Planning application
DC/26/142688
15 THRIFFWOOD, SILVERDALE, LONDON, SE26 4SH
Proposal
Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) Classes B and C of Schedule 2, Part 1 and Part 14, Class A of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for construction of a rear dormer with three front-slope rooflights and solar panels to 15 Thriffwood, Silverdale, SE26 4SH.
As published by the council, reference DC/26/142688
Timeline
Dates from the published record
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16 Jan 2026
Received by Lewisham
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10 Mar 2026
Decision issued: Granted
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25 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
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DC/26/142690 Granted
15 THRIFFWOOD, SILVERDALE, LONDON, SE26 4SH
Construction of a rear roof dormer extension, three frontslope rooflights, replacement of cladding to the rear elevation and extension, an extension rooflight, front and rear extension window replacements, and all associated works at 15 Thriffwood, Silverdale, SE26.
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DC/20/115164 Granted
70 SILVERDALE, LONDON, SE26 4SJ
Lawful Development Certificate (Proposed) in respect of the construction of a front porch at 70 Silverdale SE26
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DC/14/088440 Granted
HOMEFIELD HOUSE, DACRES ROAD, LONDON, SE23 2NZ
The installation of replacement white uPVC double glazed windows to Flats at 1-16 Homefield House, Dacres Road SE23
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DC/14/88440 Granted
HOMEFIELD HOUSE, DACRES ROAD, LONDON, SE23 2NZ
The installation of replacement white uPVC double glazed windows to Flats at 1-16 Homefield House, Dacres Road SE23
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DC/26/144673 Awaiting decision
153 SILVERDALE, LONDON, SE26 4SQ
Replacement of the existing windows and doors property with new double glazed uPVC framed windows, composite front entrance doors, and uPVC rear door at 153 Silverdale SE26.
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DC/14/88330 Granted
TREVENNA HOUSE, DACRES ROAD, LONDON, SE23 2NY
Replacement of the existing roof tiles at Trevenna House, 1-18 Dacres Road SE23, with white PVC shiplap cladding.
Other lawful development applications
In Lewisham
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DC/26/144205 Granted
350 DOWNHAM WAY, BROMLEY, BR1 5NR
Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) and Classes B and C of Schedule 2, Part 1 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the construction of a hip-to-gable extension, a rear dormer extension, and the installation of two roof lights on the front elevation at 350 Downham Way, BR1
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DC/26/143757 Granted
74 FARMFIELD ROAD, BROMLEY, BR1 4NG
Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) Classes B and C of Schedule 2, Part 1 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the hip-to-gable roof conversion, construction of a rear roof extension and installation of front rooflights at 74 Farmfield Road, BR1.
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DC/26/144149 Granted
11 AMERSHAM ROAD, LONDON, SE14 6QQ
Application for a Lawful Development Certificate (Existing) submitted under Section (191) of the Town & Country Planning Act 1990 (as amended) for the continued use of one front and three rear roof terraces and alterations to the front and rear elevations at 11 Amersham Road, SE14.
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DC/26/144811 Awaiting decision
26 ENTERPRIZE WAY, LONDON, SE8 3PJ
Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) and Classes A, B, C and D of Schedule 2, Part 1 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the construction of a single-storey rear extension, replacement of windows, rear dormer extension, a new rooflight and alterations to the front porch at 26 Enterprize Way.
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DC/26/144128 Refused
11 WELLMEADOW ROAD, LONDON, SE13 6SY
Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) and Classes A, B and C of Schedule 2, Part 1 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the construction of a loft conversion with a rear roof dormer, raising of the parapet walls and three front slope rooflights at 11 Wellmeadow Road, SE13.