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 Harrow.
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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 Harrow.
| Type | Decisions | Rate |
|---|---|---|
| Hip-to-Gable Conversion | 66 | 86.4% |
| Conservatory | 582 | 81.1% |
| Outbuilding | 1,769 | 79.0% |
| New Build | 61 | 78.7% |
| Front Extension | 1,890 | 77.4% |
| Extension (General) | 908 | 77.1% |
| Garage / Parking | 3,654 | 76.3% |
| Wraparound Extension | 286 | 75.5% |
| Rear Extension | 10,512 | 75.3% |
| Dormer | 4,257 | 74.6% |
| Side Extension | 4,224 | 73.6% |
| Loft Conversion | 117 | 70.1% |
| Basement | 267 | 69.7% |
| Change of Use (Residential) | 739 | 63.5% |
| Flat Conversion | 274 | 63.1% |
| HMO | 287 | 56.4% |
| Annex | 76 | 42.1% |
35 loft conversion applications in Harrow 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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