Side Extension approval rate in Mid Sussex
Mid Sussex approved 95.1% of side extension applications, based on 775 decisions analysed.
Last updated: September 2026
95.1%
side extension approval rate
775
Side Extension decisions
737
Approved
38
Refused
93.1%
Mid Sussex overall
Side Extension applications are approved at roughly the same rate as the Mid Sussex average (93.1%).
How side extension compares in Mid Sussex
Side Extension
95.1%
Mid Sussex all applications
93.1%
Planning a side extension in Mid Sussex?
95.1% 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 Mid Sussex →
✓ 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 Mid Sussex and any other published UK council — see the data services →
Other project types in Mid Sussex
92.0%
95.4%
92.2%
91.5%
92.8%
92.6%
97.3%
95.5%
76.4%
93.2%
92.4%
86.8%
93.1%
86.7%