Flat 6 16 Mount Row London W1K 3SE

1. 3 Sep 2026

   Received by Westminster

2. 7 Oct 2026

   Validated

   Checked as complete and ready for consideration.

3. 7 Oct 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 2 December 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 86 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.

• 50 Grosvenor Street London

  25/08357/LBC Submitted 14 Nov 2025 50 yards away

  Internal alterations at lower ground, ground, first, second, third and fourth floors.

  Granted Heritage and listed buildings 73 docs

• 50 Grosvenor Street London

  26/00764/LBC Submitted 9 Feb 2026 50 yards away

  Internal works at ground and first floor levels to refurbish and fit-out office accommodation.

  Refused Heritage and listed buildings 47 docs

• 50 Grosvenor Street London

  26/00754/LBC Submitted 9 Feb 2026 50 yards away

  Creation of internal structural opening at ground floor level to provide access between 50 and 51 Grosvenor Street.

  Refused Heritage and listed buildings 18 docs

• 50 Grosvenor Street London

  26/03477/LBC Submitted 27 May 2026 50 yards away

  90% historically approved · decision due ~22 Jul

  Minor internal works at ground and first floor levels to refurbish and fit-out office accommodation (revised submission of application ref. 26/00764/LBC).

  Awaiting decision Heritage and listed buildings 33 docs

• 49 Grosvenor Street London W1K 3HP

  26/06345/LBC Submitted 16 Sep 2026 50 yards away

  90% historically approved · decision due ~11 Nov

  Internal alterations and refurbishment.

  Decided Heritage and listed buildings

• Investcorp House 48 Grosvenor Street London W1K 3HW

  26/01687/FULL Submitted 16 Mar 2026 50 yards away

  88% historically approved · decision due ~11 May

  Infill of vehicle garage access on Mount Row, infill of lightwell and skylights at ground floor level, renewing glass facade of link building, new plant on roof.

  Awaiting decision Full applications Extension 50 docs

• 26/05984/FULL Decided

  41 Sutherland Street London SW1V 4JX

  Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

  Received 2 Sep, published by the council 11 Sep 2026 Full applications
• 26/06134/FULL Decided

  Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG

  Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.

  Received 8 Sep, published by the council 15 Sep 2026 Full applications
• 26/07258/FULL Awaiting decision

  16A Croxley Road London W9 3HL

  Installation of air to air heat pumps to offices and bedrooms.

  Received 22 Oct, published by the council 23 Oct 2026 Full applications
• 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