Side Extension approval rate in Sefton

Sefton approved 95.5% of side extension applications, based on 178 decisions analysed.

Last updated: June 2026

95.5%

side extension approval rate

178

Side Extension decisions

170

Approved

Refused

87.5%

Sefton overall

Side Extension applications are approved more often than the Sefton average (87.5%), suggesting the council is relatively receptive to these projects.

How side extension compares in Sefton

Side Extension (178 decided)

95.5%

Sefton all applications (6,655 decided)

87.5%

Planning a side extension in Sefton?

95.5% 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 side extension approval rate
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

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