Side Extension approval rate in Cambridge
Cambridge approved 94.4% of side extension applications, based on 815 decisions analysed.
Last updated: June 2026
94.4%
side extension approval rate
815
Side Extension decisions
769
Approved
46
Refused
92.9%
Cambridge overall
Side Extension applications are approved at roughly the same rate as the Cambridge average (92.9%).
How side extension compares in Cambridge
Side Extension
94.4%
Cambridge all applications
92.9%
Planning a side extension in Cambridge?
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 Cambridge →
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Cambridge
94.9%
92.5%
95.5%
95.3%
91.9%
91.3%
93.6%
84.7%
95.4%
97.7%
90.0%
97.2%
100.0%
72.7%