BU705 Complying with H1 - all housing, and other buildings up to 300 m² | Building CodeHub

Resource detail

BU705 Complying with H1 - all housing, and other buildings up to 300 m²

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Abbreviation: BU705(2026)
Valid from: 21/07/2026

Information provider: BRANZ Limited,
Information type: BRANZ Bulletin,
Format: PDF,

Description

The rules for demonstrating H1 Energy Efficiency compliance are changing. From 27 November 2026, anyone using H1/AS1 and/or H1/VM1 in a building consent application must use the 6th editions – the 5th edition amendment 1 will no longer be accepted.

This updated bulletin explains the two compliance pathways – the calculation method and the modelling method – and outlines thermal performance requirements for floors, walls, roofs, windows and skylights across New Zealand's six climate zones. It also covers key changes, including the removal of the schedule method and a revised wall framing fraction.

Scope

This Bulletin includes:

Introduction
Thermal Performance requirements
- H1/AS1 - The calculation method
- H1/VM1 - The modelling method
Floors
Walls
Roofs
Windows, doors, skylights and curtain walling
Resources

For assistance with locating previous versions, please contact the information provider.

Notes/comments

This bulletin updates and replaces BU676 Complying with H1 – housing, and buildings up to 300 m²

View on Information Provider website

For assistance with locating previous versions, please contact the information provider.

This bulletin updates and replaces BU676 Complying with H1 – housing, and buildings up to 300 m²

This resource is not cited by any other resources.

BU705 Complying with H1 - all housing, and other buildings up to 300 m²

This document is not CITED BY any other resources:

BU705 Complying with H1 - all housing, and other buildings up to 300 m²

Description

The rules for demonstrating H1 Energy Efficiency compliance are changing. From 27 November 2026, anyone using H1/AS1 and/or H1/VM1 in a building consent application must use the 6th editions – the 5th edition amendment 1 will no longer be accepted.

This updated bulletin explains the two compliance pathways – the calculation method and the modelling method – and outlines thermal performance requirements for floors, walls, roofs, windows and skylights across New Zealand's six climate zones. It also covers key changes, including the removal of the schedule method and a revised wall framing fraction.

View on Information Provider website

BU705 Complying with H1 - all housing, and other buildings up to 300 m²

Description

The rules for demonstrating H1 Energy Efficiency compliance are changing. From 27 November 2026, anyone using H1/AS1 and/or H1/VM1 in a building consent application must use the 6th editions – the 5th edition amendment 1 will no longer be accepted.

This updated bulletin explains the two compliance pathways – the calculation method and the modelling method – and outlines thermal performance requirements for floors, walls, roofs, windows and skylights across New Zealand's six climate zones. It also covers key changes, including the removal of the schedule method and a revised wall framing fraction.

View on Information Provider website

This resource does not cite any other resources.

BU705 Complying with H1 - all housing, and other buildings up to 300 m²

This resource does not CITE any other resources.

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