Aegaea

Quick links

↑ ↓ to choose · Enter to open · Esc to closeSearch stays in your browser.

Policy Update2 min readDaniel Cook

Changes to the Sequential Test – NPPF

So, we have a new National Planning Policy Framework (NPPF), what is the importance of the changes with focus to flood risk?
Changes to the Sequential Test – NPPF

Older guidance.

This post covers the December 2024 NPPF. The NPPF has been updated since.

On this page

So, we have a new National Planning Policy Framework (NPPF), what is the importance of the changes with focus to flood risk? Quite significant.

Aegaea have been supporting many clients on Sequential Test work; and with the recent changes in the NPPF including the revised Paragraph 175 alongside the National Flood Risk Standing Advice to Local Authorities on the sequential test, it has changed the landscape and approach.

175. The sequential test should be used in areas known to be at risk now or in the future from any form of flooding, except in situations where a site-specific flood risk assessment demonstrates that no built development within the site boundary, including access or escape routes, land raising or other potentially vulnerable elements, would be located on an area that would be at risk of flooding from any source, now and in the future (having regard to potential changes in flood risk).

Source: National Planning Policy Framework

“You may not need a sequential test if development can be laid out so that only elements such as public open space, biodiversity and amenity areas are located in areas at risk of any source of current or future flooding.”

Source: Gov.UK

Requirements for Sequential Tests

Looking back at the evolution of the NPPF over the past 12 years. The NPPF of 2012, required a Sequential Test if located in Flood Zone 2 and 3, then this evolved to all sources with the later iterations of the NPPF and Planning Practice Guidance – Flood Risk and Coastal Change.

Aegaea has supported projects throughout this period, demonstrating in some cases that risks from all sources of flooding could be mitigated or removed through the production of a Flood Risk Assessment and good design. However, even with these measures, some applications, adhering to the older guidance, were still subject to the Sequential Test and, in certain cases, failed on this basis alone.

The recent changes with the sequential test are encouraged and welcomed. We have recently had approvals where pragmatism, hydraulic modelling and good design has removed the need for the Sequential Test and led to approvals – Scheme in Redbridge.

Talk to leading experts

Having access to a well-informed team with leading experts, good design and building collaborative relationships with the regulators Local Planning Authority, Lead Local Flood Authority and Environment Agency we are seeing more land become unlocked. Do get in touch to explore how we could support your site.

Not to mention the unique tool that exists in Aegaea that allows our experts to screen sites efficiently and effectively to aid our clients from concept through to design. If you would like to find out more about our unique tool, please get in touch. It has unlocked a number of sites across the country.

Written and reviewed by

Daniel Cook

Co-owner and Director · BSc MSc C.WEM MCIWEM

Co-owner and Director of Aegaea, a Chartered Water and Environmental Manager and flood risk and drainage expert witness, specialising in flood risk policy.

View profile →LinkedIn ↗

↑ Back to top

Insights

Talk to us about your project

If this raises questions about your own site, we can help you work through them. Share your plans and any comments from the council, and we’ll send a free, no-obligation quote.

Newsletter

Stay ahead of flood risk and planning changes

  • Policy and flood map changes, explained in plain English
  • Practical guidance for your next planning application
  • New projects and lessons from our consultants

No spam. Unsubscribe any time. By signing up, you agree to receive our newsletter and occasional updates. See our privacy policy for how we use your data.

Read the latest update →

Preview: signup not connected yet.