17 Belgrave Square London SW1X 8PG

This site has had 15 applications since 2025: 2 approved, 0 refused.

• 26/05327/ADLBC Decided

  17 Belgrave Square London SW1X 8PG

  Details of windows, doors, garage doors, roof lantern and new lighting and flooring in the principal rooms pursuant to condition 6 of listed building consent dated 18 August 2025 (RN: 25/03417/LBC)

  Submitted 6 Aug 2026
• 26/04850/ADLBC Awaiting decision

  17 Belgrave Square London SW1X 8PG

  Detailed drawings of garage doors, roof lantern and any new lighting and flooring in the principal rooms pursuant to condition 6 (iii) (iv) (v) of listed building 18th August 2025 (RN:25/03417/LBC)

  Submitted 20 Jul 2026 Conditions
• 26/04710/ADFULL Decided

  17 Belgrave Square London SW1X 8PG

  Details of secure cycle storage and details of how waste and recycling is going to be stored on the site pursuant to condition 16 and 19 of planning permission dated 13th December 2019 (RN:18/01324/FULL)

  Submitted 14 Jul 2026
• 26/03541/ADLBC Awaiting decision

  17 Belgrave Square London SW1X 8PG

  Detailed drawing of floor build-up of the underfloor heating system; pursuant to condition 12 of Listed building consent dated 30th May 2025 (RN 25/02106/LBC)

  Submitted 29 May 2026 Conditions
• 26/03052/ADFULL Awaiting decision

  17 Belgrave Square London SW1X 8PG

  Detailed drawings showing the roof top acoustic enclosure shall be painted light grey pursuant to condition 6 of planning permission dated 18th August 2025 (RN:25/03416/FULL)

  Submitted 8 May 2026 Full applications
• 26/03058/ADLBC Awaiting decision

  17 Belgrave Square London SW1X 8PG

  Detailed drawings showing the roof top acoustic enclosure shall be painted light grey pursuant to condition 12 of planning permission dated 18th August 2025 (RN:25/03417/LBC )

  Submitted 8 May 2026 Conditions
• 26/03059/ADLBC Awaiting decision

  17 Belgrave Square London SW1X 8PG

  detailed drawings at a scale of 1:10 and sections at 1:5 of Windows, Doors, Garage Doors, which should appear as side hung, not up and over; Roof Lantern and any new lighting and flooring in the principal rooms pursuant to discharge of condition 6 of listed building consent dated 21st August 2025 (RN: 25, 03417/LBC).

  Submitted 8 May 2026 Conditions
• 26/03054/FULL Awaiting decision

  17 Belgrave Square London SW1X 8PG

  Reconfiguration and alteration of the area between the main building and the Mews, including the erection of a pergola structure, alterations to the rear annex openings, updated rear garden layout.

  Submitted 8 May 2026 Full applications
• 26/03051/LBC Awaiting decision

  17 Belgrave Square London SW1X 8PG

  Removal of Condition 10 of listed building consent dated 18th August 2025 (RN:25/03417/LBC) for: Replacement and erection of five air condenser units within acoustic enclosure on main roof of 17 Belgrave Square, two new air condenser units within two separate enclosures on rear ground floor terrace to 17 Belgrave Mews West and internal air conditioning units. Internal and external alterations, including alteration to conservatory, internal layout changes, installation of underfloor heating system, and removal and replacement of floorboards, doors and MEP services namely, to remove the requirement to carry out a paint analysis of the principal rooms.

  Submitted 8 May 2026 Heritage and listed buildings
• 26/03053/ADFULL Awaiting decision

  17 Belgrave Square London SW1X 8PG

  Details of the elevations and sections of the new windows (scaled 1:10) showing integral glazing bars and of the new external doors (scaled 1:10) showing integral glazing bars pursuant to condition 4 of planning permission dated 21st August 2025 (RN: 25/04566/FULL) Linked to 26/03061/ADLBC.

  Submitted 8 May 2026 Full applications

1. 16 Jul 2026

   Received by Westminster

2. 25 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 10 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Westminster took a median of 64 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster's median decision took 64 days. More in our guide to how long planning decisions take.

The published feed does not state which type of application this is; the register entry on Westminster's portal will say. Our guide explains the common types.

• 17 Belgrave Square London SW1X 8PG

  26/03052/ADFULL Submitted 8 May 2026 0m away

  87% historically approved · decision due ~3 Jul

  Detailed drawings showing the roof top acoustic enclosure shall be painted light grey pursuant to condition 6 of planning permission dated 18th August 2025 (RN:25/03416/FULL)

  Awaiting decision Full applications 10 docs

• 17 Belgrave Square London SW1X 8PG

  26/03058/ADLBC Submitted 8 May 2026 0m away

  91% historically approved · decision due ~3 Jul

  Detailed drawings showing the roof top acoustic enclosure shall be painted light grey pursuant to condition 12 of planning permission dated 18th August 2025 (RN:25/03417/LBC )

  Awaiting decision Conditions 10 docs

• 17 Belgrave Square London SW1X 8PG

  26/03059/ADLBC Submitted 8 May 2026 0m away

  91% historically approved · decision due ~3 Jul

  detailed drawings at a scale of 1:10 and sections at 1:5 of Windows, Doors, Garage Doors, which should appear as side hung, not up and over; Roof Lantern and any new lighting and flooring in the principal rooms pursuant to discharge of condition 6 of listed building consent dated 21st August 2025 (RN: 25, 03417/LBC).

  Awaiting decision Conditions Windows or glazing 33 docs

• 17 Belgrave Square London SW1X 8PG

  26/03053/ADFULL Submitted 8 May 2026 0m away

  87% historically approved · decision due ~10 Jul

  Details of the elevations and sections of the new windows (scaled 1:10) showing integral glazing bars and of the new external doors (scaled 1:10) showing integral glazing bars pursuant to condition 4 of planning permission dated 21st August 2025 (RN: 25/04566/FULL) Linked to 26/03061/ADLBC.

  Awaiting decision Full applications Windows or glazing 10 docs

• 17 Belgrave Square London SW1X 8PG

  26/02370/NMA Submitted 10 Apr 2026 0m away

  93% historically approved · decision due ~5 Jun

  Amendments to planning permission dated 13th December 2019 (RN: 18/01324/FULL) for Demolition of annexe building and replacement with rear extensions to 17 Belgrave Square and excavations to create pool hall extension under garden of 17 Belgrave Square and basement beneath mews property; all in connection with the use of the mews property and 17 Belgrave Square as two single family dwelling houses. Namely to allow proposed reconfiguration and enhancement of the area between the Main House and the Mews, including the erection of a pergola structure, minor alterations to the rear annex openings, and updated rear garden layout.

  Awaiting decision Amendments Extension Demolition 26 docs
  Domestic

• 17 Belgrave Square London SW1X 8PG

  26/02371/LBC Submitted 10 Apr 2026 0m away

  90% historically approved · decision due ~5 Jun

  Internal alterations.

  Awaiting decision Heritage and listed buildings 28 docs