Planning application
8 - 10 Hallam Street London W1W 6JE
Works: Extension Loft or dormer Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
The erection of residential rear roof extension, rear first floor extension and external terraces, adjustment of rear facade window positions, installation of a dormer window and multipane windows to No.10 to match No.12, refurbishment of all existing windows, installation of plant equipment and associated works.
As published by the council, reference 26/04972/FULL
Application record
- Reference
- 26/04972/FULL
- Category
- Full applications
- Status
- Pending
- Received
- 24 Jul 2026
- Validated
- 24 Jul 2026
- Postcode
- W1W 6JE
Site history
Applications at this address on the Westminster register
This site has had 3 applications since 2026.
-
26/04929/P3JPA Awaiting decision
8 - 10 Hallam Street London W1W 6JE
Application for Prior Approval under Class MA, Part 3 of Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the conversion of the existing office accommodation (Class E) to provide 6 residential dwellings.
-
26/02096/FULL Awaiting decision
8 - 10 Hallam Street London W1W 6JE
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.
Timeline
Dates from the published record
-
24 Jul 2026
Received by Westminster
-
1 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 18 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 66 days over the applications it decided in the last year.
What happens while it is decided
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 91 days. More in our guide to how long planning decisions take.
About full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
8 - 10 Hallam Street London W1W 6JE
89% historically approved · decision due ~17 Sep
Application for Prior Approval under Class MA, Part 3 of Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the conversion of the existing office accommodation (Class E) to provide 6 residential dwellings.
Awaiting decision -
8 - 10 Hallam Street London W1W 6JE
87% historically approved · decision due ~25 May
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.
Awaiting decision Full applications Extension Loft or dormer +1 62 docs -
14 Hallam Street London W1W 6JG
Display for a temporary period of six months of a non-illuminated estate agent board located on the railings infront of the building, measuring 0.45m x 0.6m.
Granted Advertising 9 docs -
111 - 113 Great Portland Street London W1W 6QG
Display for a temporary period of six months of a non-illuminated 'to let' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.
Granted Advertising 2 docs -
111 - 113 Great Portland Street London W1W 6QG
Display of non-illuminated estate agent board measuring 1200mm x 900mm to be attached to the building at a height of between 3m and 4.6m from pavement level for a temporary period of six months.
Granted Advertising 2 docs -
111 - 113 Great Portland Street London W1W 6QG
Display of non-illuminated estate agent board measuring 1200mm x 900mm to be attached to the building at a height of between 3m and 4.6m from pavement level for a temporary period of six months.
Granted Advertising 4 docs
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