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Planning appeal decision

Dismissed5 June 20266005856

23 Warden Avenue, Harrow, HA2 9LP

Planning appeal 6005856 at 23 Warden Avenue, Harrow, HA2 9LP (London Borough of Harrow) was dismissed on 5 June 2026 by Inspector T Law, by written representations. The main issue, as the Inspector framed it: The effect of the development on the living conditions of the neighbouring occupants of 21 Warden Avenue, with particular regard to outlook and light.

Proposed single-storey rear extension (Retrospective)

Authority
London Borough of Harrow
Appeal type
householder · Householder
Procedure
Written
Development
residential
Inspector
T Law
Postcode
HA2 9LP

Main issues, as the Inspector framed them

  • The effect of the development on the living conditions of the neighbouring occupants of 21 Warden Avenue, with particular regard to outlook and light

What decided it

The cumulative bulk and overbearing effect of the extension on the neighbouring property's outlook and sense of enclosure, which creates unacceptable harm to living conditions despite modest design mitigation measures.

What the Inspector cited

Development plan policies
Policy GR1 of the Harrow Local Plan 2021-2041Policy D3 of the London Plan (2021)Supplementary Planning Document Residential Design Guide (2010)

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

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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.

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.