Planning appeal decision
21 Trowlock Avenue, Teddington, TW11 9QT
Planning appeal 3305515 at 21 Trowlock Avenue, Teddington, TW11 9QT (Richmond Upon Thames London Borough Council) was dismissed on 29 December 2022 by Inspector Marshall E, by written representations. The main issue, as the Inspector framed it: The impact of the proposal upon the amenity of neighbouring occupiers at 19 Trowlock Avenue with regard to overbearingness and visual intrusion.
addition of a single storey glass canopy with retractable blinds located on the rear elevation of the property
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Marshall E
- Postcode
- TW11 9QT
Main issues, as the Inspector framed them
- The impact of the proposal upon the amenity of neighbouring occupiers at 19 Trowlock Avenue with regard to overbearingness and visual intrusion
- The impact of the proposal upon the original dwellinghouse
What decided it
The cumulative depth of 7.5m from the original rear elevation, combined with the raised platform and proximity to the shared boundary, would cause unacceptable overbearing and visual intrusion to neighbouring occupiers and would not appear as a subservient addition to the original dwelling.
What the Inspector cited
- Development plan policies
- Policy LP8Policy LP1
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 appliedThe decision letter
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With an account
What an account adds to this decision


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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.
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