Planning application
26/00531/CPD
17 Harefield Road Maidenhead SL6 5EA
Proposal
Certificate of lawfulness to determine whether the proposed single storey side extension is lawful.
As published by the council, reference 26/00531/CPD
Timeline
Dates from the published record
-
26 Feb 2026
Received by Windsor and Maidenhead
-
11 Mar 2026
Validated
Checked as complete and ready for consideration.
-
10 Apr 2026
Decision issued: Permitted Development
-
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
-
26/01284/FULL Granted
12 Headington Road Maidenhead SL6 5JH
Relocation of the entrance door, single storey front extension and single storey side/front extension following demolition to existing side elements.
-
22/03028/CPD Granted
26 Farm Road Maidenhead SL6 5HZ
Certificate of lawfulness to determine whether the proposed hip to gable, rear dormer and side rooflight is lawful.
-
23/00140/FULL Granted
18 Headington Road Maidenhead SL6 5JJ
Single storey front extension, part single, part two storey rear extension, hip to gable, 1no. rear dormer, alterations to fenestration, 3no. parking spaces and widening of the existing entrance.
-
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.
-
26/01023/FULL Granted
47 Birdwood Road Maidenhead SL6 5AP
Single storey front extension, relocation of the entrance door, single storey rear/side extension, loft conversion, 1no. side and 1no. rear dormer and alterations to fenestration and existing patio following demolition of existing conservatory.
-
23/00292/CPD Granted
10 Truro Close Maidenhead SL6 5JG
Certificate of lawfulness to determine whether the single storey outbuilding is lawful.
Other lawful development applications
In Windsor and Maidenhead
-
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.
-
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.
-
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.
-
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.