Flood Risk Assessment
Professional flood risk assessment services in the UK. CGS Civils prepares compliant flood risk assessments to support planning applications.
Flood Risk Assessment
A professional flood risk assessment is a key requirement for many development projects, particularly where sites are located within or close to areas of flood risk. At CGS Civils, we provide comprehensive flood risk assessments that support planning applications and clearly demonstrate how flood risk will be managed safely and effectively.
We can carry out Flood Risk Assessments for developments of any scale, prepared in accordance with the National Planning Policy Framework (NPPF), local authority requirements, and CIRIA C697. All assessments are produced by experienced civil engineers and designed to meet the expectations of local planning authorities, Lead Local Flood Authorities, and the Environment Agency.
Professional Flood Risk Assessments in the UK
CGS Civils delivers professional flood risk assessments for residential, commercial, and mixed-use developments across the UK. Each assessment is tailored to the specific site and considers all relevant sources of flooding, including fluvial, surface water, groundwater, and artificial sources.
By identifying flood risk early, our flooding risk assessment services help developers understand site constraints and implement appropriate mitigation measures, reducing the risk of planning delays, conditions, or refusals.
What Is a Flood Risk Assessment?
A flood risk assessment is a technical report that evaluates the likelihood and potential impact of flooding on a proposed development. It considers how flood risk may affect the site and whether the development could increase flood risk elsewhere.
A robust flood risk assessment demonstrates that flood risk has been fully assessed and that suitable mitigation measures are in place to protect people, property, and the surrounding environment.
What Our Flood Risk Assessment Service Includes
CGS Civils prepares flood risk assessments that clearly present site-specific flood risk information and appropriate mitigation strategies. Each assessment is produced in line with current planning policy and technical guidance.
Our reports typically include a review of Environment Agency flood zone data, an assessment of surface water and groundwater flooding, and an evaluation of existing drainage infrastructure and flood defences. Where required, we also assess climate change impacts to ensure long-term site resilience.
Flood Risk Assessments for Planning Applications
A flood risk assessment is often a mandatory requirement for planning applications in Flood Zones 2 and 3, and in some cases for developments in Flood Zone 1 where surface water flooding presents a potential risk.
CGS Civils prepares assessments that are clear, evidence-based, and suitable for submission to planning authorities and statutory consultees. We also respond to technical queries and requests for clarification during the planning process, helping applications progress efficiently.
Prepared by Experienced Civil Engineers
All flood risk assessments are prepared by qualified civil engineers with extensive experience in flood risk management and planning approvals. Our team understands the expectations of the Environment Agency and local authorities, allowing us to anticipate potential concerns and address them within the assessment.
This experience helps reduce the likelihood of objections and supports a smoother, more efficient planning process.
Flood Risk Assessment Cost
The flood risk assessment cost can vary depending on site size, location, flood zone classification, and the complexity of the proposed development. CGS Civils provides clear and transparent pricing based on the specific requirements of each project. .
By delivering well-structured and compliant assessments from the outset, we help avoid additional costs associated with revisions, resubmissions, or planning delays.
Integration with Drainage and Site Design
Flood risk assessments form an important part of the wider civil engineering design package. CGS Civils ensures flood risk considerations are fully integrated with drainage design, site levels, and external works. .
This coordinated approach helps demonstrate that flood risk has been addressed holistically and supports robust, practical, and deliverable development proposals.
Compliance and Best Practice
CGS Civils prepares flood risk assessments in line with current UK planning policy, including the National Planning Policy Framework (NPPF), Environment Agency guidance, and CIRIA C697. Each flooding risk assessment is tailored to local authority requirements while remaining proportionate to the scale and nature of the development. .
We also account for climate change allowances to ensure developments remain safe and resilient throughout their design life.
Speak to a Civil Engineer About a Flood Risk Assessment
If your development requires a professional flood risk assessment, CGS Civils is ready to assist. Our team can advise on requirements, costs, and timescales, and prepare a compliant assessment tailored to your site.
Contact us today to speak with a civil engineer and find out how CGS Civils can support your project with expert flood risk assessment services.