Dros y 30 mlynedd ddiwethaf, mae'r Hawl i Brynu wedi arwain at leihad sylweddol yn stoc y tai cymdeithasol. Rhwng 1981 a 2014, cafodd 138,709 o dai cyngor eu gwerthu – mae hyn yn cyfateb i leihad o 45% o ran y tai cymdeithasol sydd ar gael ers i'r polisi gael ei gyflwyno am y tro cyntaf.
Over the past 30 years, the Right to Buy has resulted in a significant reduction in social housing stock. Between 1981 and 2014, 138,709 council homes were sold – this is a 45% reduction in the social housing available since the policy was first introduced.