100 Underhill Road London Southwark SE22 0QU
Approved on 25 April 2025
Council decision: Certificate of Lawfulness Prop- GRANTEDDelegated (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
Certificate of lawfulness (proposed) for the construction of a dormer over outrigger to the rear of the existing roof (including one roof light and eight solar panels), a hip-to-gable roof extension, and two front roof lights.
- Received
- 12 March 2025
- Decision level
- Delegated (officer decision)
- Council
- London Borough of Southwark
- Ward
- Dulwich Hill
- Agent
- Sketch Architects
- ReceivedReceived12 Mar
- ValidatedValidated13 Mar
- Consult.Consultation
- TargetTarget Date7 May
- DecidedDecided25 Apr
Decided in 43 days (council typically 49)
About this application
This is an outline application for a dormer extension at 100 Underhill Road London Southwark SE22 0QU. Southwark has handled 202 applications of this type. This one was decided in 44 days, 5 days quicker than Southwark's typical decision time. There have been 4 other applications at this address. In the past year there have been 74 applications across Dulwich Hill. We hold 929 applications in total for the SE22 postcode area.
94% of outline applications at London Borough of Southwark were approved. Across all application types, the council typically decides in about 7 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
- SE22 0QU
- Application type
- Certificate of Lawful Dev. - Proposed
- Scale / size
- Small
- Parish
- Dulwich
Planning application dates
- Date validated
- 13 March 2025
- Target decision date
- 7 May 2025
- Permission expires
- 25 April 2030
Applicant and agent
- Agent
- Sketch Architects
- Agent address
- 16 Ford Lane Wrecclesham Farnham GU10 4SH
Planning decision
- Statutory period
- 55 days
Site constraints
Designations that overlap or adjoin the site outline.
- Tree Preservation Order: Ref 171Next to the site · +1 more
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (23)
flood storage areas, conservation areas, listed buildings, Article 4 directions, 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.
Associated applications
- 202512 Mar
Construction of a rear mansard loft conversion, installation of solar panels to the flat roof of the…
ApprovedHouseholderFiled alongside25/AP/0719 - 202512 Mar
Single storey side and rear extension
ApprovedHouseholderFiled alongside25/AP/0720 - 202512 Mar
Certificate of lawfulness (proposed) for the construction of a dormer over outrigger to the rear of the…
This applicationApprovedOutline25/AP/0721
Planning history at this site
2 other applications at this property, newest first.
Source: Southwark
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
- 100 Underhill Road London Southwark SE22 0QU25/AP/0719 · FullApproved0.0 mi
- 100 Underhill Road London Southwark SE22 0QU25/AP/0720 · FullApproved0.0 mi
- 100 Underhill Road London Southwark SE22 0QU25/AP/2281 · FullWithdrawn0.0 mi
- 100 Underhill Road London Southwark SE22 0QU25/AP/1519 · OutlineRefused0.0 mi
- 103B Underhill Road London Southwark SE22 0QS25/AP/1400 · TreesApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering2.9 mi
- S & M Solutions Ltd | Design and Build ContractorVerifiedLondonExtensionsLoft Conversions4.4 mi
- Bello Electrics LTDVerifiedElectrician4.6 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing5.4 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.