Side Extension approval rate in Northumberland
Northumberland approved 94.4% of side extension applications, based on 18 decisions analysed.
Last updated: August 2026
94.4%
side extension approval rate
18
Side Extension decisions
17
Approved
1
Refused
91.2%
Northumberland overall
Side Extension applications are approved more often than the Northumberland average (91.2%), suggesting the council is relatively receptive to these projects.
How side extension compares in Northumberland
Side Extension
94.4%
Northumberland all applications
91.2%
Planning a side extension in Northumberland?
94.4% 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 Northumberland →
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Northumberland
84.7%
87.5%
92.1%
94.4%
92.3%
100.0%