Planning application
8 Bentinck Street London W1U 2BJ
Works: Extension
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Detailed information about the overall external envelope design of the new extension (detailed elevations and sections at 1:20) pursuant to condition 4 (A) of planning permission dated 17th September 2025 (RN:25/02408/LBC)
As published by the council, reference 26/03531/ADLBC
Application record
- Reference
- 26/03531/ADLBC
- Type
- Approval of Details (ADLBC)
- Status
- Pending
- Received
- 29 May 2026
- Validated
- 29 May 2026
- Ward
- Marylebone
- Postcode
- W1U 2BJ
Site history
Applications at this address on the Westminster register
This site has had 11 applications since 2025: 2 approved, 0 refused.
-
26/06525/ADFULL Decided
8 Bentinck Street London W1U 2BJ
Details of the design of new doors, external balustrades, railings and staircases pursuant to discharge of Condition 9 (b) and (c) of Full Planning Permission dated 17 June 2026 (RN: 25/08063/FULL).
-
26/06526/ADLBC Decided
8 Bentinck Street London W1U 2BJ
Details of detailed design of new doors, external balustrades, railings and staircases pursuant to part condition 4(b) and (c) of listed building consent dated 17 June 2026 (RN: 25/08064/LBC)
-
26/04745/ADLBC Decided
8 Bentinck Street London W1U 2BJ
Details of external envelope design of new extension pursuant to Condition 4a of listed building consent dated 17 June 2026 (RN: 25/08064/LBC)
-
26/04758/ADFULL Decided
8 Bentinck Street London W1U 2BJ
Details of external envelope design of new extension pursuant to Condition 9a of planning permission dated 17 June 2026 (RN: 25/08063/FULL)
-
26/04437/ADFULL Decided
8 Bentinck Street London W1U 2BJ
Details of a sample panel of new brickwork pursuant to Condition 8 of planning permission dated 17th June 2026 (RN:25/08063/FULL). [Linked to 26/04438/ADLBC]
-
26/04438/ADLBC Awaiting decision
8 Bentinck Street London W1U 2BJ
Details of a sample panel of new brickwork pursuant to Condition 3 of listed building consent dated 17th June 2026 (RN: 25/08064/LBC). [Linked to 26/04437/ADFULL]
-
26/03525/ADFULL Awaiting decision
8 Bentinck Street London W1U 2BJ
Detailed information about the overall external envelope design of the new extension (detailed elevations and sections at 1:20) pursuant to condition 4 (A) of planning permission dated 17th September 2025 (RN:25/02407/FULL)
-
26/02892/ADFULL Awaiting decision
8 Bentinck Street London W1U 2BJ
Details of a sample panel of new brickwork pursuant to condition 8 of planning permission dated 17th September 2025 (RN:25/02407/FULL)
-
25/08063/FULL Granted
8 Bentinck Street London W1U 2BJ
Erection of rear extension from lower ground to 1st floor including new plant enclosure with associated plant, green roof and terraces spaces; repairs throughout including entrance steps, paving stones, stairs, plasterwork and floors; damp proofing to vaults and lower ground floor; fire works to doors and floors to improve compartmentalisation; internal configuration including removal of modern partitions to form new WC, tea points and shower room; insulation to roof and lower ground floor walls and floor; and new rooflights and CCTV. (Linked with 25/08064/LBC)
-
25/08064/LBC Granted
8 Bentinck Street London W1U 2BJ
Erection of rear extension from lower ground to 1st floor including new plant enclosure with associated plant, green roof and terraces spaces; repairs throughout including entrance steps, paving stones, stairs, plasterwork and floors; damp proofing to vaults and lower ground floor; fire works to doors and floors to improve compartmentalisation; internal configuration including removal of modern partitions to form new WC, tea points and shower room; insulation to roof and lower ground floor walls and floor; and new rooflights and CCTV. (Linked with 25/08063/FULL)
Timeline
Dates from the published record
-
29 May 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 24 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 91 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Howard de Walden Estate ltd Agent
27 applications on PlanIndex · 95% granted
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
7 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 84 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 0.3 miles
-
8 Bentinck Street London W1U 2BJ
88% historically approved · decision due ~24 Jul
Detailed information about the overall external envelope design of the new extension (detailed elevations and sections at 1:20) pursuant to condition 4 (A) of planning permission dated 17th September 2025 (RN:25/02407/FULL)
Awaiting decision Full applications Extension 7 docs -
8 Bentinck Street London W1U 2BJ
88% historically approved · decision due ~26 Jun
Details of a sample panel of new brickwork pursuant to condition 8 of planning permission dated 17th September 2025 (RN:25/02407/FULL)
Awaiting decision Full applications 2 docs -
8 Bentinck Street London W1U 2BJ
89% historically approved · decision due ~28 Aug
Details of a sample panel of new brickwork pursuant to Condition 8 of planning permission dated 17th June 2026 (RN:25/08063/FULL). [Linked to 26/04438/ADLBC]
Decided -
8 Bentinck Street London W1U 2BJ
89% historically approved · decision due ~18 Nov
Details of the design of new doors, external balustrades, railings and staircases pursuant to discharge of Condition 9 (b) and (c) of Full Planning Permission dated 17 June 2026 (RN: 25/08063/FULL).
Decided -
8 Bentinck Street London W1U 2BJ
89% historically approved · decision due ~10 Sep
Details of external envelope design of new extension pursuant to Condition 4a of listed building consent dated 17 June 2026 (RN: 25/08064/LBC)
Decided Extension -
8 Bentinck Street London W1U 2BJ
89% historically approved · decision due ~10 Sep
Details of external envelope design of new extension pursuant to Condition 9a of planning permission dated 17 June 2026 (RN: 25/08063/FULL)
Decided Extension
Other condition discharge and variation applications
In Westminster
-
26/02704/ADLBC Decided
New Zealand House 80 Haymarket London SW1Y 4TE
Details of new visible security fixtures in the Royal Opera Arcade pursuant to condition 7(f) of listed building consent dated 12th February 2021 (RN: 19/07816/LBC). Linked to 26/02618/ADFULL
-
26/04860/ADLBC Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Details of external and internal signage strategy pursuant to Condition 7(E) of listed building consent dated 12th February 2021 (RN: 19/07816/LBC)
-
26/04843/ADLBC Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Detailed design and specification of new blinds to NZH based on mock-up trials on-site pursuant to Condition 6(m) of listed building consent dated 12th February 2021 (19/07816/LBC).
-
26/04850/ADLBC Awaiting decision
17 Belgrave Square London SW1X 8PG
Detailed drawings of garage doors, roof lantern and any new lighting and flooring in the principal rooms pursuant to condition 6 (iii) (iv) (v) of listed building 18th August 2025 (RN:25/03417/LBC)
-
25/07120/ADLBC Granted
72 - 74 Lancaster Gate London W2 3NH
Details of new and altered doors and door architraves, including external faces of lifts (detailed elevations and sections at 1:10) pursuant to Condition 3 (A) of Listed Building Consent dated 14 December 2023 (RN: 23/00772/LBC) (Linked app: 25/07088/ADFULL)