Side Extension approval rate in County Durham
County Durham approved 97.0% of side extension applications, based on 830 decisions analysed.
Last updated: March 2026
97.0%
side extension approval rate
830
Side Extension decisions
805
Approved
25
Refused
95.0%
County Durham overall
Side Extension applications are approved at roughly the same rate as the County Durham average (95.0%).
How side extension compares in County Durham
Side Extension
97.0%
County Durham all applications
95.0%
Planning a side extension in County Durham?
97.0% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.
✓ Your ward's side extension approval rate
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Get County Durham Pro Report — £79
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in County Durham
95.7%
97.8%
95.7%
89.8%
96.2%
95.6%
96.8%
99.6%
74.8%
94.0%
98.6%
95.9%
93.3%
80.0%