Planning application
26/01259/LDCE
17A Sidney Road London SW9 0TP
Proposal
Application for a Certificate of Lawfulness (Existing) with respect to the use of part of the first floor as a residential flat (Use Class C3).
As published by the council, reference 26/01259/LDCE
Timeline
Dates from the published record
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21 Apr 2026
Received by Lambeth
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30 Apr 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 Lambeth 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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26/00733/TCA Awaiting decision
83 Stockwell Park Road London Lambeth SW9 0DB
(T3) : Neighboring Lime tree Crown thin by 15%, lightly cut back secondary growth encroaching over boundary of no.81 and remove long protruding branch growing over garden - routine maintenance. Height 10.0m Crown spread from 6.0m to 5.0m
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26/00732/TCA Granted
81 Stockwell Park Road London Lambeth SW9 0DB
Back Garden: T1 Lime. Reduce selected branches to reduce height from approximately 6m to 5.5m. Back Garden: T2 False Acacia. Reduce selected branches to reduce height from approximately 7m to 5.2m. Council Note: The site has previously been associated with Tree Preservation Order records. However following inspection and review of the Council's records no evidence has been identified that the Order was confirmed and the Council does not therefore treat the site as subject to a valid Tree Preservation Order. The site is however located within the Stockwell Park Conservation Area. The notified works have been considered under section 211 of the Town and Country Planning Act 1990.
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16/05277/TCA Awaiting decision
62 Stockwell Park Crescent London SW9 0DG
T1 Robinia pseudoacacia, reduce away from building to give 1m clearence (lengths of up to a maximum of 3m being removed)T2 Robinia pseudoacacia, reduce away from building to give 1m clearence (lengths of up to a maximum of 3m being removed)T3 Acer pseudoplatanus, remove lower limb pointing towards flats.
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26/01998/LDCE Awaiting decision
18 Burnley Road London SW9 0SJ
Application for a Certificate of Lawful Development (Existing) with respect to use of the property as a self-contained dwellinghouse (Use Class C3).
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26/01234/TCA Awaiting decision
34 Stockwell Park Crescent London SW9 0DG
T1 : Salix Contorta (Twisted willow) - to reduce. Remove significant dead wood, reduce crown by 20% through thinning/removing 1 in 5 branches, reduce overall size of crown by taking branches back by approx 3m.
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26/00943/TCA Granted
St Michaels Church Stockwell Park Road London SW9 0DA
Frontage on Stockwell Park Road: T1 Rowan. Reduce canopy height and spread by a maximum of 2m. Selectively thin the canopy by up to 30% and remove deadwood, crossing branches and dysfunctional branches.
Other lawful development applications
In Lambeth
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26/02152/LDCP Awaiting decision
111 Hydethorpe Road London SW12 0JF
Demolition of existing shed and erection of one single storey outbuilding in the rear garden
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26/00455/LDCP Granted
129 Hydethorpe Road London SW12 0JF
Application for Certificate of Lawful Development (Proposed) with respect to the erection of a rear dormer roof extension and installation of new rooflights to the front roof slope.
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26/01557/LDCP Granted
6 Perran Road London SW2 3DL
Application for a Certificate of Lawfulness (Proposed) with respect to the change of use of the property from dwelling house (Use Class C3) to small house in multiple occupation (HMO) (Use Class C4).
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26/01500/LDCP Granted
126 Gipsy Road London SE27 9RE
Application for a Certificate of Lawful Development (Proposed) with respect to erection of an L-shaped rear dormer roof extension and installation of 3 front roof lights.
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26/01999/LDCE Awaiting decision
60 Brixton Road London SW9 6BS
Application for a Certificate of Lawful Development (Existing) with respect to the continued existence of an elevated decking platform supported by adjoining walls above the roof terrace, together with safety railings to the outer edge, at Flat 2, 60 Brixton Road. Wooden decking replaced with composite decking as like for like maintenance. The submitted evidence details that the structure has been in place unchanged for 16 years.