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 Cornwall.
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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 Cornwall.
| Type | Decisions | Rate |
|---|---|---|
| Wraparound Extension | 63 | 98.4% |
| Side Extension | 601 | 98.2% |
| Conservatory | 556 | 97.7% |
| Basement | 110 | 97.3% |
| Rear Extension | 1,113 | 97.1% |
| Dormer | 630 | 96.3% |
| Extension (General) | 3,855 | 96.1% |
| Annex | 760 | 95.3% |
| Outbuilding | 1,354 | 94.5% |
| Garage / Parking | 3,582 | 93.8% |
| Loft Conversion | 420 | 93.6% |
| HMO | 59 | 93.2% |
| Front Extension | 117 | 93.2% |
| Flat Conversion | 57 | 93.0% |
| Change of Use (Residential) | 1,598 | 92.1% |
| New Build | 927 | 82.7% |
27 loft conversion applications in Cornwall 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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