Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 7,930 real decisions tell us about rear extension outcomes in Waltham Forest.
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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 | William Morris | 6 | 6 | 100.0% |
| 2 | Chapel End | 5 | 4 | 80.0% |
| 3 | Upper Walthamstow | 5 | 3 | 60.0% |
| 4 | St James | 6 | 2 | 33.3% |
A rear extension has a 100.0% approval rate in William Morris but just 33.3% in St James.
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 Waltham Forest.
| Type | Decisions | Rate |
|---|---|---|
| New Build | 403 | 95.0% |
| Extension (General) | 405 | 84.2% |
| Wraparound Extension | 592 | 82.4% |
| Flat Conversion | 1,820 | 81.4% |
| Outbuilding | 656 | 81.2% |
| Dormer | 4,549 | 80.3% |
| Conservatory | 104 | 79.8% |
| Hip-to-Gable Conversion | 650 | 79.1% |
| Loft Conversion | 4,503 | 78.2% |
| Rear Extension | 7,930 | 75.3% |
| Garage / Parking | 1,535 | 73.2% |
| Side Extension | 1,470 | 72.8% |
| Basement | 268 | 70.5% |
| Change of Use (Residential) | 957 | 68.0% |
| Front Extension | 162 | 60.5% |
| Annex | 28 | 46.4% |
| HMO | 432 | 28.5% |
1,959 rear extension applications in Waltham Forest 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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