Data-backed planning intelligence · 3,700,000+ decisions analysed across England, Scotland, Wales and Northern Ireland

Extension (General) approval rate in Horsham

Horsham approved 90.3% of extension (general) applications, based on 463 decisions analysed.

Last updated: August 2026

90.3%
extension (general) approval rate
463
Extension (General) decisions
418
Approved
45
Refused
91.2%
Horsham overall

Extension (General) applications are approved at roughly the same rate as the Horsham average (91.2%).

How extension (general) compares in Horsham

Extension (General) (463 decided)
90.3%
Horsham all applications (13,181 decided)
91.2%

Planning a extension (general) in Horsham?

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Other project types in Horsham

Garage / Parking (2,251 decided)
88.5%
Rear Extension (2,214 decided)
95.2%
Side Extension (1,378 decided)
96.2%
New Build (817 decided)
78.9%
73.2%
Dormer (700 decided)
91.7%
Outbuilding (627 decided)
89.6%
Conservatory (469 decided)
98.3%
Front Extension (408 decided)
96.1%
Wraparound Extension (333 decided)
97.0%
Loft Conversion (243 decided)
94.7%
Annex (155 decided)
83.9%
91.5%
Basement (34 decided)
97.1%
Flat Conversion (30 decided)
76.7%
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