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Flat Conversion approval rate in Spelthorne

Spelthorne approved 31.2% of flat conversion applications, based on 16 decisions analysed.

Last updated: June 2026

31.2%
flat conversion approval rate
16
Flat Conversion decisions
5
Approved
11
Refused
86.2%
Spelthorne overall

Flat Conversion applications are refused more often than the Spelthorne average (86.2%), suggesting the council scrutinises these projects more closely.

How flat conversion compares in Spelthorne

Flat Conversion (16 decided)
31.2%
Spelthorne all applications (1,484 decided)
86.2%

Planning a flat conversion in Spelthorne?

31.2% get approved — but the odds vary by street. Your Full Planning Analysis shows exactly what gets approved and refused near your property.

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✓ Nearest comparable flat conversion decisions
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Other project types in Spelthorne

Rear Extension (571 decided)
85.6%
Garage / Parking (275 decided)
79.6%
Side Extension (206 decided)
85.0%
Dormer (200 decided)
75.5%
Loft Conversion (120 decided)
73.3%
Outbuilding (100 decided)
88.0%
Conservatory (96 decided)
89.6%
73.2%
Front Extension (72 decided)
87.5%
88.9%
61.7%
New Build (51 decided)
78.4%
HMO (41 decided)
43.9%
Extension (General) (39 decided)
74.4%
Annex (11 decided)
72.7%
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