Side Extension approval rate in Sutton
Sutton approved 78.7% of side extension applications, based on 2,890 decisions analysed.
Last updated: March 2026
78.7%
side extension approval rate
2,890
Side Extension decisions
2,273
Approved
617
Refused
83.9%
Sutton overall
Side Extension applications are refused more often than the Sutton average (83.9%), suggesting the council scrutinises these projects more closely.
How side extension compares in Sutton
Side Extension
78.7%
Sutton all applications
83.9%
Planning a side extension in Sutton?
78.7% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.
✓ Your ward's side extension approval rate
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
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✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Sutton
79.4%
82.6%
82.3%
88.4%
77.5%
78.3%
91.8%
77.0%
81.6%
82.5%
84.1%
84.1%
74.5%
75.2%
77.5%