Flat 11 46 Upper Grosvenor Street London W1K 2NW

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

• 26/01789/ADFULL Awaiting decision

  Flat 11 46 Upper Grosvenor Street London W1K 2NW

  Detailed drawings of existing and proposed windows with key details pursuant to condition 2 of planning permission dated 6th November 2025 (RN: 25/05340/FULL).

  Submitted 19 Mar 2026 Full applications
• 25/05340/FULL Granted

  Flat 11 46 Upper Grosvenor Street London W1K 2NW

  Replacement of existing windows. (Flat 11, 46 Upper Grosvenor Street)

  Decided 6 Nov 2025 Full applications

1. 15 Jul 2026

   Received by Westminster

2. 25 Jul 2026

   Added to PlanIndex

3. 3 Aug 2026

   Validated

   Checked as complete and ready for consideration.

4. Decision

   Awaiting decision

   Decision expected by 28 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 91 days over the applications it decided in the last year.

• 25/05340/FULL Granted

  Flat 11 46 Upper Grosvenor Street London W1K 2NW

  Replacement of existing windows. (Flat 11, 46 Upper Grosvenor Street)

  Decided 6 Nov 2025 Full applications

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.

• Flat 11 46 Upper Grosvenor Street London W1K 2NW

  26/01789/ADFULL Submitted 19 Mar 2026 50 yards away

  88% historically approved · decision due ~14 May

  Detailed drawings of existing and proposed windows with key details pursuant to condition 2 of planning permission dated 6th November 2025 (RN: 25/05340/FULL).

  Awaiting decision Full applications Windows or glazing 5 docs

• 34 Grosvenor Square London W1K 2HD

  26/03449/ADFULL Submitted 26 May 2026 50 yards away

  88% historically approved · decision due ~21 Jul

  Details of new french doors pursuant to condition 4 of planning permission dated 17 March 2026 (RN: 25/08464/FULL)

  Awaiting decision Full applications Windows or glazing 4 docs

• 34 Grosvenor Square London W1K 2HD

  26/05600/FULL Submitted 17 Aug 2026 50 yards away

  88% historically approved · decision due ~12 Oct

  Replacement of existing external terrace in a new configuration and repositioning of entrance and steps

  Decided Full applications

• 30 Grosvenor Square London W1K 6AN

  26/00408/FULL Submitted 23 Jan 2026 50 yards away

  88% historically approved · decision due ~20 Mar

  Installation of permanent external planter boxes at ground floor level on the Upper Grosvenor Square elevation and associated works.

  Awaiting decision Full applications 13 docs

• Flat 11 46 Upper Grosvenor Street London W1K 2NW

  25/05340/FULL Submitted 30 Jul 2025 50 yards away

  Replacement of existing windows. (Flat 11, 46 Upper Grosvenor Street)

  Granted Full applications Windows or glazing 37 docs

• 41 Upper Grosvenor Street London W1K 2NH

  25/07262/FULL Submitted 8 Oct 2025 50 yards away

  External alterations including rooftop and rear extension at 41 Upper Grosvenor Street; and reconfiguration and amalgamation of existing residential accommodation (comprising 2 x 2bed and 1 x 1 bed) to provide 3 homes (1 x 2 bed and 2 x 3 bed) (Class C3) at 41 Reeves Mews; external alterations including rooftop and rear extension and terrace, loft conversion and new dormers and enlargement of basement at 41 Reeves Mews; and change of use of existing commercial use (Use Class E) to residential (Use Class C3) at lower ground of 41 Reeves Mews to facilitate shared cycle storage, refuse and plant facilities to serve both 41 Upper Grosvenor Street and 41 Reeves Mews; and associated landscaping across the site. [SITE INCLUDES 41 REEVES MEWS]

  Granted Full applications Extension Loft or dormer 53 docs

• 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