Development is excluded within article 1(5) land, World Heritage Sites, and listed buildings due to the need for more detailed consideration of the planning impacts upon their special character.
Ni chaniateir datblygu ar dir erthygl 1(5) nac ar Safle Treftadaeth y Byd, na datblygu adeiladau rhestredig, am fod angen ystyried yr effeithiau cynllunio ar eu cymeriad arbennig yn fwy manwl.