Mae'r mesurau'n rhan o ymrwymiad ehangach i fynd i'r afael â phroblemau ail gartrefi a thai anfforddiadwy sy'n wynebu llawer o gymunedau yng Nghymru, fel y nodir yn y Cytundeb Cydweithio rhwng Llywodraeth Cymru a Phlaid Cymru.
The measures are part of a wider commitment to address the issue of second homes and unaffordable housing facing many communities in Wales, as set out in the Co-operation Agreement between the Welsh Government and Plaid Cymru.