The data are used by the Welsh Government and local authorities to monitor trends in social housing sales in the context of the overall level of Welsh housing stock.
Mae'r data'n cael eu defnyddio gan Lywodraeth Cymru ac awdurdodau lleol i fonitro tueddiadau mewn perthynas â gwerthiannau tai cymdeithasol yng nghyd-destun lefel gyffredinol y stoc dai yng Nghymru.