6 Walberswick Street London SW8 1XG
Refused on 3 October 2025
Council decision: Refuse PermissionDelegated (officer decision)2 reasons for refusal
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 single storey ground floor extension, together with a second floor rear extension. Erection of a rear dormer roof extension with a Juliet balcony. Replacement of rear windows and two side facing windows. Removal of rear chimney.
- Received
- 24 June 2025
- Decision level
- Delegated (officer decision)
- Council
- London Borough of Lambeth
- Ward
- Oval
- Agent
- Kinsonov Architects
- ReceivedReceived24 Jun
- ValidatedValidated17 Jul
- Consult.Consultation12 Aug
- TargetTarget Date11 Sep
- DecidedDecided3 Oct
Decided in 78 days (council typically 56)
About this application
This is a full planning application for a dormer extension at 6 Walberswick Street London SW8 1XG. Lambeth has handled 398 applications of this type. This one was decided in 101 days, 6 weeks longer than Lambeth's typical decision time. The site is in 1 listed building nearby. There has been 1 other application at this address. In the past year there have been 78 applications across Oval. We hold 1,525 applications in total for the SW8 postcode area.
70% of full applications at London Borough of Lambeth 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.See what's approved near your address
Why it was refused
- The proposed rear dormer, by reason of its excessive size, bulk and siting, would fail to appear as a subordinate addition to the host property and would result in a visually dominant and incongruous form of development, detracting from the character and appearance of the dwelling and the surrounding area. The proposal is therefore contrary to Policy Q11 of the Lambeth Local Plan (2021) and the guidance contained within SPD (2023) London planning@lambeth.gov.uk SW2 9QQ
- The proposed second floor extension, by reason of its height, bulk and positioning over the existing rear return, would appear as an incongruous addition that fails to respect the established uniformity and architectural rhythm of the rear elevations within this terrace. The rear returns remain unaltered at second floor level and the introduction of an extension in this location would disrupt the consistent built form, resulting in harm to the character and appearance of the host property and the terrace. The proposal is therefore contrary to Policies Q5 and Q11 of the Lambeth Local Plan (2021).
From the council's decision notice.
Application details
- Postcode
- SW8 1XG
- Application type
- Full Planning Permission
- Scale / size
- Small
Planning application dates
- Date validated
- 17 July 2025
- Consultation expiry
- 12 August 2025
- Consultation end
- 12 August 2025
- Neighbour consultation end
- 12 August 2025
- Target decision date
- 11 September 2025
Applicant and agent
- Agent
- Kinsonov Architects
- Architect profile
- KINSONOV LTD
- Agent address
- Studio 2 152-154 Holland Road London W14 8BE
Planning decision
- Statutory period
- 56 days
Site constraints
Designations that overlap or adjoin the site outline.
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (24)
flood storage areas, conservation areas, listed buildings, Article 4 directions, tree preservation orders, 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.
- 202522 Oct
Erection of a rear mansard roof extension and installation of 1 rooflight to the front roof slope.
ApprovedFull Planning Permission25/03322/FUL - 202510 Oct
Erection of a single storey ground floor extension, replacement of rear windows and two side facing windows…
ApprovedFull Planning Permission25/03208/FUL
Source: Lambeth
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
- 6 Walberswick Street London SW8 1XG25/03322/FUL · FullApproved0.0 mi
- 6 Walberswick Street London Lambeth SW8 1XG25/03208/FUL · FullApproved0.0 mi
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- Kiosk Outside 147 South Lambeth Road London SW826/00265/FUL · FullRefused0.0 mi
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For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Avent Roofing ServicesVerifiedWestminsterRoofing2.2 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering2.8 mi
- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman3.2 mi
- Orient Construction Consultancy LimitedVerifiedLondon5.2 mi
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