BASIX Consultant Services in Australia

Save environment, cost, and get international recognition

What is BASIX?

Carbon emissions is a critical parameter in defining a corporation’s success level in its environmentally friendly operation. It is even used as a financial instrument in Carbon Credit and Carbon Offset. Carbon emissions can include various scopes, such as from manufacturer, building construction, operational stage, demolition stage, etc. It can even include upstream and downstream processes of waste, materials, and commuting of staffs and vendors.

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BASIX consultant services help ensure residential projects in New South Wales meet the state’s sustainability requirements. The Building Sustainability Index (BASIX) is part of the development application process and applies to all housing types, major renovations over $50,000, and large swimming pools. It sets minimum standards for energy efficiency, water savings, and thermal performance to reduce environmental impact. From October 2023, stricter BASIX standards also require reporting of embodied emissions from building materials. Afogreen Build guides builders, developers, and homeowners through every stage of BASIX compliance, offering expert advice and practical solutions for sustainable, regulation-ready homes.

What is BASIX?

The Building Sustainability Index (BASIX) is a New South Wales Government initiative under the Department of Planning, Housing and Infrastructure (DPHI). It is one of Australia’s most comprehensive sustainable planning measures, designed to ensure new homes use less energy and water while maintaining high thermal comfort standards.

Since its launch in 2004, BASIX has helped more than 500,000 NSW homes meet energy and water efficiency targets, saving over 340 billion litres of water and reducing 12.3 million tonnes of carbon dioxide emissions. The latest updates to the BASIX thermal performance standard further enhance comfort and affordability by lowering household energy use and costs.

Working with an experienced BASIX assessment or compliance consultant in NSW ensures your project meets these evolving sustainability benchmarks and achieves successful BASIX certification under the state’s environmental framework.

 

How does BASIX work?

BASIX is an online tool that calculates the annual energy and water consumption per person in a home or apartment building based on various inputs. In addition, BASIX sets minimum thermal performance standards for heating and cooling, which depend on the building’s design. To pass BASIX, the building must meet these thermal performance standards and achieve energy and water scores that meet or exceed the minimum targets based on factors like building type, location, and height. While the embodied carbon of the building is calculated, it currently has no minimum performance requirement.

Below is how BASIX works: 

(Source: A comprehensive guide to BASIX)

 

Core Sustainability Areas in BASIX Assessment

A. Energy

Energy efficiency is a core focus of BASIX, helping reduce energy use and carbon emissions in new residential buildings. The BASIX energy assessment evaluates factors such as heating, cooling, lighting, hot water, ventilation, pools, and renewable energy systems to measure overall performance.

From October 2023, updated BASIX energy targets are based on building type and location, a revised grid electricity factor (37% lower to reflect NSW’s cleaner energy mix), and alignment with the NCC 2022 energy efficiency standards. These updates ensure that new homes achieve stronger performance, lower carbon footprints, and reduced energy costs.

Thermal performance is central to BASIX and sustainable home design. A well-designed building envelope keeps homes cooler in summer and warmer in winter, reducing reliance on artificial heating and cooling while lowering energy costs over time.

The BASIX thermal performance section ensures each dwelling suits its local climate and minimises greenhouse gas emissions through better design and materials. Assessment can be completed using one of three methods:

– DIY Method: A simple tool for standard single houses using common materials.

– Simulation Method: A detailed analysis using NatHERS-accredited software, suitable for complex designs or multi-dwelling projects.

– Passive House Method: For homes built to the Passive House standard, assessed using PHPP software by a Certified Passive House Designer.

Each method estimates heating and cooling loads based on construction materials, insulation, glazing, and ventilation, ensuring energy-efficient and comfortable living spaces.

The BASIX water section sets clear standards to reduce potable water use in new residential developments. It evaluates water consumption and savings from fittings, fixtures, landscape design, pools, alternative water sources, and shared systems in multi-dwelling buildings.

Each project is measured against a benchmark of 90,340 litres per person per year, with targets ranging from 0% to 40% reduction depending on the climate zone. Most new developments are required to achieve at least a 40% reduction, helping conserve water resources and promote sustainable living across New South Wales.

From October 2023, BASIX introduces a materials index to measure and report the embodied emissions of building materials used in homes. This index calculates emissions in kilograms of CO₂ per person, with national benchmarks set at 10,400 kg CO₂ per person for houses and 8,800 kg CO₂ per person for units.

While no formal targets have been set yet, data collected from BASIX embodied emissions assessments will help shape future standards, supporting the transition towards low-carbon construction and more sustainable housing across New South Wales.

How BASIX Assessments Work

BASIX certification process:

  • Initial Consultation and Project Assessment

    During this initial consultation, we’ll review your project’s design and assess its potential to meet BASIX requirements. This includes evaluating the project’s energy efficiency, water usage, and thermal comfort. 

  • BASIX Assessment

    We guide you through the BASIX assessment using the BASIX tool, which estimates water usage, energy efficiency, thermal comfort, and embodied emissions. This process requires several pieces of information, including the floor area, size, location, type of windows, type of insulation, and type of hot water system installed.

  • BASIX Certificate

    Once your project meets the BASIX standards, we assist in generating the BASIX certificate, which lists sustainability commitments. This certificate must be submitted with your development application or complying development certificate.

  • Optimisation Advice

    Beyond compliance, we provide expert recommendations to optimise water efficiency, energy use, and thermal comfort to enhance your project’s sustainability.
    Partner with us for expert support at every step of the BASIX process, supporting your development is compliant and environmentally responsible. 

Why Choose Afogreen Build as Your BASIX Consultant?

Why Choose Afogreen Build as Your BASIX Consultant?

Afogreen Build provides professional BASIX consulting services that help residential and multi-residential projects meet NSW sustainability standards in energy, water, and thermal performance. Our team combines technical expertise with practical insight to deliver efficient, compliant, and value-driven outcomes.

Why Afogreen Build Stands Out:

– Proven Expertise: Years of experience across residential and commercial projects ensure precise, regulation-ready BASIX assessments.

– Tailored Solutions: Every project is analysed individually to maximise energy efficiency, water conservation, and comfort.

– Comprehensive Support: We guide you through the whole BASIX process, from initial consultation to final certification.

– Clear Communication: Complex requirements are simplified into actionable steps with consistent updates throughout the process.

– Timely Delivery: Efficient workflows and quick turnaround keep your project on schedule and within budget.

At Afogreen Build, we go beyond compliance to help you design smarter, more sustainable buildings that perform better and last longer.

Frequently Asked Questions (FAQ)

Learn more about BASIX compliance, including costs, timeframes, and legal requirements. Afogreen Build’s expert team provides clarity and guidance for a seamless certification process.

How long does it take to get BASIX certification?

The timeline for BASIX certification can vary depending on the project’s complexity. Typically, the assessment process takes a few days to a couple of weeks. For tailored guidance and faster turnaround, reach out to our ESD consultancy team to learn more or submit an inquiry.

The cost of BASIX certification depends on the size and complexity of your project. A simple residential dwelling may have a lower fee, while more significant or complex developments may require more detailed assessments. Contact us now for further info (to link to the inquiry form).

If your building design doesn’t initially meet BASIX requirements, Afogreen Build will recommend adjustments. These could involve changing aspects of the design, such as improving insulation, adding energy-efficient appliances, or altering water systems. Once adjustments are made, a new assessment will be carried out.

In New South Wales, BASIX certification is a mandatory part of the development application process for most residential buildings. Without BASIX certification, the local council cannot process your application, and your project cannot proceed. Therefore, obtaining BASIX certification is critical for the approval and progression of your building project.

A BASIX certificate is valid for three months from the issue date before it must be submitted to the council or an accredited certifier. Once the BASIX certificate is lodged with the Development Application (DA), it remains valid for the maximum life of the DA. To avoid any delays, it is recommended that you complete the BASIX certification once your building design is finalised and ready for lodgement.

Absolutely! A BASIX certification can positively impact your property value by demonstrating that your building is energy-efficient, water-conscious, and environmentally sustainable. As more buyers and investors prioritise eco-friendly homes, certified properties stand out for their comfort, lower running costs, and long-term value. Pairing your BASIX report with a NatHERS certificate can further strengthen your project’s environmental credentials and market appeal.

BASIX can apply to multi-residential projects, including apartments and townhouse developments. Each unit within the development must meet the BASIX requirements, and the overall development must also comply with the applicable regulations.

Common challenges can include:

– Complex design requirements: Some designs may require significant adjustments to meet BASIX criteria, especially when working with older buildings or complex layouts.
– Understanding energy and water efficiency requirements: The technical aspects of BASIX can sometimes be challenging to navigate without expert help.
– Achieving thermal comfort: Ensuring year-round comfort while minimising heating and cooling loads requires precise planning and tools like thermal modelling.

At Afogreen Build, we guide you through these challenges with expert advice and practical solutions.

Proposed clarifications to the SEPP indicate that if you obtained a BASIX certificate before 1 October 2023, you would not need to get a new one as long as you submit it with your development application (DA) or lodge it with your complying development certificate (CDC) application within the three-month validity period. Per the current rules, you can still revise the lodged certificate during assessment or after receiving development consent.

Revising an issued certificate is free of charge as long as it relates to the same property and project recorded on the original certificate.

When you select “Manufactured Home” as the development type for a Complying Development Certificate or development application, it will not trigger a requirement for a BASIX certificate.

The BASIX report contains information similar to that of the BASIX certificate. However, the BASIX certificate is a legal document. There is no fee to obtain a BASIX report. It is for information purposes only. It is a useful document to show to your builder, client, or architect to see whether the intended commitments are suitable before generating a BASIX certificate.

Ready to make your project more sustainable and efficient?

At Afogreen Build, we’re here to guide you through the BASIX certification process and help your building meet all the necessary sustainability standards.

Contact us today or schedule a consultation (please link to the enquiry form). Our team is ready to help you meet compliance and create a more energy-efficient, comfortable, and environmentally friendly space. Let’s build a greener future together!

Get a free consultation today!