Side Extension approval rate in County Durham

County Durham approved 97.1% of side extension applications, based on 905 decisions analysed.

Last updated: August 2026

97.1%

side extension approval rate

905

Side Extension decisions

879

Approved

Refused

94.9%

County Durham overall

Side Extension applications are approved more often than the County Durham average (94.9%), suggesting the council is relatively receptive to these projects.

How side extension compares in County Durham

Side Extension (905 decided)

97.1%

County Durham all applications (15,557 decided)

94.9%

Planning a side extension in County Durham?

97.1% 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 County Durham →