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  • If you are building or extending or adding a addition or granny flat worth more than $50,000 then you will need a BASIX certificate.

  • We need your plans so we can produce your certificate this takes 24 hours after we have received the  the plans

  • Any additions or changes to the plans we can do ( for an additional fee but we will require the drawing/CAD  files for this.

Basix Information


The Building Sustainability Index (BASIX) aims to deliver equitable, effective water and greenhouse gas reductions across the state. BASIX is one of the strongest sustainable planning measures to be undertaken in Australia.

BASIX and the planning system

An integrated part of the planning system, BASIX is implemented under the Environmental Planning and Assessment Act. BASIX applies to all residential dwelling types and is part of the development application process in NSW.

BASIX assessment

BASIX is assessed online using the BASIX assessment tool. The tool checks elements of a proposed design against sustainability targets.


BASIX reduces water and energy consumption in homes across NSW. These environmental outcomes also provide a long term financial saving for the homeowner – and a valuable contribution to the sustainable future of our communities. 

Home Energy Rating
BASIX Certificate
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