Planning application
5 Eaton Place London SW1X 8BN
Works: Extension Demolition Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Confirmation that planning permission dated 22 March 2024 (23/08901/FULL) has been lawfully implemented by the carrying out of the following works: removal of the existing window and demolition of a section of the wall to the existing master bedroom to the south of the garden, removal of a door from the existing internal corridor to the east of the garden, and the excavation of the ground at the rear of the property in preparation for the provision of foundations and the installation of drainage infrastructure for the approved rear lower ground floor extension.
As published by the council, reference 26/01758/CLEUD
Application record
- Reference
- 26/01758/CLEUD
- Type
- Certificate of Lawfulness (existing)
- Status
- Pending
- Received
- 18 Mar 2026
- Validated
- 18 Mar 2026
- Ward
- Knightsbridge & Belgravia
- Postcode
- SW1X 8BN
Site history
Applications at this address on the Westminster register
This site has had 4 applications since 2025: 2 approved, 0 refused.
-
25/05844/ADLBC Granted
5 Eaton Place London SW1X 8BN
Details of a revised lower ground floor plan showing the areas where damp proofing works are proposed, including justification (i.e. moisture survey) and detailed section drawings showing the type proposed, pursuant to condition 13 of listed building consent dated 25th March 2025 (RN: 23/08902/LBC)
-
25/05846/ADFULL Granted
5 Eaton Place London SW1X 8BN
Detailed drawings of the doors to rear lower ground floor extension pursuant to Condition 4 (ii) of planning permission dated 22 March 2024 (RN: 23/08901/FULL).
-
25/05845/ADLBC Awaiting decision
5 Eaton Place London SW1X 8BN
Detailed drawings of doors to rear lower ground floor extension pursuant to part conditions 3 ii of listed building consent dated 25th March 2024 (RN 23/08902/LBC)
Timeline
Dates from the published record
-
18 Mar 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 13 May 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
Montagu Evans LLP Agent, registered in London
Active · incorporated 2005 · London
1,345 applications on PlanIndex · across 131 councils · 97% 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
12 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 lawful development applications in a median of 107 days. More in our guide to how long planning decisions take.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
5 Eaton Place London SW1X 8BN
Details of a revised lower ground floor plan showing the areas where damp proofing works are proposed, including justification (i.e. moisture survey) and detailed section drawings showing the type proposed, pursuant to condition 13 of listed building consent dated 25th March 2025 (RN: 23/08902/LBC)
Granted Conditions 10 docs -
5 Eaton Place London SW1X 8BN
Detailed drawings of the doors to rear lower ground floor extension pursuant to Condition 4 (ii) of planning permission dated 22 March 2024 (RN: 23/08901/FULL).
Granted Full applications Extension 10 docs -
5 Eaton Place London SW1X 8BN
89% historically approved · decision due ~13 Oct
Detailed drawings of doors to rear lower ground floor extension pursuant to part conditions 3 ii of listed building consent dated 25th March 2024 (RN 23/08902/LBC)
Awaiting decision Conditions Extension 7 docs -
1 Eaton Place London SW1X 8BN
Confirmation that the planning permission dated 31 May 2023 (RN: 23/01837/FULL) for the 'amalgamation of six self contained flats plus common parts to form a single family dwelling and rebuilding of the existing garage' was lawfully implemented prior to the expiration date and that it is lawful to complete the outstanding works.
Granted Lawful development New dwelling 10 docsDomestic -
34 Belgrave Mews South London SW1X 8BT
Details of a validation report pursuant to condition 5 (Phase 4) of planning permission dated 8th February 2024 (RN:23/08449/FULL).
Granted Full applications 10 docs -
1 - 3 Belgrave Mews South London SW1X 8BT
93% historically approved · decision due ~1 Apr
Amendments to planning permission dated 27 August 2024 (RN:24/03215/FULL) for demolition behind retained front facade and construction of replacement house including replacement rear extension and terrace at lower height with new shallow balcony at second floor level; replacement of the fenestration and the roof of the existing mansard to include inset PV panels and an enclosed plant deck; and reposition front door with shallower porch. namely, amendment to front door and garage door to the front elevation at ground floor level.
Awaiting decision Amendments Extension Loft or dormer +2 2 docsSmall domestic
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26/07290/CLEUD Awaiting decision
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Confirmation that digging of trench to contain part of foundations is lawful and that planning permission 23/03464/FULL dated 30 October 2023 commenced before expiry of the three year time period.