27 - 35 Mortimer Street London W1T 3BL Data via plota.co.uk
Proposal
Erection of plant equipment at rear fifth floor roof level including air cooled air conditioning equipment; two condenser units and a dry air cooler within an acoustic enclosure. Data via plota.co.uk
Application progress
Approved on 16 Oct 2025 · Delegated Decision · Last checked 1 Nov 2026
Documents 17
Decision & officer reports 2
Statements & assessments 2
Plans & drawings 6
Application forms 1
Consultation & comments 1
Other documents 5
Site constraints 10
Show all 18 with distances
- 28 m10, Mortimer Street W1Grade II
- 36 m26, Nassau Street W1Grade II
- 54 m23, Nassau Street W1Grade II
- 68 mSanderson Hotel (formerly Sanderson House)Grade II*
- 75 m20, Nassau Street W1Grade II
- 80 mMiddlesex Hospital ChapelGrade II*
- 86 mAll Saints Church and Numbers 7 and 8: All Saints Church House and Vestry, Including Railings to Basement Area and Attached Pair of Lamp StandardsGrade I
- 97 m34-38, Mortimer StreetGrade II
- 101 mSt Margaret's HouseGrade II
- 114 m84, Margaret Street W1Grade II*
- 119 mAudley HouseGrade II
- 134 m59 and 61, Riding House Street W1Grade II*
- 137 mConvent Chapel to Rear of Numbers 82 and 83 (All Saints House)Grade II
- 140 mBelmont HouseGrade II
- 141 m42 AND 44, MORTIMER STREET W1 (See details for further address information)Grade II
- 142 m37, Foley Street W1Grade II
- 145 mTower HouseGrade II
- 148 mNumber 16 and Attached RailingsGrade 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.
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W1T 3BL
- Received
- 21 Aug 2025
- Validated
- 21 Aug 2025
- Ward
- West End
- Case officer
- Show
- Target decision
- 16 Oct 2025
- Decision
- Application Permitted
- Decision date
- 16 Oct 2025
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Planning Potential Ltd.
How this decision compares
Decided in 56 days from validation, 20 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.
32 neighbours consulted · Last counted 1 Nov 2026
Consultation & key dates
- Alt. reference
- PP-14141939
- Planning Portal ref
- PP-14141939
- Comments by
- 15 Oct 2025
- Site or press notice
- 12 Sept 2025
- Env. assessment
- No
Historical activity at this location
29 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.
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27 - 35 Mortimer Street London W1T 3BL
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