50 Berkeley Street London W1J 8HA Data via plota.co.uk
Description
Amendments to planning permission dated 1st December 2021 (RN:) for Erection of two 2 storey infill extensions to the set-back corners at fifth floor level on the Berkeley Street/Mayfair Place elevation and Berkeley Street/Stratton Street elevation, the demolition of the existing mansard roof and its replacement with a single sheer storey (to match the lower floors) on the Mayfair Place elevation and Stratton Street elevation, erection of an additional set back floor at eighth floor level, plus roof top plant room. Associated external alterations, including to existing ground floor entrances, and alterations to the existing plant/ducts. Use of basement (part), ground (part) and 1st to 8th floor as offices (Class E). Namely, Alterations to balustrade height, amendments to foam inlets, small roof opening enclosure to north core top roof Data via plota.co.uk
Last checked
Decision outlook
Plota predicted a decision around 29 Oct 2026; it is now day 457.
Day 457, past the statutory target. 58% of full applications in Westminster are decided within thirteen weeks; extensions of time are common, and the council need not decide on the day. Last seen undecided on 16 Oct 2026.
Plota live figures for full applications decided by Westminster in the last twelve months, from validation. Westminster decision record →
Associated applications 3
Part of
- AmendmentAmendments to planning permission dated 1st December 2021 (RN)This application25/05290/NMA
Site constraints 13
Show all 29 with distances
- 22 mDevonshire HouseGrade II
- 59 m41 and 42, Dover Street W1Grade II
- 68 m8, Stratton Street W1Grade II
- 68 m6, Stratton Street W1Grade II
- 69 mStratton HouseGrade II
- 86 mOxford University PressGrade I
- 90 m15, Stratton Street W1Grade II
- 93 mThe Ritz HotelGrade II*
- 96 m11, Bolton Street W1Grade II
- 97 m14, Bolton Street W1Grade II
- 98 m10, Dover Street W1Grade II
- 98 mUnnamed
- 98 mPair of K6 Telephone Kiosks Adjacent to Western Corner of Ritz HotelGrade II
- 99 m13, Bolton Street W1Grade II
- 101 m15, Bolton Street W1Grade II
- 102 m16, Bolton Street W1Grade II
- 105 m17 and 18, Bolton Street W1Grade II
- 114 m19 and 20, Bolton Street W1Grade II
- 116 m45-46, Albemarle StreetGrade II
- 120 m49, Albemarle Street W1Grade II
- 120 mWimbourne HouseGrade II*
- 121 m47, Albemarle Street W1Grade II
- 123 m50, Albemarle Street W1Grade II*
- 125 m63 and 65, Piccadilly W1Grade II
- 128 m41 Albemarle Street, London W1Grade II
- 130 mThe Wolseley 157-160 Piccadilly including 1-3 Arlington StreetGrade II*
- 145 mPart of the Devonshire ClubGrade II
- 146 m49, ST JAMES'S STREET SW1 (See details for further address information)Grade II*
- 147 m21, Arlington Street Sw1Grade II*
Checked on 14 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 2018, the latest held for this property. The building may have changed since. View the certificate
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Historical activity at this location
33 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.
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.
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.
Leaseholders, on paid plans
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Council archive
50 Berkeley Street London W1J 8DJ
Erection of two 2 storey infill extensions to the set-back corners at fifth floor level on the Berkeley Street/Mayfair Place elevation and Berkeley Street/Stratton Street elevation, the demolition of the existing mansard roof and its replacement with a single sheer storey (to match the lower floors) on the Mayfair Place elevation and Stratton Street elevation, erection of an additional set back floor at eighth floor level, plus roof top plant room. Associated external alterations, including to existing ground…
- Received
- 29 Sep 2020
- Decided
- 26 Jul 2021
- Outcome
- Approved