Dormer approval rate in Spelthorne
Spelthorne approved 75.7% of dormer applications, based on 239 decisions analysed.
Last updated: September 2026
75.7%
dormer approval rate
239
Dormer decisions
181
Approved
58
Refused
82.5%
Spelthorne overall
Dormer applications are refused more often than the Spelthorne average (82.5%), suggesting the council scrutinises these projects more closely.
How dormer compares in Spelthorne
Dormer
75.7%
Spelthorne all applications
82.5%
Planning a dormer in Spelthorne?
75.7% 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 dormer approval rate
✓ Nearest comparable dormer decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Spelthorne →
✓ Nearest comparable dormer decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Spelthorne and any other published UK council — see the data services →
Other project types in Spelthorne
85.9%
79.8%
83.7%
73.8%
88.7%
90.4%
74.5%
86.7%
87.8%
80.0%
77.8%
42.6%
31.2%
75.0%