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The purpose of this guide is to provide an overview of how the BASIX engine works to estimate energy and water consumption in houses and apartments, and how these outputs can be used to inform design decisions.

This Policy is State Environmental Planning Policy (Sustainable Buildings) 2022. (NSW legislation.)

The Nationwide House Energy Rating Scheme, or NatHERS, is being expanded to include Whole of Home assessments and ratings to support the proposed National Construction Code energy efficiency requirements for residential buildings in 2022; the changes will help households improve a home's energy efficiency and reduce energy use, which provides a range of benefits including lower energy bills, improved comfort and health for occupants, and reduced carbon emissions.