Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 1,339 real decisions tell us about rear extension outcomes in Calderdale.
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Rear extensions sit in the middle of the pack nationally. They're common enough that councils have clear precedent — but that cuts both ways. If your neighbours have been refused, that precedent works against you too.
| # | Ward | Decisions | Approved | Rate |
|---|---|---|---|---|
| 1 | Salterhebble Southowram And Skircoat Green | 5 | 5 | 100.0% |
| 2 | Warley | 5 | 3 | 60.0% |
A rear extension has a 100.0% approval rate in Salterhebble Southowram And Skircoat Green but just 60.0% in Warley.
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Not all applications are treated equally. Here's how rear extensions stack up against other common projects in Calderdale.
| Type | Decisions | Rate |
|---|---|---|
| Conservatory | 390 | 93.3% |
| Basement | 115 | 92.2% |
| Hip-to-Gable Conversion | 37 | 89.2% |
| Extension (General) | 1,891 | 88.9% |
| Rear Extension | 1,339 | 88.9% |
| Side Extension | 1,215 | 88.5% |
| Flat Conversion | 32 | 87.5% |
| Wraparound Extension | 181 | 87.3% |
| Outbuilding | 496 | 86.7% |
| Annex | 170 | 85.9% |
| Loft Conversion | 160 | 85.6% |
| Front Extension | 145 | 84.8% |
| Garage / Parking | 1,587 | 83.0% |
| Change of Use (Residential) | 865 | 82.8% |
| Dormer | 833 | 81.0% |
| HMO | 43 | 76.7% |
| New Build | 153 | 73.2% |
148 rear extension applications in Calderdale 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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