Side Extension approval rate in Sunderland
Sunderland approved 94.7% of side extension applications, based on 792 decisions analysed.
Last updated: September 2026
94.7%
side extension approval rate
792
Side Extension decisions
750
Approved
42
Refused
91.4%
Sunderland overall
Side Extension applications are approved more often than the Sunderland average (91.4%), suggesting the council is relatively receptive to these projects.
How side extension compares in Sunderland
Side Extension
94.7%
Sunderland all applications
91.4%
Planning a side extension in Sunderland?
94.7% get approved, but the odds vary by street. Your Full Planning Analysis 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
Free planning check for Sunderland →
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Sunderland and any other published UK council — see the data services →
Other project types in Sunderland
94.7%
92.2%
95.4%
90.3%
79.9%
89.3%
97.4%
90.5%
97.7%
85.7%
51.9%
90.9%
83.3%
86.4%