Data-backed planning intelligence · 3,840,000+ decisions analysed across England, Scotland, Wales and Northern Ireland

Outbuilding approval rate in Southwark

Southwark approved 92.6% of outbuilding applications, based on 1,201 decisions analysed.

Last updated: September 2026

92.6%
outbuilding approval rate
1,201
Outbuilding decisions
1,112
Approved
89
Refused
93.0%
Southwark overall

Outbuilding applications are approved at roughly the same rate as the Southwark average (93.0%).

How outbuilding compares in Southwark

Outbuilding (1,201 decided)
92.6%
Southwark all applications (23,560 decided)
93.0%

Planning a outbuilding in Southwark?

92.6% 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 →

Planning professional? PlanningLens runs refusal alerts and evidence packs for Southwark and any other published UK council — see the data services →

Other project types in Southwark

Garage / Parking (5,593 decided)
96.1%
Rear Extension (3,997 decided)
92.3%
Basement (3,655 decided)
94.4%
Extension (General) (2,980 decided)
94.1%
Dormer (2,845 decided)
93.2%
89.3%
Loft Conversion (2,209 decided)
88.8%
Side Extension (1,869 decided)
94.4%
New Build (1,538 decided)
95.4%
Flat Conversion (840 decided)
91.0%
Wraparound Extension (436 decided)
94.3%
Conservatory (260 decided)
92.7%
94.0%
HMO (168 decided)
85.1%
Annex (122 decided)
95.1%
Front Extension (118 decided)
93.2%
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