Planning application
26/01359/CPD
123 Oxford Road Windsor SL4 5DX
Proposal
Certificate of lawfulness to determine whether the proposed L-shaped rear dormer and 2no. front rooflights are lawful.
As published by the council, reference 26/01359/CPD
Timeline
Dates from the published record
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2 Jun 2026
Received by Windsor and Maidenhead
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24 Jun 2026
Decision issued: Permitted Development
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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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26/01358/FULL Granted
123 Oxford Road Windsor SL4 5DX
Alterations to fenestration and external finishes.
-
21/01753/CPD Granted
1 Bexley Street Windsor SL4 5BP
Certificate of lawfulness to determine whether the proposed loft conversion and rear dormer is lawful.
-
26/01245/FULL Awaiting decision
84 Arthur Road Windsor SL4 1RX
2no. front rooflights and a rear second floor roof extension.
-
22/03370/CPD Granted
18 Bexley Street Windsor SL4 5BP
Certificate of lawfulness to determine whether the proposed 2no. front rooflights and rear L-shaped dormer with Juliet balcony is lawful.
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22/03373/FULL Refused
18 Bexley Street Windsor SL4 5BP
Basement extension, new front bay window, part single, part two storey side/rear extension, rear glass veranda, new roof to the rear with raising of the eaves, alterations to fenestration, new boundary walls and a detached outbuilding.
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24/02318/CONDIT Granted
43 Alma Road Windsor SL4 3HN
Details required by Conditions 2 (materials), 3 (doors and windows), 5 (walls and fencing), 8 (cycle parking), 10 (lighting scheme), 11 (biodiversity enhancements) of planning permission 21/02886/FULL for the subdivision of the existing dwelling to create x2 semi-detached dwellings, including the enlargement of the rear basement lightwell, two storey side extension, two storey rear extension, single storey side/rear infill extension, addition of a privacy screen, raising of part of the existing roof, alterations to fenestration and widening of the existing access to include turntable and new drop kerb following demolition of the existing part single storey part two and three storey rear element.
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.
-
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.