Planning application
40 Southcote Avenue, Feltham, TW13 4EG
Works: Extension Loft or dormer Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion, Juliet balcony and front roof window to the house.
As published by the council, reference P/2025/3222
Application record
- Reference
- P/2025/3222
- Type
- Lawful Development Certificate (Proposed)
- Status
- Decided: GRANT
- Decision
- GRANT
- Received
- 24 Oct 2025
- Validated
- 24 Oct 2025
- Decided
- 2 Dec 2025
- Ward
- Feltham West
- Postcode
- TW13 4EG
Timeline
Dates from the published record
-
24 Oct 2025
Received by Hounslow
-
2 Dec 2025
Decision issued: GRANT
-
12 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
13 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 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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27 Cravan Avenue, Feltham, TW13 4EE
Ground floor rear extension 6.00 metres deep, maximum height of 3.50 metres, 3.00 metres high to the eaves
Refused Prior approval Extension 7 docs -
21 SOUTHCOTE AVENUE, FELTHAM, TW13 4EQ
Certificate of lawfulness for erection of front porch to the house
Granted Lawful development Extension 6 docsSmall domestic -
21 SOUTHCOTE AVENUE, FELTHAM, TW13 4EQ
Ground floor rear extension 4.00 meters deep, maximum height of 3.05 metres, 2.90 metres high to the eaves
Refused Prior approval Extension 6 docs -
68 Southcote Avenue, Feltham, TW13 4EG
Ground floor rear extension 6.00 metres deep, maximum height 3.00, 3.00 metres high to the eaves.
Granted Prior approval Extension 9 docs -
68 Southcote Avenue, Feltham, TW13 4EG
Certificate of lawfulness for the proposed erection of a rear roof extension with front roof windows to the house.
Granted Lawful development Extension Windows or glazing 9 docs -
68 Southcote Avenue, Feltham, TW13 4EG
65% historically approved · decision due ~20 Oct
Conversion of a single house into 5 bedroom House in Multiple Occupation
Awaiting decision Full applications 10 docs
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.