Side Extension approval rate in Darlington
Darlington approved 95.2% of side extension applications, based on 147 decisions analysed.
Last updated: March 2026
95.2%
side extension approval rate
147
Side Extension decisions
140
Approved
7
Refused
91.6%
Darlington overall
Side Extension applications are approved more often than the Darlington average (91.6%), suggesting the council is relatively receptive to these projects.
How side extension compares in Darlington
Side Extension
95.2%
Darlington all applications
91.6%
Planning a side extension in Darlington?
95.2% 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 Darlington 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 Darlington
96.2%
95.3%
94.8%
92.4%
96.1%
96.0%
94.6%
95.2%
97.1%
95.2%
68.8%
100.0%