Planning application
171 Trentham Street SW18 5DH
Works: Extension
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Erection of an extension to the main rear roof, and an extension above the two-storey back addition.
As published by the council, reference 2026/1159
Application record
- Reference
- 2026/1159
- Type
- Certificate of Lawfulness - Proposed
- Status
- FINAL DECISION
- Decision
- Approve No Conditions
- Received
- 24 Mar 2026
- Validated
- 7 Apr 2026
- Decided
- 18 May 2026
- Ward
- Southfields
- Decision by
- Delegated Standard
- Postcode
- SW18 5DH
Site history
Applications at this address on the Wandsworth register
This site has had 2 applications since 2026: 2 approved, 0 refused.
-
2026/1158 Granted
171 Trentham Street SW18 5DH
Erection of a single storey rear and side extension.
Timeline
Dates from the published record
-
24 Mar 2026
Received by Wandsworth
-
7 Apr 2026
Validated
Checked as complete and ready for consideration.
-
18 May 2026
Decision issued: Approve No Conditions
-
10 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
6 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 this grant of permission means
Wandsworth granted permission on 18 May 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
171 Trentham Street SW18 5DH
Erection of a single storey rear and side extension.
Granted Householder Extension 6 docsSmall domestic -
168 Trentham Street SW18 5DJ
Prior approval for erection of single-storey rear extension to extend beyond the rear wall of the existing dwellinghouse by 4m, the total height of the proposed extension is 3.7m and the height of the eaves is 2.75m.
Granted Prior approval Extension 16 docsSmall domestic -
157 Astonville Street SW18 5AQ
Erection of single storey rear and side extension.
Granted Householder Extension 7 docsSmall domestic -
157 Astonville Street SW18 5AQ
Alterations including erection of roof extension to main rear roof and roof extension above two storey back addition.
Granted Lawful development Extension 8 docs -
Flat First Floor 153 Astonville Street SW18 5AQ
Alterations including erection of mansard roof extension to main rear roof (with French doors and safety railings) including raising the main roof ridge height by 250mm; erection of extension above part of two-storey back addition; formation of second floor rear roof terrace above part of back addition with 1.7m high screen surround.
Granted Full applications Extension Loft or dormer +2 14 docs -
74 Revelstoke Road SW18 5PB
Alterations including erection of a roof extension (with french doors and safety railing) to the main rear roof, erection of an extension above part of the two-storey back addition. (AMENDED DESCRIPTION)
Granted Full applications Extension Windows or glazing 7 docs
Other lawful development applications
In Wandsworth
-
2026/3093 Awaiting decision
208 Franciscan Road SW17 8HG
Lawful development for loft conversion.
-
2026/2857 Withdrawn
11 Brookwood Road SW18 5BL
Erection of timber framed pergola in rear garden.
-
2026/2842 Withdrawn
18 Bowman Mews SW18 5TN
Erection of a single-storey ground floor rear extension.
-
2026/2763 Withdrawn
47 Honeywell Road SW11 6EQ
Installation of solar PV equipment.
-
2026/2744 Withdrawn
249-253 Queenstown Road SW8 3NP
Installation of a freestanding tensile fabric canopy