Side Extension approval rate in Flintshire

Flintshire approved 94.9% of side extension applications, based on 354 decisions analysed.

Last updated: March 2026

94.9%

side extension approval rate

354

Side Extension decisions

336

Approved

Refused

86.3%

Flintshire overall

Side Extension applications are approved more often than the Flintshire average (86.3%), suggesting the council is relatively receptive to these projects.

How side extension compares in Flintshire

Side Extension (354 decided)

94.9%

Flintshire all applications (5,930 decided)

86.3%

Planning a side extension in Flintshire?

94.9% 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 Flintshire Pro Report — £79

Less than one set of revised drawings.