Planning application
P/2026/1913
121 High Street, Hounslow, TW3 1QL
Proposal
Certificate of lawfulness for the material commencement of building operations (implementation of planning permission 00610/121/P7 (P/2009/2786) dated 06/01/2010 for the erection of a second and third floor extension to create two self contained flats.
As published by the council, reference P/2026/1913
Timeline
Dates from the published record
-
29 Jun 2026
Received by Hounslow
-
2 Jul 2026
Validated
Checked as complete and ready for consideration.
-
26 Jul 2026
Added to PlanIndex
-
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
-
P/2026/1955 Awaiting decision
147-161 High Street, Hounslow, TW3 1QL
Details of conditions 4a to g (materials), 6 (construction logistics plan) and 11 (cycle storage) submitted pursuant to planning permission P/2025/3543 approved 07/04/2026 for the erection of a part third floor front extension to provide four additional flats and a part second floor rear extension to provide two additional flats, with associated landscaping, cycle parking and refuse storage.
-
P/2021/2029 Granted
PHARMACIA HOUSE 1 PRINCE REGENT ROAD, HOUNSLOW, TW3 1NE
Conversion of the ground floor into three self contained flats
-
P/2021/1888 Granted
1 PRINCE REGENT ROAD, HOUNSLOW, TW3 1NE
Details of Condition 6a (energy strategy) submitted pursuant of planning permission 00896/B/P1 dated 22/02/2019 for erection of a six storey building comprising nine flats (Two one-bedroom, four two-bedroom & three three-bedroom) and associated car parking, cycle parking and refuse storage.
-
P/2025/0068 Withdrawn
122 High Street,Hounslow,TW3 1NA
Alterations to the existing shopfront and the erection of a first floor rear extension with the installation of an external kitchen extractor on the rear elevation.
-
P/2026/1882 Awaiting decision
84 High Street, Hounslow, TW3 1NH
Details of Archaeological Evaluation and Preliminary Environmental Risk Assessment submitted pursuant to conditions 12 and 13 of permission P/2025/1072 dated 21/07/2025 for erection of a five storey building compromising of four self contained flats, retail storage and rain garden on the first floor with associated cycle storage and refuse storage following the demolition of the existing two storey building.
-
P/2023/0320 Refused
84 HIGH STREET, HOUNSLOW, TW3 1NH
Erection of a six storey structure comprising of a retail unit and an office/storage space with refuse and cycle storage at ground floor level and the creation of three, two bedroom apartments and one, four bedroom apartment incorporating a first floor courtyard roof garden for private amenity space following the demolition of a two storey retail storage structure
Other lawful development applications
In Hounslow
-
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.
-
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.
-
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.
-
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.
-
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.