Side Extension approval rate in Knowsley

Knowsley approved 97.2% of side extension applications, based on 1,082 decisions analysed.

Last updated: March 2026

97.2%

side extension approval rate

1,082

Side Extension decisions

1,052

Approved

Refused

94.5%

Knowsley overall

Side Extension applications are approved more often than the Knowsley average (94.5%), suggesting the council is relatively receptive to these projects.

How side extension compares in Knowsley

Side Extension (1,082 decided)

97.2%

Knowsley all applications (4,280 decided)

94.5%

Planning a side extension in Knowsley?

97.2% 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

Get Knowsley Pro Report — £79

Less than one set of revised drawings.