Planning application
P/2026/1883
136 Fernside Avenue, Feltham, TW13 7BW
Proposal
GS850816831 - Certificate of lawfulness proposed for the erection of a single storey rear extension to the house
As published by the council, reference P/2026/1883
Timeline
Dates from the published record
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24 Jun 2026
Received by Hounslow
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16 Jul 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P/2026/1153 Withdrawn
136 Fernside Avenue, Feltham, TW13 7BW
Erection of a single storey side and rear extension to the house.
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P/2021/1865 Granted
189 FERNSIDE AVENUE, FELTHAM, TW13 7BQ
Certificate of Lawfulness for the erection of a hip to gable and rear roof extension with three front roof windows and replacement of flat roof of existing two storey side extension with pitched roof to the house
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P/2025/1829 Awaiting decision
Felthambrook Industrial Estate, Felthambrook Way, Feltham, TW13 7DU
Installation of 1 x illuminated and 2 x non illuminated signage.
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PA/2024/3362 Granted
18 Camrose Avenue, Feltham, TW13 7DA
Ground floor rear extension 4.30 metres deep, maximum height 2.85 metres, 2.70 metres high to the eaves
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P/2026/1554 Awaiting decision
24 Fernside Avenue, Feltham, TW13 7BL
Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion.
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P/2026/1387 Granted
7 Roebuck Close, Feltham, TW13 7DE
Conversion of garage into a habitable room replacing garage door with single window.
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.