10 Buckingham Gate London SW1E 6LA

This site has had 2 applications since 2026.

• 26/06922/LBC Awaiting decision

  10 Buckingham Gate London SW1E 6LA

  Replacement of window with door at upper ground floor, installation of external platform lift and associated entrance alterations; internal alterations including installation of new lift and WCs; installation of internal partitions and formation and alteration of openings, alterations to internal doors, windows and finishes, installation of secondary glazing, and installation of suspended ceilings; installation of air source heat pumps, photovoltaic panels and associated plant at roof level; installation of ventilation equipment; and associated works. (Linked with 26/06921/FULL)

  Submitted 9 Oct 2026 Heritage and listed buildings

1. 9 Oct 2026

   Received by Westminster

2. 13 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 4 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.

• 26/06922/LBC Awaiting decision

  10 Buckingham Gate London SW1E 6LA

  Replacement of window with door at upper ground floor, installation of external platform lift and associated entrance alterations; internal alterations including installation of new lift and WCs; installation of internal partitions and formation and alteration of openings, alterations to internal doors, windows and finishes, installation of secondary glazing, and installation of suspended ceilings; installation of air source heat pumps, photovoltaic panels and associated plant at roof level; installation of ventilation equipment; and associated works. (Linked with 26/06921/FULL)

  Submitted 9 Oct 2026 Heritage and listed buildings

1 later application on the register refers to this one:

• 26/06922/LBC Awaiting decision

  10 Buckingham Gate London SW1E 6LA

  Replacement of window with door at upper ground floor, installation of external platform lift and associated entrance alterations; internal alterations including installation of new lift and WCs; installation of internal partitions and formation and alteration of openings, alterations to internal doors, windows and finishes, installation of secondary glazing, and installation of suspended ceilings; installation of air source heat pumps, photovoltaic panels and associated plant at roof level; installation of ventilation equipment; and associated works. (Linked with 26/06921/FULL)

  Submitted 9 Oct 2026 Heritage and listed buildings

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.

• 10 Buckingham Gate London SW1E 6LA

  26/06922/LBC Submitted 9 Oct 2026 50 yards away

  90% historically approved · decision due ~4 Dec

  Replacement of window with door at upper ground floor, installation of external platform lift and associated entrance alterations; internal alterations including installation of new lift and WCs; installation of internal partitions and formation and alteration of openings, alterations to internal doors, windows and finishes, installation of secondary glazing, and installation of suspended ceilings; installation of air source heat pumps, photovoltaic panels and associated plant at roof level; installation of ventilation equipment; and associated works. (Linked with 26/06921/FULL)

  Awaiting decision Heritage and listed buildings Windows or glazing

• 3 Buckingham Mews London SW1E 6NR

  26/00159/CLOPUD Submitted 13 Jan 2026 50 yards away

  Installation of solar panels to existing loft roof.

  Withdrawn Lawful development 12 docs

• 6 Buckingham Mews London SW1E 6NR

  23/03588/NMA Submitted 28 May 2023 50 yards away

  Amendments to planning permission dated 12th December 2022 (RN:22/03987/FULL) for the conversion of ground floor garage to habitable accommodation and erection of mansard extension for use in connection with the existing first floor flat (Unit 8); and extension to the rear first floor to existing flat, Unit 2 [Site includes rear of 25-27 Catherine Place] namely; to extend the width of the flat roof to the edge of the building.

  Refused Amendments Extension Loft or dormer 15 docs

• 3 Buckingham Mews London SW1E 6NR

  26/02298/PASPV Submitted 7 Apr 2026 50 yards away

  89% historically approved · decision due ~2 Jun

  Installation of solar panels to existing loft roof.

  Awaiting decision 15 docs

• 4 Buckingham Mews London SW1E 6NR

  26/05833/FULL Submitted 25 Aug 2026 50 yards away

  88% historically approved · decision due ~30 Oct

  Erection of a mansard roof extension.

  Decided Full applications Extension Loft or dormer 16 docs

• 5 Buckingham Mews London SW1E 6NR

  26/02964/FULL Submitted 6 May 2026 50 yards away

  88% historically approved · decision due ~7 Jul

  Erection of mansard roof extension, external alterations, replacement windows, and conversion of garage to study room.

  Awaiting decision Full applications Extension Loft or dormer +1 17 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