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Planning appeal decision

Allowed22 December 20253371070

6 Upper Wimpole Street, (also includes 6 Devonshire Mews South), LONDON, W1G 6LG

extensions and internal and external alterations to the existing property to facilitate the use as a single family dwelling, including demolition and rebuilding of the existing rear infill extension and mews house behind a retained facade, and the erection of a mansard roof extension at 6 Upper Wimpole Street and extension of the basement

Authority
City of Westminster Council
Appeal type
householder · Planning Appeal
Procedure
Written Representations
Development
residential · Householder developments
Inspector
Veevers A

Main issues, as the Inspector framed them

  • whether the proposed roof extension at 6 Upper Wimpole Street would preserve the Grade II listed building, 1-6 Upper Wimpole Street W1, or any features of special architectural or historic interest that it possesses
  • whether the proposed roof extension would preserve or enhance the character or appearance of the Harley Street Conservation Area

What decided it

The fallback position under the 1990 permissions, which would result in greater harm to the listed building and conservation area than the appeal proposals, constituted a material consideration of significant weight sufficient to justify the permitting of development that failed to accord with the development plan.

Framework references: 212, 213, 215

Plan policies cited: Policy 38, Policy 39, Policy 40, Policy 42, Policy 44, Policy 45, Policy 43

The main issues and the deciding factor are read from the published letter by Town Planner Pro; the letter itself is the record. Contains public sector information licensed under the Open Government Licence v3.0. Research, not advice.

In the app this decision sits on the map beside every other appeal around it, with the full reasoning summary, the letter held on file, and the case law it applies.