Planning application
25-39 Thurloe Street, London, SW7 2LQ
Works: Extension Loft or dormer Demolition Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Confirmation that the works (namely, the installation of 4no padstones and 2no steel beams) have been lawfully implemented in accordance with planning permission PP/22/03263 for demolition of mansard extensions and all roof structures to 25-39 Thurloe Street, erection of single storey mansard extension across terrace to provide additional Class B1 office floorspace and a change of use of the second floor of 29 Thurloe Street from Class B1 office to Class C3 residential, and associated works (Certificate of Lawful Existing Use/Operation)
As published by the council, reference CL/25/04775
Application record
- Reference
- CL/25/04775
- Type
- Certificates Lawful Existing Use or Dev.
- Status
- Decided
- Decision
- Grant Planning Permission/Consent
- Received
- 1 Aug 2025
- Decided
- 26 Sep 2025
- Ward
- Brompton and Hans Town
- Parish
- 02
- Postcode
- SW7 2LQ
Timeline
Dates from the published record
-
1 Aug 2025
Received by Kensington and Chelsea
-
26 Sep 2025
Decision issued: Grant Planning Permission/Consent
-
20 Jul 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
26 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Kensington and Chelsea granted permission on 26 September 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
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