Admiralty Arch The Mall London SW1A 2WH
Approved on 4 March 2026
Proposal
Alterations to existing rooflight and chimney; Lift extension; and other associated works.
- Received
- 17 October 2025
- Council
- City of Westminster
- Ward
- St James's
- Agent
- DP9 Ltd
- ReceivedReceived17 Oct
- ValidatedValidated17 Oct
- Consult.Consultation
- TargetTarget Date12 Dec
- DecidedDecided4 Mar
Decided in 138 days (council typically 49)
About this application
This is a heritage application for an extension at Admiralty Arch The Mall London SW1A 2WH. Westminster has handled 2,677 applications of this type. This one was decided in 138 days, 13 weeks longer than Westminster's typical decision time. The site is in the Trafalgar Square conservation area, with 9 listed buildings nearby. There have been 21 other applications at this address. In the past year there have been 478 applications across St James's. We hold 1,263 applications in total for the SW1A 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.See what's approved near your address
Application details
- Postcode
- SW1A 2WH
- Application type
- Listed Building Consent Application
- Scale / size
- Small
Planning application dates
- Date validated
- 17 October 2025
- Consultation expiry
- 19 November 2025
- Target decision date
- 12 December 2025
Applicant and agent
- Agent
- DP9 Ltd
- Agent address
- 100 Pall Mall London SW1Y 5NQ United Kingdom
Planning decision
- Statutory period
- 56 days
Publicity
- Last advertised
- 29 October 2025
- Advertisement expiry
- 19 November 2025
Site constraints
Designations that overlap or adjoin the site outline.
- Flood zone 3: High probability (rivers and sea)Part of the site
- Conservation area: Trafalgar SquarePart of the site · +1 more
- Listed building: Grade I: Admiralty Arch, First Sea Lord'S Residence and Offices, Balustrades and StepsOn this site · +3 more
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed
- Brownfield land register: Admiralty Arch The Mall London SW1A 2DYRegister site at or near this address · +1 more
Also checked, none recorded (19)
flood storage areas, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, 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 and heritage coasts.
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
- 202521 Oct
Amendments to planning permission dated 6th January 2025 (RN:24/03757/FULL
ApprovedNon-material amendmentFiled alongside25/07589/NMA - 202521 Oct
Details of the new cage lifts, showing appearance and relationship to historic fabric pursuant to condition…
ApprovedListed building consentFiled alongside25/07638/ADLBC - 202517 Oct
Alterations to existing rooflight and chimney; Lift extension; and other associated works.
This applicationApprovedListed building consent25/07552/LBC
Planning history at this site
20 other applications at this property, newest first.
- 202624 Sep
Amendments to planning permission dated 06 January 2025 (RN:24/03757/FULL
PendingNon-material amendment26/06556/NMA - 202624 Sep
Addition of roof parasols, canopies, and a semi enclosed weather proofing system with retractable roof and…
PendingListed building consent26/06555/LBC - 202624 Sep
Addition of roof parasols, canopies, and a semi enclosed weather proofing system with retractable roof and…
PendingAll Other26/06554/FULL - 202623 Jul
Details of internal lighting to principal rooms of North Block pursuant to Condition 4 (xii) of listed…
ApprovedListed building consent26/04932/ADLBC - 202623 Jul
Detailed photographs of the facing materials you will use, including glazing, and elevations and roof plans…
ApprovedListed building consent26/04939/ADLBC - 202623 Jul
Details of a supplementary acoustic report pursuant to conditoin 14 of planning permission dated 6th January…
ApprovedApplication26/04923/ADFULL - 202623 Jul
Details of the lift doors pursuant to condition 15 of listed building consent dated 21st May 2025 (RN…
ApprovedListed building consent26/04933/ADLBC - 202621 Jul
Details of Servicing and Operational Management Plan for the hotel; pursuant to condition 5 of planning…
ApprovedDischarge of conditions26/04871/ADFULL - 202621 Jul
Details of the ventilation system for the fifth floor restaurant pursuant to condition 28 of planning…
ApprovedApplication26/04863/ADFULL - 202622 Jun
Details of works of restoration and repair to windows and doors pursuant to condition 2 (part) of listed…
ApprovedDischarge of conditions26/04116/ADLBC - 20268 Jun
Detailed drawings of a hard and soft landscaping scheme which includes the number, size, species and position…
ApprovedDischarge of conditions26/02854/ADFULL - 20268 Jun
Details of the design, layout and operation of the setting down and picking up facility for non-hotel guests…
ApprovedDischarge of conditions26/02853/ADFULL - 202617 Apr
Detailed drawings of the new external signage pursuant to condition 4 (Part XIX) of listed building consent…
ApprovedListed building consent26/02567/ADLBC - 202631 Mar
Details of the layout of the residential units pursuant to condition 26 of planning permission dated 16th…
PendingDischarge of conditions26/02146/ADFULL - 202631 Mar
Details of drawings of the extension and alterations of main oval staircase pursuant to Condition 4 (ii) of…
ApprovedDischarge of conditions26/02145/ADLBC - 202621 Jan
Details of The new external timber panelled doors to the restaurant and glazed fan light; The new fire escape…
ApprovedDischarge of conditions26/00339/ADFULL - 202620 Jan
Details of cycle parking for the residential unit(s) pursuant condition 28 of planning permission dated 16…
ApprovedDischarge of conditions26/00317/ADFULL - 202620 Jan
Details of rooftop perimeter railings, pursuant condition 22(viii) of planning permission dated 16th June…
ApprovedDischarge of conditions26/00316/ADFULL - 202620 Jan
Details of rooftop terrace boundary treatment and furniture pursuant to Condition 18 of planning permission…
RefusedDischarge of conditions26/00313/ADFULL - 202620 Jan
Details of rooftop terrace boundary treatment and furniture pursuant to Condition 16 of listed building…
RefusedListed building consent26/00315/ADLBC
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
- Admiralty Arch The Mall London SW1A 2WH25/07589/NMA · AmendmentApproved0.0 mi
- Admiralty Arch The Mall London SW1A 2WH26/00339/ADFULL · ConditionsApproved0.0 mi
- Admiralty Arch The Mall London SW1A 2WH26/02145/ADLBC · ConditionsApproved0.0 mi
- Admiralty Arch The Mall London SW1A 2DY17/08515/CLEUD · AmendmentApproved0.0 mi
- Admiralty Arch The Mall London SW1A 2WH26/00315/ADLBC · ConditionsRefused0.0 mi
For applicants and trades
Consultants on this application
- DP9 Limited · Agent for this application
Contractors near this project
Find contractors for extensions near this site- Avent Roofing ServicesVerifiedWestminsterRoofing0.5 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman1.3 mi
- Orient Construction Consultancy LimitedVerifiedLondon3.7 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering4.7 mi
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