Independent verification for projects and products.

What we solve

You need defensible evidence, not rough estimates, and metrics that compare across products, projects and suppliers: verified data, future-proof fields as rules shift, consistent benchmarks, real circularity, and carbon actions that count.

Project verification: real estate & interiors

Independent assessment of as-installed materials in retail, office, hospitality, pop-up and experiential spaces.

• We quantify carbon, circularity, health and operational data at space and system level
• Distilled benchmarks and proxy data keep results consistent when supplier data is incomplete
• You get verified results, findings graded major, minor or observation, a CAPA plan, and a data pack for reuse

Operational sustainability: air, energy, water, waste

• Air, to the world-leading standard: real-time, sensor-based indoor air-quality verification with QA rules, alerting and triage
• Energy: metering evidence, baselines and reduction tracking, normalised by hours, area and occupancy
• Water and waste: consumption, reuse, diversion rates and downstream recycler documentation
• Landlord common-area apportioning and multi-tenant roll-ups through the Tenant First Program
• Credible carbon reduction plans with qualified offset credits for the transition

Product verification: compliance & unified truth

• Technical files for GPSR, CE and UKCA, chemical evidence for REACH and RoHS, and packaging EPR
• Certificate and COA validity, chain-of-custody and mass-balance checks
• Health declarations: green chemistry, allergen, VOC and red-list
• Optional: sync verified evidence straight back into Keystone

How project verification works

1. Scope & plan — site and scope selection, sampling plan, evidence map.
2. Collect & verify — material lists, weights, invoices, test reports, witness testing, sensors and meters as needed.
3. Quantify — carbon, circularity, health and air, using best-in-class models plus benchmark and proxy data.
4. Deliver — a verification letter, CAPA priorities, and a machine-readable pack you can reuse in Keystone or your systems via API.

Why it matters

• Be credible: defensible claims for customers, landlords and regulators
• Stop rework: one verified dataset reused across sites, retailers and filings
• Go beyond code: “compliant” becomes optimised, with quantified impact
• Scale and cost: the cost per output falls as pilots scale to a portfolio

Advisory

When you want to push to the edge: design for disassembly, internal and supplier standards, take-back and end-to-end recycling, and consumer-facing claims, all grounded in a verified dataset.