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Planning application

123 Pall Mall London SW1Y 5EA

Awaiting decision Westminster 26/04669/FULL Full applications

Works: Extension Loft or dormer

Relates to 26/04670/LBC

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

Proposal

Partial infill of existing internal lightwell at mezzanine to fifth floors, including installation of new floors and internal façade, alterations to lightwell elevations including removal and modification of existing openings, replacement of existing rooflight, and enclosure of external escape route. (Linked to 26/04670/LBC)

As published by the council, reference 26/04669/FULL

Application record

Reference
26/04669/FULL
Category
Full applications
Status
Pending
Received
13 Jul 2026
Validated
17 Jul 2026
Postcode
SW1Y 5EA

Site history

Applications at this address on the Westminster register

This site has had 3 applications since 2026.

  • 26/05072/LBC Decided

    123 Pall Mall London SW1Y 5EA

    Internal refurbishment works and minor external alterations, including replacement and reconfiguration of modern internal finishes, partitions and fittings; refurbishment of reception, office, WC, end-of-trip and basement areas; accessibility and fire safety improvements; removal of selected suspended ceilings; replacement of entrance screens and doors; and minor alterations to the Pall Mall shopfronts.

    Submitted 28 Jul 2026 Heritage and listed buildings
  • 26/04670/LBC Awaiting decision

    123 Pall Mall London SW1Y 5EA

    Partial infill of existing internal lightwell at mezzanine to fifth floors and associated works, including installation of new floors and internal façade, alterations to lightwell elevations including removal and modification of existing openings, replacement of existing rooflight, and enclosure of external escape route. (Linked to 26/04669/FULL)

    Submitted 13 Jul 2026 Heritage and listed buildings

Timeline

Dates from the published record

  1. 13 Jul 2026

    Received by Westminster

  2. 17 Jul 2026

    Validated

    Checked as complete and ready for consideration.

  3. 25 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 11 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 91 days over the applications it decided in the last year.

Cases linked to this one on the register

  • 26/04670/LBC Awaiting decision

    123 Pall Mall London SW1Y 5EA

    Partial infill of existing internal lightwell at mezzanine to fifth floors and associated works, including installation of new floors and internal façade, alterations to lightwell elevations including removal and modification of existing openings, replacement of existing rooflight, and enclosure of external escape route. (Linked to 26/04669/FULL)

    Submitted 13 Jul 2026 Heritage and listed buildings

1 later application on the register refers to this one:

  • 26/04670/LBC Awaiting decision

    123 Pall Mall London SW1Y 5EA

    Partial infill of existing internal lightwell at mezzanine to fifth floors and associated works, including installation of new floors and internal façade, alterations to lightwell elevations including removal and modification of existing openings, replacement of existing rooflight, and enclosure of external escape route. (Linked to 26/04669/FULL)

    Submitted 13 Jul 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 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

  • 123 Pall Mall London SW1Y 5EA

    26/05072/LBC Submitted 28 Jul 2026 50 yards away

    90% historically approved · decision due ~22 Sep

    Internal refurbishment works and minor external alterations, including replacement and reconfiguration of modern internal finishes, partitions and fittings; refurbishment of reception, office, WC, end-of-trip and basement areas; accessibility and fire safety improvements; removal of selected suspended ceilings; replacement of entrance screens and doors; and minor alterations to the Pall Mall shopfronts.

    Decided Heritage and listed buildings

  • 123 Pall Mall London SW1Y 5EA

    26/04670/LBC Submitted 13 Jul 2026 50 yards away

    90% historically approved · decision due ~11 Sep

    Partial infill of existing internal lightwell at mezzanine to fifth floors and associated works, including installation of new floors and internal façade, alterations to lightwell elevations including removal and modification of existing openings, replacement of existing rooflight, and enclosure of external escape route. (Linked to 26/04669/FULL)

    Awaiting decision Heritage and listed buildings Extension Loft or dormer

  • 14 - 16 Cockspur Street London SW1Y 5BL

    25/08515/LBC Submitted 20 Nov 2025 50 yards away

    Installation of CCTV cameras to front and rear ground floor elevations; new intercom and access control panel to front entrance; alteration to existing rainwater pipe on rear elevation.

    Granted Heritage and listed buildings 33 docs

  • 14 - 16 Cockspur Street London SW1Y 5BL

    25/08514/FULL Submitted 20 Nov 2025 50 yards away

    Installation of CCTV cameras to front and rear ground floor elevations; new intercom and access control panel to front entrance; alteration to existing rainwater pipe on rear elevation.

    Granted Full applications 24 docs

  • 14 - 16 Cockspur Street London SW1Y 5BL

    25/06062/ADV Submitted 26 Aug 2025 50 yards away

    Display of one non-illuminated printed vinyl scaffold shroud measuring 25m x 23.5m and three non-illuminated inset advertisements each measuring 5.5m x 5.5m, for a one year period from 1 October 2025 to 1 October 2026.

    Refused Advertising 9 docs

  • 14 - 16 Cockspur Street London SW1Y 5BL

    25/08513/FULL Submitted 20 Nov 2025 50 yards away

    Installation of dry riser acess cover set into the ground in front of the Cockspur Street entrance to the building.

    Granted Full applications 22 docs

In Westminster

  • 26/07528/FULL Awaiting decision

    69 Eaton Place London SW1X 8DF

    Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

    Received 5 Nov, published by the council 6 Nov 2026 Full applications
  • 26/05200/FULL Decided

    1 The Court House 165 Seymour Place London W1H 4PU

    Installation of waterproofing system to the existing lead flat roofs

    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

    Installation of one external condenser unit

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

    Buckingham Palace The Mall London SW1A 1AA

    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