Rear Extension approval rate in Westminster

Westminster approved 87.7% of rear extension applications, based on 3,068 decisions analysed.

Last updated: March 2026

87.7%

rear extension approval rate

3,068

Rear Extension decisions

2,691

Approved

377

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 (3,068 decided)

87.7%

Westminster all applications (60,698 decided)

90.8%

Planning a rear extension in Westminster?

87.7% get approved — but the odds vary by street. Your Pro Report 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

Get Westminster Pro Report — £79

Less than one set of revised drawings.