Planning application
P/2026/1490
76 Argyle Avenue, Hounslow, TW3 2LN
Proposal
Certificate of Lawfulness for the proposed erection of a rear roof extension, including a hip-to-gable roof conversion and installation of three front roof windows, erection of a front porch, and erection of a single-storey detached outbuilding in the rear garden.
As published by the council, reference P/2026/1490
Timeline
Dates from the published record
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18 May 2026
Received by Hounslow
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3 Jun 2026
Validated
Checked as complete and ready for consideration.
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15 Jul 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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PA/2026/1491 Granted
76 Argyle Avenue, Hounslow, TW3 2LN
Ground floor rear extension 6.00 metres deep, maximum height of 3.00 metres, 2.82 metres high to the eaves
-
PA/2023/0680 Granted
80 ARGYLE AVENUE, HOUNSLOW, TW3 2LN
Ground floor rear extension 6.00 metres deep, maximum height 2.95 metres, 2.95 metres high to the eaves
-
P/2026/1278 Decided
72 St Stephens Road, Hounslow, TW3 2BN
Change of use from the existing single residential house (C3) to house in multiple occupation (Sui Generis) for ten occupants.
-
21/1772/HOT Granted
58 Wills Crescent Whitton Hounslow TW3 2JB
single storey side and rear extension following removal of existing side garage
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P/2026/1730 Granted
55 St Stephens Road, Hounslow, TW3 2BJ
Works to trees in a Conservation Area. Lawson Cypress. Reduce height by approximately 2 metres to a final height of approximately 4 metres and trim all sides to create a neat, rounded shape.
-
P/2024/3905 Withdrawn
77 St Stephens Road, Hounslow, TW3 2BJ
Removal of chimney stack
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.
-
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.
-
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.
-
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.