The welcome pack concept was created around 20 years ago by the mentrau iaith in north-west Wales in co-operation with estate agents and local authorities.
Crëwyd y cysyniad o Becyn Croeso tua 20 mlynedd yn ôl gan fentrau iaith y gogledd-orllewin mewn cydweithrediad ag asiantaethau eiddo ac awdurdodau lleol.