Do you need an Energy Rating Certificate? Fill out our contact form for We provide 7-Star NatHERS and Whole of Home assessments – now required under the National Construction Code (NCC 2022) for building approval.

All of our assessors have practical and technical experince on Queensland building sites in Cairns, Townsville, Whitsundays, MacKay, and Rockhampton. Let us help you achieve optimal energy outcomes within your project scope.

Fast, accurate, and builder-friendly.
Servicing Australia-wide.

🟦 Get a free quote – fill out our contact form today.

If you're working on a new commercial building or major alteration, you’ll need to demonstrate compliance with Section J of the National Construction Code (NCC). That’s where we come in.

We provide clear, accurate Section J compliance reports for commercial and multi-residential projects, helping you meet energy efficiency requirements with minimal fuss.

Our Services Include:

✅ Deemed-to-Satisfy (DtS) Compliance Reports
Straightforward, code-based assessments for standard commercial designs.

✅ JV3 Modelling (Performance Solution)
Ideal for complex or non-standard buildings, JV3 uses thermal modelling to provide design flexibility and cost-effective alternatives to strict DtS rules.

Whether you're designing an office, warehouse, retail space, school, or mixed-use development, we’ll ensure your project ticks every box for energy compliance under the NCC.

Need a Section J Report?
We offer fast turnarounds, practical advice, and competitive pricing.

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Maximize your building’s energy efficiency with expert guidance from Sustain Co. Whether you're designing a new property or upgrading an existing one, we provide tailored solutions to reduce energy costs and improve sustainability.

How We Help:

New Building Design – Optimize insulation, glazing, HVAC, and renewable energy for top efficiency.

Retrofit Solutions – Improve insulation, heating systems, and lighting to lower energy bills.

Energy Modeling & Cost Analysis – Predict savings and ROI for energy upgrades.

Compliance & Certification – Ensure EPC, MEES, and local energy code compliance.

These reports help you allocate capital effectively when executing projects to reduce your energy demand. The ability to put a dollar value and payback period on any new additions to your homes appliance of fixtures can help you make the right decision when trying to improve your home.

Buying a home is typically the biggest and most emotional purchase of your life, so why wait till after you’ve bought it and moved in to see how comfortable it will be? Our Pre-purchase efficiency review will tell you about levels of energy and water efficiency in your potential new home. We’ll also point out possible improvements and rough costs to implement, so you’ll know exactly what you’re buying into.