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Planning appeal decision

Dismissed20 October 20253369283

16 Castelnau, Barnes, London, SW13 9RU

Planning appeal 3369283 at 16 Castelnau, Barnes, London, SW13 9RU (Richmond Upon Thames London Borough Council) was dismissed on 20 October 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 Castelnau Conservation Area.

the erection of a first-floor infill link extension, connecting the main house to the coach house

Authority
Richmond Upon Thames London Borough Council
Appeal type
householder · Householder (HAS)
Procedure
Written Representations
Development
residential · Householder developments
Inspector
Callister V
Postcode
SW13 9RU

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 Castelnau Conservation Area

What decided it

The proposal would result in substantial harm to the appeal dwelling as a Non-Designated Heritage Asset and less than substantial harm to the Castelnau Conservation Area through its bulky, incongruous form and loss of the original spatial separation between the main house and coach house, which outweighs the private benefit of increased living space.

What the Inspector cited

Development plan policies
Policy 28Policy 29Policy 30
National Planning Policy Framework
Paragraph 216

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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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.