The term originates from the time when peasants had to hand over one tenth of their harvest or a 'tithe', hence the name 'tithe barn'. This building is being renovated in the old wood and clay style. The wooden framework is built by a carpenter, then the young people mix the plaster and fill in the empty spaces with wickerwork and layers of clay. Work on the barn has continued for 10 years, and it now houses an adult education centre, a youth centre, a museum, and low-cost apartments. Between 12 and 16 participants work on the project each year.
Participants sometimes make contact with future employers.
In addition to working on the tithe barn, the young people also fulfil practical training requirements with 'real' construction firms. The programme also stresses ecological issues. The young people learn that clay can be taken out of the earth and returned to it without damage. Furthermore, the ancient craft technique of building with clay is becoming more economically viable. An increasing number of wood and clay houses, of which there are many in Hessen, are being restored in the traditional way.