Side Extension approval rate in Westminster
Westminster approved 88.2% of side extension applications, based on 507 decisions analysed.
Last updated: August 2026
88.2%
side extension approval rate
507
Side Extension decisions
447
Approved
60
Refused
90.8%
Westminster overall
Side Extension applications are refused more often than the Westminster average (90.8%), suggesting the council scrutinises these projects more closely.
How side extension compares in Westminster
Side Extension
88.2%
Westminster all applications
90.8%
Planning a side extension in Westminster?
88.2% 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 Westminster →
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Other project types in Westminster
92.8%
90.9%
87.5%
88.4%
93.5%
92.6%
86.1%
88.5%
89.9%
96.4%
73.6%
93.7%
87.0%
79.3%