4, Trehern Road, London, SW14 8PD Data via plota.co.uk

PA26/2469 - Householder Application Approved

Proposal

Rear roof slope dormer and loft conversion. Rooflights to front roof slope. Ground floor wrap around extension incorporating a pitched/gable end roof. Data via plota.co.uk

View original council record ↗Last checked

Application progress

Received
15 Jul 2026
Validated
16 Jul 2026
Consultation
24 Jul 2026
Approved
20 Aug 2026

Approved on 20 Aug 2026 · Delegated Decision · Last checked 21 Aug 2026

Site constraints 4

Queen's Road (Mortlake) conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
Air quality management area: Richmond 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
1 listed building within 150 m; Inside the Richmond upon Thames 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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Important details

Application type
Householder Application
Postcode
SW14 8PD
Received
15 Jul 2026
Validated
16 Jul 2026
Ward
East Sheen Ward [EST]
Case officer
Show
Target decision
9 Sept 2026
Decision
Granted Permission
Decision date
20 Aug 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Property Design and Draw Ltd

How this decision compares

Decided in 35 days from validation, 13 days faster than Richmond upon Thames's median of 48 for extensions. Approved, as 87% of extensions here are.

79%decided within 8 weeks
87%approved
1,012decided in the last year

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

Consultation & key dates

Alt. reference
PP-15065574
Comments by
14 Aug 2026
Site or press notice
24 Jul 2026
Statutory expiry
6 Aug 2026
Richmond upon Thames
Planning Authority Score
4.4/10
Below average
#182 of 296 councils
Relevant to this application:
Householder decisions

Richmond upon Thames ranks #130 out of 296 councils for householder decision speed. Richmond upon Thames is also one of the strictest councils - it refuses more householder applications than almost any other, with only 82% approved vs 90% nationally.

One of the strictest councils
only 82% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Richmond upon Thames decision statistics
Based on MHCLG data, the year to March 2026
81%
Overall approval rate
Below avg (87%) #257 of 296
82%
Householder approved
Below avg (90%) #268 of 296
69%
Decided in 8 weeks
Above avg (63%) #130 of 296
35%
Extended time limit
Below avg (41%) #104 of 296
68%
Minor dwellings approved
181 decided (1-9 homes)
100%
Major dwellings approved
3 decided (10+ homes)
47%
Change of use approved
17 decided
1,888
Total decisions
358 refused in the year to March 2026