Planning application
26/01330/CPD
13 De Havilland Place White Waltham Maidenhead SL6 3HF
Proposal
Certificate of lawfulness to determine whether the proposed outbuilding is lawful.
As published by the council, reference 26/01330/CPD
Timeline
Dates from the published record
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28 May 2026
Received by Windsor and Maidenhead
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17 Jul 2026
Decision issued: Refuse
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25 Jul 2026
Added to PlanIndex
What refusal means
The process from here
The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.
Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.
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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26/00729/CONDIT Granted
Grove Park Industrial Estate Waltham Road White Waltham Maidenhead SL6 3LW
Details required by Condition 3 (Materials) of planning permission 25/01083/VAR for the Variation (under Section 73a) of Condition 4 to substitute those plans approved under 22/01878/REM for the Reserved matters (appearance and landscaping) pursuant to outline planning permission 18/03348/OUT (as amended by 24/00635/VAR) for outline application for access, layout and scale only to be considered at this stage with all other matters to be reserved for the erection of up to x79 dwellings and erection of a nursery building (D1) following demolition of a number of existing buildings with amended plans.
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26/01559/VAR Awaiting decision
Grove Park Industrial Estate Waltham Road White Waltham Maidenhead SL6 3LW
Variation (under Section 73a) of Condition 5 to substitute those plans approved under 25/01083/VAR for the Variation (under Section 73a) of Condition 4 to substitute those plans approved under 22/01878/REM for the Reserved matters (appearance and landscaping) pursuant to outline planning permission 18/03348/OUT (as amended by 24/00635/VAR) for an outline application for access, layout and scale only to be considered at this stage with all other matters to be reserved for the erection of up to x79 dwellings and erection of a nursery building (D1) following demolition of a number of existing buildings with amended plans and without complying with Condition 3 (Materials).
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26/01811/NMA Awaiting decision
Grove Park Industrial Estate Waltham Road White Waltham Maidenhead SL6 3LW
Non material amendments to planning permission 25/01083/VAR for changes to the proposed elevations and materials to plots 10-11, 15-16, 18-19, 24-25, 26-27, 28-29, 39-41, 42-44 and 45-47 and 48-51.
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22/03389/CONDIT Granted
Grove Park Industrial Estate Waltham Road White Waltham Maidenhead SL6 3LW
Details required by Condition 16 (Archaeology) of Planning Permission 18/03348 for Outline application for access, layout and scale only to be considered at this stage with all other matters to be reserved for the erection of up to x79 dwellings and erection of a nursery building (D1) following demolition of a number of existing buildings.
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22/02864/CONDIT Granted
Grove Park Industrial Estate Waltham Road White Waltham Maidenhead SL6 3LW
Details required by Condition 23 (Acoustic) for Planning Permission (18/03348/OUT) for outline application for access, layout and scale only to be considered at this stage with all other matters to be reserved for the erection of up to x79 dwellings and erection of a nursery building (D1) following demolition of a number of existing buildings.
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22/02241/CONDIT Granted
Grove Park Industrial Estate Waltham Road White Waltham Maidenhead SL6 3LW
Details required by Condition 6 (Sample/Specification Of Hardsurfacing) and Condition 17 (Surface Water Drainage Scheme) of planning permission 18/03348/OUT for an outline application for access, layout and scale only to be considered at this stage with all other matters to be reserved for the erection of up to x79 dwellings and erection of a nursery building (D1) following demolition of a number of existing buildings.
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.