Mimosa House 12 Princes Street London W1B 2LL Data via plota.co.uk
Proposal
Details of the pre-demolition audit in accordance with section 4.6 of the GLA's adopted Circular Economy Statement guidance shall be submitted to us and approved by us in writing; pursuant to condition 25(a) of planning permission dated 17th March 2026 (RN ) Data via plota.co.uk
Application progress
Refused on 6 Aug 2026 · Delegated Decision · Last checked 7 Aug 2026
Documents 7
Decision & officer reports 2
Application forms 1
Associated applications 3
Part of
Conditions 24, 25a refused
- ConditionsDetails of the pre-demolition audit in accordance with section 4.6 of the GLA's adopted…RefusedThis application26/03074/ADFULL
Show 1 more · 1 refused
Site constraints 10
Show all 22 with distances
- 6 m11, Princes Street W1Grade II
- 43 m5, Princes StreetGrade II
- 53 mCabmen's Shelter to North of Central GardenGrade II
- 56 m2 Lamp Standards in Middle of Road Between Junctions With John Princes Street and Hollies StreetGrade II
- 78 m16, Hanover Square W1Grade II
- 78 m249-259, Regent Street W1Grade II
- 81 m229-247, REGENT STREET W1 (See details for further address information)Grade II
- 89 m7, Hanover StreetGrade II
- 91 mWinged Figure, including plinth and applied letteringGrade II*
- 100 m261-271, REGENT STREET W1 (See details for further address information)Grade II
- 112 m20, Hanover SquareGrade II*
- 112 mStatue of William Pitt the Younger (on Axis at South End of Square Garden)Grade II
- 121 m21, Hanover Square W1Grade II
- 125 m250-270, REGENT STREET W1 (See details for further address information)Grade II
- 128 m15, Hanover StreetGrade II
- 138 mDickins and JonesGrade II
- 140 mThe Argyll Public HouseGrade II*
- 144 mOxford Circus Underground Station entrance on north-west corner of Argyll Street and Oxford StreetGrade II
- 145 mPeter RobinsonGrade II
- 146 m223-227, REGENT STREET W1 (See details for further address information)Grade II
- 148 m313, Oxford Street W1Grade II
- 148 m24, Hanover Square 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.
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Important details
- Council
- Westminster
- Application type
- Approval of Details (Full PP)
- Postcode
- W1B 2LL
- Received
- 11 May 2026
- Validated
- 11 May 2026
- Ward
- West End
- Case officer
- Show
- Target decision
- 6 Jul 2026
- Decision
- Application Refused
- Decision date
- 6 Aug 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Newmark
- Freehold owner
- Show
Public comments
No public comments yet.
Last counted 7 Aug 2026
Consultation & key dates
- Alt. reference
- PP-14894981
- Planning Portal ref
- PP-14894981
- Env. assessment
- No
Historical activity at this location
27 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
Freehold owner and 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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Mimosa House 12 Princes Street London W1B 2LL
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Council archive
Mimosa House 12 Princes Street London W1B 2LL
Partial demolition, retrofit and single storey sheer extension to the building fronting Princes Street; infilling and extension to rear to provide a part-6, part-7 storey building; installation of new plant equipment at basement and roof level; provision of a terrace landscaping at roof level; new cycle parking facilities in new part basement level; and associated works. Use of the building for restaurant / retail / office (Class E) on ground and lower ground floor and office (Class E) on upper floors
- Received
- 20 Sep 2024
- Outcome
- Pending