Basement And Ground Floor 42 Conduit Street London W1S 2YH

This site has had 3 applications since 2026.

• 26/04883/ADV Decided

  Basement And Ground Floor 42 Conduit Street London W1S 2YH

  Display of an internally illuminated (letters only) sign measuring 0.13m x 0.79m on mullion and an internally illuminated (letters only) hanging sign measuring 0.70m x 1.25m.

  Submitted 21 Jul 2026 Advertising
• 26/04488/LBC Awaiting decision

  Basement And Ground Floor 42 Conduit Street London W1S 2YH

  Replacement shopfront; installation of fascia and hanging signs; layout alterations; and refurbishment works. (Linked with 26/04882/FULL & 26/04883/ADV)

  Submitted 6 Jul 2026 Heritage and listed buildings

1. 21 Jul 2026

   Received by Westminster

2. 22 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 29 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 16 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.

1 later application on the register refers to this one:

• 26/04488/LBC Awaiting decision

  Basement And Ground Floor 42 Conduit Street London W1S 2YH

  Replacement shopfront; installation of fascia and hanging signs; layout alterations; and refurbishment works. (Linked with 26/04882/FULL & 26/04883/ADV)

  Submitted 6 Jul 2026 Heritage and listed buildings

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.

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.

• Basement And Ground Floor 42 Conduit Street London W1S 2YH

  26/04883/ADV Submitted 21 Jul 2026 50 yards away

  82% historically approved · decision due ~16 Sep

  Display of an internally illuminated (letters only) sign measuring 0.13m x 0.79m on mullion and an internally illuminated (letters only) hanging sign measuring 0.70m x 1.25m.

  Decided Advertising

• 42 Conduit Street London W1S 2YH

  25/07180/ADLBC Submitted 25 Sep 2025 50 yards away

  Detailed drawings (scale 1:5 & 1:2) of all new doors pursuant to Condition 3 b) of listed building consent dated 02 May 2024 (RN: 23/07572/LBC)

  Granted Conditions 13 docs

• Basement And Ground Floor 42 Conduit Street London W1S 2YH

  26/04488/LBC Submitted 6 Jul 2026 50 yards away

  90% historically approved · decision due ~16 Sep

  Replacement shopfront; installation of fascia and hanging signs; layout alterations; and refurbishment works. (Linked with 26/04882/FULL & 26/04883/ADV)

  Awaiting decision Heritage and listed buildings Windows or glazing 19 docs

• Washington House 40 - 41 Conduit Street London W1S 2YQ

  26/06665/CLEUD Submitted 29 Sep 2026 50 yards away

  84% historically approved · decision due ~24 Nov

  Confirmation that material operations comprised in the development granted planning permission on 29 September 2023 (Ref: 23/03930/FULL) lawfully began before the expiry of the three year time period.

  Awaiting decision Lawful development

• Washington House 40 - 41 Conduit Street London W1S 2YQ

  26/05761/FULL Submitted 21 Aug 2026 50 yards away

  88% historically approved · decision due ~16 Oct

  Use of part basement and part ground floor as dual alternative restaurant or retail (Class E) and use of part basement ground and first to sixth floors as offices (Class E), provisions for cycle storage, refuse and servicing at mezzanine level; demolition of existing roof level plant area; various extensions to the building including rear infill extension at mezzanine level, rear extension at 4th and 5th floor levels, front side and rear extensions to the 6th floor level, construction of a 7th storey extension all to provide additional office (Class E) floorspace; replacement of the rear curtain wall facade at mezzanine to 3rd floor levels; the replacement of plant within an acoustic enclosure at roof level; reconfiguration of the ground floor Conduit Street frontage and other associated development.

  Awaiting decision Full applications Extension Demolition 32 docs

• 44 Conduit Street London W1S 2YL

  02/06201/ADV Submitted 5 Aug 2002 50 yards away

  Installation of a flag and flagpole on the front elevation

  Refused Advertising 3 docs

• 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