Outbuilding approval rate in Cardiff
Cardiff approved 77.8% of outbuilding applications, based on 81 decisions analysed.
Last updated: June 2026
77.8%
outbuilding approval rate
81
Outbuilding decisions
63
Approved
18
Refused
81.7%
Cardiff overall
Outbuilding applications are refused more often than the Cardiff average (81.7%), suggesting the council scrutinises these projects more closely.
How outbuilding compares in Cardiff
Outbuilding
77.8%
Cardiff all applications
81.7%
Planning a outbuilding in Cardiff?
77.8% 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
67.9%
66.9%
66.6%
85.6%
70.2%
49.4%
65.6%
84.1%
82.8%
78.6%
88.5%
83.3%
71.4%
77.8%