33 Chatsworth Avenue Raynes Park SW20 8JZ
Approved on 6 January 2026
Council decision: Grant Permission subject to ConditionsDelegated (officer decision)
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 REAR ROOF MANSARD EXTENSION WITH THE ADDITION OF TWO ROOFLIGHTS TO THE FRONT ROOF SLOPE.
- Received
- 31 October 2025
- Decision level
- Delegated (officer decision)
- Council
- London Borough of Merton
- Ward
- Wimbledon Town and Dundonald
- ReceivedReceived31 Oct
- ValidatedValidated25 Nov
- Consult.Consultation18 Dec
- TargetTarget Date
- DecidedDecided6 Jan
Decided in 42 days (council typically 56)
About this application
This is a full planning application for an extension at 33 Chatsworth Avenue Raynes Park SW20 8JZ. Merton has handled 1,116 applications of this type. This one was decided in 67 days, 11 days longer than Merton's typical decision time. The site is in the Wimbledon Chase conservation area. There are no previous applications recorded at this address. In the past year there have been 15 applications across Wimbledon Town and Dundonald. We hold 1,803 applications in total for the SW20 postcode area.
86% of full applications at London Borough of Merton 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
- SW20 8JZ
- Application type
- Full Planning Permission
- Development type
- Development monitoring information not needed
- Scale / size
- Small
Planning application dates
- Date validated
- 25 November 2025
- Consultation expiry
- 18 December 2025
- Consultation start
- 4 December 2025
- Consultation end
- 18 December 2025
- Last date for comments
- 24 December 2025
- Application expires
- 26 December 2025
- Permission expires
- 6 January 2029
Planning decision
- Statutory period
- 31 days
Publicity
- First advertised
- 4 December 2025
Additional information
- Documents
- 19
Site constraints
Designations that overlap or adjoin the site outline.
- Conservation area: Wimbledon ChasePart of the site
- 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 (20)
flood storage areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, 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.
Source: Merton
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
- 32 Chatsworth Avenue Raynes Park SW20 8JZ26/T0134 · TreesAwaiting decision0.0 mi
- 17 Richmond Avenue Wimbledon Chase London SW20 8LA24/T0020 · TreesAwaiting decision0.1 mi
- 1A Quintin Avenue Wimbledon Chase London SW20 8LD24/P0252 · FullApproved0.1 mi
- Ground Floor Flat 9 Cannon Hill Lane Raynes Park SW20 9EN24/P2197 · ConditionsRefused0.1 mi
- 36A Oxford Avenue Wimbledon Chase London SW20 8LT24/P0082 · ConditionsApproved0.1 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Bello Electrics LTDVerifiedElectrician3.2 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering4.0 mi
- Lambert Heating & Renewables LtdVerified4.4 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing7.4 mi
Planning something similar?
See what the council approved and refused for loft conversions and dormers on your street. Pick your home and get the evidence before you pay for drawings.