Planning application
56 South Eaton Place London SW1W 9JJ
Works: Loft or dormer Roofing Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Alterations to front façade, including replacement windows and replacement of garage door with window; Excavation to enlarge basement, including creation of front lightwell with new external staircase and rear garden rooflights; Alterations to rear, including raising height of rear addition, replacement windows/ terrace door and replacement first floor balustrade; Alterations at roof level, including replacement roof.
As published by the council, reference 25/08805/FULL
Application record
- Reference
- 25/08805/FULL
- Type
- Full Planning Permission Application
- Status
- Pending
- Received
- 3 Dec 2025
- Validated
- 3 Dec 2025
- Ward
- Knightsbridge & Belgravia
- Postcode
- SW1W 9JJ
Timeline
Dates from the published record
-
3 Dec 2025
Received by Westminster
-
20 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 28 January 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.
Who's behind it
Company information only, from the register and Companies House
Cotti Trolese Architects Agent, an architecture practice registered in Hove
Active · incorporated 2023 · Hove
2 applications on PlanIndex
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See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
53 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 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
-
54 South Eaton Place London SW1W 9JJ
87% historically approved · decision due ~30 Oct
Installation of an air-source heat pump within louvred enclosure at main roof level.
Awaiting decision Full applications 24 docs -
101 Eaton Terrace London SW1W 8TW
87% historically approved · decision due ~27 May
Variation of condition 1 of planning permission dated 6th August 2025 (RN:25/02054/FULL) for the Erection of a rear extension to the lower ground floor (replacing the existing non-original conservatory), including internal reconfiguration and the addition of an external staircase to the existing front light well. Namely, alterations to rear door, replacement of non-original conservatory roof, increase in rooflight dimensions and missing coping stones.
Awaiting decision Full applications Extension Loft or dormer 27 docs -
101 Eaton Terrace London SW1W 8TW
87% historically approved · decision due ~8 Jul
Installation of two new condensers to the rear elevation. (Linked to 25/09278/LBC)
Awaiting decision Full applications 36 docs -
101 Eaton Terrace London SW1W 8TW
90% historically approved · decision due ~8 Jul
Installation of two new condensers to the rear elevation. (Linked to 25/09277/FULL)
Awaiting decision Heritage and listed buildings 28 docs -
101 Eaton Terrace London SW1W 8TW
Variation of condition 1 of planing permission dated 6 August 2025 (RN: 25/02054/FULL) for the: "Erection of a rear extension to the lower ground floor (replacing the existing non-original conservatory), including internal reconfiguration and the addition of an external staircase to the existing front light well". Namely, to allow lowering of window ground floor cill at Room 03; omit both rebuilding of the collapsed brick nib wall and installing of glass doors or full-height glass panel doors at the rear elevation (room 4); and associated works.
Granted Full applications Extension Windows or glazing 26 docs -
54 South Eaton Place London SW1W 9JJ
89% historically approved · decision due ~1 Oct
Details of railings pursuant to condition 7 of planning permission dated 18 June 2025 (RN: 25/01733/FULL)
Decided
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