Sønderborg Andelsboligforening – SAB is a non-profit independent and private social housing company established as a cooperative member organization of the tenants. The tenants own SAB and are organized in housing departments with individual economies. The tenants make their own decisions concerning their particular housing department. SAB has one main board, furthermore, each department has a board. SAB works with activities related to housing of its tenants. SAB has 46 departments with 3,400 apartments in the municipality of Sonderborg, Denmark. Department 22 in SAB is the Danish demo-project in ARV. Department 22 is constructed in 1973 and has 432 apartments divided into 19 housing blocks.