25/08056/LBCPlanning Application 25/08056/LBC
Heritage application at 21 Upper Montagu Street London W1H 2PQ, Westminster. View planning documents, track the decision and get email alerts on updates.
Replacement of existing non-original single-glazed timber sash windows with new slimline double-glazed timber sash windows to match the original in appearance, detailing and materials. (Linked to 25/08055/FULL)
25/08056/LBC
21 Upper Montagu Street London W1H 2PQ
This is a heritage application for window replacement at 21 Upper Montagu Street London W1H 2PQ. Westminster has handled 2,686 applications of this type and approves 90% of them, typically deciding them in 64 days. It was submitted on 5 November 2025 and is still awaiting a decision. The site is in the Portman Estate conservation area, with 20 listed buildings nearby. There have been 6 other applications at this address. In the past year there have been 221 applications across Marylebone. We hold 686 applications in total for the W1H postcode area.
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Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Westminster