Side Extension approval rate in Horsham
Horsham approved 96.2% of side extension applications, based on 1,378 decisions analysed.
Last updated: August 2026
96.2%
side extension approval rate
1,378
Side Extension decisions
1,326
Approved
52
Refused
91.2%
Horsham overall
Side Extension applications are approved more often than the Horsham average (91.2%), suggesting the council is relatively receptive to these projects.
How side extension compares in Horsham
Side Extension
96.2%
Horsham all applications
91.2%
Planning a side extension in Horsham?
96.2% 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
88.5%
95.2%
78.9%
91.7%
89.6%
98.3%
90.3%
96.1%
97.0%
94.7%
83.9%
91.5%
97.1%
76.7%