Planning application
25/05992/LBC
39 Wilton Crescent London SW1X 8RX
Proposal
Erection of rooftop plant enclosure behind dummy mansard including new terrace with new stone paving; access stair with glazed access hatch; two flush walk-on rooflights; extension of mansard to front elevation to form parapet and conceal terrace; balustrade to rear elevation; raising of party wall to front of No. 40; replacement of all existing AV and satellite antennas; new security CCTV camera overlooking the access hatch.
As published by the council, reference 25/05992/LBC
Timeline
Dates from the published record
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22 Aug 2025
Received by Westminster
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8 Sep 2025
Validated
Checked as complete and ready for consideration.
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23 Oct 2025
Decision issued: Application Permitted
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21 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
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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25/05991/FULL Granted
39 Wilton Crescent London SW1X 8RX
Erection of rooftop plant enclosure behind dummy mansard including new terrace with new stone paving; access stair with glazed access hatch; two flush walk-on rooflights; extension of mansard to front elevation to form parapet and conceal terrace; balustrade to rear elevation; raising of party wall to front of No. 40; replacement of all existing AV and satellite antennas; new security CCTV camera overlooking the access hatch.
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25/09301/LBC Granted
39 Wilton Crescent London SW1X 8RX
Erection of closet wing from lower ground to third floor; demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level; erection of balcony and french doors at rear ground floor level; alterations at roof level in association with its use as a terrace; installation of plant equipment within enclosures at roof level and to rear; extension of lift to fourth floor; excavation of basement under rear courtyard, infill courtyard extension with terrace in association with use of building as single dwelling.
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25/05985/FULL Withdrawn
39 Wilton Crescent London SW1X 8RX
Erection of closet wing from lower ground to third floor; demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level; erection of balcony and French doors at rear ground floor level; alterations at roof level in association with its use as a terrace; installation of plant equipment within an enclosure at roof level and an MVHR unit in the rear courtyard; extension of existing lift to fourth floor; and excavation of basement under rear courtyard, infill courtyard extensionand works to front and rear elevations in association with use of building as single dwelling. (Linked with 25/05986/LBC)
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25/05986/LBC Withdrawn
39 Wilton Crescent London SW1X 8RX
Erection of closet wing from lower ground to third floor; demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level; erection of balcony and French doors at rear ground floor level; alterations at roof level in association with its use as a terrace; installation of plant equipment within an enclosure at roof level and an MVHR unit in the rear courtyard; extension of existing lift to fourth floor; and excavation of basement under rear courtyard, infill courtyard extension and works to front and rear elevations in association with use of building as single dwelling. (Linked with 25/05985/FULL)
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25/05926/LBC Granted
39 Wilton Crescent London SW1X 8RX
Erection of closet wing from lower-ground to third floor, reconstruction of existing rear two-storey extension at lower-ground and ground level, erection of balcony and French doors at rear ground level, basement extension, levelling of ground floor and raising of rear roof level, replacement of lower-ground concrete slab and associated damp proofing, alterations to services throughout, internal alterations associated with lift and associated refurbishment alterations.
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25/05984/FULL Granted
39 Wilton Crescent London SW1X 8RX
Variation of Condition 1 of planning permission dated 23 February 2016 (RN: 15/08955/FULL) for the: 'Erection of closet wing from lower ground to third floor to accommodate lift. Demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level. Erection of balcony and French doors at rear ground floor level. Alterations at roof level in association with its use as a terrace. Installation of plant equipment within an enclosure at roof level. Excavation of basement under rear courtyard'. Namely, retention of existing lift shaft, modifications to fenestration arrangement on rear, increase in height of two storey rear extension.
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)