U1: using waste in construction
Summary
The Environment Agency has updated guidance on the U1 waste exemption, which allows certain suitable waste materials to be used in construction, landscaping, drainage works and maintenance of linear networks. The guidance sets out activity-specific tonnage limits, contamination restrictions, validity periods and the need to comply with other permissions such as flood risk permits and planning consent.
Why it matters
Surveyors may encounter U1-related proposals in development, remediation or maintenance schemes and need to recognise when waste use is exempt versus when a permit or other consent is required. The contamination controls, engineering standards and flood-related caveats are relevant to site due diligence, risk assessment and advising clients on compliance.
Key points
- U1 is a waste exemption for using suitable waste in specified construction and maintenance activities.
- The exemption is valid for 3 years from registration and is subject to activity-specific tonnage limits.
- Waste must not be contaminated with pollutants such as plastic, asbestos fragments, oils or fuels.
- Some uses require additional permissions, including flood risk management permits and planning permission.
- Road-building and drainage uses have specific conditions, including engineering standards and legislation references.
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