In the 18 local authorities where demolitions were carried out, the highest numbers were in Neath Port Talbot (30), Flintshire (21), Gwynedd (14) and Cardiff (13).
Yn y 15 awdurdod arall, roedd y niferoedd yn amrywio o 26 yng Nghastell-Nedd Port Talbot i 1 yng Ngheredigion a 2 ym Mhen-y-bont ar Ogwr a Merthyr Tudful.