Data-backed planning intelligence · 3,200,000+ decisions analysed across England, Scotland, Wales and Northern Ireland

Dormer approval rate in Westminster

Westminster approved 86.0% of dormer applications, based on 1,214 decisions analysed.

Last updated: June 2026

86.0%
dormer approval rate
1,214
Dormer decisions
1,044
Approved
170
Refused
90.8%
Westminster overall

Dormer applications are refused more often than the Westminster average (90.8%), suggesting the council scrutinises these projects more closely.

How dormer compares in Westminster

Dormer (1,214 decided)
86.0%
Westminster all applications (64,246 decided)
90.8%

Planning a dormer in Westminster?

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✓ Your ward's dormer approval rate
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Other project types in Westminster

Basement (9,741 decided)
92.8%
Extension (General) (3,390 decided)
90.9%
Rear Extension (3,168 decided)
87.7%
Loft Conversion (3,022 decided)
88.3%
Garage / Parking (2,773 decided)
93.4%
New Build (1,317 decided)
92.6%
90.9%
Outbuilding (611 decided)
88.5%
Flat Conversion (606 decided)
96.4%
Conservatory (603 decided)
89.9%
Side Extension (495 decided)
88.3%
HMO (135 decided)
74.8%
Annex (109 decided)
94.5%
Front Extension (53 decided)
88.7%
75.9%
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