25a Eaton Place, London, SW1X 8BP

Planning appeal 3348720 at 25a Eaton Place, London, SW1X 8BP (City of Westminster Council) was decided (quashed on legal grounds) on 8 December 2025 by Inspector Hand S, by written representations. The main issue, as the Inspector framed it: Whether the unauthorised works cause harm to the special architectural or historic interest of the listed building.

Retention of metal and glazed staircase to rear elevation of mansard roof, glazed balustrade and decking on roof to facilitate creation of roof terrace, and air conditioning unit and water tank housing structure on roof

Authority: City of Westminster Council
Appeal type: enforcement · Appeal against Enforcement Listed Building Notice/Enforcement Conservation Area Notice
Procedure: Written Representations
Development: other · Householder developments
Inspector: Hand S
Postcode: SW1X 8BP

Main issues, as the Inspector framed them

Whether the unauthorised works cause harm to the special architectural or historic interest of the listed building

What decided it

The prevalence of similar roof terraces in the immediate area and the discrete nature of the appeal works, combined with the absence of any identifiable harm to the special architectural or historic interest of the listed building, justified granting consent.

What the Inspector cited

Development plan policies: Policy 39 (Westminster's Heritage)
National Planning Policy Framework: Paragraph 39

How the Inspector dealt with each one is set out in the app, in order: the development plan, national policy, housing land supply, other considerations and the planning balance, beside the letter.

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The decision letter

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The main issues, what decided it, the planning balance and the policies and judgments listed as cited are read from the published letter by Town Planner Pro and are our summary, not the Inspector’s words; the letter itself is the record. Contains public sector information licensed under the Open Government Licence v3.0. Research, not advice.