Side Extension approval rate in Croydon
Croydon approved 80.2% of side extension applications, based on 5,362 decisions analysed.
Last updated: September 2026
80.2%
side extension approval rate
5,362
Side Extension decisions
4,299
Approved
1,063
Refused
80.5%
Croydon overall
Side Extension applications are approved at roughly the same rate as the Croydon average (80.5%).
How side extension compares in Croydon
Side Extension
80.2%
Croydon all applications
80.5%
Planning a side extension in Croydon?
80.2% 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 Croydon →
✓ 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 Croydon and any other published UK council — see the data services →
Other project types in Croydon
81.4%
78.6%
78.7%
79.6%
76.6%
81.8%
80.0%
75.4%
77.4%
80.4%
78.4%
52.9%
52.9%
85.1%
72.7%