Rear Extension approval rate in Merton
Merton approved 81.8% of rear extension applications, based on 5,780 decisions analysed.
Last updated: August 2026
81.8%
rear extension approval rate
5,780
Rear Extension decisions
4,726
Approved
1,054
Refused
86.2%
Merton overall
Rear Extension applications are refused more often than the Merton average (86.2%), suggesting the council scrutinises these projects more closely.
How rear extension compares in Merton
Rear Extension
81.8%
Merton all applications
86.2%
Planning a rear extension in Merton?
81.8% 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 rear extension approval rate
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Merton →
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Merton
89.9%
88.5%
88.7%
85.0%
87.8%
86.9%
83.0%
87.2%
83.0%
91.4%
88.7%
92.6%
79.1%
55.6%
79.2%