Flood risk assessment - Planning validation requirements

Back button/Page style

Back to validation homepage

Planning document information


A flood risk assessment, is a report that identifies and assesses the risks of all forms of flooding to and from the development. It demonstrate how these flood risks will be managed taking climate change into account. 


The information you should include in your flood risk assessment depends on the type of development and site location. You can find full details of what you need to provide using The Environment Agency's Flood Risk Standing Advice

The report you submit should include an executive summary and be clear, easy to read and jargon free. 

Application that always need this document

When you must supply this information 

You must always submit a flood risk assessment if your application is for: 

  • A development of one hectare greater in flood zone 1 
  • Any development in flood zones 2 and 3 
  • Any development in an area the Environment Agency Internal Drainage Boards have indicated may have drainage problems 

You can use the Environment Agency website to find maps of flood zones

You can get help and advice from our Duty Planner on flood risk assessments and planning applications. 

You can get detailed feedback on your proposal by using our pre-application advice service

Personal and confidential statement 

We may publish any information you submit as part of your application. You must tell us if there is any information you do not want us to publish when you submit your application.  

If however, we believe that this information is in the public interest, we reserve the right to publish it.  

We may also decide parts of your submission are not in the public interest and may redact this information. This information may include telephone numbers, email addresses and signatures. 

Applications that sometimes need this document

Depending on the details of your application, you may have to submit a flood risk assessment when you are making an application for: 

Validation requirements

Required by 

These policies can be found in the Local Plan 2013 - 2033 document