Flat 45 2 Mansfield Street London W1G 9NF Data via plota.co.uk
Proposal
Erection of roof extension to the existing mansard roof with associated elevational alterations on the Duchess Street and rear elevation, alterations to the existing mansard roof on the Mansfield Street elevation including a new dormer window and the replacement of the existing external doors, two new rooflights at main roof level, installation of two external air conditioning (AC) condensers at main roof level, replacement of existing rooflights and windows, installation of new external cupboard at terrace level. (Linked with 26/02045/LBC) Data via plota.co.uk
Application progress
Approved on 25 Jun 2026 · Delegated Decision · Last checked 4 Aug 2026
Documents 26
Decision & officer reports 2
Statements & assessments 4
Plans & drawings 8
Application forms 1
Consultation & comments 3
Other documents 8
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W1G 9NF
- Received
- 27 Mar 2026
- Validated
- 27 Mar 2026
- Case officer
- Show
- Target decision
- 22 May 2026
- Decision
- Application Permitted
- Decision date
- 25 Jun 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Lucy Wood Architects
Public comments
59 neighbours consulted · Last counted 4 Aug 2026
Consultation & key dates
- Alt. reference
- PP-14738550
- Site notice
- 16 Apr 2026
- Env. assessment
- No
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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Flat 45 2 Mansfield Street London W1G 9NF
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