20 Wilton Row London SW1X 7NS

1. 8 Oct 2026

   Received by Westminster

2. 12 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 3 December 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 86 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 119 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.

• 26 Wilton Row London SW1X 7NS

  26/06421/FULL Submitted 18 Sep 2026 50 yards away

  88% historically approved · decision due ~13 Nov

  Installation of a glazed roof over the existing rear (internal) light well and a glazed platform to extend the existing balconies within the lightwell at ground floor level.

  Awaiting decision Full applications Windows or glazing

• 23 Wilton Row London SW1X 7NS

  26/01664/ADFULL Submitted 13 Mar 2026 50 yards away

  88% historically approved · decision due ~8 May

  Details of new rooflight, including any upstand pursuant to condition 4 of planning permission dated 17th June 2025 (RN:25/02431).

  Awaiting decision Full applications Loft or dormer 5 docs

• 23 Wilton Row London SW1X 7NS

  25/06110/FULL Submitted 27 Aug 2025 50 yards away

  Installation of air condenser unit within basement lightwell.

  Granted Full applications 20 docs

• 3 Wilton Row London SW1X 7NR

  25/06784/FULL Submitted 22 Sep 2025 50 yards away

  Variation of condition 1 of planning permission dated 01 October 2024 (RN24/03484/FULL) for excavation at lower ground floor level to increase internal floor to ceiling height, lowering the garden level by 300mm and alterations to existing lightwell. NAMELY, internal alterations and lowering the level at lower ground floor level.

  Granted Full applications 15 docs

• 17 Grosvenor Crescent London SW1X 7EE

  26/03745/LBC Submitted 8 Jun 2026 50 yards away

  Replacement of basement entrance door and fanlight with bullet-resistant door and glazing; installation of a gate within the existing basement stair enclosure following the removal of a section of handrail; replacement of basement level bullet-resistant window and emergency exit door; internal alterations including replacement of security counters, glazed security screens and associated partitions at ground and basement levels; refurbishment works including alterations to finishes and sanitary accommodation; replacement of furniture and fittings; and replacement of internal fire doors. (Linked with 26/03744/FULL)

  Decided Heritage and listed buildings Windows or glazing 6 docs

• 17 Grosvenor Crescent London SW1X 7EE

  26/03744/FULL Submitted 8 Jun 2026 50 yards away

  88% historically approved · decision due ~3 Aug

  Replacement of basement entrance door and fanlight with bullet-resistant door and glazing; installation of a gate within the existing basement stair enclosure following the removal of a section of handrail; replacement of basement level bullet-resistant window and emergency exit door. (Linked with 26/03745/LBC)

  Decided Full applications Windows or glazing 8 docs

• 26/05984/FULL Decided

  41 Sutherland Street London SW1V 4JX

  Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

  Received 2 Sep, published by the council 11 Sep 2026 Full applications
• 26/06134/FULL Decided

  Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG

  Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.

  Received 8 Sep, published by the council 15 Sep 2026 Full applications
• 26/07258/FULL Awaiting decision

  16A Croxley Road London W9 3HL

  Installation of air to air heat pumps to offices and bedrooms.

  Received 22 Oct, published by the council 23 Oct 2026 Full applications
• 26/07193/FULL Awaiting decision

  98 Victoria Street London SW1E 5JL

  Shopfront alterations. (Linked with 26/07194/ADV)

  Received 21 Oct, published by the council 22 Oct 2026 Full applications
• 26/07187/FULL Awaiting decision

  Ground Floor Flat 151 Portnall Road London W9 3BN

  Erection of a single storey rear extension.

  Received 21 Oct, published by the council 22 Oct 2026 Full applications