Flat 4b Block 4 Portman Mansions Chiltern Street London W1U 6NS Data via plota.co.uk
Proposal
Replacement of nine windows on the front and side elevation at lower ground floor level with like for like slimline double glazed windows. Data via plota.co.uk
Application progress
This application is under consideration - no decision has been issued yet.
Documents 15
Statements & assessments 2
Plans & drawings 5
Application forms 1
Consultation & comments 1
Other documents 6
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W1U 6NS
- Received
- 23 Mar 2026
- Validated
- 7 Apr 2026
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 2 Jun 2026
- Applicant
- Show
Consultation & key dates
- Alt. reference
- PP-14736742
- Press notice
- 22 Jul 2026
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
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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Flat 4b Block 4 Portman Mansions Chiltern Street London W1U 6NS
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