Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 3,907 real decisions tell us about rear extension outcomes in Guildford.
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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 | Stoughton South | 5 | 5 | 100.0% |
| 2 | Castle | 9 | 9 | 100.0% |
| 3 | Shalford | 5 | 5 | 100.0% |
| 4 | Clandon & Horsley | 9 | 8 | 88.9% |
| 5 | Worplesdon | 6 | 5 | 83.3% |
| 6 | Tillingbourne | 8 | 5 | 62.5% |
A rear extension has a 100.0% approval rate in Stoughton South but just 62.5% in Tillingbourne.
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Not all applications are treated equally. Here's how rear extensions stack up against other common projects in Guildford.
| Type | Decisions | Rate |
|---|---|---|
| Conservatory | 800 | 85.1% |
| Wraparound Extension | 435 | 82.1% |
| Rear Extension | 3,907 | 81.7% |
| Basement | 149 | 80.5% |
| Side Extension | 2,235 | 80.4% |
| Front Extension | 651 | 79.9% |
| Extension (General) | 759 | 79.1% |
| Outbuilding | 1,311 | 79.1% |
| Garage / Parking | 3,132 | 78.9% |
| Hip-to-Gable Conversion | 331 | 78.9% |
| Dormer | 1,513 | 76.3% |
| Loft Conversion | 782 | 75.8% |
| Annex | 121 | 73.6% |
| Flat Conversion | 44 | 72.7% |
| Change of Use (Residential) | 469 | 72.1% |
| New Build | 738 | 70.1% |
| HMO | 69 | 56.5% |
714 rear extension applications in Guildford 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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