Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 5,992 real decisions tell us about rear extension outcomes in Wandsworth.
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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 | Tooting Bec | 5 | 5 | 100.0% |
| 2 | Thamesfield | 5 | 4 | 80.0% |
A rear extension has a 100.0% approval rate in Tooting Bec but just 80.0% in Thamesfield.
Check your postcode to see what actually happens near your address.
Not all applications are treated equally. Here's how rear extensions stack up against other common projects in Wandsworth.
| Type | Decisions | Rate |
|---|---|---|
| Conservatory | 99 | 97.0% |
| Flat Conversion | 726 | 96.3% |
| Garage / Parking | 3,326 | 95.6% |
| Basement | 3,142 | 95.0% |
| New Build | 1,708 | 94.2% |
| Side Extension | 3,315 | 93.6% |
| Change of Use (Residential) | 1,957 | 93.1% |
| Rear Extension | 5,992 | 93.0% |
| Extension (General) | 1,564 | 92.8% |
| Wraparound Extension | 265 | 92.5% |
| Outbuilding | 782 | 91.8% |
| Annex | 59 | 91.5% |
| Loft Conversion | 4,304 | 91.3% |
| HMO | 192 | 90.1% |
| Dormer | 1,872 | 88.8% |
| Front Extension | 114 | 86.8% |
| Hip-to-Gable Conversion | 289 | 83.0% |
420 rear extension applications in Wandsworth 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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