4 Sussex Street London SW1V 4RS

1. 2 Sep 2026

   Received by Westminster

2. 9 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 11 Sep 2026

   Added to PlanIndex

4. 22 Oct 2026

   Status changed to Decided

   Previously Pending.

Westminster has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

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.

• 1 Sussex Street London SW1V 4RZ

  26/04924/FULL Submitted 23 Jul 2026 50 yards away

  88% historically approved · decision due ~17 Sep

  Erection of mansard extension and new side window at second floor level.

  Decided Full applications Extension Loft or dormer +1

• 1 Sussex Street London SW1V 4RZ

  26/07386/ADFULL Submitted 29 Oct 2026 50 yards away

  89% historically approved · decision due ~24 Dec

  Details of Window, including section drawings showing the glazing bars; Door, including section drawings showing the glazing bars; Awning; pursuant to condition 3 (a, b, and c) of planning permission dated 4th September 2026 (26/04925/FULL)

  Awaiting decision Windows or glazing

• 1 Sussex Street London SW1V 4RZ

  26/07387/ADFULL Submitted 29 Oct 2026 50 yards away

  89% historically approved · decision due ~24 Dec

  Samples of the facing materials, including detailed drawings of the dormers, and windows including section drawings showing the glazing bars; pursuant to condition 3 and 4 of planning permission dated 4th September 2026 (26/04924/FULL)

  Awaiting decision Loft or dormer Windows or glazing

• 1 Sussex Street London SW1V 4RZ

  26/04925/FULL Submitted 23 Jul 2026 50 yards away

  88% historically approved · decision due ~17 Sep

  Erection of a side infill at raised ground floor level and terrace over at first floor level, with replacement window to single door.

  Decided Full applications Extension Windows or glazing

• 1 Sussex Street London SW1V 4RZ

  26/07388/ADFULL Submitted 29 Oct 2026 50 yards away

  89% historically approved · decision due ~24 Dec

  Detailed drawings of all new windows and external doors; pursuant to condition 4 of planning permission dated 23rd July 2026 (26/02493/FULL)

  Awaiting decision Windows or glazing

• 1 Sussex Street London SW1V 4RZ

  26/02525/FULL Submitted 16 Apr 2026 50 yards away

  88% historically approved · decision due ~11 Jun

  Variation of condition 1 of planning permission dated 3rd June 2024 (RN:24/01644/FULL) for the Erection of mansard roof extension including new conservation rooflight; raising existing parapet at rear elevation, associated works. Namely, side window being moved to not clash with new stairs as much, and replaced with larger window to match existing adjacent window (cill dropped) and to be clear slimlite glazed painted timber framed sash window with integral glazing bars, white internal spacers and no trickle vents.

  Awaiting decision Full applications Extension Loft or dormer +1 19 docs

• 26/07528/FULL Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

  Received 5 Nov, published by the council 6 Nov 2026 Full applications
• 26/05200/FULL Decided

  1 The Court House 165 Seymour Place London W1H 4PU

  Installation of waterproofing system to the existing lead flat roofs

  Received 3 Aug, published by the council 28 Aug 2026 Full applications
• 26/07521/FULL Awaiting decision

  Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

  Installation of one external condenser unit

  Received 4 Nov, published by the council 6 Nov 2026 Full applications
• 26/07508/FULL Awaiting decision

  Buckingham Palace The Mall London SW1A 1AA

  Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/07472/FULL Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

  Received 3 Nov, published by the council 6 Nov 2026 Full applications