Planning application
425 Twickenham Road, Isleworth, TW7 7ES
Works: Extension Small domestic
Read from the description, not a valuation. How we read the register
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 single storey rear extension to the house and a detached single storey outbuilding
As published by the council, reference P/2025/2736
Application record
- Reference
- P/2025/2736
- Type
- Lawful Development Certificate (Proposed)
- Status
- Decided: GRANT
- Decision
- GRANT
- Received
- 10 Sep 2025
- Validated
- 10 Sep 2025
- Decided
- 3 Nov 2025
- Ward
- Isleworth
- Postcode
- TW7 7ES
Timeline
Dates from the published record
-
10 Sep 2025
Received by Hounslow
-
3 Nov 2025
Decision issued: GRANT
-
12 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
9 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
-
425 Twickenham Road, Isleworth, TW7 7ES
Erection of a single storey rear extension and part ground floor part first floor side extension to the house.
Granted Householder Extension 9 docsSmall domestic -
2 LYNTON CLOSE, ISLEWORTH, TW7 7ET
Certificate of Lawfulness for the proposed erection of a rear roof extension incorporating three front roof windows to the house
Granted Lawful development Extension Windows or glazing 7 docs -
403-405 Twickenham Road, Isleworth, TW7 7ES
91% historically approved · decision due ~22 Sep
Variation of conditions 4 (opening times for shop) and 5 (opening times for petrol station) to allow to be rewording of condition 4 to 'the onsite shop shall be permanently open to customers 24 hours' and condition 5 to 'the filling of vehicles with petrol and the associated receipt of payment shall be carried out at the premises 24 hours permanently, with the exception of pumps 1, 2, 3 and 4 which shall not operate between the hours of 11.00pm and 6.00am' of planning permission 01137/403 405/P29 (P/2016/1527) approved 29/06/2016 for the variation of condition 3 to change the opening hours from 07:00 am to 06:00 am following planning permission 01137/403 405/P23 (H/0006/5173) dated 14/12/1983 for erection of petrol service station with car servicing
Awaiting decision Conditions 4 docs -
403-405 Twickenham Road,Isleworth,Hounslow,TW7 7ES
Details of Condition 4 (Waste water) submitted pursuant to planning permission 01137/403-405/P34 (P/2023/1181) dated 05/09/2023 for Demolition of car wash and jet wash machine and the creation of charging zone, erection of EV chargers, erection of canopy, two jet wash bays, sub-station enclosure and associated forecourt works.
Refused Conditions Demolition 4 docs -
58 Lynton Close, Isleworth, TW7 7ET
Certificate of Lawfulness for the proposed erection of a detached outbuilding in the rear garden.
Granted Lawful development 9 docs -
Telephone Box Outside 260 Twickenham Road, Isleworth
Installation of a double sided internally illuminated digital display on the proposed communications hub
Refused Advertising 13 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.