Annex approval rate in Caerphilly
Caerphilly approved 71.8% of annex applications, based on 71 decisions analysed.
Last updated: June 2026
71.8%
annex approval rate
71
Annex decisions
51
Approved
20
Refused
78.4%
Caerphilly overall
Annex applications are refused more often than the Caerphilly average (78.4%), suggesting the council scrutinises these projects more closely.
How annex compares in Caerphilly
Annex
71.8%
Caerphilly all applications
78.4%
Planning a annex in Caerphilly?
71.8% 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 annex approval rate
✓ Nearest comparable annex decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Caerphilly →
✓ Nearest comparable annex decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Caerphilly
76.9%
80.8%
75.5%
77.6%
74.8%
72.1%
86.3%
72.4%
73.6%
51.9%
73.7%
92.3%
72.4%
61.5%
80.0%