Side Extension approval rate in Windsor & Maidenhead
Windsor & Maidenhead approved 83.5% of side extension applications, based on 1,490 decisions analysed.
Last updated: September 2026
83.5%
side extension approval rate
1,490
Side Extension decisions
1,244
Approved
246
Refused
81.8%
Windsor & Maidenhead overall
Side Extension applications are approved at roughly the same rate as the Windsor & Maidenhead average (81.8%).
How side extension compares in Windsor & Maidenhead
Side Extension
83.5%
Windsor & Maidenhead all applications
81.8%
Planning a side extension in Windsor & Maidenhead?
83.5% 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 Windsor & Maidenhead →
✓ 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 Windsor & Maidenhead and any other published UK council — see the data services →
Other project types in Windsor & Maidenhead
84.4%
82.2%
79.1%
84.7%
78.5%
87.4%
83.4%
87.4%
78.2%
83.6%
76.8%
87.9%
64.0%
80.0%
80.0%