Walnut Tree Cottage , Jackass Lane, Keston , Bromley , BR2 6AN

Planning appeal 3352735 at Walnut Tree Cottage , Jackass Lane, Keston , Bromley , BR2 6AN (London Borough of Bromley) was dismissed on 12 August 2025 by Inspector Morris T, by written representations. The main issue, as the Inspector framed it: Whether the proposal would be inappropriate development in the Green Belt, having regard to the Framework and any relevant development plan policies.

erection of single storey rear conservatory extension

Authority: London Borough of Bromley
Appeal type: householder · Householder (HAS)
Procedure: Written Representations
Development: residential · Householder developments
Inspector: Morris T
Postcode: BR2 6AN

Main issues, as the Inspector framed them

Whether the proposal would be inappropriate development in the Green Belt, having regard to the Framework and any relevant development plan policies
The effect of the proposal on the openness of the Green Belt
If the proposal would be inappropriate, whether the harm by reason of inappropriateness and any other harm is clearly outweighed by other considerations, so as to amount to the very special circumstances necessary to justify it

What decided it

The proposal would constitute inappropriate development in the Green Belt by reason of disproportionate additions to the original building, and the harm to the Green Belt is not clearly outweighed by other considerations.

What the Inspector cited

Development plan policies: Policy G2 of the London Plan 2021Policy 49 of the Bromley Local Plan 2019Policy 51 of the Bromley Local Plan 2019
National Planning Policy Framework: Paragraph 142Paragraph 153Paragraph 154

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.

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The decision letter

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More decisions in London Borough of Bromley

The authority’s record since 2016 · every decision in 2025

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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.