Rear Extension approval rate in Westminster

Westminster approved 87.5% of rear extension applications, based on 3,218 decisions analysed.

Last updated: August 2026

87.5%

rear extension approval rate

3,218

Rear Extension decisions

2,817

Approved

401

Refused

90.8%

Westminster overall

Rear Extension applications are refused more often than the Westminster average (90.8%), suggesting the council scrutinises these projects more closely.

How rear extension compares in Westminster

Rear Extension (3,218 decided)

87.5%

Westminster all applications (65,586 decided)

90.8%

Planning a rear extension in Westminster?

87.5% 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 rear extension approval rate
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

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