Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 745 real decisions tell us about rear extension outcomes in Swansea.
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Rear extensions sit in the middle of the pack nationally. They're common enough that councils have clear precedent — but that cuts both ways. If your neighbours have been refused, that precedent works against you too.
| # | Ward | Decisions | Approved | Rate |
|---|---|---|---|---|
| 1 | Mumbles - Area 2 | 11 | 10 | 90.9% |
Two houses on the same street can get different outcomes.
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Not all applications are treated equally. Here's how rear extensions stack up against other common projects in Swansea.
| Type | Decisions | Rate |
|---|---|---|
| Extension (General) | 102 | 88.2% |
| Conservatory | 148 | 85.8% |
| Outbuilding | 89 | 85.4% |
| Rear Extension | 745 | 83.4% |
| Garage / Parking | 451 | 82.9% |
| Side Extension | 468 | 82.1% |
| Annex | 21 | 81.0% |
| Wraparound Extension | 20 | 80.0% |
| Basement | 21 | 76.2% |
| Front Extension | 87 | 75.9% |
| Change of Use (Residential) | 160 | 74.4% |
| Dormer | 158 | 65.8% |
| Loft Conversion | 78 | 61.5% |
| HMO | 40 | 47.5% |
124 rear extension applications in Swansea have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A free, property-specific report shows you what gets approved — and what gets refused — near your property.
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