Planning application
40 Sefton Street SW15 1LZ
Works: Extension Loft or dormer Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Alterations including erection of dormer roof extension to main rear roof and erection of single storey rear extension. Rooflights to front roofslope
As published by the council, reference 2025/4167
Application record
- Reference
- 2025/4167
- Type
- Householder
- Status
- FINAL DECISION
- Decision
- Approve with Conditions
- Received
- 18 Nov 2025
- Validated
- 27 Nov 2025
- Decided
- 4 Feb 2026
- Ward
- Thamesfield
- Decision by
- Delegated Standard
- Postcode
- SW15 1LZ
Timeline
Dates from the published record
-
18 Nov 2025
Received by Wandsworth
-
27 Nov 2025
Validated
Checked as complete and ready for consideration.
-
4 Feb 2026
Decision issued: Approve with Conditions
-
10 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
12 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 householder applications
How this application type works
Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.
Nearby applications
Within 500 metres
-
38 Sefton Street SW15 1LZ
Demolition of single storey ground floor outbuilding and replacement with single storey, ground floor rear extension.
Granted Householder Extension Demolition 7 docsSmall domestic -
-
17 Sefton Street SW15 1NA
Non-material amendment to planning permission dated 28/04/2025 ref 2025/0577 (Alterations including single storey rear extension and first floor extension with associated changes to fenestration) to allow works to the upper floor not being carried out, only ground floor works. Extension increased from 2m to 3m into back garden.
Refused Amendments Extension Windows or glazing 4 docsSmall domestic -
17 Sefton Street SW15 1NA
Alterations including erection of single-storey rear extension and first floor rear extension.
Granted Full applications Extension 5 docsSmall domestic -
9 Pentlow Street SW15 1LX
Use of a room as office for TfL private vehicle hire (online and telephone bookings only, no public access).
Withdrawn Lawful development -
5-7 Pentlow Street SW15 1LX
Erection of extension to main rear roof and above part of two-storey rear addition.
Granted Lawful development Extension 10 docs
Other householder applications
In Wandsworth
-
2026/0398 Granted
65 West Hill Road SW18 1LE
Erection of two, single-storey outbuildings (studio and garden/swimming pool room) ancillary to main house located in rear garden.
-
2025/4355 Granted
44 Endlesham Road SW12 8JL
Alterations including erection of side and rear roof extension to main rear roof and extension above part of two-storey back addition (with French doors and glazed safety screen). Installlation of solar panels to roof of extension.
-
2026/3027 Withdrawn
10 Gamlen Road SW15 1AB
Alterations including erection of a mansard extension (with French doors and safety railings) to the main rear roof, including raising the ridge by 100mm, installation of two rooflights to front roofslope, installation of a new pitched roof and patio doors to the existing single storey rear extension. Revisions to planning permission 2026/1990, to include reduction of rear extension rooflights from three to two; addition of one conservation rooflight to the front roof slope above the stairwell; and improvements to the front garden and boundary treatment, including a new brick boundary wall, planting, path and paving, cycle store, and external redecoration.
-
2026/3038 Withdrawn
43 Sistova Road SW12 9QR
Erection of 3m high timber boudary fence.
-
2026/3026 Withdrawn
6 Rockland Road SW15 2LN
Installation of UPVC double glazed sash windows.