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Planning application

Basement And Ground Floor 45 Welbeck Street London W1G 8DZ

Awaiting decision Westminster 25/08566/FULL Full Planning Permission Application

Works: Extension Loft or dormer Windows or glazing

Relates to 25/08567/LBC

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

Proposal

Installation of terrace, roof light, walk-on glazed surface, external spiral access stair, guarding rails, planter and privacy screen, to rear yard infill extension roof area, and installation of 3 external doors and an alteration to an existing external door within the rear lightwell at lower ground floor level. (Linked to 25/08567/LBC)

As published by the council, reference 25/08566/FULL

Application record

Reference
25/08566/FULL
Type
Full Planning Permission Application
Status
Pending
Received
24 Nov 2025
Validated
24 Nov 2025
Ward
Marylebone
Postcode
W1G 8DZ

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2025.

  • 25/08567/LBC Awaiting decision

    Basement And Ground Floor 45 Welbeck Street London W1G 8DZ

    Installation of terrace, roof light, walk-on glazed surface, external spiral access stair, guarding rails, planter and privacy screen, to rear yard infill extension roof area, and installation of 3 external doors and an alteration to an existing external door within the rear lightwell at lower ground floor level. (Linked to 25/08566/FULL)

    Submitted 24 Nov 2025 Heritage and listed buildings
  • 25/01595/ADLBC Awaiting decision

    Basement And Ground Floor 45 Welbeck Street London W1G 8DZ

    Details of any lath and plaster ceiling and cornices and method statement pursuant to Condition 6 (A and B) of Listed Building Consent dated 28 February 2025 (RN25/00197/LBC)

    Submitted 10 Mar 2025 Conditions
  • 25/00045/ADLBC Awaiting decision

    Basement And Ground Floor 45 Welbeck Street London W1G 8DZ

    Details of elevations or sections of the proposed partition and door across the stair landing at rear ground floor level in the context of retained fabric pursuant to Condition 5 of listed building dated 26th September 2023 (RN:23/02384/LBC)

    Submitted 6 Jan 2025 Conditions

Timeline

Dates from the published record

  1. 24 Nov 2025

    Received by Westminster

  2. 4 Aug 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 19 January 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 86 days over the applications it decided in the last year.

Cases linked to this one on the register

  • 25/08567/LBC Awaiting decision

    Basement And Ground Floor 45 Welbeck Street London W1G 8DZ

    Installation of terrace, roof light, walk-on glazed surface, external spiral access stair, guarding rails, planter and privacy screen, to rear yard infill extension roof area, and installation of 3 external doors and an alteration to an existing external door within the rear lightwell at lower ground floor level. (Linked to 25/08566/FULL)

    Submitted 24 Nov 2025 Heritage and listed buildings

1 later application on the register refers to this one:

  • 25/08567/LBC Awaiting decision

    Basement And Ground Floor 45 Welbeck Street London W1G 8DZ

    Installation of terrace, roof light, walk-on glazed surface, external spiral access stair, guarding rails, planter and privacy screen, to rear yard infill extension roof area, and installation of 3 external doors and an alteration to an existing external door within the rear lightwell at lower ground floor level. (Linked to 25/08566/FULL)

    Submitted 24 Nov 2025 Heritage and listed buildings

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.

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

  • 45 Welbeck Street London W1G 8DZ

    25/06314/FULL Submitted 5 Sep 2025 50 yards away

    88% historically approved · decision due ~31 Oct

    Replacement of windows with slimline double glazing windows and associated works.

    Awaiting decision Full applications Windows or glazing 13 docs
  • Basement And Ground Floor 45 Welbeck Street London W1G 8DZ

    25/08567/LBC Submitted 24 Nov 2025 50 yards away

    90% historically approved · decision due ~19 Jan

    Installation of terrace, roof light, walk-on glazed surface, external spiral access stair, guarding rails, planter and privacy screen, to rear yard infill extension roof area, and installation of 3 external doors and an alteration to an existing external door within the rear lightwell at lower ground floor level. (Linked to 25/08566/FULL)

    Awaiting decision Heritage and listed buildings Extension Loft or dormer +1 24 docs
  • Basement And Ground Floor 45 Welbeck Street London W1G 8DZ

    25/01595/ADLBC Submitted 10 Mar 2025 50 yards away

    89% historically approved · decision due ~5 May

    Details of any lath and plaster ceiling and cornices and method statement pursuant to Condition 6 (A and B) of Listed Building Consent dated 28 February 2025 (RN25/00197/LBC)

    Awaiting decision Conditions 8 docs
  • Basement And Ground Floor 45 Welbeck Street London W1G 8DZ

    25/00045/ADLBC Submitted 6 Jan 2025 50 yards away

    89% historically approved · decision due ~3 Mar

    Details of elevations or sections of the proposed partition and door across the stair landing at rear ground floor level in the context of retained fabric pursuant to Condition 5 of listed building dated 26th September 2023 (RN:23/02384/LBC)

    Awaiting decision Conditions 6 docs
  • 45 Welbeck Street London W1G 8DZ

    25/05979/LBC Submitted 21 Aug 2025 50 yards away

    Replacement of windows with slimline double glazing windows and associated works. (Linked to 25/06314/FULL)

    Granted Heritage and listed buildings Windows or glazing 22 docs
  • 44 Welbeck Street London W1G 8DY

    25/08129/ADLBC Submitted 5 Nov 2025 50 yards away

    Details of ventilation grilles pursuant to condition 3. ii) of listed building consent dated 20 December 2024 (RN: 24/07651/LBC). (Linked with 25/08039/ADFULL)

    Refused Conditions 7 docs

In Westminster

  • 26/05984/FULL Decided

    41 Sutherland Street London SW1V 4JX

    Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

    Received 2 Sep, published by the council 11 Sep 2026 Full applications
  • 26/06134/FULL Decided

    Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG

    Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.

    Received 8 Sep, published by the council 15 Sep 2026 Full applications
  • 26/07258/FULL Awaiting decision

    16A Croxley Road London W9 3HL

    Installation of air to air heat pumps to offices and bedrooms.

    Received 22 Oct, published by the council 23 Oct 2026 Full applications
  • 26/07193/FULL Awaiting decision

    98 Victoria Street London SW1E 5JL

    Shopfront alterations. (Linked with 26/07194/ADV)

    Received 21 Oct, published by the council 22 Oct 2026 Full applications
  • 26/07187/FULL Awaiting decision

    Ground Floor Flat 151 Portnall Road London W9 3BN

    Erection of a single storey rear extension.

    Received 21 Oct, published by the council 22 Oct 2026 Full applications