Green Certify delivers BASIX Certificates and Reports for residential buildings across NSW. We handle projects of any size or type, provide free quotes within one business day ensure fast turnaround and guarantee client satisfaction.

About BASIX Certificate

A BASIX Certificate (Building Sustainability Index) is required in New South Wales for development applications. It confirms that a home or project meets sustainability standards by using less potable water and producing fewer greenhouse gas emissions. The certificate is issued after completing an online BASIX assessment, which evaluates water usage, energy efficiency and thermal comfort. Once all targets are met the certificate can be issued.

Purpose of BASIX

BASIX applies to new homes, renovations, multi-dwelling developments and apartments. Introduced in 2004, it ensures projects meet government-set sustainability targets. Compliance is shown in the BASIX Certificate, a condition of development consent. The scheme aims to reduce greenhouse gas emissions by up to 25% and water usage by up to 40%, lowering environmental impact and ongoing costs for occupants.

Water, Thermal Comfort and Energy

Water Efficiency: New houses and townhouses use at least 40% less water than standard homes, while apartments typically save 30–40%, supported by rated appliances and rainwater tanks for gardens, laundry and sometimes pools.

Thermal Comfort: NatHERS evaluates summer and winter performance using building simulations considering orientation, shading, materials and geometry. Compliance can be achieved by adjusting walls, insulation, windows or colours with certifiers reviewing commitments.

Energy Efficiency: Efficient appliances, lighting, water heaters and sometimes solar panels reduce energy use by 30–40%. Thermal comfort further decreases heating and cooling demands.

The BASIX certificate combines all sustainability requirements into one document, guiding architects and builders and providing a checklist for certifiers. Green Certify assists clients with accredited thermal simulations and practical advice.