Planning application
46 Chester Square London SW1W 9EA
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Use of 46 Chester Square and 46 Ebury Mews together as a single dwelling (Use Class C3).
As published by the council, reference 25/07578/CLEUD
Application record
- Reference
- 25/07578/CLEUD
- Type
- Certificate of Lawfulness (existing)
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 20 Oct 2025
- Validated
- 20 Oct 2025
- Decided
- 5 Nov 2025
- Ward
- Knightsbridge & Belgravia
- Decision by
- Delegated Decision
- Postcode
- SW1W 9EA
Site history
Applications at this address on the Westminster register
This site has had 5 applications since 2025: 1 approved, 0 refused.
-
25/05498/FULL Withdrawn
46 Chester Square London SW1W 9EA
Erection of rear first floor orangery extension. (Linked RN: 25/05499/LBC)
-
25/05497/LBC Awaiting decision
46 Chester Square London SW1W 9EA
Internal and external alterations including refurbishment; replacement of ornamental scheme throughout; installation of new windows; erection of rebuilt extension at rear ground floor level between main house and the mews; erection of rear first floor level rebuilt balcony; lightwell extension; partial demolition and rebuilding of the mews building with evacuation of basement extension and roof level plant equipment. (Linked RN: 25/05494/FULL)
-
25/05494/FULL Decided
46 Chester Square London SW1W 9EA
External alterations including installation of new windows; erection of rebuilt extension at rear ground floor level between main house and the mews; erection of rear first floor level rebuilt balcony; lightwell extension, partial demolition and rebuilding of the mews building with excavation of basement extension and roof level plant equipment. (Linked RN: 25/05497/LBC)
-
25/05499/LBC Withdrawn
46 Chester Square London SW1W 9EA
Erection of rear first floor orangery extension. (Linked RN: 25/05498/FULL)
Timeline
Dates from the published record
-
20 Oct 2025
Received by Westminster
-
5 Nov 2025
Decision issued: Application Permitted
-
21 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
hgh Consulting Ltd Agent
423 applications on PlanIndex · across 42 councils · 90% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
51 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
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Open the documentsWhat this grant of permission means
Westminster granted permission on 5 November 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
47 Chester Square London SW1W 9EA
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.
Granted Heritage and listed buildings Loft or dormer Windows or glazing 50 docs -
47 Chester Square London SW1W 9EA
Variation of Condition 1 of planning permission dated 10th September 2025 (RN:24/05375/FULL) for the Demolition of No 47 Ebury Mews and the erection of a two-storey replacement mews building with new basement level. Alterations and refurbishment to No. 47 Chester Square including demolition of modern rear additions, reinstatement of lower ground floor lightwell to the rear and extension of existing lower ground floor. Construction of ground floor link from 47 Chester Square to 47 Ebury Mews, consolidation of amenity courtyard at ground floor level, other internal and external works of refurbishment to 47 Chester Square namely, to allow 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.
Granted Full applications Extension Loft or dormer +2 54 docs -
46 Chester Square London SW1W 9EA
Erection of rear first floor orangery extension. (Linked RN: 25/05499/LBC)
Withdrawn Full applications Extension 22 docs -
46 Chester Square London SW1W 9EA
90% historically approved · decision due ~26 Sep
Internal and external alterations including refurbishment; replacement of ornamental scheme throughout; installation of new windows; erection of rebuilt extension at rear ground floor level between main house and the mews; erection of rear first floor level rebuilt balcony; lightwell extension; partial demolition and rebuilding of the mews building with evacuation of basement extension and roof level plant equipment. (Linked RN: 25/05494/FULL)
Awaiting decision Heritage and listed buildings Extension Demolition +1 39 docs -
46 Chester Square London SW1W 9EA
External alterations including installation of new windows; erection of rebuilt extension at rear ground floor level between main house and the mews; erection of rear first floor level rebuilt balcony; lightwell extension, partial demolition and rebuilding of the mews building with excavation of basement extension and roof level plant equipment. (Linked RN: 25/05497/LBC)
Decided Full applications Extension Demolition +1 50 docs -
46 Chester Square London SW1W 9EA
Erection of rear first floor orangery extension. (Linked RN: 25/05498/FULL)
Withdrawn Heritage and listed buildings Extension 18 docs
Other lawful development applications
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-
26/07468/CLOPUD Awaiting decision
14 - 16 Great Portland Street London W1W 8QW
Confirmation the demolition of the existing outrigger structure at fifth floor level (the Proposed Works) constitutes the lawful commencement of development pursuant to the Permission.
-
26/07423/CLOPUD Awaiting decision
103 Elgin Avenue London W9 2NP
Painting of the decorative stonework, window frames and doors on the front elevation and front boundary wall
-
26/07454/CLOPUD Awaiting decision
10 Stratton Street London W1J 8LG
Changes to existing windows and doors
-
26/07381/CLEUD Awaiting decision
Ground Floor Rear Flat 4 Mozart Street London W10 4LA
Use of the ground floor rear flat as short-term visitor accommodation.
-
26/07339/CLOPUD Awaiting decision
123 Victoria Street London SW1E 6DE
Use of part of ground floor reception area within Class E including, but not limited to, a retail café (Class E(a)).