®Planning appeal decision
15 Runnelfield, South Hill Avenue, Harrow, HA1 3NY
Planning appeal 3374839 at 15 Runnelfield, South Hill Avenue, Harrow, HA1 3NY (London Borough of Harrow) was dismissed on 15 January 2026 by Inspector Lancaster K, by written representations. The main issue, as the Inspector framed it: the effect of the proposed development on the character and appearance of the area with particular regard to whether it would preserve or enhance the character or appearance of the South Hill Avenue Conservation Area.
reduction of front porch, alterations to roof of side extension to raise height, single and two storey side to rear extension, single storey side to rear extension to link main dwelling to outbuilding, alterations to roof to replace tiles and enlarge side dormers, replacement cladding to side dormers and first floor front and rear elevations, replacement windows and door in front elevation, replacement windows in side elevation, installation of doors in side elevation, installation of Juliette balcony in rear end gable, installation of sliding gate to boundary wall, raised patio and balustrade to rear, (Demolition of rear extension). Replacement of windows, wall cladding and tiles as per drawings
- Authority
- London Borough of Harrow
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Lancaster K
- Postcode
- HA1 3NY
Main issues, as the Inspector framed them
- the effect of the proposed development on the character and appearance of the area with particular regard to whether it would preserve or enhance the character or appearance of the South Hill Avenue Conservation Area
- surface water flood risk
What decided it
The cumulative harm to the character and appearance of the conservation area through the proposed extensions and infilling, combined with the failure to adequately address surface water flood risk, meant the proposal conflicted with the development plan with no material considerations of sufficient weight to indicate otherwise.
What the Inspector cited
- Development plan policies
- HC1 CD3 D.1D.11CS1.BDM1DM7DM9DM10CS1GR1GR6HE1(d)(a)CN3
- National Planning Policy Framework
- Paragraph 181Paragraph 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 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.