Rear Extension approval rate in Caerphilly
Caerphilly approved 80.8% of rear extension applications, based on 958 decisions analysed.
Last updated: June 2026
80.8%
rear extension approval rate
958
Rear Extension decisions
774
Approved
184
Refused
78.4%
Caerphilly overall
Rear Extension applications are approved more often than the Caerphilly average (78.4%), suggesting the council is relatively receptive to these projects.
How rear extension compares in Caerphilly
Rear Extension
80.8%
Caerphilly all applications
78.4%
Planning a rear extension in Caerphilly?
80.8% 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 rear extension approval rate
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
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Free planning check for Caerphilly →
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Caerphilly
76.9%
75.5%
77.6%
74.8%
72.1%
86.3%
72.4%
73.6%
51.9%
71.8%
73.7%
92.3%
72.4%
61.5%
80.0%