Planning application
25/09311/CLOPUD
46 Eaton Place London SW1X 8AL
Proposal
Confirmation that the planning permission dated 26th April 2023 (RN: 22/05260/FULL) for the 'Use of existing buildings as two separate dwellings with associated alterations and extensions, including new rear courtyard with green living wall at lower ground and ground floor levels, creation of roof terraces at rear upper ground floor and main roof levels, alterations to terrace at first floor level, replacement rear closet wing extension at first and second floor levels, replacement of mansard roof, and replacement of windows and doors on all elevations (site includes 20 Eaton Mews North)' was lawfully implemented prior to the expiration date and that it is lawful to complete the outstanding works.
As published by the council, reference 25/09311/CLOPUD
Timeline
Dates from the published record
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23 Dec 2025
Received by Westminster
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23 Feb 2026
Decision issued: Application Permitted
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20 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
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26/02230/ADLBC Awaiting decision
52 Eaton Place London SW1X 8AL
Detailed elevations and section of the front door and its surrounds, pursuant to condition 4 of Listed Building Consent dated 25th September 2025 (25/05109/LBC)
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25/08102/ADFULL Awaiting decision
52 Eaton Place London SW1X 8AL
Details of the front door pursuant to Condition 4 of planning permission dated 25th September 2025 (RN: 25/05108/FULL).
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26/04809/FULL Awaiting decision
23 Eaton Mews North London SW1X 8AR
Erection of mansard roof extension; fenestration alterations to both elevations including Juliet balconies to first floor front elevation; new balustrade and fixed rooflight to rear roof terrace and canopy above front entrance.
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25/05109/LBC Granted
52 Eaton Place London SW1X 8AL
Alterations to rear extension at first floor level including creation of rear roof terrace at second floor level; replacement of first and second floor level front windows with double glazed timber sash windows; replacement of front door; reinstatement of period windows and doors to first floor flat, second floor flat, and the common parts; and, internal alterations to the first floor flat, second floor flat, and common parts.
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25/05108/FULL Granted
52 Eaton Place London SW1X 8AL
Alterations to rear extension at first floor level including creation of rear roof terrace at second floor level; replacement of first and second floor level front windows with double glazed timber sash windows; replacement of front door; reinstatement of period windows and doors.
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26/01225/LBC Granted
52 Eaton Place London SW1X 8AL
Internal alterations at first and second floor levels.
Other lawful development applications
In Westminster
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26/04958/CLEUD Awaiting decision
1 Sussex Square London W2 2SJ
Use of a building as mixed use as C3 (single residential dwelling) and C1 (short-stay accommodation)
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26/04971/CLOPUD Awaiting decision
Flat 23 192 Emery Hill Street London SW1P 1PN
Replacement of the existing single-glazed moving window sashes, casement panels, and balcony door leaves with slimline double-glazed timber units. The existing outer timber frames fixed into the building will be retained and will not be removed or altered. The replacement units will match the existing windows in material, design, glazing bar pattern, opening method, dimensions, and external appearance. No alterations are proposed to the building structure, external walls, openings, or window frame sizes. No new access, alterations to existing access, new streets, hardstandings, means of enclosure, or drainage works are proposed. The precise location and details of the replacement windows are shown on the accompanying drawings.
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26/04832/CLEUD Awaiting decision
Basement Flat 117 Kilburn Park Road London NW6 5LB
Use or Development in respect of the detached single-storey outbuilding within the rear garden of the applicants property.
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26/04856/CLOPUD Awaiting decision
Flat 15 192 Emery Hill Street London SW1P 1PN
Replacement of the existing single-glazed moving sashes, casement panels, and balcony door leafs with slimline double glazed timber units within the fully retained existing external timber frames.
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26/04632/CLOPUD Awaiting decision
165 Oliphant Street London W10 4EA
Installation of solar panels to generate clean, renewable energy from sunlight and reduce reliance on grid electricity and fossil fuels.