Rear extension approval rate in Caerphilly
Caerphilly approved 80.9% of rear extension applications, based on 993 decisions analysed.
Last updated: October 2026
80.9%
rear extension approval rate
993
Rear extension decisions
803
Approved
190
Refused
76.5%
Caerphilly overall
Rear extension applications are approved more often than the Caerphilly average (76.5%).
How rear extension applications compare in Caerphilly
Rear extension
80.9%
Caerphilly all applications
76.5%
Before you apply in Caerphilly
This page shows the council-wide rate. The free check shows decisions near your property.
✓ Your ward's rear extension approval rate
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Caerphilly →
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Caerphilly and any other published UK council. See the data services →
Other project types in Caerphilly
76.8%
75.9%
77.2%
75.4%
71.0%
86.1%
72.4%
74.2%
53.6%
71.2%
74.6%
92.7%
71.9%
62.1%
81.2%