Outbuilding approval rate in Southwark

Southwark approved 92.8% of outbuilding applications, based on 1,156 decisions analysed.

Last updated: June 2026

92.8%

outbuilding approval rate

1,156

Outbuilding decisions

1,073

Approved

Refused

93.4%

Southwark overall

Outbuilding applications are approved at roughly the same rate as the Southwark average (93.4%).

How outbuilding compares in Southwark

Outbuilding (1,156 decided)

92.8%

Southwark all applications (30,054 decided)

93.4%

Planning a outbuilding in Southwark?

92.8% 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 outbuilding approval rate
✓ Nearest comparable outbuilding decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

Free planning check for Southwark →

Other project types in Southwark

Garage / Parking (5,449 decided)

95.9%

Rear Extension (3,909 decided)

92.2%

Basement (3,571 decided)

94.2%

Extension (General) (2,915 decided)

94.1%

Dormer (2,767 decided)

93.1%

Change of Use (Residential) (2,217 decided)

89.6%

Loft Conversion (2,162 decided)

88.6%

Side Extension (1,824 decided)

94.3%

New Build (1,494 decided)

95.6%

Flat Conversion (837 decided)

91.3%

Wraparound Extension (418 decided)

94.0%

Conservatory (257 decided)

92.6%

Hip-to-Gable Conversion (180 decided)

94.4%

HMO (164 decided)

84.8%

Annex (117 decided)

94.0%

Front Extension (114 decided)

93.0%

← All Southwark planning statistics

Check planning approval patterns, Free