Planning application
26/00366/CPD
2 Grange Lane Cookham Maidenhead SL6 9RP
Proposal
Certificate of lawfulness to determine whether the proposed replacement front porch, two storey rear extension, single storey side extension, 1no. rear Juliet balcony and alterations to fenestration following demolition of existing front porch and garage are lawful.
As published by the council, reference 26/00366/CPD
Timeline
Dates from the published record
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11 Feb 2026
Received by Windsor and Maidenhead
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2 Apr 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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26/00982/CPD Granted
2 Grange Lane Cookham Maidenhead SL6 9RP
Certificate of lawfulness to determine whether the proposed replacement front porch, two storey rear extension, single storey side extension, 1no. rear Juliet balcony and alterations to fenestration following demolition of existing front porch and garage are lawful.
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26/00632/PDXL Granted
1 Grange Lane Cookham Maidenhead SL6 9RP
Single storey rear extension no greater than 8.00m in depth, 3.50m high with an eaves height of 2.50m.
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26/00633/CPD Granted
1 Grange Lane Cookham Maidenhead SL6 9RP
Certificate of lawfulness to determine whether the proposed two storey rear extension is lawful.
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26/00634/PDXL Refused
1 Grange Lane Cookham Maidenhead SL6 9RP
2no. single storey side/rear extensions no greater than 8.00m in depth, 3.50m high with an eaves height of 2.50m following demolition of existing garage.
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26/01067/PDXL Refused
1 Grange Lane Cookham Maidenhead SL6 9RP
1no. single storey rear extension and 1no. single storey side/rear extension no greater than 8.00m in depth, 3.50m high with an eaves height of 2.50m.
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22/02242/VAR Granted
Dawn Chorus Poundfield Lane Cookham Maidenhead SL6 9RY
Variation (under Section 73A) of approved plans to substitute those plans approved under 04/41928/FULL for the construction of two storey side extension with front and rear dormers and further two dormers to front and one to rear of existing roof and new porch canopy amendment to approved planning permission 03/41093 with amended plans.
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.