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

Basement approval rate in Winchester

Winchester approved 93.2% of basement applications, based on 44 decisions analysed.

Last updated: August 2026

93.2%
basement approval rate
44
Basement decisions
41
Approved
3
Refused
94.9%
Winchester overall

Basement applications are approved at roughly the same rate as the Winchester average (94.9%).

How basement compares in Winchester

Basement (44 decided)
93.2%
Winchester all applications (7,039 decided)
94.9%

Planning a basement in Winchester?

93.2% 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 basement approval rate
✓ Nearest comparable basement decisions
✓ Refusal triggers specific to your area
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Other project types in Winchester

Garage / Parking (1,076 decided)
94.6%
Rear Extension (958 decided)
97.4%
Side Extension (561 decided)
97.1%
Extension (General) (491 decided)
95.3%
Outbuilding (392 decided)
92.9%
Dormer (351 decided)
95.7%
88.1%
Conservatory (250 decided)
98.0%
Loft Conversion (239 decided)
95.0%
New Build (168 decided)
82.1%
Front Extension (145 decided)
96.6%
Annex (98 decided)
92.9%
96.6%
96.8%
HMO (19 decided)
78.9%
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