123 Sloane Street, London, SW1X 9BW
Proposal
Internal alterations at third floor, comprising removal of existing suspended plasterboard ceiling and supporting secondary timber joists to expose existing attic space, installation of breathable thermal insulation to underside of roof, and installation of new internal lining to create double-height space.
- Received
- 11 September 2026
- Target decision date
- 2 November 2026
- Ward
- Royal Hospital
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.
- ReceivedSubmitted11 Sep
- ValidatedValidated2 Oct
- Consult.Consultation2 Oct
- TargetTarget Date2 Nov
- DecidedDecided
This is a planning application at 123 Sloane Street, London, SW1X 9BW. Kensington has handled 16,719 applications of this type and approves 90% of them, typically deciding them in 56 days. It was submitted on 11 September 2026 and is still awaiting a decision. The site is in a conservation area, with 6 listed buildings nearby. There are no previous applications recorded at this address. We hold 1,157 applications in total for the SW1X 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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Planning constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Hans Town
- 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.
Before the decision
You may need a heritage statement. Heritage & archaeology consultants near this site
A listed building is on or next to this site.
- 1.4 miLondonRTPI
- 1.5 miLondonRTPIRICS Regulated
- 1.9 miLONDONRTPI
Nearest first, within 25 miles of the site. Every firm is listed free.
What's been approved on your street?
See what the council approved and refused near this address for the project you have in mind, and the rules that apply here.