Planning application
25/09171/LBC
First Floor And Second Floor Flat 84 Eaton Square London SW1W 9AG
Proposal
Internal reconfiguration of Flat B, including new fittings, fixtures, services, and finishes throughout; alterations to staircase landings with replacement balustrades and handrails; installation of new timber-framed slimline double-glazed sash windows in place of modern units; retention of historic window frames with replacement slimline double-glazing; minor internal layout adjustments, including relocation of the powder room and removal of the secondary lift; replacement of modern doors with raised-height openings; installation of new fireplaces in the Drawing Room and Principal Bedroom; introduction of underfloor heating throughout; together with associated internal and external works.
As published by the council, reference 25/09171/LBC
Timeline
Dates from the published record
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18 Dec 2025
Received by Westminster
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2 Apr 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 heritage and listed buildings applications
How this application type works
Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.
More on heritage and listed buildings applications in our guide
Nearby applications
Within 500 metres
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26/04271/ADFULL Awaiting decision
Flat D 86 Eaton Square London SW1W 9AG
Details of arrangements on-street residents car parking in the vicinity of the site pursuant to condition 8 of planning permission dated 22 May 2026 (RN: 25/08586/FULL).
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26/00883/FULL Awaiting decision
First Floor And Second Floor Flat 84 Eaton Square London SW1W 9AG
Installation of new timber framed slimline double glazed sash windows in place of modern units; and retention of historic window frames with replacement slimline double glazing. (Linked to 25/09171/LBC)
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26/04463/CLLB Awaiting decision
Flat B 80 Eaton Square London SW1W 9AP
Internal refurbishment works to replace existing flooring with laminate wooden flooring, replace existing modern and poor-quality kitchen and bathroom joinery, and built-in wardrobes with high-quality joinery, replace internal doors with like-for-like fire rated doors, and replace and upgrade existing servicing arrangements.
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25/05520/FULL Granted
Flat B 80 Eaton Square London SW1W 9AP
Replacement of steel and timber fenestration and steel-framed doors with painted timber, slim-line double glazed units and landscaping work to reinstate the rear garden with new garden lighting (Flat B, Basement).
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25/05521/LBC Granted
Flat B 80 Eaton Square London SW1W 9AP
Internal alterations comprising of removal of internal wall and replacement of existing ceilings with an acoustic and fireproof ceiling, replacement of steel and timber fenestration and steel-framed doors with painted timber, slim-line double glazed units and landscaping work to reinstate the rear garden with new garden lighting (Flat B, Basement).
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26/01370/TCA Awaiting decision
80 Eaton Square London SW1W 9AP
G1: Magnolia Grandiflora x 4 ? crown reduce by 2-3m back to previous pruning points and match heights/balance crowns. Prune to clear building by 1.5m. Due to noise restrictions, all works to be carried out using hand saws.
Other heritage and listed buildings applications
In Westminster
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26/04984/LBC Awaiting decision
47G Randolph Avenue London W9 1BQ
Installation of replacement fire surround.
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26/04997/LBC Awaiting decision
Hanover Lodge Outer Circle Regent's Park London NW1 4HB
Erection of a morning room side extension. (Linked to 26/04996/FULL)
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26/04979/LBC Awaiting decision
12 Brewer Street London W1F 0SF
Internal alterations including removal of internal enclosures; Replacement flooring, shelving and slatwall systems, staircase handrail repair and other associated joinery works.
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26/04987/LBC Awaiting decision
Basement And Ground Floor 8 Ganton Street London W1F 7QL
Repainting of the existing timber shopfront, hand-painted fascia lettering, installation of a new hanging sign using the existing projecting sign bracket, and installation of a discreet fascia-mounted LED trough light.
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26/04995/LBC Awaiting decision
Hanover Lodge Outer Circle Regent's Park London NW1 4HB
Erection of rear conservatory extensions and an entrance loggia to side with roof terrace above, together with associated landscaping and alterations. (Linked with 26/04994/FULL)