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

Basement approval rate in Windsor & Maidenhead

Windsor & Maidenhead approved 88.3% of basement applications, based on 103 decisions analysed.

Last updated: August 2026

88.3%
basement approval rate
103
Basement decisions
91
Approved
12
Refused
84.3%
Windsor & Maidenhead overall

Basement applications are approved more often than the Windsor & Maidenhead average (84.3%), suggesting the council is relatively receptive to these projects.

How basement compares in Windsor & Maidenhead

Basement (103 decided)
88.3%
Windsor & Maidenhead all applications (7,868 decided)
84.3%

Planning a basement in Windsor & Maidenhead?

88.3% get approved, but the odds vary by street. Your Full Planning Analysis shows exactly what gets approved and refused near your property.

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Other project types in Windsor & Maidenhead

Rear Extension (2,239 decided)
84.5%
Garage / Parking (1,635 decided)
82.4%
Side Extension (1,435 decided)
83.6%
Dormer (743 decided)
80.1%
Front Extension (633 decided)
85.0%
Outbuilding (597 decided)
78.7%
78.0%
Loft Conversion (290 decided)
88.6%
Extension (General) (213 decided)
83.6%
Conservatory (199 decided)
86.9%
New Build (155 decided)
78.1%
86.0%
Wraparound Extension (122 decided)
76.2%
Annex (45 decided)
62.2%
Flat Conversion (15 decided)
80.0%
HMO (14 decided)
78.6%
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