The council's Housing & Health committee approved the purchase of ex-local authority properties in February 2013.
To date, the council has bought almost 50 properties from homeowners through the scheme, helping to address shortages of affordable housing across the region.
The scheme has been taken forward against the background of increasing restrictions on the 'Right to Buy' scheme by Scottish Government legislation and council policy.
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The local authority added it is currently seeking more properties to purchase through the initiative, with ex-local authority houses, cottages and ground-floor properties of particular interest.
One-bedroom properties are also being considered.
Councillor Dave Doogan said: "The Buy-Back scheme is an important initiative that is helping us to provide additional social housing for people who are in accommodation need.
"Like most other areas of Scotland, there is an acute shortage of social housing in Perth and Kinross. The Buy-Back scheme, along with other initiatives such as our extensive house building programme, is making more and more affordable social housing available for local people."
For more information on the Buy-Back scheme, visit here.
(LM)
