Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 571 real decisions tell us about rear extension outcomes in Spelthorne.
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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 | Shepperton Town | 8 | 8 | 100.0% |
| 2 | Ashford Town | 8 | 8 | 100.0% |
| 3 | Ashford East | 10 | 10 | 100.0% |
| 4 | Riverside And Laleham | 8 | 8 | 100.0% |
| 5 | Halliford And Sunbury West | 5 | 5 | 100.0% |
| 6 | Ashford Common | 13 | 12 | 92.3% |
| 7 | Sunbury East | 9 | 8 | 88.9% |
| 8 | Sunbury Common | 5 | 4 | 80.0% |
| 9 | Staines South | 7 | 5 | 71.4% |
| 10 | Ashford North And Stanwell South | 12 | 8 | 66.7% |
A rear extension has a 100.0% approval rate in Shepperton Town but just 66.7% in Ashford North And Stanwell South.
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Not all applications are treated equally. Here's how rear extensions stack up against other common projects in Spelthorne.
| Type | Decisions | Rate |
|---|---|---|
| Conservatory | 96 | 89.6% |
| Wraparound Extension | 63 | 88.9% |
| Outbuilding | 100 | 88.0% |
| Front Extension | 72 | 87.5% |
| Rear Extension | 571 | 85.6% |
| Side Extension | 206 | 85.0% |
| Garage / Parking | 275 | 79.6% |
| New Build | 51 | 78.4% |
| Dormer | 200 | 75.5% |
| Extension (General) | 39 | 74.4% |
| Loft Conversion | 120 | 73.3% |
| Hip-to-Gable Conversion | 82 | 73.2% |
| Change of Use (Residential) | 60 | 61.7% |
| HMO | 41 | 43.9% |
82 rear extension applications in Spelthorne 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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