EnviroSustain is a Building Ecology business that improves comfort, lowers energy bills and reduces carbon emissions in houses, offices and industrial buildings. This assists households and businesses to lower their operating costs by decreasing resource consumption, waste and pollution, whilst improving environmental indicators.

EnviroSustain has performed Home Energy Energy and Water Ratings for the NSW government and conducts Home and Office Sustainability Audits.

Its principal is Mr John Shiel BE(Civ.) MEngSc(Struct., Fndn.), MAppSc(Info. Sc.), PhD(Eng) in adapting homes for climate change and scarce resource scenarios.