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Planning application

6 Wilton Street London SW1X 7AF

Awaiting decision Westminster 26/01239/FULL Full Planning Permission Application

Works: Extension Loft or dormer Demolition Windows or glazing

Relates to 26/01240/LBC

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. (Linked to 26/01240/LBC)

As published by the council, reference 26/01239/FULL

Application record

Reference
26/01239/FULL
Type
Full Planning Permission 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 8 applications since 2026.

  • 26/07180/ADLBC Decided

    6 Wilton Street London SW1X 7AF

    Sample of the brickwork pursuant to condition 6 of listed building consent dated 5th August 2026 (26/01274/LBC)

    Submitted 21 Oct 2026
  • 26/07179/ADFULL Decided

    6 Wilton Street London SW1X 7AF

    Sample of the brickwork pursuant to condition 6 of planning permission dated 5th August 2026 (26/01273/FULL)

    Submitted 21 Oct 2026
  • 26/06546/ADFULL Decided

    6 Wilton Street London SW1X 7AF

    Details of all new windows and sample of new brickwork to the rear facade pursuant to Conditions 4 and 6 of planning permission dated 5th August 2026 (RN: 26/01273/FULL).

    Submitted 23 Sep 2026
  • 26/06547/ADLBC Decided

    6 Wilton Street London SW1X 7AF

    Details of all new windows; new internal doors; upgrading works to retained doors; new floor coverings and how they relate to retained historic fabric; any works to plaster ceilings and sample of new brickwork to the rear facade pursuant to Conditions 4 and 6 of listed building consent dated 5th August 2026 (RN: 26/01274/LBC).

    Submitted 23 Sep 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
  • 26/01240/LBC 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; internal alterations. (Linked to 26/01239/FULL)

    Submitted 26 Feb 2026 Heritage and listed buildings

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

Cases linked to this one on the register

  • 26/01240/LBC 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; internal alterations. (Linked to 26/01239/FULL)

    Submitted 26 Feb 2026 Heritage and listed buildings

1 later application on the register refers to this one:

  • 26/01240/LBC 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; internal alterations. (Linked to 26/01239/FULL)

    Submitted 26 Feb 2026 Heritage and listed buildings

Documents

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

29 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 full applications in a median of 119 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 0.3 miles

  • 6 Wilton Street London SW1X 7AF

    26/01240/LBC Submitted 26 Feb 2026 50 yards away

    90% 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; internal alterations. (Linked to 26/01239/FULL)

    Awaiting decision Heritage and listed buildings Extension Loft or dormer +2 27 docs

  • 6 Wilton Street London SW1X 7AF

    26/01274/LBC Submitted 27 Feb 2026 50 yards 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 50 yards away

    88% 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

  • 6 Wilton Street London SW1X 7AF

    26/06546/ADFULL Submitted 23 Sep 2026 50 yards away

    89% historically approved · decision due ~18 Nov

    Details of all new windows and sample of new brickwork to the rear facade pursuant to Conditions 4 and 6 of planning permission dated 5th August 2026 (RN: 26/01273/FULL).

    Decided Windows or glazing

  • 6 Wilton Street London SW1X 7AF

    26/06547/ADLBC Submitted 23 Sep 2026 50 yards away

    89% historically approved · decision due ~18 Nov

    Details of all new windows; new internal doors; upgrading works to retained doors; new floor coverings and how they relate to retained historic fabric; any works to plaster ceilings and sample of new brickwork to the rear facade pursuant to Conditions 4 and 6 of listed building consent dated 5th August 2026 (RN: 26/01274/LBC).

    Decided Windows or glazing

  • 6 Wilton Street London SW1X 7AF

    26/07180/ADLBC Submitted 21 Oct 2026 50 yards away

    89% historically approved · decision due ~16 Dec

    Sample of the brickwork pursuant to condition 6 of listed building consent dated 5th August 2026 (26/01274/LBC)

    Decided

In Westminster

  • 26/07528/FULL Awaiting decision

    69 Eaton Place London SW1X 8DF

    Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

    Received 5 Nov, published by the council 6 Nov 2026 Full applications
  • 26/05200/FULL Decided

    1 The Court House 165 Seymour Place London W1H 4PU

    Installation of waterproofing system to the existing lead flat roofs

    Received 3 Aug, published by the council 28 Aug 2026 Full applications
  • 26/07521/FULL Awaiting decision

    Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

    Installation of one external condenser unit

    Received 4 Nov, published by the council 6 Nov 2026 Full applications
  • 26/07508/FULL 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 26/07509/LBC)

    Received 4 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07472/FULL Awaiting decision

    Flat 3 82 New Cavendish Street London W1G 9TA

    Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

    Received 3 Nov, published by the council 6 Nov 2026 Full applications