BASIX Certificate Consultant, Sydney

BASIX Certificates for Sydney Councils

BASIX applies the same way across every council in Greater Sydney -- from the City of Sydney to Blacktown, Sutherland Shire to the Northern Beaches -- because it's a NSW Government requirement administered through the state's Planning Portal, not set by individual councils. What changes from project to project isn't the rules, it's the plans: a terrace renovation in the Inner West faces different constraints than a new knockdown-rebuild in Western Sydney, and we work with both regularly.

An accredited assessor enters your project details -- location, floor area, orientation, insulation, glazing, appliances and water fixtures -- into the BASIX tool, which calculates whether your design meets the required targets. If it does, the certificate is issued. If it doesn't, we'll tell you exactly what to change to get there.

Who Needs a BASIX Certificate in Sydney?

• New homes -- single-storey, double-storey, knockdown-rebuilds and custom builds, common across established Sydney suburbs
• Granny flats and secondary dwellings -- a fast-growing project type across Sydney given local housing pressure, required over 60m²
• Major renovations -- alterations and additions valued over $50,000, from terrace extensions to full rebuilds
• Duplexes, townhouses and multi-dwelling developments -- increasingly common across Sydney's middle-ring suburbs

How We Deliver It

Send us your architectural drawings and we'll respond with a same-day quote, wherever in Sydney your project sits. Our accredited assessors then run the assessment and issue your certificate, typically within 48 hours of receiving complete plans -- with urgent same-day options available when your DA deadline is tight.

Why Work With Thermal Nest

We're accredited to operate in every Australian state and territory, so whether your project is in Sydney, Melbourne, Brisbane, Perth or regional Australia, you get the same turnaround and the same standard of report. Across 500+ projects, every certificate and report we've issued has been accepted on first submission -- no rejections, no rounds of council back-and-forth eating into your build timeline.

We also work with your design team from early in the process rather than only stepping in once drawings are locked. Catching a compliance issue at concept stage costs a conversation; catching it after a DA is lodged costs a redesign. That's the gap we're built to close.