Planning application
2026/1518
Flat First Floor A 9 Thorndean Street SW18 4HE
Proposal
Erection of a rear mansard roof extension involving raising ridge 300mm, extension above two-storey rear addition and creation of roof terrace with 1.7m high obscured glazed balustrade
As published by the council, reference 2026/1518
Timeline
Dates from the published record
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22 Apr 2026
Received by Wandsworth
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1 May 2026
Validated
Checked as complete and ready for consideration.
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13 Jul 2026
Decision issued: Approve with Conditions
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25 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 full applications applications
How this application type works
A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.
Nearby applications
Within 500 metres
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2026/2636 Awaiting decision
Flat First Floor A 30 Thorndean Street SW18 4HE
Alterations including erection of mansard roof extension to main rear slope including raising existing ridge height by 300mm; erection of roof extension above part of two-storey back addition and formation of second floor rear roof terrace with 1.7m glazed safety surround.
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2026/2588 Withdrawn
38 A Trewint Street SW18 4HB
Formation of roof terrace above two-storey back addition with 1.7m high screen surround.
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2026/0960 Awaiting decision
5 A Quinton Street SW18 3QR
Variation of condition 2 (in accordance with approved drawings) pursuant to planning permission dated 04/06/2024 ref 2024/0668 (Alterations including erection of mansard roof extension to main rear roof; erection of roof extension and formation of roof terrace with 1.7m glass safety surround above two storey back addition. Installation of external staircase to rear elevation provide access to garden.) to allow design changes including roof and fenestration changes as follows: flat roof now flush, removal of windows to the dormer side wall, increase in the size of the roof terrace, front roof slope to include one skylight and two skylights on the flat roof, face of the primary dormer wing previously slanted, now straight, amendments to external staircase dimensions. [Further amended plans recieved]
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2026/1482 Granted
33 Skelbrook Street SW18 4EZ
Erection of extension above rear two-storey back addition
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2026/1650 Granted
33 Skelbrook Street SW18 4EZ
Alterations including erection of a rear roof dormer extension (with French doors and safety railings) including raising the ridge by 250mm.
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2026/1949 Granted
34 Skelbrook Street SW18 4EZ
Alterations including removal of existing windows and installation of a full length door and safety railing to the main rear roof extension; Erection of an extension above part of the two-storey back addition; Erection of a single storey rear and side extension.
Other full applications applications
In Wandsworth
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2026/2766 Awaiting decision
Flat Ground Floor A 7 Chelverton Road SW15 1RN
Proposed ground floor side infill, internal alterations, floor plan redesign and all associated works.
-
2026/2771 Awaiting decision
45 Eastwood Street London Wandsworth SW16 6PT
Conversion of a single dwellinghouse into 2 self-contained flats, including the erection of a single-storey rear extension.
-
2026/2770 Awaiting decision
30-38 Manville Road SW17 8JN
Windows reneval, redecorations and associated works.
-
2026/2765 Awaiting decision
2 A Rostella Road London Wandsworth SW17 0HY
Loft extension and roof terrace over part of rear outrigger
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2026/2782 Awaiting decision
70 Barmouth Road London Wandsworth SW18 2DR
Installation of trellis on boundary wall