A GPT development or asset team sends through a sustainability requirement: they need the emissions behind your work, or the materials you supply, for their Net Zero Carbon Buildings Commitment. 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 The GPT Group. This guide explains their publicly stated climate commitments 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 GPT is asking
GPT's owned and managed building operations are already carbon neutral, so its remaining emissions sit in the value chain. Under the Net Zero Carbon Buildings Commitment, GPT aims to maximise embodied carbon reductions on new developments and major renovations by 2030, and it works to drive its supply chain to improve its emissions profiles while supporting tenants. The most material line is embodied carbon, the emissions in the materials a building is made from, so contractor and materials data is central to the commitment.
What GPT asks, by supplier type
| If you are | What they'll want from you |
|---|---|
| A materials supplier (concrete, steel) | Product-level embodied-carbon data, ideally from an EPD |
| A contractor on a development | 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
With operations already carbon neutral, GPT's biggest remaining lever is embodied carbon, the emissions locked into materials when they are made, and concrete and steel dominate it. So a materials supplier faces the most specific ask: the emissions per unit of product. A contractor is asked for the emissions of the work performed, which is fuel and plant first. Either way it is the same discipline as any customer's data request: a number with the method behind it.
“With operations already neutral, the value chain is where the work is. A figure you can trace to its method is the one that survives into GPT's account.”
Why your number matters to GPTHow to respond
A first response to a GPT request
- Build Scope 1 and 2 from your fuel, plant and energy records
- For materials, work out emissions per unit of product supplied
- 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 GPT 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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