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Energy efficiency requirements

All new homes and some renovations, alterations and additions must comply with the energy efficiency requirements of the Building Code of Australia (BCA) Volume Two. These requirements aim to reduce the environmental impacts of energy consumption and water usage. They include a wide range of factors, such as insulation, external glazing, sealing, services and ventilation.

There are several options for complying with the energy efficiency requirements of the BCA, including:

  • meeting a 6-star energy rating along with certain prescriptive BCA requirements, such as sealing and services
  • following all of the prescriptive BCA requirements
  • developing another solution by engaging an expert in energy efficiency.

Six-star standard

Under the Nationwide House Energy Rating Scheme (NatHERS), houses are given a star rating based on the energy efficiency of their design. The rating considers many factors, including the building envelope (the roof, walls, floor and windows), the orientation and type of glazing.

For more information

The following websites have useful advice on energy efficient homes and sustainable living: