2022 Building Code update

Last updated: 17 June 2022

MBIE is consulting on changes to the Building Code that aim to ensure new buildings better protect the safety of New Zealanders.

Updates to the Building Code

Every year, MBIE consults on changes to selected Building Code acceptable solutions and verification methods, providing an opportunity for the public and the building and construction sector to have their say on the proposed changes. MBIE continuously updates these Building Code documents to support New Zealand to deliver safe, healthy and durable buildings.


MBIE is currently consulting on acceptable solutions and verification methods for complying with the Building Code. This year the proposed changes aim to make new builds even safer and healthier for our whānau and communities.
The proposed changes include the following topics:

  • Plumbing and drainage
  • Structural stability of hollow-core floors
  • Protection from fire

Find out more information about the proposals and make a submission - mbie.govt.nz

Webinar on the 2022 update

On 5 May 2022, MBIE hosted a webinar to discuss the proposed changes and answer questions about the consultation.

Watch the 2022 Building Code Update consultation webinar recording – Structural stability of hollow-core floors and protection from fire - YouTube

Duration: 59 minutes and 22 seconds

Watch the 2022 Building Code Update consultation webinar recording – Plumbing and drainage - YouTube

Duration: 32 minutes and 55 seconds

Consultation webinar 6 May 2022 - video transcript [DOCX, 85.6 KB]

Feedback on a proposed extension of the transition period for insulation settings for new housing

In November 2021, MBIE issued the Acceptable Solution H1/AS1 Fifth Edition and Verification Method H1/VM1 Fifth Edition. These documents outline the compliance pathways to meet minimum insulation requirements for new housing set out in clause H1 Energy Efficiency of the New Zealand Building Code.

At present, both the 4th edition and the 5th edition of H1/AS1 and H1/VM1 can be used to establish compliance with clause H1 of the Building Code until 2 November this year. After this date, only the 5th edition documents will be deemed to comply with the Building Code for housing.

The changes to the insulation requirements represent an important first step for MBIE’s Building for Climate Change programme. The changes will deliver warmer, drier and healthier homes that cost significantly less to heat and will also generate carbon savings through this energy efficiency.

However the building sector is currently under significant pressure and there are concerns that more time is required to prepare for the change, and its impacts.

As a result of this MBIE in early June 2022 consulted on a proposed six month extension of the transition period for the insulation requirements in new housing. The proposed transition period will last to 1 May 2023.

This proposed extension to the transition period does not prevent people adopting the higher code standard now and that we encourage the sector to do this.

This consultation closed on 13 June 2022. We will be publishing information about the outcome soon.

This information is published by the Ministry of Business, Innovation and Employment’s Chief Executive. It is a general guide only and, if used, does not relieve any person of the obligation to consider any matter to which the information relates according to the circumstances of the particular case. Expert advice may be required in specific circumstances. Where this information relates to assisting people: