Rear Extension approval rate in Spelthorne
Spelthorne approved 88.2% of rear extension applications, based on 296 decisions analysed.
Last updated: March 2026
88.2%
rear extension approval rate
296
Rear Extension decisions
261
Approved
35
Refused
90.5%
Spelthorne overall
Rear Extension applications are refused more often than the Spelthorne average (90.5%), suggesting the council scrutinises these projects more closely.
How rear extension compares in Spelthorne
Rear Extension
88.2%
Spelthorne all applications
90.5%
Planning a rear extension in Spelthorne?
88.2% get approved — but the odds vary by street. Your Pro Report 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
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✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Spelthorne
88.6%
84.8%
95.4%
84.2%
90.4%
82.5%
93.8%
93.8%
93.3%
93.3%