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Dismissed17 March 20266003020

Park House, 9A Wrythe Lane, Carshalton, SM5 2QU

Planning appeal 6003020 at Park House, 9A Wrythe Lane, Carshalton, SM5 2QU (London Borough of Sutton) was dismissed on 17 March 2026 by Inspector Wallace P, by written representations. The main issue, as the Inspector framed it: The effect of the development on the character and appearance of the building and the area, including whether it would preserve and enhance the Wrythe Green Conservation Area.

a single storey rear extension, 'hip to gable' roof extension, dormer extension to rear, second floor flank window to side and two rooflights to front

Authority
London Borough of Sutton
Appeal type
householder · Householder (HAS)
Procedure
Written Representations
Development
residential · Householder developments
Inspector
Wallace P
Postcode
SM5 2QU

Main issues, as the Inspector framed them

  • The effect of the development on the character and appearance of the building and the area, including whether it would preserve and enhance the Wrythe Green Conservation Area

What decided it

The scale and form of the gable and dormer extension, which creates a discordant roofscape that dominates the host dwelling and disrupts the coherence of the terrace, causes harm to the conservation area that is not outweighed by the limited private benefits of additional accommodation.

What the Inspector cited

Development plan policies
Policy 28Policy 30
National Planning Policy Framework
Paragraph 212Paragraph 215

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 London Borough of Sutton

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

  1. Dismissed19 October 20266002198
    103 Marlow Drive, North Cheam, SM3 9BD
  2. Allowed15 October 20266009820
    Grass Verge of Sparrow Farm Road, London, KT17 2DF
  3. Dismissed27 August 20266005269
    85 Priory Road, North Cheam, SM3 8LY
  4. Dismissed7 August 20266008124
    3 Carshalton Grove, Sutton, SM1 4LY
  5. Dismissed27 July 20266006764
    136 Grove Road, Sutton, Sutton, SM1 2DF

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.