Planning application
P/2021/2208
14 SIDMOUTH AVENUE, ISLEWORTH, TW7 4DW
Proposal
Certificate of Lawfulness for proposed erection of a rear roof extension incorporating hip to gable conversion and two front roof windows; Alterations to the existing ground floor rear extension comprising of the removal of the existing opens and installation of one new window and French doors to the house
As published by the council, reference P/2021/2208
Timeline
Dates from the published record
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3 Jun 2021
Received by Hounslow
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16 Jul 2021
Decision issued: GRANTED (FULL PLANNING PERMISSION NOT REQUIRED)
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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/2026/1784 Granted
16 Sidmouth Avenue, Isleworth, TW7 4DW
Ground floor rear extension 5.00 metres deep, maximum height of 3.20 metres, 3.00 metres high to the eaves
-
PA/2023/0610 Granted
7 SIDMOUTH AVENUE, ISLEWORTH, TW7 4DW
Ground floor rear extension 4.00 metres deep, maximum height 3.54 metres, 3.00 metres high to the eaves
-
P/2026/2069 Awaiting decision
12 Crawford Close, Isleworth, TW7 4DP
Non material amendment to allow the increase of the width of the single storey side extension from 0.8m to 1.35m of planning permission P/2024/1156 approved 18/06/2024 for the erection of single storey rear, single storey side and part first floor rear extension to the house
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P/2024/3245 Granted
65 Sidmouth Avenue, Isleworth, TW7 4DR
Certificate of Lawfulness for the proposed change of use from Use Class C3(a) to Use Class C3(b).
-
P/2024/3461 Granted
47 Sidmouth Avenue, Isleworth, TW7 4DR
Certificate of Lawfulness for the proposed erection of a single storey rear extension to the house.
-
P/2026/1361 Awaiting decision
Land on London Road to the side of Grove House, 76 Sidmouth Avenue, Isleworth, TW7 4FQ
Installation of one telecommunication Street Hub and removal of associated payphones.
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.