Data-backed planning intelligence · 3,790,000+ decisions analysed across England, Scotland, Wales and Northern Ireland

Rear Extension approval rate in Swansea

Swansea approved 83.7% of rear extension applications, based on 784 decisions analysed.

Last updated: August 2026

83.7%
rear extension approval rate
784
Rear Extension decisions
656
Approved
128
Refused
85.8%
Swansea overall

Rear Extension applications are refused more often than the Swansea average (85.8%), suggesting the council scrutinises these projects more closely.

How rear extension compares in Swansea

Rear Extension (784 decided)
83.7%
Swansea all applications (3,900 decided)
85.8%

Planning a rear extension in Swansea?

83.7% 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 rear extension approval rate
✓ Nearest comparable rear extension decisions
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Other project types in Swansea

Side Extension (490 decided)
82.7%
Garage / Parking (479 decided)
83.1%
74.6%
Dormer (172 decided)
68.0%
Conservatory (154 decided)
86.4%
Extension (General) (116 decided)
89.7%
Outbuilding (97 decided)
86.6%
Front Extension (94 decided)
76.6%
Loft Conversion (83 decided)
63.9%
HMO (52 decided)
42.3%
Basement (22 decided)
72.7%
Annex (22 decided)
81.8%
81.0%
Flat Conversion (17 decided)
58.8%
New Build (14 decided)
85.7%
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