47 Chester Square London SW1W 9EA
Approved on 11 June 2026
Proposal
Rebuilding of the rear of the top floor mansard roof to the main house with new dormer windows and new monopitch rooflight to the stairwell below; awning removed to the closet wing; downpipes re-routed to rear elevation of main house; revisions to detailed design of glazed link; front door to Ebury Mews entrance enlarged and addition of flues above roof to the mews house.
- Submitted
- 11 November 2025
- Council
- City of Westminster
- ReceivedSubmitted11 Nov
- ValidatedValidated
- Consult.Consultation
- TargetTarget Date
- DecidedDecided11 Jun
Decided in 212 days
About this application
This is a planning application for a dormer extension at 47 Chester Square London SW1W 9EA. Westminster has handled 27,108 applications of this type. This one was decided in 212 days, 23 weeks longer than Westminster's typical decision time. The site is in the Belgravia conservation area, with 13 listed buildings nearby. There have been 16 other applications at this address. We hold 1,477 applications in total for the SW1W postcode area.
Application details
- Postcode
- SW1W 9EA
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Belgravia
- Listed building: Grade II: 42-45, CHESTER SQUARE SW1 (See details for further address information)On or next to this site
- 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
- 202628 Sep
Details of a sample panel of brickwork for each area of work i.e. mews/rear extension etc pursuant to…
ApprovedAll OtherRelated26/06625/ADLBC - 20267 Aug
Details of facing materials pursuant to condition 3 of listed building consent dated 02 June 2026 (RN…
ApprovedListed building consentRelated26/05365/ADLBC - 202610 Jul
Detailed drawing of the front entrance to be simplified to reflect a more traditional modest mews style and…
RefusedListed building consentRelated26/04643/ADLBC - 202517 Nov
Details of Site Waste Management Plan, pursuant to condition 5 of planning permission dated 10 September 2025…
ApprovedDischarge of conditionsFiled alongside25/08383/ADFULL - 202511 Nov
Variation of Condition 1 of planning permission dated 10th September 2025 (RN:24/05375/FULL
ApprovedVariation of conditions (s73)Filed alongside25/08223/FULL - 202511 Nov
Rebuilding of the rear of the top floor mansard roof to the main house with new dormer windows and new…
This applicationApprovedListed building consent25/08226/LBC
Planning history at this site
15 other applications at this property, newest first.
- 202629 Sep
Details of sample panel of brickwork pursuat to Condition 15 of planning permission dated 11 June 2026…
ApprovedAll Other26/06654/ADFULL - 202621 Aug
Investigation of dampness and damp-proofing / waterproofing works to the Lower Ground Floor.
ApprovedListed building consent26/05757/LBC - 202621 Aug
Detailed drawings and a bio-diversity management plan in relation to the green roof; pursuant to condition 13…
RefusedApplication26/05730/ADFULL - 20267 Aug
Details of facing materials pursuant to condition 4 of planning permission dated 02 June 2026 (RN…
ApprovedDischarge of conditions26/05370/ADFULL - 202616 Jul
Rebuilding of the rear of the top floor mansard roof to the main house, with dormer windows, and new…
PendingListed building consent26/04756/LBC - 202616 Jul
Amendments to planing permission dated 11 June 2026 (RN: 25/08223/FULL
PendingNon-material amendment26/04763/NMA - 202614 Jul
Details of an updated site waste management plan shall be submitted to us and approved by us in writing…
ApprovedDischarge of conditions26/04684/ADFULL - 202614 Jul
Details of the front entrance to be simplified to reflect a more traditional modest mews style and the…
RefusedDischarge of conditions26/04685/ADFULL - 20266 May
Details of facing materials including glazing, and elevations and roof plans annotated to show where the…
RefusedDischarge of conditions26/02962/ADFULL - 20261 May
Details of facing materials including glazing, and elevations and roof plans annotated to show where the…
RefusedDischarge of conditions26/02877/ADLBC - 202620 Apr
Details of vertical and horizontal sections through windows and doors, vertical sections of conservatory…
ApprovedListed building consent26/02604/ADLBC - 202620 Apr
Details of vertical and horizontal sections through windows and doors, vertical sections of conservatory…
ApprovedDischarge of conditions26/02608/ADFULL - 202612 Feb
Details of signed Appendix A pursuant to Condition 9 of planning permission dated 10 September 2025…
ApprovedDischarge of conditions26/00891/ADFULL - 20257 Nov
Details of contaminated land investigation pursuant to Condition 8 (phase 1-3) of planning permission dated…
ApprovedDischarge of conditions25/08140/ADFULL - 202513 Jun
Use of 47 Chester Square and 47 Ebury Mews together as a single dwelling (Use Class C3).
ApprovedLawful development: Existing use25/04043/CLEUD
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
- 47 Chester Square London SW1W 9EA26/02877/ADLBC · ConditionsRefused0.0 mi
- 47 Chester Square London SW1W 9EA26/02604/ADLBC · ConditionsApproved0.0 mi
- 47 Chester Square London SW1W 9EA26/02608/ADFULL · ConditionsApproved0.0 mi
- 47 Chester Square London SW1W 9EA26/04684/ADFULL · ConditionsApproved0.0 mi
- 47 Chester Square London SW1W 9EA26/00891/ADFULL · ConditionsApproved0.0 mi
For applicants and trades
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Find contractors for loft conversions near this site- Avent Roofing ServicesVerifiedWestminsterRoofing1.1 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman2.1 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering3.9 mi
- Orient Construction Consultancy LimitedVerifiedLondon5.0 mi
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