Annex approval rate in Cornwall
Cornwall approved 97.7% of annex applications, based on 221 decisions analysed.
Last updated: March 2026
97.7%
annex approval rate
221
Annex decisions
216
Approved
5
Refused
93.9%
Cornwall overall
Annex applications are approved more often than the Cornwall average (93.9%), suggesting the council is relatively receptive to these projects.
How annex compares in Cornwall
Annex
97.7%
Cornwall all applications
93.9%
Planning a annex in Cornwall?
97.7% get approved — but the odds vary by street. Your Pro Report 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
Get Cornwall Pro Report — £79
✓ Nearest comparable annex decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Cornwall
96.6%
93.0%
96.6%
97.8%
83.0%
98.1%
98.9%
97.0%
92.4%
96.4%
95.7%
100.0%
88.2%
85.7%