Side Extension approval rate in Derby
Derby approved 95.6% of side extension applications, based on 819 decisions analysed.
Last updated: March 2026
95.6%
side extension approval rate
819
Side Extension decisions
783
Approved
36
Refused
93.4%
Derby overall
Side Extension applications are approved more often than the Derby average (93.4%), suggesting the council is relatively receptive to these projects.
How side extension compares in Derby
Side Extension
95.6%
Derby all applications
93.4%
Planning a side extension in Derby?
95.6% 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
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✓ 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 Derby
96.8%
94.1%
93.2%
95.8%
83.3%
87.2%
88.7%
90.6%
89.8%
91.7%
69.6%
93.8%
78.6%
91.7%