We have reduced the minimum block size from 0.1ha (equivalent to 100m x 10m) to 0.01ha (equivalent to 10m x 10m).
Arwynebedd lleiaf o 1ha (Cewch rannu'r arwynebedd lleiaf o 1ha rhwng un neu ragor o barseli tir, cyn belled â bod pob parsel o leiaf 0.1ha).