Data-backed planning intelligence · 2,500,000+ decisions analysed across England, Scotland and Wales

Outbuilding approval rate in Horsham

Horsham approved 89.5% of outbuilding applications, based on 580 decisions analysed.

Last updated: March 2026

89.5%
outbuilding approval rate
580
Outbuilding decisions
519
Approved
61
Refused
91.2%
Horsham overall

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

How outbuilding compares in Horsham

Outbuilding (580 decided)
89.5%
Horsham all applications (12,372 decided)
91.2%

Planning a outbuilding in Horsham?

89.5% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.

✓ Your ward's outbuilding approval rate
✓ Nearest comparable outbuilding decisions
✓ Refusal triggers specific to your area
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Less than one set of revised drawings.

Other project types in Horsham

Rear Extension (2,125 decided)
95.3%
Garage / Parking (2,083 decided)
88.3%
Side Extension (1,319 decided)
96.3%
New Build (771 decided)
78.6%
72.9%
Dormer (661 decided)
91.4%
Conservatory (457 decided)
98.2%
Extension (General) (430 decided)
90.2%
Front Extension (389 decided)
96.1%
Wraparound Extension (314 decided)
96.8%
Loft Conversion (233 decided)
94.4%
Annex (144 decided)
84.7%
91.1%
Basement (32 decided)
96.9%
Flat Conversion (30 decided)
76.7%
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