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Development and Assessment

BASIX

If you're building a new home, undertaking renovations of $50,000 or more, or installing a pool or spa of more than 40,000 litres, you will need a BASIX certificate.

The BASIX standards cover water, energy use and thermal performance. They apply to all new residential developments, as well as renovations more than $50,000. Increases to the BASIX standards came into effect on 1 October 2023.

To access the BASIX tool, users need to log in using their applicant or developer NSW Planning Portal account or register for an account.

Access the BASIX tool

Due to the large number of enquiries we’re receiving, we might take a little longer to respond than usual. Please refer to our BASIX support materials page for further assistance, and to see a list of updates to the tool to fix technical issues. 

Increase to BASIX standards

The NSW Government has committed to achieving net zero emissions by 2050.

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How BASIX standards apply

Information about creating and revising certificates and limited transitional arrangements in place.

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BASIX support materials

Learn more to get you started in creating or revising a BASIX Certificate, or to troubleshoot.

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Energy

The energy section of the BASIX assessment examines the energy efficiency of the appliances and equipment, and the use of alternative energy sources in the development.

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Water

The water section of the BASIX assessment examines the water efficiency of the appliances and fixtures, the design of the landscaping and the use of alternative water sources in the development.

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Thermal performance

The thermal performance section of the BASIX assessment examines the design and materials used in the building to reduce the need for artificial cooling and heating to keep the home comfortable.

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Examples of excellence in residential building

Inspiring case studies for sustainable living.

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About BASIX

Learn all about BASIX, how it applies to your development and how it is helping our environment.

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BASIX news and announcements

3 October 2023

The enhanced BASIX tool is here

The enhanced BASIX tool is now live! All users can now access the tool via the NSW Planning Portal.

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5 May 2023

BASIX tool enhancements mid-2023

The BASIX tool is being enhanced and is moving to the NSW Planning Portal in mid-2023.

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18 February 2022

Minor updates to the BASIX Tool

We have made a number of changes to BASIX.

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