18 Seymour Street London W1H 7HU Data via plota.co.uk
Proposal
Installation of external lighting to the front entrance and front basement lightwell, along with an entry touch panel and proximity reader at the entrance. Data via plota.co.uk
Application progress
As of 7 Aug 2026, the council is no longer showing this application on their planning portal. It may have been withdrawn or re-listed under a different reference. We've stopped checking it for updates.
Documents 13
Statements & assessments 1
Plans & drawings 5
Application forms 1
Other documents 6
Site constraints 12
Show the other 21 with distances
- 3 m1, New Quebec Street W1Grade II
- 21 m4, New Quebec Street W1Grade II
- 22 m22-36, Seymour Street W1Grade II
- 22 m21-25, New Quebec Street W1Grade II
- 25 m11-19, SEYMOUR STREET W1 (See details for further address information)Grade II
- 43 m7, New Quebec Street W1Grade II
- 49 m14-19, New Quebec Street W1Grade II
- 53 mChurch of the AnnuciationGrade II*
- 55 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
- 64 mNorthern Part of Mostyn HotelGrade II
- 67 mMarylebone War MemorialGrade II
- 76 m66-69, Upper Berkeley Street W1Grade II
- 80 mThe Montcalm Hotel (2 Wallenberg Place) and 42 Great Cumberland Place, with area railingsGrade II
- 111 m11 and 12, Upper Berkeley Street W1Grade II
- 126 m13 to 15, Upper Berkeley Street W1Grade II
- 127 m10, Portman Street W1Grade II
- 137 m16, Upper Berkeley Street W1Grade II
- 140 m35A, GREAT CUMBERLAND PLACE W1 (See details for further address information)Grade II
- 143 mRoyal Intitute of British Architects Drawings CollectionGrade I
- 144 mVad Ladies ClubGrade II
- 148 m20, Montagu Street W1Grade 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 August 2026, 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
- Listed Building Consent Application
- Postcode
- W1H 7HU
- Received
- 20 Jul 2026
- Validated
- 22 Jul 2026
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 16 Sept 2026
- Applicant
- Show
- Agent
- Latitude Architects
Decision outlook
Day 79, past the statutory target. 83% of listed building works in Westminster are decided within thirteen weeks, which runs to 21 Oct 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 23 Jul 2026.
Plota live figures for listed building works decided by Westminster in the last twelve months, from validation. Westminster decision record →
Consultation & key dates
- Alt. reference
- PP-15097322
- Planning Portal ref
- PP-15097322
- Env. assessment
- No
Historical activity at this location
35 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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18 Seymour Street London W1H 7HU
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