Planning appeal decision
12 Crossley Close, Biggin Hill, Westerham, TN16 3BL
Planning appeal 3345441 at 12 Crossley Close, Biggin Hill, Westerham, TN16 3BL (London Borough of Bromley) was allowed on 9 December 2024 by Inspector Sylvester G, by written representations. The main issue, as the Inspector framed it: Whether the disputed condition is necessary and reasonable in the interests of safeguarding the living conditions of the occupiers of Number 11 Crossley Close.
a detached four bedroom dwelling without complying with a condition attached to planning permission Ref 19/81/2614, dated 17 December 1981
- Authority
- London Borough of Bromley
- Appeal type
- minor · Planning Appeal
- Procedure
- Written Representations
- Development
- residential · Minor Dwellings
- Inspector
- Sylvester G
- Postcode
- TN16 3BL
Main issues, as the Inspector framed them
- Whether the disputed condition is necessary and reasonable in the interests of safeguarding the living conditions of the occupiers of Number 11 Crossley Close
What decided it
The GPDO's inherent size limitations and locational restrictions on extensions and outbuildings would prevent harm to the living conditions of neighbouring occupiers, so there was no clear justification to impose a blanket restriction on all permitted development rights.
What the Inspector cited
- Development plan policies
- Policy 6Policy 37
- National Planning Policy Framework
- Paragraph 54Paragraph 56
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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