Planning application
26/04809/FULL
23 Eaton Mews North London SW1X 8AR
Proposal
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.
As published by the council, reference 26/04809/FULL
Timeline
Dates from the published record
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20 Jul 2026
Received by Westminster
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1 Aug 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
About full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
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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25/09311/CLOPUD Granted
46 Eaton Place London SW1X 8AL
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.
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26/02029/LBC Awaiting decision
Penthouse 95 Eaton Square London SW1W 9AQ
Relocation of two internal gas meters to balcony; Installation of one new painted cast iron airbrick to provide adequate ventilation to a laundry utility room; Replacement of two non-operational chimney pots with two chimney pots with concealed flue fans and other associated works. Linked with 26/02028/FULL
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26/02028/FULL Awaiting decision
Penthouse 95 Eaton Square London SW1W 9AQ
Variation of condition 1 of planning permission dated 16th April 2025 (RN:24/06846/FULL) for the External works including installation of replacement double glazed metal windows to front and rear elevations, creation of enlarged balcony to principal reception room. alterations to metal railings, new rooflight and replace roof hatches at main roof level, installation of sliding box lantern for access to existing roof terrace and installation of PV panels at roof level. NAMELY, to allow minor required alterations, to inlcude, relocating two internal gas meters to balcony locations externally, installation of one new painted cast iron airbrick on secondary rear facade to provide adequate ventilation to a laundry utility room, replacement of two non-operational chimney pots with two chimney pots with concealed flue fans, exchange of approved drawings referenced by Condition 1. Linked with 26/02029/LBC
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26/01453/TPO Awaiting decision
11 Belgrave Place London SW1X 8AH
T1 1 x Golden False Acacia: fell
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26/04824/ADFULL Granted
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Detailed design and specification of new blinds to NZH based on mock-up trials on-site. pursuant to condition 32 (i) of planning permission dated 8th April 2024 (23/00571/FULL).
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26/04829/ADFULL Granted
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Details of external and internal signage strategy pursuant to Condition 33(E) of planning permission dated 8th April 2024 (RN: 23/00571/FULL)
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26/04841/ADFULL Granted
29 Henstridge Place London NW8 6QD
Details of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 5 of planning permission dated 18th November 2025 (RN:25/06159).
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26/04989/FULL Awaiting decision
1 Kildare Terrace London W2 5JT
Erection of a mansard roof extending over the main house and side wing, replacement lower ground rear extension with roof terrace above, lowering of lower ground floor slab, installation of an air source heat pump in rear garden, new front boundary treatment, and new second floor window on the north elevation.
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26/04986/FULL Awaiting decision
Inver Court Inverness Terrace London W2 6JB
Replacement of combustible materials in the render facades; timber decking and plastic soffits/ fascias to terraces with non-combustible materials on the 5th and 6th floors.