Planning application
26/00571/CPD
21 Arnold Road Laleham Staines-upon-Thames TW18 1LY
Proposal
Certificate of Lawfulness for proposed hip to gable roof alteration with rear facing dormer and 2 no. roof lights on front roof plane (As shown on Location plan and plans no's MATTHEW/PLAN/001, /002, /003, /004 rec'd 01.06.2026.)
As published by the council, reference 26/00571/CPD
Timeline
Dates from the published record
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1 Jun 2026
Received by Spelthorne
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27 Jul 2026
Decision issued: Grant Cert Lawful Prop Use/Dev
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30 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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26/00570/PDH Granted
21 Arnold Road Laleham Staines-upon-Thames TW18 1LY
Prior approval notification for a single storey rear extension measuring 6 metres in depth beyond the rear wall of the original dwelling house measuring a maximum height of 3 metres and a height to the eaves of 3 metres. (As shown on location plan and plans no'd MATHEW/PLAN/001, /002, /003 rec'd 01.06.2026).
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26/00533/PDH Granted
141 Elizabeth Avenue Laleham Staines-upon-Thames TW18 1JN
Prior Approval Notification for a single storey rear extension extending 5.0 metres beyond the rear wall of the original house, with a maximum height of 2.94 metres and a height of 2.79 metres to the eaves (As shown on plans: 2623_1; 2; 3; 4; 5; 6 received 21.05.2026)
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26/00621/CLD Awaiting decision
58 Templedene Avenue Staines-upon-Thames TW18 1LW
Certificate of Lawfulness for existing use or development of a loft conversion to include hip to gable extension, the installation of a rear facing dormer and 2 no. roof lights within the front roof slope.
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21/00919/CPD Granted
4 Ash Grove Staines-upon-Thames TW18 1JD
Certificate of Lawfulness for the proposed development of loft alterations to include a hip to gable alteration, a rear facing dormer with Juliet Balcony, 3 no. roof lights within the front roof slope.
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26/00167/FUL Awaiting decision
135 And 137 Brightside Avenue Staines-upon-Thames TW18 1NH
Retrospective application for retention of roof extension including raised ridge height, rear facing dormers and 6 no roof lights on front roof plane. Part two storey part single storey side extension and single storey front and rear extension to 137 Brightside Avenue.
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26/00276/CPD Awaiting decision
20 Ash Grove Staines-upon-Thames TW18 1JD
Certificate of lawfulness for proposed use of dwellinghouse (Use Class C3a) as Children's Home for up 3 no. adults.
Other lawful development applications
In Spelthorne
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26/00604/CPD Granted
13 Lucie Avenue Ashford TW15 2BH
Certificate of lawfulness for proposed rear dormer loft conversion with 3 front roof windows
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26/00585/CPD Granted
55 Gordon Close Staines-upon-Thames TW18 1AP
Certificate of lawfulness for proposed dormer in rear roof and hip to gable extension and two rooflights within the front roof slope
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26/00563/CPD Granted
141 Gaston Way Shepperton TW17 8ET
Certificate of lawfulness for loft conversion with rear flat roof dormer
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26/00787/CPD Awaiting decision
91 Metcalf Road Ashford TW15 1HB
Certificate of Lawfulness for the proposed erection of a front porch.
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26/00531/CPD Granted
197 Green Lane Shepperton TW17 8DY
Certificate of Lawfulness for proposed loft conversion with a hip to gable roof alteration and a rear dormer with two roof windows to the front elevation