®Planning appeal decision
4, Mansion House Drive, Stanmore, Middlesex, HA7 3GA
Planning appeal 3366146 at 4, Mansion House Drive, Stanmore, Middlesex, HA7 3GA (London Borough of Harrow) was dismissed on 8 October 2025 by Inspector Manley N, by written representations. The main issue, as the Inspector framed it: Whether the proposal constitutes inappropriate development in the Green Belt for the purposes of the National Planning Policy Framework and development plan policies, and the effect it would have on the openness of the Green Belt.
a “First floor front extensions & single storey rear infill extension & two storey rear/side & single storey infill extension to main house and granny annexe & rear extension to granny annexe inc. dormers to rear slope & internal alterations for wheelchair access to first floor
- Authority
- London Borough of Harrow
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Manley N
- Postcode
- HA7 3GA
Main issues, as the Inspector framed them
- Whether the proposal constitutes inappropriate development in the Green Belt for the purposes of the National Planning Policy Framework and development plan policies, and the effect it would have on the openness of the Green Belt
- Whether any harm by reason of inappropriateness, and any other harm, would be clearly outweighed by other considerations, so as to amount to the very special circumstances required to justify the proposal
What decided it
The proposal would constitute disproportionate additions over and above the size of the original building contrary to paragraph 154(c) of the Framework and cause harm to the openness of the Green Belt, with no very special circumstances demonstrated to outweigh this harm.
What the Inspector cited
- Development plan policies
- Policy DM16Policy G2Policy CS1 FPolicy CS1 B
- National Planning Policy Framework
- Paragraph 153Paragraph 154Paragraph 155
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
Town Planner Pro holds this letter. The Appeals plan opens it and every other letter we hold, all of them searchable, with the main issues and what decided each case picked out. We do not show letters on the free site because they carry people’s names and addresses.
With an account
What an account adds to this decision
More decisions in London Borough of Harrow
The authority’s record since 2016 · every decision in 2025
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- Split Decision29 April 2026332575716 Brookshill Avenue, Harrow, HA3 6RZ
- Dismissed11 December 20253365209St. Davids Pinner Hill, Pinner, HA5 3XU
- Dismissed15 October 20253369650Pinnerwood Cottage , Woodhall Road, Pinner, HA5 4UA
- Dismissed9 August 20243343857Weald Cottage Clamp Hill, Harrow Weald, Stanmore,, Harrow, London, HA7 3JL
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.