The Welsh Local Government Association also undertook a study in 2010 that estimated that 22,000 properties in Wales had been vacant for a period of more than 6 months.
Cynhaliodd Cymdeithas Llywodraeth Leol Cymru astudiaeth yn 2010 hefyd, a amcangyfrifodd fod 22,000 eiddo yng Nghymru wedi bod yn wag am fwy na chwe mis.