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 East Cambridgeshire.
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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.
Two houses on the same street can get different outcomes.
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Not all applications are treated equally. Here's how rear extensions stack up against other common projects in East Cambridgeshire.
| Type | Decisions | Rate |
|---|---|---|
| Conservatory | 220 | 98.2% |
| Rear Extension | 1,339 | 94.3% |
| Front Extension | 218 | 92.2% |
| Side Extension | 653 | 92.2% |
| Wraparound Extension | 100 | 92.0% |
| Extension (General) | 895 | 90.8% |
| Dormer | 173 | 90.2% |
| Outbuilding | 720 | 89.2% |
| Loft Conversion | 207 | 87.9% |
| Garage / Parking | 2,073 | 87.2% |
| Annex | 191 | 85.3% |
| Change of Use (Residential) | 583 | 82.8% |
| New Build | 480 | 78.1% |
76 rear extension applications in East Cambridgeshire 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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