Extension (General) approval rate in Cardiff

Cardiff approved 67.9% of extension (general) applications, based on 315 decisions analysed.

Last updated: August 2026

67.9%

extension (general) approval rate

315

Extension (General) decisions

214

Approved

101

Refused

82.4%

Cardiff overall

Extension (General) applications are refused more often than the Cardiff average (82.4%), suggesting the council scrutinises these projects more closely.

How extension (general) compares in Cardiff

Extension (General) (315 decided)

67.9%

Cardiff all applications (5,184 decided)

82.4%

Planning a extension (general) in Cardiff?

67.9% get approved, but the odds vary by street. Your Full Planning Analysis shows exactly what gets approved and refused near your property.

✓ Your ward's extension (general) approval rate
✓ Nearest comparable extension (general) decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

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