23 Grafton Street London W1S 4EY Data via plota.co.uk
Proposal
Amendments to planning permission dated 17 June 2025 (RN: ) for Phased development including replacement of rear basement roof slab and creation of a rear extension at ground floor. Removal of rear ground floor toilet block and external fire escape stairs. Demolition of existing, altered mansard roof and construction of a new mansard roof with dormer windows and concealed plant enclosure. Extension of existing lift to serve fourth floor. Replacement of third floor rear windows with double glazed sash windows. Minor internal reconfigurations. Continued use of ground floor as retail (Use Class E(a)) and basement, first, second, third and fourth as office (Use Class E(g)). NAMELY, to retain ground floor rear door, retain existing floor slab and rear void, retain ground-floor landing stairs in existing arrangement, and amendment of Condition 11 to require details of waste and recycling to be submitted for approval prior to occupation. Data via plota.co.uk
Application progress
Approved on 21 Apr 2026 · Delegated Decision · Last checked 3 Aug 2026
Documents 18
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 11
Application forms 1
Associated applications 7
- AmendmentAmendments to planning permission dated 17 June 2025 (RN) for Phased development…This application26/00555/NMA
Show 5 more · 5 approved
Site constraints 12
Show the other 43 with distances
- 25 m3-6, GRAFTON STREET W1 (See details for further address information)Grade I
- 29 m28, Albemarle Street W1Grade II
- 37 m27, Dover Street W1Grade II
- 37 m29, Albemarle Street W1Grade II
- 45 m26, Dover Street W1Grade II
- 46 mThe Royal InstitutionGrade I
- 50 m22, Albemarle StreetGrade II
- 51 mPart of Royal InstitutionGrade I
- 53 m25, Dover Street W1Grade II
- 55 mNumbers 23 Albemarle Street and 16a, 16b and 16c Grafton StreetGrade II
- 57 m19, Albemarle Street W1Grade II
- 63 m7 and 7a, Grafton Street W1Grade II
- 63 m18, Albemarle Street W1Grade II
- 65 mAsprey'sGrade II
- 67 m170-174, New Bond Street W1Grade II
- 68 m17, Albemarle Street W1Grade II*
- 70 m16, Grafton Street W1Grade II
- 73 m175 and 176, New Bond Street W1Grade II
- 74 m16, Albemarle Street W1Grade II
- 75 m15a, Grafton Street W1Grade II
- 78 m179, New Bond Street W1Grade II
- 80 mShop Front to Wartski JewellersGrade II
- 81 m162 New Bond StreetGrade II
- 81 m3, Berkeley Square W1Grade II
- 81 m15, Albemarle Street W1Grade II
- 83 m2, Berkeley Square W1Grade II
- 83 m180, New Bond Street W1Grade II
- 86 m1, Berkeley Square W1Grade II
- 88 m25, Old Bond Street W1Grade II
- 94 m11, New Bond Street W1Grade II
- 105 mRoyal Arcade (Including Shops in Arcade and Albemarle Street Front)Grade II
- 110 mK6 Telephone KioskGrade II
- 113 mHorse and Rider SculptureGrade II
- 113 mOxford University PressGrade I
- 119 m24, OLD BOND STREET W1 (See details for further address information)Grade II
- 121 mTime and Life BuildingGrade II*
- 125 m23 and 23a, Old Bond Street W1Grade II
- 131 m22, Old Bond Street W1Grade II
- 135 m31, Old Bond Street W1Grade II
- 146 m19-20 Cork StreetGrade II
- 146 m1-72, BURLINGTON ARCADE W1 (See details for further address information)Grade II
- 146 m41 Albemarle Street, London W1Grade II
- 150 m9, Clifford 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.
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
- Non-material amendments
- Postcode
- W1S 4EY
- Received
- 30 Jan 2026
- Validated
- 30 Jan 2026
- Ward
- West End
- Case officer
- Show
- Target decision
- 27 Feb 2026
- Decision
- Application Permitted
- Decision date
- 21 Apr 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Montagu Evans
- Leaseholder
- Show
How this decision compares
Decided in 81 days from validation, 25 days slower than Westminster's median of 56 for commercial and major works. Approved, as 92% of commercial and major works here are.
Plota live figures for commercial and major works decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
Last counted 3 Aug 2026
Consultation & key dates
- Alt. reference
- PP-14549410
- Planning Portal ref
- PP-14549410
- Env. assessment
- No
Historical activity at this location
37 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
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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23 Grafton Street London W1S 4EY
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Council archive
23 Grafton Street London W1S 4EY
Phased development including replacement of rear basement roof slab and creation of a rear extension at ground floor. removal of rear ground floor toilet block and external fire escape stairs. Demolition of existing, altered mansard roof and construction of a new mansard roof with dormer windows and concealed plant enclosure. Extension of existing lift to serve fourth floor. Replacement of third floor rear windows with double glazed sash windows. Minor internal reconfigurations. Continued use of ground floor as…
- Received
- 10 Mar 2025
- Outcome
- Pending