In Gwynedd, 150 homes that were recorded as chargeable second homes on 13 April 2023 could not be matched to a corresponding record on 13 April 2024.
Data am nifer yr aelwydydd a wnaeth gais i awdurdodau lleol am gymorth tai o dan Ddeddf Tai (Cymru) 2014 ac am aelwydydd digartref mewn llety dros dro ar gyfer Ebrill 2022 i Fawrth 2023.