52 Jermyn Street London SW1Y 6LX
Approved on 26 March 2026
Council decision: Application PermittedDelegated (officer decision)
Proposal
Installation of one external condenser unit at first-floor roof level and installation of lourves to first floor lightwell window.
- Received
- 22 December 2025
- Decision level
- Delegated (officer decision)
- Council
- City of Westminster
- Ward
- St James's
- ReceivedReceived22 Dec
- ValidatedValidated22 Dec
- Consult.Consultation
- TargetTarget Date16 Feb
- DecidedDecided26 Mar
Decided in 94 days (council typically 49)
About this application
This is a heritage application for window replacement at 52 Jermyn Street London SW1Y 6LX. Westminster has handled 2,677 applications of this type. This one was decided in 94 days, 6 weeks longer than Westminster's typical decision time. The site is in the St James's conservation area, with 9 listed buildings nearby. There have been 9 other applications at this address. In the past year there have been 478 applications across St James's. We hold 969 applications in total for the SW1Y postcode area.
93% of heritage 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
- SW1Y 6LX
- Application type
- Listed Building Consent Application
- Scale / size
- Small
Planning application dates
- Date validated
- 22 December 2025
- Consultation expiry
- 25 March 2026
- Target decision date
- 16 February 2026
Applicant and agent
- Agent
- DP9
- Agent address
- 100 Pall Mall London SW1Y 5NQ
Planning decision
- Statutory period
- 56 days
Publicity
- Last advertised
- 4 March 2026
- Advertisement expiry
- 25 March 2026
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: St James's
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed+1 more
- 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
- 202522 Dec
Installation of one external condenser unit at first-floor roof level and installation of lourves to first…
ApprovedFull Planning Permission ApplicationFiled alongside25/09259/FULL - 202522 Dec
Installation of one external condenser unit at first-floor roof level and installation of lourves to first…
This applicationApprovedListed building consent25/09260/LBC
Planning history at this site
8 other applications at this property, newest first.
- 20261 Jul
Detailed drawings of external windows, doors and fireplace pursuant to condition 3 of Listed Building Consent…
ApprovedListed building consent26/04341/ADLBC - 20261 Jul
Detailed drawings of external windows and doors pursuant to condition 4 of planning permission dated 10th…
ApprovedApplication26/04353/ADFULL - 202516 Oct
Installation of an external door opening, window, and staircase to the central link block to provide access…
ApprovedListed building consent25/07508/LBC - 202516 Oct
Installation of an external door opening, window, and staircase to the central link block to provide access…
ApprovedFull Planning Permission Application25/07507/FULL - 200416 Dec
Refurbishment of existing office suite to include removal of internal partitions to office, alterations to…
ApprovedApplication for full Planning Permission04/09959/FULL - 200416 Dec
Alterations to existing layout of tea room and WC. Relocation/replacement of some doors and all new windows…
ApprovedListed building consent04/09967/LBC - 200220 Sep
Installation of air conditioning condenser unit within lightwell at first floor level.
ApprovedListed building consent02/07335/LBC - 200220 Sep
Installation of air conditioning condenser unit within lightwell at first floor level.
ApprovedFull Planning Permission Application02/07334/FULL
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
- 52 Jermyn Street London SW1Y 6LX25/09259/FULL · FullApproved0.0 mi
- 52 Jermyn Street London SW1Y 6LX25/07507/FULL · FullApproved0.0 mi
- 52 Jermyn Street London SW1Y 6LX25/07508/LBC · HeritageApproved0.0 mi
- 52 Jermyn Street London SW1Y 6LX02/07335/LBC · HeritageApproved0.0 mi
- 52 Jermyn Street London SW1Y 6LX02/07334/FULL · FullApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for roofing near this site- Avent Roofing ServicesVerifiedWestminsterRoofing0.1 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman1.1 mi
- Orient Construction Consultancy LimitedVerifiedLondon3.9 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering4.8 mi
Planning something similar?
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