Rear Extension approval rate in Horsham
Horsham approved 95.2% of rear extension applications, based on 2,270 decisions analysed.
Last updated: September 2026
95.2%
rear extension approval rate
2,270
Rear Extension decisions
2,161
Approved
109
Refused
88.0%
Horsham overall
Rear Extension applications are approved more often than the Horsham average (88.0%), suggesting the council is relatively receptive to these projects.
How rear extension compares in Horsham
Rear Extension
95.2%
Horsham all applications
88.0%
Planning a rear extension in Horsham?
95.2% 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 rear extension approval rate
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Horsham →
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Horsham and any other published UK council — see the data services →
Other project types in Horsham
88.7%
96.2%
78.9%
91.8%
89.7%
98.4%
90.4%
95.9%
97.1%
94.8%
84.6%
91.8%
97.3%
76.7%