Council planning record

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.

Washington House 40 - 41 Conduit Street London W1S 2YQ

PendingReference: 26/05761/FULLCity of Westminster

Last published check: 14 Sept 2026, 17:04. Check the council record for more recent changes.

Application location

Washington House 40 - 41 Conduit Street London W1S 2YQ

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Application summary

Status
Pending
Application type
Full Planning Permission Application
Received
21 Aug 2026
Validated
21 Aug 2026
Determination deadline
Not published
Local authority
City of Westminster

Application overview

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.

Proposal details

Reference
26/05761/FULL
Alternative references
PP-15170227
Agent
hgh Consulting

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Documents 32 of 32

DocumentPublishedAction
ACK-GENERAL LETTER (G/P/C)Background Papers · PDF28 Aug 2026View
CNSLT-LA SOCIETYBackground Papers · PDF28 Aug 2026View
CNSLT-LA SOCIETYBackground Papers · PDF28 Aug 2026View
CNSLT-LA SOCIETYBackground Papers · PDF28 Aug 2026View
ECNSLT-INTERNAL CONSULTSBackground Papers · PDF28 Aug 2026View
ECNSLT-INTERNAL CONSULTSBackground Papers · PDF28 Aug 2026View
SITE NOTICE 21 OR 28 DAYS IF T&C APPL.Background Papers · PDF28 Aug 2026View
NEIGHBOUR NOTIFICATION LETTER (21D)Background Papers · PDF28 Aug 2026View
RECEIPT OF APPLICATIONOther · PDF26 Aug 2026View
APPLICATIONFORMREDACTEDApplication Form · PDF21 Aug 2026View
DAYLIGHT AND SUNLIGHT REPORTDaylight and Sunlight assessment · PDF21 Aug 2026View
DELIVERY AND SERVICING PLANBackground Papers · PDF21 Aug 2026View
HERITAGE STATEMENTHeritage Statement · PDF21 Aug 2026View
NOISE ASSESSMENT REPORTNoise impact assessment · PDF21 Aug 2026View
SUSTAINABLE DESIGN STATEMENTSustainability appraisal · PDF21 Aug 2026View
TRANSPORT STATEMENTTransport assessment · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART1Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART2Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART3Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART4Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART5Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART6Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART7Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART8Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART9Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART10Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART11Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART12Design and Access Statement · PDF21 Aug 2026View
073_WH_WS PLANNING DAS_PART13Design and Access Statement · PDF21 Aug 2026View
PLANNING STATEMENTBackground Papers · PDF21 Aug 2026View
EXISTING AND PROPOSED DRAWINGSDrawing · PDF21 Aug 2026View
SITE LOCATION PLANLocation Plan · PDF21 Aug 2026View

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Application timeline

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  1. Application Received Date

    Published milestoneCouncil source
  2. Application Validated Date

    Published milestoneCouncil source
  3. Last Site Notice Posted Date

    Published milestoneCouncil source
  4. Last Advertised In Press Date

    Published milestoneCouncil source
  5. Latest Site Notice Expiry Date

    Past published deadline

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    Council source
  6. Latest Advertisement Expiry Date

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    Council source
  7. Target Date

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Decision & conditions

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