Planning appeal decision
10 Castle Avenue, Datchet, Slough, SL3 9BA
Planning appeal 3335795 at 10 Castle Avenue, Datchet, Slough, SL3 9BA (Royal Borough of Windsor and Maidenhead) was dismissed on 7 August 2024 by Inspector Francis L, by written representations. The main issue, as the Inspector framed it: Whether the appeal proposal constitutes development permitted under Schedule 2, Part 1, Class A of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended).
a single storey rear extension
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Francis L
- Postcode
- SL3 9BA
Main issues, as the Inspector framed them
- Whether the appeal proposal constitutes development permitted under Schedule 2, Part 1, Class A of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended)
What decided it
The total enlargement, comprising both the proposed extension and the 2010 extension, would exceed half the width of the original dwellinghouse, thereby breaching paragraph A.1.(j)(iii) of the GPDO.
The 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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