Annex approval rate in Horsham
Horsham approved 83.9% of annex applications, based on 155 decisions analysed.
Last updated: August 2026
83.9%
annex approval rate
155
Annex decisions
130
Approved
25
Refused
91.2%
Horsham overall
Annex applications are refused more often than the Horsham average (91.2%), suggesting the council scrutinises these projects more closely.
How annex compares in Horsham
Annex
83.9%
Horsham all applications
91.2%
Planning a annex in Horsham?
83.9% 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
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Free planning check for Horsham →
✓ Nearest comparable annex decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Horsham
88.5%
95.2%
96.2%
78.9%
91.7%
89.6%
98.3%
90.3%
96.1%
97.0%
94.7%
91.5%
97.1%
76.7%