Extension (General) approval rate in Sefton
Sefton approved 94.0% of extension (general) applications, based on 2,040 decisions analysed.
Last updated: September 2026
94.0%
extension (general) approval rate
2,040
Extension (General) decisions
1,917
Approved
123
Refused
90.5%
Sefton overall
Extension (General) applications are approved more often than the Sefton average (90.5%), suggesting the council is relatively receptive to these projects.
How extension (general) compares in Sefton
Extension (General)
94.0%
Sefton all applications
90.5%
Planning a extension (general) in Sefton?
94.0% 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 extension (general) approval rate
✓ Nearest comparable extension (general) decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Sefton →
✓ Nearest comparable extension (general) 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
91.6%
94.0%
91.1%
97.8%
85.6%
91.3%
96.7%
95.6%
75.0%
43.1%
98.5%
100.0%
83.7%
95.2%
94.7%