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What is a BASIX Certificate?

A BASIX Certificate is a document required in New South Wales (NSW), Australia, to ensure your new home or renovation meets sustainable design standards for water, energy, and thermal comfort.

Why do I need a BASIX Certificate?
You need a BASIX Certificate to lodge a development application (DA) for new residential buildings or renovations in NSW. It proves your project complies with the state’s sustainability targets.
How do I get a BASIX Certificate?
You can get a BASIX Certificate online by completing a BASIX assessment or by hiring a professional service like Eco Certificates to handle the process for you quickly and accurately.
What types of developments require a BASIX Certificate?
BASIX Certificates are required for all new homes, dual occupancies, townhouses, granny flats, and renovations over $50,000 in NSW.
How much does a BASIX Certificate cost?
The cost of a BASIX Certificate depends on the complexity of the project and the service provider. At Eco Certificates, we offer fast and affordable BASIX certification services.
How long does it take to get a BASIX Certificate?
If all necessary information is provided, you can receive your BASIX Certificate within 24–48 hours through Eco Certificates.
Can I make changes after the BASIX Certificate is issued?
Yes, but any significant changes to the design or plans may require a revised BASIX assessment and a new certificate.
Is BASIX mandatory in NSW?
Yes, the BASIX Certificate is a mandatory requirement for residential building applications across New South Wales.
Who completes the BASIX assessment?
While you can complete it yourself online, many people prefer using professionals like Eco Certificates to ensure compliance and save time.
Does a BASIX Certificate expire?
No, once issued, a BASIX Certificate doesn’t expire, but it must match the final design submitted with your DA or CDC.