Planning application
26/01431/CPD
363 St Leonards Road Windsor SL4 3DS
Proposal
Certificate of lawfulness to determine whether the proposed 1no. front rooflight, 1no. L-shaped rear dormer with 1no. Juliet balcony and alterations to fenestration are lawful.
As published by the council, reference 26/01431/CPD
Timeline
Dates from the published record
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10 Jun 2026
Received by Windsor and Maidenhead
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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 Windsor and Maidenhead 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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22/03022/LBC Refused
The Stag 300 St Leonards Road Windsor SL4 3DX
Consent for the retention of the existing configuration of the doors, windows, vents and CCTV, retention of side lean-to, plinth and internal alterations.
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26/00788/FULL Awaiting decision
Windsor Football Club Stag Meadow St Leonards Road Windsor SL4 3DR
Removal of existing grass playing pitch surface and perimeter barrier and replacement with new 3G artificial grass pitch surface and new green weldmesh perimeter barrier. Resurfacing between existing spectator perimeter areas and new 3G pitch, replacement of existing floodlights with new led luminaires and installation of new storage container and covered cycle parking.
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26/00421/PDXL Granted
17 Upcroft Windsor SL4 3NH
Single storey rear extension no greater than 5m in depth, 3m high with an eaves height of 3m.
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26/01696/FULL Awaiting decision
26 Peel Close Windsor SL4 3NP
Single storey rear extension.
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22/02883/FULL Refused
26 Upcroft Windsor SL4 3NQ
Single storey front extension, part single, part two storey rear extension and x1 rear dormer to accommodate the loft conversion
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23/00249/FULL Granted
26 Upcroft Windsor SL4 3NQ
Single storey front /side extension, part single part two storey rear extension, 1no. rear dormer to create accommodation within the roof space and alterations to fenestration.
Other lawful development applications
In Windsor and Maidenhead
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26/01836/CPD Awaiting decision
Rivendale 22A Gloucester Drive Wraysbury Staines TW18 4TY
Certificate of lawfulness to determine whether the proposed conversion of the existing garage into habitable space is lawful.
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26/01528/CPD Granted
Foxley Manor Forest Green Road Holyport Maidenhead SL6 2NW
Certificate of lawfulness to determine whether the proposed erection of an outbuilding is lawful.
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26/01532/CPD Granted
72 Highway Avenue Maidenhead SL6 5AQ
Certificate of Lawfulness to determine whether the proposed rear dormer roof extension and associated internal alterations to enlarge the existing loft accommodation is lawful.
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26/01823/CPD Awaiting decision
Highwood Corner Grubwood Lane Cookham Maidenhead SL6 9UB
Certificate of lawfulness to determine whether the proposed garage conversion, alterations to fenestration, 1 no. front dormer and 1 no. rear dormer to facilitate a loft conversion is lawful.
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26/01772/CPD Granted
18 Broken Furlong Eton Windsor SL4 6PD
Certificate of lawfulness to determine whether the proposed erection of a single storey rear detached annex to be used incidental with the host dwelling is lawful.