Planning application
Flat D 86 Eaton Square London SW1W 9AG
Works: New dwelling Several homes
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Subdivision of single flat into three flats and installation of rooftop AC condenser.
As published by the council, reference 25/08586/FULL
Application record
- Reference
- 25/08586/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 24 Nov 2025
- Validated
- 24 Nov 2025
- Decided
- 22 May 2026
- Ward
- Knightsbridge & Belgravia
- Decision by
- Delegated Decision
- Postcode
- SW1W 9AG
Site history
Applications at this address on the Westminster register
This site has had 3 applications since 2025: 2 approved, 0 refused.
-
26/04271/ADFULL Decided
Flat D 86 Eaton Square London SW1W 9AG
Details of residential parking mitigation measures pursuant to condition 8 of planning permission dated 22 May 2026 (RN: 25/08586/FULL).
-
25/08587/LBC Granted
Flat D 86 Eaton Square London SW1W 9AG
Subdivision of single flat into three flats and installation of rooftop AC condenser.
Timeline
Dates from the published record
-
24 Nov 2025
Received by Westminster
-
22 May 2026
Decision issued: Application Permitted
-
4 Aug 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
1 later application on the register refers to this one:
-
26/04271/ADFULL Decided
Flat D 86 Eaton Square London SW1W 9AG
Details of residential parking mitigation measures pursuant to condition 8 of planning permission dated 22 May 2026 (RN: 25/08586/FULL).
Who's behind it
Company information only, from the register and Companies House
ROSS ALEXANDER LAMBIE ARCHITECTS LTD Agent, an architecture practice registered in London
Active · incorporated 2021 · London
3 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
40 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 this grant of permission means
Westminster granted permission on 22 May 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
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
-
Flat D 86 Eaton Square London SW1W 9AG
Subdivision of single flat into three flats and installation of rooftop AC condenser.
Granted Heritage and listed buildings New dwelling 33 docsSeveral homes -
First Floor And Second Floor Flat 84 Eaton Square London SW1W 9AG
88% historically approved · decision due ~9 Apr
Installation of new timber framed slimline double glazed sash windows in place of modern units; and retention of historic window frames with replacement slimline double glazing. (Linked to 25/09171/LBC)
Awaiting decision Full applications Windows or glazing 24 docs -
85 - 88 Eaton Square London SW1W 9AG
100% historically approved · decision due ~26 Nov
T1 - Silver birch - prune away from building to allow 1.5 meters clearance for the erection of scaffolding T2 - Magnolia - prune away from building to allow 1.5 meters clearance for the erection of scaffolding
Awaiting decision Trees -
Flat D 86 Eaton Square London SW1W 9AG
89% historically approved · decision due ~24 Aug
Details of residential parking mitigation measures pursuant to condition 8 of planning permission dated 22 May 2026 (RN: 25/08586/FULL).
Decided 4 docs -
First Floor And Second Floor Flat 84 Eaton Square London SW1W 9AG
89% historically approved · decision due ~29 Oct
Details of the new French doors pursuant to condition 4 of planning permission dated 2nd April 2026 (26/00883/FULL)
Decided Windows or glazing -
First Floor And Second Floor Flat 84 Eaton Square London SW1W 9AG
89% historically approved · decision due ~28 Oct
Details of new French doors showing traditional joinery pursuant to condition 4 of Listed Building Consent dated 2 April 2026 (25/09171/LBC)
Decided Windows or glazing
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26/06134/FULL Decided
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Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.
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