Rear Extension approval rate in Portsmouth
Portsmouth approved 89.2% of rear extension applications, based on 2,254 decisions analysed.
Last updated: March 2026
89.2%
rear extension approval rate
2,254
Rear Extension decisions
2,010
Approved
244
Refused
88.5%
Portsmouth overall
Rear Extension applications are approved at roughly the same rate as the Portsmouth average (88.5%).
How rear extension compares in Portsmouth
Rear Extension
89.2%
Portsmouth all applications
88.5%
Planning a rear extension in Portsmouth?
89.2% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.
✓ Your ward's rear extension approval rate
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
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✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Portsmouth
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%
75.0%
70.4%