Please enable JavaScript in your browser to use this page.

Environmental Impact Assessment

Published: 2020-01-27 Updated: 2021-02-24 Subject: Planning, Planning checklist

Planning application - local requirement

When the requirement applies

When a major development (defined as Schedule 1 or Schedule 2) is likely to have a significant effect on the environment because of its nature, size, use and location, then you must submit an Environmental Impact Assessment (ES) with the planning application. 

You can ask us (the local planning authority) for a formal screening opinion confirming whether your project requires Environmental Impact Assessment (EIA). If EIA is likely to be required, developers must produce an Environmental Statement (ES) to support their planning application.

You may ask us for our formal opinion on the information to be supplied in the ES. This is known as a 'scoping opinion'.  This enables us to clarify what it considers the main effects of the development are likely to be. 

When making a request for a scoping opinion, you must as a minimum provide the information set out in regulation 15(2) of the Town and County Planning (Environmental Impact Assessment) Regulations 2017

In line with the guidance within the National Planning Practice Guidance, the ES must be prepared by competent experts and be accompanied by a statement from the developer outlining the relevant expertise, or qualifications of such experts.

We recommend using our Pre-Planning Application Advice service for complex development proposals, to ensure that you are able to get all of the necessary information to support your application, before you submit it.

What the assessment should include

 All EIAs should include the following:

  • Details of the proposed development: site, design, size and relevant features
  • Details of the likely significant effects of the proposed development on the environment
  • Ways in which you propose to avoid or limit the impact on the environment
  • Reasons for choosing this type and nature of development
  • Details of the experts who have prepared the assessment, and their qualifications

For further information, please consult the regulations below.

Coronavirus update

If the coronavirus outbreak has affected the timescale of your development, you may need to apply to get Additional Environmental Approval

Warning Some file formats may not be suitable for users of assistive technology.
Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email Please tell us what format you need. It will help us if you say what assistive technology you use.