Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 537 real decisions tell us about rear extension outcomes in Darlington.
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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 | Mowden | 6 | 4 | 66.7% |
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 Darlington.
| Type | Decisions | Rate |
|---|---|---|
| Loft Conversion | 46 | 97.8% |
| Annex | 31 | 96.8% |
| Outbuilding | 193 | 96.4% |
| Garage / Parking | 675 | 96.3% |
| Wraparound Extension | 50 | 96.0% |
| Dormer | 147 | 95.9% |
| Rear Extension | 537 | 95.5% |
| Side Extension | 175 | 95.4% |
| Conservatory | 165 | 95.2% |
| Basement | 21 | 95.2% |
| Extension (General) | 391 | 94.9% |
| New Build | 328 | 93.6% |
| Change of Use (Residential) | 188 | 86.2% |
| HMO | 35 | 85.7% |
24 rear extension applications in Darlington 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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