Planning application
P/2026/1414
4 Riverside Walk, Isleworth, TW7 6HW
Proposal
Certificate of lawfulness for the proposed erection of a detached single storey outbuilding to the rear of the house.
As published by the council, reference P/2026/1414
Timeline
Dates from the published record
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11 May 2026
Received by Hounslow
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11 Jun 2026
Validated
Checked as complete and ready for consideration.
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26 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Hounslow for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
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/2026/2015 Awaiting decision
55 St Johns Lodge, Flat 2,Woodlands Road,Isleworth,TW7 6JT
Works to trees in a conservation area ;To reduce height by approximately 10m and reduce width by approximately 8m.
-
P/2021/2635 Granted
69 WOODLAND GARDENS, ISLEWORTH, TW7 6LW
Certificate of Lawfulness for the proposed erection of a single storey rear extension to the house
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P/2024/3197 Granted
54 Woodlands Road, Isleworth, TW7 6JU
Certificate of Lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and two front roof windows
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P/2021/1966 Withdrawn
15 HOWARD ROAD, ISLEWORTH, TW7 6JL
Loft conversion
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P/2021/2309 Granted
25 WOODLANDS ROAD, ISLEWORTH, TW7 6NR
Tree no.1 on sketch: Laurel bush/tree - remove tree/take down to stump; Tree no.2 on sketch: Unknown dead tree - remove tree/take down to stump; Tree no.3 on sketch: Laurel bush/tree - remove tree/take down to stump
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P/2026/1769 Awaiting decision
27 Woodlands Grove, Isleworth, TW7 6NS
Erection of a single storey rear extension.
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.