Side Extension approval rate in Derby
Derby approved 94.4% of side extension applications, based on 987 decisions analysed.
Last updated: September 2026
94.4%
side extension approval rate
987
Side Extension decisions
932
Approved
55
Refused
92.8%
Derby overall
Side Extension applications are approved at roughly the same rate as the Derby average (92.8%).
How side extension compares in Derby
Side Extension
94.4%
Derby all applications
92.8%
Planning a side extension in Derby?
94.4% 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 side extension approval rate
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Derby →
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Derby and any other published UK council — see the data services →
Other project types in Derby
95.9%
93.6%
91.9%
94.2%
82.6%
89.3%
86.9%
90.9%
86.2%
89.3%
73.5%
70.0%
94.4%
88.2%