Plots were originally measured in rods but here in Birmingham they are measured in square metres.
| Plot category | Approximate size |
|---|---|
| Mini (category A* or M) | Up to 84 square metres (100 square yards) |
| Small (category A) | 85 to 167 square metres (100 to 200 square yards) |
| Standard (category B or C) | 168 to 334 square metres (201 to 400 square metres) |
| Large (category D or E) | 335 to 502 square metres (401 to 600 square yards) |