Planning application
15 Blackett Street SW15 1QG
Works: Extension Loft or dormer Windows or glazing 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 the erection of a single-storey ground floor rear/side extension and a full width mansard roof extension to the main rear roof slope with French doors and safety balustrade
As published by the council, reference 2026/0321
Application record
- Reference
- 2026/0321
- Type
- Householder
- Status
- FINAL DECISION
- Decision
- Approve with Conditions
- Received
- 23 Jan 2026
- Validated
- 3 Feb 2026
- Decided
- 19 Mar 2026
- Ward
- Thamesfield
- Decision by
- Delegated Standard
- Postcode
- SW15 1QG
Timeline
Dates from the published record
-
23 Jan 2026
Received by Wandsworth
-
3 Feb 2026
Validated
Checked as complete and ready for consideration.
-
19 Mar 2026
Decision issued: Approve with Conditions
-
10 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
10 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
-
15 Blackett Street SW15 1QG
Erection of a dormer extension to main rear roof slope and extension above two-storey rear addition.
Granted Lawful development Extension Loft or dormer 9 docs -
5 Blackett Street SW15 1QG
Alterations including erection of dormer roof extension to main rear roof and extension above two-storey back addition.
Granted Householder Extension Loft or dormer 10 docsDomestic -
22 A Hotham Road SW15 1QB
Erection of a roof extension to main rear roof and above part of rear two-storey addition.
Granted Full applications Extension 9 docs -
26 A Blackett Street SW15 1QG
Alterations including erection of a mansard roof extension the main roof with french doors and safety balustrade and erection of extension above part of two-storey rear addition.
Refused Full applications Extension Loft or dormer +1 8 docs -
11 A Borneo Street SW15 1QQ
Alterations including mansard extension to main rear roof slope with French doors and safety railing, raising the ridge by 150mm and extension above rear addition forming a roof terrace with 1.7m obscure glazed balustrade.
Granted Full applications Extension Loft or dormer +1 7 docs -
12 Hotham Road SW15 1QB
87% historically approved · decision due ~25 May
LOCATION: 12 Hotham Road, SW15 1QB PROPOSAL: Front Garden: T1 Lime - Crown reduce by up to 1.5m.
Awaiting decision Trees
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.