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Case Study2 min readDaniel Cook

Sequential Test methodology for community-led housing in Southwark

Aegaea supported community-led housing provider Leathermarket CBS with Sequential Test and flood risk consultancy for two residential schemes in Southwark (SE1).
Sequential Test methodology for community-led housing in Southwark

Project in brief

Agreed methodology

Southwark, London SE1Leathermarket Street and Elim Estate community-led housing

The question
Agree a transparent approach to the Sequential Test across two proposals.
Our work
A methodology statement and engagement with council planning and legal officers.
Reported outcome
An agreed framework for the assessment. The account does not record final planning decisions for either scheme.
On this page

Supporting community-led housing

Leathermarket Community Benefit Society is a non-profit, community-led housing provider working within the Leathermarket JMB estates. Aegaea was appointed to provide Sequential Test and flood risk policy advice for two residential proposals: 26 Leathermarket Street and Elim Estate.

The team needed a clear approach to assessing the sites and presenting the evidence to Southwark Council. Our work focused on developing that approach with the people responsible for preparing and considering the applications.

Project illustration for the Leathermarket housing proposals
Project illustration for the Leathermarket housing proposals

Why the methodology mattered

A previous legal challenge concerning housing at Elim Estate formed part of the background to the appointment. Aegaea became involved after that decision and had not worked on the earlier application.

For the new work, the project team needed to explain how the Sequential Test would be applied to these proposals. Agreeing the approach at the outset provided a shared basis for preparing and reviewing the evidence.

Working with the council at the outset

Aegaea engaged with Southwark Council’s planning and legal officers to develop an agreed methodology. We prepared a Methodology Statement that considered the relevant policy framework and lessons arising from the earlier legal challenge.

The work involved discussing and agreeing the assessment parameters with the local planning authority before completing the formal assessment. The resulting framework could be applied across both projects while keeping their individual circumstances in view.

Plan accompanying the Leathermarket project account
Plan accompanying the Leathermarket project account

What the work provided

The agreed methodology gave the client and council a consistent framework for considering the Sequential Test evidence for Leathermarket Street and Elim Estate. It made the approach explicit and helped the project team explain the basis of its assessment.

This case describes Aegaea’s contribution to the methodology and supporting evidence. It does not record a final planning decision for either scheme or claim that an agreed methodology guarantees permission.

A useful lesson for other project teams

Where the application of a planning test needs careful consideration, it helps to discuss the proposed approach early, record what has been agreed and make the supporting evidence easy to follow. That gives everyone involved a clearer starting point for the assessment.

For current projects, the Sequential Test is explained in the government’s Flood risk and coastal change guidance. The appropriate approach depends on the proposal and the applicable policy. A methodology used for one project should not be assumed to fit another.

If you need help responding to a Sequential Test request, share the site boundary, proposal and the council’s correspondence. Speak with Aegaea about the evidence and scope needed for your project, or read about our flood risk assessment service.

Further illustration accompanying the Leathermarket project account
Further illustration accompanying the Leathermarket project account

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.

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