1 Chiltern Street London W1U 7PA Data via plota.co.uk
Proposal
Infill of arrow slit window in north gable; conversion of existing fanlight to louvres; modifications to doors; amalgamation of bedrooms 17 & 18; and function room to north-east corner of basement. (Linked with 26/05305/NMA) Data via plota.co.uk
Application progress
This application is under consideration - no decision has been issued yet.
Documents 16
Statements & assessments 2
Plans & drawings 11
Application forms 1
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Important details
- Council
- Westminster
- Application type
- Listed Building Consent Application
- Postcode
- W1U 7PA
- Received
- 12 Aug 2026
- Validated
- 12 Aug 2026
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 7 Oct 2026
- Applicant
- Show
- Agent
- Donald Insall Associates
Public comments
No public comments yet.
45 neighbours consulted · Last counted 22 Aug 2026
Consultation & key dates
- Alt. reference
- PP-15154216
- Press notice
- 26 Aug 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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1 Chiltern Street London W1U 7PA
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