Rear Extension approval rate in County Durham
County Durham approved 97.7% of rear extension applications, based on 1,591 decisions analysed.
Last updated: September 2026
97.7%
rear extension approval rate
1,591
Rear Extension decisions
1,555
Approved
36
Refused
94.0%
County Durham overall
Rear Extension applications are approved more often than the County Durham average (94.0%), suggesting the council is relatively receptive to these projects.
How rear extension compares in County Durham
Rear Extension
97.7%
County Durham all applications
94.0%
Planning a rear extension in County Durham?
97.7% 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
✓ PDF report for your architect
Free planning check for County Durham →
✓ 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 County Durham and any other published UK council — see the data services →
Other project types in County Durham
95.7%
95.6%
97.1%
89.5%
95.8%
95.9%
97.1%
98.9%
73.9%
94.7%
98.7%
95.3%
94.6%
78.3%