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Dismissed22 September 20266010236

Knightswood Cottage,, Prince Albert Drive, Ascot, SL58AQ

Planning appeal 6010236 at Knightswood Cottage,, Prince Albert Drive, Ascot, SL58AQ (Bracknell Forest Borough Council) was dismissed on 22 September 2026 by Inspector J Bell-Williamson, by written representations. The main issue, as the Inspector framed it: whether the proposal would be inappropriate development in the Green Belt having regard to the Framework and relevant development plan policies.

Erection of single storey infill extension with roof lantern and skylight, installation of 3 roof lights to existing single storey roof, installation of front facing dormer window to existing dwelling and installation of side facing dormer window to existing garage

Authority
Bracknell Forest Borough Council
Appeal type
householder · Householder
Procedure
Written
Development
residential
Inspector
J Bell-Williamson
Postcode
SL5 8AQ

Main issues, as the Inspector framed them

  • whether the proposal would be inappropriate development in the Green Belt having regard to the Framework and relevant development plan policies
  • the effect of the proposal on the openness of the Green Belt
  • whether any harm by reason of inappropriateness, and any other harm, would be clearly outweighed by other considerations, so as to amount to the very special circumstances required to justify the proposal

What decided it

The cumulative extensions would result in a disproportionate 145% increase in the original building's volume, making the proposal inappropriate development in the Green Belt with no very special circumstances to justify it.

The moderate weight given to additional sustainable living space and limited weight to the fallback position did not clearly outweigh the substantial harm to the Green Belt by reason of inappropriateness and limited adverse impacts on openness.

What the Inspector cited

Development plan policies
Policy LP 34
Judgments
Mansell v Tonbridge and Malling BC & others [2017] EWCA Civ 1314

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 Bracknell Forest Borough Council

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

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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.

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.