28 Rosemary Avenue,Hounslow,TW4 7JF Data via plota.co.uk

Approved P/2026/1391 - Lawful Development Certificate (Proposed)
Extensions & alterations
Council
Hounslow 2.1/10
Date received
8 May 2026
Date validated
26 May 2026
Decision date
6 Jul 2026
Postcode
TW4 7JF
Type
Lawful Development Certificate (Proposed)

Description

Certificate of lawfulness for the proposed erection of a rear roof extension with hip to gable conversion and front roof windows to the house. Data via plota.co.uk

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Last checked

How this decision compares

Decided in 41 days from validation, 9 days faster than Hounslow's median of 50 for extensions. Approved, as 83% of extensions here are.

82%decided within 8 weeks
83%approved
767decided in the last year

Plota live figures for extensions decided by Hounslow in the last twelve months, from validation. Hounslow decision record →

Site constraints 3

Article 4 direction
Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Air quality management area: Hounslow AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Also on the record
Inside the Hounslow built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Other new applications on this street

24 Aug 2026Pending

104 Rosemary Avenue,Hounslow,TW4 7JG

Ground floor rear extension 6.00 metres deep, maximum height 3.25 metres, 3.00 m...

PA/2026/2415
20 Apr 2026Withdrawn

49 Rosemary Avenue,Hounslow,TW4 7JQ

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change of use from a single family dwellinghouse (Use Class C3a) to a house in ...

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2 Sept 2026Pending

12 Legrace Avenue,Hounslow,TW4 7RS

Erection of a two storey side extension, single storey rear extension and part f...

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24 Aug 2026Pending

104 Rosemary Avenue,Hounslow,TW4 7JG

Ground floor rear extension 6.00 metres deep, maximum height 3.25 metres, 3.00 m...

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19 Aug 2026Pending

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Ground floor rear extension 6.00 metres deep, maximum height of 3.50 metres, 3.0...

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13 Apr 2026Pending

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Historical activity at this location

12 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
21A Rosemary Avenue, Hounslow, TW4 7JQ
Erection of a first floor side extension with hipped roof to the flat with alterations in…
P/2025/2802
2024 Approved
36 Rosemary Avenue, Hounslow, TW4 7JF
Certificate of lawfulness for the erection of a single storey outbuilding in the rear gar…
P/2024/3694
2020 Approved
26 ROSEMARY AVENUE, HOUNSLOW, TW4 7JF
Ground floor rear extension 6 metres deep, maximum height of 3 metres, 2.75 metres high t…
PA/2020/2203
2020 Approved
26 ROSEMARY AVENUE, HOUNSLOW, TW4 7JF
Certificate of lawfulness for hip to gable and rear roof extension with two front roof wi…
P/2020/2180
2020
26 ROSEMARY AVENUE HOUNSLOW TW4 7JF
Ground floor rear extension 6.00 metres deep, maximum height of 3.20 metres, 3.00 metres…
PA/2020/2292
2018 Approved
25 ROSEMARY AVENUE, HOUNSLOW, LONDON, TW4 7JQ
Demolition of existing outbuilding and erection of a two-storey side extension and a part…
P/2018/3375
2018 Approved
25 ROSEMARY AVENUE, HOUNSLOW, TW4 7JQ
Certificate of Lawfulness for erection of a rear roof extension with hip to gable convers…
P/2018/3378
2018 Withdrawn
30 ROSEMARY AVENUE HOUNSLOW LONDON TW4 7JF
Certificate of Lawfulness for erection of a rear roof extension with hip to gable convers…
P/2018/0241
2017 Approved
52 ROSEMARY AVENUE HOUNSLOW TW4 7JF
Erection of a part first rear extension and rear roof extension to the house
P/2017/2517
2017 Approved
52 ROSEMARY AVENUE HOUNSLOW TW4 7JF
Certificate of lawfulness for the erection of a single storey detached outbuilding to the…
P/2017/2509
2016 Approved
50 ROSEMARY AVENUE HOUNSLOW LONDON TW4 7JF
Ground floor rear extension 6m deep, 3m high to the eaves with the maximum height of 4m.
PA/2016/2571
2016 Refused
9 ROSEMARY AVENUE HOUNSLOW TW4 7JQ
Ground floor rear extension 5.5 metres deep, maximum height of 2.835 metres, 2.28 metres…
PA/2016/2387
Hounslow
Planning Authority Score
2.1/10
Poor
#268 of 296 councils
Relevant to this application:
Householder decisions

Hounslow is slower than most councils at deciding householder applications, ranking #203 out of 296. 47% of applications have the time limit extended, above the 41% national average. Hounslow is also one of the strictest councils - it refuses more householder applications than almost any other, with only 75% approved vs 90% nationally.

One of the strictest councils
only 75% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Hounslow decision statistics
Based on MHCLG data, the year to March 2026
71%
Overall approval rate
Below avg (87%) #294 of 296
75%
Householder approved
Below avg (90%) #293 of 296
56%
Decided in 8 weeks
Below avg (63%) #203 of 296
47%
Extended time limit
Above avg (41%) #208 of 296
38%
Minor dwellings approved
82 decided (1-9 homes)
93%
Major dwellings approved
14 decided (10+ homes)
29%
Change of use approved
72 decided
1,191
Total decisions
340 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings