Planning application
Flat 1 109 Eaton Square London SW1W 9AA
Works: Extension Demolition Windows or glazing
Relates to 26/05890/FULL
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
External and internal works, including replacement of existing vault doors with acoustic louvred doors associated with plant, replacement of existing security grilles to LGF front windows, demolition and rebuilding of existing closet wing infill extension at GF rear, replacement of external doors and windows and blocking up window opening to side of closet wing at GF level, opening up works for the purposes of investigation, demolition of and installation of partitions and suspended ceilings, replacement of internal doors, replacement of existing staircase, reinstatement and replacement of internal architectural features, installation of lighting, installation of new service routes associated with the plant and MEP and structural works. (Linked with 26/05890/FULL)
As published by the council, reference 26/05891/LBC
Application record
- Reference
- 26/05891/LBC
- Category
- Heritage and listed buildings
- Status
- Pending
- Received
- 27 Aug 2026
- Validated
- 24 Sep 2026
- Ward
- Knightsbridge & Belgravia
- Postcode
- SW1W 9AA
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2026.
-
26/05890/FULL Awaiting decision
Flat 1 109 Eaton Square London SW1W 9AA
Replace existing vault doors with acoustic louvred doors associated with plant, replace existing security grilles to LGF front windows, demolish and rebuild existing closet wing infill extension to GF rear, replace external doors and windows and block up window opening to side of closet wing at GF level. (Linked with 26/05891/LBC)
Timeline
Dates from the published record
-
27 Aug 2026
Received by Westminster
-
4 Sep 2026
Added to PlanIndex
-
24 Sep 2026
Validated
Checked as complete and ready for consideration.
-
Decision
Awaiting decision
Decision expected by 19 November 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 86 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
-
26/05890/FULL Awaiting decision
Flat 1 109 Eaton Square London SW1W 9AA
Replace existing vault doors with acoustic louvred doors associated with plant, replace existing security grilles to LGF front windows, demolish and rebuild existing closet wing infill extension to GF rear, replace external doors and windows and block up window opening to side of closet wing at GF level. (Linked with 26/05891/LBC)
1 later application on the register refers to this one:
-
26/05890/FULL Awaiting decision
Flat 1 109 Eaton Square London SW1W 9AA
Replace existing vault doors with acoustic louvred doors associated with plant, replace existing security grilles to LGF front windows, demolish and rebuild existing closet wing infill extension to GF rear, replace external doors and windows and block up window opening to side of closet wing at GF level. (Linked with 26/05891/LBC)
Documents
Plans, drawings, consultee responses and the officer's report
1 document 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 heritage and listed building applications in a median of 119 days. More in our guide to how long planning decisions take.
About heritage and listed building applications
Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
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105 Eaton Square London SW1W 9AA
88% historically approved · decision due ~18 Nov
Removal of brick pier between two garage openings and introduction of new fanlights on rear elevation (105 Eccleston Mews) (Linked to 26/06567/LBC)
Awaiting decision Full applications -
105 Eaton Square London SW1W 9AA
90% historically approved · decision due ~18 Nov
Removal of brick pier between two garage openings and introduction of new fanlights on rear elevation (105 Eccleston Mews) (LInked to 26/06566/FULL)
Awaiting decision Heritage and listed buildings -
Flat 1 109 Eaton Square London SW1W 9AA
88% historically approved · decision due ~19 Nov
Replace existing vault doors with acoustic louvred doors associated with plant, replace existing security grilles to LGF front windows, demolish and rebuild existing closet wing infill extension to GF rear, replace external doors and windows and block up window opening to side of closet wing at GF level. (Linked with 26/05891/LBC)
Awaiting decision Full applications Extension Demolition +1 1 doc -
First Floor And Second Floor Maisonette 114 Eaton Square London SW1W 9AA
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Decided Heritage and listed buildings 1 doc -
113 Eaton Square London SW1W 9AA
93% historically approved · decision due ~9 Jun
Amendments to planning permission dated 6th November 2025 (RN 25/06283/FULL) for the External alterations including infill of the rear lightwell at lower ground floor level, addition of rooflights, replacement windows and doors including replacing garage doors and use of the garage as habitable space at 113 Eccleston Mews. NAMELY, Front windows of mews house changed from casement to timber, double glazed sash windows.
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Granted Full applications Loft or dormer Windows or glazing 16 docs
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