Dormer approval rate in Spelthorne

Spelthorne approved 84.8% of dormer applications, based on 79 decisions analysed.

Last updated: March 2026

84.8%

dormer approval rate

Dormer decisions

Approved

Refused

90.5%

Spelthorne overall

Dormer applications are refused more often than the Spelthorne average (90.5%), suggesting the council scrutinises these projects more closely.

How dormer compares in Spelthorne

Dormer (79 decided)

84.8%

Spelthorne all applications (717 decided)

90.5%

84.8% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.

✓ Your ward's dormer approval rate
✓ Nearest comparable dormer decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

Less than one set of revised drawings.

88.2%

88.6%

95.4%

84.2%

Conservatory (52 decided)

90.4%

82.5%

Outbuilding (32 decided)

93.8%

93.8%

93.3%

New Build (15 decided)

93.3%