensible
More often than a missing certificate, the problem is a certificate nobody can find three years later. When the gasfitter hands it over, put a copy with the house file and email yourself a scan. That saves chasing it during a sale.
The Kapiti context
Most of the Kapiti Coast runs on LPG bottles rather than reticulated natural gas, which is piped through much of the Hutt Valley. Certification requirements are the same either way — the gas source does not change whether the work needs a licensed gasfitter and a certificate.
Tony holds both PGDB licences, plumbing and gasfitting, and issues the compliance certificate on completion of the gas work he installs — hot water, hobs, bayonets and LPG connections across Paraparaumu, Waikanae and the wider coast. If you are planning a kitchen renovation or a hot water replacement and want the paperwork right the first time, get a quote or call 021 198 3113.