BREEAM Mat 01 — Environmental Impacts from Construction Products
How BREEAM Mat 01 (environmental impacts from construction products) is assessed, the evidence your assessor needs and how to secure the credits early. Fixed-fe
BREEAM Mat 01: environmental impacts from construction products
Mat 01 rewards using life cycle assessment (LCA) to measure and reduce the environmental impact of the building's materials, with more credits for options appraisal early in design.
Get a fixed-fee quote or book a call with an assessor. We reply the same working day with the scheme, timeline and fee for your project.
What Mat 01 assesses and the evidence needed
| Requirement | Typical evidence |
|---|---|
| Superstructure LCA and options appraisal | LCA tool output and appraisal report |
| Substructure and hard landscaping options | Design option comparison |
| Third-party verification where targeted | Verifier statement |
Exact criteria and credit numbers depend on the scheme and manual version your project is registered under. Your assessor confirms them at pre-assessment.
How to secure Mat 01 without extra cost
- Agree the target at pre-assessment, before RIBA Stage 2.
- Give the responsible designer or contractor a clear evidence list.
- Check the evidence at design stage so nothing is lost at post-construction review.
Related guides
Frequently Asked Questions
What is BREEAM Mat 01?
The credit for assessing and reducing the life cycle environmental impacts of construction products using an approved LCA tool.
How does Mat 01 relate to embodied carbon?
The LCA used for Mat 01 measures embodied carbon, so the same study supports both BREEAM and wider net zero reporting.
Talk to a BREEAM assessor
Ready to raise your building's rating?
Book a free 20-minute call with a licensed assessor.