12 Chesterfield Street London W1J 5JN

25/06419/ADLBCApproval of Details (ADLBC)Approved

Discharge / amendments

Approved on 6 October 2025

Council decision: Application PermittedDelegated (officer decision)

Approximate site (title boundary)

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.

Proposal

Drawings and details pursuant to condition 3 (extent of demolition and associated works to main roof level), 5 (details related to installation of internal insulation), 7 (works to internal timber joinery and plasterwork), 9 (details of internal staircase balustrading) & 10 (internal pipework in association with air conditioning equipment) of listed building consent dated 21st October 2024 (RN:24/04555/LBC)

Received: 1 September 2025
Decision level: Delegated (officer decision)
Council: City of Westminster
Ward: West End
Agent: MacAusland Design Ltd

ReceivedReceived1 Sep
ValidatedValidated9 Sep
Consult.Consultation
TargetTarget Date4 Nov
DecidedDecided6 Oct

Decided in 27 days (council typically 49)

About this application

This is an application to discharge conditions at 12 Chesterfield Street London W1J 5JN. Westminster has handled 3,063 applications of this type. This one was decided in 35 days, 2 weeks quicker than Westminster's typical decision time. The site is in the Mayfair conservation area, with 20 listed buildings nearby. There have been 6 other applications at this address. In the past year there have been 484 applications across West End. We hold 935 applications in total for the W1J postcode area.

92% of conditions 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: W1J 5JN
Application type: Approval of Details (ADLBC)
Scale / size: Small

Planning application dates

Date validated: 9 September 2025
Target decision date: 4 November 2025

Applicant and agent

Agent: MacAusland Design Ltd
Architect profile: MACAUSLAND DESIGN LIMITED
Agent address: 24 Old Burlington Street London London W1S 3AW United Kingdom

Planning decision

Statutory period: 56 days

Additional information

Comments: 0
Documents: 41

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: Mayfair
Listed building: Grade II: 12 and 13, Chesterfield Street W1On this site · +4 more
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.

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

2026
1 Oct
Details of specification for brickwork recolouring/restoration and photo of sample area pursuant to condition…
PendingListed building consentRelated26/06650/ADLBC
2025
1 Sep
Drawings and details pursuant to condition 3 (extent of demolition and associated works to main roof level)…
This applicationApprovedDischarge of conditions25/06419/ADLBC
2024
6 Jul
Modifications to the upper part of the mansard including repairs to leadwork and recolouring of the facade…
PendingFull Planning Permission ApplicationRelated24/04554/FULL
2024
6 Jul
Modifications to the upper part of the mansard including repairs to leadwork and recolouring of the facade…
ApprovedListed building consentPart of24/04555/LBC
2024
6 Jul
Erection of a closet wing extension to house a lift and internal alterations to the lower, raised ground, and…
PendingFull Planning Permission ApplicationFiled alongside24/04556/FULL
2024
6 Jul
Erection of a closet wing extension to house a lift and internal alterations to the lower, raised ground, and…
PendingListed building consentFiled alongside24/04557/LBC

Planning history at this site

6 other applications at this property, newest first.

Source: Westminster

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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