Our Flood Risk Assessments in Cornwall ensure that new developments meet planning policies for flood risk
We support flood risk assessment projects in Cornwall, each with its own planning requirements and flood risk considerations. Our experience working with local authorities allows us to provide clear, tailored advice for each site.
Our work includes projects across:
Flood risk assessment costs in Cornwall vary depending on site size, location and complexity. Smaller, low-risk developments are generally lower cost, while sites involving basements and constrained urban conditions, typically require more detailed analysis and its cost increases.
Any size development
Details site potential within the floodplain before making an investment decision or starting your master plan design
Developments less than 250 square metres within flood zone 2 or 3
Developments less than 1,000 square metres within flood zone 2 or 3
Developments less than 2500 square metres within flood zone 2 or 3
Learn more about flood risk assessment cost and what factors influence pricing across different development types.
Our experience has enabled us to deliver flood risk assessment reports across Cornwall, supporting successful planning applications
Flood risk assessment in Cornwall reflects its extensive Atlantic coastline, rugged cliffs, and network of narrow, steep river valleys that respond quickly to intense rainfall. Many communities lie close to coastal inlets, estuaries, and rapidly flowing rivers that can rise sharply during storms.
Coastal surges, wave overtopping, and fast-moving fluvial pathways combine with local drainage characteristics to create a broad spectrum of flood environments. These varied conditions, shaped by Cornwall’s unique geography, require detailed understanding when considering development across the county.
In Cornwall a flood risk assessment is often required to support planning applications where flood risk must be clearly addressed. This typically depends on flood zone classification, site size, and whether the proposed development introduces a more vulnerable use, especially in coastal or low-lying areas
Common scenarios include:
If your site is affected by flood risk, early assessment can help avoid planning delays
RIDA is a trusted flood risk assessment consultancy in Cornwall, providing planning-ready reports that support successful applications and minimise delays.
Planning-Ready Reports That Get Approved
We produce clear, professionally structured FRAs designed specifically for planning submission. Every report shows how flood risk has been properly assessed and addressed, helping avoid objections and unnecessary back-and-forth with the council.
Practical Solutions, Not Just Reports
We don’t just identify risks, we provide straightforward, realistic mitigation strategies to keep your project viable. From coastal and tidal risk to surface water and drainage, we make sure nothing is overlooked.
Local Knowledge That Saves You Time
With experience across Cornwall, we understand local flood risks, coastal constraints and Cornwall Council expectations. This means fewer revisions, faster approvals and a smoother planning process.
Flood risk assessments provide a detailed analysis of all potential flood sources, offering tailored mitigation strategies for your development in Cornwall. You’ll receive clear, specific, and expert report which:
Meets the local and national planning policies
Costs effective in the mitigation of flood risk
Enables you to make informed changes to the design and achieve planning
Safeguard your development from flooding throughout its lifetime
In Cornwall, we prepare Flood Risk Assessments to support planning applications where the authority expects a clear technical narrative. We keep the document aligned with the scheme description so it complements statements and plans rather than duplicating them.
Typical clients:
Flood risk is a key part of the planning process in Cornwall, and it must be clearly addressed to secure approval. A well-prepared Flood Risk Assessment (FRA) helps demonstrate that your development is safe, policy-compliant and suitable for its location.
Cornwall Council, as the Lead Local Flood Authority, works alongside the Environment Agency to assess flood risk from sources such as surface water, groundwater and coastal flooding. Understanding these requirements early can help avoid delays and objections during planning.
Working on a site in Cornwall? Don’t risk planning delays by overlooking flood risk requirements
Cornwall Council, as the Lead Local Flood Authority, reviews flood risk using Environment Agency data, local flood records and Strategic Flood Risk Assessments (SFRA). They ensure developments meet both national and local planning policy requirements.
Check our reponse here
Flood risk can be checked using Environment Agency flood maps and local planning resources. Organisations like the Cornwall Community Flood Forum also provide useful guidance on local flood risks, community resilience and understanding flood-prone areas.