Third Floor Mappin House 4 Winsley Street London W1W 8HF

This site has had 2 applications since 2025: 2 approved, 0 refused.

• 25/08684/LBC Granted

  Third Floor Mappin House 4 Winsley Street London W1W 8HF

  Removal and replacement of air conditioning units at roof level, and internal alterations to office space at third floor level. (Linked with 25/08683/FULL)

  Decided 2 Apr 2026 Heritage and listed buildings

1. 27 Nov 2025

   Received by Westminster

2. 7 Apr 2026

   Decision issued: Application Permitted

3. 20 Jul 2026

   Added to PlanIndex

• 25/08684/LBC Granted

  Third Floor Mappin House 4 Winsley Street London W1W 8HF

  Removal and replacement of air conditioning units at roof level, and internal alterations to office space at third floor level. (Linked with 25/08683/FULL)

  Decided 2 Apr 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 25/08684/LBC Granted

  Third Floor Mappin House 4 Winsley Street London W1W 8HF

  Removal and replacement of air conditioning units at roof level, and internal alterations to office space at third floor level. (Linked with 25/08683/FULL)

  Decided 2 Apr 2026 Heritage and listed buildings

Westminster granted permission on 7 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.

• Third Floor Mappin House 4 Winsley Street London W1W 8HF

  25/08684/LBC Submitted 27 Nov 2025 50 yards away

  Removal and replacement of air conditioning units at roof level, and internal alterations to office space at third floor level. (Linked with 25/08683/FULL)

  Granted Heritage and listed buildings 27 docs

• 158 Oxford Street London W1D 1LZ

  26/01191/LBC Submitted 25 Feb 2026 50 yards away

  90% historically approved · decision due ~8 Jul

  Installation of 11 metres of fibre telecommunications cable from a fibre termination box in the basement telecoms room, to a communications cabinet located in the ground floor managers office.

  Awaiting decision Heritage and listed buildings 10 docs

• Ground Floor 156 Oxford Street London W1D 1ND

  26/02551/LBC Submitted 17 Apr 2026 50 yards away

  90% historically approved · decision due ~12 Jun

  Retrospective consent for the replacement of non-original pavement lights and associated structural repairs and below ground waterproofing remedial works.

  Awaiting decision Heritage and listed buildings 12 docs

• 156 Oxford Street London W1D 1ND

  25/08414/FULL Submitted 18 Nov 2025 50 yards away

  Installation of a new shopfront including internal fit out works and refurbishments at ground floor level; signage and other associated works. (Linked to 25/08415/LBC)

  Granted Full applications Windows or glazing 24 docs

• 156 Oxford Street London W1D 1ND

  25/08415/LBC Submitted 18 Nov 2025 50 yards away

  Installation of a new shopfront including internal fit out works and refurbishments at ground floor level; signage and other associated works. (Linked to 25/08414/FULL & 25/08091/ADV)

  Granted Heritage and listed buildings Windows or glazing 25 docs

• 156 Oxford Street London W1D 1ND

  25/08091/ADV Submitted 6 Nov 2025 50 yards away

  Display of one internally illuminated fascia sign (letters only) measuring 3.2m x 0.4m. (Linked iwth 25/08415/LBC)

  Granted Advertising 13 docs

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront with Medication Dispensing Outlet.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06297/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Alterations to rear elevation at basement level comprising replacement window and installation of double opening door.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06294/FULL Awaiting decision

  15 Eaton Mews South London SW1W 9HP

  Installation of railings and sliding lantern light at main roof level in connection with the use of the roof as a terrace.

  Received 15 Sep, published by the council 22 Sep 2026 Full applications
• 26/06273/FULL Awaiting decision

  9A Grosvenor Square London W1K 5AE

  Installation of new natural Portland Stone step surfaces to the two highway facing front entrance doors. (Linked to 26/05473/LBC)

  Received 14 Sep, published by the council 22 Sep 2026 Full applications
• 26/06277/FULL Awaiting decision

  Hospital 60 Grove End Road London NW8 9NH

  Variation of conditions 1 and removal of condition 6 of planning permission dated 12th November 2019 (RN 19/07202/FULL) for the Variation of condition 12 of planning permission dated 21 June 2013 (RN: 13/01330/FULL) for the: Demolition of single storey block to north east elevation of main hospital building. Erection of three storey building (plus basement level) with link to existing hospital fronting onto Grove End Road and erection of two storey extension to the main entrance building, both to provide additional hospital accommodation (Class D1). Installation of mechanical plant and associated external alterations. NAMELY, to include amended phase 2 drawings and condition 6 to be removed as the as approved 11 car parking space are no longer proposed and the car lift is no longer shown on the amended plans.

  Received 14 Sep, published by the council 22 Sep 2026 Full applications