Washington House 40 - 41 Conduit Street London W1S 2YQ Data via plota.co.uk
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. Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicted a decision around 28 Oct 2026; it is now day 68.
Documents 24
Statements & assessments 19
Plans & drawings 3
Application forms 1
Other documents 1
Licences at this address
Licensed hours are what the licence permits, not opening times.
Site constraints 10
Show all 49 with distances
- 9 m42 and 43, Conduit Street W1Grade II
- 34 m22 and 23, Old Burlington Street W1Grade II
- 37 m46, Conduit Street W1Grade II
- 37 m8, Clifford Street W1Grade II*
- 43 m47, Conduit Street W1Grade II
- 45 m5, Clifford Street W1Grade II
- 46 m9, Clifford Street W1Grade II
- 48 m4, Clifford Street W1Grade II
- 49 m48, Conduit Street W1Grade II
- 63 m20, Conduit Street W1Grade II
- 67 m3 St George StreetGrade II
- 76 m4 St George StreetGrade II
- 78 m26, New Bond Street W1Grade II
- 78 m16, Clifford Street W1Grade II
- 78 m17, Clifford Street W1Grade II
- 78 m24A, OLD BURLINGTON STREET W1 (See details for further address information)Grade II*
- 80 m32 St George StreetGrade II
- 87 m6 and 7 St George StreetGrade II
- 94 mTime and Life BuildingGrade II*
- 99 m8 to 10 St George StreetGrade II
- 99 m30 St George StreetGrade II
- 101 mThe Fine Art SocietyGrade II
- 104 mSotheby'sGrade II
- 105 m39-42, New Bond StreetGrade II
- 107 m144-146 New Bond Street (Formerly Colnaghi)Grade II
- 110 m36, New Bond Street W1Grade II
- 110 mChurch of St George, Vestry and ObelisksGrade I
- 110 m17, Savile Row W1Grade II
- 112 m162 New Bond StreetGrade II
- 115 m47, Maddox Street, including workshops to rearGrade II
- 115 m143, New Bond Street W1Grade II
- 115 m16, Savile Row W1Grade II
- 127 m14, Savile Row W1Grade II*
- 128 m140, New Bond Street W1Grade II
- 135 m49, Maddox Street W1Grade II
- 135 m12, 12a and 13, Savile Row W1Grade II
- 136 mShop Front to Wartski JewellersGrade II
- 136 m9, Conduit Street W1Grade II*
- 137 m15a, Grafton Street W1Grade II
- 138 m1 and 2, New Burlington Street W1Grade II
- 141 m16, Grafton Street W1Grade II
- 141 m135-137, New Bond Street W1Grade II
- 144 mTriumph HouseGrade II
- 145 m11, New Bond Street W1Grade II
- 146 m5 Bollards in North End of Bruton Place Outside Numbers 1 to 7 and on Corner With Bruton StreetGrade II
- 148 m11, Savile Row W1Grade II*
- 148 mAsprey'sGrade II
- 149 m12a and 12b St George Street and 46a Maddox StreetGrade II
- 149 mNumbers 23 Albemarle Street and 16a, 16b and 16c Grafton StreetGrade II
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Every application in Westminster - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W1S 2YQ
- Received
- 21 Aug 2026
- Validated
- 21 Aug 2026
- Case officer
- Show
- Target decision
- 16 Oct 2026
- Agent
- hgh Consulting
- Freehold owner
- Show
Decision outlook
Day 68, past the statutory target. 77% of changes of use in Westminster are decided within thirteen weeks, which runs to 20 Nov 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 27 Oct 2026.
Plota live figures for changes of use decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
28 neighbours consulted · Last counted 27 Oct 2026
Consultation & key dates
- Alt. reference
- PP-15170227
- Planning Portal ref
- PP-15170227
- Comments by
- 30 Sept 2026
- Site or press notice
- 28 Aug 2026
- Env. assessment
- No
Historical activity at this location
30 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.
Freehold owner: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
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Washington House 40 - 41 Conduit Street London W1S 2YQ
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Freehold owner, on paid plans
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The consultation period closed on 30 Sept 2026.