Hermione House 61 Grosvenor Street London W1K 3JE Data via plota.co.uk
Proposal
Removal of stone stairs from the street down into the front lightwell; Removal of flagpole at first floor; replacement of single-glazed timber casement windows to front at fifth floor level with double glazed timber casement windows; New painted metal stairs from the street down into the front lightwell. Data via plota.co.uk
Application progress
Approved on 29 Aug 2025 · Delegated Decision · Last checked 20 Oct 2026
Documents 16
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 2
Application forms 2
Consultation & comments 1
Other documents 8
Site constraints 11
Show all 39 with distances
- 11 m59, Grosvenor Street W1Grade II
- 29 m66, Grosvenor Street W1Grade II
- 31 m56 and 57, Grosvenor StreetGrade II
- 36 m21 and 22, Grosvenor Street W1Grade II
- 53 m16, Grosvenor Street W1Grade II
- 70 mBourdon HouseGrade II*
- 81 mST GEORGES BUILDINGS No.1-40Grade II
- 88 m73, Grosvenor Street W1Grade II
- 88 m25, Berkeley Square W1Grade II
- 90 m52, Grosvenor Street W1Grade II
- 91 mNumbers 6 to 10 (Even) and Attached RailingsGrade II
- 95 mClaridges Hotel and Attached Railings Claridges Hotel WingGrade II
- 96 m27 and 28, Berkeley Square W1Grade II
- 98 m10-38, Bourdon StreetGrade II
- 99 m74, Grosvenor Street W1Grade II
- 101 m33, Grosvenor Street W1Grade II
- 102 mBollard to East End of Grosvenor BuildingsGrade II
- 105 m51, Grosvenor Street W1Grade II
- 108 m12 and 14, Mount Row W1Grade II
- 108 m24, Berkeley Square W1Grade II
- 110 m36-40, Bruton PlaceGrade II
- 112 m34, Grosvenor Street W1Grade II*
- 113 m41 and 43, Brook Street (S Side)Grade II
- 117 m50, Grosvenor Street W1Grade II
- 122 m4, 5, 5a, 5b, 5c, Mount Street W1Grade II
- 128 m49, Grosvenor Street W1Grade II
- 129 m39 and 39a Brook Street and 22 Avery RowGrade II*
- 132 m27, Three Kings Yard W1Grade II
- 137 m11, Avery Row W1Grade II
- 137 m7-10, Avery Row W1Grade II
- 137 m6, Avery Row W1Grade II
- 137 m5, Avery Row W1Grade II
- 137 m4, Avery Row W1Grade II
- 138 m12-20, Avery Row W1Grade II
- 142 m13, Lancashire Court W1Grade II
- 146 m130, MOUNT STREET (See details for further address information)Grade II
- 149 m1, CARLOS PLACE W1 (See details for further address information)Grade II
- 149 m37, Brook Street W1Grade II
- 150 m12, Lancashire Court 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 March 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
- W1K 3JE
- Received
- 4 Jul 2025
- Validated
- 9 Jul 2025
- Ward
- West End
- Case officer
- Show
- Target decision
- 3 Sept 2025
- Decision
- Application Permitted
- Decision date
- 29 Aug 2025
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Studio JaM LLP
- Leaseholder
- Show
How this decision compares
Decided in 51 days from validation, 25 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
No public comments yet.
14 neighbours consulted · Last counted 20 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14140634
- Planning Portal ref
- PP-14140634
- Comments by
- 20 Aug 2025
- Site or press notice
- 18 Jul 2025
- 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.
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.
Leaseholders: 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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Hermione House 61 Grosvenor Street London W1K 3JE
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