Side Extension approval rate in Sefton

Sefton approved 95.1% of side extension applications, based on 162 decisions analysed.

Last updated: March 2026

95.1%

side extension approval rate

162

Side Extension decisions

154

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 (162 decided)

95.1%

Sefton all applications (6,453 decided)

87.5%

Planning a side extension in Sefton?

95.1% get approved — but the odds vary by street. Your Pro Report 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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Less than one set of revised drawings.