5 Derby Street London W1J 7AB

This site has had 2 applications since 2025.

• 25/07469/LBC Awaiting decision

  5 Derby Street London W1J 7AB

  Demolition of rear closet wing extension and erection of replacement extension from ground to third floor level, demolition of part of the existing roof structure and erection of a mansard roof extension at fourth floor level; excavation of pavement vaults to increase floor to ceiling heights; external alterations including the installation of replacement windows, railing and step coverings; removal of render and creation of an entrance porch; internal alterations throughout all in connection with the use of the building as four flats (Class C3). (Linked to 25/07468/FULL)

  Submitted 15 Oct 2025 Heritage and listed buildings

1. 15 Oct 2025

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 10 December 2025, 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 65 days over the applications it decided in the last year.

• 25/07469/LBC Awaiting decision

  5 Derby Street London W1J 7AB

  Demolition of rear closet wing extension and erection of replacement extension from ground to third floor level, demolition of part of the existing roof structure and erection of a mansard roof extension at fourth floor level; excavation of pavement vaults to increase floor to ceiling heights; external alterations including the installation of replacement windows, railing and step coverings; removal of render and creation of an entrance porch; internal alterations throughout all in connection with the use of the building as four flats (Class C3). (Linked to 25/07468/FULL)

  Submitted 15 Oct 2025 Heritage and listed buildings

1 later application on the register refers to this one:

• 25/07469/LBC Awaiting decision

  5 Derby Street London W1J 7AB

  Demolition of rear closet wing extension and erection of replacement extension from ground to third floor level, demolition of part of the existing roof structure and erection of a mansard roof extension at fourth floor level; excavation of pavement vaults to increase floor to ceiling heights; external alterations including the installation of replacement windows, railing and step coverings; removal of render and creation of an entrance porch; internal alterations throughout all in connection with the use of the building as four flats (Class C3). (Linked to 25/07468/FULL)

  Submitted 15 Oct 2025 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 89 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.

• 5 Derby Street London W1J 7AB

  25/07469/LBC Submitted 15 Oct 2025 0m away

  90% historically approved · decision due ~10 Dec

  Demolition of rear closet wing extension and erection of replacement extension from ground to third floor level, demolition of part of the existing roof structure and erection of a mansard roof extension at fourth floor level; excavation of pavement vaults to increase floor to ceiling heights; external alterations including the installation of replacement windows, railing and step coverings; removal of render and creation of an entrance porch; internal alterations throughout all in connection with the use of the building as four flats (Class C3). (Linked to 25/07468/FULL)

  Awaiting decision Heritage and listed buildings New dwelling Extension +3 58 docs
  Several homes

• 20 Stanhope Row London W1J 7BT

  26/02235/ADFULL Submitted 2 Apr 2026 32m away

  87% historically approved · decision due ~28 May

  Detailed samples of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located, the proposed windows/doors and proposed railings pursuant to conditions 4 and 5 of planning permission dated 20th February 2025 (RN:24/07198).

  Awaiting decision Full applications Windows or glazing 11 docs

• Curzon House 21 - 23 Curzon Street London W1J 7TE

  26/00938/ADLBC Submitted 13 Feb 2026 35m away

  91% historically approved · decision due ~10 Apr

  Details of approval of two additional samples of the brick cleaning pursuant to condition 3 of listed building dated 15th July 2025 (RN:25/03459/LBC)

  Awaiting decision Conditions 17 docs

• Development Site At 2-6 Stanhope Row, 16 Stanhope Row, 36-37 Hertford St And 16A, 16B And 17 Market Mews London

  25/04355/ADFULL Submitted 25 Jun 2025 46m away

  Details of a biodiversity management plan pursuant to Condition 42 of planning permission dated 31 October 2025 (RN: 24/05472/FULL)

  Granted Full applications 10 docs

• Development Site At 2-6 Stanhope Row, 16 Stanhope Row, 36-37 Hertford St And 16A, 16B And 17 Market Mews London

  25/08286/NMA Submitted 12 Nov 2025 46m away

  93% historically approved · decision due ~7 Jan

  Amendments to planning permission dated 31st October 2025 (RN 24/05472/FULL ) for the Variation of condition 1 and removal of condition 35 of planning permission dated 24th May 2023 (RN 22/05759/FULL) for the demolition and replacement of existing fifth floor, demolition of existing plant room, and erection of a single storey roof extension at sixth floor to 2-6 Stanhope Row with replacement windows, terraces at fifth and sixth floors and remodelling works; demolition of 16 Stanhope Row, 16a, 16b and 17 Market Mews, excavation at basement level and erection of a four-storey (plus part basement floor) replacement building, all to provide an 82-bedroom hotel (Class C1). Demolition of 37 Hertford Street and erection of replacement building (basement to fourth floor mansard roof plus rooftop plant enclosure); and Internal and external alterations to 36 Hertford Street including demolition and remodelling of existing mansard roof; together with excavation at basement level to 36 and 37 Hertford Street to lower existing basement slab level; all to provide 16 residential dwellings (Class C3) along with provision for cycle parking, terraces, refuse storage and rooftop plant, together with other associated works. NAMELY, NAMELY, to increase the height of the plant enclosure, revised entrance area and a change to the wording of condition 4 relating to the timing of the Whole life carbon assessment.

  Awaiting decision Amendments Extension Loft or dormer +2 14 docs
  Small domestic

• 19 Curzon Street London W1J 7TB

  03/08734/FULL Submitted 13 Nov 2003 54m away

  Installation of three satellite dishes at roof level.

  Granted Full applications 8 docs

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront.

  15 Sep 2026 Full applications
• 26/06297/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

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

  15 Sep 2026 Full applications
• 26/06234/FULL Awaiting decision

  40 Grosvenor Place London SW1X 7HJ

  Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

  11 Sep 2026 Full applications
• 26/06249/FULL Awaiting decision

  53 Wimpole Street London W1G 8YH

  Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06250/LBC)

  11 Sep 2026 Full applications
• 26/03576/FULL Decided

  15A Devonshire Terrace London W2 3DW

  Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)

  1 Jun 2026 Full applications