Planning application
6 Court Lane London Southwark SE21 7DR
Works: Extension Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Contruction of an extension to existing outbuilding
As published by the council, reference 25/AP/3437
Application record
- Reference
- 25/AP/3437
- Type
- Householder Application
- Status
- Granted
- Decision
- Granted As published: Householder - GRANTED
- Received
- 25 Nov 2025
- Validated
- 26 Nov 2025
- Decided
- 20 Jan 2026
- Ward
- Dulwich Village
- Parish
- Dulwich
- Decision by
- Delegated Panel - Simple
- Postcode
- SE21 7DR
Site history
Applications at this address on the Southwark register
This site has had 3 applications since 2020: 3 approved, 0 refused.
-
20/AP/2018 Granted
6 Court Lane London Southwark SE21 7DR
Construction of a single storey side and rear extension, construction of a bin store and electric car charging point to front, insertion of 2 x roolights to rear outrigger, removal of 1 x window and replacement window to first floor side and construction of a single storey rear outbuilding (gym and external terrace).
-
20/AP/2019 Granted
6 Court Lane London Southwark SE21 7DR
Re-cladding of existing dormer on the side and rear elevation
Timeline
Dates from the published record
-
25 Nov 2025
Received by Southwark
-
26 Nov 2025
Validated
Checked as complete and ready for consideration.
-
20 Jan 2026
Decision issued: Householder - GRANTED
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Design Squared Ltd Agent, a design practice registered in Brighton
Active · incorporated 2010 · Brighton
135 applications on PlanIndex · across 13 councils · 93% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
18 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
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Open the documentsWhat this grant of permission means
Southwark granted permission on 20 January 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
6 Court Lane London Southwark SE21 7DR
Construction of a single storey side and rear extension, construction of a bin store and electric car charging point to front, insertion of 2 x roolights to rear outrigger, removal of 1 x window and replacement window to first floor side and construction of a single storey rear outbuilding (gym and external terrace).
Granted Householder Extension Windows or glazing 22 docsSmall domestic -
6 Court Lane London Southwark SE21 7DR
Re-cladding of existing dormer on the side and rear elevation
Granted Householder Loft or dormer 16 docsDomestic -
12 Court Lane London Southwark SE21 7DR
Tree works prune the pittosporum tree: Reduction: 2 m, Thinning: maximum 10%, Lift: 2.5 m above ground level
Granted Trees 3 docs -
61 Dulwich Village London Southwark SE21 7BJ
Works to tree with a TPO: T1 on appended arboricultural report (TPO no. 521A 2018), and T2 and TG1 as identified on the appended Tree Survey. The proposals, as set out in the appended report, seek to enable the replacement of an incoming lead water pipe with a new pipe.
Granted Trees 13 docs -
61 Dulwich Village London Southwark SE21 7BJ
Lowering basement floor slab, removing the conservatory roof and reinstating rear basement light well with new patio doors, replacing garage door with partially glazed wall and replacing wall/door to storage beneath entrance steps.
Granted Householder Extension Windows or glazing 43 docsSmall domestic -
The Crown And Greyhound 73 Dulwich Village London Southwark SE21 7BJ
99% historically approved · decision due ~4 Dec
6851 Sycamore - Clear basal and epicormic growth, and remove deadwood. 6850 Common Ash - Create pollard structure at 2m away from crown break back to closest growth points and sever ivy at base. 6849 Sycamore - Crown reduce, sever ivy to 2m, remove leaning secondary stem (no herbicide), and clear deadwood in canopy. 6848 Cherry Laurel - Pollard to approximately 2.4m above ground level; wounds will exceed 10cm but species is tolerant. 6847 Common Ash - Fell to 50cm above ground and treat with systemic herbicide. 6846 Apple Species - Fell to approximately 1m above ground and treat with systemic herbicide. 6845 Sycamore - Crown reduce, sever ivy to 2m, cut ivy back to stem in canopy to allow for full inspection, remove deadwood, remove lowest limb on South Western aspect (approx 3.5m) back to stem and crown lift to 4m above ground level. 6844 Common Holly - Fell to 50cm above ground and treat with systemic herbicide. 6843 Horse Chestnut - Clear basal and epicormic growth and sever ivy to 2m above ground. 6842 Sycamore - Re-coppice stems back to ground level. 6841 Pedunculate Oak - Crown reduce, sever ivy to 2m, cut ivy in canopy for inspection, and remove deadwood.
Awaiting decision Trees 5 docs
Other householder applications
In Southwark
-
26/AP/2158 Granted
7 Alma Grove London Southwark SE1 5PY
Erection of a rear ground floor side extension with a framed glass roof and bi-folding rear doors. Replacement of windows and door. Alterations to external facade.
-
26/AP/2601 Awaiting decision
49 Henshaw Street London Southwark SE17 1PE
Demolition of existing rear extension and construction of part single, part two storey rear extension and erection of roof terrace on main roof with balustrades and glazed access hatch.
-
26/AP/2545 Awaiting decision
76 Shenley Road London Southwark SE5 8NQ
Construction of a single storey side and rear extension to the rear; construction of a rear dormer roof extension over the main roofslope and the installation of 3x rooflights to the front roofslope.
-
26/AP/2533 Awaiting decision
28 Tyrrell Road London Southwark SE22 9NE
Construction of rear extension.
-
26/AP/2517 Awaiting decision
65 Calton Avenue London Southwark SE21 7DF
Construction of a ground-floor side-rear extension with terrace reinstated above; alterations to the rear outrigger, including raising the eaves and ridge, removal of the chimney stack, replacement windows, and installation of two rooflights; enlargement of the existing rear dormer; erection of bin and bike stores in the front garden, together with new landscaping and a front boundary wall; installation of an EV charger to front elevation and removal of existing front porch door; removal of existing garden buildings and erection of a shed, sauna and pergola in the rear garden, together with new landscaping and decking.