Planning application
Sackville House 40 Piccadilly London W1J 0DR
Works: Extension Demolition
Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.
Proposal
Amendments to planning permission dated 6th March 2023 (RN 23/06009/FULL) for the Refurbishment and extensions comprising partial demolition of the existing structure; part-infilling the lightwell to the west at ground to second floor level with third floor rear terrace and core to all levels; part-4, part-1 storey extension; creation of plant enclosure, a pavilion enclosure and roof terrace to seventh floor level; new cycle parking facilities; and associated works, all to provide additional Class E floorspace. NAMELY, design amendments as part of permitted works.
As published by the council, reference 25/04092/NMA
Application record
- Reference
- 25/04092/NMA
- Type
- Non-material amendments
- Status
- Decided
- Decision
- Application Refused
- Received
- 17 Jun 2025
- Validated
- 17 Jun 2025
- Decided
- 9 Apr 2026
- Ward
- West End
- Decision by
- Delegated Decision
- Postcode
- W1J 0DR
Timeline
Dates from the published record
-
17 Jun 2025
Received by Westminster
-
9 Apr 2026
Decision issued: Application Refused
-
30 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, registered in London
184 applications on PlanIndex · across 16 councils · 89% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
30 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.
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Open the documentsWhat refusal means
The process from here
The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.
Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.
About amendments applications
How this application type works
An amendment application changes a permission that already exists. Non-material amendments cover small adjustments with no wider effect, while minor material amendments, usually made by varying a condition, allow modest design changes without a fresh application. Anything beyond that needs a new permission, so the scope here is deliberately narrow.
Nearby applications
Within 500 metres
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Sackville House 40 Piccadilly London W1J 0DR
Alterations to the external wall in the rear lightwell including the installation of separate integrated louvres and glazed screening though with the inclusion on Level 01 of a brick band between the glazing and mechanical louvres and including associated internal alterations, adjustment to the staircase risers at basement and ground floor levels, and alterations and inclusion of joinery within the reception area at ground floor level
Granted Heritage and listed buildings Windows or glazing 44 docs -
Sackville House 40 Piccadilly London W1J 0DR
87% historically approved · decision due ~23 Jan
Variation of Condition 1 of planning permission dated 06 March 2024 (RN: 23/06009/FULL) for, "Refurbishment and extensions comprising partial demolition of the existing structure; part-infilling the lightwell to the west at ground to second floor level with third floor rear terrace and core to all levels; part-4, part-1 storey extension; creation of plant enclosure, a pavilion enclosure and roof terrace to seventh floor level; new cycle parking facilities; and associated works, all to provide additional Class E floorspace"; NAMELY, design amendments to roof, domers, lift overun, entrance doors and pavement lights.
Awaiting decision Full applications Extension Demolition 6 docs -
Sackville House 40 Piccadilly London W1J 0DR
89% historically approved · decision due ~24 Sep
Details of facing materials pursuant to condition 5 (partial) of planning permission dated 29 April 2026 (RN: 25/08707/FULL)
Decided -
Sackville House 40 Piccadilly London W1J 0DR
89% historically approved · decision due ~5 Oct
Details of facing materials pursuant to condition 5 (partial) of planning permission dated 29 April 2026 (RN: 25/08707/FULL)
Decided -
Sackville House 40 Piccadilly London W1J 0DR
89% historically approved · decision due ~23 Sep
Details of facing materials pursuant to condition 3 (partial) of listed building consent dated 06 August 2025 (RN: 25/03918/LBC)
Decided -
Sackville House 40 Piccadilly London W1J 0DR
89% historically approved · decision due ~23 Sep
Details of facing materials pursuant to condition 3 (partial) of listed building consent dated 11 November 2024 (RN: 24/05566/LBC)
Decided
Other amendments applications
In Westminster
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26/05886/NMA Awaiting decision
10 Spring Gardens London SW1A 2BN
Amendments to planning permission dated 10th July 2025 (RN 25/00695/FULL) for the Use of part-ground, first, sixth, seventh and eighth floor levels as an Embassy (sui generis). Associated external alterations to the ground floor facade on Carlton House Terrace, and part ground floor to Piazza (Spring Gardens) frontage. External alterations to the doors. Installation of roof plant and security screens to the eighth floor. NAMELY, Addition of external attached building signage on West Elevation and South Elevation; Addition of two flagpoles on West Elevation; Addition of a parcel pass through, rather than fixed panel, to door on North Elevation; and omission of smoke vent and replacement with new paving to match existing paving.
-
26/05881/NMA Awaiting decision
50A Warlock Road London W9 3LW
Amendments to planning permission dated 11 August 2026 (RN: 26/04158/FULL) for the: Erection of a single-storey rear extension at lower ground floor level; replacement of existing rear window with a door at ground floor level and creation of terrace with associated railings/screening; and associated external alterations. NAMELY, revise the height of the rear elevation kitchen French doors.
-
26/05798/NMA Awaiting decision
3 Blenheim Road London NW8 0LU
Amendments to planning permission dated 18th January 2024 (RN:22/04886/FULL) for Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of single-storey extension to rear and three-storey extension to side; Formation of door to rear at lower ground floor level; Landscaping works; and associated external alterations. Namely, internal alterations and minor adjustment to rooflight position.
-
26/05670/NMA Awaiting decision
64 St James's Street London SW1A 1NF
Amendments to planning permission dated 2nd September 2021 (21/02158/FULL) for: Demolition of the existing mansard roof and removal of plant and escape stair; erection of new double mansard roof extension and rear extension for additional commercial floorspace (Use Class E); and installation of new escape stair, rear balconies, roof terrace and associated works namely, amendments to allow for the installation of a condenser unit within the rear lightwell.
-
26/05674/NMA Awaiting decision
52 Eaton Place London SW1X 8AL
Amendments to planning permission dated 25 September 2025 (25/05108/FULL) for: Alterations to rear extension at first floor level including creation of rear roof terrace at second floor level; replacement of first and second floor level front windows with double glazed timber sash windows; replacement of front door; reinstatement of period windows and doors namely, to allow replacement of second floor rear full height sash window with set of french doors.