Annex approval rate in Islington
Islington approved 78.4% of annex applications, based on 88 decisions analysed.
Last updated: March 2026
78.4%
annex approval rate
88
Annex decisions
69
Approved
19
Refused
82.8%
Islington overall
Annex applications are refused more often than the Islington average (82.8%), suggesting the council scrutinises these projects more closely.
How annex compares in Islington
Annex
78.4%
Islington all applications
82.8%
Planning a annex in Islington?
78.4% 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
✓ Refusal triggers specific to your area
✓ PDF report for your architect
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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 Islington
80.7%
82.2%
67.2%
80.6%
76.4%
72.8%
71.6%
79.9%
86.0%
85.0%
67.1%
77.3%
82.7%
79.4%
52.5%