11A Belgrave Square London SW1X 8PH

This site has had 3 applications since 2025: 1 approved, 0 refused.

• 26/05045/LBC Decided

  11A Belgrave Square London SW1X 8PH

  Alteration of the existing roof and layout alterations to the loft level to create a concealed terrace area and additional plant space along with associated internal alterations.

  Decided 16 Sep 2026 Heritage and listed buildings
• 25/09302/CLEUD Granted

  11A Belgrave Square London SW1X 8PH

  Internal and external works including demolition of partition walls, fixtures and fittings, and lightwell excavation at lower ground level (Confirmation of lawful implementation of the planning permission dated 21st September 2022 (RN: 22/01791/FULL) for excavation works to lower ground floor and basement to achieve swimming pool depth and new storey; relocation of existing mechanical ventilation plant within the existing roof void with two grilles in roof; new ventilation shaft and metal grating in the front lightwell.

  Decided 11 Mar 2026 Lawful development

1. 28 Jul 2026

   Received by Westminster

2. 10 Aug 2026

   Added to PlanIndex

3. 16 Sep 2026

   Status changed to Decided

   Previously Pending.

• 26/05045/LBC Decided

  11A Belgrave Square London SW1X 8PH

  Alteration of the existing roof and layout alterations to the loft level to create a concealed terrace area and additional plant space along with associated internal alterations.

  Decided 16 Sep 2026 Heritage and listed buildings

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.

• 11A Belgrave Square London SW1X 8PH

  26/05045/LBC Submitted 28 Jul 2026 50 yards away

  Alteration of the existing roof and layout alterations to the loft level to create a concealed terrace area and additional plant space along with associated internal alterations.

  Decided Heritage and listed buildings 40 docs

• 11 Belgrave Square London SW1X 8PP

  22/01921/ADLBC Submitted 22 Mar 2022 50 yards away

  Details of a condition survey and schedule of repair works for the windows; and a method statement in relation to stonework repairs pursuant to conditions 4(a) and 6 of listed building consent dated 29 January 2021 (20/07063/LBC).

  Granted Conditions Windows or glazing 8 docs

• 11A Belgrave Square London SW1X 8PH

  25/09302/CLEUD Submitted 23 Dec 2025 50 yards away

  Internal and external works including demolition of partition walls, fixtures and fittings, and lightwell excavation at lower ground level (Confirmation of lawful implementation of the planning permission dated 21st September 2022 (RN: 22/01791/FULL) for excavation works to lower ground floor and basement to achieve swimming pool depth and new storey; relocation of existing mechanical ventilation plant within the existing roof void with two grilles in roof; new ventilation shaft and metal grating in the front lightwell.

  Granted Lawful development Demolition 11 docs

• 44 Wilton Crescent London SW1X 8RX

  26/06810/LBC Submitted 5 Oct 2026 50 yards away

  90% historically approved · decision due ~30 Nov

  Repair of rear faux Mansard roof at 43 Wilton Crescent and slate valley roof to 44 Wilton Crescent. Replacement of 3no. rooflights with conservation rooflights. (Linked to 26/06809/FULL)

  Awaiting decision Heritage and listed buildings Loft or dormer

• 44 Wilton Crescent London SW1X 8RX

  26/05575/LBC Submitted 17 Aug 2026 50 yards away

  90% historically approved · decision due ~12 Oct

  Replacement of slate roof coverings and associated leadwork, replacement of rooflights, removal and reinstatement of mansard slate hanging, and associated repairs to roof structures and concealed fabric.

  Decided Heritage and listed buildings Loft or dormer Roofing

• 47 Wilton Crescent London SW1X 8RX

  25/05766/ADFULL Submitted 15 Aug 2025 50 yards away

  Details of signed appendix A of the Code of Practice pursuant to Condition 15 of planning permission dated 01 October 2024 (RN23/08879/FULL)

  Granted Full applications 7 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