Loft conversions change your roofline — and that makes them one of the more closely scrutinised application types. Councils scrutinise visibility, overlooking and street character more closely than for ground-level work. Here's what the data shows in Gwynedd.
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Loft conversions face more scrutiny than rear or side extensions because they change the property's profile from the street. Dormers, mansards and hip-to-gable alterations are particularly sensitive.
Two houses on the same street can get different outcomes.
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Not all applications are treated equally. Here's how loft conversions stack up against other common projects in Gwynedd.
| Type | Decisions | Rate |
|---|---|---|
| Conservatory | 194 | 96.4% |
| Rear Extension | 646 | 93.8% |
| Side Extension | 441 | 92.7% |
| Basement | 26 | 92.3% |
| Extension (General) | 1,829 | 91.4% |
| Loft Conversion | 115 | 91.3% |
| Wraparound Extension | 45 | 88.9% |
| Front Extension | 95 | 88.4% |
| Outbuilding | 704 | 86.5% |
| Garage / Parking | 994 | 85.9% |
| Change of Use (Residential) | 657 | 84.5% |
| Dormer | 288 | 84.4% |
| New Build | 521 | 79.3% |
| Annex | 165 | 78.8% |
| Flat Conversion | 33 | 69.7% |
| HMO | 37 | 64.9% |
10 loft conversion applications in Gwynedd 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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