2A Lyall Mews London SW1X 8DJ

This site has had 2 applications since 2026.

• 26/06136/ADFULL Awaiting decision

  2A Lyall Mews London SW1X 8DJ

  detailed drawings showing amended proposals for the first floor front elevation's fenestration (please see Informative 3.), including revised proposed front elevation and first floor plan (at 1:50), and detailed 1:10 elevations and 1:5 and 1:2 sections (through head, jamb, cill, meeting rail and glazing bars) and detailed drawings (at 1:10) and sections (at 1:5) of the replacement garage door, replacement rooflight, any replacement windows other than the first-floor front elevation fenestration, Juliet balconies and associated metalwork and rebuilt front entrance steps pursuant to condition 4 and 5 of planning permission dated 16th April 2026 (RN:26/01406/FULL)

  Submitted 8 Sep 2026

1. 5 Mar 2026

   Received by Westminster

2. 11 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 6 May 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.

1 later application on the register refers to this one:

• 26/06136/ADFULL Awaiting decision

  2A Lyall Mews London SW1X 8DJ

  detailed drawings showing amended proposals for the first floor front elevation's fenestration (please see Informative 3.), including revised proposed front elevation and first floor plan (at 1:50), and detailed 1:10 elevations and 1:5 and 1:2 sections (through head, jamb, cill, meeting rail and glazing bars) and detailed drawings (at 1:10) and sections (at 1:5) of the replacement garage door, replacement rooflight, any replacement windows other than the first-floor front elevation fenestration, Juliet balconies and associated metalwork and rebuilt front entrance steps pursuant to condition 4 and 5 of planning permission dated 16th April 2026 (RN:26/01406/FULL)

  Submitted 8 Sep 2026

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 91 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.

• 2A Lyall Mews London SW1X 8DJ

  26/06136/ADFULL Submitted 8 Sep 2026 50 yards away

  89% historically approved · decision due ~3 Nov

  detailed drawings showing amended proposals for the first floor front elevation's fenestration (please see Informative 3.), including revised proposed front elevation and first floor plan (at 1:50), and detailed 1:10 elevations and 1:5 and 1:2 sections (through head, jamb, cill, meeting rail and glazing bars) and detailed drawings (at 1:10) and sections (at 1:5) of the replacement garage door, replacement rooflight, any replacement windows other than the first-floor front elevation fenestration, Juliet balconies and associated metalwork and rebuilt front entrance steps pursuant to condition 4 and 5 of planning permission dated 16th April 2026 (RN:26/01406/FULL)

  Awaiting decision Loft or dormer Windows or glazing

• Basement And Ground Floor Maisonette 53 Eaton Place London SW1X 8DE

  20/05723/NMA Submitted 11 Sep 2020 50 yards away

  Amendments to planning permission dated 31 July 2019 (RN: 19/02607) for Amalgamation of the lower ground and ground floor flat. Excavation of a single storey basement beneath closet wing and part of rear courtyard. Lowering of the floor in front basement vault. Erection of two storey rear infill extension. Erection of mechanical plant and enclosure in rear courtyard. Alterations to rear elevation including new window openings and replacement windows and works of repair and refurbishment; Namely, minor amendments including repositioning of boiler flue and airbricks on rear ground floor elevation, installation of plant bed within lightwell paving at rear lower ground floor level and installation of green wall on party wall in rear lightwell.

  Granted Amendments Extension Windows or glazing 64 docs
  Small domestic

• Third Floor And Fourth Floor Maisonette 49 Eaton Place London SW1X 8DE

  26/01352/LBC Submitted 3 Mar 2026 50 yards away

  90% historically approved · decision due ~28 Apr

  Installation of air conditioning system with external condenser at roof level; new roof light; internal alterations and refurbishment works.

  Awaiting decision Heritage and listed buildings Loft or dormer Roofing 13 docs

• Third Floor And Fourth Floor Maisonette 49 Eaton Place London SW1X 8DE

  26/01351/FULL Submitted 3 Mar 2026 50 yards away

  87% historically approved · decision due ~28 Apr

  Installation of air conditioning condenser unit at roof level and new roof light for maintenance access.

  Awaiting decision Full applications Loft or dormer Roofing 18 docs

• Third Floor And Fourth Floor Maisonette 49 Eaton Place London SW1X 8DE

  26/03623/ADLBC Submitted 3 Jun 2026 50 yards away

  90% historically approved · decision due ~29 Jul

  Details of new doors pursuant to condition 7 of listed building consent dated 28th April 2026 (RN:26/01352).

  Awaiting decision Conditions 5 docs

• 59 Eaton Place London SW1X 8DF

  25/08951/FULL Submitted 9 Dec 2025 50 yards away

  Replacement of windows; installation of air conditioning condenser units and acoustic screen at rear lower ground floor level; formation of new door openings at lower ground floor rear elevation; installation of external spiral stair within rear courtyard; and associated external alterations.

  Granted Full applications Windows or glazing 37 docs

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront.

  Received 15 Sep, published by the council 17 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.

  Received 15 Sep, published by the council 17 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))

  Received 11 Sep, published by the council 18 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)

  Received 11 Sep, published by the council 18 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)

  Received 1 Jun, published by the council 11 Sep 2026 Full applications