23 Thornton Road, Wimbledon, Merton, SW19 4NG
Proposal
APPLICATION FOR REPLACEMENT OF THE EXISTING REAR BASEMENT (KITCHEN) WINDOW WITH A SET OF DOUBLE DOORS, CREATE A SET OF STEPS LEADING UP FROM THE BASEMENT PATIO TO THE GROUND LEVEL PATIO AND ERECTION OF A REAR FLAT ROOF DORMER EXTENSION, INCLUDING ALTERATIONS TO THE INTERNAL LAYOUT .
- Received
- 9 September 2026
- Council
- London Borough of Merton
- Ward
- Hillside
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.
- ReceivedSubmitted9 Sep
- ValidatedValidated
- Consult.Consultation
- TargetTarget Date
- DecidedDecided
This is a planning application for a dormer extension at 23 Thornton Road, Wimbledon, Merton, SW19 4NG. Merton has handled 111 applications of this type and approves 91% of them, typically deciding them in 56 days. It was submitted on 9 September 2026 and is still awaiting a decision. The site is in the Wimbledon West conservation area, with 5 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 144 applications across Hillside. We hold 2,435 applications in total for the SW19 postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Merton
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Planning constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Wimbledon West
- Flood zone 1: Low probability (rivers and sea)
Not published by this council, so not checked: Article 4 directions and tree preservation orders. Ask the council if these matter.
Also checked, none recorded (21)
flood storage 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 2026-10-09. 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.
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