9 Northumberland Place London W2 5BS Data via plota.co.uk
Proposal
Erection of a mansard roof extension and solar panels at no. 10 Northumberland Place with access onto roof terrace at No.9 [Site includes 9&10 Northumberland Place] Data via plota.co.uk
Application progress
Refused on 16 Jun 2026 · Delegated Decision · Last checked 28 Jul 2026
Documents 13
Decision & officer reports 2
Statements & assessments 3
Plans & drawings 2
Application forms 1
Consultation & comments 1
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W2 5BS
- Received
- 11 Mar 2026
- Validated
- 13 Mar 2026
- Ward
- Bayswater
- Case officer
- Show
- Target decision
- 8 May 2026
- Decision
- Application Refused
- Decision date
- 16 Jun 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Found Associates
Consultation & key dates
- Alt. reference
- PP-14760222
- Press notice
- 8 Apr 2026
- 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.
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9 Northumberland Place London W2 5BS
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