Planning application
42A SYON LANE, ISLEWORTH, TW7 5NQ
Works: New dwelling Several homes
Read from the description, not a valuation. How we read the register
Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.
Proposal
Certificate of lawfulness existing for the continued use as two flats
As published by the council, reference P/2023/0674
Application record
- Reference
- P/2023/0674
- Type
- Lawful Use Certificate
- Status
- Decided: REFUSED (FULL PLANNING PERMISSION REQUIRED)
- Decision
- REFUSED (FULL PLANNING PERMISSION REQUIRED)
- Received
- 1 Mar 2023
- Validated
- 1 Mar 2023
- Decided
- 11 Apr 2023
- Ward
- Osterley & Spring Grove
- Decision by
- Delegated
- Postcode
- TW7 5NQ
Timeline
Dates from the published record
-
1 Mar 2023
Received by Hounslow
-
11 Apr 2023
Decision issued: REFUSED (FULL PLANNING PERMISSION REQUIRED)
-
23 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
10 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat this refusal means
Hounslow refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 500 metres
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850-852 GREAT WEST ROAD, ISLEWORTH, TW7 5NG
Erection of part single storey rear extensions to Flats B at both properties .
Refused Full applications New dwelling Extension 5 docsSmall domestic -
4 Otterburn Gardens, Isleworth, TW7 5JJ
Formation of a vehicular access to the existing site.
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4 Otterburn Gardens, Isleworth, TW7 5JJ
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Erection of a rear roof extension with hip to gable conversion and three front roof windows.
Awaiting decision Full applications Extension Loft or dormer +1 8 docs -
88 Syon Lane, Isleworth, TW7 5NQ
Certificate of lawfulness for proposed rear roof extension with hip to gable conversion and two front roof windows, and erection of a detached single storey outbuilding
Granted Lawful development Extension Loft or dormer +1 4 docsSmall domestic -
88 Syon Lane, Isleworth, TW7 5NQ
Ground floor rear extension 6.00 metres deep, maximum height of 3.20 metres, 3.00 metres high to the eaves
Granted Prior approval Extension 4 docs -
851-853 Great West Road, Isleworth, TW7 5PD
76% historically approved · decision due ~17 Sep
Erection of a single storey rear extension
Awaiting decision Householder Extension 5 docsSmall domestic
Other lawful development applications
In Hounslow
-
P/2026/2033 Granted
3 Benedict Drive, Feltham, TW14 8JH
Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion with windows to the front and side of the house.
-
P/2026/2027 Granted
115 Northumberland Crescent, Feltham, TW14 9SP
Certificate of lawfulness for the proposed erection of a rear roof extension and windows to the front of the house.
-
P/2026/2009 Granted
3 Brainton Avenue, Feltham, TW14 0AZ
Certificate of lawfulness for the proposed erection of a rear roof extension and Juliette balcony with front roof windows to the house.
-
P/2026/2014 Granted
82 Sussex Avenue, Isleworth, TW7 6LB
Certificate of lawfulness for the proposed erection of a rear roof extension, a porch to the front of the house, and a front roof window.
-
P/2026/2473 Awaiting decision
16 Somerset Waye, Hounslow, TW5 9HG
Certificate of lawfulness for the proposed erection of a rear roof extension with two roof windows to the front and alterations to the existing side roof from flat roof to pitched roof.