Not all planning applications are created equal. The gap between the highest and lowest approval project type in Cornwall is 15.7% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.
See your ward's approval rate and nearby planning decisions — free and instant.
| # | Type | Decisions | Approved | Refused | Rate |
|---|---|---|---|---|---|
| 1 | Wraparound Extension | 69 | 68 | 1 | 98.6% |
| 2 | Side Extension | 643 | 630 | 13 | 98.0% |
| 3 | Conservatory | 594 | 579 | 15 | 97.5% |
| 4 | Basement | 120 | 117 | 3 | 97.5% |
| 5 | Rear Extension | 1,191 | 1,156 | 35 | 97.1% |
| 6 | Dormer | 656 | 632 | 24 | 96.3% |
| 7 | Extension (General) | 4,090 | 3,923 | 167 | 95.9% |
| 8 | Annex | 814 | 776 | 38 | 95.3% |
| 9 | Outbuilding | 1,443 | 1,363 | 80 | 94.5% |
| 10 | Garage / Parking | 3,783 | 3,554 | 229 | 93.9% |
| 11 | Front Extension | 126 | 118 | 8 | 93.7% |
| 12 | HMO | 62 | 58 | 4 | 93.5% |
| 13 | Flat Conversion | 62 | 58 | 4 | 93.5% |
| 14 | Loft Conversion | 441 | 410 | 31 | 93.0% |
| 15 | Change of Use (Residential) | 1,700 | 1,570 | 130 | 92.4% |
| 16 | New Build | 969 | 803 | 166 | 82.9% |
A wraparound extension application has a 98.6% approval rate. New Build? Just 82.9%.
Check your postcode to see what actually happens near your address.
1,744 planning applications in Cornwall 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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