Extension (General) approval rate in Merton
Merton approved 87.2% of extension (general) applications, based on 940 decisions analysed.
Last updated: September 2026
87.2%
extension (general) approval rate
940
Extension (General) decisions
820
Approved
120
Refused
86.1%
Merton overall
Extension (General) applications are approved at roughly the same rate as the Merton average (86.1%).
How extension (general) compares in Merton
Extension (General)
87.2%
Merton all applications
86.1%
Planning a extension (general) in Merton?
87.2% 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 extension (general) approval rate
✓ Nearest comparable extension (general) decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Merton →
✓ Nearest comparable extension (general) 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
81.9%
90.0%
88.7%
88.7%
85.2%
87.8%
86.9%
83.2%
83.1%
91.4%
88.8%
92.8%
79.1%
56.4%
79.2%