Side Extension approval rate in Cambridge
Cambridge approved 94.6% of side extension applications, based on 848 decisions analysed.
Last updated: August 2026
94.6%
side extension approval rate
848
Side Extension decisions
802
Approved
46
Refused
93.0%
Cambridge overall
Side Extension applications are approved at roughly the same rate as the Cambridge average (93.0%).
How side extension compares in Cambridge
Side Extension
94.6%
Cambridge all applications
93.0%
Planning a side extension in Cambridge?
94.6% 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
95.1%
92.8%
95.6%
95.4%
91.5%
91.9%
93.7%
84.9%
95.7%
97.7%
90.4%
97.5%
76.0%
100.0%