1 Alleyn Road London Southwark SE21 8AB
Approved on 12 August 2026
Proposal
Removal of Condition 4 Landscaping Scheme full planning application 23/AP/3087 dated 13/03/2024 for Enlargement of existing basement with 1no. Lightwell to the front and 1no. Lightwell to the south elevation, associated with new patio area in the rear garden and replacement of ground floor windows; - Construction of loft conversion with 2no. dormer windows and 2no. roof windows on northwest and southeast elevations, associated with removal of 1no. chimney to the front slope and change of roof top on garage; - Conversion of side conservatory to a bricked extension; - Enlargement of vehicular entrance to garage and blocking up of a side door, - blocking up of a rear window and door of the garage; - Installation of solar slates on front and rear roof slopes of both main house and garage; - Installation of 2nos. ASHP and 1no. AC unit on south elevation; - Proposed material railings and gates on the front boundary; Condition Number(s): 4 Conditions(s) Removal: Specifically on Point 4 of the attached it?s asking for this to be approved in advance. I?ve attached our landscaping plans. The specific planting schedule will be done closer to the time. In regards to tree protections we will protect the 5 lime trees along with their roots by having hoarding covering the existing grass area surrounding the trees. n/a
- Received
- 19 June 2026
- Council
- London Borough of Southwark
- Ward
- Dulwich Wood
- ReceivedReceived19 Jun
- ValidatedValidated22 Jun
- Consult.Consultation
- TargetTarget Date16 Aug
- DecidedDecided12 Aug
Decided in 51 days (council typically 49)
About this application
This is an application to amend a permission at 1 Alleyn Road London Southwark SE21 8AB. Southwark has handled 146 applications of this type. This one was decided in 51 days. There has been 1 other application at this address. In the past year there have been 83 applications across Dulwich Wood. We hold 1,063 applications in total for the SE21 postcode area.
88% of amendment 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
- SE21 8AB
- Application type
- S.73 Vary/Remove Conds/Minor Alterations
- Scale / size
- Small
- Parish
- Dulwich
Planning application dates
- Date validated
- 22 June 2026
- Target decision date
- 16 August 2026
Planning decision
- Statutory period
- 55 days
Site constraints
Designations that overlap or adjoin the site outline.
- Tree Preservation Order: Ref 581Part of 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.
Planning history at this site
1 other application 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
- 1 Alleyn Road London Southwark SE21 8AB25/AP/3358 · AmendmentApproved0.0 mi
- Loggetts Alleyn Park London Southwark SE21 8AS25/AP/1551 · TreesApproved0.0 mi
- 12 Alleyn Crescent London Southwark SE21 8BN25/AP/1925 · TreesApproved0.0 mi
- 7 Alleyn Crescent London Southwark SE21 8BN26/AP/1143 · FullApproved0.0 mi
- 5 Loggetts Alleyn Park London Southwark SE21 8AS26/AP/0508 · TreesApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering1.8 mi
- Bello Electrics LTDVerifiedElectrician3.3 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing5.5 mi
- S & M Solutions Ltd | Design and Build ContractorVerifiedLondonExtensionsLoft Conversions5.7 mi
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