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.

Please note that applications to use the transitional arrangements close on 30 September 2024.

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.

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About BASIX

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

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BASIX support materials

Information to help you use the BASIX tool, including quick reference guides and customer support options.

BASIX energy help notes

Guidance to help you complete the energy section, which examines the energy efficiency of appliances and equipment, and use of alternative energy sources.

BASIX water help notes

Guidance to help you complete the water section, which examines the water efficiency of appliances and fixtures, landscape design and use of alternative water sources.

BASIX thermal performance help notes

Guidance to help you complete the thermal performance section, which examines the design and materials used to reduce the need for artificial cooling and heating.