Rear Extension approval rate in Sefton
Sefton approved 91.1% of rear extension applications, based on 586 decisions analysed.
Last updated: September 2026
91.1%
rear extension approval rate
586
Rear Extension decisions
534
Approved
52
Refused
90.5%
Sefton overall
Rear Extension applications are approved at roughly the same rate as the Sefton average (90.5%).
How rear extension compares in Sefton
Rear Extension
91.1%
Sefton all applications
90.5%
Planning a rear extension in Sefton?
91.1% 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 Sefton →
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Sefton and any other published UK council — see the data services →
Other project types in Sefton
94.0%
91.6%
94.0%
97.8%
85.6%
91.3%
96.7%
95.6%
75.0%
43.1%
98.5%
100.0%
83.7%
95.2%
94.7%