Planning application
11 Chesterfield Street London W1J 5JN
Works: Extension
Relates to 25/09330/LBC, 26/03679/ADFULL
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Details of amended plans and elevations to show the new extension at rear ground floor level more closely integrated with the architectural character and design of the building pursuant to condition 6 of listed building consent dated 01 June 2026 (RN: 25/09330/LBC) [Linked to 26/03679/ADFULL]
As published by the council, reference 26/03731/ADLBC
Application record
- Reference
- 26/03731/ADLBC
- Type
- Approval of Details (ADLBC)
- Status
- Pending
- Received
- 5 Jun 2026
- Validated
- 5 Jun 2026
- Ward
- West End
- Postcode
- W1J 5JN
Site history
Applications at this address on the Westminster register
This site has had 5 applications since 2025: 2 approved, 0 refused.
-
26/03679/ADFULL Awaiting decision
11 Chesterfield Street London W1J 5JN
Details of amended plans and elevations to show the new extension at rear ground floor level more closely integrated with the architectural character and design of the building pursuant to condition 7 of planning permission dated 01 June 2026 (RN: 25/09329/FULL) [Linked to 26/03731/ADLBC]
-
26/02482/LBC Awaiting decision
11 Chesterfield Street London W1J 5JN
Removal and replacement of existing stair case from Lower Ground floor to Fifth Floor.
-
25/09329/FULL Granted
11 Chesterfield Street London W1J 5JN
Rear extension at ground and lower ground floor, rear outrigger extension from ground to second floor, roof alterations and internal alterations and new plant. [Linked to 25/09330/LBC]
-
25/09330/LBC Granted
11 Chesterfield Street London W1J 5JN
Rear extension at ground and lower ground floor, rear outrigger extension from ground to second floor, roof alterations and internal alterations and new plant. [Linked to 25/09329/FULL]
Timeline
Dates from the published record
-
5 Jun 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 31 July 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 65 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
-
25/09330/LBC Granted
11 Chesterfield Street London W1J 5JN
Rear extension at ground and lower ground floor, rear outrigger extension from ground to second floor, roof alterations and internal alterations and new plant. [Linked to 25/09329/FULL]
-
26/03679/ADFULL Awaiting decision
11 Chesterfield Street London W1J 5JN
Details of amended plans and elevations to show the new extension at rear ground floor level more closely integrated with the architectural character and design of the building pursuant to condition 7 of planning permission dated 01 June 2026 (RN: 25/09329/FULL) [Linked to 26/03731/ADLBC]
Who's behind it
Company information only, from the register and Companies House
Holloway and Holloway Architects Agent, an architecture practice registered in Maidenhead
Active · incorporated 2021 · Maidenhead
6 applications on PlanIndex · across 2 councils
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
8 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat 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 condition discharge and variation applications in a median of 42 days. More in our guide to how long planning decisions take.
About condition discharge and variation applications
This application deals with conditions on an existing permission, supplying the details a condition requires or asking to vary or remove one, without reopening the permission itself. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
12 Chesterfield Street London W1J 5JN
Drawings and details pursuant to condition 8 (extent of demolition and associated works to main roof level) of planning permission dated 21st October 2024 (RN: 24/04554/FULL)
Granted Full applications Demolition 41 docs -
11 Chesterfield Street London W1J 5JN
90% historically approved · decision due ~10 Jun
Removal and replacement of existing stair case from Lower Ground floor to Fifth Floor.
Awaiting decision Heritage and listed buildings 4 docs -
15 Chesterfield Street London W1J 5JN
Display of non-illuminated projecting sign measuring 0.92m x 0.43m. (Linked with 25/05522/LBC)
Decided Advertising 13 docs -
15 Chesterfield Street London W1J 5JN
Installation of a projecting sign on Curzon Street elevation. (Linked with 25/05529/ADV)
Refused Heritage and listed buildings 18 docs -
11 Chesterfield Street London W1J 5JN
87% historically approved · decision due ~31 Jul
Details of amended plans and elevations to show the new extension at rear ground floor level more closely integrated with the architectural character and design of the building pursuant to condition 7 of planning permission dated 01 June 2026 (RN: 25/09329/FULL) [Linked to 26/03731/ADLBC]
Awaiting decision Full applications Extension 8 docs -
12 Chesterfield Street London W1J 5JN
Drawings and details pursuant to condition 3 (extent of demolition and associated works to main roof level), 5 (details related to installation of internal insulation), 7 (works to internal timber joinery and plasterwork), 9 (details of internal staircase balustrading) & 10 (internal pipework in association with air conditioning equipment) of listed building consent dated 21st October 2024 (RN:24/04555/LBC)
Granted Conditions Demolition 41 docs
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