Roxburghe House 273 - 287 Regent Street London W1B 2HA

This site has had 2 applications since 2026.

• 26/05748/FULL Awaiting decision

  Roxburghe House 273 - 287 Regent Street London W1B 2HA

  Refurbishment and extension of Roxburghe House and 39 and 40 Margaret Street, including new stair and lift core extension, UKPN substation and the introduction of a rooftop terrace, pavilion and plant enclosure to each building; replacement of windows, shopfronts and new office entrance from Margaret Street and associated ancillary works; and associated works with the use of the buildings as Class E(g) at part basement, part ground floor and upper floors and Class E(a)(b)(c) at part ground and part basement levels. (Linked with 26/05749/LBC)

  Submitted 21 Aug 2026 Full applications

1. 21 Aug 2026

   Received by Westminster

2. 1 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 16 October 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.

• 26/05748/FULL Awaiting decision

  Roxburghe House 273 - 287 Regent Street London W1B 2HA

  Refurbishment and extension of Roxburghe House and 39 and 40 Margaret Street, including new stair and lift core extension, UKPN substation and the introduction of a rooftop terrace, pavilion and plant enclosure to each building; replacement of windows, shopfronts and new office entrance from Margaret Street and associated ancillary works; and associated works with the use of the buildings as Class E(g) at part basement, part ground floor and upper floors and Class E(a)(b)(c) at part ground and part basement levels. (Linked with 26/05749/LBC)

  Submitted 21 Aug 2026 Full applications

1 later application on the register refers to this one:

• 26/05748/FULL Awaiting decision

  Roxburghe House 273 - 287 Regent Street London W1B 2HA

  Refurbishment and extension of Roxburghe House and 39 and 40 Margaret Street, including new stair and lift core extension, UKPN substation and the introduction of a rooftop terrace, pavilion and plant enclosure to each building; replacement of windows, shopfronts and new office entrance from Margaret Street and associated ancillary works; and associated works with the use of the buildings as Class E(g) at part basement, part ground floor and upper floors and Class E(a)(b)(c) at part ground and part basement levels. (Linked with 26/05749/LBC)

  Submitted 21 Aug 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.

• Roxburghe House 273 - 287 Regent Street London W1B 2HA

  26/05748/FULL Submitted 21 Aug 2026 50 yards away

  88% historically approved · decision due ~16 Oct

  Refurbishment and extension of Roxburghe House and 39 and 40 Margaret Street, including new stair and lift core extension, UKPN substation and the introduction of a rooftop terrace, pavilion and plant enclosure to each building; replacement of windows, shopfronts and new office entrance from Margaret Street and associated ancillary works; and associated works with the use of the buildings as Class E(g) at part basement, part ground floor and upper floors and Class E(a)(b)(c) at part ground and part basement levels. (Linked with 26/05749/LBC)

  Awaiting decision Full applications Extension Windows or glazing

• 21 - 22 Great Castle Street London W1G 0HY

  26/00014/AD7 Submitted 5 Jan 2026 50 yards away

  Display for a temporary period of six months of a non-illuminated 'to let' board located at a height of between 3.0m x 4.6m above pavement level and measuring 1.1m x 0.9m.

  Granted Advertising 10 docs

• Walmar House 296 Regent Street London W1B 3AP

  26/00057/LBC Submitted 6 Jan 2026 50 yards away

  90% historically approved · decision due ~3 Mar

  Installation of new rotating entrance door and accessible door; removal of existing sliding entrance doors and internal lobby doors; installation of air curtain, new flooring, new lighting fixtures and new security gate. [Linked to 26/00056/FULL]

  Awaiting decision Heritage and listed buildings 22 docs

• Walmar House 296 Regent Street London W1B 3AP

  26/00056/FULL Submitted 6 Jan 2026 50 yards away

  88% historically approved · decision due ~3 Mar

  Installation of new rotating entrance door and accessible door; removal of existing sliding entrance doors and internal lobby doors; installation of air curtain, new flooring, new lighting fixtures and new security gate. [Linked to 26/00057/LBC]

  Awaiting decision Full applications 22 docs

• 33 Margaret Street London W1G 0JD

  26/00479/LBC Submitted 27 Jan 2026 50 yards away

  90% historically approved · decision due ~24 Mar

  Cleaning of the elevations fronting onto Regent Street and Margaret Street using facade gommage.

  Awaiting decision Heritage and listed buildings 14 docs

• Marcol House 289 - 293 Regent Street London W1B 2HJ

  25/07205/FULL Submitted 6 Oct 2025 50 yards away

  Variation of condition 4 of planning permission dated 08 January 2024 (RN: 23/07854/FULL) for use of the public highway for the placing of 7 tables and 28 chairs in three areas measuring 6.9m x 1.3m (Margaret Street frontage), 6.9m x 1.2m and 1.9m x 1.2m (Regent Street frontage) in connection with existing restaurant/bar; NAMELY, to allow continued use until 31 December 2027 (Application under Section 73 of the Act)..

  Granted Full applications 12 docs

• 26/07202/LBC Awaiting decision

  Basement East And Ground Floor And First Floor 33 Weymouth Street London W1G 7BY

  Replacement of 13 doorsets with fire doors.

  Received 21 Oct, published by the council 23 Oct 2026 Heritage and listed buildings
• 26/07183/LBC Awaiting decision

  306 - 308 Regent Street London W1B 3AT

  Installation of a manually operated retractable fabric awning to the existing shopfront at 308 Regent Street, comprising an orange fabric canopy with discreet printed lettering to the front valance, together with associated supporting framework, mounting brackets and fixings to the existing fa?ade.

  Received 21 Oct, published by the council 22 Oct 2026 Heritage and listed buildings
• 26/07191/LBC Awaiting decision

  6 Wilton Place London SW1X 8RH

  Layout alterations and replacement of internal doors.

  Received 21 Oct, published by the council 22 Oct 2026 Heritage and listed buildings
• 26/07199/LBC Awaiting decision

  49 Queen's Gardens London W2 3AA

  Erection of a mansard roof extension incorporating rooflights and a rear balcony; installation of Juliet balconies at ground and first floor levels to the rear; demolition of the existing courtyard extension and erection of a single-storey infill extension; extension of the rear wing at first floor (mezzanine) and second floor levels; fenestration alterations including the installation of new windows; stucco repairs and partial rebuilding of the rear extensions; and associated internal alterations at all levels. (Linked to 26/07198/FULL)

  Received 21 Oct, published by the council 23 Oct 2026 Heritage and listed buildings
• 26/07192/LBC Awaiting decision

  119 Warwick Way London SW1V 4HS

  Conversion and internal alterations to the ground floor flat (Retrospective)

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