12 Whittlesey Street, London, SE1 8SZ

Planning appeal 3370817 at 12 Whittlesey Street, London, SE1 8SZ (London Borough of Lambeth) was dismissed on 29 January 2026 by Inspector Rogers J, by written representations. The main issue, as the Inspector framed it: Whether condition No.3 is reasonable and necessary in the interests of preserving the Grade II listed building or its setting or any features of special architectural or historic interest which it possesses and preserving or enhancing the character or appearance of the Roupell Street Conservation Area.

the erection of a single storey rear extension in place of the existing extension, together with the erection of 2 single storey outbuildings following the demolition of the existing outbuilding, and other associated alterations, without complying with a condition attached to planning permission Ref 23/03941/FUL, dated 19 April 2024

Authority: London Borough of Lambeth
Appeal type: householder · Householder (HAS)
Procedure: Written Representations
Development: residential · Householder developments
Inspector: Rogers J
Postcode: SE1 8SZ

Main issues, as the Inspector framed them

Whether condition No.3 is reasonable and necessary in the interests of preserving the Grade II listed building or its setting or any features of special architectural or historic interest which it possesses and preserving or enhancing the character or appearance of the Roupell Street Conservation Area

What decided it

The use of a condition controlling materials in an extension to a listed building within a conservation area is clearly necessary and reasonable given the statutory duty under the Planning (Listed Buildings and Conservation Areas) Act 1990.

What the Inspector cited

Development plan policies: Policy Q5Policy Q8Policy Q11Policy Q20Policy Q22

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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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.