At the minute, the Right To Acquire rule applies to housing association houses, rather than the Right To Buy. The Right To Acquire law means that if someone wants to purchase the HA home they have been renting, they'll be offered a discount which is normally around £10,000. Not many people do this because for the sake of £10,000 you're probably just going to go to a third party instead and buy your house because there tends to be more variety with the houses rather than a bog standard HA house. Extending the right to buy means that the discount will be a lot larger, with the maximum discount being around £80,000, meaning people who had previously been discouraged by the small discount will now want to buy their HA house.