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Planning application

Sofia House 19 Conduit Street London W1S 2BH

Awaiting decision Westminster 26/02841/FULL Full Planning Permission Application

Works: Extension Loft or dormer

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

Proposal

Erection of five storey rear extension including extension of lower ground floor, roof level alterations, including new dormers and extension to rear, installation of plant and alterations associated with refurbishment of building

As published by the council, reference 26/02841/FULL

Application record

Reference
26/02841/FULL
Type
Full Planning Permission Application
Status
Pending
Received
29 Apr 2026
Validated
29 Apr 2026
Ward
West End
Postcode
W1S 2BH

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2026.

  • 26/05695/ADFULL Awaiting decision

    Sofia House 19 Conduit Street London W1S 2BH

    Details of the pre-demolition audit in accordance with section 4.6 of the GLA's adopted Circular Economy; pursuant to condition 12 of Planning Permission dated 31 July 2026 (26/02841/FULL)

    Submitted 19 Aug 2026

Timeline

Dates from the published record

  1. 29 Apr 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 24 June 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 66 days over the applications it decided in the last year.

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 26/05695/ADFULL Awaiting decision

    Sofia House 19 Conduit Street London W1S 2BH

    Details of the pre-demolition audit in accordance with section 4.6 of the GLA's adopted Circular Economy; pursuant to condition 12 of Planning Permission dated 31 July 2026 (26/02841/FULL)

    Submitted 19 Aug 2026

Who's behind it

Company information only, from the register and Companies House

Jones Lang LaSalle Limited Agent, registered in London

Active · incorporated 1974 · London

198 applications on PlanIndex · across 36 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

55 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 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

  • 20 Conduit Street London W1S 2XW

    26/02022/FULL Submitted 26 Mar 2026 50 yards away

    87% historically approved · decision due ~21 May

    Installation of two conservation style rooflights at roof level, installation of one rear casement window at fifth floor level, replacement of existing maintenance access door with new glazed door, replacement of damaged roof tiles and installation of insulation; and removal and installation of two new MVHR extract and intake roof cowls. (Linked to 26/02023/LBC)

    Awaiting decision Full applications Loft or dormer Roofing +1 26 docs

  • 20 Conduit Street London W1S 2XW

    25/06305/LBC Submitted 4 Sep 2025 50 yards away

    Installation of replacement ground floor primary office entrance door; Retention of fanlight and recolouring of building number signage and replacement of intercom. (Linked to 25/06304/FULL)

    Granted Heritage and listed buildings 13 docs

  • 20 Conduit Street London W1S 2XW

    25/06304/FULL Submitted 4 Sep 2025 50 yards away

    Installation of replacement ground floor primary office entrance door; Retention of fanlight and recolouring of building number signage and replacement of intercom.(Linked to 25/06305/LBC)

    Granted Full applications 18 docs

  • Sofia House 19 Conduit Street London W1S 2BH

    26/05695/ADFULL Submitted 19 Aug 2026 50 yards away

    89% historically approved · decision due ~14 Oct

    Details of the pre-demolition audit in accordance with section 4.6 of the GLA's adopted Circular Economy; pursuant to condition 12 of Planning Permission dated 31 July 2026 (26/02841/FULL)

    Awaiting decision Demolition

  • 20 Conduit Street London W1S 2XW

    26/05636/ADFULL Submitted 18 Aug 2026 50 yards away

    89% historically approved · decision due ~13 Oct

    Details of conservation rooflights, new rear door, and new rear window pursuant to condition 4 of planning permission dated 27.05.2026 (RN:26/02022/FULL). (Linked with 26/05630/ADLBC)

    Decided Loft or dormer Windows or glazing

  • 20 Conduit Street London W1S 2XW

    26/05630/ADLBC Submitted 18 Aug 2026 50 yards away

    89% historically approved · decision due ~13 Oct

    Detailed drawings of the Conservation Rooflights, new Rear Door, and new rear window; Pursuant to condition 2 of Listed Building Consent dated 27th May 2026 (26/02023/LBC)

    Decided Loft or dormer Windows or glazing

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront with Medication Dispensing Outlet.

    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 replacement window and installation of double opening door.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06294/FULL Awaiting decision

    15 Eaton Mews South London SW1W 9HP

    Installation of railings and sliding lantern light at main roof level in connection with the use of the roof as a terrace.

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06273/FULL Awaiting decision

    9A Grosvenor Square London W1K 5AE

    Installation of new natural Portland Stone step surfaces to the two highway facing front entrance doors. (Linked to 26/05473/LBC)

    Received 14 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06277/FULL Awaiting decision

    Hospital 60 Grove End Road London NW8 9NH

    Variation of conditions 1 and removal of condition 6 of planning permission dated 12th November 2019 (RN 19/07202/FULL) for the Variation of condition 12 of planning permission dated 21 June 2013 (RN: 13/01330/FULL) for the: Demolition of single storey block to north east elevation of main hospital building. Erection of three storey building (plus basement level) with link to existing hospital fronting onto Grove End Road and erection of two storey extension to the main entrance building, both to provide additional hospital accommodation (Class D1). Installation of mechanical plant and associated external alterations. NAMELY, to include amended phase 2 drawings and condition 6 to be removed as the as approved 11 car parking space are no longer proposed and the car lift is no longer shown on the amended plans.

    Received 14 Sep, published by the council 22 Sep 2026 Full applications