25 Belgrave Square London SW1X 8QD

This site has had 6 applications since 2010: 4 approved, 0 refused.

• 26/01361/ADFULL Awaiting decision

  25 Belgrave Square London SW1X 8QD

  Details of all new windows pursuant to Condition 4 (part) of planning permission dated 12 February 2025 (RN: 24/06912/FULL)

  Submitted 3 Mar 2026 Full applications
• 26/01353/ADLBC Awaiting decision

  25 Belgrave Square London SW1X 8QD

  Details of new windows and external doors pursuant to Condition 3 of listed building consent dated 12 February 2025 (RN: 24/06901/LBC)

  Submitted 3 Mar 2026 Conditions
• 12/03963/FULL Granted

  25 Belgrave Square London SW1X 8QD

  Installation of two fan coil units within an enclosure to the rear ground floor level. Internal alterations including the blocking up of a door to vaults at lower ground floor level and replacing door with a window and formation of a store and associated alterations at second floor level.

  Decided 16 Oct 2012 Full applications
• 12/04629/LBC Granted

  25 Belgrave Square London SW1X 8QD

  Installation of two fan coil units within an enclosure to the rear ground floor level. Internal alterations including the blocking up of a door to vaults at lower ground floor level and replacing door with a window and formation of a store and associated alterations at second floor level.

  Decided 16 Oct 2012 Heritage and listed buildings
• 10/02439/LBC Granted

  25 Belgrave Square London SW1X 8QD

  Alterations to lightwell including infill extension beneath access bridge, installation of disabled accessible lift with associated works to railings/gates, new fenestration; new skylight to rear extension. Internal alterations at lower ground, ground and second floors.

  Decided 11 May 2010 Heritage and listed buildings

1. 7 May 2025

   Received by Westminster

2. 4 Jun 2025

   Validated

   Checked as complete and ready for consideration.

3. 17 Jun 2025

   Decision issued: Application Permitted

4. 10 Aug 2026

   Added to PlanIndex

Westminster granted permission on 17 June 2025, 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.

• 25 Belgrave Square London SW1X 8QD

  26/01361/ADFULL Submitted 3 Mar 2026 50 yards away

  88% historically approved · decision due ~28 Apr

  Details of all new windows pursuant to Condition 4 (part) of planning permission dated 12 February 2025 (RN: 24/06912/FULL)

  Awaiting decision Full applications Windows or glazing 4 docs

• 25 Belgrave Square London SW1X 8QD

  26/01353/ADLBC Submitted 3 Mar 2026 50 yards away

  89% historically approved · decision due ~28 Apr

  Details of new windows and external doors pursuant to Condition 3 of listed building consent dated 12 February 2025 (RN: 24/06901/LBC)

  Awaiting decision Conditions Windows or glazing 3 docs

• 25 Belgrave Square London SW1X 8QD

  12/03963/FULL Submitted 19 Apr 2012 50 yards away

  Installation of two fan coil units within an enclosure to the rear ground floor level. Internal alterations including the blocking up of a door to vaults at lower ground floor level and replacing door with a window and formation of a store and associated alterations at second floor level.

  Granted Full applications Windows or glazing

• 25 Belgrave Square London SW1X 8QD

  12/04629/LBC Submitted 19 Apr 2012 50 yards away

  Installation of two fan coil units within an enclosure to the rear ground floor level. Internal alterations including the blocking up of a door to vaults at lower ground floor level and replacing door with a window and formation of a store and associated alterations at second floor level.

  Granted Heritage and listed buildings Windows or glazing

• 25 Belgrave Square London SW1X 8QD

  10/02439/LBC Submitted 16 Mar 2010 50 yards away

  Alterations to lightwell including infill extension beneath access bridge, installation of disabled accessible lift with associated works to railings/gates, new fenestration; new skylight to rear extension. Internal alterations at lower ground, ground and second floors.

  Granted Heritage and listed buildings Extension Windows or glazing 2 docs

• 1 - 3 Belgrave Mews South London SW1X 8BT

  25/07399/NMA Submitted 13 Oct 2025 50 yards away

  Amendments to planning permission dated 27th 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, to allow amendments to ground floor rear fenestration.

  Granted Amendments Extension Loft or dormer +2 4 docs
  Small domestic

• 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