What is a BASIX Certificate?

A BASIX Certificate (Building Sustainability Index) is a mandatory requirement in New South Wales (NSW) for most residential building projects. It is part of the NSW Government’s initiative to ensure homes are designed and built to be energy and water-efficient, reducing their environmental impact.

What is a BASIX Certificate?

A BASIX Certificate demonstrates compliance with sustainability targets in three key areas:

1. Energy Efficiency: Ensures the home uses less energy by focusing on insulation, natural lighting, and efficient appliances.

2. Water Efficiency: Promotes water-saving measures like rainwater tanks, efficient fixtures, and native landscaping.

3. Thermal Comfort: Ensures the home design optimizes temperature control with minimal reliance on artificial heating or cooling.

You obtain the certificate by entering details about your proposed design into the online BASIX assessment tool. The system calculates whether the design meets sustainability benchmarks.

Do You Need a BASIX Certificate?

You need a BASIX Certificate if your project involves:

• Building a new residential dwelling, such as a house, townhouse, apartment, or granny flat.

• Alterations or additions to existing homes where the cost exceeds $50,000.

• Swimming pools or spas with a water capacity of 40,000 liters or more.

When Do You Not Need a BASIX Certificate?

• If your project is minor and doesn’t meet the cost or water usage thresholds.

• For non-residential buildings.

How to Get a BASIX Certificate

1. Engage a qualified Energy Efficiency Consultant who can input details of your project (e.g., site location, size, materials, water and energy systems) to generate a Certificate.

2. Adjust your plans to meet the required targets if necessary.

3. Once compliant, you can generate and pay for the BASIX Certificate.

This certificate must be included in your Development Application (DA) or Complying Development Certificate (CDC).

If you're unsure whether your project requires a BASIX Certificate, we can help clarify based on your specific circumstances.