Welsh Housing Conditions Survey (energy efficiency of dwellings): April 2017 to March 2018, file type: PDF, file size: 2 MB
Arolwg Cyflwr Tai Cymru (effeithlonrwydd ynni anheddau): Ebrill 2017 i Mawrth 2018, math o ffeil: PDF, maint ffeil: 2 MB