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Planning application

Basement And Ground Floor 9 Mount Street London W1K 3NG

Awaiting decision Westminster 26/00240/LBC Listed Building Consent Application

Works: Windows or glazing

Relates to 26/00239/FULL

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

Proposal

Installation of external plant, replacement awning, new shop front signage and reconfiguration of the lower ground and ground floor including new flooring, joinery and associated works in connection with the refurbishment of the retail unit. (Linked to 26/00239/FULL)

As published by the council, reference 26/00240/LBC

Application record

Reference
26/00240/LBC
Type
Listed Building Consent Application
Status
Pending
Received
16 Jan 2026
Validated
16 Jan 2026
Ward
West End
Postcode
W1K 3NG

Site history

Applications at this address on the Westminster register

This site has had 8 applications since 2026.

  • 26/05093/ADLBC Decided

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Detailed drawings at 1:10, 1:5 of alterations to rear lower ground floor windows to accommodate vents; pursuant to condition 4 (part D) of listed building consent dated 28th May 2026 (26/00240/LBC)

    Submitted 29 Jul 2026
  • 26/05093/ADFULL Awaiting decision

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Detailed drawings at 1:10, 1:5 of alterations to rear lower ground floor windows to accommodate vents; pursuant to condition 4 (part D) of listed building consent dated 28th May 2026 (26/00240/LBC)

    Submitted 29 Jul 2026 Full applications
  • 26/04801/ADLBC Awaiting decision

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Details at 1:1 of new grills, sample photographs along with materiality, Details at 1:10 of new stair balustrades, Details of lighting demonstrating where on drawings ; Details of new modern flooring and joinery showing their relationship in conjunction with any existing historic fabric, demonstrating that their installation would not cause harm, pursuant to the partial discharge of condition 4 (Parts A,B,C and E only) of listed building consent dated 28th May 2026(RN: 26/00240/LBC)

    Submitted 17 Jul 2026
  • 26/04120/ADFULL Decided

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Details/specifications of the new condensors pursuant to Condition 6 of planning permission dated 28 May 2026 (26/00239/FULL).

    Submitted 23 Jun 2026
  • 26/04068/ADLBC Decided

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Details/specifications of the new condensors pursuant to Condition 5 of listed building dated 28 May 2026 (26/00240/LBC)

    Submitted 19 Jun 2026
  • 26/00238/ADV Decided

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Display of non illuminated fascia sign (90mm x 700mm) and an awning sign.

    Decided 26 Feb 2026 Advertising
  • 26/00239/FULL Awaiting decision

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Installation of external plant and reconfiguration of the lower ground and ground floor including new flooring, joinery and associated works in connection with the refurbishment of the retail unit. (Linked to 26/00240/LBC)

    Submitted 16 Jan 2026 Full applications

Timeline

Dates from the published record

  1. 16 Jan 2026

    Received by Westminster

  2. 20 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 13 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 90 days over the applications it decided in the last year.

Cases linked to this one on the register

  • 26/00239/FULL Awaiting decision

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Installation of external plant and reconfiguration of the lower ground and ground floor including new flooring, joinery and associated works in connection with the refurbishment of the retail unit. (Linked to 26/00240/LBC)

    Submitted 16 Jan 2026 Full applications

5 later applications on the register refer to this one:

  • 26/05093/ADLBC Decided

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Detailed drawings at 1:10, 1:5 of alterations to rear lower ground floor windows to accommodate vents; pursuant to condition 4 (part D) of listed building consent dated 28th May 2026 (26/00240/LBC)

    Submitted 29 Jul 2026
  • 26/05093/ADFULL Awaiting decision

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Detailed drawings at 1:10, 1:5 of alterations to rear lower ground floor windows to accommodate vents; pursuant to condition 4 (part D) of listed building consent dated 28th May 2026 (26/00240/LBC)

    Submitted 29 Jul 2026 Full applications
  • 26/04801/ADLBC Awaiting decision

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Details at 1:1 of new grills, sample photographs along with materiality, Details at 1:10 of new stair balustrades, Details of lighting demonstrating where on drawings ; Details of new modern flooring and joinery showing their relationship in conjunction with any existing historic fabric, demonstrating that their installation would not cause harm, pursuant to the partial discharge of condition 4 (Parts A,B,C and E only) of listed building consent dated 28th May 2026(RN: 26/00240/LBC)

    Submitted 17 Jul 2026
  • 26/04068/ADLBC Decided

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Details/specifications of the new condensors pursuant to Condition 5 of listed building dated 28 May 2026 (26/00240/LBC)

    Submitted 19 Jun 2026
  • 26/00239/FULL Awaiting decision

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    Installation of external plant and reconfiguration of the lower ground and ground floor including new flooring, joinery and associated works in connection with the refurbishment of the retail unit. (Linked to 26/00240/LBC)

    Submitted 16 Jan 2026 Full applications

Who's behind it

Company information only, from the register and Companies House

Knight Frank LLP Agent, registered in London

Active · incorporated 2003 · London

161 applications on PlanIndex · across 45 councils · 94% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

Plans, drawings, consultee responses and the officer's report

30 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

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

  • Basement And Ground Floor 9 Mount Street London W1K 3NG

    26/00239/FULL Submitted 16 Jan 2026 50 yards away

    88% historically approved · decision due ~13 Mar

    Installation of external plant and reconfiguration of the lower ground and ground floor including new flooring, joinery and associated works in connection with the refurbishment of the retail unit. (Linked to 26/00240/LBC)

    Awaiting decision Full applications 32 docs

  • Basement And Ground Floor 9 Mount Street London W1K 3NG

    26/05093/ADFULL Submitted 29 Jul 2026 50 yards away

    88% historically approved · decision due ~23 Sep

    Detailed drawings at 1:10, 1:5 of alterations to rear lower ground floor windows to accommodate vents; pursuant to condition 4 (part D) of listed building consent dated 28th May 2026 (26/00240/LBC)

    Awaiting decision Full applications Windows or glazing 4 docs

  • Basement And Ground Floor 9 Mount Street London W1K 3NG

    26/00238/ADV Submitted 16 Jan 2026 50 yards away

    Display of non illuminated fascia sign (90mm x 700mm) and an awning sign.

    Decided Advertising 4 docs

  • Basement And Ground Floor 9 Mount Street London W1K 3NG

    26/04068/ADLBC Submitted 19 Jun 2026 50 yards away

    89% historically approved · decision due ~14 Aug

    Details/specifications of the new condensors pursuant to Condition 5 of listed building dated 28 May 2026 (26/00240/LBC)

    Decided

  • Basement And Ground Floor 9 Mount Street London W1K 3NG

    26/04801/ADLBC Submitted 17 Jul 2026 50 yards away

    89% historically approved · decision due ~11 Sep

    Details at 1:1 of new grills, sample photographs along with materiality, Details at 1:10 of new stair balustrades, Details of lighting demonstrating where on drawings ; Details of new modern flooring and joinery showing their relationship in conjunction with any existing historic fabric, demonstrating that their installation would not cause harm, pursuant to the partial discharge of condition 4 (Parts A,B,C and E only) of listed building consent dated 28th May 2026(RN: 26/00240/LBC)

    Awaiting decision

  • Basement And Ground Floor 9 Mount Street London W1K 3NG

    26/05093/ADLBC Submitted 29 Jul 2026 50 yards away

    89% historically approved · decision due ~23 Sep

    Detailed drawings at 1:10, 1:5 of alterations to rear lower ground floor windows to accommodate vents; pursuant to condition 4 (part D) of listed building consent dated 28th May 2026 (26/00240/LBC)

    Decided Windows or glazing

In Westminster

  • 26/05473/LBC Decided

    9A Grosvenor Square London W1K 5AE

    Installation of natural Portland Stone paving to two front entrances. (Linked to 26/06273/FULL)

    Received 12 Aug, published by the council 22 Sep 2026 Heritage and listed buildings
  • 26/07421/LBC Awaiting decision

    1 Upper St Martin's Lane London WC2H 9NY

    Installation of non-illuminated vinyl lettering to the external face of the existing ground-floor shopfront windows for a temporary period. (Linked with 26/07083/ADV)

    Received 30 Oct, published by the council 3 Nov 2026 Heritage and listed buildings
  • 26/07416/LBC Awaiting decision

    39 Montagu Square London W1H 2LL

    Amalgamation of Flats 3 and 4 to form one single dwelling including associated internal reconfiguration and refurbishments, alterations to access arrangements and improvements to the existing terrace and private amenity spaces. Together with the removal and alteration of modern partitions, roof replacement, rebuilding of the roof terrace, new plant and addition of a new staircase, structural works, new window openings, and other associated works. (Linked with 26/07415/FULL)

    Received 30 Oct, published by the council 3 Nov 2026 Heritage and listed buildings
  • 26/07404/LBC Awaiting decision

    Basement Floor And Ground Floor Queen Annes House 34 Queen Anne's Gate London SW1H 9AB

    Refurbishment and enhancement of the building to facilitate its continued use as offices with ancillary residential accommodation, together with associated conservation, restoration, accessibility improvements, building services upgrades, landscaping and ancillary works. Internal and external alterations associated with the repair. (Linked with 26/07403/FULL)

    Received 30 Oct, published by the council 3 Nov 2026 Heritage and listed buildings
  • 26/07390/LBC Awaiting decision

    40 Wigmore Street London W1U 2RX

    Installation of a non-illuminated fascia sign measuring 0.29m x 0.79m and two vinyl signs applied to inside face of the glazed shopfront each measuring 0.22m x 0.84m. (Linked with 26/06970/ADV)

    29 Oct 2026 Heritage and listed buildings