Side Extension approval rate in Sunderland

Sunderland approved 94.7% of side extension applications, based on 788 decisions analysed.

Last updated: August 2026

94.7%

side extension approval rate

788

Side Extension decisions

746

Approved

Refused

88.6%

Sunderland overall

Side Extension applications are approved more often than the Sunderland average (88.6%), suggesting the council is relatively receptive to these projects.

How side extension compares in Sunderland

Side Extension (788 decided)

94.7%

Sunderland all applications (11,042 decided)

88.6%

Planning a side extension in Sunderland?

94.7% 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 Sunderland →