Mae dosbarthiadau defnydd cynllunio newydd nawr ar waith, yn ogystal â’r gallu i awdurdodau lleol wneud diwygiadau lleol i’r system gynllunio os oes tystiolaeth i gefnogi hynny.
New planning use classes and the ability of local authorities to make local amendments to the planning system, where they have evidence, are now in force.