Flood Risk and Drainage Requirements for New Developments Explained
Flooding is a major planning concern in the UK. If you’re proposing new homes, commercial units, or infrastructure, you’ll need to demonstrate effective flood risk management and drainage.
EnviroSolution provides Flood Risk Assessments and Infiltration Testing — helping you get approvals quickly.
What Is a Flood Risk Assessment (FRA)?
An FRA identifies flood risks to and from your site. It is often required by:
- Environment Agency
- Local Planning Authorities (especially for sites in Flood Zones 2/3)
An FRA includes:
- Risk of fluvial, tidal, and surface water flooding
- Site-specific flood mitigation recommendations
- Sustainable drainage (SuDS) strategies
Drainage Strategy Requirements
To prevent your site worsening downstream flooding, you must often provide:
- SuDS Schemes (attenuation basins, permeable paving)
- Infiltration Tests (to assess soakaway viability)
- Runoff rate calculations
Our expert team performs field testing and designs SuDS systems fully compliant with the latest planning requirements.
FAQs
Q: When is an FRA needed?
👉 For developments >1 hectare, or any in flood-prone areas.
Q: What is Infiltration Testing?
👉 Field tests to assess soil permeability — needed to design soakaways or infiltration trenches.
Q: How fast can you deliver reports?
👉 Typically within 7–10 working days.
Book Your Assessment Today
Secure planning approval with our trusted flood risk services.
👉 Contact us today.