Planning application
P/2026/1209
6 Alton Close, Isleworth, TW7 6AL
Proposal
Certificate of lawfulness for the proposed erection of a single storey detached outbuilding for use as an office and a front porch extension to the house.
As published by the council, reference P/2026/1209
Timeline
Dates from the published record
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20 Apr 2026
Received by Hounslow
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27 Apr 2026
Validated
Checked as complete and ready for consideration.
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26 Jun 2026
Decision issued: GRANT
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26 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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P/2025/0931 Withdrawn
6 Alton Close, Isleworth, TW7 6AL
Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and front roof windows to the house.
-
P/2026/1357 Granted
Land Rear of 26-48 And 34 Amhurst Gardens, Isleworth TW7 6AJ
Details of Condition 23 (Land Quality - Preliminary Risk Assessment) and 24 (Land Quality - Intrusive Site Investigation) of planning permission P/2025/0430 dated 28/11/2025 for erection of eight houses with an associated access road, private parking, amenity space, landscaping, cycle and bin stores following the demolition of 34 Amhurst Gardens
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P/2026/2173 Awaiting decision
34 Amhurst Gardens, Isleworth, TW7 6AJ
Details of both hard and soft landscape works, boundary treatment and stage 1 written scheme of investigation submitted pursuant to conditions 5,9 and 22 of permission P/2025/0430 dated 28/11/25 for the erection of eight houses with an associated access road, private parking, amenity space, landscaping, cycle and bin stores following the demolition of 34 Amhurst Gardens.
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P/2026/1581 Awaiting decision
Land Rear of 26-48 and 34 Amhurst Gardens, Isleworth TW7 6AJ
Details of Conditions 3 (materials), 10 (Car parking details), 12 (Electric vehicle charging points), 15 (Waste and recycling) and 18 (Sustainable materials) submitted pursuant to planning permission P/2025/0430 dated 28/11/2025 for erection of eight houses with an associated access road, private parking, amenity space, landscaping, cycle and bin stores following the demolition of 34 Amhurst Gardens
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P/2026/1441 Awaiting decision
Block D and K Primrose Place,Isleworth,London,TW7 5BA
Certificate of lawfulness for the proposed replacement of the external cladding materials to Blocks D and K.
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P/2024/3261 Granted
419 London Road, Isleworth, TW7 5AQ
Erection of a two storey side and single storey rear extension with three roof lights.
Other lawful development applications
In Hounslow
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P/2026/2219 Awaiting decision
Great West House,993 Great West Road,Brentford,TW8 9DF
Certificate of lawfulness for the installation of two electricity substations.
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P/2026/1626 Granted
2 Oak Avenue, Hounslow, TW5 9EB
Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and the addition of one front roof light.
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P/2026/2168 Awaiting decision
49 Durham Road, Feltham, TW14 0AG
Certificate of lawfulness for the proposed erection of a detached outbuilding in the rear garden.
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P/2026/1448 Granted
13 Orchard Avenue, Hounslow, TW5 0DU
Certificate of lawfulness for the proposed erection of a rear roof extension with a hip to gable conversion to the house.
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P/2026/1682 Granted
133 Swan Road, Feltham, TW13 6LT
Certificate of lawfulness for the proposed erection of a rear roof extension with front roof windows to the house.