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 Westminster.
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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 Westminster.
| Type | Decisions | Rate |
|---|---|---|
| Flat Conversion | 606 | 96.4% |
| Annex | 111 | 93.7% |
| Garage / Parking | 2,804 | 93.5% |
| Basement | 9,812 | 92.8% |
| New Build | 1,326 | 92.6% |
| Change of Use (Residential) | 705 | 91.3% |
| Extension (General) | 3,427 | 90.9% |
| Conservatory | 612 | 89.9% |
| Loft Conversion | 3,040 | 88.4% |
| Outbuilding | 619 | 88.4% |
| Side Extension | 504 | 88.1% |
| Rear Extension | 3,209 | 87.5% |
| Front Extension | 54 | 87.0% |
| Dormer | 1,248 | 86.1% |
| Wraparound Extension | 28 | 78.6% |
| HMO | 141 | 73.8% |
353 loft conversion applications in Westminster 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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