flood risk assessments and why you might need one

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Flood risk is therefore something that you need to consider seriously when planning a new development or an extension to an existing home or business property. The Environment Agency issues advice to local authorities on when flooding may pose a risk to any proposed developments in their area.

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Flood Risk Assessments and Why You Might Need One

Flooding is an increasing problem in the UK as demand for new housing increases and developers look to

build on areas of land that might previously have been considered unsuitable. This is a particular issue in

areas like Lincolnshire where building design may well take place in low lying areas and on former

agricultural land. Flood risk is therefore something that you need to consider seriously when planning a new

development or an extension to an existing home or business property. The Environment Agency issues

advice to local authorities on when flooding may pose a risk to any proposed developments in their area.

Mapping out the Flood-line

On the Environment Agency’s website you can view maps showing the areas that are most at risk of

flooding which will help you see if you’re likely to be affected. Even so it’s important to discuss potential

development with the planning department of your local council to ensure that the possibility of flooding is

taken into account at an early stage. A flood risk assessment is required as part of the planning application

process if your site falls within zones 2 or 3 on the map. You’ll also need one if the development is more

than one hectare in size regardless of its location.

Whilst an initial assessment can be made on the basis of the Environment Agency map a detailed analysis

will need to look at the particular risks posed to the site. It should also take account of how the

development will change the flood risk to the surrounding area by adding to the amount of surface water

run-off, the load on the sewer system and so on. As well as being part of the planning process the

assessment can also be used to plan the drainage requirements for the site in order to minimise the

potential flood risk.

Assess the situation

A firm of local architects or architectural consultants can help you by carrying out an assessment as part of

the process of applying for planning permission. Local knowledge is an essential factor here as they’ll be

able to take account of any special factors in the area. By taking account of this at an early stage you can

minimise the chances of complications arising later on. Having a flood risk assessment carried out can help

reduce your insurance premiums too by giving a clear indication of whether the property is liable to flood. A

risk of flooding doesn’t necessarily mean that your planning application will be turned down but you will

need to show that the development has been planned in order to manage the effects in a safe and

sustainable way.

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