Planning appeal decision
8 Christchurch Street, London, SW3 4AW
Planning appeal 3354184 at 8 Christchurch Street, London, SW3 4AW (Royal Borough of Kensington and Chelsea) was dismissed on 7 March 2025 by Inspector Callister V, by written representations. The main issue, as the Inspector framed it: The effect on the character and appearance of the appeal dwelling, and that of the local area, with reference to the Royal Hospital Conservation Area.
the erection of mansard roof extension at second floor level with dormers and rooflights and other associated alterations
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Callister V
- Postcode
- SW3 4AW
Main issues, as the Inspector framed them
- The effect on the character and appearance of the appeal dwelling, and that of the local area, with reference to the Royal Hospital Conservation Area
What decided it
The proposed mansard roof extension would substantially harm the character and appearance of the appeal dwelling and fail to preserve or enhance the conservation area, with the identified harm outweighing the modest benefit of additional living space.
What the Inspector cited
- Development plan policies
- Policy CD1Policy CD2Policy CD4Policy CD12
- National Planning Policy Framework
- Paragraph 208
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.
See how each was appliedThe decision letter
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With an account
What an account adds to this decision


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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.
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