Rear Extension approval rate in Sefton
Sefton approved 88.7% of rear extension applications, based on 426 decisions analysed.
Last updated: May 2026
88.7%
rear extension approval rate
426
Rear Extension decisions
378
Approved
48
Refused
87.5%
Sefton overall
Rear Extension applications are approved at roughly the same rate as the Sefton average (87.5%).
How rear extension compares in Sefton
Rear Extension
88.7%
Sefton all applications
87.5%
Planning a rear extension in Sefton?
88.7% 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 rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Sefton
93.3%
91.2%
92.2%
97.5%
84.5%
90.1%
95.1%
74.4%
93.3%
29.6%
95.0%
100.0%
86.1%
100.0%
96.2%