Rear Extension approval rate in Merton
Merton approved 81.9% of rear extension applications, based on 5,834 decisions analysed.
Last updated: September 2026
81.9%
rear extension approval rate
5,834
Rear Extension decisions
4,779
Approved
1,055
Refused
86.1%
Merton overall
Rear Extension applications are refused more often than the Merton average (86.1%), suggesting the council scrutinises these projects more closely.
How rear extension compares in Merton
Rear Extension
81.9%
Merton all applications
86.1%
Planning a rear extension in Merton?
81.9% 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
Planning professional? PlanningLens runs refusal alerts and evidence packs for Merton and any other published UK council — see the data services →
Other project types in Merton
90.0%
88.7%
88.7%
85.2%
87.8%
86.9%
83.2%
87.2%
83.1%
91.4%
88.8%
92.8%
79.1%
56.4%
79.2%