Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 296 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 | 7 | 7 | 100.0% |
| 2 | Sunbury Common | 10 | 10 | 100.0% |
| 3 | Staines | 8 | 8 | 100.0% |
| 4 | Riverside And Laleham | 6 | 6 | 100.0% |
| 5 | Halliford And Sunbury West | 7 | 7 | 100.0% |
| 6 | Ashford North And Stanwell South | 15 | 14 | 93.3% |
| 7 | Ashford East | 16 | 14 | 87.5% |
| 8 | Stanwell North | 7 | 6 | 85.7% |
| 9 | Ashford Town | 16 | 13 | 81.2% |
| 10 | Staines South | 20 | 16 | 80.0% |
| 11 | Sunbury East | 15 | 10 | 66.7% |
| 12 | Ashford Common | 16 | 10 | 62.5% |
A rear extension has a 100.0% approval rate in Shepperton Town but just 62.5% in Ashford Common.
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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 |
|---|---|---|
| Side Extension | 65 | 95.4% |
| Outbuilding | 32 | 93.8% |
| Conservatory | 52 | 90.4% |
| Garage / Parking | 88 | 88.6% |
| Rear Extension | 296 | 88.2% |
| Dormer | 79 | 84.8% |
| Loft Conversion | 57 | 84.2% |
| Hip-to-Gable Conversion | 40 | 82.5% |
35 rear extension applications in Spelthorne have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A £79 report shows you what gets approved — and what gets refused — near your property.
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