Planning application
26/01150/LDCP
21 Knoll Road Sidcup Kent DA14 4QT
Proposal
Lawful development certificate (proposed) for the conversion of roof space including hip to gable enlargement, rear dormer extension and rooflights to front and rear roof slope.
As published by the council, reference 26/01150/LDCP
Timeline
Dates from the published record
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11 Jun 2026
Received by Bexley
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15 Jun 2026
Validated
Checked as complete and ready for consideration.
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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 Bexley 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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26/01149/FUL Awaiting decision
21 Knoll Road Sidcup Kent DA14 4QT
Erection of a single storey rear and side extension
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14/01389/FUL Granted
Merton Court School 38 Knoll Road Sidcup Kent DA14 4QU
Proposal under Section 73 of The Town and Country Planning Act 1990 regarding a two storey rear extension, replacing existing part two/part single storey extension approved under planning permission 12/00958/FUL to allow removal of BREEAM assessment condition.
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12/00958/FULMIN Granted
Merton Court School 38 Knoll Road Sidcup Kent DA14 4QU
Minor amendments being change of material to windows at first floor level; addition/replacement of ground floor canopy and addition/replacement of doors to classrooms 5 and 6; raising of eaves/gutter/roof ridge to south elevation; removal of ground floor windows to classrooms 3, 6 and 9; addition of an external staircase and canopy to north elevation, pursuant to planning permission 12/00958/FUL relating to a two storey rear extension, replacing existing part two/part single storey extension.
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26/00577/LDCP Granted
47 Knoll Road Sidcup Kent DA14 4QT
Lawful Development Certificate (Proposed) for the conversion of garage to habitable room with alteration of fenestration to side/rear ground floor elevation.
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25/02319/S211 Awaiting decision
6 Old Forge Way Sidcup Kent DA14 4QL
Works to various trees within Old Forge Way Conservation Area.
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18/01144/S211 Decided
10 Old Forge Way Sidcup Kent DA14 4QL
Works to trees within a Conservation Area being, crown reduction of one Oak tree in rear garden and pruning of one Yew and Leyland Cypress.
Other lawful development applications
In Bexley
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26/01110/LDCP Granted
106 Long Lane Bexleyheath Kent DA7 5AW
Lawful Development Certificate (Proposed) for the conversion of roof space including rear L-shaped dormer extension.
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26/01099/LDCP Granted
41 Sherbrooke Close Bexleyheath Kent DA6 7EQ
Lawful Development Certificate (Proposed) for the conversion of roof space involving alterations to existing roofline including a rear dormer extension and rooflight to front roofslope.
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26/01055/LDCP Granted
48 Hythe Avenue Bexleyheath Kent DA7 5NU
Lawful Development Certificate (Proposed) for the conversion of existing side garage and WC to habitable space.
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26/01464/LDCP Awaiting decision
7 Stephen Road Bexleyheath Kent DA7 6EF
Lawful Development Certificate (Proposed) for the siting of a mobile home for ancillary use to the main dwellinghouse.
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26/01074/LDCP Granted
49 Hatherley Road Sidcup Kent DA14 4BB
Lawful Development Certificate (Proposed) for the erection of a single storey rear extension following demolition of existing rear lean to.