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
Agent on file, an architecture practice
12 applications on PlanIndex · across 2 councils · 82% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
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.
Trade members open them from here.
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 500 metres
-
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 -
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 -
HABERDASHERS ASKES HATCHAM GIRLS SCHOOL, JERNINGHAM ROAD, LONDON, SE14 5NY
REAR: line of Limes (T3) LATERAL REDUCTION of lower branches overhanging access route by 4.7m, from 5.8m to 1.1m back to boundary line. Reason: to remove opportunity for students to swing on branches causing bark rubbing on fence top. FRONT: ONE Ash (T5) (approx.ht 7m, radius approx.4m) REDUCE RADIUS by 1m, from 3.6m to 2.6m on S compass point. CROWN LIFT to 3m above ground level. Reason: to clear from building and CCTV security camera. FRONT: ONE Shrub (T7)(ht.3-4m) Remove dying branch 1.2m in length on N compass point (exempt work).
Granted Trees 15 docsSmall domestic
Other full applications
In Lewisham
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DC/26/144712 Granted
111 SYDENHAM ROAD, LONDON, SE26 5UA
Details submitted pursuant to Condition 3-Shop Fronts and Condition 4-Windows of planning permission DC/25/142257 dated 20th March 2026 at 111 Sydenham Road SE26.
-
DC/26/144612 Refused
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DC/26/144621 Granted
FIRST FLOOR FLAT, 53 HOMECROFT ROAD, LONDON, SE26 5QN
Construction of a rear L-shaped roof extension and the installation of two rooflights in the front roof slope at First Floor Flat, 53 Homercroft Road, SE26, and associated works.
-
DC/26/142771 Granted
LAND REAR OF, 421 NEW CROSS ROAD, FRONTING STANLEY ST LONDON, SE14 6TA
Demolition of the existing building and construction of a new 4 storey building to provide flats (Use Class C3) with outdoor amenity space, cycle and refuse storage and all associated works at the rear of 421 New Cross Road, fronting onto Stanley Street SE14 and subject to a Legal Agreement pursuant to S106 of the Town and Country Planning Act 1990 (as amended).
-
DC/25/142252 Refused
139-141 LEWISHAM HIGH STREET, LONDON, SE13 6AA
The installation of a new shopfront, retractable awning and roller shutter at 139-141 Lewisham High Street SE13.