Energy efficiency requirements

When building a new home you must comply with the energy efficiency requirements of the National Construction Code Volume Two. These requirements aim to reduce the environmental impacts of buildings by reducing the amount of energy consumed.

There are several options for complying with the energy efficiency requirements with the most common option being an assessment under the Nationwide House Energy Rating Scheme (NatHERS).

7-star standard & Whole-of-home

From 1 May 2024, homes will be required to achieve 7-stars and a whole-of-home rating not less than 60 under the NatHERS option.

A higher star and whole-of-home rating means the building is more energy efficient.

To learn more, watch the NatHERS explanation video.

It is recommended to use an NatHERS accredited assessor to prepare an energy rating report to submit as part of a building permit application.

Existing homes

If you are planning to extend or substantially renovate your home (e.g. more than 50 per cent) you may need to comply with the current energy efficiency requirements. This is a complicated area as it depends on a variety of factors. It is best to consult with a registered building surveyor to ascertain the extent of compliance required.

You may be interested in knowing how your existing home is currently performing. A Residential Efficiency Scorecard assessment can help understand how your existing home is performing. A Scorecard assessor or NatHERS assessor can provide you with advice on how to achieve compliance for your extension or renovation project.

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