Footprints from the BOM, with defendable proxies for the gaps.
You rarely have primary data for every material on day one. Keystone calculates embodied carbon from the bill of materials you do have, fills the gaps with recognised proxies, and shows which is which, so the number is usable now and improves as real data arrives.
Interior fit-out project calculator
Start with the fit-out schedule: material, finish, furniture and equipment quantities, plus floor area. Reuse product footprints and clearly marked proxies. Aggregate a project impact total and impact per square metre, then compare design scenarios on the same boundary. Keep lifecycle stages, sources, exclusions and data gaps visible. A new successful project version or scenario uses one calculation from the shared product/project allowance. Independent verification is separately scoped.
What it does
- Carbon per batch, built up component by component from the BOM already on the record
- ecoinvent-based proxies wherever you lack accurate product or material data, clearly marked as proxy
- As a supplier returns primary data, the proxy is swapped out and the footprint tightens
- Calculated with the full EF 3.1 factor set, all 16 impact categories, across life-cycle modules such as A1–A3, A4 and C2
- Optional independent verification of the result, written back to the record
The pain: Teams delay LCA for months waiting for perfect supplier data. With transparent proxies you start now and improve, instead of stalling.
Curated proxy data, from years of practice
- Our research team curates the proxy data, work we have done for top European luxury retailers for years
- Proxies are always based on a selection of published, product-specific data, or constructed from more basic material data
- The underlying data is often ecoinvent
- For logistics carbon, we apply the GLEC transportation emission factors
From product to project, for Scope 3
Capital goods count in full the year you buy them. Keystone rolls product footprints up into a project, combining construction products and proxies, so a store, office or fit-out gets a Scope 3 figure without a bespoke study.
Analytics and benchmarks
A footprint is most useful when you can compare it. Keystone turns your results into analytics that show where you stand and where to act.
- Against your own past products and projects: track improvement year on year, and see which materials and suppliers drive the change
- Against industry peers: benchmark a product or project against anonymised statistics from comparable products, such as ranges, averages and percentiles
- No company or product names are ever disclosed; benchmarks are shown only as aggregated statistics
- Spot hotspots by component, material or supplier, and test the impact of a change before you make it
Linked, not a dead number
Embodied carbon on a record links to the calculation behind it, and that rolls into the project total. Change a material once and every level updates, with no re-entry.