A Mirvac project team sends through a sustainability requirement: they need the emissions behind your work, or the materials you supply, for their net positive by 2030 target. Two questions follow: what counts, and how do you give them something that holds up?
About this guide
CO2 Lab is not affiliated with, endorsed by, or partnered with Mirvac. This guide explains their publicly stated climate targets and supplier engagement, as at October 2026, to help suppliers respond, and is based on the sources linked below. All trademarks are the property of their respective owners.
Why Mirvac is asking
Mirvac is already net positive on Scope 1 and 2, nine years ahead of its target, and is now striving for net positive Scope 1, 2 and 3 by 2030. Scope 3 is what it cannot control but can influence: the embodied carbon in the materials it buys, waste, and the energy its tenants and residents use. So Mirvac works closely with suppliers to design and buy lower-carbon materials, including a target of 25% recycled content in major materials by 2030. Contractor and materials data is central to that work.
What Mirvac asks, by supplier type
| If you are | What they'll want from you |
|---|---|
| A materials supplier (concrete, steel) | Product-level emissions and recycled content, ideally from an EPD |
| A contractor on a project | The emissions of the work you perform, fuel and plant first |
| A tenant or fit-out partner | Energy use and the emissions of works within the space |
Embodied carbon is the number they want
Net positive across all scopes means the value chain carries the target, and in property the biggest lever is embodied carbon, the emissions locked into materials when they are made. Concrete and steel dominate it. So a materials supplier faces the most specific ask: the emissions per unit of product, and increasingly its recycled content. A contractor is asked for the emissions of the work performed, fuel and plant first. Either way it is the same discipline as any customer's data request: a number with the method behind it.
“Net positive sets a higher bar than net zero, and it is met in the supply chain. A figure you can trace to its method is the one that survives into Mirvac's account.”
Why your number matters to MirvacHow to respond
A first response to a Mirvac request
- Build Scope 1 and 2 from your fuel, plant and energy records
- For materials, work out emissions per unit of product, and recycled content
- Apply the current NGA Factors and recognised materials data, method shown
- Flag what is measured and what is estimated
- Keep the evidence together, so a product-level figure is defensible
Turn the Mirvac request into a traceable number. What our AI Sustainability Analyst gives a contractor or supplier:
Answer the Scope 3 request with something traceable
Our AI Sustainability Analyst builds your footprint from your own fuel, plant and energy records, with the method and evidence behind every figure, ready to share.
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