What is a Gas Safety Certificate in NZ?
Short answer
A Gas Safety Certificate is issued by a registered gasfitter after gas appliance installation, repairs, or modifications. It certifies the work complies with the Gas (Safety and Measurement) Regulations. Keep it with the property paperwork — insurers ask for it on any gas-related claim, and conveyancing lawyers request it on resale.
Key facts
- Required after most gas work — installation, alteration, certain repairs
- Issued by the registered gasfitter who did the work
- Verifies at pgdb.co.nz (Plumbers Gasfitters Drainlayers register)
- Keep on file forever
- Distinct from plumbing CoC — gas has its own
When required
New gas appliance installation. Alteration to existing gas piping. Certain repairs (anything beyond simple component swap by a competent person).
Maintenance servicing without alteration usually doesn't need a fresh certificate. The gasfitter will tell you when it does.
Why ask for it
Gas leaks kill people. Insurance won't pay out on damage from uncertified gas work. The certificate is your proof the work was done by a registered person.
Also: a missing certificate is one of the items conveyancing lawyers chase at resale. Easier to keep them as you go.
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Related questions
Sources: Gas (Safety and Measurement) Regulations 2010; PGDB — pgdb.co.nz. General information for NZ homeowners, not legal advice — building rules change and vary by council, so confirm critical details on the official source before acting. Last updated 2026-05.