Introduced as part
of the NSW planning system, BASIX (the Building Sustainability
Index), is a web-based planning tool that measures the potential
performance of new residential dwellings against sustainability
BASIX ensures each dwelling design meets the NSW Government's targets of:
up to 40% reduction in mains potable water consumption and
25% reduction in greenhouse gas emissions, compared with the average home.
The greenhouse target will increase to 40% from July 2006.
Each development application for a residential dwelling must be submitted with a BASIX Certificate. A Certificate is issued once a BASIX assessment has been satisfactorily completed, using the on-line tool.
The building applicant, (e.g. architect, builder, owner builder) is responsible for completing the assessment, ensuring the BASIX commitments are clearly marked on the plans, and submitting the BASIX Certificate with the development application.
The sustainability indices are:
BASIX is a NSW Government planning requirement that means every new house, townhouse, villa or unit block built in NSW must be designed to use less energy and water.
operates entirely on-line at:
BASIX sets targets on the NSW average:
up to a 40% reduction in water consumption and a 25% reduction in greenhouse gas emissions.
in order to comply with BASIX, every development application for a new home must be submitted to Council with a BASIX Certificate.
To get a BASIX Certificate, the building designer enters the house design data into the BASIX assessment tool, which then calculates whether the design meets the reduction targets. Once the design complies, a Certificate can be printed.
Every year, on average, each person in NSW uses:
90,340 litres of water (the average backyard pool is 45,000 litres)
3,292kg of CO2 (that’s more than enough greenhouse gas emissions to fill the average family home three times over)
Over 10 years, BASIX will save:
287 billion litres of water (equivalent to 15% of a full Warragamba Dam)
million tonnes of greenhouse gas emissions (equal to taking 2.6 million cars off the road).
Currently, DIPNR is monitoring a sample of BASIX compliant home designs across Sydney that are now in the development approval and construction process. Of note:
Every home had a rainwater tank (average size is 4,000 litres), the majority of which will be plumbed to the toilet and laundry
1 in 4 of these homes will have a solar hot water system – maximising their savings on energy bills and massively reducing their greenhouse gas emissions.
Over 40% of the homes have included performance glass and double glazing to ensure their home is more comfortable and cheaper to run – this has been a huge boost to the glazing and window industry.
* BASIX only applies to residential dwellings