Side Extension approval rate in Windsor & Maidenhead
Windsor & Maidenhead approved 83.9% of side extension applications, based on 1,232 decisions analysed.
Last updated: March 2026
83.9%
side extension approval rate
1,232
Side Extension decisions
1,034
Approved
198
Refused
85.2%
Windsor & Maidenhead overall
Side Extension applications are approved at roughly the same rate as the Windsor & Maidenhead average (85.2%).
How side extension compares in Windsor & Maidenhead
Side Extension
83.9%
Windsor & Maidenhead all applications
85.2%
Planning a side extension in Windsor & Maidenhead?
83.9% get approved — but the odds vary by street. Your Pro Report 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
Get Windsor & Maidenhead Pro Report — £79
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Windsor & Maidenhead
85.4%
82.2%
81.3%
84.3%
79.6%
89.3%
84.0%
87.9%
81.2%
90.6%
76.1%
89.0%
71.4%
84.6%
90.0%