20 Chesham Mews London SW1X 8HS

This site has had 2 applications since 2025: 1 approved, 1 refused.

• 26/00500/ADFULL Granted

  20 Chesham Mews London SW1X 8HS

  Detailed drawings of the windows pursuant to Condition 4 of planning permission dated 30th May 2025 (RN 25/01883/FULL).

  Decided 16 Mar 2026 Full applications

1. 20 Nov 2025

   Received by Westminster

2. 20 Jan 2026

   Decision issued: Application Refused

3. 10 Aug 2026

   Added to PlanIndex

Westminster refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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.

• 15 Chesham Mews London SW1X 8HS

  26/06478/FULL Submitted 22 Sep 2026 50 yards away

  88% historically approved · decision due ~25 Nov

  Erection of a single-storey conservatory at ground floor level incorporating a retractable louvred roof and glazed sliding doors.

  Awaiting decision Full applications Extension Windows or glazing
  Small domestic

• 11 - 12 Chesham Place London SW1X 8HN

  25/08627/FULL Submitted 25 Nov 2025 50 yards away

  Replacement of carrara marble treads and risers to front steps to match existing.

  Granted Full applications 20 docs

• 11 - 12 Chesham Place London SW1X 8HN

  25/08628/LBC Submitted 25 Nov 2025 50 yards away

  Replacement of carrara marble treads and risers to front steps to match existing.

  Granted Heritage and listed buildings 15 docs

• 4A Belgrave Mews West London SW1X 8HT

  25/05632/CLOPUD Submitted 12 Aug 2025 50 yards away

  Installation of an air source heat pump at roof level.

  Refused Lawful development 13 docs

• 20 Chesham Mews London SW1X 8HS

  26/00500/ADFULL Submitted 28 Jan 2026 50 yards away

  Detailed drawings of the windows pursuant to Condition 4 of planning permission dated 30th May 2025 (RN 25/01883/FULL).

  Granted Full applications Windows or glazing 9 docs

• 6 Lowndes Street London SW1X 9ET

  20/06100/ADLBC Submitted 16 Sep 2020 50 yards away

  Details of any ventilation grilles or similar associated with the internal fan coil units; the proposed grilles; where existing original floorboards or floor structure is in place and where underfloor heating is proposed; and revised consistent drawings of chimneypiece and fireplaces pursuant to Condition 4 of listed building consent dated 11 January 2019 (RN: 18/05729/LBC).

  Refused Conditions 7 docs

• 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
• 26/07167/FULL Awaiting decision

  190 - 196 Piccadilly London SW1Y 6DS

  Variation of condition 9 of planning permission dated 01 September 2026 (RN: 26/03185/FULL, which itself varied planning permission dated 11 November 2014 (RN: 14/06743/FULL)) for 'Use of part basement and part ground floor as Class A3 restaurant. Installation of new shopfronts and associated internal and external alterations including replacement roof top plant, alterations to rear elevations fronting St James's Churchyard and new extraction ducts within rear lightwell'. NAMELY, to extend the restaurant hours of use to between 0730 - 0300 hours on Mondays to Saturdays, and 0730 - 0200 hours on Sundays.

  Received 20 Oct, published by the council 22 Oct 2026 Full applications
• 26/07168/FULL Awaiting decision

  5 - 6 Leicester Square London WC2H 7NA

  Variation of condition 6 of advertisement consent dated 28th September 2026 (RN:25/04102/ADV) for the Display of three LED digital display screens; two measuring 3.25m x 1.1m and one measuring 14.5m x 1.1m. Namely, to amend condition to enable Empire Casino (as well as Cineworld) to display on the approved LED signage.

  Received 20 Oct, published by the council 22 Oct 2026 Full applications
• 26/07163/FULL Awaiting decision

  Nations House 103 Wigmore Street London W1U 1AE

  Removal of condition 8 of the planning permission dated 25 April 1995 (ref: 94/02236/FULL) for the: Demolition of rear entrance pavilion, refurbishment & extension of existing 11 storey office bldg incl. new external overcladding to front & rear facades. NAMELY, to allow use of the roofs as terraces.

  Received 20 Oct, published by the council 21 Oct 2026 Full applications