Side Extension approval rate in Belfast City Council

Belfast City Council approved 98.6% of side extension applications, based on 1,426 decisions analysed.

Last updated: June 2026

98.6%

side extension approval rate

1,426

Side Extension decisions

1,406

Approved

Refused

94.2%

Belfast City Council overall

Side Extension applications are approved more often than the Belfast City Council average (94.2%), suggesting the council is relatively receptive to these projects.

How side extension compares in Belfast City Council

Side Extension (1,426 decided)

98.6%

Belfast City Council all applications (13,582 decided)

94.2%

Planning a side extension in Belfast City Council?

98.6% 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 Belfast City Council →