Annex approval rate in Portsmouth
Portsmouth approved 75.0% of annex applications, based on 36 decisions analysed.
Last updated: March 2026
75.0%
annex approval rate
36
Annex decisions
27
Approved
9
Refused
88.5%
Portsmouth overall
Annex applications are refused more often than the Portsmouth average (88.5%), suggesting the council scrutinises these projects more closely.
How annex compares in Portsmouth
Annex
75.0%
Portsmouth all applications
88.5%
Planning a annex in Portsmouth?
75.0% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.
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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 Portsmouth
89.2%
85.5%
78.7%
84.6%
87.0%
85.9%
92.2%
93.2%
75.0%
68.7%
85.3%
79.2%
87.4%
91.3%
70.4%