Abercorn School 38 Portland Place London W1B 1LS

This site has had 4 applications since 2026.

• 26/07321/ADFULL Awaiting decision

  Abercorn School 38 Portland Place London W1B 1LS

  Details of cycle storage pursuant to condition 13 of planning permission dated 9th July 2026 (RN: 26/00351/FULL).

  Submitted 26 Oct 2026
• 26/06997/ADFULL Awaiting decision

  Abercorn School 38 Portland Place London W1B 1LS

  Details of how waste is to be stored on site and how materials for recycling will be stored separately pursuant to condition 14 of planning permission dated 9th July 2026 (RN: 26/00351/FULL)

  Submitted 13 Oct 2026
• 26/00351/FULL Awaiting decision

  Abercorn School 38 Portland Place London W1B 1LS

  Internal alterations to 38 Portland Place throughout to change the use from sui generis (Institutional Use) to Class E office use throughout in connection with removal of link building between 38 Portland Place and 9 Cavendish Mews North at ground, first and second floors, formation of a new rear stair core to main building and new external fire escape stair. New terraces to office space in connection with plant space and the installation of air source heat pumps. Alterations to the front and rear facades of the mews building in connection with internal alterations to create new residential units and new plant space to mews roof level and new terrace spaces all in connection with the change of use of ground to first floors from sui generis (institutional use) and second floor Class E (office use) of 9 Cavendish Mews North to Class C3 residential use to form 3x 1 bedroom flats. (Part of a land swap with 1 Marylebone High Street and Moxon House). (Linked to 26/00352/LBC)

  Submitted 21 Jan 2026 Full applications

1. 21 Jan 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 18 March 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 91 days over the applications it decided in the last year.

• 26/00351/FULL Awaiting decision

  Abercorn School 38 Portland Place London W1B 1LS

  Internal alterations to 38 Portland Place throughout to change the use from sui generis (Institutional Use) to Class E office use throughout in connection with removal of link building between 38 Portland Place and 9 Cavendish Mews North at ground, first and second floors, formation of a new rear stair core to main building and new external fire escape stair. New terraces to office space in connection with plant space and the installation of air source heat pumps. Alterations to the front and rear facades of the mews building in connection with internal alterations to create new residential units and new plant space to mews roof level and new terrace spaces all in connection with the change of use of ground to first floors from sui generis (institutional use) and second floor Class E (office use) of 9 Cavendish Mews North to Class C3 residential use to form 3x 1 bedroom flats. (Part of a land swap with 1 Marylebone High Street and Moxon House). (Linked to 26/00352/LBC)

  Submitted 21 Jan 2026 Full applications

1 later application on the register refers to this one:

• 26/00351/FULL Awaiting decision

  Abercorn School 38 Portland Place London W1B 1LS

  Internal alterations to 38 Portland Place throughout to change the use from sui generis (Institutional Use) to Class E office use throughout in connection with removal of link building between 38 Portland Place and 9 Cavendish Mews North at ground, first and second floors, formation of a new rear stair core to main building and new external fire escape stair. New terraces to office space in connection with plant space and the installation of air source heat pumps. Alterations to the front and rear facades of the mews building in connection with internal alterations to create new residential units and new plant space to mews roof level and new terrace spaces all in connection with the change of use of ground to first floors from sui generis (institutional use) and second floor Class E (office use) of 9 Cavendish Mews North to Class C3 residential use to form 3x 1 bedroom flats. (Part of a land swap with 1 Marylebone High Street and Moxon House). (Linked to 26/00352/LBC)

  Submitted 21 Jan 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 119 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.

• Abercorn School 38 Portland Place London W1B 1LS

  26/00351/FULL Submitted 21 Jan 2026 50 yards away

  88% historically approved · decision due ~18 Mar

  Internal alterations to 38 Portland Place throughout to change the use from sui generis (Institutional Use) to Class E office use throughout in connection with removal of link building between 38 Portland Place and 9 Cavendish Mews North at ground, first and second floors, formation of a new rear stair core to main building and new external fire escape stair. New terraces to office space in connection with plant space and the installation of air source heat pumps. Alterations to the front and rear facades of the mews building in connection with internal alterations to create new residential units and new plant space to mews roof level and new terrace spaces all in connection with the change of use of ground to first floors from sui generis (institutional use) and second floor Class E (office use) of 9 Cavendish Mews North to Class C3 residential use to form 3x 1 bedroom flats. (Part of a land swap with 1 Marylebone High Street and Moxon House). (Linked to 26/00352/LBC)

  Awaiting decision Full applications New dwelling 85 docs

• L'ecole Internationale Franco-Anglaise 36 Portland Place London W1B 1LS

  25/09231/FULL Submitted 19 Dec 2025 50 yards away

  Removal of reciprocal means of escape shared between 34 Portland Place and 36 Portland Place and implementation of fire upgrades throughout 36 Portland Place to ensure compliance with current building regulations affecting educational institutions within listed buildings. Works incorporate removal of redundant fire escape doors, upgrades to existing door furniture, installation of partitions to create fire separation lobbies, installation of mechanical extract among other minor alterations (Linked to 25/09232/LBC)

  Withdrawn Full applications 28 docs

• Abercorn School 38 Portland Place London W1B 1LS

  26/07321/ADFULL Submitted 26 Oct 2026 50 yards away

  89% historically approved · decision due ~24 Dec

  Details of cycle storage pursuant to condition 13 of planning permission dated 9th July 2026 (RN: 26/00351/FULL).

  Awaiting decision

• Abercorn School 38 Portland Place London W1B 1LS

  26/06997/ADFULL Submitted 13 Oct 2026 50 yards away

  89% historically approved · decision due ~8 Dec

  Details of how waste is to be stored on site and how materials for recycling will be stored separately pursuant to condition 14 of planning permission dated 9th July 2026 (RN: 26/00351/FULL)

  Awaiting decision

• 36 Portland Place London W1B 1LS

  13/03998/ADFULL Submitted 2 May 2013 50 yards away

  Submission of details of refuse & recycling storage and a Travel Plan, pursuant to Conditions 9 and 10 of planning permission dated 08 March 2013 (RN: 12/07230)namely details .

  Granted Full applications 5 docs

• L'ecole Internationale Franco-Anglaise 36 Portland Place London W1B 1LS

  25/09232/LBC Submitted 19 Dec 2025 50 yards away

  Removal of reciprocal means of escape shared between 34 Portland Place and 36 Portland Place and implementation of fire upgrades throughout 36 Portland Place to ensure compliance with current building regulations affecting educational institutions within listed buildings. Works incorporate removal of redundant fire escape doors, upgrades to existing door furniture, installation of partitions to create fire separation lobbies, installation of mechanical extract among other minor alterations (Linked to 25/09231/FULL)

  Withdrawn Heritage and listed buildings 29 docs

• 26/07529/LBC Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water supply pipe on rear courtyard elevation. (Linked with 26/07528/FULL)

  Received 5 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
• 26/07509/LBC Awaiting decision

  Buckingham Palace The Mall London SW1A 1AA

  Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07508/FULL)

  Received 4 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
• 26/07473/LBC Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07472/FULL)

  Received 3 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
• 26/07471/LBC Awaiting decision

  12 Queen Anne's Gate London SW1H 9AA

  Excavation of single-storey basement, internal reconfiguration and installation of modern services. (Linked with 26/07470/FULL)

  Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
• 26/07461/LBC Awaiting decision

  1 Savile Row London W1S 3JR

  Minor internal works comprising redecoration and upgrades to lighting, flooring and bathroom and kitchen facilities, together with external works including new lighting and signage.

  Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings