08/07/2026
Here is a common MYTH in NZ construction:
"If building work doesn't require a building consent, anyone can do it."
Not necessarily.
Building consent and Restricted Building Work (RBW) are two different concepts.
Some building work is exempt from requiring a building consent. However, that does not automatically remove the requirements relating to Restricted Building Work.
Where work is classified as Restricted Building Work, it generally must still be carried out or supervised by a Licensed Building Practitioner (LBP), unless a specific exemption under the Building Act applies.
A good example is the new 70 m² granny flat exemption.
Many people assume that because these small standalone dwellings can now be built without a building consent, anyone can build them.
That isn't the case.
To qualify for the exemption, the work must still be carried out or supervised by appropriately licensed professionals (including LBPs for Restricted Building Work, and licensed plumbers, drainlayers, gasfitters and electrical workers where applicable), and the building must still comply with the New Zealand Building Code.
So before starting any project, ask two separate questions:
Does this work require a building consent?
If it doesn't, who is legally permitted to carry out the work?
They're related questions, but they are not the same question.
If someone tells you:
"You don't need a building consent."
Don't stop there. Ask: "What legislation or guidance supports that advice?"
For anyone wanting to understand exempt building work better, MBIE has an excellent guide: search for Building work that does not require a building consent.