How BXG Helps Clients Save Tens of Thousands on NZ Building Code H1 Compliance

Meeting the requirements of the New Zealand Building Code Clause H1 – Energy Efficiency can be one of the most complex and costly aspects of designing and constructing buildings today. Whether you're a developer, architect, or builder, H1 compliance—especially under the updated regulations—often means incorporating expensive materials, high-spec insulation, or design compromises that significantly inflate budgets.

But that’s where BXG steps in—and makes a real difference.

Smarter Compliance, Not Just More Expensive

Most building designs are assessed against the H1 code using the schedule method, which assumes default insulation values and prescriptive requirements. While simple, this method often forces over-specification —like expensive glazing or too much insulation— to tick the compliance box.

BXG offers an alternative: performance-based compliance modelling.

By using advanced energy modelling and simulation tools, BXG evaluates the entire building as a system—windows, walls, roof, floors, thermal mass, orientation, and even occupancy patterns. This holistic approach often uncovers more cost-effective pathways to compliance that would be completely invisible under the schedule method.

Real Savings for Real Projects

Here’s how BXG helps unlock savings:

Optimized Glazing: Many clients are told they need costly glazing to comply. BXG modelling often proves that correctly specified glazing, with the right frame or placement, is fully compliant.
Better Material Choices: Instead of defaulting to the most expensive insulation or cladding, BXG identifies fit-for-purpose alternatives that meet performance targets at a fraction of the cost.
Avoiding Over-Engineering: BXG’s performance modelling shows precisely what’s needed—nothing more, nothing less—which prevents unnecessary overspending on building construction elements.
Retaining Design Flexibility: BXG helps clients keep the aesthetic and spatial intent of a project intact, avoiding costly redesigns just to meet H1.

For a typical medium-sized residential or commercial project, this can mean tens of thousands of dollar in savings—without compromising comfort, energy efficiency, or compliance.

Ahead of the Curve, Without Blowing the Budget

With H1 becoming more stringent and performance expectations rising, clients need smarter solutions—not just bigger budgets. BXG’s expertise in energy modelling, building science, and code compliance turns a regulatory burden into an opportunity to build better and save more.

If you're planning a project and worried about the cost of H1 compliance, talk to us first. BXG could save money, make your build smarter, faster, and ensure your most valuable asset is future-proofed. Alex@bxg.co.nz