Loft Conversion approval rate in Cardiff
Cardiff approved 70.1% of loft conversion applications, based on 164 decisions analysed.
Last updated: March 2026
70.1%
loft conversion approval rate
164
Loft Conversion decisions
115
Approved
49
Refused
81.9%
Cardiff overall
Loft Conversion applications are refused more often than the Cardiff average (81.9%), suggesting the council scrutinises these projects more closely.
How loft conversion compares in Cardiff
Loft Conversion
70.1%
Cardiff all applications
81.9%
Planning a loft conversion in Cardiff?
70.1% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.
✓ Your ward's loft conversion approval rate
✓ Nearest comparable loft conversion decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Get Cardiff Pro Report — £79
✓ Nearest comparable loft 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%
59.3%
77.4%
91.7%
78.3%
90.9%
94.4%
86.7%
80.0%