Flat Conversion approval rate in Cardiff

Cardiff approved 89.3% of flat conversion applications, based on 28 decisions analysed.

Last updated: August 2026

89.3%

flat conversion approval rate

Flat Conversion decisions

Approved

Refused

82.4%

Cardiff overall

Flat Conversion applications are approved more often than the Cardiff average (82.4%), suggesting the council is relatively receptive to these projects.

How flat conversion compares in Cardiff

Flat Conversion (28 decided)

89.3%

Cardiff all applications (5,184 decided)

82.4%

Planning a flat conversion in Cardiff?

89.3% 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 flat conversion approval rate
✓ Nearest comparable flat conversion decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

Free planning check for Cardiff →