9 Cavendish Square London W1G 9DF Data via plota.co.uk
Proposal
Installation of a non-mechanical louvre at lower ground floor level on the Chandos Street elevation. Data via plota.co.uk
Application progress
Approved on 19 Sept 2025 · Delegated Decision · Last checked 30 Oct 2026
Documents 15
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 2
Application forms 2
Consultation & comments 1
Other documents 7
Site constraints 11
Show all 38 with distances
- 10 m10a, 11 and 12, Chandos Street W1Grade II
- 14 mBridgeGrade II*
- 35 m14 Cavendish PlaceGrade II
- 42 mThe Langham HiltonGrade II
- 47 m12, Cavendish Place W1Grade II
- 48 m6-14, Harley Street W1Grade II
- 48 m15, Cavendish Square W1Grade II
- 55 m4, Harley Street W1Grade II
- 56 m2, Harley Street W1Grade II
- 56 m16, Cavendish Square W1Grade II
- 70 mNumber 7 and Attached RailingsGrade II
- 76 m2-6, Chandos Street W1Grade II
- 87 m9-13, Queen Anne Street W1Grade II
- 88 m5, Cavendish Square W1Grade II
- 91 m15 and 17, Harley StreetGrade II
- 91 m13, Harley Street W1Grade II*
- 92 m1, 3 and 5, Harley StreetGrade II
- 94 mUniversity of Westminster (formerly Regent Street Polytechnic)Grade II
- 99 m21, Harley Street W1Grade II
- 100 m4, Cavendish Square W1Grade II
- 102 m17, Cavendish Square W1Grade II
- 107 m25, Harley Street W1Grade II
- 108 m18, Cavendish Square W1Grade II*
- 112 m3, Cavendish Square W1Grade II*
- 112 m289-305 and 313-319 Regent Street W1 and 3 Cavendish PlaceGrade II
- 115 m29, Harley StreetGrade II
- 116 mHarcourt HouseGrade II
- 118 mNo 2 and Attached Railings No 4 and Attached RailingsGrade II
- 119 mChandos HouseGrade I
- 121 m8, Queen Anne Street W1Grade II
- 121 m14 and 15, Langham Place W1Grade II
- 129 mStatue of Lord George Bentinck (at South End of Square Garden)Grade II
- 130 mBroadcasting HouseGrade II*
- 131 mGroup of 3 K6 Telephone Kiosks Adjacent to Former Langham HotelGrade II
- 139 m1 and 1a, Cavendish Square W1Grade II
- 141 mChurch of All Souls, Langham PlaceGrade I
- 147 mRoyal College of NursingGrade II
- 149 m37, Harley Street W1Grade II*
Checked on 1 November 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 October 2025, 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
- W1G 9DF
- Received
- 22 Jul 2025
- Validated
- 29 Jul 2025
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 23 Sept 2025
- Decision
- Application Permitted
- Decision date
- 19 Sept 2025
- Decision level
- Delegated Decision
- Agent
- Jones Lang LaSalle Limited
- Freehold owner
- Show
How this decision compares
Decided in 52 days from validation, 24 days faster than Westminster's median of 76 for full applications. Approved, as 86% of full applications here are.
Plota live figures for full applications decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
14 neighbours consulted · Last counted 30 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14195197
- Planning Portal ref
- PP-14195197
- Comments by
- 3 Sept 2025
- Site or press notice
- 6 Aug 2025
- Env. assessment
- No
Historical activity at this location
31 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 boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
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.
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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9 Cavendish Square London W1G 9DF
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