Data-backed planning intelligence · 3,200,000+ decisions analysed across England, Scotland, Wales and Northern Ireland

Extension (General) approval rate in Horsham

Horsham approved 90.5% of extension (general) applications, based on 444 decisions analysed.

Last updated: June 2026

90.5%
extension (general) approval rate
444
Extension (General) decisions
402
Approved
42
Refused
91.3%
Horsham overall

Extension (General) applications are approved at roughly the same rate as the Horsham average (91.3%).

How extension (general) compares in Horsham

Extension (General) (444 decided)
90.5%
Horsham all applications (12,690 decided)
91.3%

Planning a extension (general) in Horsham?

90.5% 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 extension (general) approval rate
✓ Nearest comparable extension (general) decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Horsham →

Other project types in Horsham

Rear Extension (2,150 decided)
95.3%
Garage / Parking (2,149 decided)
88.6%
Side Extension (1,336 decided)
96.3%
New Build (785 decided)
78.9%
73.0%
Dormer (672 decided)
91.5%
Outbuilding (592 decided)
89.7%
Conservatory (459 decided)
98.3%
Front Extension (395 decided)
96.2%
Wraparound Extension (321 decided)
96.9%
Loft Conversion (236 decided)
94.5%
Annex (149 decided)
85.2%
91.2%
Basement (34 decided)
97.1%
Flat Conversion (30 decided)
76.7%
Check planning approval patterns, Free