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Planning application

6 Wilton Street London SW1X 7AF

Awaiting decision Westminster 26/01240/LBC Listed Building Consent Application

Works: Extension Loft or dormer Demolition Windows or glazing

Relates to 26/01239/FULL

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

Proposal

Partial demolition at rear basement, ground and closet wing; extension at rear basement & ground floor with terrace and lantern rooflight over; rebuilding of closet wing with additional storey; replacement windows at rear; internal alterations. (Linked to 26/01239/FULL)

As published by the council, reference 26/01240/LBC

Application record

Reference
26/01240/LBC
Type
Listed Building Consent Application
Status
Pending
Received
26 Feb 2026
Validated
26 Feb 2026
Ward
Knightsbridge & Belgravia
Postcode
SW1X 7AF

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2026.

  • 26/01274/LBC Awaiting decision

    6 Wilton Street London SW1X 7AF

    Removal of existing roof and rear third floor mansard and replacement with fourth floor mansard extension; replacement of front third floor windows and new rear third floor windows; internal alterations. [Linked to 26/01273/FULL]

    Submitted 27 Feb 2026 Heritage and listed buildings
  • 26/01273/FULL Awaiting decision

    6 Wilton Street London SW1X 7AF

    Removal of existing roof and rear third floor mansard and replacement with fourth floor mansard extension; replacement of front third floor windows and new rear third floor windows. [Linked to 26/01274/LBC]

    Submitted 27 Feb 2026 Full applications
  • 26/01239/FULL Awaiting decision

    6 Wilton Street London SW1X 7AF

    Partial demolition at rear basement, ground and closet wing; extension at rear basement & ground floor with terrace and lantern rooflight over; rebuilding of closet wing with additional storey; replacement windows at rear. (Linked to 26/01240/LBC)

    Submitted 26 Feb 2026 Full applications

Timeline

Dates from the published record

  1. 26 Feb 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 23 April 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

  • 26/01239/FULL Awaiting decision

    6 Wilton Street London SW1X 7AF

    Partial demolition at rear basement, ground and closet wing; extension at rear basement & ground floor with terrace and lantern rooflight over; rebuilding of closet wing with additional storey; replacement windows at rear. (Linked to 26/01240/LBC)

    Submitted 26 Feb 2026 Full applications

1 later application on the register refers to this one:

  • 26/01239/FULL Awaiting decision

    6 Wilton Street London SW1X 7AF

    Partial demolition at rear basement, ground and closet wing; extension at rear basement & ground floor with terrace and lantern rooflight over; rebuilding of closet wing with additional storey; replacement windows at rear. (Linked to 26/01240/LBC)

    Submitted 26 Feb 2026 Full applications

Documents

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

27 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 heritage and listed building applications in a median of 93 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 500 metres

  • 6 Wilton Street London SW1X 7AF

    26/01239/FULL Submitted 26 Feb 2026 1m away

    87% historically approved · decision due ~23 Apr

    Partial demolition at rear basement, ground and closet wing; extension at rear basement & ground floor with terrace and lantern rooflight over; rebuilding of closet wing with additional storey; replacement windows at rear. (Linked to 26/01240/LBC)

    Awaiting decision Full applications Extension Loft or dormer +2 29 docs

  • 6 Wilton Street London SW1X 7AF

    26/01274/LBC Submitted 27 Feb 2026 3m away

    90% historically approved · decision due ~24 Apr

    Removal of existing roof and rear third floor mansard and replacement with fourth floor mansard extension; replacement of front third floor windows and new rear third floor windows; internal alterations. [Linked to 26/01273/FULL]

    Awaiting decision Heritage and listed buildings Extension Loft or dormer +1 38 docs

  • 6 Wilton Street London SW1X 7AF

    26/01273/FULL Submitted 27 Feb 2026 3m away

    87% historically approved · decision due ~24 Apr

    Removal of existing roof and rear third floor mansard and replacement with fourth floor mansard extension; replacement of front third floor windows and new rear third floor windows. [Linked to 26/01274/LBC]

    Awaiting decision Full applications Extension Loft or dormer +1 38 docs

  • 13 Wilton Street London SW1X 7AF

    22/04803/ADLBC Submitted 15 Jul 2022 14m away

    Detailed assessment of the causes and effects of the damage at the balcony and a detailed written specification of structural repairs proposed at the balcony pursuant to condition 3(c) of listed building permission dated 26 March 2018 (18/01355/LBC).

    Granted Conditions 6 docs

  • 3 Wilton Street London SW1X 7AF

    25/06551/LBC Submitted 12 Sep 2025 14m away

    Installation of security bars to front windows of basement and ground floors.

    Refused Heritage and listed buildings Windows or glazing 21 docs

  • 3 Wilton Street London SW1X 7AF

    25/06550/FULL Submitted 12 Sep 2025 16m away

    Installation of security bars to front windows of basement and ground floors.

    Refused Full applications Windows or glazing 28 docs

In Westminster

  • 26/06250/LBC 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 26/06249/FULL)

    11 Sep 2026 Heritage and listed buildings
  • 26/06203/LBC Awaiting decision

    106 Blandford Street London W1U 8AG

    Installation of two roof-mounted anchor posts. (Linked to 26/06202/FULL)

    10 Sep 2026 Heritage and listed buildings
  • 26/06187/LBC Awaiting decision

    4 Shepherd Market London W1J 7QB

    Installation of wall mounted highway street light on to the facade of 4 Shepherd Market.

    10 Sep 2026 Heritage and listed buildings
  • 26/06216/LBC Awaiting decision

    208 Regent Street London W1B 5BD

    Strip-out of existing, modern retail unit fixtures, fittings, stair and services, with retention of heritage and listed features, including shopfront and entrances, and ground floor ceiling details and features. Fit-out of new retail fittings, fixtures and services. Retention of shopfront with new 'like-for-like' signage and a new flag pole.

    10 Sep 2026 Heritage and listed buildings
  • 26/06176/LBC Awaiting decision

    46 Gloucester Place London W1U 8HG

    Installation of 1,100 mm high protective railings along the existing roof-level access walkway. (Linked to 26/06178/FULL)

    9 Sep 2026 Heritage and listed buildings