A high concentration of second homes or holiday lets can have a very detrimental impact on small communities, and in some areas could compromise the Welsh language being spoken at a community level.
Gall crynodiad uchel o ail gartrefi neu dai gwyliau gael effaith andwyol iawn ar gymunedau bach, ac mewn rhai ardaloedd gallai beryglu'r Gymraeg sy'n cael ei siarad ar lefel gymunedol.