Side Extension approval rate in South Downs
South Downs approved 91.3% of side extension applications, based on 576 decisions analysed.
Last updated: September 2026
91.3%
side extension approval rate
576
Side Extension decisions
526
Approved
50
Refused
91.2%
South Downs overall
Side Extension applications are approved at roughly the same rate as the South Downs average (91.2%).
How side extension compares in South Downs
Side Extension
91.3%
South Downs all applications
91.2%
Planning a side extension in South Downs?
91.3% 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 South Downs →
✓ 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 South Downs and any other published UK council — see the data services →
Other project types in South Downs
90.7%
93.0%
94.9%
93.8%
88.2%
94.8%
84.9%
89.5%
83.5%
93.0%
86.8%
94.1%
74.3%