Annex approval rate in Horsham
Horsham approved 84.6% of annex applications, based on 162 decisions analysed.
Last updated: September 2026
84.6%
annex approval rate
162
Annex decisions
137
Approved
25
Refused
88.0%
Horsham overall
Annex applications are refused more often than the Horsham average (88.0%), suggesting the council scrutinises these projects more closely.
How annex compares in Horsham
Annex
84.6%
Horsham all applications
88.0%
Planning a annex in Horsham?
84.6% 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 annex approval rate
✓ Nearest comparable annex decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Horsham →
✓ Nearest comparable annex 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%
95.2%
96.2%
78.9%
91.8%
89.7%
98.4%
90.4%
95.9%
97.1%
94.8%
91.8%
97.3%
76.7%