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

Flat Conversion approval rate in Westminster

Westminster approved 96.4% of flat conversion applications, based on 606 decisions analysed.

Last updated: August 2026

96.4%
flat conversion approval rate
606
Flat Conversion decisions
584
Approved
22
Refused
90.8%
Westminster overall

Flat Conversion applications are approved more often than the Westminster average (90.8%), suggesting the council is relatively receptive to these projects.

How flat conversion compares in Westminster

Flat Conversion (606 decided)
96.4%
Westminster all applications (65,586 decided)
90.8%

Planning a flat conversion in Westminster?

96.4% 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 flat conversion approval rate
✓ Nearest comparable flat conversion decisions
✓ Refusal triggers specific to your area
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Other project types in Westminster

Basement (9,847 decided)
92.8%
Extension (General) (3,435 decided)
90.9%
Rear Extension (3,218 decided)
87.5%
Loft Conversion (3,046 decided)
88.4%
Garage / Parking (2,813 decided)
93.5%
New Build (1,329 decided)
92.6%
Dormer (1,252 decided)
86.1%
91.4%
Outbuilding (624 decided)
88.5%
Conservatory (613 decided)
89.9%
Side Extension (507 decided)
88.2%
HMO (140 decided)
73.6%
Annex (111 decided)
93.7%
Front Extension (54 decided)
87.0%
79.3%
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