12 St James's Gardens, London, W11 4RD
Proposal
Installation of single-storey lower ground floor rear extension and closet wing rooflight; replacement front lightwell staircase; reinstatement of ground floor partition; replacement windows, cornices, doors and floor finishes; installation of kitchen, two bathrooms and building services throughout.
- Received
- 29 May 2026
- Decided
- 3 September 2026 · Grant Planning Permission/Consent
- Ward
- Norland
Boundary © HM Land Registry, © Ordnance Survey · details
This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.
- ReceivedSubmitted29 May
- ValidatedValidated29 May
- Consult.Consultation26 Jun
- TargetTarget Date24 Jul
- DecidedDecided3 Sep
Decided in 97 days
This is a planning application for a rear extension at 12 St James's Gardens, London, W11 4RD. Kensington has handled 16,719 applications of this type and approves 90% of them, typically deciding them in 56 days. This one was decided in 97 days, 6 weeks longer than Kensington's median. The site is in a conservation area, with 10 listed buildings nearby. There have been 3 other applications at this address. We hold 7,730 applications in total for the W11 postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Kensington
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Associated applications
- 202629 May
Installation of single-storey lower ground floor rear extension and closet wing rooflight; replacement front…
This applicationApprovedApplicationLB/26/01553 - 202629 May
Installation of single-storey lower ground floor rear extension and closet wing rooflight; replacement front…
ApprovedApplicationFiled alongsidePP/26/01552
Planning history at this site
3 other applications at this property, newest first.
- 20268 Jul
Replacement of existing staircase from first to second floor and raising of rear parapet.
WithdrawnApplicationLB/26/03679 - 20268 Jul
Replacement of existing staircase from first to second floor and raising of rear parapet.
WithdrawnApplicationPP/26/03678 - 20176 Mar
Prune 2 x Lime (rear)
ApprovedARB (Tree applications)ARB/17/01491
Planning constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Norland
- Article 4 direction: Article 4 - No 100+1 more
- Tree Preservation OrderCovers the site
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (20)
flood storage areas, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.
A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.
Data © Crown copyright and others · sources and licences
Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.
© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-10-09. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.
© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.
© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.
Contains Ordnance Survey data © Crown copyright and database right 2026.
Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.
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