154 New Cavendish Street London W1W 6YN

1. 13 Oct 2025

   Received by Westminster

2. 11 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 20 Apr 2026

   Decision issued: Application Permitted

4. 30 Aug 2026

   Added to PlanIndex

Westminster granted permission on 20 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. 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.

• Highwood House 148 New Cavendish Street London W1W 6YH

  13/02526/CAC Submitted 19 Mar 2013 50 yards away

  Construction of new lift shaft within existing internal courtyard area. Only demolition required will be breaking through existing window openings to form access to new lift.

  Withdrawn Heritage and listed buildings Demolition Windows or glazing 12 docs

• Highwood House 148 New Cavendish Street London W1W 6YH

  13/02525/FULL Submitted 19 Mar 2013 50 yards away

  External alterations including construction of new lift shaft from basement to fourth floor level within lightwell.

  Granted Full applications 12 docs

• 146 New Cavendish Street London W1W 6YQ

  22/03875/CLEUD Submitted 14 Jun 2022 50 yards away

  Use of the building for use(s) within Class E (Commercial, Business and Service).

  Granted Lawful development 9 docs

• 146 New Cavendish Street London W1W 6YQ

  23/00781/NMA Submitted 7 Feb 2023 50 yards away

  Amendments to planning permission dated 19th December 2022 (RN: 22/07470/FULL) for replacement ground floor entrance door on Ogle Street; alterations to fenestration and facade at ground floor level on Ogle Street and New Cavendish Street; and replacement of all windows at first to third floor level on Ogle Street and New Cavendish Street with double glazed metal windows NAMELY, retention of existing double doors to lobbied main entrance at ground floor level, but hung so as to swing outwards, and of existing double doors to North end of building.

  Granted Amendments Windows or glazing 10 docs

• 146 New Cavendish Street London W1W 6YQ

  04/03019/AD7 Submitted 20 Apr 2004 50 yards away

  Display for a temporary period of six months of a non-illuminated 'to let' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.

  Granted Advertising 2 docs

• 146 New Cavendish Street London W1W 6YQ

  23/05877/NMA Submitted 24 Aug 2023 50 yards away

  Amendments to planning permission dated 19 December 2022 (RN: 22/07470/FULL) for replacement ground floor entrance door on Ogle Street; alterations to fenestration and facade at ground floor level on Ogle Street and New Cavendish Street; and replacement of all windows at first to third floor level on Ogle Street and New Cavendish Street with double glazed metal windows; NAMELY, to change the colour of ground floor windows from black as in the approved scheme to dark bronze.

  Granted Amendments Windows or glazing 8 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
• 26/07229/FULL Awaiting decision

  5 D'arblay Street London W1F 8DL

  Alterations to the existing fixed windows to form two openable sash windows. (Linked with 26/07230/ADV)

  Received 22 Oct, published by the council 26 Oct 2026 Full applications
• 26/07224/FULL Awaiting decision

  8 Hinde Street London W1U 3BQ

  Use of the building as an Embassy (sui generis) with reversion to Class E on cessation of occupation by the Government of the United Mexican States. Erection of a flagpole to front elevation.

  Received 22 Oct, published by the council 26 Oct 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