Side Extension approval rate in Horsham
Horsham approved 96.3% of side extension applications, based on 1,336 decisions analysed.
Last updated: June 2026
96.3%
side extension approval rate
1,336
Side Extension decisions
1,286
Approved
50
Refused
91.3%
Horsham overall
Side Extension applications are approved more often than the Horsham average (91.3%), suggesting the council is relatively receptive to these projects.
How side extension compares in Horsham
Side Extension
96.3%
Horsham all applications
91.3%
Planning a side extension in Horsham?
96.3% 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 Horsham →
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Horsham
95.3%
88.6%
78.9%
91.5%
89.7%
98.3%
90.5%
96.2%
96.9%
94.5%
85.2%
91.2%
97.1%
76.7%