Annex approval rate in Merton
Merton approved 79.2% of annex applications, based on 101 decisions analysed.
Last updated: March 2026
79.2%
annex approval rate
101
Annex decisions
80
Approved
21
Refused
85.9%
Merton overall
Annex applications are refused more often than the Merton average (85.9%), suggesting the council scrutinises these projects more closely.
How annex compares in Merton
Annex
79.2%
Merton all applications
85.9%
Planning a annex in Merton?
79.2% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.
✓ Your ward's annex approval rate
✓ Nearest comparable annex decisions
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✓ Nearest comparable annex decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Merton
81.5%
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%