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Planning application

18 Seymour Street London W1H 7HU

Awaiting decision Westminster 26/05009/FULL Full Planning Permission Application

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

Proposal

Installation of external lighting to the front entrance and front basement lightwell, entry touch panel and proximity reader within the reveal of the entrance doorway. (Linked with 26/05010/LBC)

As published by the council, reference 26/05009/FULL

Application record

Reference
26/05009/FULL
Type
Full Planning Permission Application
Status
Pending
Received
27 Jul 2026
Validated
27 Jul 2026
Ward
Marylebone
Postcode
W1H 7HU

Timeline

Dates from the published record

  1. 27 Jul 2026

    Received by Westminster

  2. 10 Aug 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 21 September 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 61 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Agent on file, an architecture practice

7 applications on PlanIndex

Trade members see who it is, their full track record, and every application they have filed.

See who's behind it

Documents

Plans, drawings, consultee responses and the officer's report

12 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.

Trade members open them from here.

Open the documents

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

  • 18 Seymour Street London W1H 7HU

    26/05010/LBC Submitted 27 Jul 2026 0m away

    90% historically approved · decision due ~21 Sep

    Installation of external lighting to the front entrance and front basement lightwell, entry touch panel and proximity reader within the reveal of the entrance doorway. (Linked with 26/05009/FULL)

    Awaiting decision Heritage and listed buildings 1 doc

  • 18 Seymour Street London W1H 7HU

    25/06157/LBC Submitted 29 Aug 2025 2m away

    90% historically approved · decision due ~24 Oct

    Repair strategy for the preservation of existing ceilings

    Awaiting decision Heritage and listed buildings 17 docs

  • 18 Seymour Street London W1H 7HU

    26/03007/ADLBC Submitted 7 May 2026 2m away

    90% historically approved · decision due ~2 Jul

    Details of the repairs and upgrading of the rear oriel window pursuant to condition 5 of listed building consent dated 8th August 2023 (RN:23/02367).

    Awaiting decision Conditions Windows or glazing 10 docs

  • 18 Seymour Street London W1H 7HU

    26/05164/ADLBC Submitted 30 Jul 2026 2m away

    89% historically approved · decision due ~24 Sep

    Details of new vault doors pursuant to condition 3 of listed building consent dated 01 April 2026 (RN: 26/01486/LBC)

    Decided

  • 18 Seymour Street London W1H 7HU

    26/01286/ADLBC Submitted 2 Mar 2026 2m away

    90% historically approved · decision due ~27 Apr

    Details of vaults waterproofing method pursuant to Condition 7 of listed building consent dated 8 August 2023 (RN: 23/02367/LBC)

    Awaiting decision Conditions 7 docs

  • 18 Seymour Street London W1H 7HU

    25/07393/ADLBC Submitted 13 Oct 2025 2m away

    Details of method of waterproofing of the vaults pursuant to Condition 7 of listed building consent dated 8th August 2023 (RN:23/02367/LBC)

    Refused Conditions 12 docs

In Westminster

  • 26/06024/FULL Awaiting decision

    House Of Commons Palace Of Westminster Parliament Square London SW1A 0AA

    Installation of new and replacement electronic equipment within Speaker. (Linked with 26/06025/LBC)

    3 Sep 2026 Full applications
  • 26/06017/FULL Awaiting decision

    38 Lauderdale Mansions Lauderdale Road London W9 1NE

    Installation of an external AC Unit / Heat Pump at roof level.

    2 Sep 2026 Full applications
  • 26/05938/FULL Awaiting decision

    24 Vincent Square London SW1P 2NJ

    Subdivision of existing residential property to create two self-contained 3-bedroom family homes, along with cycle parking and associated external alterations.

    1 Sep 2026 Full applications
  • 26/05935/FULL Awaiting decision

    47 Hereford Road London W2 5AH

    Installation of one number new external condenser unit to the southerly elevation service alley.

    1 Sep 2026 Full applications
  • 26/05959/FULL Awaiting decision

    Basement And Ground Floor 50 New Bond Street London W1S 1BJ

    Installation of three new condensers on the roof, within an existing designated plant area.

    1 Sep 2026 Full applications