Rear Extension approval rate in Gwynedd
Gwynedd approved 93.8% of rear extension applications, based on 646 decisions analysed.
Last updated: June 2026
93.8%
rear extension approval rate
646
Rear Extension decisions
606
Approved
40
Refused
88.6%
Gwynedd overall
Rear Extension applications are approved more often than the Gwynedd average (88.6%), suggesting the council is relatively receptive to these projects.
How rear extension compares in Gwynedd
Rear Extension
93.8%
Gwynedd all applications
88.6%
Planning a rear extension in Gwynedd?
93.8% get approved — but the odds vary by street. Your Full Planning Analysis shows exactly what gets approved and refused near your property.
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✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
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Free planning check for Gwynedd →
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Gwynedd
91.4%
85.9%
86.5%
79.3%
92.7%
84.4%
96.4%
78.8%
91.3%
88.4%
88.9%
64.9%
69.7%
92.3%