8 Devonshire Close London W1G 7BA Data via plota.co.uk
Proposal
Replacement of existing second floor with a mansard roof, alterations to fenestration of the front and rear elevations, construction of a new basement level and other associated development (Class C3). Data via plota.co.uk
Application progress
Approved on 2 Jul 2026 · Complex Delegated Decision · Last checked 23 Sept 2026
Documents 49
Decision & officer reports 2
Statements & assessments 13
Plans & drawings 22
Application forms 1
Consultation & comments 2
Other documents 9
Associated applications 2
- Replacement of existing second floor with a mansard roof, alterations to fenestration of the front and rear elevations…
Conditions 5 discharged
Site constraints 10
Show all 55 with distances
- 3 m96, Harley Street W1Grade II
- 6 m98, Harley Street W1Grade II
- 6 m92 and 94, Harley Street W1Grade II*
- 13 m100 and 102, Harley Street W1Grade II
- 24 m90a, Harley Street W1Grade II
- 28 m28 and 30, Weymouth StreetGrade II
- 29 m90, Harley Street W1Grade II
- 32 m104, Harley Street W1Grade II
- 43 m106, Harley Street W1Grade II*
- 49 m108, Harley Street W1Grade II
- 52 m101 Harley StreetGrade II
- 52 mNumber 33, Including Conservatory, Area Walls and Party Walls With Tile MuralsGrade II
- 53 m97 and 99, Harley Street W1Grade II
- 54 m22, Weymouth StreetGrade II
- 54 m31, Weymouth Street W1Grade II
- 57 m110 and 112, Harley Street W1Grade II
- 57 m88, Harley Street W1Grade II*
- 58 m93, Harley Street W1Grade II
- 61 m40 Devonshire StreetGrade II
- 61 m107 and 109, Harley Street W1Grade II*
- 65 m43-47, Devonshire Street W1Grade II
- 65 m86, Harley Street W1Grade II
- 71 m111 and 113, Harley Street W1Grade II
- 74 m59-67, Portland Place W1Grade II*
- 75 m91, Harley Street W1Grade II
- 83 m115, Harley Street W1Grade II*
- 83 mThird Floor And Fourth Floor Flat 82 Harley Street London W1G 7HB
- 84 m41-47, Portland Place W1Grade II*
- 91 m14-18, DEVONSHIRE STREET W1 (See details for further address information)Grade II
- 95 m69, Portland Place W1Grade II
- 97 m83 and 85, Harley Street W1Grade II*
- 100 m78, Harley StreetGrade II*
- 106 m115a, Harley Street W1Grade II
- 111 m12, Devonshire Street W1Grade II
- 112 m79 and 81, Harley Street W1Grade II
- 114 m8-13, Upper Wimpole Street W1Grade II
- 114 m1-6, Upper Wimpole Street W1Grade II
- 114 m120 and 122, Harley Street W1Grade II
- 116 m7, Upper Wimpole Street W1Grade II
- 118 m121, Harley Street W1Grade II*
- 124 mThe JackalopeGrade II
- 131 m77, Harley Street W1Grade II*
- 131 m42 and 43, Wimpole Street W1Grade II
- 136 m75, Portland Place W1Grade II*
- 138 mStatue of Sir George Stuart White in Centre of Road South of Weymouth Street CrossingGrade II
- 138 m126-150, Harley Street W1Grade II
- 141 m75, Harley Street W1Grade II*
- 141 m127-131, Harley Street W1Grade II
- 143 m27-35 Portland PlaceGrade II*
- 144 m61 and 63, New Cavendish Street W1Grade II*
- 144 mThe Royal Institute of British ArchitectsGrade II*
- 146 m39, Wimpole Street W1Grade II
- 147 m6-12, DEVONSHIRE PLACE W1 (See details for further address information)Grade II
- 148 m73 Harley StreetGrade II
- 149 m64 and 66, Harley 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.
Sales history 1
Last sold for £3,600,000 in February 2025. Terraced house, leasehold.
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 September 2021, 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 7BA
- Received
- 21 Nov 2025
- Validated
- 7 Jan 2026
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 2 Jul 2026
- Decision
- Application Permitted
- Decision date
- 2 Jul 2026
- Decision level
- Complex Delegated Decision
- Applicant
- Show
- Agent
- hgh Consulting
How this decision compares
Decided in 176 days from validation, 121 days slower than Westminster's median of 55 for extensions. Approved, as 88% of extensions here are.
Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
67% object · below the UK average of 74%
75 neighbours consulted · Last counted 23 Sept 2026
Consultation & key dates
- Alt. reference
- PP-14479559
- Planning Portal ref
- PP-14479559
- Comments by
- 11 Mar 2026
- Site or press notice
- 11 Feb 2026
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
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.
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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8 Devonshire Close London W1G 7BA
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