Planning application
Washington House 40 - 41 Conduit Street London W1S 2YQ
Works: Extension Demolition
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
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.
As published by the council, reference 26/05761/FULL
Application record
- Reference
- 26/05761/FULL
- Category
- Full applications
- Status
- Pending
- Received
- 21 Aug 2026
- Validated
- 21 Aug 2026
- Postcode
- W1S 2YQ
Site history
Applications at this address on the Westminster register
This site has had 4 applications since 2023: 2 approved, 0 refused.
-
26/06665/CLEUD Awaiting decision
Washington House 40 - 41 Conduit Street London W1S 2YQ
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.
-
25/07055/FULL Granted
Washington House 40 - 41 Conduit Street London W1S 2YQ
Use of basement and part ground floor as dual alternative restaurant or retail (Class E) and use of part ground and first to sixth floors as offices (Class E), including provisions for cycle storage, refuse and servicing, and the erection of a 7th storey extension with front terrace to provide additional office (Class E) floorspace and the replacement of plant within an acoustic enclosure at roof level.
-
23/03930/FULL Granted
Washington House 40 - 41 Conduit Street London W1S 2YQ
Use of basement and part ground floor as dual alternative restaurant or retail (Class E) and use of part ground and first to sixth floors as offices (Class E), including provisions for cycle storage, refuse and servicing.
Timeline
Dates from the published record
-
21 Aug 2026
Received by Westminster
-
28 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 16 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 88 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
hgh Consulting Ltd Agent
416 applications on PlanIndex · across 41 councils · 90% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
32 documents on file for this application
- ACK-GENERAL LETTER (G/P/C)
- CNSLT-LA SOCIETY
- CNSLT-LA SOCIETY
- CNSLT-LA SOCIETY
- ECNSLT-INTERNAL CONSULTS
- ECNSLT-INTERNAL CONSULTS
- SITE NOTICE 21 OR 28 DAYS IF T&C APPL.
- NEIGHBOUR NOTIFICATION LETTER (21D)
- RECEIPT OF APPLICATION
- APPLICATIONFORMREDACTED
- DAYLIGHT AND SUNLIGHT REPORT
- DELIVERY AND SERVICING PLAN
- HERITAGE STATEMENT
- NOISE ASSESSMENT REPORT
- SUSTAINABLE DESIGN STATEMENT
- TRANSPORT STATEMENT
- 073_WH_WS PLANNING DAS_PART1
- 073_WH_WS PLANNING DAS_PART2
- 073_WH_WS PLANNING DAS_PART3
- 073_WH_WS PLANNING DAS_PART4
- 073_WH_WS PLANNING DAS_PART5
- 073_WH_WS PLANNING DAS_PART6
- 073_WH_WS PLANNING DAS_PART7
- 073_WH_WS PLANNING DAS_PART8
- 073_WH_WS PLANNING DAS_PART9
- 073_WH_WS PLANNING DAS_PART10
- 073_WH_WS PLANNING DAS_PART11
- 073_WH_WS PLANNING DAS_PART12
- 073_WH_WS PLANNING DAS_PART13
- PLANNING STATEMENT
- EXISTING AND PROPOSED DRAWINGS
- SITE LOCATION PLAN
Watch members (£5 a month) open the document list from here.
Open the documentsWhat 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
-
Washington House 40 - 41 Conduit Street London W1S 2YQ
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
Use of basement and part ground floor as dual alternative restaurant or retail (Class E) and use of part ground and first to sixth floors as offices (Class E), including provisions for cycle storage, refuse and servicing, and the erection of a 7th storey extension with front terrace to provide additional office (Class E) floorspace and the replacement of plant within an acoustic enclosure at roof level.
Granted Full applications Extension 34 docs -
Washington House 40 - 41 Conduit Street London W1S 2YQ
Use of basement and part ground floor as dual alternative restaurant or retail (Class E) and use of part ground and first to sixth floors as offices (Class E), including provisions for cycle storage, refuse and servicing.
Granted Full applications 25 docs -
42 Conduit Street London W1S 2YH
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
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 -
Basement And Ground Floor 42 Conduit Street London W1S 2YH
88% historically approved · decision due ~16 Sep
Installation of a replacement shopfront.
Awaiting decision Full applications Windows or glazing
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-
26/05708/FULL Decided
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