Rear extensions are the bread and butter of UK planning — and one of the most common reasons homeowners face a refusal. Here's what 10,946 real decisions tell us about rear extension outcomes in Bromley.
See your ward's approval rate and nearby planning decisions — free and instant.
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 | BROCOH | 6 | 6 | 100.0% |
| 2 | PETSWK | 5 | 5 | 100.0% |
| 3 | WESTWK | 5 | 5 | 100.0% |
| 4 | CLOCK | 7 | 6 | 85.7% |
| 5 | CHIS | 5 | 4 | 80.0% |
A rear extension has a 100.0% approval rate in BROCOH but just 80.0% in CHIS.
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 Bromley.
| Type | Decisions | Rate |
|---|---|---|
| Conservatory | 1,305 | 84.3% |
| Rear Extension | 10,946 | 82.2% |
| Hip-to-Gable Conversion | 1,648 | 80.6% |
| Basement | 734 | 80.4% |
| Loft Conversion | 4,048 | 79.6% |
| Garage / Parking | 8,143 | 79.1% |
| Wraparound Extension | 1,270 | 79.1% |
| Dormer | 5,444 | 79.0% |
| Extension (General) | 1,451 | 78.4% |
| Side Extension | 5,503 | 78.1% |
| Front Extension | 1,575 | 77.5% |
| Outbuilding | 1,698 | 77.0% |
| Change of Use (Residential) | 1,732 | 74.4% |
| Flat Conversion | 255 | 74.1% |
| New Build | 1,744 | 73.0% |
| Annex | 224 | 62.1% |
| HMO | 174 | 58.0% |
1,945 rear extension applications in Bromley 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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