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Planning application

23 Grafton Street London W1S 4EY

Awaiting decision Westminster 26/00782/FULL Full Planning Permission Application

Works: Extension Loft or dormer Demolition Windows or glazing

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

Proposal

Variation of Conditions 7 and 8 of planning permission dated 17 June 2025 (RN: 25/01604/FULL) for 'Phased development including replacement of rear basement roof slab and creation of a rear extension at ground floor. Removal of rear ground floor toilet block and external fire escape stairs. Demolition of existing, altered mansard roof and construction of a new mansard roof with dormer windows and concealed plant enclosure. Extension of existing lift to serve fourth floor. Replacement of third floor rear windows with double glazed sash windows. Minor internal reconfigurations. Continued use of ground floor as retail (Use Class E(a)) and basement, first, second, third and fourth as office (Use Class E(g))'. NAMELY, to enable the use the lower ground to fourth floor levels for either Class E(a) retail and/or Class E(g) office use.

As published by the council, reference 26/00782/FULL

Application record

Reference
26/00782/FULL
Type
Full Planning Permission Application
Status
Pending
Received
10 Feb 2026
Validated
10 Feb 2026
Ward
West End
Postcode
W1S 4EY

Site history

Applications at this address on the Westminster register

This site has had 9 applications since 2025: 3 approved, 0 refused.

  • 26/06193/ADFULL Awaiting decision

    23 Grafton Street London W1S 4EY

    Details of all new windows and doors; pursuant to condition 10(B) of planning permission dated 17th June 2026 (25/01604/FULL)

    Submitted 10 Sep 2026
  • 26/01670/ADFULL Awaiting decision

    23 Grafton Street London W1S 4EY

    Detailed drawings of the alterations to party walls and buttress pursuant to part conditions 10a of planning permission dated 17th June 2025 (RN 25/01604/FULL)

    Submitted 13 Mar 2026 Full applications
  • 26/01669/ADLBC Awaiting decision

    23 Grafton Street London W1S 4EY

    Detailed drawings of All new windows and doors pursuant to part conditions 4b of listed building consent dated 17th June 2025 (RN 25/01605/LBC)

    Submitted 13 Mar 2026 Conditions
  • 26/01033/ADFULL Granted

    23 Grafton Street London W1S 4EY

    Detailed drawings, including sections (scale 1:20 and 1:5) of new rooflight pursuant to Condition 10 (B) (part) of planning permission dated 17th June 2025 (RN: 25/01604/FULL)

    Decided 1 Apr 2026 Full applications
  • 26/01025/ADLBC Granted

    23 Grafton Street London W1S 4EY

    Detailed drawings, including sections of rooflight to mansard roof pursuant to Condition 4 (B) (part) of listed building dated 17th June 2025 (RN: 25/01605/LBC)

    Decided 1 Apr 2026 Conditions
  • 26/00555/NMA Granted

    23 Grafton Street London W1S 4EY

    Amendments to planning permission dated 17 June 2025 (RN: 25/01604/FULL) for Phased development including replacement of rear basement roof slab and creation of a rear extension at ground floor. Removal of rear ground floor toilet block and external fire escape stairs. Demolition of existing, altered mansard roof and construction of a new mansard roof with dormer windows and concealed plant enclosure. Extension of existing lift to serve fourth floor. Replacement of third floor rear windows with double glazed sash windows. Minor internal reconfigurations. Continued use of ground floor as retail (Use Class E(a)) and basement, first, second, third and fourth as office (Use Class E(g)). NAMELY, to retain ground floor rear door, retain existing floor slab and rear void, retain ground-floor landing stairs in existing arrangement, and amendment of Condition 11 to require details of waste and recycling to be submitted for approval prior to occupation.

    Decided 21 Apr 2026 Amendments
  • 26/00554/LBC Awaiting decision

    23 Grafton Street London W1S 4EY

    Phased development including retention of rear basement roof slab (previously proposed for demolition and replacement), infilling of void creating an internal lightwell and the creation of a rear extension at ground floor. Removal of rear ground floor toilet block and external fire escape stairs. Demolition of existing, altered mansard roof and construction of a new mansard roof with dormer windows and concealed plant enclosure. Extension of existing lift to serve fourth floor. Replacement of third floor rear windows with double glazed sash windows. Minor internal reconfigurations.

    Submitted 30 Jan 2026 Heritage and listed buildings
  • 25/09056/ADFULL Awaiting decision

    23 Grafton Street London W1S 4EY

    Details of waste storage pursuant to condition 11 of planning permission dated 17 June 2025 (RN: 25/01604/FULL)

    Submitted 15 Dec 2025 Full applications

Timeline

Dates from the published record

  1. 10 Feb 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 7 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.

Who's behind it

Company information only, from the register and Companies House

Urbanspace Planning Ltd Agent, a planning consultancy registered in Hertford

Active · incorporated 2020 · Hertford

61 applications on PlanIndex · across 26 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

13 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.

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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 91 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

  • 23 Grafton Street London W1S 4EY

    26/01670/ADFULL Submitted 13 Mar 2026 50 yards away

    87% historically approved · decision due ~8 May

    Detailed drawings of the alterations to party walls and buttress pursuant to part conditions 10a of planning permission dated 17th June 2025 (RN 25/01604/FULL)

    Awaiting decision Full applications 12 docs

  • 23 Grafton Street London W1S 4EY

    26/01669/ADLBC Submitted 13 Mar 2026 50 yards away

    90% historically approved · decision due ~8 May

    Detailed drawings of All new windows and doors pursuant to part conditions 4b of listed building consent dated 17th June 2025 (RN 25/01605/LBC)

    Awaiting decision Conditions Windows or glazing 13 docs

  • 23 Grafton Street London W1S 4EY

    25/09056/ADFULL Submitted 15 Dec 2025 50 yards away

    87% historically approved · decision due ~9 Feb

    Details of waste storage pursuant to condition 11 of planning permission dated 17 June 2025 (RN: 25/01604/FULL)

    Awaiting decision Full applications 5 docs

  • 23 Grafton Street London W1S 4EY

    26/01033/ADFULL Submitted 18 Feb 2026 50 yards away

    Detailed drawings, including sections (scale 1:20 and 1:5) of new rooflight pursuant to Condition 10 (B) (part) of planning permission dated 17th June 2025 (RN: 25/01604/FULL)

    Granted Full applications Loft or dormer 10 docs

  • 23 Grafton Street London W1S 4EY

    26/01025/ADLBC Submitted 17 Feb 2026 50 yards away

    Detailed drawings, including sections of rooflight to mansard roof pursuant to Condition 4 (B) (part) of listed building dated 17th June 2025 (RN: 25/01605/LBC)

    Granted Conditions Loft or dormer 10 docs

  • 23 Grafton Street London W1S 4EY

    26/06193/ADFULL Submitted 10 Sep 2026 50 yards away

    89% historically approved · decision due ~5 Nov

    Details of all new windows and doors; pursuant to condition 10(B) of planning permission dated 17th June 2026 (25/01604/FULL)

    Awaiting decision Windows or glazing

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront.

    Received 15 Sep, published by the council 17 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.

    Received 15 Sep, published by the council 17 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))

    Received 11 Sep, published by the council 18 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)

    Received 11 Sep, published by the council 18 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)

    Received 1 Jun, published by the council 11 Sep 2026 Full applications