Most homes just comply. We assess homes that perform.
A higher NatHERS star rating is not just a number on a certificate. It is a measurable commitment to year-round comfort, lower running costs, and a home that holds its value for decades to come.
Graham Energy specialises in energy ratings and thermal performance consulting that go well beyond the minimum. We work with homeowners, architects, and builders across Australia to model, optimise, and certify genuinely efficient homes, not just technically compliant.
The benefits of a superior energy rating are concrete:
- Higher comfort: stable internal temperatures in every season without over-reliance on heating and cooling systems
- Lower energy bills: reduced demand for mechanical conditioning translates directly to household savings
- Stronger resale value: research by the Real Estate Institute of Australia shows energy-efficient homes achieve up to 10% higher sale prices
- Access to green finance: Bank Australia’s Clean Energy Home Loan and Commonwealth Bank’s Green Home Offer both reward high-performing homes with preferential interest rates
- Lower carbon impact: a well-modelled home reduces lifecycle emissions significantly compared to a minimum-compliance build
Australia’s NatHERS scheme rates homes on a scale of zero to ten stars. We consistently deliver ratings that exceed the 7-star minimum, because a home that merely complies is a missed opportunity.
