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Planning application

26/02739/FULL

Leconfield House Curzon Street London W1J 5JA

Awaiting decision Westminster Full Planning Permission Application

Proposal

External facade alterations of Leconfield House. (Linked with 26/02747/ADV)

As published by the council, reference 26/02739/FULL

Timeline

Dates from the published record

  1. 24 Apr 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About full applications applications

How this application type works

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

Nearby applications

Within 500 metres

  • 26/03580/P3JPA Awaiting decision

    Leconfield House Curzon Street London W1J 5JA

    Prior approval for change of use from commercial (Class E) to residential (Class 3) at Leconfield House, Curzon Street under Schedule 2, Part 3, Class MA (Commercial, business and service to dwelling houses).

    1 Jun 2026 2m away Prior approval
  • 26/02747/ADV Awaiting decision

    Leconfield House Curzon Street London W1J 5JA

    Display of externally illuminated temporary display image to the scaffolding wrapping measuring 29.3m x 66m. Linked with 26/02739/FULL

    24 Apr 2026 4m away Advertising
  • 26/00938/ADLBC Awaiting decision

    Curzon House 21 - 23 Curzon Street London W1J 7TE

    Details of approval of two additional samples of the brick cleaning pursuant to condition 3 of listed building dated 15th July 2025 (RN:25/03459/LBC)

    13 Feb 2026 42m away Conditions
  • 25/07469/LBC Awaiting decision

    5 Derby Street London W1J 7AB

    Demolition of rear closet wing extension and erection of replacement extension from ground to third floor level, demolition of part of the existing roof structure and erection of a mansard roof extension at fourth floor level; excavation of pavement vaults to increase floor to ceiling heights; external alterations including the installation of replacement windows, railing and step coverings; removal of render and creation of an entrance porch; internal alterations throughout all in connection with the use of the building as four flats (Class C3). (Linked to 25/07468/FULL)

    15 Oct 2025 61m away Heritage and listed buildings
  • 25/07468/FULL Awaiting decision

    5 Derby Street London W1J 7AB

    Demolition of rear closet wing extension and erection of replacement extension from ground to third floor level, demolition of part of the existing roof structure and erection of a mansard roof extension at fourth floor level; excavation of pavement vaults to increase floor to ceiling heights; external alterations including the installation of replacement windows, railing and step coverings; removal of render and creation of an entrance porch; internal alterations throughout all in connection with the use of the building as four flats (Class C3). (Linked to 25/07469/LBC)

    15 Oct 2025 61m away Full applications
  • 12/09416/ADLBC Granted

    4 Chesterfield Gardens London W1J 5BG

    Details of gate pursuant to Condition 6 of listed building consent dated 02 September 2011 (RN: 11/06258).

    14 Sep 2012 63m away Conditions

In Westminster

  • 26/04824/ADFULL Granted

    New Zealand House 80 Haymarket London SW1Y 4TE

    Detailed design and specification of new blinds to NZH based on mock-up trials on-site. pursuant to condition 32 (i) of planning permission dated 8th April 2024 (23/00571/FULL).

    20 Jul 2026 Full applications
  • 26/04829/ADFULL Granted

    New Zealand House 80 Haymarket London SW1Y 4TE

    Details of external and internal signage strategy pursuant to Condition 33(E) of planning permission dated 8th April 2024 (RN: 23/00571/FULL)

    20 Jul 2026 Full applications
  • 26/04841/ADFULL Granted

    29 Henstridge Place London NW8 6QD

    Details of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located pursuant to condition 5 of planning permission dated 18th November 2025 (RN:25/06159).

    20 Jul 2026 Full applications
  • 26/04989/FULL Awaiting decision

    1 Kildare Terrace London W2 5JT

    Erection of a mansard roof extending over the main house and side wing, replacement lower ground rear extension with roof terrace above, lowering of lower ground floor slab, installation of an air source heat pump in rear garden, new front boundary treatment, and new second floor window on the north elevation.

    24 Jul 2026 Full applications
  • 26/04986/FULL Awaiting decision

    Inver Court Inverness Terrace London W2 6JB

    Replacement of combustible materials in the render facades; timber decking and plastic soffits/ fascias to terraces with non-combustible materials on the 5th and 6th floors.

    24 Jul 2026 Full applications