Side Extension approval rate in Calderdale
Calderdale approved 88.5% of side extension applications, based on 1,250 decisions analysed.
Last updated: September 2026
88.5%
side extension approval rate
1,250
Side Extension decisions
1,106
Approved
144
Refused
85.5%
Calderdale overall
Side Extension applications are approved more often than the Calderdale average (85.5%), suggesting the council is relatively receptive to these projects.
How side extension compares in Calderdale
Side Extension
88.5%
Calderdale all applications
85.5%
Planning a side extension in Calderdale?
88.5% 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 Calderdale →
✓ 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 Calderdale and any other published UK council — see the data services →
Other project types in Calderdale
88.9%
83.1%
88.8%
80.3%
86.3%
93.2%
87.8%
86.0%
86.1%
73.3%
84.5%
92.3%
76.1%
86.8%
87.9%