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Flat 3 109 Eaton Square London SW1W 9AA

26/01917/LBCApproved

Approved on 21 August 2026

Council decision: Application Permitted

Site boundary (council red line)

Proposal

Internal refurbishment and reconfiguration of Flat 3 (third and fourth floors) including rationalisation of internal layouts, renewal of kitchen and bathroom accommodation, replacement of the existing modern staircase and associated balustrade/handrail, removal of a small internal floor level change within the powder room, and minor alignment of ceiling heights within the proposed kitchen/dining area, works also include replacement of internal architectural detailing (including skirtings, architraves, cornicing, window surrounds and internal doors), replacement of existing fireplaces (where present) and upgrades to services and finishes throughout, roof level works limited to rationalisation of existing plant within the roof plant area, including relocation/concealment of condensers and removal of existing rooflights (main skylight retained).

Received
24 March 2026
  1. Received24 Mar
  2. Validated15 Apr
  3. Consult.
  4. Target
  5. Decided21 Aug

Decided in 128 days

About this application

This is a planning application for window replacement at Flat 3 109 Eaton Square London SW1W 9AA. Westminster has handled 27,108 applications of this type. This one was decided in 128 days, 11 weeks longer than Westminster's typical decision time. The site is in the Belgravia conservation area, with 5 listed buildings nearby. There has been 1 other application at this address. We hold 1,477 applications in total for the SW1W postcode area.

Application details

Postcode
SW1W 9AA

Planning application dates

Date validated
15 April 2026

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Belgravia
  • Listed building: Basement Flat 110 Eaton Square London SW1W 9AAOn or next to this site
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)

flood storage areas, listed buildings, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Associated applications

  1. 2026
    15 Apr

    Internal refurbishment and reconfiguration of Flat 3 (third and fourth floors) including rationalisation of…

    This applicationApprovedListed building consent26/01917/LBC
  2. 2026
    24 Mar

    Internal refurbishment and reconfiguration of Flat 3 (third and fourth floors) within 109 Eaton Square…

    ApprovedFull Planning Permission ApplicationRelated26/01916/FULL

Source: Westminster

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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