BASIX (Building Sustainability Index) Certificates were introduced by the NSW Government in 2004 as a control tool / mechanism to help reduce the amount of water and energy use in residential dwellings.

All new dwellings, alterations & additions with a construction value of $50,000 or more and pools and spas with a volume greater than 40kl must submit a BASIX Certificate with their Development Application (DA) or Complying Development Certificate (CDC).

By engaging the services of an accredited sustainability assessor you will have the peace of mind knowing that your new home or extension is fully compliant with the current BASIX requirements.

Browse through our website to find out exactly what BASIX is all about, when you need one, what it will mean for you and how to go about getting one.


  • ABSA Assessor Lic No: 20920
  • NatHERS Assessor Lic No: TN022551