Planning application
25/07423/LBC
6 Eccleston Square London SW1V 1NP
Proposal
Full refurbishment of Flat 6 involving the demolition of the existing modern mansard roof and dormers at 4th level, and of the terrace above the 4th Floor and creation of a new roof with a sunk terrace, recessed from both elevations, in the middle section of the roof, insertion of a hinged sky door fit in the roof and creation of an internal stair for accessing the roof terrace, layout improvement of the 4th floor with minor alterations of the bedrooms configuration and the enlargement of existing bathroom, with the provision of a skylight about the bath/ shower area, vertical extension of the existing cantilevered rear extension, with the creation of a new rear extension volume above, partially covering the existing rear extension, housing a shower area and improvement of existing WC on the landing in between the 3rd and 4th floors; layout optimization of the 3rd floor and renewal of the existing modern double-glazing windows with new like to like timber, slim line double glazed conservation windows and installation of ASHP heat pump. (Linked to 25/07422/FULL)
As published by the council, reference 25/07423/LBC
Timeline
Dates from the published record
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14 Oct 2025
Received by Westminster
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30 Oct 2025
Validated
Checked as complete and ready for consideration.
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21 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Westminster for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
About heritage and listed buildings applications
How this application type works
Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.
More on heritage and listed buildings applications in our guide
Nearby applications
Within 500 metres
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25/07422/FULL Awaiting decision
6 Eccleston Square London SW1V 1NP
Full refurbishment of Flat 6 involving the demolition of the existing modern mansard roof and dormers at 4th level, and of the terrace above the 4th Floor and creation of a new roof with a sunk terrace, recessed from both elevations, in the middle section of the roof, insertion of a hinged sky door fit in the roof and creation of an internal stair for accessing the roof terrace, layout improvement of the 4th floor with minor alterations of the bedrooms configuration and the enlargement of existing bathroom, with the provision of a skylight about the bath/ shower area, vertical extension of the existing cantilevered rear extension, with the creation of a new rear extension volume above, partially covering the existing rear extension, housing a shower area and improvement of existing WC on the landing in between the 3rd and 4th floors; layout optimization of the 3rd floor and renewal of the existing modern double-glazing windows with new like to like timber, slim line double glazed conservation windows and installation of ASHP heat pump. (Linked to 25/07423/LBC)
-
26/01575/LBC Awaiting decision
1D Eccleston Square London SW1V 1NP
Installation of four replacement timber sash windows within mansard roof storey.
-
26/02081/ADLBC Awaiting decision
9 Eccleston Square London SW1V 1NP
Details of stucco repair method statement pursuant to condition 4 of listed building consent dated 7th October 2025 (RN: 25/06030/LBC).
-
26/00686/LBC Awaiting decision
Flat 2 5 Eccleston Square London SW1V 1NP
Replacement of roof and rooflights to rear closet wing at first floor level with associated raising of existing parapet.
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26/00685/FULL Awaiting decision
Flat 2 5 Eccleston Square London SW1V 1NP
Replacement of roof and rooflights to rear closet wing at first floor level with associated raising of existing parapet.
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26/02019/FULL Awaiting decision
1D Eccleston Square London SW1V 1NP
Installation of four replacement timber sash windows within mansard roof storey.
Other heritage and listed buildings applications
In Westminster
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26/04984/LBC Awaiting decision
47G Randolph Avenue London W9 1BQ
Installation of replacement fire surround.
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26/04997/LBC Awaiting decision
Hanover Lodge Outer Circle Regent's Park London NW1 4HB
Erection of a morning room side extension. (Linked to 26/04996/FULL)
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26/04979/LBC Awaiting decision
12 Brewer Street London W1F 0SF
Internal alterations including removal of internal enclosures; Replacement flooring, shelving and slatwall systems, staircase handrail repair and other associated joinery works.
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26/04987/LBC Awaiting decision
Basement And Ground Floor 8 Ganton Street London W1F 7QL
Repainting of the existing timber shopfront, hand-painted fascia lettering, installation of a new hanging sign using the existing projecting sign bracket, and installation of a discreet fascia-mounted LED trough light.
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26/04995/LBC Awaiting decision
Hanover Lodge Outer Circle Regent's Park London NW1 4HB
Erection of rear conservatory extensions and an entrance loggia to side with roof terrace above, together with associated landscaping and alterations. (Linked with 26/04994/FULL)