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Drainage requirements

Planning and Building Control Background

There are extra drainage requirements for major projects involving either:

  • 10 or more properties
  • 1,000 square metres of non-residential floor space

We require these projects to include plans for Sustainable Urban Drainage Systems (SuDS). Effective SuDS manage surface water drainage and run-off. Your plans must show:

  • How and where you will build SuDS
  • How you will maintain SuDS

To meet drainage requirements, submit a Surface Water Drainage form with your application.

Download a Surface Water Drainage form (PDF) [622KB] .

You can find more information about drainage requirements here: