Planning application
21/01046/CPD
6 Templedene Avenue Staines-upon-Thames TW18 1LP
Proposal
Certificate of Lawfulness for proposed development of a single storey rear extension following the demolition of the existing conservatory.
As published by the council, reference 21/01046/CPD
Timeline
Dates from the published record
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25 Jun 2021
Received by Spelthorne
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9 Aug 2021
Decision issued: Grant Cert Lawful Prop Use/Dev
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3 Aug 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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26/00515/CPD Granted
1 Pavilion Gardens Staines-upon-Thames TW18 1LS
Certificate of Proposed Development for a hip to gable loft conversion with rear dormer and three roof lights on front roof slope
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21/00965/HOU Granted
3 Hazel Grove Staines-upon-Thames TW18 1JJ
Erection of a single storey rear extension.
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26/00586/CPD Awaiting decision
36 Hurstdene Avenue Staines-upon-Thames TW18 1JQ
Certificate of Lawfulness for the proposed development of a loft conversion to include hip to gable extension, the installation of a rear facing dormer with Juliet balcony and 2 no. roof light within the front roof slope.
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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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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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26/00200/CLD Awaiting decision
73 Nursery Gardens Staines-upon-Thames TW18 1EL
Certificate of Lawfulness to establish the lawful use of the property is as a House in Multiple Occupation (Use Class C4) for up to six occupants. As shown on site location plan and block plan no EX-1003 and Pre-Existing Floor Plans (Page 01 of 02) and Existing Floor Plans (Page 02 of 02) received 27.02.2026.
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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26/00571/CPD Granted
21 Arnold Road Laleham Staines-upon-Thames TW18 1LY
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.)
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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.