cs:westminster:26/05485/LBCPlanning Application cs:westminster:26/05485/LBC
Planning application at 1 Chiltern Street London W1U 7PA, Westminster. View planning documents, track the decision and get email alerts on updates.
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)
26/05485/LBC
1 Chiltern Street London W1U 7PA
This is a planning application for window replacement at 1 Chiltern Street London W1U 7PA. Westminster has handled 18,781 applications of this type and approves 88% of them, typically deciding them in 56 days. It was submitted on 12 August 2026 and is still awaiting a decision. The site is in the Portman Estate conservation area, with 13 listed buildings nearby. There have been 6 other applications at this address. We hold 777 applications in total for the W1U postcode area.
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Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Westminster