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Planning application

38 Grosvenor Square London W1K 2HW

Awaiting decision Westminster 26/04400/LBC Heritage and listed buildings

Works: Extension Demolition

Relates to 26/04399/FULL

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Refurbishment and redevelopment of the site to provide a hotel (Use Class C1) with associated ancillary facilities, including the demolition of the existing rear wing and the erection of a new rear wing extension with roof pavilion and terrace, construction of a basement, and associated servicing, cycle parking, and landscaping works. (Linked with 26/04399/FULL)

As published by the council, reference 26/04400/LBC

Application record

Reference
26/04400/LBC
Category
Heritage and listed buildings
Status
Pending
Received
2 Jul 2026
Validated
2 Jul 2026
Postcode
W1K 2HW

Site history

Applications at this address on the Westminster register

This site has had 3 applications since 2026.

  • 26/04399/FULL Awaiting decision

    38 Grosvenor Square London W1K 2HW

    Refurbishment and redevelopment of the site to provide a hotel (Use Class C1) with associated ancillary facilities, including the demolition of the existing rear wing and the erection of a new rear wing extension with roof pavilion and terrace, construction of a basement, and associated servicing, cycle parking, and landscaping works. (Linked with 26/04400/LBC)

    Submitted 2 Jul 2026 Full applications
  • 26/02576/FULL Awaiting decision

    38 Grosvenor Square London W1K 2HW

    Temporary pop-up exhibition (Use Class F1) for a period of 18 months.

    Submitted 20 Apr 2026 Full applications

Timeline

Dates from the published record

  1. 2 Jul 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 27 August 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.

Cases linked to this one on the register

  • 26/04399/FULL Awaiting decision

    38 Grosvenor Square London W1K 2HW

    Refurbishment and redevelopment of the site to provide a hotel (Use Class C1) with associated ancillary facilities, including the demolition of the existing rear wing and the erection of a new rear wing extension with roof pavilion and terrace, construction of a basement, and associated servicing, cycle parking, and landscaping works. (Linked with 26/04400/LBC)

    Submitted 2 Jul 2026 Full applications

1 later application on the register refers to this one:

  • 26/04399/FULL Awaiting decision

    38 Grosvenor Square London W1K 2HW

    Refurbishment and redevelopment of the site to provide a hotel (Use Class C1) with associated ancillary facilities, including the demolition of the existing rear wing and the erection of a new rear wing extension with roof pavilion and terrace, construction of a basement, and associated servicing, cycle parking, and landscaping works. (Linked with 26/04400/LBC)

    Submitted 2 Jul 2026 Full applications

What happens while it is decided

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.

About heritage and listed building applications

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.

Nearby applications

Within 0.3 miles

  • 38 Grosvenor Square London W1K 2HW

    26/04399/FULL Submitted 2 Jul 2026 50 yards away

    88% historically approved · decision due ~27 Aug

    Refurbishment and redevelopment of the site to provide a hotel (Use Class C1) with associated ancillary facilities, including the demolition of the existing rear wing and the erection of a new rear wing extension with roof pavilion and terrace, construction of a basement, and associated servicing, cycle parking, and landscaping works. (Linked with 26/04400/LBC)

    Awaiting decision Full applications Extension Demolition

  • 38 Grosvenor Square London W1K 2HW

    26/02576/FULL Submitted 20 Apr 2026 50 yards away

    88% historically approved · decision due ~15 Jun

    Temporary pop-up exhibition (Use Class F1) for a period of 18 months.

    Awaiting decision Full applications 27 docs

  • 35 - 37 Grosvenor Square London W1K 2HN

    25/08787/ADFULL Submitted 3 Dec 2025 50 yards away

    Details of Supplementary Acoustic Report pursuant to condition 7 of planning permission dated 30 September 2024 (RN: 24/05532/FULL)

    Granted Full applications 6 docs

  • Communications Station 39 - 44 Grosvenor Square London W1K 2HP

    25/06638/TELCOM Submitted 17 Sep 2025 50 yards away

    Removal of the existing 3no. antennas and installation of replacement 3no. antennas two of which located on new freestanding frames and ancillary development thereto including 1.1m freestanding handrail.

    Granted Telecoms 14 docs

  • 34 Grosvenor Square London W1K 2HD

    25/08464/FULL Submitted 19 Nov 2025 50 yards away

    Replacement of existing ground floor windows, relocation of the entrance and installation of retractable canopies

    Granted Full applications Windows or glazing 23 docs

  • 34 Grosvenor Square London W1K 2HD

    26/03449/ADFULL Submitted 26 May 2026 50 yards away

    88% historically approved · decision due ~21 Jul

    Details of new french doors pursuant to condition 4 of planning permission dated 17 March 2026 (RN: 25/08464/FULL)

    Awaiting decision Full applications Windows or glazing 4 docs

In Westminster

  • 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