What is a Flood Consequence Assessment?

For architects, land surveyors and developers in Wales, it can be essential to provide a flood consequence assessment alongside planning permission applications. They support the site assessment development applications by looking at the risk and impact of flooding on a development site, helping to analyse the potential issues with building on sites, such as local areas having an increased chance of flooding.

For a development to take place, the flood risk report should prove that the site will remain safe in the future, taking the added effects of climate change into account when measuring the safety. When risks are found, the flood report can provide possible solutions to the risk of flooding on the development, helping you to plan and safely bypass these risks.

Choose the right report for you

Looking for the right Flood Consequence Assessment package for you? At GeoSmart, we have several assessment options, all giving clear flood management options and fast delivery times to help you prepare to manage risks that may occur on developments. Find out more about our different report options below.

* pricing based on site size, location & complexity
Features includedFloodSmart
From £1,095+VAT*
Get a quote
FloodSmart Plus
From £1,295+VAT*
Get a quote
FloodSmart Pro
From £1,995+VAT*
Get a quote
Suitable for Flood Risk levelLowMedium to HighMedium to High
Professional opinion from expert flood risk consultants
Consultation with regulators
Fast delivery time (working days) **5-1020-3020-30
Review of strategic flood risk assessment (SFRA)
Clear Flood mitigation and management options
£5 million PI
Supports Architects, Developers, Planning Consultants and the Legal Market
Natural Resources Wales (NRW) model data analysis
Flood levels
NRW Flood Defences
Site Visit

* pricing based on site size, location & complexity
** Expedited turnarounds are available on request

Frequently Asked Questions

A Flood Consequence Assessment is required for any planning application in Wales where the site of the proposed development is located within a medium or high risk area of flooding. Such sites are considered to be at risk of flooding and Natural Resources Wales (NRW) and Welsh planning authorities have the power to challenge planning applications that have not taken into account all of the flood risks involved.

A Flood Consequence Assessment should demonstrate how a proposed development will manage flood risk from all possible water sources to the site in question. Changes in flood risk to off-site locations as a consequence of development should also be considered with recommendations provided to avoid increasing such risk.

Your site will be located in a Flood Zone as defined by Natural Resources Wales for planning purposes. To find out what Flood Zone your site is located in, input your postcode into the Development Advice Map available online.

  • House builders and developers
  • Property professionals such as architects, planning consultants and land agents
  • Lawyers and solicitors
  • Lenders, banks or mortgage providers
  • Businesses
  • Private individuals
  • Insurance companies

  • Validating planning applications
  • Meeting planning conditions
  • For land and property purchase
  • For the sale or divestment of a site
  • Due diligence
  • Lending, mortgages, pension funds
  • Business risk assessment

A FloodSmart Report for Sites located in a low risk area can be delivered in 5-10 working days.

Delivery of reports requiring NRW consultation and data (FloodSmart Plus and FloodSmart Pro) is dependent on their response times to supply such data, which can typically take up to 20 working days. Typically your flood risk report will be dispatched within 10 working days from receipt of the required data.

A premium delivery is available if your report is urgent – do get in touch and let us know.

Your report will be sent in electronic format as a .pdf file straight to your inbox, with hard copies available at an additional cost.

Welsh planning authorities are likely to request a Flood Consequence Assessment for any site which is situated on the modelled flood plain, and within the vicinity of a fluvial or tidal watercourse.

Flood Consequence Assessments are also requested in areas where there is a medium to high risk of surface water flooding.

Different levels of flood consequence assessment reports are required for different purposes. We’ve therefore developed a range of products which are suited to meet the various needs of our clients. If you’re not sure which level of report you need please contact us at enquiries@geosmartinfo.co.uk.

Still have questions? Chat to our friendly team today

Additional services available

  • Sequential Test
  • Exceptions Test
  • Basement Impact Assessment
  • Flood Modelling
  • Portfolio Screening
  • Flood Evacuation Plan
  • Groundwater FRA
  • BREAAM Flood Risk Assesssment
  • Compensatory Floodplain Storage Analysis
  • Coastal Change Vulnerability Assessment

Did you know, we also provide reports for:

Contaminated Land


EnviroSmart Plus

EnviroSmart Pro

Sustainable Drainage


SudSmart Plus

SudSmart Pro

We value the quality of all that we do as critically important and our team is goal oriented

Environmental Reports provided.
3 million+
UK property transactions used GeoSmart data.
Utility and Public Service Providers used GeoSmart data.
Value of properties advised on flood risk
Brilliant customer service.

Fusion Food Court

“We were impressed by the speedy, well-informed service and personal contact that we received. The report was thorough and comprehensive. We will certainly use GeoSmart’s services in the future”

Gregory Gray

Gregory Gray Associates

We value and strive to achieve Service Excellence as the key to our success.