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Planning application

The Dilly 21 Piccadilly London W1J 0BH

Awaiting decision Westminster 26/05378/FULL Full applications

Works: Loft or dormer

Relates to 26/05379/LBC

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

Proposal

External repair and conservation works to existing facades, pitched and flat roofs, dormers and chimneys (linked with 26/05379/LBC)

As published by the council, reference 26/05378/FULL

Application record

Reference
26/05378/FULL
Category
Full applications
Status
Pending
Received
7 Aug 2026
Validated
7 Aug 2026
Postcode
W1J 0BH

Site history

Applications at this address on the Westminster register

This site has had 12 applications since 2025: 5 approved, 0 refused.

  • 26/05379/LBC Awaiting decision

    The Dilly 21 Piccadilly London W1J 0BH

    External repair and conservation works to existing facades, pitched and flat roofs, dormers and chimneys (linked with 26/05378/FULL).

    Submitted 7 Aug 2026 Heritage and listed buildings
  • 26/04200/LBC Awaiting decision

    The Dilly 21 Piccadilly London W1J 0BH

    Retrospective strip-out of retail units at 23-26 Piccadilly and basements at 5A Air Street / 67 Regent Street to shell condition, removing modern fit-out, services, plant and shopfront elements, with associated making good and damp proofing.

    Submitted 25 Jun 2026 Heritage and listed buildings
  • 26/02997/ADLBC Awaiting decision

    The Dilly 21 Piccadilly London W1J 0BH

    Detailed drawings of the existing windows and historic secondary glazing, and the proposed refurbishment works, proposed windows, and proposed secondary glazing for each of the following window types: 1, 2, 3, 4, 5(a+b), 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 pursuant to condition 3 of listed building dated 5th July 2023 (RN:22/04551/LBC) (Linked to 26/02953/ADFULL)

    Submitted 5 May 2026 Conditions
  • 26/02953/ADFULL Awaiting decision

    The Dilly 21 Piccadilly London W1J 0BH

    Detailed drawings of the existing windows and historic secondary glazing, and the proposed refurbishment works, proposed windows, and proposed secondary glazing for each of the following window types: 1, 2, 3, 4, 5(a+b), 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 pursuant to condition 4 of planning permission dated 5th July 2023 (RN:22/04550/FULL) (Linked to 26/02997/ADLBC)

    Submitted 5 May 2026 Full applications
  • 26/02808/LBC Awaiting decision

    The Dilly 21 Piccadilly London W1J 0BH

    Retrospective application for internal refurbishment of Level 2 lift lobby.

    Submitted 28 Apr 2026 Heritage and listed buildings
  • 26/00445/LBC Awaiting decision

    The Dilly 21 Piccadilly London W1J 0BH

    Internal refurbishment and redecoration of 283 guest rooms and corridors, floor levels 1 to 9.

    Submitted 26 Jan 2026 Heritage and listed buildings
  • 25/09142/LBC Granted

    The Dilly 21 Piccadilly London W1J 0BH

    Internal works to refurbish the existing ground floor entrance bar and restaurant area

    Decided 5 May 2026 Heritage and listed buildings
  • 25/08948/FULL Granted

    The Dilly 21 Piccadilly London W1J 0BH

    New external roof top plant and new ventilation ductwork to rear elevation. (Linked to 25/08949/LBC)

    Decided 20 Jul 2026 Full applications
  • 25/08949/LBC Granted

    The Dilly 21 Piccadilly London W1J 0BH

    New external roof top plant and new ventilation ductwork to rear elevation. (Linked to 25/08948/FULL)

    Decided 20 Jul 2026 Heritage and listed buildings
  • 25/08908/LBC Granted

    The Dilly 21 Piccadilly London W1J 0BH

    Repair works to existing plaster ceiling in hotel restaurant kitchen.

    Decided 28 Apr 2026 Heritage and listed buildings

Timeline

Dates from the published record

  1. 7 Aug 2026

    Received by Westminster

  2. 12 Aug 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 2 October 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.

Cases linked to this one on the register

  • 26/05379/LBC Awaiting decision

    The Dilly 21 Piccadilly London W1J 0BH

    External repair and conservation works to existing facades, pitched and flat roofs, dormers and chimneys (linked with 26/05378/FULL).

    Submitted 7 Aug 2026 Heritage and listed buildings

1 later application on the register refers to this one:

  • 26/05379/LBC Awaiting decision

    The Dilly 21 Piccadilly London W1J 0BH

    External repair and conservation works to existing facades, pitched and flat roofs, dormers and chimneys (linked with 26/05378/FULL).

    Submitted 7 Aug 2026 Heritage and listed buildings

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 85 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 500 metres

  • The Dilly 21 Piccadilly London W1J 0BH

    26/05379/LBC Submitted 7 Aug 2026 0m away

    90% historically approved · decision due ~2 Oct

    External repair and conservation works to existing facades, pitched and flat roofs, dormers and chimneys (linked with 26/05378/FULL).

    Awaiting decision Heritage and listed buildings Loft or dormer

  • The Dilly 21 Piccadilly London W1J 0BH

    26/04200/LBC Submitted 25 Jun 2026 0m away

    90% historically approved · decision due ~20 Aug

    Retrospective strip-out of retail units at 23-26 Piccadilly and basements at 5A Air Street / 67 Regent Street to shell condition, removing modern fit-out, services, plant and shopfront elements, with associated making good and damp proofing.

    Awaiting decision Heritage and listed buildings Windows or glazing

  • Ground Floor And Mezzanine Floor 69 Regent Street London W1B 4ED

    26/01306/ADV Submitted 2 Mar 2026 0m away

    85% historically approved · decision due ~27 Apr

    Display of flag measuring 2.35m x 1.2m on angled flag pole.

    Awaiting decision Advertising 5 docs

  • The Dilly 21 Piccadilly London W1J 0BH

    26/02997/ADLBC Submitted 5 May 2026 0m away

    90% historically approved · decision due ~30 Jun

    Detailed drawings of the existing windows and historic secondary glazing, and the proposed refurbishment works, proposed windows, and proposed secondary glazing for each of the following window types: 1, 2, 3, 4, 5(a+b), 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 pursuant to condition 3 of listed building dated 5th July 2023 (RN:22/04551/LBC) (Linked to 26/02953/ADFULL)

    Awaiting decision Conditions Windows or glazing 9 docs

  • The Dilly 21 Piccadilly London W1J 0BH

    26/02953/ADFULL Submitted 5 May 2026 0m away

    87% historically approved · decision due ~30 Jun

    Detailed drawings of the existing windows and historic secondary glazing, and the proposed refurbishment works, proposed windows, and proposed secondary glazing for each of the following window types: 1, 2, 3, 4, 5(a+b), 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 pursuant to condition 4 of planning permission dated 5th July 2023 (RN:22/04550/FULL) (Linked to 26/02997/ADLBC)

    Awaiting decision Full applications Windows or glazing 9 docs

  • The Dilly 21 Piccadilly London W1J 0BH

    26/02808/LBC Submitted 28 Apr 2026 19m away

    90% historically approved · decision due ~30 Jun

    Retrospective application for internal refurbishment of Level 2 lift lobby.

    Awaiting decision Heritage and listed buildings 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