Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 5,341 real decisions tell us about rear extension outcomes in East Hertfordshire.
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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 | Ware Trinity | 5 | 5 | 100.0% |
| 2 | Hertford Bengeo | 7 | 7 | 100.0% |
| 3 | Hertford Heath & Brickendon | 5 | 4 | 80.0% |
A rear extension has a 100.0% approval rate in Ware Trinity but just 80.0% in Hertford Heath & Brickendon.
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Not all applications are treated equally. Here's how rear extensions stack up against other common projects in East Hertfordshire.
| Type | Decisions | Rate |
|---|---|---|
| Conservatory | 1,052 | 82.7% |
| Rear Extension | 5,341 | 78.7% |
| Wraparound Extension | 531 | 78.2% |
| Extension (General) | 687 | 75.4% |
| Loft Conversion | 958 | 75.3% |
| Front Extension | 1,064 | 74.9% |
| Outbuilding | 1,427 | 74.4% |
| Side Extension | 3,015 | 74.1% |
| Dormer | 1,661 | 73.8% |
| Basement | 230 | 72.2% |
| Garage / Parking | 4,255 | 71.1% |
| Hip-to-Gable Conversion | 220 | 70.9% |
| Annex | 349 | 63.6% |
| Change of Use (Residential) | 1,033 | 62.7% |
| Flat Conversion | 40 | 62.5% |
| New Build | 1,276 | 62.3% |
1,139 rear extension applications in East Hertfordshire 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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