Rear Extension approval rate in Birmingham

Birmingham approved 87.2% of rear extension applications, based on 13,248 decisions analysed.

Last updated: March 2026

87.2%

rear extension approval rate

13,248

Rear Extension decisions

11,547

Approved

1,701

Refused

83.8%

Birmingham overall

Rear Extension applications are approved more often than the Birmingham average (83.8%), suggesting the council is relatively receptive to these projects.

How rear extension compares in Birmingham

Rear Extension (13,248 decided)

87.2%

Birmingham all applications (33,111 decided)

83.8%

Planning a rear extension in Birmingham?

87.2% 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 Birmingham Pro Report — £79

Less than one set of revised drawings.