Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 2,140 real decisions tell us about rear extension outcomes in Windsor & Maidenhead.
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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 | Belmont | 5 | 5 | 100.0% |
| 2 | Pinkneys Green | 5 | 5 | 100.0% |
| 3 | Datchet Horton And Wraysbury | 11 | 10 | 90.9% |
| 4 | Sunningdale And Cheapside | 6 | 5 | 83.3% |
| 5 | Bisham And Cookham | 9 | 6 | 66.7% |
| 6 | Bray | 6 | 4 | 66.7% |
| 7 | Hurley And Walthams | 5 | 2 | 40.0% |
A rear extension has a 100.0% approval rate in Belmont but just 40.0% in Hurley And Walthams.
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Not all applications are treated equally. Here's how rear extensions stack up against other common projects in Windsor & Maidenhead.
| Type | Decisions | Rate |
|---|---|---|
| Loft Conversion | 274 | 89.1% |
| Hip-to-Gable Conversion | 135 | 88.1% |
| Basement | 97 | 87.6% |
| Conservatory | 192 | 87.0% |
| Front Extension | 598 | 84.6% |
| Rear Extension | 2,140 | 84.4% |
| Side Extension | 1,372 | 83.5% |
| Extension (General) | 211 | 83.4% |
| Garage / Parking | 1,537 | 82.3% |
| New Build | 146 | 80.8% |
| Dormer | 705 | 80.4% |
| Outbuilding | 557 | 78.6% |
| Change of Use (Residential) | 301 | 78.1% |
| Wraparound Extension | 121 | 76.0% |
| Annex | 43 | 62.8% |
333 rear extension applications in Windsor & Maidenhead 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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