26/02096/FULLPlanning Application 26/02096/FULL
Full application at 8 - 10 Hallam Street London W1W 6JE, Westminster. View planning documents, track the decision and get email alerts on updates.
The erection of rear roof extension, rear first floor extension and external terraces, internal alterations to create level floorplates and associated adjustment of rear facade window positions, installation of a dormer window and multipane windows to 10 to match 12, refurbishment of all existing windows, installation of plant equipment and associated works.
26/02096/FULL
8 - 10 Hallam Street London W1W 6JE
This is a full planning application for a dormer extension at 8 - 10 Hallam Street London W1W 6JE. Westminster has handled 4,496 applications of this type and approves 84% of them, typically deciding them in 73 days. It was submitted on 30 March 2026 and is still awaiting a decision. The site is in the Harley Street conservation area, with 3 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 561 applications across West End. We hold 132 applications in total for the W1W postcode area.
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Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Westminster