Planning application
47 Chester Square London SW1W 9EA
Works: Extension Demolition
Relates to 25/08223/FULL, 26/04756/LBC
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Amendments to planning permission dated 11 June 2026 (25/08223/FULL) for: 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 alterations to link structure between the main house and mews design, and the rear roof profile to the main house. (Linked with 26/04756/LBC)
As published by the council, reference 26/04763/NMA
Application record
- Reference
- 26/04763/NMA
- Category
- Amendments
- Status
- Pending
- Received
- 16 Jul 2026
- Validated
- 16 Jul 2026
- Postcode
- SW1W 9EA
Site history
Applications at this address on the Westminster register
This site has had 20 applications since 2025: 4 approved, 0 refused.
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26/06654/ADFULL Decided
47 Chester Square London SW1W 9EA
Details of sample panel of brickwork pursuant to Condition 15 of planning permission dated 11 June 2026 (RN: 25/08223/FULL)
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26/06625/ADLBC Decided
47 Chester Square London SW1W 9EA
Details of a sample panel of brickwork for each area of work i.e. mews/rear extension etc pursuant to condition 7 of listed building dated 11th June 2026 (RN:25/08226/LBC)
-
26/05757/LBC Decided
47 Chester Square London SW1W 9EA
Investigation of dampness and damp-proofing / waterproofing works to the lower ground floor.
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26/05730/ADFULL Decided
47 Chester Square London SW1W 9EA
Detailed drawings and a bio-diversity management plan in relation to the green roof, pursuant to condition 13 of planning permission dated 11th June 2026 (25/08223/FULL)
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26/05370/ADFULL Decided
47 Chester Square London SW1W 9EA
Details of facing materials pursuant to condition 4 of planning permission dated 02 June 2026 (RN: 25/08223/FULL)
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26/05365/ADLBC Decided
47 Chester Square London SW1W 9EA
Details of facing materials pursuant to condition 3 of listed building consent dated 02 June 2026 (RN: 25/08226/LBC)
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26/04756/LBC Awaiting decision
47 Chester Square London SW1W 9EA
Rebuilding of the rear of the top floor mansard roof to the main house, with dormer windows, and new monopitch rooflight to the stairwell below; removal of awning to the closet wing and parapet raised by four brick courses to match existing height, with Portland Stone coping added; re-route downpipes to rear elevation of main house; amended detailed design of glazed link; enlarge front door to Ebury Mews entrance; addition of flues above roof to the mews house; strengthening to existing floor joists where required within main house; improvements to building services. (Linked with 26/04763/NMA)
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26/04685/ADFULL Decided
47 Chester Square London SW1W 9EA
Details of the front entrance to be simplified to reflect a more traditional modest mews style and the existing entrance pursuant to condition 16 of planning permission dated 11 June 2026 (RN: 25/08223/FULL).
-
26/04684/ADFULL Decided
47 Chester Square London SW1W 9EA
Details of an updated site waste management plan Condition 5b of planning permission dated 11 June 2026 (RN: 25/08223/FULL).
-
26/04643/ADLBC Decided
47 Chester Square London SW1W 9EA
Details of the front entrance to be simplified to reflect a more traditional modest mews style and the existing entrance pursuant to condition 8 of listed building consent dated 11 June 2026 (RN: 25/08226/LBC).
Timeline
Dates from the published record
-
16 Jul 2026
Received by Westminster
-
25 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 10 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 91 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
-
25/08223/FULL Granted
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.
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26/04756/LBC Awaiting decision
47 Chester Square London SW1W 9EA
Rebuilding of the rear of the top floor mansard roof to the main house, with dormer windows, and new monopitch rooflight to the stairwell below; removal of awning to the closet wing and parapet raised by four brick courses to match existing height, with Portland Stone coping added; re-route downpipes to rear elevation of main house; amended detailed design of glazed link; enlarge front door to Ebury Mews entrance; addition of flues above roof to the mews house; strengthening to existing floor joists where required within main house; improvements to building services. (Linked with 26/04763/NMA)
1 later application on the register refers to this one:
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26/04756/LBC Awaiting decision
47 Chester Square London SW1W 9EA
Rebuilding of the rear of the top floor mansard roof to the main house, with dormer windows, and new monopitch rooflight to the stairwell below; removal of awning to the closet wing and parapet raised by four brick courses to match existing height, with Portland Stone coping added; re-route downpipes to rear elevation of main house; amended detailed design of glazed link; enlarge front door to Ebury Mews entrance; addition of flues above roof to the mews house; strengthening to existing floor joists where required within main house; improvements to building services. (Linked with 26/04763/NMA)
What happens while it is decided
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided amendment applications in a median of 81 days. More in our guide to how long planning decisions take.
About amendment applications
An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
47 Chester Square London SW1W 9EA
90% historically approved · decision due ~16 Oct
Investigation of dampness and damp-proofing / waterproofing works to the lower ground floor.
Decided Heritage and listed buildings 11 docs -
47 Chester Square London SW1W 9EA
89% historically approved · decision due ~4 Sep
Details of the front entrance to be simplified to reflect a more traditional modest mews style and the existing entrance pursuant to condition 8 of listed building consent dated 11 June 2026 (RN: 25/08226/LBC).
Decided -
47 Chester Square London SW1W 9EA
89% historically approved · decision due ~16 Oct
Detailed drawings and a bio-diversity management plan in relation to the green roof, pursuant to condition 13 of planning permission dated 11th June 2026 (25/08223/FULL)
Decided -
60 Chester Square London SW1W 9EA
89% historically approved · decision due ~25 Aug
Detailed drawings of the CCTV, new external balustrades and dormers; and material samples, pursuant to conditions 4 and 5 of planning permission dated 9th November 2025 (RN 25/06259/FULL).
Decided Loft or dormer -
60 Chester Square London SW1W 9EA
89% historically approved · decision due ~25 Aug
Detailed drawings of the CCTV, new external balustrades and dormers; material samples; and amended third floor plan to show alteration to door opening, pursuant to conditions 4 (partial), 5, 9 of listed building consent dated 9th November 2025 (RN: 25/06260/LBC).
Decided Loft or dormer -
60 Chester Square London SW1W 9EA
89% historically approved · decision due ~11 Sep
Details of method statement for paint removal from stairs pursuant to partial discharge of condition 4 (Part 3) of listed building consent dated 11th November (RN: 25/06260/LBC).
Decided
Other amendment applications
In Westminster
-
26/07459/NMA Awaiting decision
1 Hanover Square London W1S 1HA
Amendments to planning pemrission dated 10 October 2025 (RN: 25/01558/FULL) for the: Partial demolition, refurbishment and extension of the existing building to provide a sub-basement, basement, ground plus eight storey building; infilling and stepped rear extension; excavation of a new sub-basement level; installation of new plant equipment at basement and roof level; terraces at fourth, fifth, sixth, seventh and eighth floor levels; soft and hard landscaping; reprovision of car parking; new cycle parking facilities; and associated external works. Use of the building for retail and/or restaurant (Class E) on part ground floor and office (Class E) on all other floors. NAMELY, to allow alterations to the design of the ground floor frontages on Hanover Square and St George Street.
-
26/07438/NMA Awaiting decision
29 - 31 Hill Street London W1J 5LS
Amendments to planning permission dated 1st July 2025 (RN 25/01006/FULL) for the external alterations at roof level including the creation of Level 04 roof terrace for use in association with existing office (Class E), replacement and installation of new plant and landscaping, replacement of windows, introduction of louvres, removal and replacement of rooflights, installation of new rooflight and other associated works. NAMELY, for alterations comprising of the removal of window sash boxes and weights, changes to the window mullion arrangement, the removal of two sash windows, the installation of secondary glazing, the removal of existing chamber hatch and installation of extract vent and integrated bench, the external replacement of rainwater goods and hoppers, the removal of bricks and installation of airbricks, minor demolition works, replacement of roof covering, removal of ductwork, roof plant rearrangement, the installation of a new external door to plant area, minor layout alterations and other associated works.
-
26/07389/NMA Decided
Flat 1 5 Grittleton Road London W9 2DD
Amendments to planning permission dated 04 June 2025 (RN: 25/02022/FULL), NAMELY, amendment of Condition 4 to correct the property address from 9 Aldridge Road Villas to Flat 1 5 Grittleton Road.
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26/07377/NMA Awaiting decision
60 Ledbury Road London W11 2AJ
Amendments to planning permission dated 2nd October 2025 (RN 25/04018/FULL) for the Partial demolition, refurbishment, and erection of a mansard roof extension to form a new third floor with dormers to front, side and rear elevations; to form 6 flats (Class C3) on upper floors; external plant equipment and ductwork; lower ground floor excavation to increase floor to ceiling height; replacement windows; cycle parking and associated external alterations; use of the part ground floor and lower ground floor as retail and restaurant (Class E). Site includes 60-68 Ledbury Road) NAMELY, An amendment to the basement and ground floor drawing reference numbers; amendment to the description of development, in reference to restaurant and or retail use; and amendments to C
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26/07375/NMA Awaiting decision
77 Hereford Road London W2 5BB
Amendments to planning permission dated 4th August 2026 (RN 26/03970/FULL) for the Replacement of roof terrace access stair with glazed hatch, new timber decking and front and rear roof railings to roof terrace, with infilling side window of closet wing. NAMELY, Hinged hatch access substituted by sliding hatch.