Concurrent version: Effective on 27 November 2025
Verification Method H1/VM1 Sixth Edition provides a compliance pathway for meeting some of the energy efficiency requirements of Clause H1 of the New Zealand Building Code for all housing, and other buildings up to 300 m². Specifically, the document covers provisions for the building thermal envelope, which includes the modelling method.
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:
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