Planning application
148 Cardington Square, Hounslow, TW4 6AL
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 proposed for a hip to gable conversion and erection of a rear roof extension with three front roof windows to the house.
As published by the council, reference P/2025/3510
Application record
- Reference
- P/2025/3510
- Type
- Lawful Development Certificate (Proposed)
- Status
- Decided: GRANT
- Decision
- GRANT
- Received
- 21 Nov 2025
- Validated
- 25 Nov 2025
- Decided
- 20 Jan 2026
- Ward
- Hounslow West
- Postcode
- TW4 6AL
Site history
Applications at this address on the Hounslow register
This site has had 2 applications since 2025: 1 approved, 1 refused.
-
P/2025/3681 Refused
148 Cardington Square, Hounslow, TW4 6AL
Erection of a part first floor rear extension to the house.
Timeline
Dates from the published record
-
21 Nov 2025
Received by Hounslow
-
25 Nov 2025
Validated
Checked as complete and ready for consideration.
-
20 Jan 2026
Decision issued: GRANT
-
12 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
8 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 grant of permission means
Hounslow granted permission on 20 January 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. 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
-
148 Cardington Square, Hounslow, TW4 6AL
Erection of a part first floor rear extension to the house.
Refused Householder Extension 10 docsDomestic -
146 Cardington Square, Hounslow, TW4 6AL
Erection of a front porch extension compromising of a cabin vehicle.
Withdrawn Householder Extension 10 docsSmall domestic -
FLAT GROUND FLOOR 18 HINTON AVENUE, HOUNSLOW, TW4 6AR
Formation of a vehicular access to the front of the house
Withdrawn Householder 4 docsDomestic -
53 Barrack Road, Hounslow, TW4 6AN
Erection of a single storey rear extension to the house.
Refused Householder Extension 9 docsSmall domestic -
16 Cardington Square, Hounslow, TW4 6AH
Certificate of lawfulness for proposed hip-to-gable conversion and rear roof extension with two front roof windows. Erection of outbuilding in rear garden for use as garden storage, office and gym.
Granted Lawful development Extension Loft or dormer +1 9 docs -
16 Cardington Square, Hounslow, TW4 6AH
Ground floor rear extension 6.00 metres deep, maximum height 3.00 metres, 2.85 metres high to the eaves.
Granted Prior approval Extension 8 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.