34 Belgrave Mews South London SW1X 8BT

1. 17 Nov 2025

   Received by Westminster

2. 21 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 12 Jan 2026

   Decision issued: Application Permitted

4. 20 Jul 2026

   Added to PlanIndex

Westminster granted permission on 12 January 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. 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 - 3 Belgrave Mews South London SW1X 8BT

  26/00644/NMA Submitted 4 Feb 2026 50 yards away

  93% historically approved · decision due ~1 Apr

  Amendments to planning permission dated 27 August 2024 (RN:24/03215/FULL) for demolition behind retained front facade and construction of replacement house including replacement rear extension and terrace at lower height with new shallow balcony at second floor level; replacement of the fenestration and the roof of the existing mansard to include inset PV panels and an enclosed plant deck; and reposition front door with shallower porch. namely, amendment to front door and garage door to the front elevation at ground floor level.

  Awaiting decision Amendments Extension Loft or dormer +2 2 docs
  Small domestic

• 21 Eaton Place London SW1X 8BP

  26/04818/CLLB Submitted 20 Jul 2026 50 yards away

  89% historically approved · decision due ~21 Sep

  Like for like remedial after exposure works.

  Awaiting decision 16 docs

• Basement And Ground Floor Maisonette 21 Eaton Place London SW1X 8BP

  26/00152/LBC Submitted 12 Jan 2026 50 yards away

  Replacement of external door at Lower Ground Floor level and installation of external security gate in front.

  Refused Heritage and listed buildings 14 docs

• Basement And Ground Floor Maisonette 21 Eaton Place London SW1X 8BP

  25/06595/LBC Submitted 15 Sep 2025 50 yards away

  Internal alterations at lower ground floor level, including installation of damp proofing and secondary glazing to front windows.

  Granted Heritage and listed buildings Windows or glazing 16 docs

• Flat 1 23 Eaton Place London SW1X 8BP

  26/02822/LBC Submitted 29 Apr 2026 50 yards away

  90% historically approved · decision due ~24 Jun

  Erection of single-story rear extension and associated works.

  Awaiting decision Heritage and listed buildings Extension 14 docs

• Flat 1 23 Eaton Place London SW1X 8BP

  26/02821/FULL Submitted 29 Apr 2026 50 yards away

  88% historically approved · decision due ~24 Jun

  Erection of single-story rear extension and associated works.

  Awaiting decision Full applications Extension 18 docs

• 26/06234/FULL Decided

  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
• 26/06015/FULL Decided

  129 Saltram Crescent London W9 3JT

  Erection of a two-storey rear extension.

  Received 3 Sep, published by the council 11 Sep 2026 Full applications
• 26/07382/FULL Awaiting decision

  90 Gloucester Place London W1U 6HS

  Use of the building as an embassy (sui generis)

  Received 28 Oct, published by the council 2 Nov 2026 Full applications
• 26/07363/FULL Awaiting decision

  36 Kilravock Street London W10 4HX

  Demolition of existing rear/side extension and construction of a new extension together with new glazing and doors, and changing the existing rooflights to the rear roof slope with new rooflights.

  Received 28 Oct, published by the council 2 Nov 2026 Full applications
• 26/07371/FULL Awaiting decision

  8A Randolph Road London W9 1AN

  Amalgamation of two residential units with internal refurbishment and reconfiguration. (Linked with 26/07372/LBC)

  Received 28 Oct, published by the council 2 Nov 2026 Full applications