Planning application
20 TROUTBECK ROAD, LONDON, SE14 5PN
Works: Extension Loft or dormer 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
Construction of dormer extension in the rear roof slope,installation of roof lights in the front and roof slope, replacement single storey rear extension and construction of outbuilding in the rear garden and all associated works at 20 Troutbeck Road SE14.
As published by the council, reference DC/25/142294
Application record
- Reference
- DC/25/142294
- Type
- Full Planning Permission
- Status
- Decided
- Decision
- Granted
- Received
- 28 Nov 2025
- Validated
- 1 Dec 2025
- Decided
- 18 Feb 2026
- Ward
- Telegraph Hill
- Decision by
- Delegated
- Postcode
- SE14 5PN
Site history
Applications at this address on the Lewisham register
This site has had 2 applications since 2025: 1 approved, 1 refused.
-
DC/25/141328 Refused
20 TROUTBECK ROAD, LONDON, SE14 5PN
The construction of dormer extension to the side and rear roof slopes, outbuilding in the rear garden and replacement rear extension at 20 Troutbeck Road SE14.
Timeline
Dates from the published record
-
28 Nov 2025
Received by Lewisham
-
1 Dec 2025
Validated
Checked as complete and ready for consideration.
-
18 Feb 2026
Decision issued: Granted
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
SJ Architects Ltd Agent, an architecture practice
15 applications on PlanIndex · across 4 councils · 79% granted
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See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
22 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
Lewisham granted permission on 18 February 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 full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
9 TROUTBECK ROAD, LONDON, SE14 5PN
Replacement of existing uPVC windows with double glazed uPVC to match existing at the front and rear elevation, and the reinstatement of porch door, garden tiles, hanging tiles, boundary wall and the installation of a rooflight on the front roofslope at 9 Troutbeck Road, SE14
Granted Householder Extension Loft or dormer +1 46 docsSmall domestic -
32A TROUTBECK ROAD, LONDON, SE14 5PN
The installation of replacement double glazed timber casement windows at the first floor and main entrance timber door to the front elevation of 32A Troutbeck Road, SE14, together with installation of replacement double glazed uPVC casement windows to the rear elevation and roof re-tiling.
Granted Full applications Roofing Windows or glazing 15 docs -
24 TROUTBECK ROAD, LONDON, SE14 5PN
Change of use from existing HMO (Use Class C4) into a larger HMO (Use Clas Sui Generis) at 24 Troutbeck Road SE14.
Refused Full applications 19 docs -
20 TROUTBECK ROAD, LONDON, SE14 5PN
The construction of dormer extension to the side and rear roof slopes, outbuilding in the rear garden and replacement rear extension at 20 Troutbeck Road SE14.
Refused Full applications Extension Loft or dormer 21 docs -
FLAT 1, 39 TROUTBECK ROAD, LONDON, SE14 5PN
Retrospective application for the insertion of a patio door in the pre-existing window opening to the rear of Flat 1, 39 Troutbeck Road, SE14.
Granted Full applications Windows or glazing 11 docs -
6 TROUTBECK ROAD, LONDON, SE14 5PN
Construction of a rear dormer, installation of front and rear rooflights, and all associated works at 6 Troutbeck Road, SE14.
Granted Householder Loft or dormer 9 docsDomestic
Other full applications
In Lewisham
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DC/26/145447 Awaiting decision
298 LEWISHAM ROAD, LONDON, SE13 7PA
Installation of replacement double-glazed uPVC windows on front and rear elevations; replacement of composite door on the front elevation and uPVC door on the rear elevation at 298 Lewisham Road, SE13.
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DC/26/145468 Awaiting decision
HABERDASHERS ASKES HATCHAM GIRLS SCHOOL, JERNINGHAM ROAD, LONDON, SE14 5NY
Installation of replacement double glazed timber windows at the north elevation of the Main Building Block at Haberdashers Askes Hatcham Girls School, Jerningham Road, SE14.
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DC/26/145446 Awaiting decision
164 SPRINGBANK ROAD, LONDON, SE13 6SU
Installation of replacement windows with double-glazed uPVC windows in the front and rear elevations, a composite door in the front elevation and uPVC door in the rear elevation to Flats A - D, 164 Springbank Road SE13.
-
DC/26/145292 Awaiting decision
NEPTUNE WHARF, GRINSTEAD ROAD, LONDON, SE8 5FE
Infill of the existing undercroft vehicle access area between Blocks A and B to create 280sqm of commercial floorspace (Use Class E), including alterations to commercial servicing arrangements, refuse and recycling management, and associated changes to the building elevations.
-
DC/26/145288 Awaiting decision
SMIKLE COURT, HATCHAM PARK MEWS, LONDON, SE14 5DG
Details submitted pursuant to Condition 3-Construction Management Plan, Condition 4-Privacy Screen, Condition 6(a)-Refuse and Recycling, Condition 7(a)-Cycle Parking, Condition 8(a)-Hard and Soft Landscaping and Condition 11-PV Panels of planning permission DC/24/138499 dated 4th March 2025 at Smikle Court, Hatcham Park Mews SE14.