Flat 3 109 Eaton Square London SW1W 9AA

This site has had 2 applications since 2026.

• 26/01917/LBC Awaiting decision

  Flat 3 109 Eaton Square London SW1W 9AA

  Internal refurbishment and reconfiguration of Flat 3 (third and fourth floors) within 109 Eaton Square 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 smaller existing rooflights (main skylight retained). (Linked to 26/01916/FULL)

  Submitted 24 Mar 2026 Heritage and listed buildings

1. 24 Mar 2026

   Received by Westminster

2. 15 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 10 June 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 65 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 89 days. More in our guide to how long planning decisions take.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• Flat 3 109 Eaton Square London SW1W 9AA

  26/01917/LBC Submitted 24 Mar 2026 1m away

  90% historically approved · decision due ~10 Jun

  Internal refurbishment and reconfiguration of Flat 3 (third and fourth floors) within 109 Eaton Square 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 smaller existing rooflights (main skylight retained). (Linked to 26/01916/FULL)

  Awaiting decision Heritage and listed buildings Loft or dormer Windows or glazing 84 docs

• 107 Eaton Square London SW1W 9AA

  25/08094/LBC Submitted 6 Nov 2025 11m away

  90% historically approved · decision due ~1 Jan

  Internal changes to some door openings, minor setting out, addition of insulation and minor changes to front entrance doors to the dwellings being built in accordance with listed building consent (RN 21/03325/LBC)

  Awaiting decision Heritage and listed buildings 8 docs

• 107 Eaton Square London SW1W 9AA

  25/07907/NMA Submitted 31 Oct 2025 12m away

  Amendments to planning permission dated 23 August 2021 (RN: 21/03324/FULL) for 'Demolition and redevelopment behind retained front and part facades as well as the demolition and reconstruction of mews properties to create two single family dwelling houses. Associated alterations and extensions include subterranean basements, which will extend beneath the mews; re-instatement of the party wall in the rear courtyard; re-instatement of entrance to no.108; rear lower ground floor extensions partially infilling the rear courtyard and with roof terraces above; construction of full height closet wing extensions; reconstruction of mansard roof extension; installation of mechanical plant; and internal alterations on all floor levels (Site includes nos. 107 - 108 Eaton Square and nos. 107 - 108 Eccleston Mews) (as amended by RN: 20/00069/NMA). Namely, internal changes to door openings, setting out and addition of insulation and minor changes to front entrance doors.

  Granted Amendments Extension Loft or dormer +1 10 docs
  Domestic

• 113 Eaton Square London SW1W 9AA

  26/02444/NMA Submitted 14 Apr 2026 25m away

  93% historically approved · decision due ~9 Jun

  Amendments to planning permission dated 6th November 2025 (RN 25/06283/FULL) for the External alterations including infill of the rear lightwell at lower ground floor level, addition of rooflights, replacement windows and doors including replacing garage doors and use of the garage as habitable space at 113 Eccleston Mews. NAMELY, Front windows of mews house changed from casement to timber, double glazed sash windows.

  Awaiting decision Amendments Extension Loft or dormer +1 7 docs

• 113 Eaton Square London SW1W 9AA

  26/00076/ADFULL Submitted 7 Jan 2026 25m away

  Details confirming omission of rendered finish to front elevation, revised rear rooflight, revised window detail, rooflights showing relationship to finished roof pitch and external doors pursuant to condition 4 and 5 of planning permission dated 6th November 2025 (RN:25/06283/FULL).

  Granted Full applications Loft or dormer Windows or glazing 16 docs

• 113 Eaton Square London SW1W 9AA

  26/09395/ADLBC Submitted 7 Jan 2026 25m away

  Details confirming omission of rendered finish to front elevation, revised rear rooflight, revised window detail, rooflights showing relationship to finished roof pitch and external doors pursuant to condition 4 and 5 of planning permission dated 6th November 2025 (RN: 25/06284/LBC). Linked to 26/00076/ADFULL

  Granted Conditions Loft or dormer Windows or glazing 15 docs

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront.

  15 Sep 2026 Full applications
• 26/06297/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Alterations to rear elevation at basement level comprising repolacement window and installation of double opening door.

  15 Sep 2026 Full applications
• 26/06234/FULL Awaiting decision

  40 Grosvenor Place London SW1X 7HJ

  Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

  11 Sep 2026 Full applications
• 26/06249/FULL Awaiting decision

  53 Wimpole Street London W1G 8YH

  Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06250/LBC)

  11 Sep 2026 Full applications
• 26/03576/FULL Decided

  15A Devonshire Terrace London W2 3DW

  Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)

  1 Jun 2026 Full applications