Planning application
P/2026/1635
99 Basildene Road, Hounslow, TW4 7LX
Proposal
Certificate of Lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and front roof windows to the house.
As published by the council, reference P/2026/1635
Timeline
Dates from the published record
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27 May 2026
Received by Hounslow
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5 Jun 2026
Validated
Checked as complete and ready for consideration.
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23 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/2026/1584 Granted
99 Basildene Road, Hounslow, TW4 7LX
Ground floor rear extension 6.00 metres deep, maximum height of 3.30 metres, 3.00 metres high to the eaves
-
P/2026/1109 Awaiting decision
92 Basildene Road, Hounslow, TW4 7LU
Erection of a two storey house fronting Marnell Way following the demolition of the garage
-
P/2022/3632 Refused
24 MARNELL WAY, HOUNSLOW, TW4 7LY
Certificate of lawfulness for the erection of a single storey detached outbuilding to the rear of the house
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P/2022/2421 Refused
44 CLIFFORD ROAD, HOUNSLOW, TW4 7LT
Certificate of lawfulness for the existing use of the property as two-self contained flats
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PA/2023/0886 Withdrawn
21 CLIFFORD ROAD, HOUNSLOW, TW4 7LS
Ground floor rear extension 6.00 meters deep, maximum height of 3.00 metres, 2.85 metres high to the eaves
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P/2026/1702 Awaiting decision
64 Clifford Road, Hounslow, TW4 7LR
Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and three front windows.
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.
-
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.