11A Belgrave Square London SW1X 8PH

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

• 26/05044/FULL 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.

  Submitted 28 Jul 2026 Full applications
• 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

   Decision issued

4. 16 Sep 2026

   Status changed to Decided

   Previously Pending.

1 later application on the register refers to this one:

• 26/05044/FULL 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.

  Submitted 28 Jul 2026 Full applications

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.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• 11A Belgrave Square London SW1X 8PH

  26/05044/FULL Submitted 28 Jul 2026 50 yards away

  88% historically approved · decision due ~22 Sep

  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 Full applications 43 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

• 26/07202/LBC Awaiting decision

  Basement East And Ground Floor And First Floor 33 Weymouth Street London W1G 7BY

  Replacement of 13 doorsets with fire doors.

  Received 21 Oct, published by the council 23 Oct 2026 Heritage and listed buildings
• 26/07183/LBC Awaiting decision

  306 - 308 Regent Street London W1B 3AT

  Installation of a manually operated retractable fabric awning to the existing shopfront at 308 Regent Street, comprising an orange fabric canopy with discreet printed lettering to the front valance, together with associated supporting framework, mounting brackets and fixings to the existing fa?ade.

  Received 21 Oct, published by the council 22 Oct 2026 Heritage and listed buildings
• 26/07191/LBC Awaiting decision

  6 Wilton Place London SW1X 8RH

  Layout alterations and replacement of internal doors.

  Received 21 Oct, published by the council 22 Oct 2026 Heritage and listed buildings
• 26/07199/LBC Awaiting decision

  49 Queen's Gardens London W2 3AA

  Erection of a mansard roof extension incorporating rooflights and a rear balcony; installation of Juliet balconies at ground and first floor levels to the rear; demolition of the existing courtyard extension and erection of a single-storey infill extension; extension of the rear wing at first floor (mezzanine) and second floor levels; fenestration alterations including the installation of new windows; stucco repairs and partial rebuilding of the rear extensions; and associated internal alterations at all levels. (Linked to 26/07198/FULL)

  Received 21 Oct, published by the council 23 Oct 2026 Heritage and listed buildings
• 26/07192/LBC Awaiting decision

  119 Warwick Way London SW1V 4HS

  Conversion and internal alterations to the ground floor flat (Retrospective)

  Received 21 Oct, published by the council 23 Oct 2026 Heritage and listed buildings