The right of council tenants to buy the homes they rent at discounted rates is to be abolished in Scotland.
Deputy First Minister Nicola Sturgeon is expected to confirm the government's decision to end the scheme on a visit to a housing association in Glasgow.
Margaret Thatcher's government introduced the scheme in 1980.
The Scottish government has already scrapped it for new tenants and is expected to announce that it will be abolished altogether in 2017.
Since "right to buy" was introduced, 455,000 Scottish properties have been sold under the scheme.