5 Idlecombe Road SW17 9TD Data via plota.co.uk

2026/2681 - Certificate of Lawfulness - Proposed REGISTERED

Proposal

Alterations including erection of dormer extension to main rear roof slope and erection of extension above two-storey rear addition. Data via plota.co.uk

View original council record ↗Last checked

Application progress

Received
3 Aug 2026
Decision
Expected by 28 Sept 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision around 18 Sept 2026, from Wandsworth's recent extensions.

Site constraints 2

Air quality management area: Wandsworth 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 Wandsworth 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

Council
Wandsworth
Application type
Certificate of Lawfulness - Proposed
Postcode
SW17 9TD
Received
3 Aug 2026
Validated
3 Aug 2026
Case officer
Show
Applicant
Show
Agent
CJOK Architects

Decision outlook

Day 42 of the 56-day target. Wandsworth usually decides extensions by day 46.

Day 4214 days to the 56-day target
82%decided within 8 weeks
89%approved
800decided in the last year

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

Consultation & key dates

Statutory expiry
18 Sept 2026
Wandsworth
Planning Authority Score
4.8/10
Below average
#164 of 296 councils
Relevant to this application:
Householder decisions

Wandsworth ranks #172 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (92%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Wandsworth decision statistics
Based on MHCLG data, the year to March 2026
90%
Overall approval rate
Above avg (87%) #120 of 296
92%
Householder approved
Above avg (90%) #168 of 296
62%
Decided in 8 weeks
Below avg (63%) #172 of 296
37%
Extended time limit
Below avg (41%) #124 of 296
89%
Minor dwellings approved
680 decided (1-9 homes)
81%
Major dwellings approved
16 decided (10+ homes)
72%
Change of use approved
36 decided
2,062
Total decisions
206 refused in the year to March 2026