22 Seymour Place London W1H 7NJ Data via plota.co.uk
Proposal
Retention of the existing extract duct with brick cladding and associated fans, and duct attenuation, along with the installation of three AC units within an acoustic enclosure at the rear ground-floor roof level. Data via plota.co.uk
Application progress
Approved on 3 Mar 2026 · Complex Delegated Decision · Last checked 18 Oct 2026
Documents 26
Decision & officer reports 3
Statements & assessments 1
Plans & drawings 10
Application forms 2
Consultation & comments 1
Other documents 9
Site constraints 12
Show all 31 with distances
- 6 m52, Upper Berkeley Street W1Grade II
- 7 m53-60, Upper Berkeley Street W1Grade II
- 24 m50, Upper Berkeley Street W1Grade II
- 29 m47-49, Upper Berkeley Street W1Grade II
- 35 m19-27, Upper Berkeley StreetGrade II
- 44 m35A, GREAT CUMBERLAND PLACE W1 (See details for further address information)Grade II
- 45 m29 and 30, Upper Berkeley Street W1Grade II
- 54 m31-33, Upper Berkeley Street W1Grade II
- 65 mWest London SynagogueGrade II
- 69 m37, Great Cumberland Place W1Grade II
- 72 m37a, Great Cumberland Place W1Grade II
- 81 m41, Great Cumberland Place W1Grade II
- 81 m39, Great Cumberland Place W1Grade II
- 90 m43, Great Cumberland Place W1Grade II
- 95 m47, Great Cumberland Place W1Grade II
- 96 mThe Montcalm Hotel (2 Wallenberg Place) and 42 Great Cumberland Place, with area railingsGrade II
- 100 mK2 Telephone Kiosk Outside Number 64Grade II
- 101 m51, Great Cumberland Place W1Grade II
- 101 m49, Great Cumberland Place W1Grade II
- 103 mVad Ladies ClubGrade II
- 114 m16, Upper Berkeley Street W1Grade II
- 115 m53 and 55, Great Cumberland Place W1Grade II
- 115 mWestern Marble Arch Synagogue (1 Wallenberg Place and 13 Quebec Mews), 24 Great Cumberland Place and 38 Seymour Street, with area railings, and standard lanterns to 38 Seymour StreetGrade II
- 123 m13 to 15, Upper Berkeley Street W1Grade II
- 126 m54 and 56, Great Cumberland Place W1Grade II
- 127 m57-63, Great Cumberland Place W1Grade II
- 128 m1, Connaught Street W2Grade II
- 134 m58-68, Great Cumberland Place W1Grade II
- 137 m16-18 Connaught PlaceGrade II
- 143 m49 and 50, Bryanston Square W1Grade II
- 143 m22-36, Seymour Street W1Grade II
Checked on 2 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 September 2012, the latest held for this property. The building may have changed since. View the certificate
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W1H 7NJ
- Received
- 19 Sept 2025
- Validated
- 25 Sept 2025
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 6 Mar 2026
- Decision
- Application Permitted
- Decision date
- 3 Mar 2026
- Decision level
- Complex Delegated Decision
- Applicant
- Show
- Agent
- Monmouth Planning Ltd
How this decision compares
Decided in 159 days from validation, 83 days slower 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
15 neighbours consulted · Last counted 18 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14337167
- Planning Portal ref
- PP-14337167
- Comments by
- 5 Nov 2025
- Site or press notice
- 2 Oct 2025
- Env. assessment
- No
Historical activity at this location
26 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.
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22 Seymour Place London W1H 7NJ
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