Outbuildings are considered to be permitted development, not needing planning permission, subject to the following limits and conditions:
Caiff adeiladau allan eu hystyried yn waith datblygu a ganiateir, nad oes angen caniatâd cynllunio ar eu cyfer, cyhyd â’u bod yn cydymffurfio â’r amodau a’r terfynau a ganlyn: