Side Extension approval rate in Darlington

Darlington approved 95.5% of side extension applications, based on 179 decisions analysed.

Last updated: August 2026

95.5%

side extension approval rate

179

Side Extension decisions

171

Approved

Refused

92.7%

Darlington overall

Side Extension applications are approved more often than the Darlington average (92.7%), suggesting the council is relatively receptive to these projects.

How side extension compares in Darlington

Side Extension (179 decided)

95.5%

Darlington all applications (3,336 decided)

92.7%

Planning a side extension in Darlington?

95.5% 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 Darlington →