Side Extension approval rate in Knowsley

Knowsley approved 97.3% of side extension applications, based on 1,115 decisions analysed.

Last updated: August 2026

97.3%

side extension approval rate

1,115

Side Extension decisions

1,085

Approved

Refused

94.4%

Knowsley overall

Side Extension applications are approved more often than the Knowsley average (94.4%), suggesting the council is relatively receptive to these projects.

How side extension compares in Knowsley

Side Extension (1,115 decided)

97.3%

Knowsley all applications (4,478 decided)

94.4%

Planning a side extension in Knowsley?

97.3% 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

Free planning check for Knowsley →