Outbuilding approval rate in Cardiff
Cardiff approved 77.1% of outbuilding applications, based on 96 decisions analysed.
Last updated: August 2026
77.1%
outbuilding approval rate
96
Outbuilding decisions
74
Approved
22
Refused
82.4%
Cardiff overall
Outbuilding applications are refused more often than the Cardiff average (82.4%), suggesting the council scrutinises these projects more closely.
How outbuilding compares in Cardiff
Outbuilding
77.1%
Cardiff all applications
82.4%
Planning a outbuilding in Cardiff?
77.1% 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 outbuilding approval rate
✓ Nearest comparable outbuilding decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Cardiff →
✓ Nearest comparable outbuilding decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Cardiff
72.8%
68.7%
67.9%
84.0%
72.2%
72.1%
52.4%
84.0%
80.0%
86.1%
78.1%
89.3%
84.6%
75.0%