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

Basement approval rate in Westminster

Westminster approved 92.8% of basement applications, based on 9,448 decisions analysed.

Last updated: March 2026

92.8%
basement approval rate
9,448
Basement decisions
8,771
Approved
677
Refused
90.8%
Westminster overall

Basement applications are approved at roughly the same rate as the Westminster average (90.8%).

How basement compares in Westminster

Basement (9,448 decided)
92.8%
Westminster all applications (60,698 decided)
90.8%

Planning a basement in Westminster?

92.8% get approved — but the odds vary by street. Your Pro Report 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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Less than one set of revised drawings.

Other project types in Westminster

Extension (General) (3,274 decided)
91.0%
Rear Extension (3,068 decided)
87.7%
Loft Conversion (2,936 decided)
88.6%
Garage / Parking (2,685 decided)
93.6%
New Build (1,297 decided)
92.8%
Dormer (1,160 decided)
86.1%
91.5%
Flat Conversion (590 decided)
96.6%
Outbuilding (586 decided)
88.4%
Conservatory (585 decided)
90.4%
Side Extension (465 decided)
88.6%
HMO (119 decided)
77.3%
Annex (105 decided)
94.3%
Front Extension (49 decided)
89.8%
82.1%
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