Planning application
6 Tonsley Hill SW18 1BB
Works: New dwelling Extension Loft or dormer
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Erection of a mansard extension to main rear roof slope to create a self contained 2 bed flat across second and roof level, internal remodelling of existing flats
As published by the council, reference 2025/4342
Application record
- Reference
- 2025/4342
- Type
- Application for Full Permission
- Status
- FINAL DECISION
- Decision
- Approve with Conditions
- Received
- 1 Dec 2025
- Validated
- 4 Dec 2025
- Decided
- 24 Mar 2026
- Ward
- Wandsworth Town
- Decision by
- Delegated Standard
- Postcode
- SW18 1BB
Timeline
Dates from the published record
-
1 Dec 2025
Received by Wandsworth
-
4 Dec 2025
Validated
Checked as complete and ready for consideration.
-
24 Mar 2026
Decision issued: Approve with Conditions
-
10 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
8 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.
Trade members open them from here.
Open the documentsWhat 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
-
Flat Ground Floor 6 Tonsley Hill SW18 1BB
Alterations including erection of a single storey rear/side extension.
Granted Householder Extension 5 docsSmall domestic -
160 East Hill SW18 2HF
Alterations including erection of mansard roof extension to main rear roof and insertion of rooflights to front roof slope.
Granted Householder Extension Loft or dormer 11 docsDomestic -
5 Tonsley Hill SW18 1BE
Alterations including erection of mansard roof extension to main rear roof (with French doors and safety railings) including raising the ridge by 300mm and extension above part of two-storey back addition. Erection of single-storey rear/side extension.
Granted Householder Extension Loft or dormer +1 12 docsSmall domestic -
5 Tonsley Hill SW18 1BE
Alterations including erection of a single storey rear/side extension.
Granted Householder Extension 12 docsSmall domestic -
5 Tonsley Hill SW18 1BE
Alterations including erection of a roof extension (with french doors and safety railing) to main rear roof, and extension above part of the two-storey back addition.
Granted Lawful development Extension Windows or glazing 15 docs -
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