23 Cowley Avenue Chertsey Surrey KT16 9JH Data via plota.co.uk

RU.26/0821 REGISTERED

Proposal

Two Storey side to rear extension and single storey front extension Data via plota.co.uk

View original council record ↗Last checked

Application progress

Received
8 Jul 2026
Decision
Expected by 2 Sept 2026

This application is under consideration - no decision has been issued yet. Plota predicted a decision around 14 Sept 2026; it is now day 68.

Site constraints 2

Flood zone 2, rivers and sea
Medium chance: between a 1 in 100 and 1 in 1,000 annual chance from rivers, or 1 in 200 to 1 in 1,000 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
Also on the record
Inside the Chertsey built-up area.
Not affected
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
Runnymede
Postcode
KT16 9JH
Received
8 Jul 2026
Validated
8 Jul 2026
Case officer
Show

Decision outlook

Day 68, past the statutory target. 87% of full applications in Runnymede are decided within thirteen weeks, which runs to 7 Oct 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 22 Aug 2026.

Day 6812 days past the 56-day target
61%decided within 8 weeks
87%approved
54,643decided in the last year

Plota live figures for full applications decided across the UK in the last twelve months, from validation; too few recent full applications in Runnymede to go on. Runnymede decision record →

Runnymede
Planning Authority Score
5.2/10
Average
#140 of 296 councils
Relevant to this application:
Householder decisions

Runnymede ranks #108 out of 296 councils for householder decision speed. Householder applications are slightly less likely to be approved here (89%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Runnymede decision statistics
Based on MHCLG data, the year to March 2026
83%
Overall approval rate
Below avg (87%) #242 of 296
89%
Householder approved
Below avg (90%) #208 of 296
72%
Decided in 8 weeks
Above avg (63%) #108 of 296
36%
Extended time limit
Below avg (41%) #113 of 296
66%
Minor dwellings approved
74 decided (1-9 homes)
82%
Major dwellings approved
11 decided (10+ homes)
55%
Change of use approved
11 decided
661
Total decisions
110 refused in the year to March 2026