Flood Risk Assessments & Drainage Strategies in Liverpool
Independent flood risk consultants serving Liverpool and surrounding areas. Planning-ready FRAs and SuDS drainage strategies from £295, delivered within 3–5 working days.
Flood Risk Assessments in Liverpool
Flood Risk Environmental provides Flood Risk Assessments, SuDS drainage strategies and detailed drainage design for planning applications across Liverpool and the wider Merseyside region.
Liverpool and Merseyside have significant tidal and fluvial flood risk, with coastal flooding from the Mersey Estuary and fluvial risk from the Rivers Alt, Mersey and Ditton. The 2015 and 2019 flooding events highlighted surface water flooding vulnerabilities. Merseyside LLFAs have detailed SuDS requirements, and the Environment Agency is an active consultee on tidal and fluvial matters.
Our reports are prepared by a qualified consultant with over 17 years' experience and written specifically to satisfy the requirements of Liverpool City Council and Merseyside Flood Risk Management as the Lead Local Flood Authority.
Services in London
- Flood Risk Assessments — from £295
- SuDS drainage strategies for planning
- Detailed SuDS and drainage design
- LLFA SuDS proforma completion (Merseyside Flood Risk Management)
- Sequential and Exception Test submissions
- S23 Ordinary Watercourse Consent
- EA Flood Risk Activity Permit applications
- LLFA drainage objection responses
When Do You Need a Flood Risk Assessment in Liverpool?
Planning applications in Liverpool require a Flood Risk Assessment in the following circumstances:
Development in Flood Zone 2 or 3
Any development in London's Flood Zone 2 or 3 areas requires an FRA. The LLFA will object to applications in flood risk areas without a robust FRA and drainage strategy.
Major Applications (10+ dwellings)
Major planning applications in Liverpool — 10 or more dwellings, sites over 0.5ha, or non-residential floorspace over 1,000m² — require an FRA in any flood zone.
Sites Over 1 Hectare in FZ1
Large sites in Flood Zone 1 may require an FRA if over 1 hectare, to demonstrate that drainage is adequate and runoff won't increase downstream flood risk.
LLFA Drainage Conditions
Where Merseyside Flood Risk Management has imposed a pre-commencement drainage condition, we prepare the detailed SuDS design package needed to satisfy the condition and secure approval.
LLFA Drainage Objections
If your Liverpool planning application has received a flood risk or drainage objection from the LLFA, we can review it and prepare a technical response to resolve it fast.
Change of Use
Converting commercial buildings to residential use in a flood risk area in Liverpool typically requires a new Flood Risk Assessment to confirm future occupiers will be safe.
Frequently Asked Questions
Trusted by Developers, Architects & Planning Consultants
“Antony was great to work with when we needed a Flood Risk Assessment and Emergency Flood Plan. As an architect I would definitely use FRE Consultants again — professional and produced reports within a good time frame.”
“The service received was great and at a competitive cost. We were granted planning after first submission.”
“Fast, technically thorough and understood exactly what the LLFA needed. Approved without any queries. Highly recommended for any flood risk or drainage work.”
Need a Flood Risk Assessment in Liverpool?
Free no-obligation fixed-fee quote for your Liverpool planning application within 24 hours.
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