💧 Drainage Strategy Builder
Generate a surface water drainage strategy for your planning application. Calculate discharge rates, identify suitable SuDS techniques, determine attenuation requirements, and produce compliance documentation.
Generating drainage strategy...
About this tool: Drainage Strategy
Surface water drainage strategy — SuDS hierarchy compliance, greenfield discharge rate targeting, attenuation volume calculation, and CIRIA C753 methodology.
Required for most developments that increase impermeable area. LLFA consultation is mandatory for major applications. SuDS are expected unless demonstrated impractical.
NPPF drainage policy F8, CIRIA C753, LLFA requirements
Use these tools when preparing technical reports and compliance documentation. Many of these are validation requirements — submit without them and your application will be returned. Use the Validation Pre-Flight tool to check which ones you actually need.
Guidance to help you prepare — not formal planning advice. Check the current policy text and your council's local plan before relying on it.