Planning application
24 Isis Street SW18 3QN
Works: Extension Loft or dormer
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Alterations including erection of hip-to-gable roof extension with rear mansard.
As published by the council, reference 2025/4067
Application record
- Reference
- 2025/4067
- Type
- Certificate of Lawfulness - Proposed
- Status
- FINAL DECISION
- Decision
- Approve No Conditions
- Received
- 10 Nov 2025
- Validated
- 13 Nov 2025
- Decided
- 5 Jan 2026
- Ward
- Wandsworth Common
- Decision by
- Delegated Standard
- Postcode
- SW18 3QN
Timeline
Dates from the published record
-
10 Nov 2025
Received by Wandsworth
-
13 Nov 2025
Validated
Checked as complete and ready for consideration.
-
5 Jan 2026
Decision issued: Approve No Conditions
-
10 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
7 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 lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
-
24 Isis Street SW18 3QN
Alterations including erection of roof extension above two storey back addition.
Granted Householder Extension 6 docsDomestic -
54 Isis Street SW18 3QN
89% historically approved · decision due ~22 Oct
Alterations including erection of single storey rear side infill extension.
Awaiting decision ExtensionSmall domestic -
13 A Isis Street SW18 3QL
Alterations including erection of a mansard roof extension to main rear roof with French doors and safety railings and extension above two storey back addition.
Granted Full applications Extension Loft or dormer +1 14 docs -
4 Isis Street SW18 3QN
Alterations including erection of single storey rear and side infill extension.
Granted Householder Extension 7 docsSmall domestic -
42 A Isis Street SW18 3QN
Alterations including erection of an extension above the two storey back addition; Installation of rear access staircase and associated platform and entrance door at first floor.
Granted Full applications Extension 7 docs -
26 A Quinton Street SW18 3QS
Alterations including erection of mansard roof extension to main rear roof including raising the ridge by 200mm and extension above part of two-storey back addition
Granted Full applications Extension Loft or dormer 21 docs
Other lawful development applications
In Wandsworth
-
2026/3093 Awaiting decision
208 Franciscan Road SW17 8HG
Lawful development for loft conversion.
-
2026/3014 Withdrawn
1 St Hildas Close SW17 7UL
Installation of new wooden fence and gate to front of property.
-
2026/3006 Awaiting decision
137 Tooting Bec Road SW17 8BW
Erection of a dormer extension to main rear roof slope.
-
2026/2965 Awaiting decision
10 Kenilford Road SW12 9PR
Alterations including erection of mansard roof extension to main rear roof (with French doors and safety railings) including raising the ridge by 700mm and extension above two-storey back addition.
-
2026/2857 Withdrawn
11 Brookwood Road SW18 5BL
Erection of timber framed pergola in rear garden.