18 Belgrave Mews West London SW1X 8PX

This site has had 3 applications since 2026.

• 26/05512/ADLBC Decided

  18 Belgrave Mews West London SW1X 8PX

  Details of before and after photos of trial panel/s of the proposed masonry cleaning method/s pursuant to condition 3 of listed building consent dated 05 June 2026 (RN: 26/01147/LBC).

  Submitted 13 Aug 2026
• 26/04375/ADLBC Decided

  18 Belgrave Mews West London SW1X 8PX

  Details of a revised front elevation of 18 Belgrave Square showing the locations for the scaffold fixings pursuant to condition 5 Listed Building consent dated 5th June 2026 (RN:26/01147/LBC).

  Submitted 2 Jul 2026

1. 24 Feb 2026

   Received by Westminster

2. 8 Apr 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 3 June 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 91 days over the applications it decided in the last year.

2 later applications on the register refer to this one:

• 26/05512/ADLBC Decided

  18 Belgrave Mews West London SW1X 8PX

  Details of before and after photos of trial panel/s of the proposed masonry cleaning method/s pursuant to condition 3 of listed building consent dated 05 June 2026 (RN: 26/01147/LBC).

  Submitted 13 Aug 2026
• 26/04375/ADLBC Decided

  18 Belgrave Mews West London SW1X 8PX

  Details of a revised front elevation of 18 Belgrave Square showing the locations for the scaffold fixings pursuant to condition 5 Listed Building consent dated 5th June 2026 (RN:26/01147/LBC).

  Submitted 2 Jul 2026

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided heritage and listed building applications in a median of 119 days. More in our guide to how long planning decisions take.

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.

• 17 Belgrave Square London SW1X 8PG

  26/03054/FULL Submitted 8 May 2026 50 yards away

  88% historically approved · decision due ~10 Jul

  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.

  Awaiting decision Full applications 51 docs

• 17 Belgrave Square London SW1X 8PG

  26/03051/LBC Submitted 8 May 2026 50 yards away

  90% historically approved · decision due ~3 Jul

  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.

  Awaiting decision Heritage and listed buildings Extension 6 docs

• 17 Belgrave Square London SW1X 8PG

  26/03541/ADLBC Submitted 29 May 2026 50 yards away

  89% historically approved · decision due ~24 Jul

  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)

  Awaiting decision Conditions 3 docs

• 17 Belgrave Square London SW1X 8PG

  25/06935/FULL Submitted 26 Sep 2025 50 yards away

  Part refurbishment, part replacement, of the existing windows on all elevations of the building at 17 Belgrave Square and adjacent mews at 17 Belgrave Mews West. (Linked with 25/06936/LBC)

  Granted Full applications Windows or glazing 153 docs

• 17 Belgrave Square London SW1X 8PG

  25/06936/LBC Submitted 26 Sep 2025 50 yards away

  Part refurbishment, part replacement, of the existing windows on all elevations of the building at 17 Belgrave Square and adjacent mews at 17 Belgrave Mews West. (Linked with 25/06935/FULL)

  Granted Heritage and listed buildings Windows or glazing 153 docs

• 17 Belgrave Square London SW1X 8PG

  26/03052/ADFULL Submitted 8 May 2026 50 yards away

  88% 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

• 26/07390/LBC Awaiting decision

  40 Wigmore Street London W1U 2RX

  Installation of a non-illuminated fascia sign measuring 0.29m x 0.79m and two vinyl signs applied to inside face of the glazed shopfront each measuring 0.22m x 0.84m. (Linked with 26/06970/ADV)

  29 Oct 2026 Heritage and listed buildings
• 26/07372/LBC Awaiting decision

  8A Randolph Road London W9 1AN

  Amalgamation of two residential units with internal refurbishment and reconfiguration. (Linked with 26/07371/FULL)

  Received 28 Oct, published by the council 2 Nov 2026 Heritage and listed buildings
• 26/07332/LBC Awaiting decision

  Royal Courts Of Justice Strand London WC2A 2LL

  Replacement of one platform lift within the grade 1 listed Royal Court?s of Justice building.

  Received 27 Oct, published by the council 30 Oct 2026 Heritage and listed buildings
• 26/07336/LBC Awaiting decision

  Charing Cross Hotel Strand London WC2N 5HX

  Installation of replacement timber handrail and brackets to one flight of main staircase.

  Received 27 Oct, published by the council 30 Oct 2026 Heritage and listed buildings
• 26/07316/LBC Awaiting decision

  30 Inverness Terrace London W2 3JA

  Relocation of air conditioning units throughout to the lower ground floor lightwells within aluminium enclosure; replacement of all pipes with cast iron pipes; alteration to balconies including replacement of UPVC door with original door arrangement and replacement railing; reopening of previously infilled windows; replacement marble tiles at hallway of No.32 with Victorian floor tiles; replacement of all doors facing the communal staircase with the correct period style doors; removal of red clay tile leanto roof at first floor rear and the roof made good; removal of link bridges to the rear of the second floor and the rear of the third floor; and reopening of previously infilled windows to the stairs lobby at ground, first and second floor to No.30. (Linked with 26/07315/FULL)

  Received 26 Oct, published by the council 27 Oct 2026 Heritage and listed buildings