Planning application
P/2026/1742
66 Whitestile Road, Brentford, TW8 9NL
Proposal
Certificate of lawfulness for proposed erection of a rear roof extension with a Juliet balcony and windows to match.
As published by the council, reference P/2026/1742
Timeline
Dates from the published record
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11 Jun 2026
Received by Hounslow
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21 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/2026/1951 Awaiting decision
66 Whitestile Road, Brentford, TW8 9NL
Erection of a single storey rear extension to the house. Following the demolition of the rear extension.
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262736CONS Awaiting decision
66 Whitestile Road Brentford TW8 9NL
Erection of a single storey rear extension to the house. Following the demolition of the rear extension ( out of borough)
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262736CONS Granted
66 Whitestile Road Brentford TW8 9NL
Erection of a single storey rear extension to the house (following the demolition of the rear extension) (Out of Borough Consultation from the London Borough of Hounslow)
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243528VAR Granted
80 Darwin Road Ealing W5 4BH
Minor material amendment (S.73) to vary condition no.2 (approved plans), seeking to allow changes on the ground floor design, in pursuant to planning permission reference 234401FUL dated 21/12/2023 for' Conversion of single family dwellinghouse into 2 self-contained flats; single storey rear/side extension; rear roof extension to main roofslope; roof extension to rear outrigger; and installation of two rooflights to front roofslope'
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250697CPE Awaiting decision
127A Darwin Road Ealing W5 4BB
Continued use of part of a first floor as self-contained flat 1 (Lawful Development Certificate for an Existing Use)
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250714CPE Awaiting decision
127A Darwin Road Ealing W5 4BB
Continued use of part of a first floor as self-contained flat 2 (Lawful Development Certificate for an Existing Use)
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.