H1 Energy Efficiency Modelling

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C3 Building Compliance provides H1 assessments, calculations, and modelling for homeowners, builders, designers, and councils needing to demonstrate compliance with the New Zealand Building Code.

Glazing, insulation, orientation, and thermal performance all affect the outcome, and the right pathway depends on the project. We work out whether a straightforward calculation will do or whether detailed modelling is needed, then produce council-ready documentation to support the consent application.

Our focus is buildable, cost-aware compliance, sound reporting without over-engineering the solution or the paperwork.

• H1 assessments and reports — council-ready documentation for Building Consent applications
• Modelling and calculations — across both calculation and modelling pathways, matched to project complexity
• Design guidance — balancing glazing, insulation, and thermal performance against cost
• Technical advice — clear input to help consents move efficiently

Talk to us about your project.