Rear Extension approval rate in Sefton
Sefton approved 90.4% of rear extension applications, based on 533 decisions analysed.
Last updated: August 2026
90.4%
rear extension approval rate
533
Rear Extension decisions
482
Approved
51
Refused
88.0%
Sefton overall
Rear Extension applications are approved more often than the Sefton average (88.0%), suggesting the council is relatively receptive to these projects.
How rear extension compares in Sefton
Rear Extension
90.4%
Sefton all applications
88.0%
Planning a rear extension in Sefton?
90.4% 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
93.5%
91.2%
92.8%
97.7%
85.2%
90.5%
96.3%
72.6%
94.7%
33.3%
100.0%
100.0%
82.9%
95.1%
94.4%