Planning appeal decision
18 Greystoke Avenue, Pinner, HA5 5SL
Planning appeal 3280646 at 18 Greystoke Avenue, Pinner, HA5 5SL (London Borough of Harrow) was allowed on 3 December 2021 by Inspector Somers J, by written representations. The main issue, as the Inspector framed it: the effect of the rear dormer window upon the appeal property and the character and appearance of the locality.
a Single and two storey side extension; rear dormer with Juliette balcony; Single storey rear extension; External alterations (Retrospective)
- Authority
- London Borough of Harrow
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Somers J
- Postcode
- HA5 5SL
Main issues, as the Inspector framed them
- the effect of the rear dormer window upon the appeal property and the character and appearance of the locality
What decided it
The fallback position under the General Permitted Development Order 2015, which would allow the same dormer to be constructed after completion of the approved extension, carried significant weight as a material consideration that outweighed the conflict with the development plan.
the harm to character and appearance from the dormer window was outweighed by the significant weight given to the fallback position under the GPDO
What the Inspector cited
- Development plan policies
- Policy CS1Policy DM1Residential Design Guide Supplementary Planning Document
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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