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Planning appeal decision

Dismissed13 January 20263369860

21 Lingwood Gardens, Isleworth, TW7 5LY

Planning appeal 3369860 at 21 Lingwood Gardens, Isleworth, TW7 5LY (London Borough of Hounslow) was dismissed on 13 January 2026 by Inspector Bradford F, by written representations. The main issue, as the Inspector framed it: The effect of the proposed loft conversion on the character and appearance of the host dwelling and surrounding area, including whether it would preserve or enhance the character or appearance of the Osterley Park Conservation Area.

Proposed part single and part 2-storey rear extension matching approved proposal at No 21 Ref P/2024/1819. Proposed loft conversion matching the approval and built loft conversion at No 29 Lingwood Gardens”

Authority
London Borough of Hounslow
Appeal type
householder · Householder (HAS)
Procedure
Written Representations
Development
residential · Householder developments
Inspector
Bradford F
Postcode
TW7 5LY

Main issues, as the Inspector framed them

  • The effect of the proposed loft conversion on the character and appearance of the host dwelling and surrounding area, including whether it would preserve or enhance the character or appearance of the Osterley Park Conservation Area

What decided it

The proposed loft conversion would introduce a dominant, non-subservient roof element that would harm the character and appearance of the conservation area and the significance of the designated heritage asset, and the modest public benefits do not outweigh the great weight required to be given to conservation.

What the Inspector cited

Development plan policies
Policy CC1Policy CC2Policy CC4Policy SC7

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 Hounslow

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

  1. Allowed26 October 20266015572
    3 Chatsworth Crescent, Hounslow, TW3 2PE
  2. Dismissed23 October 20266011172
    45 Colonial Road, Feltham, TW14 8AA
  3. Dismissed23 October 20266011171
    45 Colonial Road, Feltham, TW14 8AA
  4. Allowed21 October 20266013999
    1 Cassiobury Avenue, Feltham, TW14 9JE
  5. Dismissed19 October 20266015127
    251 Jersey Road, Isleworth, TW7 4RF

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.