Flat Conversion approval rate in Cardiff
Cardiff approved 90.9% of flat conversion applications, based on 22 decisions analysed.
Last updated: March 2026
90.9%
flat conversion approval rate
22
Flat Conversion decisions
20
Approved
2
Refused
81.9%
Cardiff overall
Flat Conversion applications are approved more often than the Cardiff average (81.9%), suggesting the council is relatively receptive to these projects.
How flat conversion compares in Cardiff
Flat Conversion
90.9%
Cardiff all applications
81.9%
Planning a flat conversion in Cardiff?
90.9% get approved — but the odds vary by street. Your Pro Report 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
Get Cardiff Pro Report — £79
✓ Nearest comparable flat conversion decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Cardiff
66.8%
63.0%
67.1%
48.8%
92.3%
70.1%
59.3%
77.4%
91.7%
78.3%
94.4%
86.7%
80.0%