Data-backed planning intelligence · 2,500,000+ decisions analysed across England, Scotland and Wales

Outbuilding approval rate in Birmingham

Birmingham approved 86.0% of outbuilding applications, based on 757 decisions analysed.

Last updated: March 2026

86.0%
outbuilding approval rate
757
Outbuilding decisions
651
Approved
106
Refused
83.8%
Birmingham overall

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

How outbuilding compares in Birmingham

Outbuilding (757 decided)
86.0%
Birmingham all applications (33,111 decided)
83.8%

Planning a outbuilding in Birmingham?

86.0% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.

✓ Your ward's outbuilding approval rate
✓ Nearest comparable outbuilding decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Get Birmingham Pro Report — £79

Less than one set of revised drawings.

Other project types in Birmingham

Rear Extension (13,248 decided)
87.2%
Side Extension (5,640 decided)
87.1%
New Build (3,721 decided)
83.2%
Dormer (2,363 decided)
76.1%
55.1%
Wraparound Extension (1,842 decided)
87.8%
Garage / Parking (1,578 decided)
79.7%
Front Extension (1,556 decided)
85.3%
HMO (1,002 decided)
60.0%
Loft Conversion (791 decided)
74.1%
Extension (General) (650 decided)
80.8%
63.6%
Flat Conversion (297 decided)
52.2%
Conservatory (166 decided)
88.0%
Basement (127 decided)
79.5%
Annex (91 decided)
69.2%
Check planning approval patterns — Free