Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 310 real decisions tell us about rear extension outcomes in North 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 | Hitchin Bearton Ward | 6 | 6 | 100.0% |
| 2 | Hitchin Walsworth Ward | 7 | 6 | 85.7% |
| 3 | Hitchin Highbury Ward | 7 | 4 | 57.1% |
A rear extension has a 100.0% approval rate in Hitchin Bearton Ward but just 57.1% in Hitchin Highbury Ward.
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Not all applications are treated equally. Here's how rear extensions stack up against other common projects in North Hertfordshire.
| Type | Decisions | Rate |
|---|---|---|
| Rear Extension | 310 | 93.9% |
| Side Extension | 170 | 93.5% |
| Conservatory | 74 | 93.2% |
| Wraparound Extension | 27 | 92.6% |
| Outbuilding | 104 | 92.3% |
| Change of Use (Residential) | 50 | 92.0% |
| Front Extension | 86 | 90.7% |
| Loft Conversion | 61 | 90.2% |
| Hip-to-Gable Conversion | 20 | 90.0% |
| Garage / Parking | 275 | 89.8% |
| Dormer | 93 | 89.2% |
| Annex | 24 | 83.3% |
| Extension (General) | 34 | 82.4% |
| New Build | 109 | 79.8% |
19 rear extension applications in North 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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