1 Chiltern Street London W1U 7PA Data via plota.co.uk
Proposal
Replacement of rooftop plant and associated screening, switched kitchen extract/supplies, new access hatch to roof and installation of a pressurised stair system. (Linked with 26/05545/LBC) Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision around 9 Oct 2026, from Westminster's recent commercial and major works.
Documents 4
Plans & drawings 2
Other documents 2
Associated applications 2
- Replacement of rooftop plant and associated screening, switched kitchen extract/supplies, new access hatch to roof…
Site constraints 10
Show the other 19 with distances
- 31 m28A, MANCHESTER STREET W1 (See details for further address information)Grade II
- 39 m50-54, Blandford Street W1Grade II
- 49 m48, Blandford Street W1Grade II
- 55 m46, Blandford Street W1Grade II
- 65 m61 and 63, Blandford Street W1Grade II
- 69 m65, Blandford Street W1Grade II
- 74 m18-27, Manchester Street W1Grade II
- 74 m67, BLANDFORD STREET (See details for further address information)Grade II
- 74 m47A, MANCHESTER STREET W1 (See details for further address information)Grade II
- 77 m34, Baker Street W1Grade II
- 80 m47 and 48, Manchester Street W1Grade II
- 90 m53-55, Dorset Street W1Grade II
- 92 m49 and 50, Manchester Street W1Grade II
- 104 m51 and 52, Manchester Street W1Grade II
- 112 mBarley MowGrade II
- 114 m2 and 3, Dorset Street W1Grade II
- 115 mDurrant's HotelGrade II
- 118 mWestmoreland Arms Public HouseGrade II
- 142 mRoman Catholic Church of St James (Spanish Place)Grade 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.
Building
From the energy performance certificate lodged in December 2013, the latest held for this property. The building may have changed since. View the certificate
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
- W1U 7PA
- Received
- 14 Aug 2026
- Validated
- 14 Aug 2026
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 9 Oct 2026
- Applicant
- Show
- Agent
- WSP UK Limited
- Leaseholder
- Show
Decision outlook
Day 56 of the 56-day target. Westminster usually decides commercial and major works by day 56.
Plota live figures for commercial and major works decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
54 neighbours consulted · Last counted 7 Oct 2026
Consultation & key dates
- Alt. reference
- PP-15119200
- Planning Portal ref
- PP-15119200
- Env. assessment
- No
Historical activity at this location
45 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.
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
Leaseholders: 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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1 Chiltern Street London W1U 7PA
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Leaseholders, on paid plans
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