11 - 12 William Street London SW1X 9HL
Approved on 4 June 2026
Proposal
Minor internal works to lower floors and installation of part external goods lift. [Linked to 26/02238/LBC]
- Received
- 2 April 2026
- Council
- City of Westminster
- Ward
- Knightsbridge & Belgravia
- Agent
- Monmouth Planning Ltd
- ReceivedReceived2 Apr
- ValidatedValidated2 Apr
- Consult.Consultation
- TargetTarget Date28 May
- DecidedDecided4 Jun
Decided in 63 days (council typically 49)
About this application
This is a full planning application at 11 - 12 William Street London SW1X 9HL. Westminster has handled 4,484 applications of this type. This one was decided in 63 days, 2 weeks longer than Westminster's typical decision time. The site is in the Albert Gate conservation area, with 6 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 383 applications across Knightsbridge & Belgravia. We hold 1,285 applications in total for the SW1X postcode area.
86% of full applications at City of Westminster were approved. Across all application types, the council typically decides in about 7 weeks (median).
Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street
Application details
- Postcode
- SW1X 9HL
- Application type
- Full Planning Permission Application
- Scale / size
- Small
Planning application dates
- Date validated
- 2 April 2026
- Target decision date
- 28 May 2026
Applicant and agent
- Agent
- Monmouth Planning Ltd
- Agent address
- 38A Monmouth Street LONDON WC2H 9EP
Planning decision
- Statutory period
- 56 days
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Albert Gate
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (21)
flood storage areas, tree preservation orders, 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 2026-11-03. 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.
Associated applications
- 20262 Apr
Minor internal works to lower floors and installation of part external goods lift. [Linked to 26/02238/LBC
This applicationApprovedFull26/02237/FULL - 20262 Apr
Minor internal works to lower floors and installation of part external goods lift. [Linked to 26/02237/FULL
ApprovedListed building consentPart of26/02238/LBC
Planning history at this site
4 other applications at this property, newest first.
- 202617 Sep
Refurbishment of existing shopfront, installation of retractable awnings, new fascia signage, illuminated…
PendingListed building consent26/06364/LBC - 202616 Sep
Display of an externally illuminated (back lit) fascia sign measuring 1.4m x 0.3m and an internally…
PendingAdvertisement consent26/06356/ADV - 202616 Sep
Refurbishment of existing shopfront, installation of retractable awnings, replacement entrance steps and…
PendingAll Other26/06355/FULL - 202611 Sep
Details of the ventilation system to get rid of cooking smells, including details of how it will be built and…
ApprovedApplication26/06243/ADFULL
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Around this site
Nearby applications
- 11 - 12 William Street London SW1X 9HL26/02238/LBC · HeritageApproved0.0 mi
- 8 - 9 William Street London SW1X 9HL25/01069/ADFULL · ConditionsApproved0.0 mi
- 8 - 9 William Street London SW1X 9HL26/02627/ADV · AdvertisingApproved0.0 mi
- 8 - 9 William Street London SW1X 9HL25/01290/ADLBC · ConditionsApproved0.0 mi
- 14 Kinnerton Place South London SW1X 8EH26/04392/FULL · FullAwaiting decision0.0 mi
For applicants and trades
Contractors near this project
- Avent Roofing ServicesVerifiedWestminsterRoofing0.9 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman1.7 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering4.5 mi
- Orient Construction Consultancy LimitedVerifiedLondon4.9 mi
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