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Planning application

14 Devonshire Mews West London W1G 6QE

Awaiting decision Westminster 26/01055/FULL Full Planning Permission Application

Works: Extension

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

Proposal

The replacement of an existing full-width, half-depth rear kitchen/diner extension and the replacement of metal roller shutter garage door to the front with a timber garage door.

As published by the council, reference 26/01055/FULL

Application record

Reference
26/01055/FULL
Type
Full Planning Permission Application
Status
Pending
Received
18 Feb 2026
Validated
18 Feb 2026
Ward
Marylebone
Postcode
W1G 6QE

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2026.

  • 26/07453/ADFULL Awaiting decision

    14 Devonshire Mews West London W1G 6QE

    Details of the replacement of the approved render finish to the rear extension with brickwork pursuant to Condition 3 of planning permission dated 08.06.2026 (RN: 26/01055/FULL).

    Submitted 2 Nov 2026

Timeline

Dates from the published record

  1. 18 Feb 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 15 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

1 later application on the register refers to this one:

  • 26/07453/ADFULL Awaiting decision

    14 Devonshire Mews West London W1G 6QE

    Details of the replacement of the approved render finish to the rear extension with brickwork pursuant to Condition 3 of planning permission dated 08.06.2026 (RN: 26/01055/FULL).

    Submitted 2 Nov 2026

Who's behind it

Company information only, from the register and Companies House

Coull Architecture Ltd Agent, an architecture practice registered in London

Active · incorporated 2018 · London

21 applications on PlanIndex · across 5 councils · 86% 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

25 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

  • Second Floor Flat 11 Devonshire Place London W1G 6HT

    23/00311/ADLBC Submitted 18 Jan 2023 50 yards away

    Details of secondary glazing, skirtings, cornices, architraves and amended reflected ceiling plans showing areas of ceiling to be replaced/repaired pursuant to conditions 4 and 6 of listed building consent dated 20 December 2022 (RN: 22/07393/LBC)

    Granted Conditions Windows or glazing 12 docs

  • 11 Devonshire Place London W1G 6HT

    10/07951/LBC Submitted 16 Sep 2010 50 yards away

    Internal alterations at first floor level.

    Granted Heritage and listed buildings 9 docs

  • 14 Devonshire Mews West London W1G 6QE

    26/07453/ADFULL Submitted 2 Nov 2026 50 yards away

    89% historically approved · decision due ~28 Dec

    Details of the replacement of the approved render finish to the rear extension with brickwork pursuant to Condition 3 of planning permission dated 08.06.2026 (RN: 26/01055/FULL).

    Awaiting decision Extension

  • 15 Devonshire Place London W1G 6HF

    18/08988/ADFULL Submitted 22 Oct 2018 50 yards away

    Details of scheme for the storage and disposal of refuse and recycling pursuant to condition 4 of planning permission dated 28th September 2018 (RN:17/09042)

    Granted Full applications 14 docs

  • 15 Devonshire Place London W1G 6HF

    17/05863/LBC Submitted 4 Jul 2017 50 yards away

    Erection of lobby enclosure at basement level under the ground floor external landing.

    Granted Heritage and listed buildings 10 docs

  • Ground Floor And First Floor 11 Devonshire Place London W1G 6HT

    23/03450/LBC Submitted 23 May 2023 50 yards away

    Installation of air conditioning units to the rear courtyard; renewal of M&E services and internal AC units, fire protection measures to doors, floors and walls; replacement of existing modern doors with fire resistant doors; removal of non-original partitioning, new bathrooms, shower room and kitchen including lowered ceilings; draft proofing to existing windows and installation of secondary glazing; and enclosing the existing lift within glazed cladding. (Linked with 23/03449/FULL)

    Granted Heritage and listed buildings Windows or glazing 21 docs

In Westminster

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    Received 5 Nov, published by the council 6 Nov 2026 Full applications
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    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

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    Received 4 Nov, published by the council 6 Nov 2026 Full applications
  • 26/07508/FULL Awaiting decision

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    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