Rear Extension approval rate in Merthyr Tydfil
Merthyr Tydfil approved 98.1% of rear extension applications, based on 158 decisions analysed.
Last updated: September 2026
98.1%
rear extension approval rate
158
Rear Extension decisions
155
Approved
3
Refused
88.6%
Merthyr Tydfil overall
Rear Extension applications are approved more often than the Merthyr Tydfil average (88.6%), suggesting the council is relatively receptive to these projects.
How rear extension compares in Merthyr Tydfil
Rear Extension
98.1%
Merthyr Tydfil all applications
88.6%
Planning a rear extension in Merthyr Tydfil?
98.1% 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 rear extension approval rate
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
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✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Merthyr Tydfil and any other published UK council — see the data services →
Other project types in Merthyr Tydfil
92.3%
89.1%
88.5%
90.0%
86.4%
78.9%
21.1%
94.4%
81.2%
91.7%
90.0%