Data-backed planning intelligence · 3,200,000+ decisions analysed across England, Scotland, Wales and Northern Ireland

Rear Extension approval rate in Swansea

Swansea approved 83.4% of rear extension applications, based on 745 decisions analysed.

Last updated: June 2026

83.4%
rear extension approval rate
745
Rear Extension decisions
621
Approved
124
Refused
85.7%
Swansea overall

Rear Extension applications are refused more often than the Swansea average (85.7%), suggesting the council scrutinises these projects more closely.

How rear extension compares in Swansea

Rear Extension (745 decided)
83.4%
Swansea all applications (3,668 decided)
85.7%

Planning a rear extension in Swansea?

83.4% 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 (468 decided)
82.1%
Garage / Parking (451 decided)
82.9%
74.4%
Dormer (158 decided)
65.8%
Conservatory (148 decided)
85.8%
Extension (General) (102 decided)
88.2%
Outbuilding (89 decided)
85.4%
Front Extension (87 decided)
75.9%
Loft Conversion (78 decided)
61.5%
HMO (40 decided)
47.5%
Basement (21 decided)
76.2%
Annex (21 decided)
81.0%
80.0%
Flat Conversion (17 decided)
58.8%
New Build (13 decided)
84.6%
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