Planning appeal decision
9 Highfield Road, Windsor, SL4 4DN
Planning appeal 3359968 at 9 Highfield Road, Windsor, SL4 4DN (Royal Borough of Windsor and Maidenhead) was dismissed on 15 April 2025 by Inspector Evans M, by written representations. The main issue, as the Inspector framed it: The effect on the character and appearance of the host dwelling, streetscene and locality.
described on the application form as “Construction of two storey front extension and new pitched roof to existing garage”
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Evans M
- Postcode
- SL4 4DN
Main issues, as the Inspector framed them
- The effect on the character and appearance of the host dwelling, streetscene and locality
- The effect on the living conditions of the occupiers of the adjacent dwelling at 8 Highfield Road, with regard to whether the development would appear overbearing
What decided it
The harm to character and appearance of the streetscene and the overbearing effect on the adjacent property's living conditions, arising from the disproportionate scale and bulk of the extension, was sufficient to justify dismissal regardless of other matters raised.
What the Inspector cited
- Development plan policies
- Policy QP 3SPD Principle 10.2SPD Principle 10.1
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
Town Planner Pro holds this letter. The Appeals plan opens it and every other letter we hold, all of them searchable, with the main issues and what decided each case picked out. We do not show letters on the free site because they carry people’s names and addresses.
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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