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 Hounslow.
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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 Hounslow.
| Type | Decisions | Rate |
|---|---|---|
| Conservatory | 1,940 | 94.7% |
| Extension (General) | 3,055 | 92.9% |
| New Build | 4,808 | 90.3% |
| Basement | 1,496 | 90.0% |
| Dormer | 1,432 | 89.9% |
| Loft Conversion | 12,130 | 89.7% |
| Garage / Parking | 8,772 | 88.9% |
| Wraparound Extension | 1,518 | 88.9% |
| Side Extension | 7,853 | 88.1% |
| Hip-to-Gable Conversion | 3,282 | 85.5% |
| Rear Extension | 26,811 | 85.0% |
| Front Extension | 1,046 | 82.9% |
| Change of Use (Residential) | 3,110 | 82.7% |
| Outbuilding | 4,207 | 80.9% |
| Flat Conversion | 1,420 | 73.0% |
| Annex | 108 | 69.4% |
| HMO | 353 | 48.7% |
1,252 loft conversion applications in Hounslow 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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