Ground Floor 23 Wimpole Street London W1G 8GP

This site has had 3 applications since 2026.

• 26/03236/LBC Awaiting decision

  Ground Floor 23 Wimpole Street London W1G 8GP

  Internal alterations to lower ground floor flat.

  Submitted 15 May 2026 Heritage and listed buildings
• 26/00832/FULL Awaiting decision

  Ground Floor 23 Wimpole Street London W1G 8GP

  Replacement windows, doors and lantern roof (Linked to 26/00833/LBC)

  Submitted 11 Feb 2026 Full applications

1. 11 Feb 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 8 April 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 66 days over the applications it decided in the last year.

• 26/00832/FULL Awaiting decision

  Ground Floor 23 Wimpole Street London W1G 8GP

  Replacement windows, doors and lantern roof (Linked to 26/00833/LBC)

  Submitted 11 Feb 2026 Full applications

1 later application on the register refers to this one:

• 26/00832/FULL Awaiting decision

  Ground Floor 23 Wimpole Street London W1G 8GP

  Replacement windows, doors and lantern roof (Linked to 26/00833/LBC)

  Submitted 11 Feb 2026 Full applications

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided heritage and listed building applications in a median of 94 days. More in our guide to how long planning decisions take.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• Ground Floor 23 Wimpole Street London W1G 8GP

  26/00832/FULL Submitted 11 Feb 2026 50 yards away

  87% historically approved · decision due ~8 Apr

  Replacement windows, doors and lantern roof (Linked to 26/00833/LBC)

  Awaiting decision Full applications Windows or glazing 12 docs

• 30B Wimpole Street London W1G 8YB

  26/03135/FULL Submitted 12 May 2026 50 yards away

  87% historically approved · decision due ~7 Jul

  Use of Basement, Ground, First and Second Floors for Medical Purposes (Use Class E (e)) for a temporary period of 20 years.

  Awaiting decision Full applications 13 docs

• Ground Floor 23 Wimpole Street London W1G 8GP

  26/03236/LBC Submitted 15 May 2026 50 yards away

  90% historically approved · decision due ~10 Jul

  Internal alterations to lower ground floor flat.

  Awaiting decision Heritage and listed buildings 10 docs

• 64 Wimpole Street London W1G 8YS

  26/01740/FULL Submitted 18 Mar 2026 50 yards away

  87% historically approved · decision due ~13 May

  Erection of a new roof terrace and green roof area at rear 2nd floor level; installation of plant and photovoltaic panels at main roof level and new mansard roof extension and installation of plant on the mews roof level; alterations at ground floor front elevation; Internal and external alterations throughout the building in connection with a rear elevation extension from first to fourth floor levels and the reconfiguration of the existing fifth floor level, installation of new double glazed windows throughout all in connection with a change of use to Class E (e) medical use.

  Awaiting decision Full applications Extension Loft or dormer +2 88 docs

• Flat 2 New Cavendish Mansions 48 New Cavendish Street London W1G 8TG

  26/00872/FULL Submitted 12 Feb 2026 50 yards away

  87% historically approved · decision due ~9 Apr

  Retrofit of existing windows, including insertion of slimline double-glazing windowpanes to front facade.

  Awaiting decision Full applications Windows or glazing 13 docs

• 45 New Cavendish Street London W1G 9TJ

  25/07902/LBC Submitted 31 Oct 2025 50 yards away

  Internal alterations at ground and lower ground level including reinstatement of staircase. (Linked with 25/07901/FULL)

  Granted Heritage and listed buildings 11 docs

• 26/04878/LBC Decided

  34 Grosvenor Street London W1K 4QU

  Internal works to facilitate the subdivision of 34 Grosvenor Street and 3 Three Kings Yard

  Received 21 Jul, published by the council 1 Aug 2026 Heritage and listed buildings
• 26/06299/LBC Awaiting decision

  Apartment 33 24 Park Crescent London W1B 1AA

  Alterations to internal partitions, door openings, doors and floor finishes.

  Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
• 26/06305/LBC Awaiting decision

  33A Dean Street London W1D 4PP

  Installation of new concrete slab with drainage channels at basement level and new fire surround in B.01.

  Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
• 26/06318/LBC Awaiting decision

  124 Hamilton Terrace London NW8 9UT

  Replacement of existing first-floor sash windows to the front and rear elevations with traditionally detailed painted timber, slim-profile double-glazed sash windows. (Linked to 26/06317/FULL)

  Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
• 26/04141/LBC Decided

  80E Randolph Avenue London W9 1BG

  Replacement of sashes in two front windows at 2nd floor level and one rear window with slimline double glazed timber sashes. (Linked with 26/04142/FULL)

  Received 23 Jun, published by the council 21 Jul 2026 Heritage and listed buildings