Short answer
BASIX is a NSW sustainability compliance tool, while NatHERS is a national energy rating system for residential buildings.
Full answer
BASIX (Building Sustainability Index) is a mandatory planning requirement in NSW that covers energy, water and thermal comfort. NatHERS (Nationwide House Energy Rating Scheme) is a national system that rates the energy efficiency of a dwelling using a star rating from 0 to 10. In NSW, BASIX requires a NatHERS rating for thermal comfort compliance, meaning the two systems often work together.
Why this matters
Understanding the difference helps builders, designers and homeowners plan effectively. Mistaking one for the other can lead to incomplete compliance and rejected applications.
How Certified Energy can help
Our team is accredited in both BASIX and NatHERS assessments. We provide combined services that streamline compliance and give you a clear sustainability pathway.
Related regulations
Helpful resources
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