15 Upper Wimpole Street London W1G 6LS Data via plota.co.uk
Proposal
Infilling of courtyard between the main house and mews house at basement and ground level, installation of glazed sloping roof at rear ground floor level, addition of a glazed openable roof over the central lightwell at ground floor level, excavation beneath basement to provide swimming pool, creation of terrace at rear ground floor level with area of planting, creation of new door to facilitate access to terrace at rear first floor level, installation of plant equipment in roof space and at basement level, alterations to the façade and associated internal and external alterations, all in connection with existing dwelling house (Site includes 2 Dunstable Mews). (Linked with 25/05015/FULL) Data via plota.co.uk
Application progress
Refused on 12 Sept 2025 · Delegated Decision · Last checked 29 Oct 2026
Documents 48
Decision & officer reports 2
Statements & assessments 5
Plans & drawings 24
Application forms 1
Consultation & comments 3
Other documents 13
Associated applications 6
Site constraints 11
Show the other 38 with distances
- 28 m8-13, Upper Wimpole Street W1Grade II
- 32 mNos. 33 to 41, Devonshire PlaceGrade II
- 43 m6-12, DEVONSHIRE PLACE W1 (See details for further address information)Grade II
- 47 m7, Upper Wimpole Street W1Grade II
- 53 m1-6, Upper Wimpole Street W1Grade II
- 68 m24, Upper Wimpole Street W1Grade II
- 75 m115a, Harley Street W1Grade II
- 76 m25, Upper Wimpole Street W1Grade II
- 84 m34, Weymouth StreetGrade II
- 84 m26, Upper Wimpole Street W1Grade II
- 85 m36, Weymouth StreetGrade II
- 86 m107 and 109, Harley Street W1Grade II*
- 89 m111 and 113, Harley Street W1Grade II
- 91 m101 Harley StreetGrade II
- 99 m115, Harley Street W1Grade II*
- 103 m121, Harley Street W1Grade II*
- 107 m97 and 99, Harley Street W1Grade II
- 111 m44 and 45, Wimpole Street W1Grade II
- 112 m43, Weymouth Street W1Grade II
- 113 m27-31, Devonshire Place W1Grade II
- 114 m45-49, Weymouth StreetGrade II
- 115 m42 and 43, Wimpole Street W1Grade II
- 118 m127-131, Harley Street W1Grade II
- 124 m93, Harley Street W1Grade II
- 128 m46-48, Wimpole Street W1Grade II
- 134 m13, Devonshire Place W1Grade II
- 137 m110 and 112, Harley Street W1Grade II
- 137 m108, Harley Street W1Grade II
- 137 m106, Harley Street W1Grade II*
- 138 m104, Harley Street W1Grade II
- 140 m100 and 102, Harley Street W1Grade II
- 140 m135-145, Harley Street W1Grade II
- 142 m14-17, Devonshire Place W1Grade II
- 145 m98, Harley Street W1Grade II
- 146 m13, Devonshire Mews West W1Grade II
- 147 m120 and 122, Harley Street W1Grade II
- 148 m39, Wimpole Street W1Grade II
- 148 m96, 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.
Sales history 3
Last sold for £12,000,000 in November 2024. Other property, freehold.
More than one property is recorded at this address: HM Land Registry does not always give the flat or unit.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in January 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
- Listed Building Consent Application
- Postcode
- W1G 6LS
- Received
- 18 Jul 2025
- Validated
- 18 Jul 2025
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 12 Sept 2025
- Decision
- Application Refused
- Decision date
- 12 Sept 2025
- Decision level
- Delegated Decision
- Appeal
- Dismissed · 12 May 2026 · Written Representations · Inspectorate case 3374154 ↗
- Applicant
- Show
- Agent
- Planning Potential Ltd.
How this decision compares
Decided in 56 days from validation, about the council's usual 57 days. Refused, as 10% of listed building works here are.
Plota live figures for listed building works decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
Last counted 29 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14143679
- Planning Portal ref
- PP-14143679
- Comments by
- 27 Aug 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.
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
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.
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15 Upper Wimpole Street London W1G 6LS
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Council archive
15 Upper Wimpole Street London W1G 6LS
Variation of condition 1 of planning permission dated 17 September 2024 (RN:23/07898/FULL) for Infilling of courtyard between the main house and mews house at basement level, installation of glazed sloping roof at rear ground floor level, excavation beneath basement to provide swimming pool, creation of terrace at rear ground floor level, creation of new door to facilitate access to terrace at rear first floor level, installation of plant equipment in roof space and at basement level and associated internal and…
- Received
- 7 Feb 2025
- Outcome
- Pending
- Type
- Full
15 Upper Wimpole Street London W1G 6LS
Infilling of courtyard between the main house and mews house at basement level, installation of glazed sloping roof at rear ground floor level, excavation beneath basement to provide swimming pool, creation of terrace at rear ground floor level, installation of plant equipment in roof space and at basement level and associated internal and external alterations, all in connection with existing dwelling house (Site includes 2 Dunstable Mews). (Linked with 23/07899/LBC)
- Received
- 14 Nov 2023
- Outcome
- Pending