Side Extension approval rate in Flintshire
Flintshire approved 94.8% of side extension applications, based on 655 decisions analysed.
Last updated: September 2026
94.8%
side extension approval rate
655
Side Extension decisions
621
Approved
34
Refused
86.8%
Flintshire overall
Side Extension applications are approved more often than the Flintshire average (86.8%), suggesting the council is relatively receptive to these projects.
How side extension compares in Flintshire
Side Extension
94.8%
Flintshire all applications
86.8%
Planning a side extension in Flintshire?
94.8% 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 Flintshire →
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Flintshire and any other published UK council — see the data services →
Other project types in Flintshire
91.2%
87.1%
94.6%
77.0%
82.0%
95.1%
81.7%
85.1%
82.2%
95.3%
94.0%
70.7%
87.5%