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Basix house


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.

Maintenance to the BASIX website will occur tonight (Monday 16 December) between 9 and 9:30pm. Please ensure that you save your projects and logout before 9pm. We apologise for any inconvenience caused.

Welcome to the new BASIX website!  BASIX is one of Australia’s strongest sustainable planning measures. Use the  online BASIX assessment tool to assess the energy and water use and thermal comfort of your residential development.

BASIX Login or Register

Login or register to use the BASIX assessment tool, create a project, update your project or revise a Certificate.


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

BASIX How To and FAQs

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


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.


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.

Thermal Comfort

The thermal comfort 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.

BASIX eNews and Announcements 

November 2019

Download the BASIX Update Webinar


November 2019

The BASIX Annual Snapshot for 2017/18 is now available on the NSW Planning Portal


November 2019

BASIX Webinar November 14 from 12-1:30pm


September 2019

 Sustainable House Day on Sunday 15th September 2019                                                                                                                                                                                                               


July 2019 

Large boarding houses - alternative assessment process


June 2019

Renovate or Rebuild


April 2019

We have updated our terms and Conditions