Radiant House 36 - 38 Mortimer Street London W1W 7RG

This site has had 3 applications since 2026.

• 26/06020/LBC Decided

  Radiant House 36 - 38 Mortimer Street London W1W 7RG

  Removal of two external steel escape platforms at 3rd and 4th floor levels to rear elevation, forming new protected escape route at second floor and additional internal alterations.

  Submitted 3 Sep 2026 Heritage and listed buildings
• 26/03217/LBC Awaiting decision

  Radiant House 36 - 38 Mortimer Street London W1W 7RG

  Replacement of three air conditioning condensers and installation of four additional air conditioning condensors in rear external stairwell at basement and ground floor levels. (Linked to 26/03105/FULL)

  Submitted 15 May 2026 Heritage and listed buildings

1. 12 May 2026

   Received by Westminster

2. 15 May 2026

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 10 July 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.

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

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.

• Radiant House 36 - 38 Mortimer Street London W1W 7RG

  26/06020/LBC Submitted 3 Sep 2026 50 yards away

  90% historically approved · decision due ~4 Nov

  Removal of two external steel escape platforms at 3rd and 4th floor levels to rear elevation, forming new protected escape route at second floor and additional internal alterations.

  Decided Heritage and listed buildings

• Radiant House 36 - 38 Mortimer Street London W1W 7RG

  26/03217/LBC Submitted 15 May 2026 50 yards away

  90% historically approved · decision due ~10 Jul

  Replacement of three air conditioning condensers and installation of four additional air conditioning condensors in rear external stairwell at basement and ground floor levels. (Linked to 26/03105/FULL)

  Awaiting decision Heritage and listed buildings 15 docs

• Basement And Ground Floor 42 - 44 Great Titchfield Street London W1W 7PY

  26/03888/FULL Submitted 15 Jun 2026 50 yards away

  88% historically approved · decision due ~27 Oct

  Minor alterations to the ground floor frontage of 42 - 44 Great Titchfield Street associated with the introduction of a new food and beverage (F&B) occupier. The works are limited to the front elevation and include repainting of the existing frontage from black to cream, installation of two branded entrance canopies over the glazed openings, branding/manifestation to the entrance door, installation of one wall-mounted framed A4 display menu, and one internally illuminated projecting flag sign.

  Awaiting decision Full applications Windows or glazing 11 docs

• Basement And Ground Floor 42 - 44 Great Titchfield Street London W1W 7PY

  26/03889/ADV Submitted 15 Jun 2026 50 yards away

  82% historically approved · decision due ~10 Aug

  Display of non illuminated other sign measuring 1m X 3.265m, 1m X 3.265m, 0.1m X 0.3m and internally illuminated projecting sign measuring 0.54m X 0.55m

  Awaiting decision Advertising 11 docs

• 30 - 32 Mortimer Street London W1W 7RE

  26/07250/FULL Submitted 22 Oct 2026 50 yards away

  88% historically approved · decision due ~22 Dec

  Erection of a fifth-floor balcony to the rear facade.

  Awaiting decision Full applications

• 30 - 32 Mortimer Street London W1W 7RE

  26/05517/ADFULL Submitted 13 Aug 2026 50 yards away

  89% historically approved · decision due ~8 Oct

  Details of samples of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 5 of planning permission dated 20th February 2025 (RN:24/09057/FULL).

  Decided Windows or glazing

• 26/07528/FULL Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

  Received 5 Nov, published by the council 6 Nov 2026 Full applications
• 26/05200/FULL Decided

  1 The Court House 165 Seymour Place London W1H 4PU

  Installation of waterproofing system to the existing lead flat roofs

  Received 3 Aug, published by the council 28 Aug 2026 Full applications
• 26/07521/FULL Awaiting decision

  Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

  Installation of one external condenser unit

  Received 4 Nov, published by the council 6 Nov 2026 Full applications
• 26/07508/FULL Awaiting decision

  Buckingham Palace The Mall London SW1A 1AA

  Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/07472/FULL Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

  Received 3 Nov, published by the council 6 Nov 2026 Full applications