Rear Extension approval rate in Merton
Merton approved 81.5% of rear extension applications, based on 5,617 decisions analysed.
Last updated: March 2026
81.5%
rear extension approval rate
5,617
Rear Extension decisions
4,576
Approved
1,041
Refused
85.9%
Merton overall
Rear Extension applications are refused more often than the Merton average (85.9%), suggesting the council scrutinises these projects more closely.
How rear extension compares in Merton
Rear Extension
81.5%
Merton all applications
85.9%
Planning a rear extension in Merton?
81.5% get approved — but the odds vary by street. Your Pro Report 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
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✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Merton
89.9%
88.3%
88.7%
84.9%
87.7%
86.8%
82.8%
86.6%
82.8%
91.3%
88.5%
93.1%
78.2%
55.7%
79.2%