Denham Building 27 St James's Street London SW1A 1HA

This site has had 2 applications since 2026.

• 26/01779/FULL Awaiting decision

  Denham Building 27 St James's Street London SW1A 1HA

  Creation of new landscaping including the installation of new planting, external lighting, street furniture and replacement entrance to the Bank Building fronting the Smithson Plaza. (Linked with 26/01780/LBC)

  Submitted 19 Mar 2026 Full applications

1. 19 Mar 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 14 May 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.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided heritage and listed building applications in a median of 119 days. More in our guide to how long planning decisions take.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• Denham Building 27 St James's Street London SW1A 1HA

  26/01779/FULL Submitted 19 Mar 2026 50 yards away

  88% historically approved · decision due ~14 May

  Creation of new landscaping including the installation of new planting, external lighting, street furniture and replacement entrance to the Bank Building fronting the Smithson Plaza. (Linked with 26/01780/LBC)

  Awaiting decision Full applications 10 docs

• Smithson Tower 25 St James's Street London SW1A 1HA

  25/09169/LBC Submitted 18 Dec 2025 50 yards away

  Installation of new external ductwork and associated external alterations to fifth floor roof level including replacement roof membranes, access hatch and installation of a maintenance-only door to existing roof plant enclosure.

  Granted Heritage and listed buildings Roofing 23 docs

• Basement And Ground Floor Smithson Tower 25 St James's Street London SW1A 1HA

  25/06882/LBC Submitted 25 Sep 2025 50 yards away

  Installation of a fascia sign, a wall plaque and 8 vinyl logos behind glazing.

  Granted Heritage and listed buildings Windows or glazing 16 docs

• Basement And Ground Floor Smithson Tower 25 St James's Street London SW1A 1HA

  25/06931/ADV Submitted 26 Sep 2025 50 yards away

  Display of non-illuminated fascia sign measuring 0.63m x 0.22m; and wall plaque sign measuring 0.28m x 0.45m.

  Granted Advertising 8 docs

• Smithson Tower 25 St James's Street London SW1A 1HA

  26/00095/LBC Submitted 8 Jan 2026 50 yards away

  Installation of 120 metres of fibre telecommunications cable from the 13th floor communications room to the basement intake room.

  Granted Heritage and listed buildings 15 docs

• Smithson Tower 25 St James's Street London SW1A 1HA

  25/09168/FULL Submitted 18 Dec 2025 50 yards away

  Installation of new external ductwork and associated external alterations to fifth floor roof level including replacement roof membranes, access hatch and installation of a maintenance-only door to existing roof plant enclosure.

  Granted Full applications Roofing 24 docs

• 26/06288/LBC Decided

  Barness Court 6 - 8 Westbourne Terrace London W2 3UW

  Installation of a gas pipework to south elevation and wall. (Linked with 26/06287/FULL)

  Received 14 Sep, published by the council 21 Sep 2026 Heritage and listed buildings
• 26/07529/LBC Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water supply pipe on rear courtyard elevation. (Linked with 26/07528/FULL)

  Received 5 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
• 26/07509/LBC 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 26/07508/FULL)

  Received 4 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
• 26/07473/LBC Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07472/FULL)

  Received 3 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
• 26/07471/LBC Awaiting decision

  12 Queen Anne's Gate London SW1H 9AA

  Excavation of single-storey basement, internal reconfiguration and installation of modern services. (Linked with 26/07470/FULL)

  Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings