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Planning appeal decision

Notice upheld11 March 20263346039

16 Thurlby Way, Maidenhead, SL6 3YZ

Planning appeal 3346039 at 16 Thurlby Way, Maidenhead, SL6 3YZ (Royal Borough of Windsor and Maidenhead) was dismissed on 11 March 2026 by Inspector McDonagh C, by written representations. The main issue, as the Inspector framed it: The effect of the development on the character and appearance of the host building and local area.

‘Without planning permission, the erection of two storey side extension, with integral dormer windows in front and rear elevations.’

Authority
Royal Borough of Windsor and Maidenhead
Appeal type
enforcement · Enforcement Notice
Procedure
Written Representations
Development
residential · Householder developments
Inspector
McDonagh C
Postcode
SL6 3YZ

Main issues, as the Inspector framed them

  • The effect of the development on the character and appearance of the host building and local area

What decided it

The substantial and unbalanced mass of the extension, its domineering scale with enlarged dormers, and the rendering in off-white against the brick character of the area cause significant harm to the character and appearance of the host building and locality that cannot be outweighed by private benefits or neighbour support.

What the Inspector cited

Development plan policies
Policy QP3
National Planning Policy Framework
Paragraph 135

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 applied

The decision letter

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More decisions in Royal Borough of Windsor and Maidenhead

The authority’s record since 2016 · every decision in 2026

  1. Notice upheld24 September 20263353235
    Sunnyside Stanwell Road, Horton, Slough, SL3 9PE
  2. Notice upheld24 September 20263353234
    Sunnyside Stanwell Road, Horton, Slough, SL3 9PE
  3. Notice varied and upheld17 September 20263362183
    2 Aston Mead, Windsor, SL4 5PW
  4. Notice upheld10 August 20263369085
    Land to the Side of 16 Halfway Houses, Maidenhead Road, Maidenhead, Berkshire, SL6 6PP
  5. Notice upheld2 July 20263369837
    8 Clare Road, Maidenhead, SL6 4DG

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.

In the app this decision sits on the map beside every appeal around it, with its letter to read and the main issues, policies and judgments cited picked out.