20 Trinity Road SW17 7RE
Approved on 27 October 2026
Council decision: Approve with Conditions CIL Liable
Boundary © HM Land Registry, © Ordnance Survey · details
This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.
Proposal
Erection of a mansard roof extension with front and rear dormers; two-storey rear extension at first and second floor levels, extension to infill rear ground floor courtyard to provide a new communal entrance, stairs and alterations to ground floor Launderette (Sui generis). Redevelopment of existing first floor flat and creation of a 2-bedroom flat at roof level. Communal refuse and cycle storage at ground floor.
- Received
- 1 September 2026
- Council
- London Borough of Wandsworth
- ReceivedReceived1 Sep
- ValidatedValidated10 Sep
- Consult.Consultation
- TargetTarget Date27 Oct
- DecidedDecided27 Oct
Decided in 47 days (council typically 56)
About this application
This is an outline application for a two storey rear extension at 20 Trinity Road SW17 7RE. Wandsworth has handled 528 applications of this type. This one was decided in 56 days. The site is in 1 listed building nearby. There has been 1 other application at this address. We hold 1,578 applications in total for the SW17 postcode area.
86% of outline applications at London Borough of Wandsworth were approved. Across all application types, the council typically decides in about 8 weeks (median).
Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street
Application details
- Postcode
- SW17 7RE
- Application type
- Reserved Matters (following outline)
- Scale / size
- Small
Planning application dates
- Date validated
- 10 September 2026
- Target decision date
- 27 October 2026
- Application expires
- 27 October 2026
Planning decision
- Case officer
- Caitlin White
- Statutory period
- 56 days
Additional information
- Documents
- 9
Site constraints
Designations that overlap or adjoin the site outline.
- Flood zone 1: Low probability (rivers and sea)
Not published by this council, so not checked: Article 4 directions. Ask the council if these matter.
Possibly incomplete for this council: tree preservation orders.
Also checked, none recorded (22)
flood storage areas, conservation areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.
A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.
Data © Crown copyright and others · sources and licences
Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.
© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.
© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.
© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.
Contains Ordnance Survey data © Crown copyright and database right 2026.
Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.
Planning history at this site
2 other applications at this property, newest first.
Source: Wandsworth
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Around this site
Nearby applications
- 20 Trinity Road SW17 7RE2026/1998 · FullApproved0.0 mi
- 26 Trinity Road SW17 7RE2023/4854 · AmendmentApproved0.0 mi
- Ground Floor 36 Trinity Road SW17 7RE2025/1016 · FullWithdrawn0.0 mi
- 57-59 Trinity Road Wandsworth London Wandsworth SW17 7SD2026/2390 · FullAwaiting decision0.0 mi
- Pavement o/s 330 Balham High Rd SW17 7AA2026/2191 · AdvertisingRefused0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering1.3 mi
- Bello Electrics LTDVerifiedElectrician2.6 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing5.1 mi
- Lambert Heating & Renewables LtdVerified5.6 mi
Planning something similar?
See what the council approved and refused for two-storey and first-floor extensions on your street. Pick your home and get the evidence before you pay for drawings.