Rear Extension approval rate in Spelthorne
Spelthorne approved 86.0% of rear extension applications, based on 621 decisions analysed.
Last updated: August 2026
86.0%
rear extension approval rate
621
Rear Extension decisions
534
Approved
87
Refused
86.3%
Spelthorne overall
Rear Extension applications are approved at roughly the same rate as the Spelthorne average (86.3%).
How rear extension compares in Spelthorne
Rear Extension
86.0%
Spelthorne all applications
86.3%
Planning a rear extension in Spelthorne?
86.0% 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 rear extension approval rate
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Spelthorne →
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Spelthorne
80.2%
85.1%
75.3%
74.1%
89.2%
90.0%
74.2%
87.1%
87.5%
78.8%
76.5%
42.6%
31.2%
75.0%