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CONSULT.Outcome publishedConsultation · gov.uk

Upward extensions in London

We are seeking views on proposals to increase housing supply in London by building upwards while protecting open spaces and the green belt.

Last fetched 03 May 2026 · gov.uk
Detail

This consultation proposes 3 complementary ways to encourage building upwards, by adding a limited number of storeys to existing buildings.

These 3 proposals could work together to incentivise house building in the capital:

  • a London-wide permitted development right, with a prior approval, for up to 2 additional storeys, up to the roofline of an adjoining building
  • planning policies in the London Plan to support upward extensions for new homes
  • boroughs making local development orders to grant planning permission to extend upwards for all or part of their area, or for particular types of buildings
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