Planning application
DC/26/143492
14 SIDDONS ROAD, LONDON, SE23 2JQ
Proposal
Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) Class B of Schedule 2, Part 1 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the construction of an L-shaped rear extension at 14 Siddons Road, SE23.
As published by the council, reference DC/26/143492
Timeline
Dates from the published record
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25 Mar 2026
Received by Lewisham
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25 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Lewisham for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
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/26/143742 Granted
14 SIDDONS ROAD, LONDON, SE23 2JQ
Construction of a ground floor wrap-around rear extension and all associated works to 14 Siddons Road, SE23.
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DC/21/121425 Granted
34 COMO ROAD, LONDON, SE23 2JW
Construction of a single storey rear extension at 34 Como Road, SE23.
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DC/20/115572 Granted
78 COMO ROAD, LONDON, SE23 2JW
Certificate of Lawful Development (Proposed) in respect construction of a hip to gable and rear roof extension at 78 Como Road, SE23, together with the installation of two roof lights on the front roof slope and the construction of a single storey outbuilding in the rear garden
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DC/26/142906 Granted
78 COMO ROAD, LONDON, SE23 2JW
Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) and Class A 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 at 78 Como Road, SE23.
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DC/21/121387 Granted
14 SHIPMAN ROAD, LONDON, SE23 2DY
Construction of a rear roof extension at 14 Shipman Road, SE23 and the installation of three roof lights in the front roof slope.
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DC/24/138366 Granted
1 SHIPMAN ROAD, LONDON, SE23 2DY
Construction of rear L-shaped dormer with a juliet balcony along with three front facing rooflights and all associated works at 1 Shipman Road SE23.
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.