06/11/2026
Design Insight | New Zealand’s H1 Energy Efficiency Update
New changes to New Zealand’s H1 energy efficiency requirements will fully apply from 27 November 2026.
For homeowners planning to build, renovate or extend, as well as those considering townhouse developments, the updated requirements are worth understanding. While the overall energy efficiency standards remain unchanged, the new calculation methods offer greater flexibility in how a home achieves compliance.
This may create opportunities to optimise building design and construction costs, but the outcome will depend on each project’s layout, materials and performance calculations.
At SIGN Architecture, we believe H1 should be considered from the early design stage — not left until Building Consent. Planning ahead allows insulation, window proportions, orientation and budget to work together, helping achieve a better balance between compliance, cost and everyday comfort.
Contact us to explore the key changes and understand what they could mean for your next project.
SIGN Architecture
Better Spaces. Thoughtful Decisions. Lasting Outcomes.