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Planning application

Basement And Ground Floor 9 Mount Street London W1K 3NG

Awaiting decision Westminster 26/00239/FULL Full Planning Permission Application

Relates to 26/00240/LBC

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 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)

As published by the council, reference 26/00239/FULL

Application record

Reference
26/00239/FULL
Type
Full Planning Permission 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
  • 26/00240/LBC Awaiting decision

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    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)

    Submitted 16 Jan 2026 Heritage and listed buildings

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 65 days over the applications it decided in the last year.

Cases linked to this one on the register

  • 26/00240/LBC Awaiting decision

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    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)

    Submitted 16 Jan 2026 Heritage and listed buildings

2 later applications on the register refer to this one:

  • 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
  • 26/00240/LBC Awaiting decision

    Basement And Ground Floor 9 Mount Street London W1K 3NG

    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)

    Submitted 16 Jan 2026 Heritage and listed buildings

Who's behind it

Company information only, from the register and Companies House

Knight Frank LLP Agent, registered in London

Active · incorporated 2003 · London

135 applications on PlanIndex · across 38 councils · 93% 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

32 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.

Trade members open them 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 full applications in a median of 89 days. More in our guide to how long planning decisions take.

About full applications

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.

Nearby applications

Within 500 metres

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

    26/00240/LBC Submitted 16 Jan 2026 0m away

    90% historically approved · decision due ~13 Mar

    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)

    Awaiting decision Heritage and listed buildings Windows or glazing 30 docs

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

    26/05093/ADFULL Submitted 29 Jul 2026 3m away

    87% 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 8m 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 8m 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 8m 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 8m 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

  • 26/06295/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